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0
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1 /* Display generation from window structure and buffer text.
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2 Copyright (C) 1994, 1995, 1996 Board of Trustees, University of Illinois.
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3 Copyright (C) 1995 Free Software Foundation, Inc.
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4 Copyright (C) 1995, 1996 Ben Wing.
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5 Copyright (C) 1995 Sun Microsystems, Inc.
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6 Copyright (C) 1996 Chuck Thompson.
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7
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8 This file is part of XEmacs.
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9
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10 XEmacs is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by the
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12 Free Software Foundation; either version 2, or (at your option) any
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13 later version.
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14
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15 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with XEmacs; see the file COPYING. If not, write to
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22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA. */
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24
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25 /* Synched up with: Not in FSF. */
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26
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27 /* Author: Chuck Thompson */
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28
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29 /* Fixed up by Ben Wing for Mule */
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30
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31 /* This file has been Mule-ized. */
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32
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33 /*****************************************************************************
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34 The Golden Rules of Redisplay
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35
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36 First: It Is Better To Be Correct Than Fast
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37 Second: Thou Shalt Not Run Elisp From Within Redisplay
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38 Third: It Is Better To Be Fast Than Not To Be
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39 ****************************************************************************/
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40
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41 #include <config.h>
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42 #include "lisp.h"
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43
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44 #include "buffer.h"
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45 #include "commands.h"
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46 #include "debug.h"
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47 #include "device.h"
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48 #include "extents.h"
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49 #include "faces.h"
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50 #include "frame.h"
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51 #include "glyphs.h"
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52 #include "insdel.h"
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53 #include "menubar.h"
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54 #include "objects.h"
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55 #include "process.h"
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56 #include "redisplay.h"
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57 #include "toolbar.h"
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58 #include "window.h"
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59
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70
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60 #ifdef MULE
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61 #include "mule-coding.h"
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62 #endif
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16
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63
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149
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64 #ifdef HAVE_TTY
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65 #include "console-tty.h"
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66 #endif
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67
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0
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68 /* Note: We have to be careful throughout this code to properly handle
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69 and differentiate between Bufbytes and Emchars.
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70
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71 Since strings are generally composed of Bufbytes, I've taken the tack
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72 that any contiguous set of Bufbytes is called a "string", while
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73 any contiguous set of Emchars is called an "array". */
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74
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75 /* Return value to indicate a failure by an add_*_rune routine to add
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76 a rune, but no propagation information needs to be returned. */
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77 #define ADD_FAILED (prop_block_dynarr *) 1
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78
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79 #define BEGIN_GLYPHS 0
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80 #define END_GLYPHS 1
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81 #define LEFT_GLYPHS 2
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82 #define RIGHT_GLYPHS 3
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83
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84 /* Set the vertical clip to 0 if we are currently updating the line
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85 start cache. Otherwise for buffers of line height 1 it may fail to
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86 be able to work properly because regenerate_window will not layout
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87 a single line. */
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88 #define VERTICAL_CLIP(w, display) \
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89 (updating_line_start_cache \
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90 ? 0 \
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91 : ((WINDOW_TTY_P (w) | (!display && scroll_on_clipped_lines)) \
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92 ? INT_MAX \
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93 : vertical_clip))
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94
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95 /* The following structures are completely private to redisplay.c so
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96 we put them here instead of in a header file, for modularity. */
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97
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98 /* NOTE: Bytinds not Bufpos's in this structure. */
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99
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100 typedef struct position_redisplay_data_type
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101 {
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102 /* This information is normally filled in by the create_*_block
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103 routines and is used by the add_*_rune routines. */
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104 Lisp_Object window;
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105 struct device *d;
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106 struct display_block *db;
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107 struct display_line *dl;
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108 Emchar ch; /* Character that is to be added. This is
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109 used to communicate this information to
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110 add_emchar_rune(). */
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111 Lisp_Object last_charset; /* The charset of the previous character.
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112 Used to optimize some lookups -- we
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113 only have to do some things when
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114 the charset changes. */
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94
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115 face_index last_findex; /* The face index of the previous character.
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116 Needed to ensure the validity of the
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117 last_charset optimization. */
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118
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0
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119 int last_char_width; /* The width of the previous character. */
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120 int font_is_bogus; /* If true, it means we couldn't instantiate
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121 the font for this charset, so we substitute
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122 ~'s from the ASCII charset. */
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123 Bytind bi_bufpos;
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124 Bytind bi_endpos;
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125 int pixpos;
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126 int max_pixpos;
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127 int blank_width; /* Width of the blank that is to be added.
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128 This is used to communicate this information
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129 to add_blank_rune().
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130
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131 This is also used rather cheesily to
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132 communicate the width of the eol-cursor-size
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133 blank that exists at the end of the line.
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134 add_emchar_rune() is called cheesily with
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135 the non-printing char '\n', which is stuck
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136 in the output routines with its width being
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137 BLANK_WIDTH. */
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138 Bytind bi_cursor_bufpos;/* This stores the buffer position of the cursor. */
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139 unsigned int cursor_type :3;
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140 int cursor_x; /* rune block cursor is at */
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141 int start_col; /* Number of character columns (each column has
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142 a width of the default char width) that still
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143 need to be skipped. This is used for horizontal
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144 scrolling, where a certain number of columns
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145 (those off the left side of the screen) need
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146 to be skipped before anything is displayed. */
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147 Bytind bi_start_col_enabled;
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148
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149 /* Information about the face the text should be displayed in and
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150 any begin-glyphs and end-glyphs. */
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151 struct extent_fragment *ef;
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152 face_index findex;
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153
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154 /* The height of a pixmap may either be predetermined if the user
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2
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155 has set a baseline value, or it may be dependent on whatever the
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156 line ascent and descent values end up being, based just on font
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157 information. In the first case we can immediately update the
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158 values, thus their inclusion here. In the last case we cannot
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159 determine the actual contribution to the line height until we
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160 have finished laying out all text on the line. Thus we propagate
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161 the max height of such pixmaps and do a final calculation after
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162 all text has been added to the line. */
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163 int new_ascent;
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164 int new_descent;
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165 int max_pixmap_height;
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166
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167 Lisp_Object result_str; /* String where we put the result of
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168 generating a formatted string in the modeline. */
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169 int is_modeline; /* Non-zero if we're generating the modeline. */
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170 Charcount modeline_charpos; /* Number of chars used in result_str so far;
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171 corresponds to bytepos. */
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172 Bytecount bytepos; /* Number of bytes used in result_str so far.
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173 We don't actually copy the bytes into result_str
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174 until the end because we don't know how big the
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175 string is going to be until then. */
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176 } pos_data;
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177
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178 enum prop_type
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179 {
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180 PROP_STRING,
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181 PROP_CHAR,
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182 PROP_MINIBUF_PROMPT,
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183 PROP_BLANK
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184 };
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185
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186 /* Data that should be propagated to the next line. Either a single
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187 Emchar or a string of Bufbyte's.
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188
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189 The actual data that is propagated ends up as a Dynarr of these
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190 blocks.
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191
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192 #### It's unclean that both Emchars and Bufbytes are here.
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193 */
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194
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195 struct prop_block
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196 {
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197 enum prop_type type;
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198
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199 union data
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200 {
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201 struct
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202 {
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203 Bufbyte *str;
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204 Bytecount len; /* length of the string. */
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205 } p_string;
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206
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207 struct
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208 {
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209 Emchar ch;
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210 Bytind bi_cursor_bufpos; /* NOTE: is in Bytinds */
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211 unsigned int cursor_type :3;
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212 } p_char;
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213
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214 struct
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215 {
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216 int width;
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217 face_index findex;
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218 } p_blank;
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219 } data;
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220 };
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221
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222 typedef struct prop_block_dynarr_type
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223 {
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224 Dynarr_declare (struct prop_block);
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225 } prop_block_dynarr;
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226
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227
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228 /*
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229 * Prototypes for all functions defined in redisplay.c.
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230 */
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231 struct display_block *get_display_block_from_line (struct display_line *dl,
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232 enum display_type type);
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233 layout_bounds calculate_display_line_boundaries (struct window *w,
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234 int modeline);
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235 static Bufpos generate_display_line (struct window *w, struct display_line *dl,
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236 int bounds, Bufpos start_pos,
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237 int start_col, prop_block_dynarr **prop,
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238 int type);
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239 static void generate_modeline (struct window *w, struct display_line *dl,
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240 int type);
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241 static int ensure_modeline_generated (struct window *w, int type);
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242 static void generate_formatted_string_db (Lisp_Object format_str,
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243 Lisp_Object result_str,
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244 struct window *w,
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245 struct display_line *dl,
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246 struct display_block *db,
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247 face_index findex, int min_pixpos,
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248 int max_pixpos, int type);
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249 static Charcount generate_fstring_runes (struct window *w, pos_data *data,
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250 Charcount pos, Charcount min_pos,
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251 Charcount max_pos, Lisp_Object elt,
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252 int depth, int max_pixsize,
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253 face_index findex, int type);
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254 static prop_block_dynarr *add_emchar_rune (pos_data *data);
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255 static prop_block_dynarr *add_bufbyte_string_runes (pos_data *data,
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256 Bufbyte *c_string,
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257 Bytecount c_length,
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258 int no_prop);
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259 static prop_block_dynarr *add_blank_rune (pos_data *data, struct window *w,
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260 int char_tab_width);
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261 static prop_block_dynarr *add_octal_runes (pos_data *data);
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262 static prop_block_dynarr *add_control_char_runes (pos_data *data,
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263 struct buffer *b);
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264 static prop_block_dynarr *add_disp_table_entry_runes (pos_data *data,
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265 Lisp_Object entry);
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266 static prop_block_dynarr *add_propagation_runes (prop_block_dynarr **prop,
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267 pos_data *data);
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268 static prop_block_dynarr *add_glyph_rune (pos_data *data,
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269 struct glyph_block *gb,
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270 int pos_type, int allow_cursor,
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271 struct glyph_cachel *cachel);
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272 static prop_block_dynarr *add_glyph_runes (pos_data *data,
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273 int pos_type);
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274 /* NOTE: Bytinds not Bufpos's here. */
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275 static Bytind create_text_block (struct window *w, struct display_line *dl,
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276 Bytind bi_start_pos, int start_col,
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277 prop_block_dynarr **prop, int type);
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278 static int create_overlay_glyph_block (struct window *w,
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279 struct display_line *dl);
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280 static void create_left_glyph_block (struct window *w,
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281 struct display_line *dl,
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282 int overlay_width);
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283 static void create_right_glyph_block (struct window *w,
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284 struct display_line *dl);
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285 static void regenerate_window (struct window *w, Bufpos start_pos,
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286 Bufpos point, int type);
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70
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287 static void regenerate_window_point_center (struct window *w, Bufpos point,
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288 int type);
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0
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289 int window_half_pixpos (struct window *w);
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290 int line_at_center (struct window *w, int type, Bufpos start, Bufpos point);
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291 Bufpos point_at_center (struct window *w, int type, Bufpos start,
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292 Bufpos point);
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293 static void redisplay_window (Lisp_Object window, int skip_selected);
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294 static void redisplay_windows (Lisp_Object window, int skip_selected);
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295 static int redisplay_frame (struct frame *f, int preemption_check);
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296 void redisplay (void);
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297 static void decode_mode_spec (struct window *w, Emchar spec, int type);
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298 static void free_display_line (struct display_line *dl);
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299 void free_display_structs (struct window_mirror *mir);
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300 static int point_visible (struct window *w, Bufpos point, int type);
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301 static void update_line_start_cache (struct window *w, Bufpos from, Bufpos to,
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302 Bufpos point, int no_regen);
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303 static Bufpos line_start_cache_start (struct window *w);
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304 static Bufpos line_start_cache_end (struct window *w);
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305
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306 /* This used to be 10 but 30 seems to give much better performance. */
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307 #define INIT_MAX_PREEMPTS 30
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308 static int max_preempts;
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309
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310 #define REDISPLAY_PREEMPTION_CHECK \
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311 do { \
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312 preempted = 0; \
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313 if (!disable_preemption && \
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314 ((preemption_count < max_preempts) || !NILP (Vexecuting_macro))) \
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315 if (!INTERACTIVE || detect_input_pending ()) { \
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316 preempted = 1; \
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317 } \
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318 } while (0)
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319
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320 /*
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321 * Redisplay global variables.
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322 */
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323
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324 /* We need a third set of display structures for the cursor motion
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325 routines. We used to just give each window a third set. However,
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326 we always fully regenerate the structures when needed so there
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327 isn't any reason we need more than a single set. */
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328 display_line_dynarr *cmotion_display_lines;
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329
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330 /* Used by generate_formatted_string. Global because they get used so
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331 much that the dynamic allocation time adds up. */
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332 emchar_dynarr *formatted_string_emchar_dynarr;
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333 struct display_line formatted_string_display_line;
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334 /* We store the extents that we need to generate in a Dynarr and then
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335 frob them all on at the end of generating the string. We do it
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336 this way rather than adding them as we generate the string because
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337 we don't store the text into the resulting string until we're done
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338 (to avoid having to resize the string multiple times), and we don't
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339 want to go around adding extents to a string when the extents might
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340 stretch off the end of the string. */
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341 extent_dynarr *formatted_string_extent_dynarr;
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342 bytecount_dynarr *formatted_string_extent_start_dynarr;
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343 bytecount_dynarr *formatted_string_extent_end_dynarr;
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344
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345
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346 /* #### probably temporary */
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347 int cache_adjustment;
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348
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349 /* This holds a string representing the text corresponding to a single
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350 modeline % spec. */
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351 static bufbyte_dynarr *mode_spec_bufbyte_string;
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352
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353 int in_display; /* 1 if in redisplay. */
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354
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355 int disable_preemption; /* Used for debugging redisplay and for
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356 force-redisplay. */
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357
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358 /* We only allow max_preempts preemptions before we force a redisplay. */
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359 static int preemption_count;
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360
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361 /* Minimum pixel height of clipped bottom display line. */
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362 int vertical_clip;
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363
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364 /* Minimum visible pixel width of clipped glyphs at right margin. */
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365 int horizontal_clip;
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366
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367 /* Set if currently inside update_line_start_cache. */
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368 int updating_line_start_cache;
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369
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370 /* Nonzero means reading single-character input with prompt
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371 so put cursor on minibuffer after the prompt. */
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372 int cursor_in_echo_area;
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373 Lisp_Object Qcursor_in_echo_area;
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374
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375 /* Nonzero means truncate lines in all windows less wide than the frame */
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376 int truncate_partial_width_windows;
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377
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378 /* non-nil if a buffer has changed since the last time redisplay completed */
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379 int buffers_changed;
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380 int buffers_changed_set;
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381
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382 /* non-nil if hscroll has changed somewhere or a buffer has been
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383 narrowed or widened */
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384 int clip_changed;
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385 int clip_changed_set;
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386
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387 /* non-nil if any extent has changed since the last time redisplay completed */
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388 int extents_changed;
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389 int extents_changed_set;
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390
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391 /* non-nil if any face has changed since the last time redisplay completed */
|
|
|
392 int faces_changed;
|
|
|
393
|
|
|
394 /* Nonzero means some frames have been marked as garbaged */
|
|
|
395 int frame_changed;
|
|
|
396
|
|
|
397 /* This variable is 1 if the icon has to be updated.
|
|
|
398 It is set to 1 when `frame-icon-glyph' changes. */
|
|
|
399 int icon_changed;
|
|
|
400 int icon_changed_set;
|
|
|
401
|
|
|
402 /* This variable is 1 if the menubar widget has to be updated.
|
|
|
403 It is set to 1 by set-menubar-dirty-flag and cleared when the widget
|
|
|
404 has been indapted. */
|
|
|
405 /* indapted???? */
|
|
|
406 int menubar_changed;
|
|
|
407 int menubar_changed_set;
|
|
|
408
|
|
|
409 /* true iff we should redraw the modelines on the next redisplay */
|
|
|
410 int modeline_changed;
|
|
|
411 int modeline_changed_set;
|
|
|
412
|
|
|
413 /* non-nil if point has changed in some buffer since the last time
|
|
|
414 redisplay completed */
|
|
|
415 int point_changed;
|
|
|
416 int point_changed_set;
|
|
|
417
|
|
|
418 /* non-nil if some frame has changed its size */
|
|
|
419 int size_changed;
|
|
|
420
|
|
|
421 /* non-nil if some device has signaled that it wants to change size */
|
|
|
422 int asynch_device_change_pending;
|
|
|
423
|
|
|
424 /* non-nil if any toolbar has changed */
|
|
|
425 int toolbar_changed;
|
|
|
426 int toolbar_changed_set;
|
|
|
427
|
|
|
428 /* non-nil if any window has changed since the last time redisplay completed */
|
|
|
429 int windows_changed;
|
|
|
430
|
|
2
|
431 /* non-nil if any frame's window structure has changed since the last
|
|
0
|
432 time redisplay completed */
|
|
|
433 int windows_structure_changed;
|
|
|
434
|
|
|
435 /* If non-nil, use vertical bar cursor. */
|
|
|
436 Lisp_Object Vbar_cursor;
|
|
|
437 Lisp_Object Qbar_cursor;
|
|
|
438
|
|
|
439
|
|
|
440 int visible_bell; /* If true and the terminal will support it
|
|
|
441 then the frame will flash instead of
|
|
|
442 beeping when an error occurs */
|
|
|
443
|
|
|
444 /* Nonzero means no need to redraw the entire frame on resuming
|
|
|
445 a suspended Emacs. This is useful on terminals with multiple pages,
|
|
|
446 where one page is used for Emacs and another for all else. */
|
|
|
447 int no_redraw_on_reenter;
|
|
|
448
|
|
|
449 Lisp_Object Vwindow_system; /* nil or a symbol naming the window system
|
|
|
450 under which emacs is running
|
|
|
451 ('x is the only current possibility) */
|
|
|
452 Lisp_Object Vinitial_window_system;
|
|
|
453
|
|
|
454 Lisp_Object Vglobal_mode_string;
|
|
|
455
|
|
|
456 /* The number of lines to try scrolling a
|
|
|
457 window by when point leaves the window; if
|
|
|
458 it is <=0 then point is centered in the window */
|
|
|
459 int scroll_step;
|
|
|
460
|
|
|
461 /* Marker for where to display an arrow on top of the buffer text. */
|
|
|
462 Lisp_Object Voverlay_arrow_position;
|
|
|
463 /* String to display for the arrow. */
|
|
|
464 Lisp_Object Voverlay_arrow_string;
|
|
|
465
|
|
|
466 Lisp_Object Vwindow_size_change_functions;
|
|
|
467 Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions;
|
|
|
468 Lisp_Object Qredisplay_end_trigger_functions, Vredisplay_end_trigger_functions;
|
|
|
469
|
|
|
470 #define INHIBIT_REDISPLAY_HOOKS /* #### Until we've thought about
|
|
|
471 this more. */
|
|
|
472 #ifndef INHIBIT_REDISPLAY_HOOKS
|
|
|
473 /* #### Chuck says: I think this needs more thought.
|
|
|
474 Think about this for 19.14. */
|
|
|
475 Lisp_Object Vpre_redisplay_hook, Vpost_redisplay_hook;
|
|
|
476 Lisp_Object Qpre_redisplay_hook, Qpost_redisplay_hook;
|
|
|
477 #endif
|
|
|
478
|
|
|
479 int last_display_warning_tick, display_warning_tick;
|
|
|
480 Lisp_Object Qdisplay_warning_buffer;
|
|
|
481 int inhibit_warning_display;
|
|
|
482
|
|
|
483 Lisp_Object Vleft_margin_width, Vright_margin_width;
|
|
|
484 Lisp_Object Vminimum_line_ascent, Vminimum_line_descent;
|
|
|
485 Lisp_Object Vuse_left_overflow, Vuse_right_overflow;
|
|
|
486 Lisp_Object Vtext_cursor_visible_p;
|
|
|
487
|
|
72
|
488 int column_number_start_at_one;
|
|
0
|
489
|
|
|
490 /***************************************************************************/
|
|
|
491 /* */
|
|
|
492 /* low-level interfaces onto device routines */
|
|
|
493 /* */
|
|
|
494 /***************************************************************************/
|
|
|
495
|
|
|
496 static int
|
|
|
497 redisplay_text_width_emchar_string (struct window *w, int findex,
|
|
|
498 Emchar *str, Charcount len)
|
|
|
499 {
|
|
|
500 unsigned char charsets[NUM_LEADING_BYTES];
|
|
|
501 Lisp_Object window = Qnil;
|
|
|
502
|
|
|
503 find_charsets_in_emchar_string (charsets, str, len);
|
|
|
504 XSETWINDOW (window, w);
|
|
|
505 ensure_face_cachel_complete (WINDOW_FACE_CACHEL (w, findex), window,
|
|
|
506 charsets);
|
|
|
507 return DEVMETH (XDEVICE (FRAME_DEVICE (XFRAME (WINDOW_FRAME (w)))),
|
|
|
508 text_width, (WINDOW_FACE_CACHEL (w, findex),
|
|
|
509 str, len));
|
|
|
510 }
|
|
|
511
|
|
|
512 static emchar_dynarr *rtw_emchar_dynarr;
|
|
|
513
|
|
|
514 int
|
|
|
515 redisplay_text_width_string (struct window *w, int findex,
|
|
|
516 Bufbyte *nonreloc, Lisp_Object reloc,
|
|
|
517 Bytecount offset, Bytecount len)
|
|
|
518 {
|
|
|
519 if (!rtw_emchar_dynarr)
|
|
|
520 rtw_emchar_dynarr = Dynarr_new (Emchar);
|
|
|
521 Dynarr_reset (rtw_emchar_dynarr);
|
|
|
522
|
|
|
523 fixup_internal_substring (nonreloc, reloc, offset, &len);
|
|
|
524 if (STRINGP (reloc))
|
|
16
|
525 nonreloc = XSTRING_DATA (reloc);
|
|
0
|
526 convert_bufbyte_string_into_emchar_dynarr (nonreloc, len, rtw_emchar_dynarr);
|
|
|
527 return redisplay_text_width_emchar_string
|
|
|
528 (w, findex, Dynarr_atp (rtw_emchar_dynarr, 0),
|
|
|
529 Dynarr_length (rtw_emchar_dynarr));
|
|
|
530 }
|
|
|
531
|
|
|
532 int
|
|
|
533 redisplay_frame_text_width_string (struct frame *f, Lisp_Object face,
|
|
|
534 Bufbyte *nonreloc, Lisp_Object reloc,
|
|
|
535 Bytecount offset, Bytecount len)
|
|
|
536 {
|
|
|
537 unsigned char charsets[NUM_LEADING_BYTES];
|
|
|
538 Lisp_Object frame = Qnil;
|
|
|
539 struct face_cachel cachel;
|
|
|
540
|
|
|
541 if (!rtw_emchar_dynarr)
|
|
|
542 rtw_emchar_dynarr = Dynarr_new (Emchar);
|
|
|
543 Dynarr_reset (rtw_emchar_dynarr);
|
|
|
544
|
|
|
545 fixup_internal_substring (nonreloc, reloc, offset, &len);
|
|
|
546 if (STRINGP (reloc))
|
|
16
|
547 nonreloc = XSTRING_DATA (reloc);
|
|
0
|
548 convert_bufbyte_string_into_emchar_dynarr (nonreloc, len, rtw_emchar_dynarr);
|
|
|
549 find_charsets_in_bufbyte_string (charsets, nonreloc, len);
|
|
|
550 reset_face_cachel (&cachel);
|
|
|
551 cachel.face = face;
|
|
|
552 XSETFRAME (frame, f);
|
|
|
553 ensure_face_cachel_complete (&cachel, frame, charsets);
|
|
|
554 return DEVMETH (XDEVICE (FRAME_DEVICE (f)),
|
|
|
555 text_width, (&cachel, Dynarr_atp (rtw_emchar_dynarr, 0),
|
|
|
556 Dynarr_length (rtw_emchar_dynarr)));
|
|
|
557 }
|
|
|
558
|
|
|
559 /* Return the display block from DL of the given TYPE. A display line
|
|
|
560 can have only one display block of each possible type. If DL does
|
|
|
561 not have a block of type TYPE, one will be created and added to DL. */
|
|
|
562
|
|
|
563 struct display_block *
|
|
|
564 get_display_block_from_line (struct display_line *dl, enum display_type type)
|
|
|
565 {
|
|
|
566 int elt;
|
|
|
567 struct display_block db;
|
|
|
568
|
|
|
569 /* Check if this display line already has a block of the desired type and
|
|
|
570 if so, return it. */
|
|
|
571 if (dl->display_blocks)
|
|
|
572 {
|
|
|
573 for (elt = 0; elt < Dynarr_length (dl->display_blocks); elt++)
|
|
|
574 {
|
|
|
575 if (Dynarr_at (dl->display_blocks, elt).type == type)
|
|
|
576 return (Dynarr_atp (dl->display_blocks, elt));
|
|
|
577 }
|
|
|
578
|
|
|
579 /* There isn't an active block of the desired type, but there
|
|
|
580 might still be allocated blocks we need to reuse. */
|
|
|
581 if (elt < Dynarr_largest (dl->display_blocks))
|
|
|
582 {
|
|
|
583 struct display_block *dbp = Dynarr_atp (dl->display_blocks, elt);
|
|
|
584
|
|
|
585 /* 'add' the block to the list */
|
|
|
586 Dynarr_increment (dl->display_blocks);
|
|
|
587
|
|
|
588 /* initialize and return */
|
|
|
589 dbp->type = type;
|
|
|
590 return dbp;
|
|
|
591 }
|
|
|
592 }
|
|
|
593 else
|
|
|
594 {
|
|
|
595 /* This line doesn't have any display blocks, so initialize the display
|
|
|
596 bock array. */
|
|
|
597 dl->display_blocks = Dynarr_new (struct display_block);
|
|
|
598 }
|
|
|
599
|
|
|
600 /* The line doesn't have a block of the desired type so go ahead and create
|
|
|
601 one and add it to the line. */
|
|
|
602 memset (&db, 0, sizeof (struct display_block));
|
|
|
603 db.type = type;
|
|
|
604 db.runes = Dynarr_new (struct rune);
|
|
|
605 Dynarr_add (dl->display_blocks, db);
|
|
|
606
|
|
|
607 /* Return the newly added display block. */
|
|
|
608 elt = Dynarr_length (dl->display_blocks) - 1;
|
|
|
609
|
|
|
610 return Dynarr_atp (dl->display_blocks, elt);
|
|
|
611 }
|
|
|
612
|
|
|
613 static int
|
|
|
614 tab_char_width (struct window *w)
|
|
|
615 {
|
|
|
616 struct buffer *b = XBUFFER (w->buffer);
|
|
|
617 int char_tab_width = XINT (b->tab_width);
|
|
|
618
|
|
|
619 if (char_tab_width <= 0 || char_tab_width > 1000) char_tab_width = 8;
|
|
|
620
|
|
|
621 return char_tab_width;
|
|
|
622 }
|
|
|
623
|
|
|
624 static int
|
|
|
625 space_width (struct window *w)
|
|
|
626 {
|
|
|
627 /* While tabs are traditional composed of spaces, for variable-width
|
|
|
628 fonts the space character tends to give too narrow a value. So
|
|
|
629 we use 'n' instead. Except that we don't. We use the default
|
|
|
630 character width for the default face. If this is actually
|
|
|
631 defined by the font then it is probably the best thing to
|
|
|
632 actually use. If it isn't, we have assumed it is 'n' and have
|
|
|
633 already calculated its width. Thus we can avoid a call to
|
|
|
634 XTextWidth on X frames by just querying the default width. */
|
|
|
635 return XFONT_INSTANCE
|
|
|
636 (WINDOW_FACE_CACHEL_FONT (w, DEFAULT_INDEX, Vcharset_ascii))->width;
|
|
|
637 }
|
|
|
638
|
|
|
639 static int
|
|
|
640 tab_pix_width (struct window *w)
|
|
|
641 {
|
|
|
642 return (space_width (w) * tab_char_width (w));
|
|
|
643 }
|
|
|
644
|
|
|
645 /* Given a pixel position in a window, return the pixel location of
|
|
|
646 the next tabstop. Tabs are calculated from the left window edge in
|
|
|
647 terms of spaces displayed in the default face. Formerly the space
|
|
|
648 width was determined using the currently active face. That method
|
|
|
649 leads to tabstops which do not line up. */
|
|
|
650
|
|
|
651 static int
|
|
|
652 next_tab_position (struct window *w, int start_pixpos, int left_pixpos)
|
|
|
653 {
|
|
|
654 int n_pos = left_pixpos;
|
|
|
655 int pix_tab_width = tab_pix_width (w);
|
|
|
656
|
|
|
657 /* Adjust n_pos for any hscrolling which has happened. */
|
|
|
658 if (w->hscroll > 1)
|
|
|
659 n_pos -= space_width (w) * (w->hscroll - 1);
|
|
|
660
|
|
|
661 while (n_pos <= start_pixpos)
|
|
|
662 n_pos += pix_tab_width;
|
|
|
663
|
|
|
664 return n_pos;
|
|
|
665 }
|
|
|
666
|
|
|
667 /* For the given window, calculate the outside and margin boundaries for a
|
|
|
668 display line. The whitespace boundaries must be calculated by the text
|
|
|
669 layout routines. */
|
|
|
670
|
|
|
671 layout_bounds
|
|
|
672 calculate_display_line_boundaries (struct window *w, int modeline)
|
|
|
673 {
|
|
|
674 layout_bounds bounds;
|
|
|
675
|
|
|
676 /* Set the outermost boundaries which are the boundaries of the
|
|
|
677 window itself minus the gutters (and minus the scrollbars if this
|
|
|
678 is for the modeline). */
|
|
|
679 if (!modeline)
|
|
|
680 {
|
|
|
681 bounds.left_out = WINDOW_TEXT_LEFT (w);
|
|
|
682 bounds.right_out = WINDOW_TEXT_RIGHT (w);
|
|
|
683 }
|
|
|
684 else
|
|
|
685 {
|
|
|
686 bounds.left_out = WINDOW_MODELINE_LEFT (w);
|
|
|
687 bounds.right_out = WINDOW_MODELINE_RIGHT (w);
|
|
|
688 }
|
|
|
689
|
|
|
690 /* The inner boundaries mark where the glyph margins are located. */
|
|
|
691 bounds.left_in = bounds.left_out + window_left_margin_width (w);
|
|
|
692 bounds.right_in = bounds.right_out - window_right_margin_width (w);
|
|
|
693
|
|
|
694 /* We cannot fully calculate the whitespace boundaries as they
|
|
|
695 depend on the contents of the line being displayed. */
|
|
|
696 bounds.left_white = bounds.left_in;
|
|
|
697 bounds.right_white = bounds.right_in;
|
|
|
698
|
|
|
699 return bounds;
|
|
|
700 }
|
|
|
701
|
|
|
702 /* Given a display line and a starting position, ensure that the
|
|
|
703 contents of the display line accurately represent the visual
|
|
|
704 representation of the buffer contents starting from the given
|
|
|
705 position when displayed in the given window. The display line ends
|
|
|
706 when the contents of the line reach the right boundary of the given
|
|
|
707 window. */
|
|
|
708
|
|
|
709 static Bufpos
|
|
|
710 generate_display_line (struct window *w, struct display_line *dl, int bounds,
|
|
|
711 Bufpos start_pos, int start_col,
|
|
|
712 prop_block_dynarr **prop, int type)
|
|
|
713 {
|
|
|
714 Bufpos ret_bufpos;
|
|
|
715 int overlay_width;
|
|
|
716 struct buffer *b = XBUFFER (WINDOW_BUFFER (w));
|
|
|
717
|
|
|
718 /* If our caller hasn't already set the boundaries, then do so now. */
|
|
|
719 if (!bounds)
|
|
|
720 dl->bounds = calculate_display_line_boundaries (w, 0);
|
|
|
721
|
|
|
722 /* Reset what this line is using. */
|
|
|
723 if (dl->display_blocks)
|
|
|
724 Dynarr_reset (dl->display_blocks);
|
|
|
725 if (dl->left_glyphs)
|
|
|
726 {
|
|
|
727 Dynarr_free (dl->left_glyphs);
|
|
|
728 dl->left_glyphs = 0;
|
|
|
729 }
|
|
|
730 if (dl->right_glyphs)
|
|
|
731 {
|
|
|
732 Dynarr_free (dl->right_glyphs);
|
|
|
733 dl->right_glyphs = 0;
|
|
|
734 }
|
|
|
735
|
|
|
736 /* We aren't generating a modeline at the moment. */
|
|
|
737 dl->modeline = 0;
|
|
|
738
|
|
|
739 /* Create a display block for the text region of the line. */
|
|
|
740 {
|
|
|
741 /* #### urk urk urk!!! Chuck fix this shit! */
|
|
|
742 Bytind hacked_up_bytind =
|
|
|
743 create_text_block (w, dl, bufpos_to_bytind (b, start_pos),
|
|
|
744 start_col, prop, type);
|
|
|
745 if (hacked_up_bytind > BI_BUF_ZV (b))
|
|
|
746 ret_bufpos = BUF_ZV (b) + 1;
|
|
|
747 else
|
|
|
748 ret_bufpos = bytind_to_bufpos (b, hacked_up_bytind);
|
|
|
749 }
|
|
|
750 dl->bufpos = start_pos;
|
|
|
751 if (dl->end_bufpos < dl->bufpos)
|
|
|
752 dl->end_bufpos = dl->bufpos;
|
|
|
753
|
|
|
754 if (MARKERP (Voverlay_arrow_position)
|
|
|
755 && EQ (w->buffer, Fmarker_buffer (Voverlay_arrow_position))
|
|
|
756 && start_pos == marker_position (Voverlay_arrow_position)
|
|
|
757 && (STRINGP (Voverlay_arrow_string)
|
|
|
758 || GLYPHP (Voverlay_arrow_string)))
|
|
|
759 {
|
|
|
760 overlay_width = create_overlay_glyph_block (w, dl);
|
|
|
761 }
|
|
|
762 else
|
|
|
763 overlay_width = 0;
|
|
|
764
|
|
|
765 /* If there are left glyphs associated with any character in the
|
|
|
766 text block, then create a display block to handle them. */
|
|
|
767 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs))
|
|
|
768 create_left_glyph_block (w, dl, overlay_width);
|
|
|
769
|
|
|
770 /* If there are right glyphs associated with any character in the
|
|
|
771 text block, then create a display block to handle them. */
|
|
|
772 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs))
|
|
|
773 create_right_glyph_block (w, dl);
|
|
|
774
|
|
|
775 /* In the future additional types of display blocks may be generated
|
|
|
776 here. */
|
|
|
777
|
|
|
778 w->last_redisplay_pos = ret_bufpos;
|
|
|
779
|
|
|
780 return ret_bufpos;
|
|
|
781 }
|
|
|
782
|
|
|
783 /* Adds an hscroll glyph to a display block. If this is called, then
|
|
|
784 the block had better be empty.
|
|
|
785
|
|
|
786 Yes, there are multiple places where this function is called but
|
|
|
787 that is the way it has to be. Each calling function has to deal
|
|
|
788 with bi_start_col_enabled a little differently depending on the
|
|
|
789 object being worked with. */
|
|
|
790
|
|
|
791 static prop_block_dynarr *
|
|
|
792 add_hscroll_rune (pos_data *data)
|
|
|
793 {
|
|
|
794 struct glyph_block gb;
|
|
|
795 prop_block_dynarr *retval;
|
|
|
796 Bytind bi_old_cursor_bufpos = data->bi_cursor_bufpos;
|
|
|
797 unsigned int old_cursor_type = data->cursor_type;
|
|
|
798 Bytind bi_old_bufpos = data->bi_bufpos;
|
|
|
799
|
|
|
800 if (data->cursor_type == CURSOR_ON
|
|
|
801 && data->bi_cursor_bufpos >= data->bi_start_col_enabled
|
|
|
802 && data->bi_cursor_bufpos <= data->bi_bufpos)
|
|
|
803 {
|
|
|
804 data->bi_cursor_bufpos = data->bi_start_col_enabled;
|
|
|
805 }
|
|
|
806 else
|
|
|
807 {
|
|
|
808 data->cursor_type = NO_CURSOR;
|
|
|
809 }
|
|
|
810
|
|
|
811 data->bi_endpos = data->bi_bufpos;
|
|
|
812 data->bi_bufpos = data->bi_start_col_enabled;
|
|
|
813
|
|
|
814 gb.extent = Qnil;
|
|
|
815 gb.glyph = Vhscroll_glyph;
|
|
|
816 retval = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1,
|
|
|
817 GLYPH_CACHEL (XWINDOW (data->window),
|
|
|
818 HSCROLL_GLYPH_INDEX));
|
|
|
819
|
|
|
820 data->bi_endpos = 0;
|
|
|
821 data->bi_cursor_bufpos = bi_old_cursor_bufpos;
|
|
|
822 data->cursor_type = old_cursor_type;
|
|
|
823 data->bi_bufpos = bi_old_bufpos;
|
|
|
824
|
|
|
825 data->bi_start_col_enabled = 0;
|
|
|
826 return retval;
|
|
|
827 }
|
|
|
828
|
|
|
829 /* Adds a character rune to a display block. If there is not enough
|
|
|
830 room to fit the rune on the display block (as determined by the
|
|
|
831 MAX_PIXPOS) then it adds nothing and returns ADD_FAILED. */
|
|
|
832
|
|
|
833 static prop_block_dynarr *
|
|
|
834 add_emchar_rune (pos_data *data)
|
|
|
835 {
|
|
|
836 struct rune rb, *crb;
|
|
|
837 int width, local;
|
|
|
838
|
|
|
839 if (data->start_col)
|
|
|
840 {
|
|
|
841 data->start_col--;
|
|
|
842
|
|
|
843 if (data->start_col)
|
|
|
844 return NULL;
|
|
|
845 }
|
|
|
846
|
|
|
847 if (data->bi_start_col_enabled)
|
|
|
848 {
|
|
|
849 return add_hscroll_rune (data);
|
|
|
850 }
|
|
|
851
|
|
|
852 if (data->ch == '\n')
|
|
|
853 {
|
|
|
854 data->font_is_bogus = 0;
|
|
|
855 /* Cheesy end-of-line pseudo-character. */
|
|
|
856 width = data->blank_width;
|
|
|
857 }
|
|
|
858 else
|
|
|
859 {
|
|
|
860 Lisp_Object charset = CHAR_CHARSET (data->ch);
|
|
94
|
861 if (!EQ (charset, data->last_charset) ||
|
|
|
862 data->findex != data->last_findex)
|
|
0
|
863 {
|
|
|
864 /* OK, we need to do things the hard way. */
|
|
|
865 struct window *w = XWINDOW (data->window);
|
|
|
866 struct face_cachel *cachel = WINDOW_FACE_CACHEL (w, data->findex);
|
|
|
867 Lisp_Object font_instance =
|
|
|
868 ensure_face_cachel_contains_charset (cachel, data->window,
|
|
|
869 charset);
|
|
|
870 struct Lisp_Font_Instance *fi;
|
|
|
871
|
|
|
872 if (EQ (font_instance, Vthe_null_font_instance))
|
|
|
873 {
|
|
|
874 font_instance = FACE_CACHEL_FONT (cachel, Vcharset_ascii);
|
|
|
875 data->font_is_bogus = 1;
|
|
|
876 }
|
|
|
877 else
|
|
|
878 data->font_is_bogus = 0;
|
|
|
879
|
|
|
880 fi = XFONT_INSTANCE (font_instance);
|
|
|
881 if (!fi->proportional_p)
|
|
|
882 /* sweetness and light. */
|
|
|
883 data->last_char_width = fi->width;
|
|
|
884 else
|
|
|
885 data->last_char_width = -1;
|
|
2
|
886 data->new_ascent = max (data->new_ascent, (int) fi->ascent);
|
|
0
|
887 data->new_descent = max (data->new_descent, (int) fi->descent);
|
|
94
|
888 data->last_charset = charset;
|
|
|
889 data->last_findex = data->findex;
|
|
0
|
890 }
|
|
|
891
|
|
|
892 width = data->last_char_width;
|
|
|
893 if (width < 0)
|
|
|
894 {
|
|
|
895 /* bummer. Proportional fonts. */
|
|
|
896 width = redisplay_text_width_emchar_string (XWINDOW (data->window),
|
|
|
897 data->findex,
|
|
|
898 &data->ch, 1);
|
|
|
899 }
|
|
|
900 }
|
|
|
901
|
|
|
902 if (data->max_pixpos != -1 && (data->pixpos + width > data->max_pixpos))
|
|
|
903 {
|
|
|
904 return ADD_FAILED;
|
|
|
905 }
|
|
|
906
|
|
|
907 if (Dynarr_length (data->db->runes) < Dynarr_largest (data->db->runes))
|
|
|
908 {
|
|
|
909 crb = Dynarr_atp (data->db->runes, Dynarr_length (data->db->runes));
|
|
|
910 local = 0;
|
|
|
911 }
|
|
|
912 else
|
|
|
913 {
|
|
|
914 crb = &rb;
|
|
|
915 local = 1;
|
|
|
916 }
|
|
|
917
|
|
|
918 crb->findex = data->findex;
|
|
|
919 crb->xpos = data->pixpos;
|
|
|
920 crb->width = width;
|
|
|
921 if (data->bi_bufpos)
|
|
|
922 {
|
|
|
923 struct buffer *buf = XBUFFER (WINDOW_BUFFER (XWINDOW (data->window)));
|
|
|
924 crb->bufpos = bytind_to_bufpos (buf, data->bi_bufpos);
|
|
|
925 }
|
|
|
926 else if (data->is_modeline)
|
|
|
927 crb->bufpos = data->modeline_charpos;
|
|
|
928 else
|
|
|
929 /* fuckme if this shouldn't be an abort. */
|
|
|
930 /* abort (); fuckme harder, this abort gets tripped quite often,
|
|
|
931 in propagation and whatnot. #### fixme */
|
|
|
932 crb->bufpos = 0;
|
|
|
933 crb->type = RUNE_CHAR;
|
|
|
934 crb->object.chr.ch = data->font_is_bogus ? '~' : data->ch;
|
|
|
935 crb->endpos = 0;
|
|
|
936
|
|
|
937 if (data->cursor_type == CURSOR_ON)
|
|
|
938 {
|
|
|
939 if (data->bi_bufpos == data->bi_cursor_bufpos)
|
|
|
940 {
|
|
|
941 crb->cursor_type = CURSOR_ON;
|
|
|
942 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
943 }
|
|
|
944 else
|
|
|
945 crb->cursor_type = CURSOR_OFF;
|
|
|
946 }
|
|
|
947 else if (data->cursor_type == NEXT_CURSOR)
|
|
|
948 {
|
|
|
949 crb->cursor_type = CURSOR_ON;
|
|
|
950 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
951 data->cursor_type = NO_CURSOR;
|
|
|
952 }
|
|
|
953 else if (data->cursor_type == IGNORE_CURSOR)
|
|
|
954 crb->cursor_type = IGNORE_CURSOR;
|
|
|
955 else
|
|
|
956 crb->cursor_type = CURSOR_OFF;
|
|
|
957
|
|
|
958 if (local)
|
|
|
959 Dynarr_add (data->db->runes, *crb);
|
|
|
960 else
|
|
|
961 Dynarr_increment (data->db->runes);
|
|
|
962
|
|
|
963 data->pixpos += width;
|
|
|
964
|
|
|
965 return NULL;
|
|
|
966 }
|
|
|
967
|
|
|
968 /* Given a string C_STRING of length C_LENGTH, call add_emchar_rune
|
|
|
969 for each character in the string. Propagate any left-over data
|
|
|
970 unless NO_PROP is non-zero. */
|
|
|
971
|
|
|
972 static prop_block_dynarr *
|
|
|
973 add_bufbyte_string_runes (pos_data *data, Bufbyte *c_string,
|
|
|
974 Bytecount c_length, int no_prop)
|
|
|
975 {
|
|
|
976 Bufbyte *pos, *end = c_string + c_length;
|
|
|
977 prop_block_dynarr *prop;
|
|
|
978
|
|
|
979 /* #### This function is too simplistic. It needs to do the same
|
|
|
980 sort of character interpretation (display-table lookup,
|
|
|
981 ctl-arrow checking), etc. that create_text_block() does.
|
|
|
982 The functionality to do this in that routine needs to be
|
|
|
983 modularized. */
|
|
|
984
|
|
|
985 for (pos = c_string; pos < end;)
|
|
|
986 {
|
|
|
987 data->ch = charptr_emchar (pos);
|
|
|
988
|
|
|
989 prop = add_emchar_rune (data);
|
|
|
990
|
|
|
991 if (prop)
|
|
|
992 {
|
|
|
993 if (no_prop)
|
|
|
994 return ADD_FAILED;
|
|
|
995 else
|
|
|
996 {
|
|
|
997 struct prop_block pb;
|
|
|
998 Bytecount len = end - pos;
|
|
|
999 prop = Dynarr_new (struct prop_block);
|
|
|
1000
|
|
|
1001 pb.type = PROP_STRING;
|
|
|
1002 pb.data.p_string.str =
|
|
|
1003 (Bufbyte *) xmalloc (sizeof (Bufbyte) * len);
|
|
|
1004 strncpy ((char *) pb.data.p_string.str, (char *) pos, len);
|
|
|
1005 pb.data.p_string.len = len;
|
|
|
1006
|
|
|
1007 Dynarr_add (prop, pb);
|
|
|
1008 return prop;
|
|
|
1009 }
|
|
|
1010 }
|
|
|
1011 INC_CHARPTR (pos);
|
|
|
1012 assert (pos <= end);
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 return NULL;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 /* Add a single rune of the specified width. The area covered by this
|
|
|
1019 rune will be displayed in the foreground color of the associated
|
|
|
1020 face. */
|
|
|
1021
|
|
|
1022 static prop_block_dynarr *
|
|
|
1023 add_blank_rune (pos_data *data, struct window *w, int char_tab_width)
|
|
|
1024 {
|
|
|
1025 struct rune rb;
|
|
|
1026
|
|
|
1027 /* If data->start_col is not 0 then this call to add_blank_rune must have
|
|
|
1028 been to add it as a tab. */
|
|
|
1029 if (data->start_col)
|
|
|
1030 {
|
|
|
1031 /* assert (w != NULL) */
|
|
|
1032 prop_block_dynarr *retval;
|
|
|
1033
|
|
|
1034 /* If we have still not fully scrolled horizontally, subtract
|
|
|
1035 the width of this tab and return. */
|
|
|
1036 if (char_tab_width < data->start_col)
|
|
|
1037 {
|
|
|
1038 data->start_col -= char_tab_width;
|
|
|
1039 return NULL;
|
|
|
1040 }
|
|
|
1041 else if (char_tab_width == data->start_col)
|
|
|
1042 data->blank_width = 0;
|
|
|
1043 else
|
|
|
1044 {
|
|
|
1045 int spcwid = space_width (w);
|
|
|
1046
|
|
|
1047 if (spcwid >= data->blank_width)
|
|
|
1048 data->blank_width = 0;
|
|
|
1049 else
|
|
|
1050 data->blank_width -= spcwid;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 data->start_col = 0;
|
|
|
1054 retval = add_hscroll_rune (data);
|
|
|
1055
|
|
|
1056 /* Could be caused by the handling of the hscroll rune. */
|
|
|
1057 if (retval != NULL || !data->blank_width)
|
|
|
1058 return retval;
|
|
|
1059 }
|
|
|
1060
|
|
|
1061 /* Blank runes are always calculated to fit. */
|
|
|
1062 assert (data->pixpos + data->blank_width <= data->max_pixpos);
|
|
|
1063
|
|
|
1064 rb.findex = data->findex;
|
|
|
1065 rb.xpos = data->pixpos;
|
|
|
1066 rb.width = data->blank_width;
|
|
|
1067 if (data->bi_bufpos)
|
|
|
1068 {
|
|
|
1069 struct buffer *buf = XBUFFER (WINDOW_BUFFER (XWINDOW (data->window)));
|
|
|
1070 rb.bufpos = bytind_to_bufpos (buf, data->bi_bufpos);
|
|
|
1071 }
|
|
|
1072 else
|
|
|
1073 /* #### and this is really correct too? */
|
|
|
1074 rb.bufpos = 0;
|
|
|
1075 rb.endpos = 0;
|
|
|
1076 rb.type = RUNE_BLANK;
|
|
|
1077
|
|
|
1078 if (data->cursor_type == CURSOR_ON)
|
|
|
1079 {
|
|
|
1080 if (data->bi_bufpos == data->bi_cursor_bufpos)
|
|
|
1081 {
|
|
|
1082 rb.cursor_type = CURSOR_ON;
|
|
|
1083 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
1084 }
|
|
|
1085 else
|
|
|
1086 rb.cursor_type = CURSOR_OFF;
|
|
|
1087 }
|
|
|
1088 else if (data->cursor_type == NEXT_CURSOR)
|
|
|
1089 {
|
|
|
1090 rb.cursor_type = CURSOR_ON;
|
|
|
1091 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
1092 data->cursor_type = NO_CURSOR;
|
|
|
1093 }
|
|
|
1094 else
|
|
|
1095 rb.cursor_type = CURSOR_OFF;
|
|
|
1096
|
|
|
1097 Dynarr_add (data->db->runes, rb);
|
|
|
1098 data->pixpos += data->blank_width;
|
|
|
1099
|
|
|
1100 return NULL;
|
|
|
1101 }
|
|
|
1102
|
|
|
1103 /* Add runes representing a character in octal. */
|
|
|
1104
|
|
|
1105 #define ADD_NEXT_OCTAL_RUNE_CHAR do \
|
|
|
1106 { \
|
|
|
1107 if (add_failed || (add_failed = add_emchar_rune (data))) \
|
|
|
1108 { \
|
|
|
1109 struct prop_block pb; \
|
|
|
1110 if (!prop) \
|
|
|
1111 prop = Dynarr_new (struct prop_block); \
|
|
|
1112 \
|
|
|
1113 pb.type = PROP_CHAR; \
|
|
|
1114 pb.data.p_char.ch = data->ch; \
|
|
|
1115 pb.data.p_char.cursor_type = data->cursor_type; \
|
|
|
1116 Dynarr_add (prop, pb); \
|
|
|
1117 } \
|
|
|
1118 } while (0)
|
|
|
1119
|
|
|
1120 static prop_block_dynarr *
|
|
|
1121 add_octal_runes (pos_data *data)
|
|
|
1122 {
|
|
|
1123 prop_block_dynarr *prop, *add_failed;
|
|
|
1124 Emchar orig_char = data->ch;
|
|
|
1125 unsigned int orig_cursor_type = data->cursor_type;
|
|
|
1126
|
|
|
1127 /* Initialize */
|
|
|
1128 prop = NULL;
|
|
|
1129 add_failed = NULL;
|
|
|
1130
|
|
|
1131 if (data->start_col)
|
|
|
1132 data->start_col--;
|
|
|
1133
|
|
|
1134 if (!data->start_col)
|
|
|
1135 {
|
|
|
1136 if (data->bi_start_col_enabled)
|
|
|
1137 {
|
|
|
1138 add_failed = add_hscroll_rune (data);
|
|
|
1139 }
|
|
|
1140 else
|
|
|
1141 {
|
|
|
1142 struct glyph_block gb;
|
|
|
1143 struct window *w = XWINDOW (data->window);
|
|
|
1144
|
|
|
1145 gb.extent = Qnil;
|
|
|
1146 gb.glyph = Voctal_escape_glyph;
|
|
|
1147 add_failed =
|
|
|
1148 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1,
|
|
|
1149 GLYPH_CACHEL (w, OCT_ESC_GLYPH_INDEX));
|
|
|
1150 }
|
|
|
1151 }
|
|
|
1152
|
|
|
1153 /* We only propagate information if the glyph was partially
|
|
|
1154 added. */
|
|
|
1155 if (add_failed)
|
|
|
1156 return add_failed;
|
|
|
1157
|
|
|
1158 data->cursor_type = IGNORE_CURSOR;
|
|
|
1159
|
|
|
1160 if (data->ch >= 0x100)
|
|
|
1161 {
|
|
|
1162 /* If the character is an extended Mule character, it could have
|
|
|
1163 up to 19 bits. For the moment, we treat it as a seven-digit
|
|
|
1164 octal number. This is not that pretty, but whatever. */
|
|
|
1165 data->ch = (7 & (orig_char >> 18)) + '0';
|
|
|
1166 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1167
|
|
|
1168 data->ch = (7 & (orig_char >> 15)) + '0';
|
|
|
1169 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1170
|
|
|
1171 data->ch = (7 & (orig_char >> 12)) + '0';
|
|
|
1172 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1173
|
|
|
1174 data->ch = (7 & (orig_char >> 9)) + '0';
|
|
|
1175 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 data->ch = (7 & (orig_char >> 6)) + '0';
|
|
|
1179 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1180
|
|
|
1181 data->ch = (7 & (orig_char >> 3)) + '0';
|
|
|
1182 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1183
|
|
|
1184 data->ch = (7 & orig_char) + '0';
|
|
|
1185 ADD_NEXT_OCTAL_RUNE_CHAR;
|
|
|
1186
|
|
|
1187 data->cursor_type = orig_cursor_type;
|
|
|
1188 return prop;
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 #undef ADD_NEXT_OCTAL_RUNE_CHAR
|
|
|
1192
|
|
|
1193 /* Add runes representing a control character to a display block. */
|
|
|
1194
|
|
|
1195 static prop_block_dynarr *
|
|
|
1196 add_control_char_runes (pos_data *data, struct buffer *b)
|
|
|
1197 {
|
|
|
1198 if (!NILP (b->ctl_arrow))
|
|
|
1199 {
|
|
|
1200 prop_block_dynarr *prop;
|
|
|
1201 Emchar orig_char = data->ch;
|
|
|
1202 unsigned int old_cursor_type = data->cursor_type;
|
|
|
1203
|
|
|
1204 /* Initialize */
|
|
|
1205 prop = NULL;
|
|
|
1206
|
|
|
1207 if (data->start_col)
|
|
|
1208 data->start_col--;
|
|
|
1209
|
|
|
1210 if (!data->start_col)
|
|
|
1211 {
|
|
|
1212 if (data->bi_start_col_enabled)
|
|
|
1213 {
|
|
|
1214 prop_block_dynarr *retval;
|
|
|
1215
|
|
|
1216 retval = add_hscroll_rune (data);
|
|
|
1217 if (retval)
|
|
|
1218 return retval;
|
|
|
1219 }
|
|
|
1220 else
|
|
|
1221 {
|
|
|
1222 struct glyph_block gb;
|
|
|
1223 struct window *w = XWINDOW (data->window);
|
|
|
1224
|
|
|
1225 gb.extent = Qnil;
|
|
|
1226 gb.glyph = Vcontrol_arrow_glyph;
|
|
|
1227
|
|
|
1228 /* We only propagate information if the glyph was partially
|
|
|
1229 added. */
|
|
|
1230 if (add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1,
|
|
|
1231 GLYPH_CACHEL (w, CONTROL_GLYPH_INDEX)))
|
|
|
1232 return ADD_FAILED;
|
|
|
1233 }
|
|
|
1234 }
|
|
|
1235
|
|
|
1236 if (orig_char == 0177)
|
|
|
1237 data->ch = '?';
|
|
|
1238 else
|
|
|
1239 data->ch = orig_char ^ 0100;
|
|
|
1240 data->cursor_type = IGNORE_CURSOR;
|
|
|
1241
|
|
|
1242 if (add_emchar_rune (data))
|
|
|
1243 {
|
|
|
1244 struct prop_block pb;
|
|
|
1245 if (!prop)
|
|
|
1246 prop = Dynarr_new (struct prop_block);
|
|
|
1247
|
|
|
1248 pb.type = PROP_CHAR;
|
|
|
1249 pb.data.p_char.ch = data->ch;
|
|
|
1250 pb.data.p_char.cursor_type = data->cursor_type;
|
|
|
1251 Dynarr_add (prop, pb);
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 data->cursor_type = old_cursor_type;
|
|
|
1255 return prop;
|
|
|
1256 }
|
|
|
1257 else
|
|
|
1258 {
|
|
|
1259 return add_octal_runes (data);
|
|
|
1260 }
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 /* Given a display table entry, call the appropriate functions to
|
|
|
1264 display each element of the entry. */
|
|
|
1265
|
|
|
1266 static prop_block_dynarr *
|
|
|
1267 add_disp_table_entry_runes (pos_data *data, Lisp_Object entry)
|
|
|
1268 {
|
|
|
1269 prop_block_dynarr *prop = NULL;
|
|
|
1270
|
|
|
1271 if (VECTORP (entry))
|
|
|
1272 {
|
|
|
1273 struct Lisp_Vector *de = XVECTOR (entry);
|
|
|
1274 long len = vector_length (de);
|
|
|
1275 int elt;
|
|
|
1276
|
|
|
1277 for (elt = 0; elt < len; elt++)
|
|
|
1278 {
|
|
|
1279 if (NILP (de->contents[elt]))
|
|
|
1280 continue;
|
|
|
1281 else if (STRINGP (de->contents[elt]))
|
|
|
1282 {
|
|
|
1283 prop =
|
|
|
1284 add_bufbyte_string_runes
|
|
|
1285 (data,
|
|
16
|
1286 XSTRING_DATA (de->contents[elt]),
|
|
|
1287 XSTRING_LENGTH (de->contents[elt]),
|
|
0
|
1288 0);
|
|
|
1289 }
|
|
|
1290 else if (GLYPHP (de->contents[elt]))
|
|
|
1291 {
|
|
|
1292 if (data->start_col)
|
|
|
1293 data->start_col--;
|
|
|
1294
|
|
|
1295 if (!data->start_col && data->bi_start_col_enabled)
|
|
|
1296 {
|
|
|
1297 prop = add_hscroll_rune (data);
|
|
|
1298 }
|
|
|
1299 else
|
|
|
1300 {
|
|
|
1301 struct glyph_block gb;
|
|
|
1302
|
|
|
1303 gb.glyph = de->contents[elt];
|
|
|
1304 gb.extent = Qnil;
|
|
|
1305 prop = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0);
|
|
|
1306 }
|
|
|
1307 }
|
|
|
1308 else if (CHAR_OR_CHAR_INTP (de->contents[elt]))
|
|
|
1309 {
|
|
|
1310 data->ch = XCHAR_OR_CHAR_INT (de->contents[elt]);
|
|
|
1311 prop = add_emchar_rune (data);
|
|
|
1312 }
|
|
|
1313 /* Else blow it off because someone added a bad entry and we
|
|
|
1314 don't have any safe way of signaling an error. */
|
|
|
1315
|
|
|
1316 /* #### Still need to add any remaining elements to the
|
|
|
1317 propagation information. */
|
|
|
1318 if (prop)
|
|
|
1319 return prop;
|
|
|
1320 }
|
|
|
1321 }
|
|
|
1322 else if (STRINGP (entry))
|
|
|
1323 {
|
|
|
1324 prop = add_bufbyte_string_runes (data,
|
|
16
|
1325 XSTRING_DATA (entry),
|
|
|
1326 XSTRING_LENGTH (entry),
|
|
0
|
1327 0);
|
|
|
1328 }
|
|
|
1329 else if (GLYPHP (entry))
|
|
|
1330 {
|
|
|
1331 if (data->start_col)
|
|
|
1332 data->start_col--;
|
|
|
1333
|
|
|
1334 if (!data->start_col && data->bi_start_col_enabled)
|
|
|
1335 {
|
|
|
1336 prop = add_hscroll_rune (data);
|
|
|
1337 }
|
|
|
1338 else
|
|
|
1339 {
|
|
|
1340 struct glyph_block gb;
|
|
|
1341
|
|
|
1342 gb.glyph = entry;
|
|
|
1343 gb.extent = Qnil;
|
|
|
1344 prop = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0);
|
|
|
1345 }
|
|
|
1346 }
|
|
|
1347 else if (CHAR_OR_CHAR_INTP (entry))
|
|
|
1348 {
|
|
|
1349 data->ch = XCHAR_OR_CHAR_INT (entry);
|
|
|
1350 prop = add_emchar_rune (data);
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 /* Else blow it off because someone added a bad entry and we don't
|
|
|
1354 have any safe way of signaling an error. Hey, this comment
|
|
|
1355 sounds familiar. */
|
|
|
1356 return prop;
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 /* Add runes which were propagated from the previous line. */
|
|
|
1360
|
|
|
1361 static prop_block_dynarr *
|
|
|
1362 add_propagation_runes (prop_block_dynarr **prop, pos_data *data)
|
|
|
1363 {
|
|
|
1364 /* #### Remember to handle start_col parameter of data when the rest of
|
|
|
1365 this is finished. */
|
|
|
1366 /* #### Chuck -- I've redone this function a bit. It looked like the
|
|
|
1367 case of not all the propagation blocks being added was not handled
|
|
|
1368 well. */
|
|
|
1369 /* #### Chuck -- I also think the double indirection of PROP is kind
|
|
|
1370 of bogus. A cleaner solution is just to check for
|
|
|
1371 Dynarr_length (prop) > 0. */
|
|
|
1372 /* #### This function also doesn't even pay attention to ADD_FAILED!
|
|
|
1373 This is seriously fucked! Seven ####'s in 130 lines -- is that a
|
|
|
1374 record? */
|
|
|
1375 int elt;
|
|
|
1376 prop_block_dynarr *add_failed;
|
|
|
1377 Bytind bi_old_cursor_bufpos = data->bi_cursor_bufpos;
|
|
|
1378 unsigned int old_cursor_type = data->cursor_type;
|
|
|
1379
|
|
|
1380 for (elt = 0; elt < Dynarr_length (*prop); elt++)
|
|
|
1381 {
|
|
|
1382 struct prop_block *pb = Dynarr_atp (*prop, elt);
|
|
|
1383
|
|
|
1384 switch (pb->type)
|
|
|
1385 {
|
|
|
1386 case PROP_CHAR:
|
|
|
1387 data->ch = pb->data.p_char.ch;
|
|
|
1388 data->bi_cursor_bufpos = pb->data.p_char.bi_cursor_bufpos;
|
|
|
1389 data->cursor_type = pb->data.p_char.cursor_type;
|
|
|
1390 add_failed = add_emchar_rune (data);
|
|
|
1391
|
|
|
1392 if (add_failed)
|
|
|
1393 goto oops_no_more_space;
|
|
|
1394 break;
|
|
|
1395 case PROP_STRING:
|
|
|
1396 if (pb->data.p_string.str)
|
|
|
1397 xfree (pb->data.p_string.str);
|
|
|
1398 /* #### bogus bogus -- this doesn't do anything!
|
|
|
1399 Should probably call add_bufbyte_string_runes(),
|
|
|
1400 once that function is fixed. */
|
|
|
1401 break;
|
|
|
1402 case PROP_MINIBUF_PROMPT:
|
|
|
1403 {
|
|
|
1404 face_index old_findex = data->findex;
|
|
|
1405 Bytind bi_old_bufpos = data->bi_bufpos;
|
|
|
1406
|
|
|
1407 data->findex = DEFAULT_INDEX;
|
|
|
1408 data->bi_bufpos = 0;
|
|
|
1409 data->cursor_type = NO_CURSOR;
|
|
|
1410
|
|
|
1411 while (pb->data.p_string.len > 0)
|
|
|
1412 {
|
|
|
1413 data->ch = charptr_emchar (pb->data.p_string.str);
|
|
|
1414 add_failed = add_emchar_rune (data);
|
|
|
1415
|
|
|
1416 if (add_failed)
|
|
|
1417 {
|
|
|
1418 data->findex = old_findex;
|
|
|
1419 data->bi_bufpos = bi_old_bufpos;
|
|
|
1420 goto oops_no_more_space;
|
|
|
1421 }
|
|
|
1422 else
|
|
|
1423 {
|
|
|
1424 /* Complicated equivalent of ptr++, len-- */
|
|
|
1425 Bufbyte *oldpos = pb->data.p_string.str;
|
|
|
1426 INC_CHARPTR (pb->data.p_string.str);
|
|
|
1427 pb->data.p_string.len -= pb->data.p_string.str - oldpos;
|
|
|
1428 }
|
|
|
1429 }
|
|
|
1430
|
|
|
1431 data->findex = old_findex;
|
|
|
1432 /* ##### FIXME FIXME FIXME -- Upon successful return from
|
|
|
1433 this function, data->bi_bufpos is automatically incremented.
|
|
|
1434 However, we don't want that to happen if we were adding
|
|
|
1435 the minibuffer prompt. */
|
|
|
1436 {
|
|
|
1437 struct buffer *buf =
|
|
|
1438 XBUFFER (WINDOW_BUFFER (XWINDOW (data->window)));
|
|
|
1439 /* #### Chuck fix this shit or I'm gonna scream! */
|
|
|
1440 if (bi_old_bufpos > BI_BUF_BEGV (buf))
|
|
|
1441 data->bi_bufpos = prev_bytind (buf, bi_old_bufpos);
|
|
|
1442 else
|
|
|
1443 /* #### is this correct? Does anyone know?
|
|
|
1444 Does anyone care? Is this a cheesy hack or what? */
|
|
|
1445 data->bi_bufpos = BI_BUF_BEGV (buf) - 1;
|
|
|
1446 }
|
|
|
1447 }
|
|
|
1448 break;
|
|
|
1449 case PROP_BLANK:
|
|
|
1450 {
|
|
|
1451 /* #### I think it's unnecessary and misleading to preserve
|
|
|
1452 the blank_width, as it implies that the value carries
|
|
|
1453 over from one rune to the next, which is wrong. */
|
|
|
1454 int old_width = data->blank_width;
|
|
|
1455 face_index old_findex = data->findex;
|
|
|
1456
|
|
|
1457 data->findex = pb->data.p_blank.findex;
|
|
|
1458 data->blank_width = pb->data.p_blank.width;
|
|
|
1459 data->bi_cursor_bufpos = 0;
|
|
|
1460 data->cursor_type = IGNORE_CURSOR;
|
|
|
1461
|
|
|
1462 if (data->pixpos + data->blank_width > data->max_pixpos)
|
|
|
1463 data->blank_width = data->max_pixpos - data->pixpos;
|
|
|
1464
|
|
|
1465 /* We pass a bogus value of char_tab_width. It shouldn't
|
|
|
1466 matter because unless something is really screwed up
|
|
|
1467 this call won't cause that arg to be used. */
|
|
|
1468 add_failed = add_blank_rune (data, XWINDOW (data->window), 0);
|
|
|
1469
|
|
|
1470 /* This can happen in the case where we have a tab which
|
|
|
1471 is wider than the window. */
|
|
|
1472 if (data->blank_width != pb->data.p_blank.width)
|
|
|
1473 {
|
|
|
1474 pb->data.p_blank.width -= data->blank_width;
|
|
|
1475 add_failed = ADD_FAILED;
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 data->findex = old_findex;
|
|
|
1479 data->blank_width = old_width;
|
|
|
1480
|
|
|
1481 if (add_failed)
|
|
|
1482 goto oops_no_more_space;
|
|
|
1483 }
|
|
|
1484 break;
|
|
|
1485 default:
|
|
|
1486 abort ();
|
|
|
1487 }
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 oops_no_more_space:
|
|
|
1491
|
|
|
1492 data->bi_cursor_bufpos = bi_old_cursor_bufpos;
|
|
|
1493 data->cursor_type = old_cursor_type;
|
|
|
1494 if (elt < Dynarr_length (*prop))
|
|
|
1495 {
|
|
|
1496 Dynarr_delete_many (*prop, 0, elt);
|
|
|
1497 return *prop;
|
|
|
1498 }
|
|
|
1499 else
|
|
|
1500 {
|
|
|
1501 Dynarr_free (*prop);
|
|
|
1502 return NULL;
|
|
|
1503 }
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 /* Add 'text layout glyphs at position POS_TYPE that are contained to
|
|
|
1507 the display block, but add all other types to the appropriate list
|
|
|
1508 of the display line. They will be added later by different
|
|
|
1509 routines. */
|
|
|
1510
|
|
|
1511 static prop_block_dynarr *
|
|
|
1512 add_glyph_rune (pos_data *data, struct glyph_block *gb, int pos_type,
|
|
|
1513 int allow_cursor, struct glyph_cachel *cachel)
|
|
|
1514 {
|
|
|
1515 struct window *w = XWINDOW (data->window);
|
|
|
1516
|
|
|
1517 /* A nil extent indicates a special glyph (ex. truncator). */
|
|
|
1518 if (NILP (gb->extent)
|
|
|
1519 || (pos_type == BEGIN_GLYPHS &&
|
|
|
1520 extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT)
|
|
|
1521 || (pos_type == END_GLYPHS &&
|
|
|
1522 extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT))
|
|
|
1523 {
|
|
|
1524 struct rune rb;
|
|
|
1525 int width;
|
|
|
1526 int xoffset = 0;
|
|
|
1527 int ascent, descent;
|
|
|
1528 Lisp_Object baseline;
|
|
|
1529 Lisp_Object face;
|
|
|
1530
|
|
|
1531 if (cachel)
|
|
|
1532 width = cachel->width;
|
|
|
1533 else
|
|
|
1534 width = glyph_width (gb->glyph, Qnil, data->findex, data->window);
|
|
|
1535
|
|
|
1536 if (!width)
|
|
|
1537 return NULL;
|
|
|
1538
|
|
|
1539 if (data->start_col)
|
|
|
1540 {
|
|
|
1541 prop_block_dynarr *retval;
|
|
|
1542 int glyph_char_width = width / space_width (w);
|
|
|
1543
|
|
|
1544 /* If we still have not fully scrolled horizontally after
|
|
|
1545 taking into account the width of the glyph, subtract its
|
|
|
1546 width and return. */
|
|
|
1547 if (glyph_char_width < data->start_col)
|
|
|
1548 {
|
|
|
1549 data->start_col -= glyph_char_width;
|
|
|
1550 return NULL;
|
|
|
1551 }
|
|
|
1552 else if (glyph_char_width == data->start_col)
|
|
|
1553 width = 0;
|
|
|
1554 else
|
|
|
1555 {
|
|
|
1556 xoffset = space_width (w) * data->start_col;
|
|
|
1557 width -= xoffset;
|
|
|
1558
|
|
|
1559 /* #### Can this happen? */
|
|
|
1560 if (width < 0)
|
|
|
1561 width = 0;
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 data->start_col = 0;
|
|
|
1565 retval = add_hscroll_rune (data);
|
|
|
1566
|
|
|
1567 /* Could be caused by the handling of the hscroll rune. */
|
|
|
1568 if (retval != NULL || !width)
|
|
|
1569 return retval;
|
|
|
1570 }
|
|
|
1571 else
|
|
|
1572 xoffset = 0;
|
|
|
1573
|
|
|
1574 if (data->pixpos + width > data->max_pixpos)
|
|
|
1575 {
|
|
|
1576 /* If this is the first object we are attempting to add to
|
|
|
1577 the line then we ignore the horizontal_clip threshold.
|
|
|
1578 Otherwise we will loop until the bottom of the window
|
|
|
1579 continually failing to add this glyph because it is wider
|
|
|
1580 than the window. We could alternatively just completely
|
|
|
1581 ignore the glyph and proceed from there but I think that
|
|
|
1582 this is a better solution. */
|
|
|
1583 if (Dynarr_length (data->db->runes)
|
|
|
1584 && data->max_pixpos - data->pixpos < horizontal_clip)
|
|
|
1585 return ADD_FAILED;
|
|
|
1586 else
|
|
|
1587 width = data->max_pixpos - data->pixpos;
|
|
|
1588 }
|
|
|
1589
|
|
|
1590 if (cachel)
|
|
|
1591 {
|
|
|
1592 ascent = cachel->ascent;
|
|
|
1593 descent = cachel->descent;
|
|
|
1594 }
|
|
|
1595 else
|
|
|
1596 {
|
|
|
1597 ascent = glyph_ascent (gb->glyph, Qnil, data->findex, data->window);
|
|
|
1598 descent = glyph_descent (gb->glyph, Qnil, data->findex,
|
|
|
1599 data->window);
|
|
|
1600 }
|
|
|
1601
|
|
|
1602 baseline = glyph_baseline (gb->glyph, data->window);
|
|
|
1603
|
|
|
1604 if (glyph_contrib_p (gb->glyph, data->window))
|
|
|
1605 {
|
|
|
1606 /* A pixmap that has not had a baseline explicitly set. Its
|
|
|
1607 contribution will be determined later. */
|
|
|
1608 if (NILP (baseline))
|
|
|
1609 {
|
|
|
1610 int height = ascent + descent;
|
|
|
1611 data->max_pixmap_height = max (data->max_pixmap_height, height);
|
|
|
1612 }
|
|
|
1613
|
|
|
1614 /* A string so determine contribution normally. */
|
|
|
1615 else if (EQ (baseline, Qt))
|
|
|
1616 {
|
|
|
1617 data->new_ascent = max (data->new_ascent, ascent);
|
|
|
1618 data->new_descent = max (data->new_descent, descent);
|
|
|
1619 }
|
|
|
1620
|
|
|
1621 /* A pixmap with an explicitly set baseline. We determine the
|
|
|
1622 contribution here. */
|
|
|
1623 else if (INTP (baseline))
|
|
|
1624 {
|
|
|
1625 int height = ascent + descent;
|
|
|
1626 int pix_ascent, pix_descent;
|
|
|
1627
|
|
|
1628 pix_ascent = height * XINT (baseline) / 100;
|
|
|
1629 pix_descent = height - pix_ascent;
|
|
|
1630
|
|
|
1631 data->new_ascent = max (data->new_ascent, pix_ascent);
|
|
|
1632 data->new_descent = max (data->new_descent, pix_descent);
|
|
|
1633 }
|
|
|
1634
|
|
|
1635 /* Otherwise something is screwed up. */
|
|
|
1636 else
|
|
|
1637 abort ();
|
|
|
1638 }
|
|
|
1639
|
|
|
1640 face = glyph_face (gb->glyph, data->window);
|
|
|
1641 if (NILP (face))
|
|
|
1642 rb.findex = data->findex;
|
|
|
1643 else
|
|
|
1644 rb.findex = get_builtin_face_cache_index (w, face);
|
|
|
1645
|
|
|
1646 rb.xpos = data->pixpos;
|
|
|
1647 rb.width = width;
|
|
|
1648 rb.bufpos = 0; /* glyphs are never "at" anywhere */
|
|
|
1649 if (data->bi_endpos)
|
|
|
1650 {
|
|
|
1651 /* #### is this necessary at all? */
|
|
|
1652 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w));
|
|
|
1653 rb.endpos = bytind_to_bufpos (buf, data->bi_endpos);
|
|
|
1654 }
|
|
|
1655 else
|
|
|
1656 rb.endpos = 0;
|
|
|
1657 rb.type = RUNE_DGLYPH;
|
|
|
1658 /* #### Ben sez: this is way bogus if the glyph is a string.
|
|
|
1659 You should not make the output routines have to cope with
|
|
|
1660 this. The string could contain Mule characters, or non-
|
|
|
1661 printable characters, or characters to be passed through
|
|
|
1662 the display table, or non-character objects (when this gets
|
|
|
1663 implemented), etc. Instead, this routine here should parse
|
|
|
1664 the string into a series of runes. */
|
|
|
1665 rb.object.dglyph.glyph = gb->glyph;
|
|
|
1666 rb.object.dglyph.extent = gb->extent;
|
|
|
1667 rb.object.dglyph.xoffset = xoffset;
|
|
|
1668
|
|
|
1669 if (allow_cursor)
|
|
|
1670 {
|
|
|
1671 {
|
|
|
1672 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w));
|
|
|
1673 rb.bufpos = bytind_to_bufpos (buf, data->bi_bufpos);
|
|
|
1674 }
|
|
|
1675
|
|
|
1676 if (data->cursor_type == CURSOR_ON)
|
|
|
1677 {
|
|
|
1678 if (data->bi_bufpos == data->bi_cursor_bufpos)
|
|
|
1679 {
|
|
|
1680 rb.cursor_type = CURSOR_ON;
|
|
|
1681 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
1682 }
|
|
|
1683 else
|
|
|
1684 rb.cursor_type = CURSOR_OFF;
|
|
|
1685 }
|
|
|
1686 else if (data->cursor_type == NEXT_CURSOR)
|
|
|
1687 {
|
|
|
1688 rb.cursor_type = CURSOR_ON;
|
|
|
1689 data->cursor_x = Dynarr_length (data->db->runes);
|
|
|
1690 data->cursor_type = NO_CURSOR;
|
|
|
1691 }
|
|
|
1692 else if (data->cursor_type == IGNORE_CURSOR)
|
|
|
1693 rb.cursor_type = IGNORE_CURSOR;
|
|
|
1694 else if (data->cursor_type == NO_CURSOR)
|
|
|
1695 rb.cursor_type = NO_CURSOR;
|
|
|
1696 else
|
|
|
1697 rb.cursor_type = CURSOR_OFF;
|
|
|
1698 }
|
|
|
1699 else
|
|
|
1700 rb.cursor_type = CURSOR_OFF;
|
|
|
1701
|
|
|
1702 Dynarr_add (data->db->runes, rb);
|
|
|
1703 data->pixpos += width;
|
|
|
1704
|
|
|
1705 return NULL;
|
|
|
1706 }
|
|
|
1707 else
|
|
|
1708 {
|
|
|
1709 if (!NILP (glyph_face (gb->glyph, data->window)))
|
|
|
1710 gb->findex =
|
|
|
1711 get_builtin_face_cache_index (w, glyph_face (gb->glyph,
|
|
|
1712 data->window));
|
|
|
1713 else
|
|
|
1714 gb->findex = data->findex;
|
|
|
1715
|
|
|
1716 if (pos_type == BEGIN_GLYPHS)
|
|
|
1717 {
|
|
|
1718 if (!data->dl->left_glyphs)
|
|
|
1719 data->dl->left_glyphs = Dynarr_new (struct glyph_block);
|
|
|
1720 Dynarr_add (data->dl->left_glyphs, *gb);
|
|
|
1721 return NULL;
|
|
|
1722 }
|
|
|
1723 else if (pos_type == END_GLYPHS)
|
|
|
1724 {
|
|
|
1725 if (!data->dl->right_glyphs)
|
|
|
1726 data->dl->right_glyphs = Dynarr_new (struct glyph_block);
|
|
|
1727 Dynarr_add (data->dl->right_glyphs, *gb);
|
|
|
1728 return NULL;
|
|
|
1729 }
|
|
|
1730 else
|
|
|
1731 abort (); /* there are no unknown types */
|
|
|
1732 }
|
|
|
1733
|
|
|
1734 return NULL; /* shut up compiler */
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 /* Add all glyphs at position POS_TYPE that are contained in the given
|
|
|
1738 data. */
|
|
|
1739
|
|
|
1740 static prop_block_dynarr *
|
|
|
1741 add_glyph_runes (pos_data *data, int pos_type)
|
|
|
1742 {
|
|
|
1743 /* #### This still needs to handle the start_col parameter. Duh, Chuck,
|
|
|
1744 why didn't you just modify add_glyph_rune in the first place? */
|
|
|
1745 int elt;
|
|
|
1746 glyph_block_dynarr *glyph_arr = (pos_type == BEGIN_GLYPHS
|
|
|
1747 ? data->ef->begin_glyphs
|
|
|
1748 : data->ef->end_glyphs);
|
|
|
1749 prop_block_dynarr *prop;
|
|
|
1750
|
|
|
1751 for (elt = 0; elt < Dynarr_length (glyph_arr); elt++)
|
|
|
1752 {
|
|
|
1753 prop = add_glyph_rune (data, Dynarr_atp (glyph_arr, elt), pos_type, 0,
|
|
|
1754 0);
|
|
|
1755
|
|
|
1756 if (prop)
|
|
|
1757 {
|
|
|
1758 /* #### Add some propagation information. */
|
|
|
1759 return prop;
|
|
|
1760 }
|
|
|
1761 }
|
|
|
1762
|
|
|
1763 Dynarr_reset (glyph_arr);
|
|
|
1764
|
|
|
1765 return NULL;
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 /* Given a position for a buffer in a window, ensure that the given
|
|
|
1769 display line DL accurately represents the text on a line starting
|
|
|
1770 at the given position.
|
|
|
1771
|
|
|
1772 NOTE NOTE NOTE NOTE: This function works with and returns Bytinds.
|
|
|
1773 You must do appropriate conversion. */
|
|
|
1774
|
|
|
1775 static Bytind
|
|
|
1776 create_text_block (struct window *w, struct display_line *dl,
|
|
|
1777 Bytind bi_start_pos, int start_col,
|
|
|
1778 prop_block_dynarr **prop, int type)
|
|
|
1779 {
|
|
|
1780 struct frame *f = XFRAME (w->frame);
|
|
|
1781 struct buffer *b = XBUFFER (w->buffer);
|
|
|
1782 struct device *d = XDEVICE (f->device);
|
|
|
1783
|
|
|
1784 pos_data data;
|
|
|
1785 struct Lisp_Vector *dt = 0;
|
|
|
1786
|
|
|
1787 /* Don't display anything in the minibuffer if this window is not on
|
|
|
1788 a selected frame. We consider all other windows to be active
|
|
|
1789 minibuffers as it simplifies the coding. */
|
|
|
1790 int active_minibuffer = (!MINI_WINDOW_P (w) ||
|
|
|
1791 (f == device_selected_frame (d)) ||
|
|
|
1792 is_surrogate_for_selected_frame (f));
|
|
|
1793
|
|
|
1794 int truncate_win = window_truncation_on (w);
|
|
|
1795 int end_glyph_width;
|
|
|
1796
|
|
|
1797 /* If the buffer's value of selective_display is an integer then
|
|
|
1798 only lines that start with less than selective_display columns of
|
|
|
1799 space will be displayed. If selective_display is t then all text
|
|
|
1800 after a ^M is invisible. */
|
|
|
1801 int selective = (INTP (b->selective_display)
|
|
|
1802 ? XINT (b->selective_display)
|
|
|
1803 : ((!NILP (b->selective_display) ? -1 : 0)));
|
|
|
1804
|
|
|
1805 /* The variable ctl-arrow allows the user to specify what characters
|
|
|
1806 can actually be displayed and which octal should be used for.
|
|
|
1807 #### This variable should probably have some rethought done to
|
|
|
1808 it.
|
|
|
1809
|
|
|
1810 #### It would also be really nice if you could specify that
|
|
|
1811 the characters come out in hex instead of in octal. Mule
|
|
|
1812 does that by adding a ctl-hexa variable similar to ctl-arrow,
|
|
|
1813 but that's bogus -- we need a more general solution. I
|
|
|
1814 think you need to extend the concept of display tables
|
|
|
1815 into a more general conversion mechanism. Ideally you
|
|
|
1816 could specify a Lisp function that converts characters,
|
|
|
1817 but this violates the Second Golden Rule and besides would
|
|
|
1818 make things way way way way slow. An idea I like is to
|
|
|
1819 be able to specify multiple display tables instead of just
|
|
|
1820 one. Each display table can specify conversions for some
|
|
|
1821 characters and leave others unchanged. The way the
|
|
|
1822 character gets displayed is determined by the first display
|
|
|
1823 table with a binding for that character. This way, you
|
|
|
1824 could call a function `enable-hex-display' that adds a
|
|
|
1825 pre-defined hex display-table (or maybe computes one if
|
|
|
1826 you give weird parameters to the function) and adds it
|
|
|
1827 to the list of display tables for the current buffer.
|
|
|
1828
|
|
|
1829 Unfortunately there are still problems dealing with Mule
|
|
|
1830 characters. For example, maybe I want to specify that
|
|
|
1831 all extended characters (i.e. >= 256) are displayed in hex.
|
|
|
1832 It's not reasonable to create a mapping for all possible
|
|
|
1833 such characters, because there are about 2^19 of them.
|
|
|
1834 One way of dealing with this is to extend the concept
|
|
|
1835 of what a display table is. Currently it's only allowed
|
|
|
1836 to be a 256-entry vector. Instead, it should be something
|
|
|
1837 like:
|
|
|
1838
|
|
|
1839 a) A 256-entry vector, for backward compatibility
|
|
|
1840 b) Some sort of hashtable, mapping characters to values
|
|
|
1841 c) A list that specifies a range of values and the
|
|
|
1842 mapping to provide for those values.
|
|
|
1843
|
|
|
1844 Also, extend the concept of "mapping" to include a
|
|
|
1845 printf-like spec. Then, you could make all extended
|
|
|
1846 characters show up as hex with a display table like
|
|
|
1847
|
|
|
1848 ((256 . 524288) . "%x")
|
|
|
1849
|
|
|
1850 Since more than one display table is possible, you have
|
|
|
1851 great flexibility in mapping ranges of characters.
|
|
|
1852 */
|
|
|
1853 Emchar printable_min = (CHAR_OR_CHAR_INTP (b->ctl_arrow)
|
|
|
1854 ? XCHAR_OR_CHAR_INT (b->ctl_arrow)
|
|
|
1855 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil))
|
|
|
1856 ? 255 : 160));
|
|
|
1857
|
|
|
1858 /* The text display block for this display line. */
|
|
|
1859 struct display_block *db = get_display_block_from_line (dl, TEXT);
|
|
|
1860
|
|
|
1861 /* The first time through the main loop we need to force the glyph
|
|
|
1862 data to be updated. */
|
|
|
1863 int initial = 1;
|
|
|
1864
|
|
|
1865 /* Apparently the new extent_fragment_update returns an end position
|
|
|
1866 equal to the position passed in if there are no more runs to be
|
|
|
1867 displayed. */
|
|
|
1868 int no_more_frags = 0;
|
|
|
1869
|
|
|
1870 Lisp_Object synch_minibuffers_value =
|
|
|
1871 symbol_value_in_buffer (Qsynchronize_minibuffers, w->buffer);
|
|
|
1872
|
|
|
1873 dl->used_prop_data = 0;
|
|
|
1874 dl->num_chars = 0;
|
|
|
1875
|
|
|
1876 memset (&data, 0, sizeof (data));
|
|
|
1877 data.ef = extent_fragment_new (w->buffer, f);
|
|
|
1878
|
|
|
1879 /* These values are used by all of the rune addition routines. We add
|
|
|
1880 them to this structure for ease of passing. */
|
|
|
1881 data.d = d;
|
|
|
1882 XSETWINDOW (data.window, w);
|
|
|
1883 data.db = db;
|
|
|
1884 data.dl = dl;
|
|
|
1885
|
|
|
1886 data.bi_bufpos = bi_start_pos;
|
|
|
1887 data.pixpos = dl->bounds.left_in;
|
|
|
1888 data.last_charset = Qunbound;
|
|
94
|
1889 data.last_findex = DEFAULT_INDEX;
|
|
0
|
1890 data.result_str = Qnil;
|
|
|
1891
|
|
|
1892 /* Set the right boundary adjusting it to take into account any end
|
|
|
1893 glyph. Save the width of the end glyph for later use. */
|
|
|
1894 data.max_pixpos = dl->bounds.right_in;
|
|
|
1895 if (truncate_win)
|
|
|
1896 end_glyph_width = GLYPH_CACHEL_WIDTH (w, TRUN_GLYPH_INDEX);
|
|
|
1897 else
|
|
|
1898 end_glyph_width = GLYPH_CACHEL_WIDTH (w, CONT_GLYPH_INDEX);
|
|
|
1899 data.max_pixpos -= end_glyph_width;
|
|
|
1900
|
|
|
1901 if (cursor_in_echo_area)
|
|
|
1902 {
|
|
|
1903 if (MINI_WINDOW_P (w) && echo_area_active (f))
|
|
|
1904 {
|
|
|
1905 data.bi_cursor_bufpos = BI_BUF_ZV (b);
|
|
|
1906 data.cursor_type = CURSOR_ON;
|
|
|
1907 }
|
|
|
1908 else
|
|
|
1909 data.cursor_type = NO_CURSOR;
|
|
|
1910 }
|
|
|
1911 else if (MINI_WINDOW_P (w) && !active_minibuffer)
|
|
|
1912 data.cursor_type = NO_CURSOR;
|
|
70
|
1913 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d))))
|
|
0
|
1914 {
|
|
|
1915 data.bi_cursor_bufpos = BI_BUF_PT (b);
|
|
|
1916 data.cursor_type = CURSOR_ON;
|
|
|
1917 }
|
|
|
1918 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f)))
|
|
|
1919 {
|
|
|
1920 data.bi_cursor_bufpos = bi_marker_position (w->pointm[type]);
|
|
|
1921 data.cursor_type = CURSOR_ON;
|
|
|
1922 }
|
|
|
1923 else
|
|
|
1924 data.cursor_type = NO_CURSOR;
|
|
|
1925 data.cursor_x = -1;
|
|
|
1926
|
|
|
1927 data.start_col = w->hscroll;
|
|
|
1928 data.bi_start_col_enabled = (w->hscroll ? bi_start_pos : 0);
|
|
|
1929
|
|
|
1930 /* We regenerate the line from the very beginning. */
|
|
|
1931 Dynarr_reset (db->runes);
|
|
|
1932
|
|
|
1933 /* Why is this less than or equal and not just less than? If the
|
|
|
1934 starting position is already equal to the maximum we can't add
|
|
|
1935 anything else, right? Wrong. We might still have a newline to
|
|
|
1936 add. A newline can use the room allocated for an end glyph since
|
|
|
1937 if we add it we know we aren't going to be adding any end
|
|
|
1938 glyph. */
|
|
|
1939
|
|
|
1940 /* #### Chuck -- I think this condition should be while (1).
|
|
|
1941 Otherwise if (e.g.) there is one begin-glyph and one end-glyph
|
|
|
1942 and the begin-glyph ends exactly at the end of the window, the
|
|
|
1943 end-glyph and text might not be displayed. while (1) ensures
|
|
|
1944 that the loop terminates only when either (a) there is
|
|
|
1945 propagation data or (b) the end-of-line or end-of-buffer is hit.
|
|
|
1946
|
|
|
1947 #### Also I think you need to ensure that the operation
|
|
|
1948 "add begin glyphs; add end glyphs; add text" is atomic and
|
|
|
1949 can't get interrupted in the middle. If you run off the end
|
|
|
1950 of the line during that operation, then you keep accumulating
|
|
|
1951 propagation data until you're done. Otherwise, if the (e.g.)
|
|
|
1952 there's a begin glyph at a particular position and attempting
|
|
|
1953 to display that glyph results in window-end being hit and
|
|
|
1954 propagation data being generated, then the character at that
|
|
|
1955 position won't be displayed.
|
|
|
1956
|
|
|
1957 #### See also the comment after the end of this loop, below.
|
|
|
1958 */
|
|
|
1959 while (data.pixpos <= data.max_pixpos
|
|
|
1960 && (active_minibuffer || !NILP (synch_minibuffers_value)))
|
|
|
1961 {
|
|
|
1962 /* #### This check probably should not be necessary. */
|
|
|
1963 if (data.bi_bufpos > BI_BUF_ZV (b))
|
|
|
1964 {
|
|
|
1965 /* #### urk! More of this lossage! */
|
|
|
1966 data.bi_bufpos--;
|
|
|
1967 goto done;
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 /* If selective display was an integer and we aren't working on
|
|
|
1971 a continuation line then find the next line we are actually
|
|
|
1972 supposed to display. */
|
|
|
1973 if (selective > 0
|
|
|
1974 && (data.bi_bufpos == BI_BUF_BEGV (b)
|
|
|
1975 || BUF_FETCH_CHAR (b, prev_bytind (b, data.bi_bufpos)) == '\n'))
|
|
|
1976 {
|
|
|
1977 while (bi_spaces_at_point (b, data.bi_bufpos) >= selective)
|
|
|
1978 {
|
|
|
1979 data.bi_bufpos =
|
|
|
1980 bi_find_next_newline_no_quit (b, data.bi_bufpos, 1);
|
|
|
1981 if (data.bi_bufpos >= BI_BUF_ZV (b))
|
|
|
1982 {
|
|
|
1983 data.bi_bufpos = BI_BUF_ZV (b);
|
|
|
1984 goto done;
|
|
|
1985 }
|
|
|
1986 }
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 /* Check for face changes. */
|
|
|
1990 if (initial || (!no_more_frags && data.bi_bufpos == data.ef->end))
|
|
|
1991 {
|
|
|
1992 /* Now compute the face and begin/end-glyph information. */
|
|
|
1993 data.findex =
|
|
|
1994 /* Remember that the extent-fragment routines deal in Bytind's. */
|
|
|
1995 extent_fragment_update (w, data.ef, data.bi_bufpos);
|
|
|
1996
|
|
|
1997 if (data.bi_bufpos == data.ef->end)
|
|
|
1998 no_more_frags = 1;
|
|
|
1999
|
|
|
2000 dt = get_display_table (w, data.findex);
|
|
|
2001 }
|
|
|
2002 initial = 0;
|
|
|
2003
|
|
|
2004 /* Determine what is next to be displayed. We first handle any
|
|
|
2005 glyphs returned by glyphs_at_bufpos. If there are no glyphs to
|
|
|
2006 display then we determine what to do based on the character at the
|
|
|
2007 current buffer position. */
|
|
|
2008
|
|
|
2009 /* If the current position is covered by an invisible extent, do
|
|
|
2010 nothing (except maybe add some ellipses).
|
|
|
2011
|
|
|
2012 #### The behavior of begin and end-glyphs at the edge of an
|
|
|
2013 invisible extent should be investigated further. This is
|
|
|
2014 fairly low priority though. */
|
|
|
2015 if (data.ef->invisible)
|
|
|
2016 {
|
|
|
2017 /* #### Chuck, perhaps you could look at this code? I don't
|
|
|
2018 really know what I'm doing. */
|
|
|
2019 if (*prop)
|
|
|
2020 {
|
|
|
2021 Dynarr_free (*prop);
|
|
|
2022 *prop = 0;
|
|
|
2023 }
|
|
|
2024
|
|
|
2025 /* The extent fragment code only sets this when we should
|
|
|
2026 really display the ellipses. It makes sure the ellipses
|
|
|
2027 don't get displayed more than once in a row. */
|
|
|
2028 if (data.ef->invisible_ellipses)
|
|
|
2029 {
|
|
|
2030 struct glyph_block gb;
|
|
|
2031
|
|
|
2032 data.ef->invisible_ellipses_already_displayed = 1;
|
|
|
2033 data.ef->invisible_ellipses = 0;
|
|
|
2034 gb.extent = Qnil;
|
|
|
2035 gb.glyph = Vinvisible_text_glyph;
|
|
|
2036 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0,
|
|
|
2037 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX));
|
|
|
2038 /* Perhaps they shouldn't propagate if the very next thing
|
|
|
2039 is to display a newline (for compatibility with
|
|
|
2040 selective-display-ellipses)? Maybe that's too
|
|
|
2041 abstruse. */
|
|
|
2042 if (*prop)
|
|
|
2043 goto done;
|
|
|
2044 }
|
|
|
2045
|
|
|
2046 /* If point is in an invisible region we place it on the
|
|
|
2047 next visible character. */
|
|
|
2048 if (data.cursor_type == CURSOR_ON
|
|
|
2049 && data.bi_bufpos == data.bi_cursor_bufpos)
|
|
|
2050 {
|
|
|
2051 data.cursor_type = NEXT_CURSOR;
|
|
|
2052 }
|
|
|
2053
|
|
|
2054 /* #### What if we we're dealing with a display table? */
|
|
|
2055 if (data.start_col)
|
|
|
2056 data.start_col--;
|
|
|
2057
|
|
|
2058 if (data.bi_bufpos == BI_BUF_ZV (b))
|
|
|
2059 goto done;
|
|
|
2060 else
|
|
|
2061 INC_BYTIND (b, data.bi_bufpos);
|
|
|
2062 }
|
|
|
2063
|
|
|
2064 /* If there is propagation data, then it represents the current
|
|
|
2065 buffer position being displayed. Add them and advance the
|
|
|
2066 position counter. This might also add the minibuffer
|
|
|
2067 prompt. */
|
|
|
2068 else if (*prop)
|
|
|
2069 {
|
|
|
2070 dl->used_prop_data = 1;
|
|
|
2071 *prop = add_propagation_runes (prop, &data);
|
|
|
2072
|
|
|
2073 if (*prop)
|
|
|
2074 goto done; /* gee, a really narrow window */
|
|
|
2075 else if (data.bi_bufpos == BI_BUF_ZV (b))
|
|
|
2076 goto done;
|
|
|
2077 else if (data.bi_bufpos < BI_BUF_BEGV (b))
|
|
|
2078 /* #### urk urk urk! Aborts are not very fun! Fix this please! */
|
|
|
2079 data.bi_bufpos = BI_BUF_BEGV (b);
|
|
|
2080 else
|
|
|
2081 INC_BYTIND (b, data.bi_bufpos);
|
|
|
2082 }
|
|
|
2083
|
|
|
2084 /* If there are end glyphs, add them to the line. These are
|
|
|
2085 the end glyphs for the previous run of text. We add them
|
|
|
2086 here rather than doing them at the end of handling the
|
|
|
2087 previous run so that glyphs at the beginning and end of
|
|
|
2088 a line are handled correctly. */
|
|
|
2089 else if (Dynarr_length (data.ef->end_glyphs) > 0)
|
|
|
2090 {
|
|
|
2091 *prop = add_glyph_runes (&data, END_GLYPHS);
|
|
|
2092 if (*prop)
|
|
|
2093 goto done;
|
|
|
2094 }
|
|
|
2095
|
|
|
2096 /* If there are begin glyphs, add them to the line. */
|
|
|
2097 else if (Dynarr_length (data.ef->begin_glyphs) > 0)
|
|
|
2098 {
|
|
|
2099 *prop = add_glyph_runes (&data, BEGIN_GLYPHS);
|
|
|
2100 if (*prop)
|
|
|
2101 goto done;
|
|
|
2102 }
|
|
|
2103
|
|
|
2104 /* If at end-of-buffer, we've already processed begin and
|
|
|
2105 end-glyphs at this point and there's no text to process,
|
|
|
2106 so we're done. */
|
|
|
2107 else if (data.bi_bufpos == BI_BUF_ZV (b))
|
|
|
2108 goto done;
|
|
|
2109
|
|
|
2110 else
|
|
|
2111 {
|
|
|
2112 /* Get the character at the current buffer position. */
|
|
|
2113 data.ch = BI_BUF_FETCH_CHAR (b, data.bi_bufpos);
|
|
|
2114
|
|
|
2115 /* If there is a display table entry for it, hand it off to
|
|
|
2116 add_disp_table_entry_runes and let it worry about it. */
|
|
|
2117 if (dt && !NILP (DISP_CHAR_ENTRY (dt, data.ch)))
|
|
|
2118 {
|
|
|
2119 *prop =
|
|
|
2120 add_disp_table_entry_runes (&data,
|
|
|
2121 DISP_CHAR_ENTRY (dt, data.ch));
|
|
|
2122
|
|
|
2123 if (*prop)
|
|
|
2124 goto done;
|
|
|
2125 }
|
|
|
2126
|
|
|
2127 /* Check if we have hit a newline character. If so, add a marker
|
|
|
2128 to the line and end this loop. */
|
|
|
2129 else if (data.ch == '\n')
|
|
|
2130 {
|
|
|
2131 /* We aren't going to be adding an end glyph so give its
|
|
|
2132 space back in order to make sure that the cursor can
|
|
|
2133 fit. */
|
|
|
2134 data.max_pixpos += end_glyph_width;
|
|
|
2135
|
|
|
2136 if (selective > 0
|
|
|
2137 && (bi_spaces_at_point
|
|
|
2138 (b, next_bytind (b, data.bi_bufpos))
|
|
|
2139 >= selective))
|
|
|
2140 {
|
|
|
2141 if (!NILP (b->selective_display_ellipses))
|
|
|
2142 {
|
|
|
2143 struct glyph_block gb;
|
|
|
2144
|
|
|
2145 gb.extent = Qnil;
|
|
|
2146 gb.glyph = Vinvisible_text_glyph;
|
|
|
2147 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0,
|
|
|
2148 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX));
|
|
|
2149 }
|
|
|
2150 else
|
|
|
2151 {
|
|
|
2152 /* Cheesy, cheesy, cheesy. We mark the end of the
|
|
|
2153 line with a special "character rune" whose width
|
|
|
2154 is the EOL cursor width and whose character is
|
|
|
2155 the non-printing character '\n'. */
|
|
|
2156 data.blank_width = DEVMETH (d, eol_cursor_width, ());
|
|
|
2157 *prop = add_emchar_rune (&data);
|
|
|
2158 }
|
|
|
2159
|
|
|
2160 /* We need to set data.bi_bufpos to the start of the
|
|
|
2161 next visible region in order to make this line
|
|
|
2162 appear to contain all of the invisible area.
|
|
|
2163 Otherwise, the line cache won't work
|
|
|
2164 correctly. */
|
|
|
2165 INC_BYTIND (b, data.bi_bufpos);
|
|
|
2166 while (bi_spaces_at_point (b, data.bi_bufpos) >= selective)
|
|
|
2167 {
|
|
|
2168 data.bi_bufpos =
|
|
|
2169 bi_find_next_newline_no_quit (b, data.bi_bufpos, 1);
|
|
|
2170 if (data.bi_bufpos >= BI_BUF_ZV (b))
|
|
|
2171 {
|
|
|
2172 data.bi_bufpos = BI_BUF_ZV (b);
|
|
|
2173 break;
|
|
|
2174 }
|
|
|
2175 }
|
|
|
2176 if (BI_BUF_FETCH_CHAR
|
|
|
2177 (b, prev_bytind (b, data.bi_bufpos)) == '\n')
|
|
|
2178 DEC_BYTIND (b, data.bi_bufpos);
|
|
|
2179 }
|
|
|
2180 else
|
|
|
2181 {
|
|
|
2182 data.blank_width = DEVMETH (d, eol_cursor_width, ());
|
|
|
2183 *prop = add_emchar_rune (&data);
|
|
|
2184 }
|
|
|
2185
|
|
|
2186 goto done;
|
|
|
2187 }
|
|
|
2188
|
|
|
2189 /* If the current character is ^M, and selective display is
|
|
|
2190 enabled, then add the invisible-text-glyph if
|
|
|
2191 selective-display-ellipses is set. In any case, this
|
|
|
2192 line is done. */
|
|
|
2193 else if (data.ch == (('M' & 037)) && selective == -1)
|
|
|
2194 {
|
|
|
2195 Bytind bi_next_bufpos;
|
|
|
2196
|
|
|
2197 /* Find the buffer position at the end of the line. */
|
|
|
2198 bi_next_bufpos =
|
|
|
2199 bi_find_next_newline_no_quit (b, data.bi_bufpos, 1);
|
|
|
2200 if (BI_BUF_FETCH_CHAR (b, prev_bytind (b, bi_next_bufpos))
|
|
|
2201 == '\n')
|
|
|
2202 DEC_BYTIND (b, bi_next_bufpos);
|
|
|
2203
|
|
|
2204 /* If the cursor is somewhere in the elided text make
|
|
|
2205 sure that the cursor gets drawn appropriately. */
|
|
|
2206 if (data.cursor_type == CURSOR_ON
|
|
|
2207 && (data.bi_cursor_bufpos >= data.bi_bufpos &&
|
|
|
2208 data.bi_cursor_bufpos < bi_next_bufpos))
|
|
|
2209 {
|
|
|
2210 data.cursor_type = NEXT_CURSOR;
|
|
|
2211 }
|
|
|
2212
|
|
|
2213 /* We won't be adding a truncation or continuation glyph
|
|
|
2214 so give up the room allocated for them. */
|
|
|
2215 data.max_pixpos += end_glyph_width;
|
|
|
2216
|
|
|
2217 if (!NILP (b->selective_display_ellipses))
|
|
|
2218 {
|
|
|
2219 /* We don't propagate anything from the invisible
|
|
|
2220 text glyph if it fails to fit. This is
|
|
|
2221 intentional. */
|
|
|
2222 struct glyph_block gb;
|
|
|
2223
|
|
|
2224 gb.extent = Qnil;
|
|
|
2225 gb.glyph = Vinvisible_text_glyph;
|
|
|
2226 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 1,
|
|
|
2227 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX));
|
|
|
2228 }
|
|
|
2229
|
|
|
2230 /* Set the buffer position to the end of the line. We
|
|
|
2231 need to do this before potentially adding a newline
|
|
|
2232 so that the cursor flag will get set correctly (if
|
|
|
2233 needed). */
|
|
|
2234 data.bi_bufpos = bi_next_bufpos;
|
|
|
2235
|
|
|
2236 if (NILP (b->selective_display_ellipses)
|
|
|
2237 || data.bi_cursor_bufpos == bi_next_bufpos)
|
|
|
2238 {
|
|
|
2239 /* We have to at least add a newline character so
|
|
|
2240 that the cursor shows up properly. */
|
|
|
2241 data.ch = '\n';
|
|
|
2242 data.blank_width = DEVMETH (d, eol_cursor_width, ());
|
|
|
2243 data.findex = DEFAULT_INDEX;
|
|
|
2244 data.start_col = 0;
|
|
|
2245 data.bi_start_col_enabled = 0;
|
|
|
2246
|
|
|
2247 add_emchar_rune (&data);
|
|
|
2248 }
|
|
|
2249
|
|
|
2250 /* This had better be a newline but doing it this way
|
|
|
2251 we'll see obvious incorrect results if it isn't. No
|
|
|
2252 need to abort here. */
|
|
|
2253 data.ch = BI_BUF_FETCH_CHAR (b, data.bi_bufpos);
|
|
|
2254
|
|
|
2255 goto done;
|
|
|
2256 }
|
|
|
2257
|
|
|
2258 /* If the current character is considered to be printable, then
|
|
|
2259 just add it. */
|
|
|
2260 else if (data.ch >= printable_min)
|
|
|
2261 {
|
|
|
2262 *prop = add_emchar_rune (&data);
|
|
|
2263 if (*prop)
|
|
|
2264 goto done;
|
|
|
2265 }
|
|
|
2266
|
|
|
2267 /* If the current character is a tab, determine the next tab
|
|
|
2268 starting position and add a blank rune which extends from the
|
|
|
2269 current pixel position to that starting position. */
|
|
|
2270 else if (data.ch == '\t')
|
|
|
2271 {
|
|
|
2272 int tab_start_pixpos = data.pixpos;
|
|
|
2273 int next_tab_start;
|
|
|
2274 int char_tab_width;
|
|
|
2275 int prop_width = 0;
|
|
|
2276
|
|
|
2277 if (data.start_col > 1)
|
|
|
2278 tab_start_pixpos -= (space_width (w) * (data.start_col - 1));
|
|
|
2279
|
|
|
2280 next_tab_start = next_tab_position (w, tab_start_pixpos,
|
|
|
2281 dl->bounds.left_in);
|
|
|
2282 if (next_tab_start > data.max_pixpos)
|
|
|
2283 {
|
|
|
2284 prop_width = next_tab_start - data.max_pixpos;
|
|
|
2285 next_tab_start = data.max_pixpos;
|
|
|
2286 }
|
|
|
2287 data.blank_width = next_tab_start - data.pixpos;
|
|
|
2288 char_tab_width =
|
|
|
2289 (next_tab_start - tab_start_pixpos) / space_width (w);
|
|
|
2290
|
|
|
2291 *prop = add_blank_rune (&data, w, char_tab_width);
|
|
|
2292
|
|
|
2293 /* add_blank_rune is only supposed to be called with
|
|
|
2294 sizes guaranteed to fit in the available space. */
|
|
|
2295 assert (!(*prop));
|
|
|
2296
|
|
|
2297 if (prop_width)
|
|
|
2298 {
|
|
|
2299 struct prop_block pb;
|
|
|
2300 *prop = Dynarr_new (struct prop_block);
|
|
|
2301
|
|
|
2302 pb.type = PROP_BLANK;
|
|
|
2303 pb.data.p_blank.width = prop_width;
|
|
|
2304 pb.data.p_blank.findex = data.findex;
|
|
|
2305 Dynarr_add (*prop, pb);
|
|
|
2306
|
|
|
2307 goto done;
|
|
|
2308 }
|
|
|
2309 }
|
|
|
2310
|
|
|
2311 /* If character is a control character, pass it off to
|
|
|
2312 add_control_char_runes.
|
|
|
2313
|
|
|
2314 The is_*() routines have undefined results on
|
|
|
2315 arguments outside of the range [-1, 255]. (This
|
|
|
2316 often bites people who carelessly use `char' instead
|
|
|
2317 of `unsigned char'.)
|
|
|
2318 */
|
|
|
2319 else if (data.ch < 0x100 && iscntrl ((Bufbyte) data.ch))
|
|
|
2320 {
|
|
|
2321 *prop = add_control_char_runes (&data, b);
|
|
|
2322
|
|
|
2323 if (*prop)
|
|
|
2324 goto done;
|
|
|
2325 }
|
|
|
2326
|
|
|
2327 /* If the character is above the ASCII range and we have not
|
|
|
2328 already handled it, then print it as an octal number. */
|
|
|
2329 else if (data.ch >= 0200)
|
|
|
2330 {
|
|
|
2331 *prop = add_octal_runes (&data);
|
|
|
2332
|
|
|
2333 if (*prop)
|
|
|
2334 goto done;
|
|
|
2335 }
|
|
|
2336
|
|
|
2337 /* Assume the current character is considered to be printable,
|
|
|
2338 then just add it. */
|
|
|
2339 else
|
|
|
2340 {
|
|
|
2341 *prop = add_emchar_rune (&data);
|
|
|
2342 if (*prop)
|
|
|
2343 goto done;
|
|
|
2344 }
|
|
|
2345
|
|
|
2346 INC_BYTIND (b, data.bi_bufpos);
|
|
|
2347 }
|
|
|
2348 }
|
|
|
2349
|
|
|
2350 done:
|
|
|
2351
|
|
|
2352 /* Determine the starting point of the next line if we did not hit the
|
|
|
2353 end of the buffer. */
|
|
|
2354 if (data.bi_bufpos < BI_BUF_ZV (b)
|
|
|
2355 && (active_minibuffer || !NILP (synch_minibuffers_value)))
|
|
|
2356 {
|
|
|
2357 /* #### This check is not correct. If the line terminated
|
|
|
2358 due to a begin-glyph or end-glyph hitting window-end, then
|
|
|
2359 data.ch will not point to the character at data.bi_bufpos. If
|
|
|
2360 you make the two changes mentioned at the top of this loop,
|
|
|
2361 you should be able to say '(if (*prop))'. That should also
|
|
|
2362 make it possible to eliminate the data.bi_bufpos < BI_BUF_ZV (b)
|
|
|
2363 check. */
|
|
|
2364
|
|
|
2365 /* The common case is that the line ended because we hit a newline.
|
|
|
2366 In that case, the next character is just the next buffer
|
|
|
2367 position. */
|
|
|
2368 if (data.ch == '\n')
|
|
|
2369 {
|
|
|
2370 /* If data.start_col_enabled is still true, then the window is
|
|
|
2371 scrolled far enough so that nothing on this line is visible.
|
|
|
2372 We need to stick a trunctation glyph at the beginning of the
|
|
|
2373 line in that case unless the line is completely blank. */
|
|
|
2374 if (data.bi_start_col_enabled)
|
|
|
2375 {
|
|
|
2376 if (data.cursor_type == CURSOR_ON)
|
|
|
2377 {
|
|
|
2378 if (data.bi_cursor_bufpos >= bi_start_pos
|
|
|
2379 && data.bi_cursor_bufpos <= data.bi_bufpos)
|
|
|
2380 data.bi_cursor_bufpos = data.bi_bufpos;
|
|
|
2381 }
|
|
|
2382 data.findex = DEFAULT_INDEX;
|
|
|
2383 data.start_col = 0;
|
|
|
2384 data.bi_start_col_enabled = 0;
|
|
|
2385
|
|
|
2386 if (data.bi_bufpos != bi_start_pos)
|
|
|
2387 {
|
|
|
2388 struct glyph_block gb;
|
|
|
2389
|
|
|
2390 gb.extent = Qnil;
|
|
|
2391 gb.glyph = Vhscroll_glyph;
|
|
|
2392 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0,
|
|
|
2393 GLYPH_CACHEL (w, HSCROLL_GLYPH_INDEX));
|
|
|
2394 }
|
|
|
2395 else
|
|
|
2396 {
|
|
|
2397 /* This duplicates code down below to add a newline to
|
|
|
2398 the end of an otherwise empty line.*/
|
|
|
2399 data.ch = '\n';
|
|
|
2400 data.blank_width = DEVMETH (d, eol_cursor_width, ());
|
|
|
2401
|
|
|
2402 add_emchar_rune (&data);
|
|
|
2403 }
|
|
|
2404 }
|
|
|
2405
|
|
|
2406 INC_BYTIND (b, data.bi_bufpos);
|
|
|
2407 }
|
|
|
2408
|
|
|
2409 /* Otherwise we have a buffer line which cannot fit on one display
|
|
|
2410 line. */
|
|
|
2411 else
|
|
|
2412 {
|
|
|
2413 struct glyph_block gb;
|
|
|
2414 struct glyph_cachel *cachel;
|
|
|
2415
|
|
|
2416 /* If the line is to be truncated then we actually have to look
|
|
|
2417 for the next newline. We also add the end-of-line glyph which
|
|
|
2418 we know will fit because we adjusted the right border before
|
|
|
2419 we starting laying out the line. */
|
|
|
2420 data.max_pixpos += end_glyph_width;
|
|
|
2421 data.findex = DEFAULT_INDEX;
|
|
|
2422 gb.extent = Qnil;
|
|
|
2423
|
|
|
2424 if (truncate_win)
|
|
|
2425 {
|
|
|
2426 Bytind bi_pos;
|
|
|
2427
|
|
|
2428 /* Now find the start of the next line. */
|
|
|
2429 bi_pos = bi_find_next_newline_no_quit (b, data.bi_bufpos, 1);
|
|
|
2430
|
|
|
2431 /* If the cursor is past the truncation line then we
|
|
|
2432 make it appear on the truncation glyph. If we've hit
|
|
|
2433 the end of the buffer then we also make the cursor
|
|
110
|
2434 appear unless eob is immediately preceded by a
|
|
0
|
2435 newline. In that case the cursor should actually
|
|
|
2436 appear on the next line. */
|
|
|
2437 if (data.cursor_type == CURSOR_ON
|
|
|
2438 && data.bi_cursor_bufpos >= data.bi_bufpos
|
|
|
2439 && (data.bi_cursor_bufpos < bi_pos ||
|
|
|
2440 (bi_pos == BI_BUF_ZV (b)
|
|
|
2441 && (bi_pos == BI_BUF_BEGV (b)
|
|
|
2442 || (BI_BUF_FETCH_CHAR (b, prev_bytind (b, bi_pos))
|
|
|
2443 != '\n')))))
|
|
|
2444 data.bi_cursor_bufpos = bi_pos;
|
|
|
2445 else
|
|
|
2446 data.cursor_type = NO_CURSOR;
|
|
|
2447
|
|
|
2448 data.bi_bufpos = bi_pos;
|
|
|
2449 gb.glyph = Vtruncation_glyph;
|
|
|
2450 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX);
|
|
|
2451 }
|
|
|
2452 else
|
|
|
2453 {
|
|
|
2454 /* The cursor can never be on the continuation glyph. */
|
|
|
2455 data.cursor_type = NO_CURSOR;
|
|
|
2456
|
|
|
2457 /* data.bi_bufpos is already at the start of the next line. */
|
|
|
2458
|
|
|
2459 gb.glyph = Vcontinuation_glyph;
|
|
|
2460 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX);
|
|
|
2461 }
|
|
|
2462
|
|
|
2463 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 1, cachel);
|
|
|
2464
|
|
|
2465 if (truncate_win && data.bi_bufpos == BI_BUF_ZV (b)
|
|
|
2466 && BI_BUF_FETCH_CHAR (b, prev_bytind (b, BI_BUF_ZV (b))) != '\n')
|
|
|
2467 /* #### Damn this losing shit. */
|
|
|
2468 data.bi_bufpos++;
|
|
|
2469 }
|
|
|
2470 }
|
|
|
2471 else if ((active_minibuffer || !NILP (synch_minibuffers_value))
|
|
|
2472 && (!echo_area_active (f) || data.bi_bufpos == BI_BUF_ZV (b)))
|
|
|
2473 {
|
|
|
2474 /* We need to add a marker to the end of the line since there is no
|
|
|
2475 newline character in order for the cursor to get drawn. We label
|
|
|
2476 it as a newline so that it gets handled correctly by the
|
|
|
2477 whitespace routines below. */
|
|
|
2478
|
|
|
2479 data.ch = '\n';
|
|
|
2480 data.blank_width = DEVMETH (d, eol_cursor_width, ());
|
|
|
2481 data.findex = DEFAULT_INDEX;
|
|
|
2482 data.start_col = 0;
|
|
|
2483 data.bi_start_col_enabled = 0;
|
|
|
2484
|
|
|
2485 data.max_pixpos += data.blank_width;
|
|
|
2486 add_emchar_rune (&data);
|
|
|
2487 data.max_pixpos -= data.blank_width;
|
|
|
2488
|
|
|
2489 /* #### urk! Chuck, this shit is bad news. Going around
|
|
|
2490 manipulating invalid positions is guaranteed to result in
|
|
|
2491 trouble sooner or later. */
|
|
|
2492 data.bi_bufpos = BI_BUF_ZV (b) + 1;
|
|
|
2493 }
|
|
|
2494
|
|
|
2495 /* Calculate left whitespace boundary. */
|
|
|
2496 {
|
|
|
2497 int elt = 0;
|
|
|
2498
|
|
|
2499 /* Whitespace past a newline is considered right whitespace. */
|
|
|
2500 while (elt < Dynarr_length (db->runes))
|
|
|
2501 {
|
|
|
2502 struct rune *rb = Dynarr_atp (db->runes, elt);
|
|
|
2503
|
|
|
2504 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ')
|
|
|
2505 || rb->type == RUNE_BLANK)
|
|
|
2506 {
|
|
|
2507 dl->bounds.left_white += rb->width;
|
|
|
2508 elt++;
|
|
|
2509 }
|
|
|
2510 else
|
|
|
2511 elt = Dynarr_length (db->runes);
|
|
|
2512 }
|
|
|
2513 }
|
|
|
2514
|
|
|
2515 /* Calculate right whitespace boundary. */
|
|
|
2516 {
|
|
|
2517 int elt = Dynarr_length (db->runes) - 1;
|
|
|
2518 int done = 0;
|
|
|
2519
|
|
|
2520 while (!done && elt >= 0)
|
|
|
2521 {
|
|
|
2522 struct rune *rb = Dynarr_atp (db->runes, elt);
|
|
|
2523
|
|
|
2524 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100
|
|
|
2525 && isspace (rb->object.chr.ch))
|
|
|
2526 && !rb->type == RUNE_BLANK)
|
|
|
2527 {
|
|
|
2528 dl->bounds.right_white = rb->xpos + rb->width;
|
|
|
2529 done = 1;
|
|
|
2530 }
|
|
|
2531
|
|
|
2532 elt--;
|
|
|
2533
|
|
|
2534 }
|
|
|
2535
|
|
|
2536 /* The line is blank so everything is considered to be right
|
|
|
2537 whitespace. */
|
|
|
2538 if (!done)
|
|
|
2539 dl->bounds.right_white = dl->bounds.left_in;
|
|
|
2540 }
|
|
|
2541
|
|
|
2542 /* Set the display blocks bounds. */
|
|
|
2543 db->start_pos = dl->bounds.left_in;
|
|
|
2544 if (Dynarr_length (db->runes))
|
|
|
2545 {
|
|
|
2546 struct rune *rb = Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1);
|
|
|
2547
|
|
|
2548 db->end_pos = rb->xpos + rb->width;
|
|
|
2549 }
|
|
|
2550 else
|
|
|
2551 db->end_pos = dl->bounds.right_white;
|
|
|
2552
|
|
|
2553 /* update line height parameters */
|
|
|
2554 if (!data.new_ascent && !data.new_descent)
|
|
|
2555 {
|
|
|
2556 /* We've got a blank line so initialize these values from the default
|
|
|
2557 face. */
|
|
|
2558 default_face_font_info (data.window, &data.new_ascent,
|
|
|
2559 &data.new_descent, 0, 0, 0);
|
|
|
2560 }
|
|
|
2561
|
|
|
2562 if (data.max_pixmap_height)
|
|
|
2563 {
|
|
|
2564 int height = data.new_ascent + data.new_descent;
|
|
|
2565 int pix_ascent, pix_descent;
|
|
|
2566
|
|
|
2567 pix_descent = data.max_pixmap_height * data.new_descent / height;
|
|
|
2568 pix_ascent = data.max_pixmap_height - pix_descent;
|
|
|
2569
|
|
|
2570 data.new_ascent = max (data.new_ascent, pix_ascent);
|
|
|
2571 data.new_descent = max (data.new_descent, pix_descent);
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 dl->ascent = data.new_ascent;
|
|
|
2575 dl->descent = data.new_descent;
|
|
|
2576
|
|
|
2577 {
|
|
|
2578 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent);
|
|
|
2579
|
|
|
2580 if (dl->ascent < ascent)
|
|
|
2581 dl->ascent = ascent;
|
|
|
2582 }
|
|
|
2583 {
|
|
|
2584 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent);
|
|
|
2585
|
|
|
2586 if (dl->descent < descent)
|
|
|
2587 dl->descent = descent;
|
|
|
2588 }
|
|
|
2589
|
|
|
2590 dl->cursor_elt = data.cursor_x;
|
|
|
2591 /* #### lossage lossage lossage! Fix this shit! */
|
|
|
2592 if (data.bi_bufpos > BI_BUF_ZV (b))
|
|
|
2593 dl->end_bufpos = BUF_ZV (b);
|
|
|
2594 else
|
|
|
2595 dl->end_bufpos = bytind_to_bufpos (b, data.bi_bufpos) - 1;
|
|
|
2596 if (truncate_win)
|
|
|
2597 data.dl->num_chars = column_at_point (b, dl->end_bufpos, 0);
|
|
|
2598 else
|
|
|
2599 /* This doesn't correctly take into account tabs and control
|
|
|
2600 characters but if the window isn't being truncated then this
|
|
|
2601 value isn't going to end up being used anyhow. */
|
|
|
2602 data.dl->num_chars = dl->end_bufpos - dl->bufpos;
|
|
|
2603
|
|
|
2604 /* #### handle horizontally scrolled line with text none of which
|
|
|
2605 was actually laid out. */
|
|
|
2606
|
|
|
2607 /* #### handle any remainder of overlay arrow */
|
|
|
2608
|
|
|
2609 if (*prop == ADD_FAILED)
|
|
|
2610 *prop = NULL;
|
|
|
2611
|
|
|
2612 if (truncate_win && *prop)
|
|
|
2613 {
|
|
|
2614 Dynarr_free (*prop);
|
|
|
2615 *prop = NULL;
|
|
|
2616 }
|
|
|
2617
|
|
|
2618 extent_fragment_delete (data.ef);
|
|
|
2619
|
|
|
2620 /* #### If we started at EOB, then make sure we return a value past
|
|
|
2621 it so that regenerate_window will exit properly. This is bogus.
|
|
|
2622 The main loop should get fixed so that it isn't necessary to call
|
|
|
2623 this function if we are already at EOB. */
|
|
|
2624
|
|
|
2625 if (data.bi_bufpos == BI_BUF_ZV (b) && bi_start_pos == BI_BUF_ZV (b))
|
|
|
2626 return (data.bi_bufpos + 1); /* Yuck! */
|
|
|
2627 else
|
|
|
2628 return data.bi_bufpos;
|
|
|
2629 }
|
|
|
2630
|
|
|
2631 /* Display the overlay arrow at the beginning of the given line. */
|
|
|
2632
|
|
|
2633 static int
|
|
|
2634 create_overlay_glyph_block (struct window *w, struct display_line *dl)
|
|
|
2635 {
|
|
|
2636 struct frame *f = XFRAME (w->frame);
|
|
|
2637 struct device *d = XDEVICE (f->device);
|
|
|
2638 pos_data data;
|
|
|
2639
|
|
|
2640 /* If Voverlay_arrow_string isn't valid then just fail silently. */
|
|
|
2641 if (!STRINGP (Voverlay_arrow_string) && !GLYPHP (Voverlay_arrow_string))
|
|
|
2642 return 0;
|
|
|
2643
|
|
|
2644 memset (&data, 0, sizeof (data));
|
|
|
2645 data.ef = NULL;
|
|
|
2646 data.d = d;
|
|
|
2647 XSETWINDOW (data.window, w);
|
|
|
2648 data.db = get_display_block_from_line (dl, OVERWRITE);
|
|
|
2649 data.dl = dl;
|
|
|
2650 data.pixpos = dl->bounds.left_in;
|
|
|
2651 data.max_pixpos = dl->bounds.right_in;
|
|
|
2652 data.cursor_type = NO_CURSOR;
|
|
|
2653 data.cursor_x = -1;
|
|
|
2654 data.findex = DEFAULT_INDEX;
|
|
|
2655 data.last_charset = Qunbound;
|
|
94
|
2656 data.last_findex = DEFAULT_INDEX;
|
|
0
|
2657 data.result_str = Qnil;
|
|
|
2658
|
|
|
2659 Dynarr_reset (data.db->runes);
|
|
|
2660
|
|
|
2661 if (STRINGP (Voverlay_arrow_string))
|
|
|
2662 {
|
|
|
2663 add_bufbyte_string_runes
|
|
|
2664 (&data,
|
|
16
|
2665 XSTRING_DATA (Voverlay_arrow_string),
|
|
|
2666 XSTRING_LENGTH (Voverlay_arrow_string),
|
|
0
|
2667 1);
|
|
|
2668 }
|
|
|
2669 else if (GLYPHP (Voverlay_arrow_string))
|
|
|
2670 {
|
|
|
2671 struct glyph_block gb;
|
|
|
2672
|
|
|
2673 gb.glyph = Voverlay_arrow_string;
|
|
|
2674 gb.extent = Qnil;
|
|
|
2675 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, 0);
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 if (data.max_pixmap_height)
|
|
|
2679 {
|
|
|
2680 int height = data.new_ascent + data.new_descent;
|
|
|
2681 int pix_ascent, pix_descent;
|
|
|
2682
|
|
|
2683 pix_descent = data.max_pixmap_height * data.new_descent / height;
|
|
|
2684 pix_ascent = data.max_pixmap_height - pix_descent;
|
|
|
2685
|
|
|
2686 data.new_ascent = max (data.new_ascent, pix_ascent);
|
|
|
2687 data.new_descent = max (data.new_descent, pix_descent);
|
|
|
2688 }
|
|
|
2689
|
|
|
2690 dl->ascent = data.new_ascent;
|
|
|
2691 dl->descent = data.new_descent;
|
|
|
2692
|
|
|
2693 data.db->start_pos = dl->bounds.left_in;
|
|
|
2694 data.db->end_pos = data.pixpos;
|
|
|
2695
|
|
|
2696 return (data.pixpos - dl->bounds.left_in);
|
|
|
2697 }
|
|
|
2698
|
|
|
2699 /* Add a type of glyph to a margin display block. */
|
|
|
2700
|
|
|
2701 static int
|
|
|
2702 add_margin_runes (struct display_line *dl, struct display_block *db, int start,
|
|
|
2703 int count, int glyph_type, int side, Lisp_Object window)
|
|
|
2704 {
|
|
|
2705 glyph_block_dynarr *gbd = (side == LEFT_GLYPHS
|
|
|
2706 ? dl->left_glyphs
|
|
|
2707 : dl->right_glyphs);
|
|
|
2708 int elt, end;
|
|
|
2709 int xpos = start;
|
|
|
2710 int reverse;
|
|
|
2711
|
|
|
2712 if ((glyph_type == GL_WHITESPACE && side == LEFT_GLYPHS)
|
|
|
2713 || (glyph_type == GL_INSIDE_MARGIN && side == RIGHT_GLYPHS))
|
|
|
2714 {
|
|
|
2715 reverse = 1;
|
|
|
2716 elt = Dynarr_length (gbd) - 1;
|
|
|
2717 end = 0;
|
|
|
2718 }
|
|
|
2719 else
|
|
|
2720 {
|
|
|
2721 reverse = 0;
|
|
|
2722 elt = 0;
|
|
|
2723 end = Dynarr_length (gbd);
|
|
|
2724 }
|
|
|
2725
|
|
|
2726 while (count && ((!reverse && elt < end) || (reverse && elt >= end)))
|
|
|
2727 {
|
|
|
2728 struct glyph_block *gb = Dynarr_atp (gbd, elt);
|
|
|
2729
|
|
|
2730 if (NILP (gb->extent))
|
|
|
2731 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
2732
|
|
|
2733 if (gb->active &&
|
|
|
2734 ((side == LEFT_GLYPHS &&
|
|
|
2735 extent_begin_glyph_layout (XEXTENT (gb->extent)) == glyph_type)
|
|
|
2736 || (side == RIGHT_GLYPHS &&
|
|
|
2737 extent_end_glyph_layout (XEXTENT (gb->extent)) == glyph_type)))
|
|
|
2738 {
|
|
|
2739 struct rune rb;
|
|
|
2740
|
|
|
2741 rb.width = gb->width;
|
|
|
2742 rb.findex = gb->findex;
|
|
|
2743 rb.xpos = xpos;
|
|
|
2744 rb.bufpos = -1;
|
|
|
2745 rb.endpos = 0;
|
|
|
2746 rb.type = RUNE_DGLYPH;
|
|
|
2747 rb.object.dglyph.glyph = gb->glyph;
|
|
|
2748 rb.object.dglyph.extent = gb->extent;
|
|
|
2749 rb.object.dglyph.xoffset = 0;
|
|
|
2750 rb.cursor_type = CURSOR_OFF;
|
|
|
2751
|
|
|
2752 Dynarr_add (db->runes, rb);
|
|
|
2753 xpos += rb.width;
|
|
|
2754 count--;
|
|
|
2755 gb->active = 0;
|
|
|
2756
|
|
|
2757 if (glyph_contrib_p (gb->glyph, window))
|
|
|
2758 {
|
|
|
2759 unsigned short ascent, descent;
|
|
|
2760 Lisp_Object baseline = glyph_baseline (gb->glyph, window);
|
|
|
2761
|
|
|
2762 ascent = glyph_ascent (gb->glyph, Qnil, gb->findex, window);
|
|
|
2763 descent = glyph_descent (gb->glyph, Qnil, gb->findex, window);
|
|
|
2764
|
|
|
2765 /* A pixmap that has not had a baseline explicitly set.
|
|
|
2766 We use the existing ascent / descent ratio of the
|
|
|
2767 line. */
|
|
|
2768 if (NILP (baseline))
|
|
|
2769 {
|
|
|
2770 int gheight = ascent + descent;
|
|
|
2771 int line_height = dl->ascent + dl->descent;
|
|
|
2772 int pix_ascent, pix_descent;
|
|
|
2773
|
|
|
2774 pix_descent = (int) (gheight * dl->descent) / line_height;
|
|
|
2775 pix_ascent = gheight - pix_descent;
|
|
|
2776
|
|
|
2777 dl->ascent = max ((int) dl->ascent, pix_ascent);
|
|
|
2778 dl->descent = max ((int) dl->descent, pix_descent);
|
|
|
2779 }
|
|
|
2780
|
|
|
2781 /* A string so determine contribution normally. */
|
|
|
2782 else if (EQ (baseline, Qt))
|
|
|
2783 {
|
|
|
2784 dl->ascent = max (dl->ascent, ascent);
|
|
|
2785 dl->descent = max (dl->descent, descent);
|
|
|
2786 }
|
|
|
2787
|
|
|
2788 /* A pixmap with an explicitly set baseline. We determine the
|
|
|
2789 contribution here. */
|
|
|
2790 else if (INTP (baseline))
|
|
|
2791 {
|
|
|
2792 int height = ascent + descent;
|
|
|
2793 int pix_ascent, pix_descent;
|
|
|
2794
|
|
|
2795 pix_ascent = height * XINT (baseline) / 100;
|
|
|
2796 pix_descent = height - pix_ascent;
|
|
|
2797
|
|
|
2798 dl->ascent = max ((int) dl->ascent, pix_ascent);
|
|
|
2799 dl->descent = max ((int) dl->descent, pix_descent);
|
|
|
2800 }
|
|
|
2801
|
|
|
2802 /* Otherwise something is screwed up. */
|
|
|
2803 else
|
|
|
2804 abort ();
|
|
|
2805 }
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 (reverse ? elt-- : elt++);
|
|
|
2809 }
|
|
|
2810
|
|
|
2811 return xpos;
|
|
|
2812 }
|
|
|
2813
|
|
|
2814 /* Add a blank to a margin display block. */
|
|
|
2815
|
|
|
2816 static void
|
|
|
2817 add_margin_blank (struct display_line *dl, struct display_block *db,
|
|
|
2818 struct window *w, int xpos, int width, int side)
|
|
|
2819 {
|
|
|
2820 struct rune rb;
|
|
|
2821
|
|
|
2822 rb.findex = (side == LEFT_GLYPHS
|
|
|
2823 ? get_builtin_face_cache_index (w, Vleft_margin_face)
|
|
|
2824 : get_builtin_face_cache_index (w, Vright_margin_face));
|
|
|
2825 rb.xpos = xpos;
|
|
|
2826 rb.width = width;
|
|
|
2827 rb.bufpos = -1;
|
|
|
2828 rb.endpos = 0;
|
|
|
2829 rb.type = RUNE_BLANK;
|
|
|
2830 rb.cursor_type = CURSOR_OFF;
|
|
|
2831
|
|
|
2832 Dynarr_add (db->runes, rb);
|
|
|
2833 }
|
|
|
2834
|
|
|
2835 /* Display glyphs in the left outside margin, left inside margin and
|
|
|
2836 left whitespace area. */
|
|
|
2837
|
|
|
2838 static void
|
|
|
2839 create_left_glyph_block (struct window *w, struct display_line *dl,
|
|
|
2840 int overlay_width)
|
|
|
2841 {
|
|
|
2842 Lisp_Object window;
|
|
|
2843
|
|
|
2844 int use_overflow = (NILP (w->use_left_overflow) ? 0 : 1);
|
|
|
2845 int elt, end_xpos;
|
|
|
2846 int out_end, in_out_start, in_in_end, white_out_start, white_in_start;
|
|
|
2847 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt;
|
|
|
2848 int left_in_start = dl->bounds.left_in;
|
|
|
2849 int left_in_end = dl->bounds.left_in + overlay_width;
|
|
|
2850
|
|
|
2851 struct display_block *odb, *idb;
|
|
|
2852
|
|
|
2853 XSETWINDOW (window, w);
|
|
|
2854
|
|
|
2855 /* We have to add the glyphs to the line in the order outside,
|
|
|
2856 inside, whitespace. However the precedence dictates that we
|
|
|
2857 determine how many will fit in the reverse order. */
|
|
|
2858
|
|
|
2859 /* Determine how many whitespace glyphs we can display and where
|
|
|
2860 they should start. */
|
|
|
2861 white_in_start = dl->bounds.left_white;
|
|
|
2862 white_out_start = left_in_start;
|
|
|
2863 white_out_cnt = white_in_cnt = 0;
|
|
|
2864 elt = 0;
|
|
|
2865
|
|
|
2866 while (elt < Dynarr_length (dl->left_glyphs))
|
|
|
2867 {
|
|
|
2868 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt);
|
|
|
2869
|
|
|
2870 if (NILP (gb->extent))
|
|
|
2871 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
2872
|
|
|
2873 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE)
|
|
|
2874 {
|
|
|
2875 int width;
|
|
|
2876
|
|
|
2877 width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
2878
|
|
|
2879 if (white_in_start - width >= left_in_end)
|
|
|
2880 {
|
|
|
2881 white_in_cnt++;
|
|
|
2882 white_in_start -= width;
|
|
|
2883 gb->width = width;
|
|
|
2884 gb->active = 1;
|
|
|
2885 }
|
|
|
2886 else if (use_overflow
|
|
|
2887 && (white_out_start - width > dl->bounds.left_out))
|
|
|
2888 {
|
|
|
2889 white_out_cnt++;
|
|
|
2890 white_out_start -= width;
|
|
|
2891 gb->width = width;
|
|
|
2892 gb->active = 1;
|
|
|
2893 }
|
|
|
2894 else
|
|
|
2895 gb->active = 0;
|
|
|
2896 }
|
|
|
2897
|
|
|
2898 elt++;
|
|
|
2899 }
|
|
|
2900
|
|
|
2901 /* Determine how many inside margin glyphs we can display and where
|
|
|
2902 they should start. The inside margin glyphs get whatever space
|
|
|
2903 is left after the whitespace glyphs have been displayed. These
|
|
|
2904 are tricky to calculate since if we decide to use the overflow
|
|
|
2905 area we basicaly have to start over. So for these we build up a
|
|
|
2906 list of just the inside margin glyphs and manipulate it to
|
|
|
2907 determine the needed info. */
|
|
|
2908 {
|
|
|
2909 glyph_block_dynarr *ib;
|
|
|
2910 int avail_in, avail_out;
|
|
|
2911 int done = 0;
|
|
|
2912 int marker = 0;
|
|
|
2913 int used_in, used_out;
|
|
|
2914
|
|
|
2915 elt = 0;
|
|
|
2916 used_in = used_out = 0;
|
|
|
2917 ib = Dynarr_new (struct glyph_block);
|
|
|
2918 while (elt < Dynarr_length (dl->left_glyphs))
|
|
|
2919 {
|
|
|
2920 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt);
|
|
|
2921
|
|
|
2922 if (NILP (gb->extent))
|
|
|
2923 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
2924
|
|
|
2925 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) ==
|
|
|
2926 GL_INSIDE_MARGIN)
|
|
|
2927 {
|
|
|
2928 gb->width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
2929 used_in += gb->width;
|
|
|
2930 Dynarr_add (ib, *gb);
|
|
|
2931 }
|
|
|
2932
|
|
|
2933 elt++;
|
|
|
2934 }
|
|
|
2935
|
|
|
2936 if (white_out_cnt)
|
|
|
2937 avail_in = 0;
|
|
|
2938 else
|
|
|
2939 {
|
|
|
2940 avail_in = white_in_start - left_in_end;
|
|
|
2941 if (avail_in < 0)
|
|
|
2942 avail_in = 0;
|
|
|
2943 }
|
|
|
2944
|
|
|
2945 if (!use_overflow)
|
|
|
2946 avail_out = 0;
|
|
|
2947 else
|
|
|
2948 avail_out = white_out_start - dl->bounds.left_out;
|
|
|
2949
|
|
|
2950 marker = 0;
|
|
|
2951 while (!done && marker < Dynarr_length (ib))
|
|
|
2952 {
|
|
|
2953 int width = Dynarr_atp (ib, marker)->width;
|
|
|
2954
|
|
|
2955 /* If everything now fits in the available inside margin
|
|
|
2956 space, we're done. */
|
|
|
2957 if (used_in <= avail_in)
|
|
|
2958 done = 1;
|
|
|
2959 else
|
|
|
2960 {
|
|
|
2961 /* Otherwise see if we have room to move a glyph to the
|
|
|
2962 outside. */
|
|
|
2963 if (used_out + width <= avail_out)
|
|
|
2964 {
|
|
|
2965 used_out += width;
|
|
|
2966 used_in -= width;
|
|
|
2967 }
|
|
|
2968 else
|
|
|
2969 done = 1;
|
|
|
2970 }
|
|
|
2971
|
|
|
2972 if (!done)
|
|
|
2973 marker++;
|
|
|
2974 }
|
|
|
2975
|
|
|
2976 /* At this point we now know that everything from marker on goes in
|
|
|
2977 the inside margin and everything before it goes in the outside
|
|
|
2978 margin. The stuff going into the outside margin is guaranteed
|
|
|
2979 to fit, but we may have to trim some stuff from the inside. */
|
|
|
2980
|
|
|
2981 in_in_end = left_in_end;
|
|
|
2982 in_out_start = white_out_start;
|
|
|
2983 in_out_cnt = in_in_cnt = 0;
|
|
|
2984
|
|
|
2985 Dynarr_free (ib);
|
|
|
2986 elt = 0;
|
|
|
2987 while (elt < Dynarr_length (dl->left_glyphs))
|
|
|
2988 {
|
|
|
2989 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt);
|
|
|
2990
|
|
|
2991 if (NILP (gb->extent))
|
|
|
2992 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
2993
|
|
|
2994 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) ==
|
|
|
2995 GL_INSIDE_MARGIN)
|
|
|
2996 {
|
|
|
2997 int width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
2998
|
|
|
2999 if (used_out)
|
|
|
3000 {
|
|
|
3001 in_out_cnt++;
|
|
|
3002 in_out_start -= width;
|
|
|
3003 gb->width = width;
|
|
|
3004 gb->active = 1;
|
|
|
3005 used_out -= width;
|
|
|
3006 }
|
|
|
3007 else if (in_in_end + width < white_in_start)
|
|
|
3008 {
|
|
|
3009 in_in_cnt++;
|
|
|
3010 in_in_end += width;
|
|
|
3011 gb->width = width;
|
|
|
3012 gb->active = 1;
|
|
|
3013 }
|
|
|
3014 else
|
|
|
3015 gb->active = 0;
|
|
|
3016 }
|
|
|
3017
|
|
|
3018 elt++;
|
|
|
3019 }
|
|
|
3020 }
|
|
|
3021
|
|
|
3022 /* Determine how many outside margin glyphs we can display. They
|
|
|
3023 always start at the left outside margin and can only use the
|
|
|
3024 outside margin space. */
|
|
|
3025 out_end = dl->bounds.left_out;
|
|
|
3026 out_cnt = 0;
|
|
|
3027 elt = 0;
|
|
|
3028
|
|
|
3029 while (elt < Dynarr_length (dl->left_glyphs))
|
|
|
3030 {
|
|
|
3031 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt);
|
|
|
3032
|
|
|
3033 if (NILP (gb->extent))
|
|
|
3034 abort (); /* these should have beeb handled in add_glyph_rune */
|
|
|
3035
|
|
|
3036 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) ==
|
|
|
3037 GL_OUTSIDE_MARGIN)
|
|
|
3038 {
|
|
|
3039 int width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
3040
|
|
|
3041 if (out_end + width <= in_out_start)
|
|
|
3042 {
|
|
|
3043 out_cnt++;
|
|
|
3044 out_end += width;
|
|
|
3045 gb->width = width;
|
|
|
3046 gb->active = 1;
|
|
|
3047 }
|
|
|
3048 else
|
|
|
3049 gb->active = 0;
|
|
|
3050 }
|
|
|
3051
|
|
|
3052 elt++;
|
|
|
3053 }
|
|
|
3054
|
|
|
3055 /* Now that we now where everything goes, we add the glyphs as runes
|
|
|
3056 to the appropriate display blocks. */
|
|
|
3057 if (out_cnt || in_out_cnt || white_out_cnt)
|
|
|
3058 {
|
|
|
3059 odb = get_display_block_from_line (dl, LEFT_OUTSIDE_MARGIN);
|
|
|
3060 odb->start_pos = dl->bounds.left_out;
|
|
|
3061 /* #### We should stop adding a blank to account for the space
|
|
|
3062 between the end of the glyphs and the margin and instead set
|
|
|
3063 this accordingly. */
|
|
|
3064 odb->end_pos = dl->bounds.left_in;
|
|
|
3065 Dynarr_reset (odb->runes);
|
|
|
3066 }
|
|
|
3067 else
|
|
|
3068 odb = 0;
|
|
|
3069
|
|
|
3070 if (in_in_cnt || white_in_cnt)
|
|
|
3071 {
|
|
|
3072 idb = get_display_block_from_line (dl, LEFT_INSIDE_MARGIN);
|
|
|
3073 idb->start_pos = dl->bounds.left_in;
|
|
|
3074 /* #### See above comment for odb->end_pos */
|
|
|
3075 idb->end_pos = dl->bounds.left_white;
|
|
|
3076 Dynarr_reset (idb->runes);
|
|
|
3077 }
|
|
|
3078 else
|
|
|
3079 idb = 0;
|
|
|
3080
|
|
|
3081 /* First add the outside margin glyphs. */
|
|
|
3082 if (out_cnt)
|
|
|
3083 end_xpos = add_margin_runes (dl, odb, dl->bounds.left_out, out_cnt,
|
|
|
3084 GL_OUTSIDE_MARGIN, LEFT_GLYPHS, window);
|
|
|
3085 else
|
|
|
3086 end_xpos = dl->bounds.left_out;
|
|
|
3087
|
|
|
3088 /* There may be blank space between the outside margin glyphs and
|
|
|
3089 the inside margin glyphs. If so, add a blank. */
|
|
|
3090 if (in_out_cnt && (in_out_start - end_xpos))
|
|
|
3091 {
|
|
|
3092 add_margin_blank (dl, odb, w, end_xpos, in_out_start - end_xpos,
|
|
|
3093 LEFT_GLYPHS);
|
|
|
3094 }
|
|
|
3095
|
|
|
3096 /* Next add the inside margin glyphs which are actually in the
|
|
|
3097 outside margin. */
|
|
|
3098 if (in_out_cnt)
|
|
|
3099 {
|
|
|
3100 end_xpos = add_margin_runes (dl, odb, in_out_start, in_out_cnt,
|
|
|
3101 GL_INSIDE_MARGIN, LEFT_GLYPHS, window);
|
|
|
3102 }
|
|
|
3103
|
|
|
3104 /* If we didn't add any inside margin glyphs to the outside margin,
|
|
|
3105 but are adding whitespace glyphs, then we need to add a blank
|
|
|
3106 here. */
|
|
|
3107 if (!in_out_cnt && white_out_cnt && (white_out_start - end_xpos))
|
|
|
3108 {
|
|
|
3109 add_margin_blank (dl, odb, w, end_xpos, white_out_start - end_xpos,
|
|
|
3110 LEFT_GLYPHS);
|
|
|
3111 }
|
|
|
3112
|
|
|
3113 /* Next add the whitespace margin glyphs which are actually in the
|
|
|
3114 outside margin. */
|
|
|
3115 if (white_out_cnt)
|
|
|
3116 {
|
|
|
3117 end_xpos = add_margin_runes (dl, odb, white_out_start, white_out_cnt,
|
|
|
3118 GL_WHITESPACE, LEFT_GLYPHS, window);
|
|
|
3119 }
|
|
|
3120
|
|
|
3121 /* We take care of clearing between the end of the glyphs and the
|
|
|
3122 start of the inside margin for lines which have glyphs. */
|
|
|
3123 if (odb && (left_in_start - end_xpos))
|
|
|
3124 {
|
|
|
3125 add_margin_blank (dl, odb, w, end_xpos, left_in_start - end_xpos,
|
|
|
3126 LEFT_GLYPHS);
|
|
|
3127 }
|
|
|
3128
|
|
|
3129 /* Next add the inside margin glyphs which are actually in the
|
|
|
3130 inside margin. */
|
|
|
3131 if (in_in_cnt)
|
|
|
3132 {
|
|
|
3133 end_xpos = add_margin_runes (dl, idb, left_in_end, in_in_cnt,
|
|
|
3134 GL_INSIDE_MARGIN, LEFT_GLYPHS, window);
|
|
|
3135 }
|
|
|
3136 else
|
|
|
3137 end_xpos = left_in_end;
|
|
|
3138
|
|
|
3139 /* Make sure that the area between the end of the inside margin
|
|
|
3140 glyphs and the whitespace glyphs is cleared. */
|
|
|
3141 if (idb && (white_in_start - end_xpos > 0))
|
|
|
3142 {
|
|
|
3143 add_margin_blank (dl, idb, w, end_xpos, white_in_start - end_xpos,
|
|
|
3144 LEFT_GLYPHS);
|
|
|
3145 }
|
|
|
3146
|
|
|
3147 /* Next add the whitespace margin glyphs which are actually in the
|
|
|
3148 inside margin. */
|
|
|
3149 if (white_in_cnt)
|
|
|
3150 {
|
|
|
3151 add_margin_runes (dl, idb, white_in_start, white_in_cnt, GL_WHITESPACE,
|
|
|
3152 LEFT_GLYPHS, window);
|
|
|
3153 }
|
|
|
3154
|
|
|
3155 /* Whitespace glyphs always end right next to the text block so
|
|
|
3156 there is nothing we have to make sure is cleared after them. */
|
|
|
3157 }
|
|
|
3158
|
|
|
3159 /* Display glyphs in the right outside margin, right inside margin and
|
|
|
3160 right whitespace area. */
|
|
|
3161
|
|
|
3162 static void
|
|
|
3163 create_right_glyph_block (struct window *w, struct display_line *dl)
|
|
|
3164 {
|
|
|
3165 Lisp_Object window;
|
|
|
3166
|
|
|
3167 int use_overflow = (NILP (w->use_right_overflow) ? 0 : 1);
|
|
|
3168 int elt, end_xpos;
|
|
|
3169 int out_start, in_out_end, in_in_start, white_out_end, white_in_end;
|
|
|
3170 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt;
|
|
|
3171
|
|
|
3172 struct display_block *odb, *idb;
|
|
|
3173
|
|
|
3174 XSETWINDOW (window, w);
|
|
|
3175
|
|
|
3176 /* We have to add the glyphs to the line in the order outside,
|
|
|
3177 inside, whitespace. However the precedence dictates that we
|
|
|
3178 determine how many will fit in the reverse order. */
|
|
|
3179
|
|
|
3180 /* Determine how many whitespace glyphs we can display and where
|
|
|
3181 they should start. */
|
|
|
3182 white_in_end = dl->bounds.right_white;
|
|
|
3183 white_out_end = dl->bounds.right_in;
|
|
|
3184 white_out_cnt = white_in_cnt = 0;
|
|
|
3185 elt = 0;
|
|
|
3186
|
|
|
3187 while (elt < Dynarr_length (dl->right_glyphs))
|
|
|
3188 {
|
|
|
3189 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt);
|
|
|
3190
|
|
|
3191 if (NILP (gb->extent))
|
|
|
3192 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
3193
|
|
|
3194 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE)
|
|
|
3195 {
|
|
|
3196 int width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
3197
|
|
|
3198 if (white_in_end + width <= dl->bounds.right_in)
|
|
|
3199 {
|
|
|
3200 white_in_cnt++;
|
|
|
3201 white_in_end += width;
|
|
|
3202 gb->width = width;
|
|
|
3203 gb->active = 1;
|
|
|
3204 }
|
|
|
3205 else if (use_overflow
|
|
|
3206 && (white_out_end + width <= dl->bounds.right_out))
|
|
|
3207 {
|
|
|
3208 white_out_cnt++;
|
|
|
3209 white_out_end += width;
|
|
|
3210 gb->width = width;
|
|
|
3211 gb->active = 1;
|
|
|
3212 }
|
|
|
3213 else
|
|
|
3214 gb->active = 0;
|
|
|
3215 }
|
|
|
3216
|
|
|
3217 elt++;
|
|
|
3218 }
|
|
|
3219
|
|
|
3220 /* Determine how many inside margin glyphs we can display and where
|
|
|
3221 they should start. The inside margin glyphs get whatever space
|
|
|
3222 is left after the whitespace glyphs have been displayed. These
|
|
|
3223 are tricky to calculate since if we decide to use the overflow
|
|
|
3224 area we basicaly have to start over. So for these we build up a
|
|
|
3225 list of just the inside margin glyphs and manipulate it to
|
|
|
3226 determine the needed info. */
|
|
|
3227 {
|
|
|
3228 glyph_block_dynarr *ib;
|
|
|
3229 int avail_in, avail_out;
|
|
|
3230 int done = 0;
|
|
|
3231 int marker = 0;
|
|
|
3232 int used_in, used_out;
|
|
|
3233
|
|
|
3234 elt = 0;
|
|
|
3235 used_in = used_out = 0;
|
|
|
3236 ib = Dynarr_new (struct glyph_block);
|
|
|
3237 while (elt < Dynarr_length (dl->right_glyphs))
|
|
|
3238 {
|
|
|
3239 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt);
|
|
|
3240
|
|
|
3241 if (NILP (gb->extent))
|
|
|
3242 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
3243
|
|
|
3244 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN)
|
|
|
3245 {
|
|
|
3246 gb->width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
3247 used_in += gb->width;
|
|
|
3248 Dynarr_add (ib, *gb);
|
|
|
3249 }
|
|
|
3250
|
|
|
3251 elt++;
|
|
|
3252 }
|
|
|
3253
|
|
|
3254 if (white_out_cnt)
|
|
|
3255 avail_in = 0;
|
|
|
3256 else
|
|
|
3257 avail_in = dl->bounds.right_in - white_in_end;
|
|
|
3258
|
|
|
3259 if (!use_overflow)
|
|
|
3260 avail_out = 0;
|
|
|
3261 else
|
|
|
3262 avail_out = dl->bounds.right_out - white_out_end;
|
|
|
3263
|
|
|
3264 marker = 0;
|
|
|
3265 while (!done && marker < Dynarr_length (ib))
|
|
|
3266 {
|
|
|
3267 int width = Dynarr_atp (ib, marker)->width;
|
|
|
3268
|
|
|
3269 /* If everything now fits in the available inside margin
|
|
|
3270 space, we're done. */
|
|
|
3271 if (used_in <= avail_in)
|
|
|
3272 done = 1;
|
|
|
3273 else
|
|
|
3274 {
|
|
|
3275 /* Otherwise see if we have room to move a glyph to the
|
|
|
3276 outside. */
|
|
|
3277 if (used_out + width <= avail_out)
|
|
|
3278 {
|
|
|
3279 used_out += width;
|
|
|
3280 used_in -= width;
|
|
|
3281 }
|
|
|
3282 else
|
|
|
3283 done = 1;
|
|
|
3284 }
|
|
|
3285
|
|
|
3286 if (!done)
|
|
|
3287 marker++;
|
|
|
3288 }
|
|
|
3289
|
|
|
3290 /* At this point we now know that everything from marker on goes in
|
|
|
3291 the inside margin and everything before it goes in the outside
|
|
|
3292 margin. The stuff going into the outside margin is guaranteed
|
|
|
3293 to fit, but we may have to trim some stuff from the inside. */
|
|
|
3294
|
|
|
3295 in_in_start = dl->bounds.right_in;
|
|
|
3296 in_out_end = dl->bounds.right_in;
|
|
|
3297 in_out_cnt = in_in_cnt = 0;
|
|
|
3298
|
|
|
3299 Dynarr_free (ib);
|
|
|
3300 elt = 0;
|
|
|
3301 while (elt < Dynarr_length (dl->right_glyphs))
|
|
|
3302 {
|
|
|
3303 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt);
|
|
|
3304
|
|
|
3305 if (NILP (gb->extent))
|
|
|
3306 abort (); /* these should have been handled in add_glyph_rune */
|
|
|
3307
|
|
|
3308 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN)
|
|
|
3309 {
|
|
|
3310 int width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
3311
|
|
|
3312 if (used_out)
|
|
|
3313 {
|
|
|
3314 in_out_cnt++;
|
|
|
3315 in_out_end += width;
|
|
|
3316 gb->width = width;
|
|
|
3317 gb->active = 1;
|
|
|
3318 used_out -= width;
|
|
|
3319 }
|
|
|
3320 else if (in_in_start - width >= white_in_end)
|
|
|
3321 {
|
|
|
3322 in_in_cnt++;
|
|
|
3323 in_in_start -= width;
|
|
|
3324 gb->width = width;
|
|
|
3325 gb->active = 1;
|
|
|
3326 }
|
|
|
3327 else
|
|
|
3328 gb->active = 0;
|
|
|
3329 }
|
|
|
3330
|
|
|
3331 elt++;
|
|
|
3332 }
|
|
|
3333 }
|
|
|
3334
|
|
|
3335 /* Determine how many outside margin glyphs we can display. They
|
|
|
3336 always start at the right outside margin and can only use the
|
|
|
3337 outside margin space. */
|
|
|
3338 out_start = dl->bounds.right_out;
|
|
|
3339 out_cnt = 0;
|
|
|
3340 elt = 0;
|
|
|
3341
|
|
|
3342 while (elt < Dynarr_length (dl->right_glyphs))
|
|
|
3343 {
|
|
|
3344 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt);
|
|
|
3345
|
|
|
3346 if (NILP (gb->extent))
|
|
|
3347 abort (); /* these should have beeb handled in add_glyph_rune */
|
|
|
3348
|
|
|
3349 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_OUTSIDE_MARGIN)
|
|
|
3350 {
|
|
|
3351 int width = glyph_width (gb->glyph, Qnil, gb->findex, window);
|
|
|
3352
|
|
|
3353 if (out_start - width >= in_out_end)
|
|
|
3354 {
|
|
|
3355 out_cnt++;
|
|
|
3356 out_start -= width;
|
|
|
3357 gb->width = width;
|
|
|
3358 gb->active = 1;
|
|
|
3359 }
|
|
|
3360 else
|
|
|
3361 gb->active = 0;
|
|
|
3362 }
|
|
|
3363
|
|
|
3364 elt++;
|
|
|
3365 }
|
|
|
3366
|
|
|
3367 /* Now that we now where everything goes, we add the glyphs as runes
|
|
|
3368 to the appropriate display blocks. */
|
|
|
3369 if (out_cnt || in_out_cnt || white_out_cnt)
|
|
|
3370 {
|
|
|
3371 odb = get_display_block_from_line (dl, RIGHT_OUTSIDE_MARGIN);
|
|
|
3372 /* #### See comments before odb->start_pos init in
|
|
|
3373 create_left_glyph_block */
|
|
|
3374 odb->start_pos = dl->bounds.right_in;
|
|
|
3375 odb->end_pos = dl->bounds.right_out;
|
|
|
3376 Dynarr_reset (odb->runes);
|
|
|
3377 }
|
|
|
3378 else
|
|
|
3379 odb = 0;
|
|
|
3380
|
|
|
3381 if (in_in_cnt || white_in_cnt)
|
|
|
3382 {
|
|
|
3383 idb = get_display_block_from_line (dl, RIGHT_INSIDE_MARGIN);
|
|
|
3384 idb->start_pos = dl->bounds.right_white;
|
|
|
3385 /* #### See comments before odb->start_pos init in
|
|
|
3386 create_left_glyph_block */
|
|
|
3387 idb->end_pos = dl->bounds.right_in;
|
|
|
3388 Dynarr_reset (idb->runes);
|
|
|
3389 }
|
|
|
3390 else
|
|
|
3391 idb = 0;
|
|
|
3392
|
|
|
3393 /* First add the whitespace margin glyphs which are actually in the
|
|
|
3394 inside margin. */
|
|
|
3395 if (white_in_cnt)
|
|
|
3396 {
|
|
|
3397 end_xpos = add_margin_runes (dl, idb, dl->bounds.right_white,
|
|
|
3398 white_in_cnt, GL_WHITESPACE, RIGHT_GLYPHS,
|
|
|
3399 window);
|
|
|
3400 }
|
|
|
3401 else
|
|
|
3402 end_xpos = dl->bounds.right_white;
|
|
|
3403
|
|
|
3404 /* Make sure that the area between the end of the whitespace glyphs
|
|
|
3405 and the inside margin glyphs is cleared. */
|
|
|
3406 if (in_in_cnt && (in_in_start - end_xpos))
|
|
|
3407 {
|
|
|
3408 add_margin_blank (dl, idb, w, end_xpos, in_in_start - end_xpos,
|
|
|
3409 RIGHT_GLYPHS);
|
|
|
3410 }
|
|
|
3411
|
|
|
3412 /* Next add the inside margin glyphs which are actually in the
|
|
|
3413 inside margin. */
|
|
|
3414 if (in_in_cnt)
|
|
|
3415 {
|
|
|
3416 end_xpos = add_margin_runes (dl, idb, in_in_start, in_in_cnt,
|
|
|
3417 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window);
|
|
|
3418 }
|
|
|
3419
|
|
|
3420 /* If we didn't add any inside margin glyphs then make sure the rest
|
|
|
3421 of the inside margin area gets cleared. */
|
|
|
3422 if (idb && (dl->bounds.right_in - end_xpos))
|
|
|
3423 {
|
|
|
3424 add_margin_blank (dl, idb, w, end_xpos, dl->bounds.right_in - end_xpos,
|
|
|
3425 RIGHT_GLYPHS);
|
|
|
3426 }
|
|
|
3427
|
|
|
3428 /* Next add any whitespace glyphs in the outside margin. */
|
|
|
3429 if (white_out_cnt)
|
|
|
3430 {
|
|
|
3431 end_xpos = add_margin_runes (dl, odb, dl->bounds.right_in, white_out_cnt,
|
|
|
3432 GL_WHITESPACE, RIGHT_GLYPHS, window);
|
|
|
3433 }
|
|
|
3434 else
|
|
|
3435 end_xpos = dl->bounds.right_in;
|
|
|
3436
|
|
|
3437 /* Next add any inside margin glyphs in the outside margin. */
|
|
|
3438 if (in_out_cnt)
|
|
|
3439 {
|
|
|
3440 end_xpos = add_margin_runes (dl, odb, end_xpos, in_out_cnt,
|
|
|
3441 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window);
|
|
|
3442 }
|
|
|
3443
|
|
|
3444 /* There may be space between any whitespace or inside margin glyphs
|
|
|
3445 in the outside margin and the actual outside margin glyphs. */
|
|
|
3446 if (odb && (out_start - end_xpos))
|
|
|
3447 {
|
|
|
3448 add_margin_blank (dl, odb, w, end_xpos, out_start - end_xpos,
|
|
|
3449 RIGHT_GLYPHS);
|
|
|
3450 }
|
|
|
3451
|
|
|
3452 /* Finally, add the outside margin glyphs. */
|
|
|
3453 if (out_cnt)
|
|
|
3454 {
|
|
|
3455 add_margin_runes (dl, odb, out_start, out_cnt, GL_OUTSIDE_MARGIN,
|
|
|
3456 RIGHT_GLYPHS, window);
|
|
|
3457 }
|
|
|
3458 }
|
|
|
3459
|
|
|
3460
|
|
|
3461 /***************************************************************************/
|
|
|
3462 /* */
|
|
|
3463 /* modeline routines */
|
|
|
3464 /* */
|
|
|
3465 /***************************************************************************/
|
|
|
3466
|
|
|
3467 /* Ensure that the given display line DL accurately represents the
|
|
|
3468 modeline for the given window. */
|
|
|
3469
|
|
|
3470 static void
|
|
|
3471 generate_modeline (struct window *w, struct display_line *dl, int type)
|
|
|
3472 {
|
|
|
3473 struct buffer *b = XBUFFER (w->buffer);
|
|
|
3474 struct frame *f = XFRAME (w->frame);
|
|
|
3475 struct device *d = XDEVICE (f->device);
|
|
|
3476
|
|
|
3477 /* Unlike display line and rune pointers, this one can't change underneath
|
|
|
3478 our feet. */
|
|
|
3479 struct display_block *db = get_display_block_from_line (dl, TEXT);
|
|
|
3480 int max_pixpos, min_pixpos, ypos_adj;
|
|
|
3481 Lisp_Object font_inst;
|
|
|
3482
|
|
|
3483 /* This will actually determine incorrect inside boundaries for the
|
|
|
3484 modeline since it ignores the margins. However being aware of this fact
|
|
|
3485 we never use those values anywhere so it doesn't matter. */
|
|
|
3486 dl->bounds = calculate_display_line_boundaries (w, 1);
|
|
|
3487
|
|
|
3488 /* We are generating a modeline. */
|
|
|
3489 dl->modeline = 1;
|
|
|
3490 dl->cursor_elt = -1;
|
|
|
3491
|
|
|
3492 /* Reset the runes on the modeline. */
|
|
|
3493 Dynarr_reset (db->runes);
|
|
|
3494
|
|
|
3495 if (!WINDOW_HAS_MODELINE_P (w))
|
|
|
3496 {
|
|
|
3497 struct rune rb;
|
|
|
3498
|
|
|
3499 /* If there is a horizontal scrollbar, don't add anything. */
|
|
|
3500 if (window_scrollbar_height (w))
|
|
|
3501 return;
|
|
|
3502
|
|
|
3503 dl->ascent = DEVMETH (d, divider_height, ());
|
|
|
3504 dl->descent = 0;
|
|
|
3505 /* The modeline is at the bottom of the gutters. */
|
|
|
3506 dl->ypos = WINDOW_BOTTOM (w);
|
|
|
3507
|
|
|
3508 rb.findex = MODELINE_INDEX;
|
|
|
3509 rb.xpos = dl->bounds.left_out;
|
|
|
3510 rb.width = dl->bounds.right_out - dl->bounds.left_out;
|
|
|
3511 rb.bufpos = 0;
|
|
|
3512 rb.endpos = 0;
|
|
|
3513 rb.type = RUNE_HLINE;
|
|
|
3514 rb.object.hline.thickness = 1;
|
|
|
3515 rb.object.hline.yoffset = 0;
|
|
|
3516 rb.cursor_type = NO_CURSOR;
|
|
|
3517
|
|
|
3518 if (!EQ (Qzero, w->modeline_shadow_thickness)
|
|
|
3519 && FRAME_WIN_P (f))
|
|
|
3520 {
|
|
|
3521 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w);
|
|
|
3522
|
|
|
3523 dl->ypos -= shadow_thickness;
|
|
|
3524 rb.xpos += shadow_thickness;
|
|
|
3525 rb.width -= 2 * shadow_thickness;
|
|
|
3526 }
|
|
|
3527
|
|
|
3528 Dynarr_add (db->runes, rb);
|
|
|
3529 return;
|
|
|
3530 }
|
|
|
3531
|
|
|
3532 /* !!#### not right; needs to compute the max height of
|
|
|
3533 all the charsets */
|
|
|
3534 font_inst = WINDOW_FACE_CACHEL_FONT (w, MODELINE_INDEX, Vcharset_ascii);
|
|
|
3535
|
|
|
3536 dl->ascent = XFONT_INSTANCE (font_inst)->ascent;
|
|
|
3537 dl->descent = XFONT_INSTANCE (font_inst)->descent;
|
|
|
3538
|
|
|
3539 min_pixpos = dl->bounds.left_out;
|
|
|
3540 max_pixpos = dl->bounds.right_out;
|
|
|
3541
|
|
|
3542 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f))
|
|
|
3543 {
|
|
|
3544 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w);
|
|
|
3545
|
|
|
3546 ypos_adj = shadow_thickness;
|
|
|
3547 min_pixpos += shadow_thickness;
|
|
|
3548 max_pixpos -= shadow_thickness;
|
|
|
3549 }
|
|
|
3550 else
|
|
|
3551 ypos_adj = 0;
|
|
|
3552
|
|
|
3553 generate_formatted_string_db (b->modeline_format,
|
|
|
3554 b->generated_modeline_string, w, dl, db,
|
|
|
3555 MODELINE_INDEX, min_pixpos, max_pixpos, type);
|
|
|
3556
|
|
|
3557 /* The modeline is at the bottom of the gutters. We have to wait to
|
|
|
3558 set this until we've generated teh modeline in order to account
|
|
|
3559 for any embedded faces. */
|
|
|
3560 dl->ypos = WINDOW_BOTTOM (w) - dl->descent - ypos_adj;
|
|
|
3561 }
|
|
|
3562
|
|
|
3563 static void
|
|
|
3564 generate_formatted_string_db (Lisp_Object format_str, Lisp_Object result_str,
|
|
|
3565 struct window *w, struct display_line *dl,
|
|
|
3566 struct display_block *db, face_index findex,
|
|
|
3567 int min_pixpos, int max_pixpos, int type)
|
|
|
3568 {
|
|
|
3569 struct frame *f = XFRAME (w->frame);
|
|
|
3570 struct device *d = XDEVICE (f->device);
|
|
|
3571
|
|
|
3572 pos_data data;
|
|
|
3573 int c_pixpos;
|
|
|
3574
|
|
|
3575 memset (&data, 0, sizeof (data));
|
|
|
3576 data.d = d;
|
|
|
3577 data.db = db;
|
|
|
3578 data.dl = dl;
|
|
|
3579 data.findex = findex;
|
|
|
3580 data.pixpos = min_pixpos;
|
|
|
3581 data.max_pixpos = max_pixpos;
|
|
|
3582 data.cursor_type = NO_CURSOR;
|
|
|
3583 data.last_charset = Qunbound;
|
|
94
|
3584 data.last_findex = DEFAULT_INDEX;
|
|
0
|
3585 data.result_str = result_str;
|
|
|
3586 data.is_modeline = 1;
|
|
|
3587 XSETWINDOW (data.window, w);
|
|
|
3588
|
|
|
3589 Dynarr_reset (formatted_string_extent_dynarr);
|
|
|
3590 Dynarr_reset (formatted_string_extent_start_dynarr);
|
|
|
3591 Dynarr_reset (formatted_string_extent_end_dynarr);
|
|
|
3592
|
|
|
3593 /* This recursively builds up the modeline. */
|
|
|
3594 generate_fstring_runes (w, &data, 0, 0, -1, format_str, 0,
|
|
|
3595 max_pixpos - min_pixpos, findex, type);
|
|
|
3596
|
|
|
3597 if (Dynarr_length (db->runes))
|
|
|
3598 {
|
|
|
3599 struct rune *rb =
|
|
|
3600 Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1);
|
|
|
3601 c_pixpos = rb->xpos + rb->width;
|
|
|
3602 }
|
|
|
3603 else
|
|
|
3604 c_pixpos = min_pixpos;
|
|
|
3605
|
|
|
3606 /* If we don't reach the right side of the window, add a blank rune
|
|
|
3607 to make up the difference. This usually only occurs if the
|
|
|
3608 modeline face is using a proportional width font or a fixed width
|
|
|
3609 font of a different size from the default face font. */
|
|
|
3610
|
|
|
3611 if (c_pixpos < max_pixpos)
|
|
|
3612 {
|
|
|
3613 data.pixpos = c_pixpos;
|
|
|
3614 data.blank_width = max_pixpos - data.pixpos;
|
|
|
3615
|
|
|
3616 add_blank_rune (&data, NULL, 0);
|
|
|
3617 }
|
|
|
3618
|
|
|
3619 /* Now create the result string and frob the extents into it. */
|
|
|
3620 if (!NILP (result_str))
|
|
|
3621 {
|
|
|
3622 int elt;
|
|
|
3623 Bytecount len;
|
|
|
3624 Bufbyte *strdata;
|
|
|
3625 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w));
|
|
|
3626
|
|
|
3627 detach_all_extents (result_str);
|
|
|
3628 resize_string (XSTRING (result_str), -1,
|
|
16
|
3629 data.bytepos - XSTRING_LENGTH (result_str));
|
|
|
3630
|
|
|
3631 strdata = XSTRING_DATA (result_str);
|
|
0
|
3632
|
|
|
3633 for (elt = 0, len = 0; elt < Dynarr_length (db->runes); elt++)
|
|
|
3634 {
|
|
|
3635 if (Dynarr_atp (db->runes, elt)->type == RUNE_CHAR)
|
|
|
3636 {
|
|
|
3637 len += (set_charptr_emchar
|
|
|
3638 (strdata + len, Dynarr_atp (db->runes,
|
|
|
3639 elt)->object.chr.ch));
|
|
|
3640 }
|
|
|
3641 }
|
|
|
3642
|
|
|
3643 for (elt = 0; elt < Dynarr_length (formatted_string_extent_dynarr);
|
|
|
3644 elt++)
|
|
|
3645 {
|
|
|
3646 Lisp_Object extent = Qnil;
|
|
|
3647 Lisp_Object child;
|
|
|
3648
|
|
|
3649 XSETEXTENT (extent, Dynarr_at (formatted_string_extent_dynarr, elt));
|
|
|
3650 child = Fgethash (extent, buf->modeline_extent_table, Qnil);
|
|
|
3651 if (NILP (child))
|
|
|
3652 {
|
|
|
3653 child = Fmake_extent (Qnil, Qnil, result_str);
|
|
|
3654 Fputhash (extent, child, buf->modeline_extent_table);
|
|
|
3655 }
|
|
|
3656 Fset_extent_parent (child, extent);
|
|
|
3657 set_extent_endpoints
|
|
|
3658 (XEXTENT (child),
|
|
|
3659 Dynarr_at (formatted_string_extent_start_dynarr, elt),
|
|
|
3660 Dynarr_at (formatted_string_extent_end_dynarr, elt),
|
|
|
3661 result_str);
|
|
|
3662 }
|
|
|
3663 }
|
|
|
3664 }
|
|
|
3665
|
|
|
3666 static Charcount
|
|
|
3667 add_string_to_fstring_db_runes (pos_data *data, CONST Bufbyte *str,
|
|
100
|
3668 Charcount pos, Charcount min_pos, Charcount max_pos)
|
|
0
|
3669 {
|
|
|
3670 /* This function has been Mule-ized. */
|
|
|
3671 Charcount end;
|
|
|
3672 CONST Bufbyte *cur_pos = str;
|
|
|
3673 struct display_block *db = data->db;
|
|
|
3674
|
|
|
3675 data->blank_width = space_width (XWINDOW (data->window));
|
|
|
3676 while (Dynarr_length (db->runes) < pos)
|
|
|
3677 add_blank_rune (data, NULL, 0);
|
|
|
3678
|
|
|
3679 end = (Dynarr_length (db->runes) +
|
|
|
3680 bytecount_to_charcount (str, strlen ((CONST char *) str)));
|
|
100
|
3681 if (max_pos != -1)
|
|
|
3682 end = min (max_pos, end);
|
|
0
|
3683
|
|
|
3684 while (pos < end && *cur_pos)
|
|
|
3685 {
|
|
|
3686 CONST Bufbyte *old_cur_pos = cur_pos;
|
|
|
3687 int succeeded;
|
|
|
3688
|
|
|
3689 data->ch = charptr_emchar (cur_pos);
|
|
|
3690 succeeded = (add_emchar_rune (data) != ADD_FAILED);
|
|
|
3691 INC_CHARPTR (cur_pos);
|
|
|
3692 if (succeeded)
|
|
|
3693 {
|
|
|
3694 pos++;
|
|
|
3695 data->modeline_charpos++;
|
|
|
3696 data->bytepos += cur_pos - old_cur_pos;
|
|
|
3697 }
|
|
|
3698 }
|
|
|
3699
|
|
100
|
3700 while (Dynarr_length (db->runes) < min_pos &&
|
|
0
|
3701 (data->pixpos + data->blank_width <= data->max_pixpos))
|
|
|
3702 add_blank_rune (data, NULL, 0);
|
|
|
3703
|
|
|
3704 return Dynarr_length (db->runes);
|
|
|
3705 }
|
|
|
3706
|
|
|
3707 /* #### Urk! Should also handle begin-glyphs and end-glyphs in
|
|
|
3708 modeline extents. */
|
|
|
3709 static Charcount
|
|
|
3710 add_glyph_to_fstring_db_runes (pos_data *data, Lisp_Object glyph,
|
|
100
|
3711 Charcount pos, Charcount min_pos, Charcount max_pos)
|
|
0
|
3712 {
|
|
|
3713 /* This function has been Mule-ized. */
|
|
|
3714 Charcount end;
|
|
|
3715 struct display_block *db = data->db;
|
|
|
3716 struct glyph_block gb;
|
|
|
3717
|
|
|
3718 data->blank_width = space_width (XWINDOW (data->window));
|
|
|
3719 while (Dynarr_length (db->runes) < pos)
|
|
|
3720 add_blank_rune (data, NULL, 0);
|
|
|
3721
|
|
|
3722 end = Dynarr_length (db->runes) + 1;
|
|
100
|
3723 if (max_pos != -1)
|
|
|
3724 end = min (max_pos, end);
|
|
0
|
3725
|
|
|
3726 gb.glyph = glyph;
|
|
|
3727 gb.extent = Qnil;
|
|
|
3728 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0);
|
|
|
3729 pos++;
|
|
|
3730
|
|
|
3731 while (Dynarr_length (db->runes) < pos &&
|
|
|
3732 (data->pixpos + data->blank_width <= data->max_pixpos))
|
|
|
3733 add_blank_rune (data, NULL, 0);
|
|
|
3734
|
|
|
3735 return Dynarr_length (db->runes);
|
|
|
3736 }
|
|
|
3737
|
|
|
3738 /* If max_pos is == -1, it is considered to be infinite. The same is
|
|
|
3739 true of max_pixsize. */
|
|
|
3740 #define SET_CURRENT_MODE_CHARS_PIXSIZE \
|
|
|
3741 if (Dynarr_length (data->db->runes)) \
|
|
|
3742 cur_pixsize = data->pixpos - Dynarr_atp (data->db->runes, 0)->xpos; \
|
|
|
3743 else \
|
|
|
3744 cur_pixsize = 0;
|
|
|
3745
|
|
|
3746 /* Note that this function does "positions" in terms of characters and
|
|
|
3747 not in terms of columns. This is necessary to make the formatting
|
|
|
3748 work correctly when proportional width fonts are used in the
|
|
|
3749 modeline. */
|
|
|
3750 static Charcount
|
|
|
3751 generate_fstring_runes (struct window *w, pos_data *data, Charcount pos,
|
|
|
3752 Charcount min_pos, Charcount max_pos,
|
|
|
3753 Lisp_Object elt, int depth, int max_pixsize,
|
|
|
3754 face_index findex, int type)
|
|
|
3755 {
|
|
|
3756 /* This function has been Mule-ized. */
|
|
|
3757 /* #### The other losing things in this function are:
|
|
|
3758
|
|
|
3759 -- C zero-terminated-string lossage.
|
|
|
3760 -- Non-printable characters should be converted into something
|
|
|
3761 appropriate (e.g. ^F) instead of blindly being printed anyway.
|
|
|
3762 */
|
|
|
3763
|
|
|
3764 tail_recurse:
|
|
|
3765 if (depth > 10)
|
|
|
3766 goto invalid;
|
|
|
3767
|
|
|
3768 depth++;
|
|
|
3769
|
|
|
3770 if (STRINGP (elt))
|
|
|
3771 {
|
|
|
3772 /* A string. Add to the display line and check for %-constructs
|
|
|
3773 within it. */
|
|
|
3774
|
|
16
|
3775 Bufbyte *this = XSTRING_DATA (elt);
|
|
0
|
3776
|
|
|
3777 while ((pos < max_pos || max_pos == -1) && *this)
|
|
|
3778 {
|
|
|
3779 Bufbyte *last = this;
|
|
|
3780
|
|
|
3781 while (*this && *this != '%')
|
|
|
3782 this++;
|
|
|
3783
|
|
|
3784 if (this != last)
|
|
|
3785 {
|
|
|
3786 /* The string is just a string. */
|
|
|
3787 Charcount size =
|
|
|
3788 bytecount_to_charcount (last, this - last) + pos;
|
|
|
3789 Charcount tmp_max = (max_pos == -1 ? size : min (size, max_pos));
|
|
|
3790
|
|
|
3791 pos = add_string_to_fstring_db_runes (data, last, pos, pos,
|
|
|
3792 tmp_max);
|
|
|
3793 }
|
|
|
3794 else /* *this == '%' */
|
|
|
3795 {
|
|
|
3796 Charcount spec_width = 0;
|
|
|
3797
|
|
|
3798 this++; /* skip over '%' */
|
|
|
3799
|
|
|
3800 /* We can't allow -ve args due to the "%-" construct.
|
|
|
3801 * Argument specifies minwidth but not maxwidth
|
|
|
3802 * (maxwidth can be specified by
|
|
|
3803 * (<negative-number> . <stuff>) modeline elements)
|
|
|
3804 */
|
|
|
3805 while (isdigit (*this))
|
|
|
3806 {
|
|
|
3807 spec_width = spec_width * 10 + (*this - '0');
|
|
|
3808 this++;
|
|
|
3809 }
|
|
|
3810 spec_width += pos;
|
|
|
3811
|
|
|
3812 if (*this == 'M')
|
|
|
3813 {
|
|
|
3814 pos = generate_fstring_runes (w, data, pos, spec_width,
|
|
|
3815 max_pos, Vglobal_mode_string,
|
|
|
3816 depth, max_pixsize, findex,
|
|
|
3817 type);
|
|
|
3818 }
|
|
|
3819 else if (*this == '-')
|
|
|
3820 {
|
|
|
3821 Charcount num_to_add;
|
|
|
3822
|
|
|
3823 if (max_pixsize < 0)
|
|
|
3824 num_to_add = 0;
|
|
|
3825 else if (max_pos != -1)
|
|
|
3826 num_to_add = max_pos - pos;
|
|
|
3827 else
|
|
|
3828 {
|
|
|
3829 int cur_pixsize;
|
|
|
3830 int dash_pixsize;
|
|
|
3831 Bufbyte ch = '-';
|
|
|
3832 SET_CURRENT_MODE_CHARS_PIXSIZE;
|
|
|
3833
|
|
|
3834 dash_pixsize =
|
|
|
3835 redisplay_text_width_string (w, findex, &ch, Qnil, 0,
|
|
|
3836 1);
|
|
|
3837
|
|
|
3838 num_to_add = (max_pixsize - cur_pixsize) / dash_pixsize;
|
|
|
3839 num_to_add++;
|
|
|
3840 }
|
|
|
3841
|
|
|
3842 while (num_to_add--)
|
|
|
3843 pos = add_string_to_fstring_db_runes
|
|
|
3844 (data, (CONST Bufbyte *) "-", pos, pos, max_pos);
|
|
|
3845 }
|
|
|
3846 else if (*this != 0)
|
|
|
3847 {
|
|
|
3848 Bufbyte *str;
|
|
|
3849 Emchar ch = charptr_emchar (this);
|
|
|
3850 decode_mode_spec (w, ch, type);
|
|
|
3851
|
|
|
3852 str = Dynarr_atp (mode_spec_bufbyte_string, 0);
|
|
|
3853 pos = add_string_to_fstring_db_runes (data,str, pos, pos,
|
|
|
3854 max_pos);
|
|
|
3855 }
|
|
|
3856
|
|
|
3857 /* NOT this++. There could be any sort of character at
|
|
|
3858 the current position. */
|
|
|
3859 INC_CHARPTR (this);
|
|
|
3860 }
|
|
|
3861
|
|
|
3862 if (max_pixsize > 0)
|
|
|
3863 {
|
|
|
3864 int cur_pixsize;
|
|
|
3865 SET_CURRENT_MODE_CHARS_PIXSIZE;
|
|
|
3866
|
|
|
3867 if (cur_pixsize >= max_pixsize)
|
|
|
3868 break;
|
|
|
3869 }
|
|
|
3870 }
|
|
|
3871 }
|
|
|
3872 else if (SYMBOLP (elt))
|
|
|
3873 {
|
|
|
3874 /* A symbol: process the value of the symbol recursively
|
|
|
3875 as if it appeared here directly. */
|
|
|
3876 Lisp_Object tem = symbol_value_in_buffer (elt, w->buffer);
|
|
|
3877
|
|
|
3878 if (!UNBOUNDP (tem))
|
|
|
3879 {
|
|
|
3880 /* If value is a string, output that string literally:
|
|
|
3881 don't check for % within it. */
|
|
|
3882 if (STRINGP (tem))
|
|
|
3883 {
|
|
|
3884 pos =
|
|
|
3885 add_string_to_fstring_db_runes
|
|
16
|
3886 (data, XSTRING_DATA (tem), pos, min_pos, max_pos);
|
|
0
|
3887 }
|
|
|
3888 /* Give up right away for nil or t. */
|
|
|
3889 else if (!EQ (tem, elt))
|
|
|
3890 {
|
|
|
3891 elt = tem;
|
|
|
3892 goto tail_recurse;
|
|
|
3893 }
|
|
|
3894 }
|
|
|
3895 }
|
|
|
3896 else if (CONSP (elt))
|
|
|
3897 {
|
|
|
3898 /* A cons cell: four distinct cases.
|
|
|
3899 * If first element is a string or a cons, process all the elements
|
|
|
3900 * and effectively concatenate them.
|
|
|
3901 * If first element is a negative number, truncate displaying cdr to
|
|
|
3902 * at most that many characters. If positive, pad (with spaces)
|
|
|
3903 * to at least that many characters.
|
|
|
3904 * If first element is a symbol, process the cadr or caddr recursively
|
|
|
3905 * according to whether the symbol's value is non-nil or nil.
|
|
|
3906 * If first element is a face, process the cdr recursively
|
|
|
3907 * without altering the depth.
|
|
|
3908 */
|
|
|
3909 Lisp_Object car, tem;
|
|
|
3910
|
|
|
3911 car = XCAR (elt);
|
|
|
3912 if (SYMBOLP (car))
|
|
|
3913 {
|
|
|
3914 elt = XCDR (elt);
|
|
|
3915 if (!CONSP (elt))
|
|
|
3916 goto invalid;
|
|
|
3917 tem = symbol_value_in_buffer (car, w->buffer);
|
|
|
3918 /* elt is now the cdr, and we know it is a cons cell.
|
|
|
3919 Use its car if CAR has a non-nil value. */
|
|
|
3920 if (!UNBOUNDP (tem))
|
|
|
3921 {
|
|
|
3922 if (!NILP (tem))
|
|
|
3923 {
|
|
|
3924 elt = XCAR (elt);
|
|
|
3925 goto tail_recurse;
|
|
|
3926 }
|
|
|
3927 }
|
|
|
3928 /* Symbol's value is nil (or symbol is unbound)
|
|
|
3929 * Get the cddr of the original list
|
|
|
3930 * and if possible find the caddr and use that.
|
|
|
3931 */
|
|
|
3932 elt = XCDR (elt);
|
|
|
3933 if (NILP (elt))
|
|
|
3934 ;
|
|
|
3935 else if (!CONSP (elt))
|
|
|
3936 goto invalid;
|
|
|
3937 else
|
|
|
3938 {
|
|
|
3939 elt = XCAR (elt);
|
|
|
3940 goto tail_recurse;
|
|
|
3941 }
|
|
|
3942 }
|
|
|
3943 else if (INTP (car))
|
|
|
3944 {
|
|
|
3945 Charcount lim = XINT (car);
|
|
|
3946
|
|
|
3947 elt = XCDR (elt);
|
|
|
3948
|
|
|
3949 if (lim < 0)
|
|
|
3950 {
|
|
|
3951 /* Negative int means reduce maximum width.
|
|
|
3952 * DO NOT change MIN_PIXPOS here!
|
|
|
3953 * (20 -10 . foo) should truncate foo to 10 col
|
|
|
3954 * and then pad to 20.
|
|
|
3955 */
|
|
|
3956 if (max_pos == -1)
|
|
|
3957 max_pos = pos - lim;
|
|
|
3958 else
|
|
|
3959 max_pos = min (max_pos, pos - lim);
|
|
|
3960 }
|
|
|
3961 else if (lim > 0)
|
|
|
3962 {
|
|
|
3963 /* Padding specified. Don't let it be more than
|
|
|
3964 * current maximum.
|
|
|
3965 */
|
|
|
3966 lim += pos;
|
|
|
3967 if (max_pos != -1 && lim > max_pos)
|
|
|
3968 lim = max_pos;
|
|
|
3969 /* If that's more padding than already wanted, queue it.
|
|
|
3970 * But don't reduce padding already specified even if
|
|
|
3971 * that is beyond the current truncation point.
|
|
|
3972 */
|
|
|
3973 if (lim > min_pos)
|
|
|
3974 min_pos = lim;
|
|
|
3975 }
|
|
|
3976 goto tail_recurse;
|
|
|
3977 }
|
|
|
3978 else if (STRINGP (car) || CONSP (car))
|
|
|
3979 {
|
|
|
3980 int limit = 50;
|
|
|
3981 /* LIMIT is to protect against circular lists. */
|
|
|
3982 while (CONSP (elt) && --limit > 0
|
|
|
3983 && (pos < max_pos || max_pos == -1))
|
|
|
3984 {
|
|
|
3985 pos = generate_fstring_runes (w, data, pos, pos, max_pos,
|
|
|
3986 XCAR (elt), depth,
|
|
|
3987 max_pixsize, findex, type);
|
|
|
3988 elt = XCDR (elt);
|
|
|
3989 }
|
|
|
3990 }
|
|
|
3991 else if (EXTENTP (car))
|
|
|
3992 {
|
|
|
3993 struct extent *ext = XEXTENT (car);
|
|
|
3994
|
|
|
3995 if (EXTENT_LIVE_P (ext))
|
|
|
3996 {
|
|
|
3997 face_index old_findex = data->findex;
|
|
|
3998 Lisp_Object face;
|
|
|
3999 Lisp_Object font_inst;
|
|
|
4000 face_index new_findex;
|
|
|
4001 Bytecount start = data->bytepos;
|
|
|
4002
|
|
|
4003 face = extent_face (ext);
|
|
|
4004 if (FACEP (face))
|
|
|
4005 {
|
|
|
4006 /* #### needs to merge faces, sigh */
|
|
|
4007 /* #### needs to handle list of faces */
|
|
|
4008 new_findex = get_builtin_face_cache_index (w, face);
|
|
|
4009 /* !!#### not right; needs to compute the max height of
|
|
|
4010 all the charsets */
|
|
|
4011 font_inst = WINDOW_FACE_CACHEL_FONT (w, new_findex,
|
|
|
4012 Vcharset_ascii);
|
|
|
4013
|
|
|
4014 data->dl->ascent = max (data->dl->ascent,
|
|
|
4015 XFONT_INSTANCE (font_inst)->ascent);
|
|
|
4016 data->dl->descent = max (data->dl->descent,
|
|
|
4017 XFONT_INSTANCE (font_inst)->
|
|
|
4018 descent);
|
|
|
4019 }
|
|
|
4020 else
|
|
|
4021 new_findex = old_findex;
|
|
|
4022
|
|
|
4023 data->findex = new_findex;
|
|
|
4024 pos = generate_fstring_runes (w, data, pos, pos, max_pos,
|
|
|
4025 XCDR (elt), depth - 1,
|
|
|
4026 max_pixsize, new_findex, type);
|
|
|
4027 data->findex = old_findex;
|
|
|
4028 Dynarr_add (formatted_string_extent_dynarr, ext);
|
|
|
4029 Dynarr_add (formatted_string_extent_start_dynarr, start);
|
|
|
4030 Dynarr_add (formatted_string_extent_end_dynarr, data->bytepos);
|
|
|
4031 }
|
|
|
4032 }
|
|
|
4033 }
|
|
|
4034 else if (GLYPHP (elt))
|
|
|
4035 {
|
|
|
4036 pos = add_glyph_to_fstring_db_runes (data, elt, pos, pos, max_pos);
|
|
|
4037 }
|
|
|
4038 else
|
|
|
4039 {
|
|
|
4040 invalid:
|
|
|
4041 pos =
|
|
|
4042 add_string_to_fstring_db_runes
|
|
|
4043 (data, (CONST Bufbyte *) GETTEXT ("*invalid*"), pos, min_pos,
|
|
|
4044 max_pos);
|
|
|
4045 }
|
|
|
4046
|
|
|
4047 if (min_pos > pos)
|
|
|
4048 {
|
|
|
4049 add_string_to_fstring_db_runes (data, (CONST Bufbyte *) "", pos, min_pos,
|
|
|
4050 -1);
|
|
|
4051 }
|
|
|
4052
|
|
|
4053 return pos;
|
|
|
4054 }
|
|
|
4055
|
|
|
4056 /* The caller is responsible for freeing the returned string. */
|
|
2
|
4057 Bufbyte *
|
|
0
|
4058 generate_formatted_string (struct window *w, Lisp_Object format_str,
|
|
|
4059 Lisp_Object result_str, face_index findex, int type)
|
|
|
4060 {
|
|
|
4061 struct display_line *dl;
|
|
|
4062 struct display_block *db;
|
|
|
4063 int elt = 0;
|
|
|
4064
|
|
|
4065 dl = &formatted_string_display_line;
|
|
|
4066 db = get_display_block_from_line (dl, TEXT);
|
|
|
4067 Dynarr_reset (db->runes);
|
|
|
4068
|
|
|
4069 generate_formatted_string_db (format_str, result_str, w, dl, db, findex, 0,
|
|
|
4070 -1, type);
|
|
|
4071
|
|
|
4072 Dynarr_reset (formatted_string_emchar_dynarr);
|
|
|
4073 while (elt < Dynarr_length (db->runes))
|
|
|
4074 {
|
|
|
4075 if (Dynarr_atp (db->runes, elt)->type == RUNE_CHAR)
|
|
|
4076 Dynarr_add (formatted_string_emchar_dynarr,
|
|
|
4077 Dynarr_atp (db->runes, elt)->object.chr.ch);
|
|
|
4078 elt++;
|
|
|
4079 }
|
|
|
4080
|
|
2
|
4081 return
|
|
|
4082 convert_emchar_string_into_malloced_string
|
|
|
4083 ( Dynarr_atp (formatted_string_emchar_dynarr, 0),
|
|
|
4084 Dynarr_length (formatted_string_emchar_dynarr), 0);
|
|
0
|
4085 }
|
|
|
4086
|
|
|
4087 /* Update just the modeline. Assumes the desired display structs. If
|
|
|
4088 they do not have a modeline block, it does nothing. */
|
|
|
4089 static void
|
|
|
4090 regenerate_modeline (struct window *w)
|
|
|
4091 {
|
|
|
4092 display_line_dynarr *dla = window_display_lines (w, DESIRED_DISP);
|
|
|
4093
|
|
|
4094 if (!Dynarr_length (dla) || !Dynarr_atp (dla, 0)->modeline)
|
|
|
4095 return;
|
|
|
4096 else
|
|
|
4097 {
|
|
|
4098 generate_modeline (w, Dynarr_atp (dla, 0), DESIRED_DISP);
|
|
|
4099 redisplay_update_line (w, 0, 0, 0);
|
|
|
4100 }
|
|
|
4101 }
|
|
|
4102
|
|
|
4103 /* Make sure that modeline display line is present in the given
|
|
|
4104 display structs if the window has a modeline and update that
|
|
|
4105 line. Returns true if a modeline was needed. */
|
|
|
4106 static int
|
|
|
4107 ensure_modeline_generated (struct window *w, int type)
|
|
|
4108 {
|
|
|
4109 int need_modeline;
|
|
|
4110
|
|
|
4111 /* minibuffer windows don't have modelines */
|
|
|
4112 if (MINI_WINDOW_P (w))
|
|
|
4113 need_modeline = 0;
|
|
|
4114 /* windows which haven't had it turned off do */
|
|
|
4115 else if (WINDOW_HAS_MODELINE_P (w))
|
|
|
4116 need_modeline = 1;
|
|
|
4117 /* windows which have it turned off don't have a divider if there is
|
|
|
4118 a horizontal scrollbar */
|
|
|
4119 else if (window_scrollbar_height (w))
|
|
|
4120 need_modeline = 0;
|
|
|
4121 /* and in this case there is none */
|
|
|
4122 else
|
|
|
4123 need_modeline = 1;
|
|
|
4124
|
|
|
4125 if (need_modeline)
|
|
|
4126 {
|
|
|
4127 display_line_dynarr *dla;
|
|
|
4128
|
|
|
4129 dla = window_display_lines (w, type);
|
|
|
4130
|
|
|
4131 /* We don't care if there is a display line which is not
|
|
|
4132 currently a modeline because it is definitely going to become
|
|
|
4133 one if we have gotten to this point. */
|
|
|
4134 if (Dynarr_length (dla) == 0)
|
|
|
4135 {
|
|
|
4136 if (Dynarr_largest (dla) > 0)
|
|
|
4137 {
|
|
|
4138 struct display_line *mlp = Dynarr_atp (dla, 0);
|
|
|
4139 Dynarr_add (dla, *mlp);
|
|
|
4140 }
|
|
|
4141 else
|
|
|
4142 {
|
|
|
4143 struct display_line modeline;
|
|
|
4144 memset (&modeline, 0, sizeof (struct display_line));
|
|
|
4145 Dynarr_add (dla, modeline);
|
|
|
4146 }
|
|
|
4147 }
|
|
|
4148
|
|
|
4149 /* If we're adding a new place marker go ahead and generate the
|
|
|
4150 modeline so that it is available for use by
|
|
|
4151 window_modeline_height. */
|
|
|
4152 generate_modeline (w, Dynarr_atp (dla, 0), type);
|
|
|
4153 }
|
|
|
4154
|
|
|
4155 return need_modeline;
|
|
|
4156 }
|
|
|
4157
|
|
|
4158 /* #### Kludge or not a kludge. I tend towards the former. */
|
|
|
4159 int
|
|
|
4160 real_current_modeline_height (struct window *w)
|
|
|
4161 {
|
|
|
4162 Fset_marker (w->start[CMOTION_DISP], w->start[CURRENT_DISP], w->buffer);
|
|
2
|
4163 Fset_marker (w->pointm[CMOTION_DISP], w->pointm[CURRENT_DISP], w->buffer);
|
|
0
|
4164
|
|
|
4165 if (ensure_modeline_generated (w, CMOTION_DISP))
|
|
|
4166 {
|
|
|
4167 display_line_dynarr *dla;
|
|
|
4168
|
|
|
4169 dla = window_display_lines (w, CMOTION_DISP);
|
|
|
4170
|
|
|
4171 if (Dynarr_length (dla))
|
|
|
4172 {
|
|
|
4173 if (Dynarr_atp (dla, 0)->modeline)
|
|
|
4174 return (Dynarr_atp (dla, 0)->ascent +
|
|
|
4175 Dynarr_atp (dla, 0)->descent);
|
|
|
4176 else
|
|
|
4177 return 0;
|
|
|
4178 }
|
|
|
4179 else
|
|
|
4180 return 0;
|
|
|
4181 }
|
|
|
4182 else
|
|
|
4183 return 0;
|
|
|
4184 }
|
|
|
4185
|
|
|
4186
|
|
|
4187 /***************************************************************************/
|
|
|
4188 /* */
|
|
|
4189 /* window-regeneration routines */
|
|
|
4190 /* */
|
|
|
4191 /***************************************************************************/
|
|
|
4192
|
|
|
4193 /* For a given window and starting position in the buffer it contains,
|
|
|
4194 ensure that the TYPE display lines accurately represent the
|
|
|
4195 presentation of the window. We pass the buffer instead of getting
|
|
|
4196 it from the window since redisplay_window may have temporarily
|
|
|
4197 changed it to the echo area buffer. */
|
|
|
4198
|
|
|
4199 static void
|
|
|
4200 regenerate_window (struct window *w, Bufpos start_pos, Bufpos point, int type)
|
|
|
4201 {
|
|
|
4202 struct frame *f = XFRAME (w->frame);
|
|
|
4203 struct buffer *b = XBUFFER (w->buffer);
|
|
|
4204 int ypos = WINDOW_TEXT_TOP (w);
|
|
|
4205 int yend; /* set farther down */
|
|
|
4206
|
|
|
4207 prop_block_dynarr *prop;
|
|
|
4208 layout_bounds bounds;
|
|
|
4209 display_line_dynarr *dla;
|
|
|
4210 int need_modeline;
|
|
|
4211
|
|
|
4212 /* The lines had better exist by this point. */
|
|
|
4213 if (!(dla = window_display_lines (w, type)))
|
|
|
4214 abort ();
|
|
|
4215 Dynarr_reset (dla);
|
|
|
4216 w->max_line_len = 0;
|
|
|
4217
|
|
|
4218 /* Normally these get updated in redisplay_window but it is possible
|
|
|
4219 for this function to get called from some other points where that
|
|
|
4220 update may not have occurred. This acts as a safety check. */
|
|
|
4221 if (!Dynarr_length (w->face_cachels))
|
|
|
4222 reset_face_cachels (w);
|
|
|
4223 if (!Dynarr_length (w->glyph_cachels))
|
|
|
4224 reset_glyph_cachels (w);
|
|
|
4225
|
|
|
4226 Fset_marker (w->start[type], make_int (start_pos), w->buffer);
|
|
|
4227 Fset_marker (w->pointm[type], make_int (point), w->buffer);
|
|
|
4228 w->last_point_x[type] = -1;
|
|
|
4229 w->last_point_y[type] = -1;
|
|
|
4230
|
|
|
4231 /* Make sure a modeline is in the structs if needed. */
|
|
|
4232 need_modeline = ensure_modeline_generated (w, type);
|
|
|
4233
|
|
|
4234 /* Wait until here to set this so that the structs have a modeline
|
|
|
4235 generated in the case where one didn't exist. */
|
|
|
4236 yend = WINDOW_TEXT_BOTTOM (w);
|
|
|
4237
|
|
|
4238 bounds = calculate_display_line_boundaries (w, 0);
|
|
|
4239
|
|
110
|
4240 /* 97/3/14 jhod: stuff added here to support pre-prompts (used for input systems) */
|
|
0
|
4241 if (MINI_WINDOW_P (w)
|
|
110
|
4242 && (!NILP (Vminibuf_prompt) || !NILP (Vminibuf_preprompt))
|
|
0
|
4243 && !echo_area_active (f)
|
|
|
4244 && start_pos == BUF_BEGV (b))
|
|
|
4245 {
|
|
|
4246 struct prop_block pb;
|
|
110
|
4247 Lisp_Object string;
|
|
0
|
4248 prop = Dynarr_new (struct prop_block);
|
|
|
4249
|
|
110
|
4250 string = concat2(Vminibuf_preprompt, Vminibuf_prompt);
|
|
0
|
4251 pb.type = PROP_MINIBUF_PROMPT;
|
|
110
|
4252 pb.data.p_string.str = XSTRING_DATA(string);
|
|
|
4253 pb.data.p_string.len = XSTRING_LENGTH(string);
|
|
0
|
4254 Dynarr_add (prop, pb);
|
|
|
4255 }
|
|
|
4256 else
|
|
|
4257 prop = 0;
|
|
|
4258
|
|
|
4259 while (ypos < yend)
|
|
|
4260 {
|
|
|
4261 struct display_line dl;
|
|
|
4262 struct display_line *dlp;
|
|
|
4263 int local;
|
|
|
4264
|
|
|
4265 if (Dynarr_length (dla) < Dynarr_largest (dla))
|
|
|
4266 {
|
|
|
4267 dlp = Dynarr_atp (dla, Dynarr_length (dla));
|
|
|
4268 local = 0;
|
|
|
4269 }
|
|
|
4270 else
|
|
|
4271 {
|
|
|
4272 dlp = &dl;
|
|
|
4273 memset (dlp, 0, sizeof (struct display_line));
|
|
|
4274 local = 1;
|
|
|
4275 }
|
|
|
4276
|
|
|
4277 dlp->bounds = bounds;
|
|
|
4278 dlp->offset = 0;
|
|
|
4279 start_pos = generate_display_line (w, dlp, 1, start_pos,
|
|
|
4280 w->hscroll, &prop, type);
|
|
|
4281 dlp->ypos = ypos + dlp->ascent;
|
|
|
4282 ypos = dlp->ypos + dlp->descent;
|
|
|
4283
|
|
|
4284 if (ypos > yend)
|
|
|
4285 {
|
|
|
4286 int visible_height = dlp->ascent + dlp->descent;
|
|
|
4287
|
|
|
4288 dlp->clip = (ypos - yend);
|
|
|
4289 visible_height -= dlp->clip;
|
|
|
4290
|
|
|
4291 if (visible_height < VERTICAL_CLIP (w, 1))
|
|
|
4292 {
|
|
|
4293 if (local)
|
|
|
4294 free_display_line (dlp);
|
|
|
4295 break;
|
|
|
4296 }
|
|
|
4297 }
|
|
|
4298 else
|
|
|
4299 dlp->clip = 0;
|
|
|
4300
|
|
|
4301 if (dlp->cursor_elt != -1)
|
|
|
4302 {
|
|
|
4303 /* #### This check is steaming crap. Have to get things
|
|
|
4304 fixed so when create_text_block hits EOB, we're done,
|
|
|
4305 period. */
|
|
|
4306 if (w->last_point_x[type] == -1)
|
|
|
4307 {
|
|
|
4308 w->last_point_x[type] = dlp->cursor_elt;
|
|
|
4309 w->last_point_y[type] = Dynarr_length (dla);
|
|
|
4310 }
|
|
|
4311 else
|
|
|
4312 {
|
|
|
4313 /* #### This means that we've added a cursor at EOB
|
|
|
4314 twice. Yuck oh yuck. */
|
|
|
4315 struct display_block *db =
|
|
|
4316 get_display_block_from_line (dlp, TEXT);
|
|
|
4317
|
|
|
4318 Dynarr_atp (db->runes, dlp->cursor_elt)->cursor_type = NO_CURSOR;
|
|
|
4319 dlp->cursor_elt = -1;
|
|
|
4320 }
|
|
|
4321 }
|
|
|
4322
|
|
|
4323 if (dlp->num_chars > w->max_line_len)
|
|
|
4324 w->max_line_len = dlp->num_chars;
|
|
|
4325
|
|
|
4326 Dynarr_add (dla, *dlp);
|
|
|
4327
|
|
|
4328 /* #### This isn't right, but it is close enough for now. */
|
|
|
4329 w->window_end_pos[type] = start_pos;
|
|
|
4330
|
|
|
4331 /* #### This type of check needs to be done down in the
|
|
|
4332 generate_display_line call. */
|
|
|
4333 if (start_pos > BUF_ZV (b))
|
|
|
4334 break;
|
|
|
4335 }
|
|
|
4336
|
|
|
4337 if (prop)
|
|
110
|
4338 Dynarr_free (prop);
|
|
0
|
4339
|
|
|
4340 /* #### More not quite right, but close enough. */
|
|
|
4341 /* #### Ben sez: apparently window_end_pos[] is measured
|
|
|
4342 as the number of characters between the window end and the
|
|
|
4343 end of the buffer? This seems rather weirdo. What's
|
|
|
4344 the justification for this? */
|
|
|
4345 w->window_end_pos[type] = BUF_Z (b) - w->window_end_pos[type];
|
|
|
4346
|
|
|
4347 if (need_modeline)
|
|
|
4348 {
|
|
|
4349 /* We know that this is the right thing to use because we put it
|
|
|
4350 there when we first started working in this function. */
|
|
|
4351 generate_modeline (w, Dynarr_atp (dla, 0), type);
|
|
|
4352 }
|
|
|
4353 }
|
|
|
4354
|
|
|
4355 #define REGEN_INC_FIND_START_END \
|
|
|
4356 do { \
|
|
|
4357 /* Determine start and end of lines. */ \
|
|
|
4358 if (!Dynarr_length (cdla)) \
|
|
|
4359 return 0; \
|
|
|
4360 else \
|
|
|
4361 { \
|
|
|
4362 if (Dynarr_atp (cdla, 0)->modeline && Dynarr_atp (ddla, 0)->modeline) \
|
|
|
4363 { \
|
|
|
4364 dla_start = 1; \
|
|
|
4365 } \
|
|
|
4366 else if (!Dynarr_atp (cdla, 0)->modeline \
|
|
|
4367 && !Dynarr_atp (ddla, 0)->modeline) \
|
|
|
4368 { \
|
|
|
4369 dla_start = 0; \
|
|
|
4370 } \
|
|
|
4371 else \
|
|
|
4372 abort (); /* structs differ */ \
|
|
|
4373 \
|
|
|
4374 dla_end = Dynarr_length (cdla) - 1; \
|
|
|
4375 } \
|
|
|
4376 \
|
|
|
4377 start_pos = (Dynarr_atp (cdla, dla_start)->bufpos \
|
|
|
4378 + Dynarr_atp (cdla, dla_start)->offset); \
|
|
|
4379 /* If this isn't true, then startp has changed and we need to do a \
|
|
|
4380 full regen. */ \
|
|
|
4381 if (startp != start_pos) \
|
|
|
4382 return 0; \
|
|
|
4383 \
|
|
|
4384 /* Point is outside the visible region so give up. */ \
|
|
|
4385 if (pointm < start_pos) \
|
|
|
4386 return 0; \
|
|
|
4387 \
|
|
|
4388 } while (0)
|
|
|
4389
|
|
|
4390 /* This attempts to incrementally update the display structures. It
|
|
|
4391 returns a boolean indicating success or failure. This function is
|
|
|
4392 very similar to regenerate_window_incrementally and is in fact only
|
|
|
4393 called from that function. However, because of the nature of the
|
|
|
4394 changes it deals with it sometimes makes different assumptions
|
|
|
4395 which can lead to success which are much more difficult to make
|
|
|
4396 when dealing with buffer changes. */
|
|
|
4397
|
|
|
4398 static int
|
|
|
4399 regenerate_window_extents_only_changed (struct window *w, Bufpos startp,
|
|
|
4400 Bufpos pointm,
|
|
|
4401 Charcount beg_unchanged,
|
|
|
4402 Charcount end_unchanged)
|
|
|
4403 {
|
|
|
4404 struct buffer *b = XBUFFER (w->buffer);
|
|
|
4405 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP);
|
|
|
4406 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP);
|
|
|
4407
|
|
|
4408 int dla_start = 0;
|
|
|
4409 int dla_end, line;
|
|
|
4410 int first_line, last_line;
|
|
|
4411 Bufpos start_pos;
|
|
|
4412 /* Don't define this in the loop where it is used because we
|
|
|
4413 definitely want its value to survive between passes. */
|
|
|
4414 prop_block_dynarr *prop = NULL;
|
|
|
4415
|
|
|
4416 /* If we don't have any buffer change recorded but the modiff flag has
|
|
|
4417 been incremented, then fail. I'm not sure of the exact circumstances
|
|
|
4418 under which this can happen, but I believe that it is probably a
|
|
|
4419 reasonable happening. */
|
|
|
4420 if (!point_visible (w, pointm, CURRENT_DISP)
|
|
|
4421 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b))
|
|
|
4422 return 0;
|
|
|
4423
|
|
|
4424 /* If the cursor is moved we attempt to update it. If we succeed we
|
|
|
4425 go ahead and proceed with the optimization attempt. */
|
|
|
4426 if (!EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer)
|
|
|
4427 || pointm != marker_position (w->last_point[CURRENT_DISP]))
|
|
|
4428 {
|
|
|
4429 struct frame *f = XFRAME (w->frame);
|
|
|
4430 struct device *d = XDEVICE (f->device);
|
|
|
4431 struct frame *sel_f = device_selected_frame (d);
|
|
|
4432 int success = 0;
|
|
|
4433
|
|
|
4434 if (w->last_point_x[CURRENT_DISP] != -1
|
|
|
4435 && w->last_point_y[CURRENT_DISP] != -1)
|
|
|
4436 {
|
|
|
4437
|
|
|
4438 if (redisplay_move_cursor (w, pointm, WINDOW_TTY_P (w)))
|
|
|
4439 {
|
|
|
4440 /* Always regenerate the modeline in case it is
|
|
|
4441 displaying the current line or column. */
|
|
|
4442 regenerate_modeline (w);
|
|
|
4443 success = 1;
|
|
|
4444 }
|
|
|
4445 }
|
|
|
4446 else if (w != XWINDOW (FRAME_SELECTED_WINDOW (sel_f)))
|
|
|
4447 {
|
|
|
4448 if (f->modeline_changed)
|
|
|
4449 regenerate_modeline (w);
|
|
|
4450 success = 1;
|
|
|
4451 }
|
|
|
4452
|
|
|
4453 if (!success)
|
|
|
4454 return 0;
|
|
|
4455 }
|
|
|
4456
|
|
|
4457 if (beg_unchanged == -1 && end_unchanged == -1)
|
|
|
4458 return 1;
|
|
|
4459
|
|
|
4460 /* assert: There are no buffer modifications or they are all below the
|
|
|
4461 visible region. We assume that regenerate_window_incrementally has
|
|
|
4462 not called us unless this is true. */
|
|
|
4463
|
|
|
4464 REGEN_INC_FIND_START_END;
|
|
|
4465
|
|
|
4466 /* If the changed are starts before the visible area, give up. */
|
|
|
4467 if (beg_unchanged < startp)
|
|
|
4468 return 0;
|
|
|
4469
|
|
|
4470 /* Find what display line the extent changes first affect. */
|
|
|
4471 line = dla_start;
|
|
|
4472 while (line <= dla_end)
|
|
|
4473 {
|
|
|
4474 struct display_line *dl = Dynarr_atp (cdla, line);
|
|
|
4475 Bufpos lstart = dl->bufpos + dl->offset;
|
|
|
4476 Bufpos lend = dl->end_bufpos + dl->offset;
|
|
|
4477
|
|
|
4478 if (beg_unchanged >= lstart && beg_unchanged <= lend)
|
|
|
4479 break;
|
|
|
4480
|
|
|
4481 line++;
|
|
|
4482 }
|
|
|
4483
|
|
|
4484 /* If the changes are below the visible area then if point hasn't
|
|
|
4485 moved return success otherwise fail in order to be safe. */
|
|
|
4486 if (line > dla_end)
|
|
|
4487 {
|
|
|
4488 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer)
|
|
|
4489 && pointm == marker_position (w->last_point[CURRENT_DISP]))
|
|
|
4490 return 1;
|
|
|
4491 else
|
|
|
4492 return 0;
|
|
|
4493 }
|
|
|
4494
|
|
|
4495 /* At this point we know what line the changes first affect. We now
|
|
|
4496 begin redrawing lines as long as we are still in the affected
|
|
|
4497 region and the line's size and positioning don't change.
|
|
|
4498 Otherwise we fail. If we fail we will have altered the desired
|
|
|
4499 structs which could lead to an assertion failure. However, if we
|
|
|
4500 fail the next thing that is going to happen is a full regen so we
|
|
|
4501 will actually end up being safe. */
|
|
|
4502 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b));
|
|
|
4503 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b));
|
|
|
4504 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer);
|
|
|
4505 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer);
|
|
|
4506
|
|
|
4507 first_line = last_line = line;
|
|
|
4508 while (line <= dla_end)
|
|
|
4509 {
|
|
|
4510 Bufpos old_start, old_end, new_start;
|
|
|
4511 struct display_line *cdl = Dynarr_atp (cdla, line);
|
|
|
4512 struct display_line *ddl = Dynarr_atp (ddla, line);
|
|
|
4513 struct display_block *db;
|
|
|
4514 int initial_size;
|
|
|
4515
|
|
|
4516 assert (cdl->bufpos == ddl->bufpos);
|
|
|
4517 assert (cdl->end_bufpos == ddl->end_bufpos);
|
|
|
4518 assert (cdl->offset == ddl->offset);
|
|
|
4519
|
|
|
4520 db = get_display_block_from_line (ddl, TEXT);
|
|
|
4521 initial_size = Dynarr_length (db->runes);
|
|
|
4522 old_start = ddl->bufpos + ddl->offset;
|
|
|
4523 old_end = ddl->end_bufpos + ddl->offset;
|
|
|
4524
|
|
|
4525 /* If this is the first line being updated and it used
|
|
|
4526 propagation data, fail. Otherwise we'll be okay because
|
|
|
4527 we'll have the necessary propagation data. */
|
|
|
4528 if (line == first_line && ddl->used_prop_data)
|
|
|
4529 return 0;
|
|
|
4530
|
|
|
4531 new_start = generate_display_line (w, ddl, 0, ddl->bufpos + ddl->offset,
|
|
|
4532 w->hscroll, &prop, DESIRED_DISP);
|
|
|
4533 ddl->offset = 0;
|
|
|
4534
|
|
|
4535 /* #### If there is propagated stuff the fail. We could
|
|
|
4536 probably actually deal with this if the line had propagated
|
|
|
4537 information when originally created by a full
|
|
|
4538 regeneration. */
|
|
|
4539 if (prop)
|
|
|
4540 {
|
|
|
4541 Dynarr_free (prop);
|
|
|
4542 return 0;
|
|
|
4543 }
|
|
|
4544
|
|
|
4545 /* If any line position parameters have changed or a
|
|
|
4546 cursor has disappeared or disappeared, fail. */
|
|
|
4547 db = get_display_block_from_line (ddl, TEXT);
|
|
|
4548 if (cdl->ypos != ddl->ypos
|
|
|
4549 || cdl->ascent != ddl->ascent
|
|
|
4550 || cdl->descent != ddl->descent
|
|
|
4551 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1)
|
|
|
4552 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1)
|
|
|
4553 || old_start != ddl->bufpos
|
|
|
4554 || old_end != ddl->end_bufpos
|
|
|
4555 || initial_size != Dynarr_length (db->runes))
|
|
|
4556 {
|
|
|
4557 return 0;
|
|
|
4558 }
|
|
|
4559
|
|
|
4560 if (ddl->cursor_elt != -1)
|
|
|
4561 {
|
|
|
4562 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt;
|
|
|
4563 w->last_point_y[DESIRED_DISP] = line;
|
|
|
4564 }
|
|
|
4565
|
|
|
4566 last_line = line;
|
|
|
4567
|
|
|
4568 /* If the extent changes end on the line we just updated then
|
|
|
4569 we're done. Otherwise go on to the next line. */
|
|
|
4570 if (end_unchanged <= ddl->end_bufpos)
|
|
|
4571 break;
|
|
|
4572 else
|
|
|
4573 line++;
|
|
|
4574 }
|
|
|
4575
|
|
|
4576 redisplay_update_line (w, first_line, last_line, 1);
|
|
|
4577 return 1;
|
|
|
4578 }
|
|
|
4579
|
|
|
4580 /* Attempt to update the display data structures based on knowledge of
|
|
|
4581 the changed region in the buffer. Returns a boolean indicating
|
|
|
4582 success or failure. If this function returns a failure then a
|
|
|
4583 regenerate_window _must_ be performed next in order to maintain
|
|
|
4584 invariants located here. */
|
|
|
4585
|
|
|
4586 static int
|
|
|
4587 regenerate_window_incrementally (struct window *w, Bufpos startp,
|
|
|
4588 Bufpos pointm)
|
|
|
4589 {
|
|
|
4590 struct buffer *b = XBUFFER (w->buffer);
|
|
|
4591 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP);
|
|
|
4592 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP);
|
|
|
4593 Charcount beg_unchanged, end_unchanged;
|
|
|
4594 Charcount extent_beg_unchanged, extent_end_unchanged;
|
|
|
4595
|
|
|
4596 int dla_start = 0;
|
|
|
4597 int dla_end, line;
|
|
|
4598 Bufpos start_pos;
|
|
|
4599
|
|
|
4600 /* If this function is called, the current and desired structures
|
|
|
4601 had better be identical. If they are not, then that is a bug. */
|
|
|
4602 assert (Dynarr_length (cdla) == Dynarr_length (ddla));
|
|
|
4603
|
|
|
4604 /* We don't handle minibuffer windows yet. The minibuffer prompt
|
|
|
4605 screws us up. */
|
|
|
4606 if (MINI_WINDOW_P (w))
|
|
|
4607 return 0;
|
|
|
4608
|
|
|
4609 extent_beg_unchanged = BUF_EXTENT_BEGIN_UNCHANGED (b);
|
|
|
4610 extent_end_unchanged = (BUF_EXTENT_END_UNCHANGED (b) == -1
|
|
|
4611 ? -1
|
|
|
4612 : BUF_Z (b) - BUF_EXTENT_END_UNCHANGED (b));
|
|
|
4613
|
|
|
4614 /* If nothing has changed in the buffer, then make sure point is ok
|
|
|
4615 and succeed. */
|
|
|
4616 if (BUF_BEGIN_UNCHANGED (b) == -1 && BUF_END_UNCHANGED (b) == -1)
|
|
|
4617 return regenerate_window_extents_only_changed (w, startp, pointm,
|
|
|
4618 extent_beg_unchanged,
|
|
|
4619 extent_end_unchanged);
|
|
|
4620
|
|
|
4621 /* We can't deal with deleted newlines. */
|
|
|
4622 if (BUF_NEWLINE_WAS_DELETED (b))
|
|
|
4623 return 0;
|
|
|
4624
|
|
|
4625 beg_unchanged = BUF_BEGIN_UNCHANGED (b);
|
|
|
4626 end_unchanged = (BUF_END_UNCHANGED (b) == -1
|
|
|
4627 ? -1
|
|
|
4628 : BUF_Z (b) - BUF_END_UNCHANGED (b));
|
|
|
4629
|
|
|
4630 REGEN_INC_FIND_START_END;
|
|
|
4631
|
|
|
4632 /* If the changed area starts before the visible area, give up. */
|
|
|
4633 if (beg_unchanged < startp)
|
|
|
4634 return 0;
|
|
|
4635
|
|
|
4636 /* Find what display line the buffer changes first affect. */
|
|
|
4637 line = dla_start;
|
|
|
4638 while (line <= dla_end)
|
|
|
4639 {
|
|
|
4640 struct display_line *dl = Dynarr_atp (cdla, line);
|
|
|
4641 Bufpos lstart = dl->bufpos + dl->offset;
|
|
|
4642 Bufpos lend = dl->end_bufpos + dl->offset;
|
|
|
4643
|
|
|
4644 if (beg_unchanged >= lstart && beg_unchanged <= lend)
|
|
|
4645 break;
|
|
|
4646
|
|
|
4647 line++;
|
|
|
4648 }
|
|
|
4649
|
|
|
4650 /* If the changes are below the visible area then if point hasn't
|
|
|
4651 moved return success otherwise fail in order to be safe. */
|
|
|
4652 if (line > dla_end)
|
|
|
4653 {
|
|
|
4654 return regenerate_window_extents_only_changed (w, startp, pointm,
|
|
|
4655 extent_beg_unchanged,
|
|
|
4656 extent_end_unchanged);
|
|
|
4657 }
|
|
|
4658 else
|
|
|
4659 /* At this point we know what line the changes first affect. We
|
|
|
4660 now redraw that line. If the changes are contained within it
|
|
|
4661 we are going to succeed and can update just that one line.
|
|
|
4662 Otherwise we fail. If we fail we will have altered the desired
|
|
|
4663 structs which could lead to an assertion failure. However, if
|
|
|
4664 we fail the next thing that is going to happen is a full regen
|
|
|
4665 so we will actually end up being safe. */
|
|
|
4666 {
|
|
|
4667 Bufpos new_start;
|
|
|
4668 prop_block_dynarr *prop = NULL;
|
|
|
4669 struct display_line *cdl = Dynarr_atp (cdla, line);
|
|
|
4670 struct display_line *ddl = Dynarr_atp (ddla, line);
|
|
|
4671
|
|
|
4672 assert (cdl->bufpos == ddl->bufpos);
|
|
|
4673 assert (cdl->end_bufpos == ddl->end_bufpos);
|
|
|
4674 assert (cdl->offset == ddl->offset);
|
|
|
4675
|
|
|
4676 /* If the last rune is already a continuation glyph, fail.
|
|
|
4677 #### We should be able to handle this better. */
|
|
|
4678 {
|
|
|
4679 struct display_block *db = get_display_block_from_line (ddl, TEXT);
|
|
|
4680 if (Dynarr_length (db->runes))
|
|
|
4681 {
|
|
|
4682 struct rune *rb =
|
|
|
4683 Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1);
|
|
|
4684
|
|
|
4685 if (rb->type == RUNE_DGLYPH
|
|
|
4686 && EQ (rb->object.dglyph.glyph, Vcontinuation_glyph))
|
|
|
4687 return 0;
|
|
|
4688 }
|
|
|
4689 }
|
|
|
4690
|
|
|
4691 /* If the line was generated using propagation data, fail. */
|
|
|
4692 if (ddl->used_prop_data)
|
|
|
4693 return 0;
|
|
|
4694
|
|
|
4695 new_start = generate_display_line (w, ddl, 0, ddl->bufpos + ddl->offset,
|
|
|
4696 w->hscroll, &prop, DESIRED_DISP);
|
|
|
4697 ddl->offset = 0;
|
|
|
4698
|
|
|
4699 /* If there is propagated stuff then it is pretty much a
|
|
|
4700 guarantee that more than just the one line is affected. */
|
|
|
4701 if (prop)
|
|
|
4702 {
|
|
|
4703 Dynarr_free (prop);
|
|
|
4704 return 0;
|
|
|
4705 }
|
|
|
4706
|
|
|
4707 /* If the last rune is now a continuation glyph, fail. */
|
|
|
4708 {
|
|
|
4709 struct display_block *db = get_display_block_from_line (ddl, TEXT);
|
|
|
4710 if (Dynarr_length (db->runes))
|
|
|
4711 {
|
|
|
4712 struct rune *rb =
|
|
|
4713 Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1);
|
|
|
4714
|
|
|
4715 if (rb->type == RUNE_DGLYPH
|
|
|
4716 && EQ (rb->object.dglyph.glyph, Vcontinuation_glyph))
|
|
|
4717 return 0;
|
|
|
4718 }
|
|
|
4719 }
|
|
|
4720
|
|
|
4721 /* If any line position parameters have changed or a
|
|
|
4722 cursor has disappeared or disappeared, fail. */
|
|
|
4723 if (cdl->ypos != ddl->ypos
|
|
|
4724 || cdl->ascent != ddl->ascent
|
|
|
4725 || cdl->descent != ddl->descent
|
|
|
4726 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1)
|
|
|
4727 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1))
|
|
|
4728 {
|
|
|
4729 return 0;
|
|
|
4730 }
|
|
|
4731
|
|
|
4732 /* If the changed area also ends on this line, then we may be in
|
|
|
4733 business. Update everything and return success. */
|
|
|
4734 if (end_unchanged >= ddl->bufpos && end_unchanged <= ddl->end_bufpos)
|
|
|
4735 {
|
|
|
4736 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b));
|
|
|
4737 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b));
|
|
|
4738 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp),
|
|
|
4739 w->buffer);
|
|
|
4740 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm),
|
|
|
4741 w->buffer);
|
|
|
4742
|
|
|
4743 if (ddl->cursor_elt != -1)
|
|
|
4744 {
|
|
|
4745 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt;
|
|
|
4746 w->last_point_y[DESIRED_DISP] = line;
|
|
|
4747 }
|
|
|
4748
|
|
|
4749 redisplay_update_line (w, line, line, 1);
|
|
|
4750 regenerate_modeline (w);
|
|
|
4751
|
|
|
4752 /* #### For now we just flush the cache until this has been
|
|
|
4753 tested. After that is done, this should correct the
|
|
|
4754 cache directly. */
|
|
|
4755 Dynarr_reset (w->line_start_cache);
|
|
|
4756
|
|
|
4757 /* Adjust the extent changed boundaries to remove any
|
|
|
4758 overlap with the buffer changes since we've just
|
|
|
4759 successfully updated that area. */
|
|
|
4760 if (extent_beg_unchanged != -1
|
|
|
4761 && extent_beg_unchanged >= beg_unchanged
|
|
|
4762 && extent_beg_unchanged < end_unchanged)
|
|
|
4763 extent_beg_unchanged = end_unchanged;
|
|
|
4764
|
|
|
4765 if (extent_end_unchanged != -1
|
|
|
4766 && extent_end_unchanged >= beg_unchanged
|
|
|
4767 && extent_end_unchanged < end_unchanged)
|
|
|
4768 extent_end_unchanged = beg_unchanged - 1;
|
|
|
4769
|
|
|
4770 if (extent_end_unchanged <= extent_beg_unchanged)
|
|
|
4771 extent_beg_unchanged = extent_end_unchanged = -1;
|
|
|
4772
|
|
|
4773 /* This could lead to odd results if it fails, but since the
|
|
|
4774 buffer changes update succeeded this probably will to.
|
|
|
4775 We already know that the extent changes start at or after
|
|
|
4776 the line because we checked before entering the loop. */
|
|
|
4777 if (extent_beg_unchanged != -1
|
|
|
4778 && extent_end_unchanged != -1
|
|
|
4779 && ((extent_beg_unchanged < ddl->bufpos)
|
|
|
4780 || (extent_end_unchanged > ddl->end_bufpos)))
|
|
|
4781 {
|
|
|
4782 return
|
|
|
4783 regenerate_window_extents_only_changed (w, startp, pointm,
|
|
|
4784 extent_beg_unchanged,
|
|
|
4785 extent_end_unchanged);
|
|
|
4786 }
|
|
|
4787 else
|
|
|
4788 return 1;
|
|
|
4789 }
|
|
|
4790 }
|
|
|
4791
|
|
|
4792 /* Oh, well. */
|
|
|
4793 return 0;
|
|
|
4794 }
|
|
|
4795
|
|
|
4796 /* Given a window and a point, update the given display lines such
|
|
70
|
4797 that point is displayed in the middle of the window. */
|
|
|
4798
|
|
|
4799 static void
|
|
0
|
4800 regenerate_window_point_center (struct window *w, Bufpos point, int type)
|
|
|
4801 {
|
|
|
4802 Bufpos startp;
|
|
|
4803
|
|
|
4804 /* We need to make sure that the modeline is generated so that the
|
|
|
4805 window height can be calculated correctly. */
|
|
|
4806 ensure_modeline_generated (w, type);
|
|
|
4807
|
|
|
4808 startp = start_with_line_at_pixpos (w, point, window_half_pixpos (w));
|
|
|
4809 regenerate_window (w, startp, point, type);
|
|
|
4810 Fset_marker (w->start[type], make_int (startp), w->buffer);
|
|
|
4811
|
|
70
|
4812 return;
|
|
0
|
4813 }
|
|
|
4814
|
|
|
4815 /* Given a window and a set of display lines, return a boolean
|
|
|
4816 indicating whether the given point is contained within. */
|
|
|
4817
|
|
|
4818 static int
|
|
|
4819 point_visible (struct window *w, Bufpos point, int type)
|
|
|
4820 {
|
|
|
4821 struct buffer *b = XBUFFER (w->buffer);
|
|
|
4822 display_line_dynarr *dla = window_display_lines (w, type);
|
|
|
4823 int first_line;
|
|
|
4824
|
|
|
4825 if (Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline)
|
|
|
4826 first_line = 1;
|
|
|
4827 else
|
|
|
4828 first_line = 0;
|
|
|
4829
|
|
|
4830 if (Dynarr_length (dla) > first_line)
|
|
|
4831 {
|
|
|
4832 Bufpos start, end;
|
|
|
4833 struct display_line *dl = Dynarr_atp (dla, first_line);
|
|
|
4834
|
|
|
4835 start = dl->bufpos;
|
|
|
4836 end = BUF_Z (b) - w->window_end_pos[type] - 1;
|
|
|
4837
|
|
|
4838 if (point >= start && point <= end)
|
|
|
4839 {
|
|
|
4840 if (!MINI_WINDOW_P (w) && scroll_on_clipped_lines)
|
|
|
4841 {
|
|
|
4842 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1);
|
|
|
4843
|
|
|
4844 if (point >= (dl->bufpos + dl->offset)
|
|
|
4845 && point <= (dl->end_bufpos + dl->offset))
|
|
|
4846 return (!dl->clip);
|
|
|
4847 else
|
|
|
4848 return 1;
|
|
|
4849 }
|
|
|
4850 else
|
|
|
4851 return 1;
|
|
|
4852 }
|
|
|
4853 else
|
|
|
4854 return 0;
|
|
|
4855 }
|
|
|
4856 else
|
|
|
4857 return 0;
|
|
|
4858 }
|
|
|
4859
|
|
|
4860 /* Return pixel position the middle of the window, not including the
|
|
|
4861 modeline and any potential horizontal scrollbar. */
|
|
|
4862
|
|
|
4863 int
|
|
|
4864 window_half_pixpos (struct window *w)
|
|
|
4865 {
|
|
|
4866 return (WINDOW_TEXT_TOP (w) + (WINDOW_TEXT_HEIGHT (w) >> 1));
|
|
|
4867 }
|
|
|
4868
|
|
|
4869 /* Return the display line which is currently in the middle of the
|
|
|
4870 window W for display lines TYPE. */
|
|
|
4871
|
|
|
4872 int
|
|
|
4873 line_at_center (struct window *w, int type, Bufpos start, Bufpos point)
|
|
|
4874 {
|
|
|
4875 display_line_dynarr *dla;
|
|
|
4876 int half;
|
|
|
4877 int elt;
|
|
|
4878 int first_elt = (MINI_WINDOW_P (w) ? 0 : 1);
|
|
|
4879
|
|
|
4880 if (type == CMOTION_DISP)
|
|
|
4881 regenerate_window (w, start, point, type);
|
|
|
4882
|
|
|
4883 dla = window_display_lines (w, type);
|
|
|
4884 half = window_half_pixpos (w);
|
|
|
4885
|
|
|
4886 for (elt = first_elt; elt < Dynarr_length (dla); elt++)
|
|
|
4887 {
|
|
|
4888 struct display_line *dl = Dynarr_atp (dla, elt);
|
|
|
4889 int line_bot = dl->ypos + dl->descent;
|
|
|
4890
|
|
|
4891 if (line_bot > half)
|
|
|
4892 return elt;
|
|
|
4893 }
|
|
|
4894
|
|
|
4895 /* We may not have a line at the middle if the end of the buffer is
|
|
|
4896 being displayed. */
|
|
|
4897 return -1;
|
|
|
4898 }
|
|
|
4899
|
|
|
4900 /* Return a value for point that would place it at the beginning of
|
|
|
4901 the line which is in the middle of the window. */
|
|
|
4902
|
|
|
4903 Bufpos
|
|
|
4904 point_at_center (struct window *w, int type, Bufpos start, Bufpos point)
|
|
|
4905 {
|
|
|
4906 /* line_at_center will regenerate the display structures, if necessary. */
|
|
|
4907 int line = line_at_center (w, type, start, point);
|
|
|
4908
|
|
|
4909 if (line == -1)
|
|
|
4910 return BUF_ZV (XBUFFER (w->buffer));
|
|
|
4911 else
|
|
|
4912 {
|
|
|
4913 display_line_dynarr *dla = window_display_lines (w, type);
|
|
|
4914 struct display_line *dl = Dynarr_atp (dla, line);
|
|
|
4915
|
|
|
4916 return dl->bufpos;
|
|
|
4917 }
|
|
|
4918 }
|
|
|
4919
|
|
|
4920 /* For a given window, ensure that the current visual representation
|
|
|
4921 is accurate. */
|
|
|
4922
|
|
|
4923 static void
|
|
|
4924 redisplay_window (Lisp_Object window, int skip_selected)
|
|
|
4925 {
|
|
|
4926 struct window *w = XWINDOW (window);
|
|
|
4927 struct frame *f = XFRAME (w->frame);
|
|
|
4928 struct device *d = XDEVICE (f->device);
|
|
|
4929 Lisp_Object old_buffer = w->buffer;
|
|
|
4930 struct buffer *b;
|
|
|
4931 int echo_active = 0;
|
|
|
4932 int startp = 1;
|
|
|
4933 int pointm;
|
|
70
|
4934 int selected;
|
|
0
|
4935 int skip_output = 0;
|
|
|
4936 int truncation_changed;
|
|
|
4937 int inactive_minibuffer =
|
|
|
4938 (MINI_WINDOW_P (w) &&
|
|
|
4939 (f != device_selected_frame (d)) &&
|
|
|
4940 !is_surrogate_for_selected_frame (f));
|
|
|
4941
|
|
|
4942 /* #### In the new world this function actually does a bunch of
|
|
|
4943 optimizations such as buffer-based scrolling, but none of that is
|
|
|
4944 implemented yet. */
|
|
|
4945
|
|
|
4946 /* If this is a combination window, do its children; that's all.
|
|
|
4947 The selected window is always a leaf so we don't check for
|
|
|
4948 skip_selected here. */
|
|
|
4949 if (!NILP (w->vchild))
|
|
|
4950 {
|
|
|
4951 redisplay_windows (w->vchild, skip_selected);
|
|
|
4952 return;
|
|
|
4953 }
|
|
|
4954 if (!NILP (w->hchild))
|
|
|
4955 {
|
|
|
4956 redisplay_windows (w->hchild, skip_selected);
|
|
|
4957 return;
|
|
|
4958 }
|
|
|
4959
|
|
|
4960 /* Is this window the selected window on its frame? */
|
|
70
|
4961 selected =
|
|
|
4962 (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d))));
|
|
|
4963 if (skip_selected && selected)
|
|
0
|
4964 return;
|
|
|
4965
|
|
|
4966 /* It is possible that the window is not fully initialized yet. */
|
|
|
4967 if (NILP (w->buffer))
|
|
|
4968 return;
|
|
|
4969
|
|
|
4970 if (MINI_WINDOW_P (w) && echo_area_active (f))
|
|
|
4971 {
|
|
|
4972 w->buffer = Vecho_area_buffer;
|
|
|
4973 echo_active = 1;
|
|
|
4974 }
|
|
|
4975
|
|
|
4976 b = XBUFFER (w->buffer);
|
|
|
4977
|
|
|
4978 if (echo_active)
|
|
|
4979 pointm = 1;
|
|
|
4980 else
|
|
|
4981 {
|
|
70
|
4982 if (selected)
|
|
0
|
4983 {
|
|
|
4984 pointm = BUF_PT (b);
|
|
|
4985 }
|
|
|
4986 else
|
|
|
4987 {
|
|
|
4988 pointm = marker_position (w->pointm[CURRENT_DISP]);
|
|
|
4989
|
|
|
4990 if (pointm < BUF_BEGV (b))
|
|
|
4991 pointm = BUF_BEGV (b);
|
|
|
4992 else if (pointm > BUF_ZV (b))
|
|
|
4993 pointm = BUF_ZV (b);
|
|
|
4994 }
|
|
|
4995 }
|
|
|
4996 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), old_buffer);
|
|
|
4997
|
|
|
4998 /* If the buffer has changed we have to invalid all of our face
|
|
|
4999 cache elements. */
|
|
|
5000 if ((!echo_active && b != window_display_buffer (w))
|
|
|
5001 || !Dynarr_length (w->face_cachels)
|
|
|
5002 || f->faces_changed)
|
|
|
5003 reset_face_cachels (w);
|
|
|
5004 else
|
|
|
5005 mark_face_cachels_as_not_updated (w);
|
|
|
5006
|
|
|
5007 /* Ditto the glyph cache elements. */
|
|
|
5008 if ((!echo_active && b != window_display_buffer (w))
|
|
|
5009 || !Dynarr_length (w->glyph_cachels))
|
|
|
5010 reset_glyph_cachels (w);
|
|
|
5011 else
|
|
|
5012 mark_glyph_cachels_as_not_updated (w);
|
|
|
5013
|
|
|
5014 /* If the marker's buffer is not the window's buffer, then we need
|
|
|
5015 to find a new starting position. */
|
|
|
5016 if (!MINI_WINDOW_P (w)
|
|
|
5017 && !EQ (Fmarker_buffer (w->start[CURRENT_DISP]), w->buffer))
|
|
|
5018 {
|
|
70
|
5019 regenerate_window_point_center (w, pointm, DESIRED_DISP);
|
|
0
|
5020
|
|
|
5021 goto regeneration_done;
|
|
|
5022 }
|
|
|
5023
|
|
|
5024 if (echo_active)
|
|
|
5025 startp = 1;
|
|
|
5026 else
|
|
|
5027 {
|
|
|
5028 startp = marker_position (w->start[CURRENT_DISP]);
|
|
|
5029 if (startp < BUF_BEGV (b))
|
|
|
5030 startp = BUF_BEGV (b);
|
|
|
5031 else if (startp > BUF_ZV (b))
|
|
|
5032 startp = BUF_ZV (b);
|
|
|
5033 }
|
|
|
5034 Fset_marker (w->start[DESIRED_DISP], make_int (startp), old_buffer);
|
|
|
5035
|
|
|
5036 truncation_changed = (find_window_mirror (w)->truncate_win !=
|
|
|
5037 window_truncation_on (w));
|
|
|
5038
|
|
|
5039 /* If w->force_start is set, then some function set w->start and we
|
|
|
5040 should display from there and change point, if necessary, to
|
|
|
5041 ensure that it is visible. */
|
|
|
5042 if (w->force_start || inactive_minibuffer)
|
|
|
5043 {
|
|
|
5044 w->force_start = 0;
|
|
|
5045 w->last_modified[DESIRED_DISP] = Qzero;
|
|
|
5046 w->last_facechange[DESIRED_DISP] = Qzero;
|
|
|
5047
|
|
|
5048 regenerate_window (w, startp, pointm, DESIRED_DISP);
|
|
|
5049
|
|
|
5050 if (!point_visible (w, pointm, DESIRED_DISP) && !inactive_minibuffer)
|
|
|
5051 {
|
|
|
5052 pointm = point_at_center (w, DESIRED_DISP, 0, 0);
|
|
|
5053
|
|
70
|
5054 if (selected)
|
|
0
|
5055 BUF_SET_PT (b, pointm);
|
|
|
5056
|
|
|
5057 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm),
|
|
|
5058 old_buffer);
|
|
|
5059
|
|
|
5060 /* #### BUFU amounts of overkil just to get the cursor
|
|
|
5061 location marked properly. FIX ME FIX ME FIX ME */
|
|
|
5062 regenerate_window (w, startp, pointm, DESIRED_DISP);
|
|
|
5063 }
|
|
|
5064
|
|
|
5065 goto regeneration_done;
|
|
|
5066 }
|
|
|
5067
|
|
|
5068 /* If nothing has changed since the last redisplay, then we just
|
|
|
5069 need to make sure that point is still visible. */
|
|
|
5070 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b)
|
|
|
5071 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b)
|
|
|
5072 && pointm >= startp
|
|
|
5073 /* This check is to make sure we restore the minibuffer after a
|
|
|
5074 temporary change to the echo area. */
|
|
|
5075 && !(MINI_WINDOW_P (w) && f->buffers_changed)
|
|
|
5076 && !f->frame_changed
|
|
|
5077 && !truncation_changed)
|
|
|
5078 {
|
|
|
5079 /* Check if the cursor has actually moved. */
|
|
|
5080 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer)
|
|
|
5081 && pointm == marker_position (w->last_point[CURRENT_DISP])
|
|
70
|
5082 && selected
|
|
0
|
5083 && !w->windows_changed
|
|
|
5084 && !f->clip_changed
|
|
|
5085 && !f->extents_changed
|
|
|
5086 && !f->faces_changed
|
|
|
5087 && !f->point_changed
|
|
|
5088 && !f->windows_structure_changed)
|
|
|
5089 {
|
|
|
5090 /* If not, we're done. */
|
|
|
5091 if (f->modeline_changed)
|
|
|
5092 regenerate_modeline (w);
|
|
|
5093
|
|
|
5094 skip_output = 1;
|
|
|
5095 goto regeneration_done;
|
|
|
5096 }
|
|
|
5097 else
|
|
|
5098 {
|
|
|
5099 /* If the new point is visible in the redisplay structures,
|
|
|
5100 then let the output update routines handle it, otherwise
|
|
|
5101 do things the hard way. */
|
|
|
5102 if (!w->windows_changed
|
|
|
5103 && !f->clip_changed
|
|
|
5104 && !f->extents_changed
|
|
|
5105 && !f->faces_changed
|
|
|
5106 && !f->windows_structure_changed)
|
|
|
5107 {
|
|
|
5108 if (point_visible (w, pointm, CURRENT_DISP)
|
|
|
5109 && w->last_point_x[CURRENT_DISP] != -1
|
|
|
5110 && w->last_point_y[CURRENT_DISP] != -1)
|
|
|
5111 {
|
|
|
5112 if (redisplay_move_cursor (w, pointm, FRAME_TTY_P (f)))
|
|
|
5113 {
|
|
|
5114 /* Always regenerate in case it is displaying
|
|
|
5115 the current line or column. */
|
|
|
5116 regenerate_modeline (w);
|
|
|
5117
|
|
|
5118 skip_output = 1;
|
|
|
5119 goto regeneration_done;
|
|
|
5120 }
|
|
|
5121 }
|
|
70
|
5122 else if (!selected && !f->point_changed)
|
|
0
|
5123 {
|
|
|
5124 if (f->modeline_changed)
|
|
|
5125 regenerate_modeline (w);
|
|
|
5126
|
|
|
5127 skip_output = 1;
|
|
|
5128 goto regeneration_done;
|
|
|
5129 }
|
|
|
5130 }
|
|
|
5131
|
|
|
5132 /* If we weren't able to take the shortcut method, then use
|
|
|
5133 the brute force method. */
|
|
|
5134 regenerate_window (w, startp, pointm, DESIRED_DISP);
|
|
|
5135
|
|
|
5136 if (point_visible (w, pointm, DESIRED_DISP))
|
|
|
5137 goto regeneration_done;
|
|
|
5138 }
|
|
|
5139 }
|
|
|
5140
|
|
|
5141 /* Check if the starting point is no longer at the beginning of a
|
|
|
5142 line, in which case find a new starting point. We also recenter
|
|
|
5143 if our start position is equal to point-max. Otherwise we'll end
|
|
|
5144 up with a blank window. */
|
|
|
5145 else if (((w->start_at_line_beg || MINI_WINDOW_P (w))
|
|
|
5146 && !(startp == BUF_BEGV (b)
|
|
|
5147 || BUF_FETCH_CHAR (b, startp - 1) == '\n'))
|
|
|
5148 || (pointm == startp &&
|
|
|
5149 EQ (Fmarker_buffer (w->last_start[CURRENT_DISP]), w->buffer) &&
|
|
|
5150 startp < marker_position (w->last_start[CURRENT_DISP]))
|
|
|
5151 || (startp == BUF_ZV (b)))
|
|
|
5152 {
|
|
70
|
5153 regenerate_window_point_center (w, pointm, DESIRED_DISP);
|
|
0
|
5154
|
|
|
5155 goto regeneration_done;
|
|
|
5156 }
|
|
|
5157 /* See if we can update the data structures locally based on
|
|
|
5158 knowledge of what changed in the buffer. */
|
|
|
5159 else if (!w->windows_changed
|
|
|
5160 && !f->clip_changed
|
|
|
5161 && !f->faces_changed
|
|
|
5162 && !f->windows_structure_changed
|
|
|
5163 && !f->frame_changed
|
|
|
5164 && !truncation_changed
|
|
|
5165 && pointm >= startp
|
|
|
5166 && regenerate_window_incrementally (w, startp, pointm))
|
|
|
5167 {
|
|
|
5168 if (f->modeline_changed
|
|
|
5169 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b)
|
|
|
5170 || XINT (w->last_facechange[CURRENT_DISP]) < BUF_FACECHANGE (b))
|
|
|
5171 regenerate_modeline (w);
|
|
|
5172
|
|
|
5173 skip_output = 1;
|
|
|
5174 goto regeneration_done;
|
|
|
5175 }
|
|
|
5176 /* #### This is where a check for structure based scrolling would go. */
|
|
|
5177 /* If all else fails, try just regenerating and see what happens. */
|
|
|
5178 else
|
|
|
5179 {
|
|
|
5180 regenerate_window (w, startp, pointm, DESIRED_DISP);
|
|
|
5181
|
|
|
5182 if (point_visible (w, pointm, DESIRED_DISP))
|
|
|
5183 goto regeneration_done;
|
|
|
5184 }
|
|
|
5185
|
|
|
5186 /* We still haven't gotten the window regenerated with point
|
|
|
5187 visible. Next we try scrolling a little and see if point comes
|
|
|
5188 back onto the screen. */
|
|
|
5189 if (scroll_step)
|
|
|
5190 {
|
|
70
|
5191 Bufpos bufpos;
|
|
|
5192
|
|
|
5193 bufpos = vmotion (w, startp,
|
|
0
|
5194 (pointm < startp) ? -scroll_step : scroll_step, 0);
|
|
70
|
5195 regenerate_window (w, bufpos, pointm, DESIRED_DISP);
|
|
0
|
5196
|
|
|
5197 if (point_visible (w, pointm, DESIRED_DISP))
|
|
|
5198 goto regeneration_done;
|
|
|
5199 }
|
|
|
5200
|
|
|
5201 /* We still haven't managed to get the screen drawn with point on
|
|
|
5202 the screen, so just center it and be done with it. */
|
|
70
|
5203 regenerate_window_point_center (w, pointm, DESIRED_DISP);
|
|
0
|
5204
|
|
|
5205
|
|
|
5206 regeneration_done:
|
|
|
5207
|
|
|
5208 /* If the window's frame is changed then reset the current display
|
|
|
5209 lines in order to force a full repaint. */
|
|
|
5210 if (f->frame_changed)
|
|
|
5211 {
|
|
|
5212 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP);
|
|
|
5213
|
|
|
5214 Dynarr_reset (cla);
|
|
|
5215 }
|
|
|
5216
|
|
|
5217 /* Must do this before calling redisplay_output_window because it
|
|
|
5218 sets some markers on the window. */
|
|
|
5219 if (MINI_WINDOW_P (w) && echo_area_active (f))
|
|
|
5220 w->buffer = old_buffer;
|
|
|
5221
|
|
|
5222 /* These also have to be set before calling redisplay_output_window
|
|
|
5223 since it sets the CURRENT_DISP values based on them. */
|
|
|
5224 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b));
|
|
|
5225 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b));
|
|
|
5226 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer);
|
|
|
5227 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer);
|
|
|
5228
|
|
|
5229 if (!skip_output)
|
|
|
5230 {
|
|
|
5231 Bufpos start = marker_position (w->start[DESIRED_DISP]);
|
|
|
5232 Bufpos end = (w->window_end_pos[DESIRED_DISP] == -1
|
|
|
5233 ? BUF_ZV (b)
|
|
|
5234 : BUF_Z (b) - w->window_end_pos[DESIRED_DISP] - 1);
|
|
|
5235
|
|
|
5236 update_line_start_cache (w, start, end, pointm, 1);
|
|
|
5237 redisplay_output_window (w);
|
|
|
5238 }
|
|
|
5239
|
|
|
5240 /* #### This should be dependent on face changes and will need to be
|
|
|
5241 somewhere else once tty updates occur on a per-frame basis. */
|
|
|
5242 mark_face_cachels_as_clean (w);
|
|
|
5243
|
|
|
5244 w->windows_changed = 0;
|
|
|
5245 }
|
|
|
5246
|
|
|
5247 /* Call buffer_reset_changes for all buffers present in any window
|
|
|
5248 currently visible in all frames on all devices. #### There has to
|
|
|
5249 be a better way to do this. */
|
|
|
5250
|
|
|
5251 static int
|
|
|
5252 reset_buffer_changes_mapfun (struct window *w, void *ignored_closure)
|
|
|
5253 {
|
|
|
5254 buffer_reset_changes (XBUFFER (w->buffer));
|
|
|
5255 return 0;
|
|
|
5256 }
|
|
|
5257
|
|
|
5258 static void
|
|
|
5259 reset_buffer_changes (void)
|
|
|
5260 {
|
|
|
5261 Lisp_Object frmcons, devcons, concons;
|
|
|
5262
|
|
|
5263 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
5264 {
|
|
|
5265 struct frame *f = XFRAME (XCAR (frmcons));
|
|
|
5266
|
|
108
|
5267 if (FRAME_REPAINT_P (f))
|
|
0
|
5268 map_windows (f, reset_buffer_changes_mapfun, 0);
|
|
|
5269 }
|
|
|
5270 }
|
|
|
5271
|
|
|
5272 /* Ensure that all windows underneath the given window in the window
|
|
|
5273 hierarchy are correctly displayed. */
|
|
|
5274
|
|
|
5275 static void
|
|
|
5276 redisplay_windows (Lisp_Object window, int skip_selected)
|
|
|
5277 {
|
|
|
5278 for (; !NILP (window) ; window = XWINDOW (window)->next)
|
|
|
5279 {
|
|
|
5280 redisplay_window (window, skip_selected);
|
|
|
5281 }
|
|
|
5282 }
|
|
|
5283
|
|
|
5284 static int
|
|
|
5285 call_redisplay_end_triggers (struct window *w, void *closure)
|
|
|
5286 {
|
|
|
5287 Bufpos lrpos = w->last_redisplay_pos;
|
|
|
5288 w->last_redisplay_pos = 0;
|
|
|
5289 if (!NILP (w->buffer)
|
|
|
5290 && !NILP (w->redisplay_end_trigger)
|
|
|
5291 && lrpos > 0)
|
|
|
5292 {
|
|
|
5293 Bufpos pos;
|
|
|
5294
|
|
|
5295 if (MARKERP (w->redisplay_end_trigger)
|
|
|
5296 && XMARKER (w->redisplay_end_trigger)->buffer != 0)
|
|
|
5297 pos = marker_position (w->redisplay_end_trigger);
|
|
|
5298 else if (INTP (w->redisplay_end_trigger))
|
|
|
5299 pos = XINT (w->redisplay_end_trigger);
|
|
|
5300 else
|
|
|
5301 {
|
|
|
5302 w->redisplay_end_trigger = Qnil;
|
|
|
5303 return 0;
|
|
|
5304 }
|
|
|
5305
|
|
|
5306 if (lrpos >= pos)
|
|
|
5307 {
|
|
|
5308 Lisp_Object window = Qnil;
|
|
|
5309 XSETWINDOW (window, w);
|
|
|
5310 va_run_hook_with_args_in_buffer (XBUFFER (w->buffer),
|
|
|
5311 Qredisplay_end_trigger_functions,
|
|
|
5312 2, window,
|
|
|
5313 w->redisplay_end_trigger);
|
|
|
5314 w->redisplay_end_trigger = Qnil;
|
|
|
5315 }
|
|
|
5316 }
|
|
|
5317
|
|
|
5318 return 0;
|
|
|
5319 }
|
|
|
5320
|
|
|
5321 /* Ensure that all windows on the given frame are correctly displayed. */
|
|
|
5322
|
|
|
5323 static int
|
|
|
5324 redisplay_frame (struct frame *f, int preemption_check)
|
|
|
5325 {
|
|
|
5326 struct device *d = XDEVICE (f->device);
|
|
|
5327
|
|
|
5328 if (preemption_check)
|
|
|
5329 {
|
|
|
5330 /* The preemption check itself takes a lot of time,
|
|
|
5331 so normally don't do it here. We do it if called
|
|
|
5332 from Lisp, though (`redisplay-frame'). */
|
|
|
5333 int preempted;
|
|
|
5334
|
|
|
5335 REDISPLAY_PREEMPTION_CHECK;
|
|
|
5336 if (preempted)
|
|
|
5337 return 1;
|
|
|
5338 }
|
|
|
5339
|
|
|
5340 /* Before we put a hold on frame size changes, attempt to process
|
|
|
5341 any which are already pending. */
|
|
|
5342 if (f->size_change_pending)
|
|
|
5343 change_frame_size (f, f->new_height, f->new_width, 0);
|
|
|
5344
|
|
|
5345 /* The menubar, toolbar, and icon updates must be done before
|
|
|
5346 hold_frame_size_changes is called and we are officially
|
|
|
5347 'in_display'. They may eval lisp code which may call Fsignal.
|
|
|
5348 If in_display is set Fsignal will abort. */
|
|
|
5349
|
|
|
5350 #ifdef HAVE_MENUBARS
|
|
|
5351 /* Update the menubar. It is done first since it could change
|
|
|
5352 the menubar's visibility. This way we avoid having flashing
|
|
|
5353 caused by an Expose event generated by the visibility change
|
|
|
5354 being handled. */
|
|
|
5355 update_frame_menubars (f);
|
|
|
5356 #endif
|
|
|
5357
|
|
|
5358 #ifdef HAVE_TOOLBARS
|
|
|
5359 /* Update the toolbars. */
|
|
|
5360 update_frame_toolbars (f);
|
|
|
5361 #endif
|
|
|
5362
|
|
|
5363 hold_frame_size_changes ();
|
|
|
5364
|
|
|
5365 /* ----------------- BEGIN CRITICAL REDISPLAY SECTION ---------------- */
|
|
|
5366 /* Within this section, we are defenseless and assume that the
|
|
|
5367 following cannot happen:
|
|
|
5368
|
|
|
5369 1) garbage collection
|
|
|
5370 2) Lisp code evaluation
|
|
|
5371 3) frame size changes
|
|
|
5372
|
|
|
5373 We ensure (3) by calling hold_frame_size_changes(), which
|
|
|
5374 will cause any pending frame size changes to get put on hold
|
|
|
5375 till after the end of the critical section. (1) follows
|
|
|
5376 automatically if (2) is met. #### Unfortunately, there are
|
|
|
5377 some places where Lisp code can be called within this section.
|
|
|
5378 We need to remove them.
|
|
|
5379
|
|
|
5380 If Fsignal() is called during this critical section, we
|
|
|
5381 will abort().
|
|
|
5382
|
|
|
5383 If garbage collection is called during this critical section,
|
|
|
5384 we simply return. #### We should abort instead.
|
|
|
5385
|
|
|
5386 #### If a frame-size change does occur we should probably
|
|
|
5387 actually be preempting redisplay. */
|
|
|
5388
|
|
|
5389 /* If we clear the frame we have to force its contents to be redrawn. */
|
|
|
5390 if (f->clear)
|
|
|
5391 f->frame_changed = 1;
|
|
|
5392
|
|
|
5393 /* Erase the frame before outputting its contents. */
|
|
|
5394 if (f->clear)
|
|
|
5395 DEVMETH (d, clear_frame, (f));
|
|
|
5396
|
|
|
5397 /* Do the selected window first. */
|
|
|
5398 redisplay_window (FRAME_SELECTED_WINDOW (f), 0);
|
|
|
5399
|
|
|
5400 /* Then do the rest. */
|
|
|
5401 redisplay_windows (f->root_window, 1);
|
|
|
5402
|
|
|
5403 /* We now call the output_end routine for tty frames. We delay
|
|
|
5404 doing so in order to avoid cursor flicker. So much for 100%
|
|
|
5405 encapsulation. */
|
|
|
5406 if (FRAME_TTY_P (f))
|
|
|
5407 DEVMETH (d, output_end, (d));
|
|
|
5408
|
|
|
5409 update_frame_title (f);
|
|
|
5410
|
|
|
5411 f->buffers_changed = 0;
|
|
|
5412 f->clip_changed = 0;
|
|
|
5413 f->extents_changed = 0;
|
|
|
5414 f->faces_changed = 0;
|
|
|
5415 f->frame_changed = 0;
|
|
|
5416 f->icon_changed = 0;
|
|
|
5417 f->menubar_changed = 0;
|
|
|
5418 f->modeline_changed = 0;
|
|
|
5419 f->point_changed = 0;
|
|
|
5420 f->toolbar_changed = 0;
|
|
|
5421 f->windows_changed = 0;
|
|
|
5422 f->windows_structure_changed = 0;
|
|
|
5423 f->window_face_cache_reset = 0;
|
|
|
5424
|
|
|
5425 f->clear = 0;
|
|
|
5426
|
|
|
5427 if (!f->size_change_pending)
|
|
|
5428 f->size_changed = 0;
|
|
|
5429
|
|
|
5430 /* ----------------- END CRITICAL REDISPLAY SECTION ---------------- */
|
|
|
5431
|
|
|
5432 /* Allow frame size changes to occur again.
|
|
|
5433
|
|
|
5434 #### what happens if changes to other frames happen? */
|
|
|
5435 unhold_one_frame_size_changes (f);
|
|
|
5436
|
|
|
5437 map_windows (f, call_redisplay_end_triggers, 0);
|
|
|
5438 return 0;
|
|
|
5439 }
|
|
|
5440
|
|
|
5441 /* Ensure that all frames on the given device are correctly displayed. */
|
|
|
5442
|
|
|
5443 static int
|
|
|
5444 redisplay_device (struct device *d)
|
|
|
5445 {
|
|
|
5446 Lisp_Object frame, frmcons;
|
|
|
5447 int preempted = 0;
|
|
|
5448 int size_change_failed = 0;
|
|
|
5449 struct frame *f;
|
|
|
5450
|
|
|
5451 if (DEVICE_STREAM_P (d)) /* nothing to do */
|
|
|
5452 return 0;
|
|
|
5453
|
|
|
5454 /* It is possible that redisplay has been called before the
|
|
|
5455 device is fully initialized. If so then continue with the
|
|
|
5456 next device. */
|
|
|
5457 if (NILP (DEVICE_SELECTED_FRAME (d)))
|
|
|
5458 return 0;
|
|
|
5459
|
|
|
5460 REDISPLAY_PREEMPTION_CHECK;
|
|
|
5461 if (preempted)
|
|
|
5462 return 1;
|
|
|
5463
|
|
|
5464 /* Always do the selected frame first. */
|
|
|
5465 frame = DEVICE_SELECTED_FRAME (d);
|
|
|
5466
|
|
|
5467 f = XFRAME (frame);
|
|
|
5468
|
|
|
5469 if (f->icon_changed || f->windows_changed)
|
|
|
5470 update_frame_icon (f);
|
|
|
5471
|
|
108
|
5472 if (FRAME_REPAINT_P (f))
|
|
0
|
5473 {
|
|
|
5474 if (f->buffers_changed || f->clip_changed || f->extents_changed
|
|
|
5475 || f->faces_changed || f->frame_changed || f->menubar_changed
|
|
|
5476 || f->modeline_changed || f->point_changed || f->size_changed
|
|
|
5477 || f->toolbar_changed || f->windows_changed
|
|
|
5478 || f->windows_structure_changed)
|
|
|
5479 {
|
|
|
5480 preempted = redisplay_frame (f, 0);
|
|
|
5481 }
|
|
|
5482
|
|
|
5483 if (preempted)
|
|
|
5484 return 1;
|
|
|
5485
|
|
|
5486 /* If the frame redisplay did not get preempted, then this flag
|
|
|
5487 should have gotten set to 0. It might be possible for that
|
|
|
5488 not to happen if a size change event were to occur at an odd
|
|
|
5489 time. To make sure we don't miss anything we simply don't
|
|
|
5490 reset the top level flags until the condition ends up being
|
|
|
5491 in the right state. */
|
|
|
5492 if (f->size_changed)
|
|
|
5493 size_change_failed = 1;
|
|
|
5494 }
|
|
|
5495
|
|
|
5496 DEVICE_FRAME_LOOP (frmcons, d)
|
|
|
5497 {
|
|
|
5498 f = XFRAME (XCAR (frmcons));
|
|
|
5499
|
|
|
5500 if (f == XFRAME (DEVICE_SELECTED_FRAME (d)))
|
|
|
5501 continue;
|
|
|
5502
|
|
|
5503 if (f->icon_changed || f->windows_changed)
|
|
|
5504 update_frame_icon (f);
|
|
|
5505
|
|
108
|
5506 if (FRAME_REPAINT_P (f))
|
|
0
|
5507 {
|
|
|
5508 if (f->buffers_changed || f->clip_changed || f->extents_changed
|
|
|
5509 || f->faces_changed || f->frame_changed || f->menubar_changed
|
|
|
5510 || f->modeline_changed || f->point_changed || f->size_changed
|
|
|
5511 || f->toolbar_changed || f->windows_changed
|
|
|
5512 || f->windows_structure_changed)
|
|
|
5513 {
|
|
|
5514 preempted = redisplay_frame (f, 0);
|
|
|
5515 }
|
|
|
5516
|
|
|
5517 if (preempted)
|
|
|
5518 return 1;
|
|
|
5519
|
|
|
5520 if (f->size_change_pending)
|
|
|
5521 size_change_failed = 1;
|
|
|
5522 }
|
|
|
5523 }
|
|
|
5524
|
|
|
5525 /* If we get here then we redisplayed all of our frames without
|
|
|
5526 getting preempted so mark ourselves as clean. */
|
|
|
5527 d->buffers_changed = 0;
|
|
|
5528 d->clip_changed = 0;
|
|
|
5529 d->extents_changed = 0;
|
|
|
5530 d->faces_changed = 0;
|
|
|
5531 d->frame_changed = 0;
|
|
|
5532 d->icon_changed = 0;
|
|
|
5533 d->menubar_changed = 0;
|
|
|
5534 d->modeline_changed = 0;
|
|
|
5535 d->point_changed = 0;
|
|
|
5536 d->toolbar_changed = 0;
|
|
|
5537 d->windows_changed = 0;
|
|
|
5538 d->windows_structure_changed = 0;
|
|
|
5539
|
|
|
5540 if (!size_change_failed)
|
|
|
5541 d->size_changed = 0;
|
|
|
5542
|
|
|
5543 return 0;
|
|
|
5544 }
|
|
|
5545
|
|
100
|
5546 #ifndef WINDOWSNT
|
|
0
|
5547 static Lisp_Object
|
|
|
5548 restore_profiling_redisplay_flag (Lisp_Object val)
|
|
|
5549 {
|
|
|
5550 profiling_redisplay_flag = XINT (val);
|
|
|
5551 return Qnil;
|
|
|
5552 }
|
|
100
|
5553 #endif
|
|
0
|
5554
|
|
|
5555 /* Ensure that all windows on all frames on all devices are displaying
|
|
|
5556 the current contents of their respective buffers. */
|
|
|
5557
|
|
|
5558 static void
|
|
|
5559 redisplay_without_hooks (void)
|
|
|
5560 {
|
|
|
5561 Lisp_Object devcons, concons;
|
|
|
5562 int size_change_failed = 0;
|
|
|
5563 int count = specpdl_depth ();
|
|
|
5564
|
|
100
|
5565 #ifndef WINDOWSNT
|
|
0
|
5566 if (profiling_active)
|
|
|
5567 {
|
|
|
5568 record_unwind_protect (restore_profiling_redisplay_flag,
|
|
|
5569 make_int (profiling_redisplay_flag));
|
|
|
5570 profiling_redisplay_flag = 1;
|
|
|
5571 }
|
|
100
|
5572 #endif
|
|
0
|
5573
|
|
|
5574 if (asynch_device_change_pending)
|
|
|
5575 handle_asynch_device_change ();
|
|
|
5576
|
|
|
5577 if (!buffers_changed && !clip_changed && !extents_changed && !faces_changed
|
|
|
5578 && !frame_changed && !icon_changed && !menubar_changed
|
|
|
5579 && !modeline_changed && !point_changed && !size_changed
|
|
|
5580 && !toolbar_changed && !windows_changed && !windows_structure_changed
|
|
|
5581 && !disable_preemption && preemption_count < max_preempts)
|
|
|
5582 goto done;
|
|
|
5583
|
|
|
5584 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
5585 {
|
|
|
5586 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
5587 int preempted;
|
|
|
5588
|
|
|
5589 if (d->buffers_changed || d->clip_changed || d->extents_changed
|
|
|
5590 || d->faces_changed || d->frame_changed
|
|
|
5591 || d->icon_changed || d->menubar_changed
|
|
|
5592 || d->modeline_changed || d->point_changed || d->size_changed
|
|
|
5593 || d->toolbar_changed || d->windows_changed
|
|
|
5594 || d->windows_structure_changed)
|
|
|
5595 {
|
|
|
5596 preempted = redisplay_device (d);
|
|
|
5597
|
|
|
5598 if (preempted)
|
|
|
5599 {
|
|
|
5600 preemption_count++;
|
|
|
5601 RESET_CHANGED_SET_FLAGS;
|
|
|
5602 goto done;
|
|
|
5603 }
|
|
|
5604
|
|
|
5605 /* See comment in redisplay_device. */
|
|
|
5606 if (d->size_changed)
|
|
|
5607 size_change_failed = 1;
|
|
|
5608 }
|
|
|
5609 }
|
|
|
5610 preemption_count = 0;
|
|
|
5611
|
|
|
5612 /* Mark redisplay as accurate */
|
|
|
5613 buffers_changed = 0;
|
|
|
5614 clip_changed = 0;
|
|
|
5615 extents_changed = 0;
|
|
|
5616 frame_changed = 0;
|
|
|
5617 icon_changed = 0;
|
|
|
5618 menubar_changed = 0;
|
|
|
5619 modeline_changed = 0;
|
|
|
5620 point_changed = 0;
|
|
|
5621 toolbar_changed = 0;
|
|
|
5622 windows_changed = 0;
|
|
|
5623 windows_structure_changed = 0;
|
|
|
5624 RESET_CHANGED_SET_FLAGS;
|
|
|
5625
|
|
|
5626 if (faces_changed)
|
|
|
5627 {
|
|
|
5628 mark_all_faces_as_clean ();
|
|
|
5629 faces_changed = 0;
|
|
|
5630 }
|
|
|
5631
|
|
|
5632 if (!size_change_failed)
|
|
|
5633 size_changed = 0;
|
|
|
5634
|
|
|
5635 reset_buffer_changes ();
|
|
|
5636
|
|
|
5637 done:
|
|
|
5638 unbind_to (count, Qnil);
|
|
|
5639 }
|
|
|
5640
|
|
|
5641 void
|
|
|
5642 redisplay (void)
|
|
|
5643 {
|
|
|
5644 if (last_display_warning_tick != display_warning_tick &&
|
|
|
5645 !inhibit_warning_display)
|
|
|
5646 {
|
|
|
5647 /* If an error occurs during this function, oh well.
|
|
|
5648 If we report another warning, we could get stuck in an
|
|
|
5649 infinite loop reporting warnings. */
|
|
|
5650 call0_trapping_errors (0, Qdisplay_warning_buffer);
|
|
|
5651 last_display_warning_tick = display_warning_tick;
|
|
|
5652 }
|
|
|
5653 /* The run_hook_trapping_errors functions are smart enough not
|
|
|
5654 to do any evalling if the hook function is empty, so there
|
|
|
5655 should not be any significant time loss. All places in the
|
|
|
5656 C code that call redisplay() are prepared to handle GCing,
|
|
|
5657 so we should be OK. */
|
|
|
5658 #ifndef INHIBIT_REDISPLAY_HOOKS
|
|
|
5659 run_hook_trapping_errors ("Error in pre-redisplay-hook",
|
|
|
5660 Qpre_redisplay_hook);
|
|
|
5661 #endif
|
|
|
5662
|
|
|
5663 redisplay_without_hooks ();
|
|
|
5664
|
|
|
5665 #ifndef INHIBIT_REDISPLAY_HOOKS
|
|
|
5666 run_hook_trapping_errors ("Error in post-redisplay-hook",
|
|
|
5667 Qpost_redisplay_hook);
|
|
|
5668 #endif
|
|
|
5669 }
|
|
|
5670
|
|
|
5671 /* Inefficiently determine the line number of the line point is on and
|
|
|
5672 return it as a string. Always do this regardless of whether
|
|
|
5673 line_number_mode is true. */
|
|
|
5674
|
|
|
5675 static char window_line_number_buf[100];
|
|
|
5676 static char *
|
|
|
5677 window_line_number (struct window *w, int type)
|
|
|
5678 {
|
|
|
5679 struct device *d = XDEVICE (XFRAME (w->frame)->device);
|
|
|
5680 struct buffer *b = XBUFFER (w->buffer);
|
|
|
5681 Bufpos end =
|
|
70
|
5682 ((w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d))))
|
|
0
|
5683 ? BUF_PT (b)
|
|
|
5684 : marker_position (w->pointm[type]));
|
|
|
5685 int lots = 999999999;
|
|
|
5686 int shortage, line;
|
|
|
5687
|
|
|
5688 scan_buffer (b, '\n', end, 0, -lots, &shortage, 0);
|
|
|
5689 line = lots - shortage + 1;
|
|
|
5690
|
|
|
5691 sprintf (window_line_number_buf, "%d", line);
|
|
|
5692
|
|
|
5693 return (window_line_number_buf);
|
|
|
5694 }
|
|
|
5695
|
|
|
5696 /* Given a character representing an object in a modeline
|
|
|
5697 specification, return a string (stored into the global array
|
|
|
5698 `mode_spec_bufbyte_string') with the information that object
|
|
|
5699 represents.
|
|
|
5700
|
|
|
5701 This function is largely unchanged from previous versions of the
|
|
|
5702 redisplay engine. */
|
|
|
5703
|
|
|
5704 static void
|
|
|
5705 decode_mode_spec (struct window *w, Emchar spec, int type)
|
|
|
5706 {
|
|
|
5707 Lisp_Object obj = Qnil;
|
|
|
5708 CONST char *str = NULL;
|
|
|
5709 struct buffer *b = XBUFFER (w->buffer);
|
|
|
5710
|
|
|
5711 Dynarr_reset (mode_spec_bufbyte_string);
|
|
|
5712
|
|
|
5713 switch (spec)
|
|
|
5714 {
|
|
|
5715 /* print buffer name */
|
|
|
5716 case 'b':
|
|
|
5717 obj = b->name;
|
|
|
5718 break;
|
|
|
5719
|
|
|
5720 /* print visited file name */
|
|
|
5721 case 'f':
|
|
|
5722 obj = b->filename;
|
|
|
5723 break;
|
|
|
5724
|
|
|
5725 /* print the current column */
|
|
|
5726 case 'c':
|
|
|
5727 {
|
|
72
|
5728 int col = current_column (b) + (column_number_start_at_one != 0);
|
|
0
|
5729 int temp = col;
|
|
|
5730 int size = 2;
|
|
|
5731 char *buf;
|
|
|
5732
|
|
|
5733 while (temp >= 10)
|
|
|
5734 {
|
|
|
5735 temp /= 10;
|
|
|
5736 size++;
|
|
|
5737 }
|
|
|
5738
|
|
|
5739 buf = (char *) alloca (size * sizeof (char));
|
|
|
5740 sprintf (buf, "%d", col);
|
|
|
5741
|
|
|
5742 Dynarr_add_many (mode_spec_bufbyte_string,
|
|
|
5743 (CONST Bufbyte *) buf, strlen (buf));
|
|
|
5744
|
|
|
5745 goto decode_mode_spec_done;
|
|
|
5746 }
|
|
|
5747
|
|
70
|
5748 #ifdef MULE
|
|
|
5749 /* print the file coding system */
|
|
|
5750 case 'C':
|
|
|
5751 {
|
|
110
|
5752 Lisp_Object codesys = b->buffer_file_coding_system;
|
|
70
|
5753 /* Be very careful here not to get an error. */
|
|
|
5754 if (NILP (codesys) || SYMBOLP (codesys) || CODING_SYSTEMP (codesys))
|
|
|
5755 {
|
|
|
5756 codesys = Ffind_coding_system (codesys);
|
|
|
5757 if (CODING_SYSTEMP (codesys))
|
|
|
5758 obj = Fcoding_system_property (codesys, Qmnemonic);
|
|
|
5759 }
|
|
|
5760 }
|
|
|
5761 break;
|
|
|
5762 #endif
|
|
16
|
5763
|
|
0
|
5764 /* print the current line number */
|
|
|
5765 case 'l':
|
|
|
5766 str = window_line_number (w, type);
|
|
|
5767 break;
|
|
|
5768
|
|
|
5769 /* print value of mode-name (obsolete) */
|
|
|
5770 case 'm':
|
|
|
5771 obj = b->mode_name;
|
|
|
5772 break;
|
|
|
5773
|
|
149
|
5774 /* print hyphen and frame number, if != 1 */
|
|
|
5775 case 'N':
|
|
|
5776 #ifdef HAVE_TTY
|
|
|
5777 {
|
|
|
5778 struct frame *f = XFRAME (w->frame);
|
|
|
5779 if (FRAME_TTY_P (f) && f->order_count > 1)
|
|
|
5780 {
|
|
|
5781 str = alloca (10);
|
|
|
5782 sprintf (str, "-%d", f->order_count);
|
|
|
5783 }
|
|
|
5784 }
|
|
|
5785 #endif
|
|
|
5786 break;
|
|
|
5787
|
|
0
|
5788 /* print Narrow if appropriate */
|
|
|
5789 case 'n':
|
|
|
5790 if (BUF_BEGV (b) > BUF_BEG (b)
|
|
|
5791 || BUF_ZV (b) < BUF_Z (b))
|
|
|
5792 str = " Narrow";
|
|
|
5793 break;
|
|
|
5794
|
|
|
5795 /* print %, * or hyphen, if buffer is read-only, modified or neither */
|
|
|
5796 case '*':
|
|
|
5797 str = (!NILP (b->read_only)
|
|
|
5798 ? "%"
|
|
|
5799 : ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
5800 ? "*"
|
|
|
5801 : "-"));
|
|
|
5802 break;
|
|
|
5803
|
|
|
5804 /* print * or hyphen -- XEmacs change to allow a buffer to be
|
|
|
5805 read-only but still indicate whether it is modified. */
|
|
|
5806 case '+':
|
|
|
5807 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
5808 ? "*"
|
|
|
5809 : (!NILP (b->read_only)
|
|
|
5810 ? "%"
|
|
|
5811 : "-"));
|
|
|
5812 break;
|
|
|
5813
|
|
|
5814 /* #### defined in 19.29 decode_mode_spec, but not in
|
|
|
5815 modeline-format doc string. */
|
|
|
5816 /* This differs from %* in that it ignores read-only-ness. */
|
|
|
5817 case '&':
|
|
|
5818 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
|
|
|
5819 ? "*"
|
|
|
5820 : "-");
|
|
|
5821 break;
|
|
|
5822
|
|
|
5823 /* print process status */
|
|
|
5824 case 's':
|
|
|
5825 obj = Fget_buffer_process (w->buffer);
|
|
|
5826 if (NILP (obj))
|
|
|
5827 str = GETTEXT ("no process");
|
|
|
5828 else
|
|
|
5829 obj = Fsymbol_name (Fprocess_status (obj));
|
|
|
5830 break;
|
|
|
5831
|
|
|
5832 /* print name of selected frame (only meaningful under X Windows) */
|
|
|
5833 case 'S':
|
|
|
5834 obj = XFRAME (w->frame)->name;
|
|
|
5835 break;
|
|
|
5836
|
|
|
5837 /* indicate TEXT or BINARY */
|
|
|
5838 case 't':
|
|
|
5839 #ifdef MSDOS
|
|
|
5840 str = NILP (b->buffer_file_type) ? "T" : "B";
|
|
|
5841 #else /* not MSDOS */
|
|
|
5842 str = "T";
|
|
|
5843 #endif /* not MSDOS */
|
|
10
|
5844 break;
|
|
0
|
5845
|
|
|
5846 /* print percent of buffer above top of window, or Top, Bot or All */
|
|
|
5847 case 'p':
|
|
|
5848 {
|
|
|
5849 Bufpos pos = marker_position (w->start[type]);
|
|
|
5850 Charcount total = BUF_ZV (b) - BUF_BEGV (b);
|
|
|
5851
|
|
|
5852 /* This had better be while the desired lines are being done. */
|
|
|
5853 if (w->window_end_pos[type] <= BUF_Z (b) - BUF_ZV (b))
|
|
|
5854 {
|
|
|
5855 if (pos <= BUF_BEGV (b))
|
|
|
5856 str = "All";
|
|
|
5857 else
|
|
|
5858 str = "Bottom";
|
|
|
5859 }
|
|
|
5860 else if (pos <= BUF_BEGV (b))
|
|
|
5861 str = "Top";
|
|
|
5862 else
|
|
|
5863 {
|
|
|
5864 /* This hard limit is ok since the string it will hold has a
|
|
|
5865 fixed maximum length of 3. But just to be safe... */
|
|
|
5866 char buf[10];
|
|
|
5867
|
|
|
5868 total = ((pos - BUF_BEGV (b)) * 100 + total - 1) / total;
|
|
|
5869
|
|
|
5870 /* We can't normally display a 3-digit number, so get us a
|
|
|
5871 2-digit number that is close. */
|
|
|
5872 if (total == 100)
|
|
|
5873 total = 99;
|
|
|
5874
|
|
|
5875 sprintf (buf, "%2d%%", total);
|
|
|
5876 Dynarr_add_many (mode_spec_bufbyte_string, (Bufbyte *) buf,
|
|
|
5877 strlen (buf));
|
|
|
5878
|
|
|
5879 goto decode_mode_spec_done;
|
|
|
5880 }
|
|
|
5881 break;
|
|
|
5882 }
|
|
|
5883
|
|
|
5884 /* print percent of buffer above bottom of window, perhaps plus
|
|
|
5885 Top, or print Bottom or All */
|
|
|
5886 case 'P':
|
|
|
5887 {
|
|
|
5888 Bufpos toppos = marker_position (w->start[type]);
|
|
|
5889 Bufpos botpos = BUF_Z (b) - w->window_end_pos[type];
|
|
|
5890 Charcount total = BUF_ZV (b) - BUF_BEGV (b);
|
|
|
5891
|
|
10
|
5892 /* botpos is only accurate as of the last redisplay, so we can
|
|
16
|
5893 only treat it as a hint. In particular, after erase-buffer,
|
|
|
5894 botpos may be negative. */
|
|
10
|
5895 if (botpos < toppos)
|
|
|
5896 botpos = toppos;
|
|
16
|
5897
|
|
0
|
5898 if (botpos >= BUF_ZV (b))
|
|
|
5899 {
|
|
|
5900 if (toppos <= BUF_BEGV (b))
|
|
|
5901 str = "All";
|
|
|
5902 else
|
|
|
5903 str = "Bottom";
|
|
|
5904 }
|
|
|
5905 else
|
|
|
5906 {
|
|
|
5907 /* This hard limit is ok since the string it will hold has a
|
|
|
5908 fixed maximum length of around 6. But just to be safe... */
|
|
|
5909 char buf[10];
|
|
|
5910
|
|
|
5911 total = ((botpos - BUF_BEGV (b)) * 100 + total - 1) / total;
|
|
|
5912
|
|
|
5913 /* We can't normally display a 3-digit number, so get us a
|
|
|
5914 2-digit number that is close. */
|
|
|
5915 if (total == 100)
|
|
|
5916 total = 99;
|
|
|
5917
|
|
|
5918 if (toppos <= BUF_BEGV (b))
|
|
|
5919 sprintf (buf, "Top%2d%%", total);
|
|
|
5920 else
|
|
|
5921 sprintf (buf, "%2d%%", total);
|
|
|
5922
|
|
|
5923 Dynarr_add_many (mode_spec_bufbyte_string, (Bufbyte *) buf,
|
|
|
5924 strlen (buf));
|
|
|
5925
|
|
|
5926 goto decode_mode_spec_done;
|
|
|
5927 }
|
|
|
5928 break;
|
|
|
5929 }
|
|
|
5930
|
|
|
5931 /* print % */
|
|
|
5932 case '%':
|
|
|
5933 str = "%";
|
|
|
5934 break;
|
|
|
5935
|
|
|
5936 /* print one [ for each recursive editing level. */
|
|
|
5937 case '[':
|
|
|
5938 {
|
|
|
5939 int i;
|
|
|
5940
|
|
|
5941 if (command_loop_level > 5)
|
|
|
5942 {
|
|
|
5943 str = "[[[... ";
|
|
|
5944 break;
|
|
|
5945 }
|
|
|
5946
|
|
|
5947 for (i = 0; i < command_loop_level; i++)
|
|
|
5948 Dynarr_add (mode_spec_bufbyte_string, '[');
|
|
|
5949
|
|
|
5950 goto decode_mode_spec_done;
|
|
|
5951 }
|
|
|
5952
|
|
|
5953 /* print one ] for each recursive editing level. */
|
|
|
5954 case ']':
|
|
|
5955 {
|
|
|
5956 int i;
|
|
|
5957
|
|
|
5958 if (command_loop_level > 5)
|
|
|
5959 {
|
|
|
5960 str = "...]]]";
|
|
|
5961 break;
|
|
|
5962 }
|
|
|
5963
|
|
|
5964 for (i = 0; i < command_loop_level; i++)
|
|
|
5965 Dynarr_add (mode_spec_bufbyte_string, ']');
|
|
|
5966
|
|
|
5967 goto decode_mode_spec_done;
|
|
|
5968 }
|
|
|
5969
|
|
|
5970 /* print infinitely many dashes -- handle at top level now */
|
|
|
5971 case '-':
|
|
|
5972 break;
|
|
|
5973
|
|
|
5974 }
|
|
|
5975
|
|
|
5976 if (STRINGP (obj))
|
|
16
|
5977 Dynarr_add_many (mode_spec_bufbyte_string,
|
|
|
5978 XSTRING_DATA (obj),
|
|
|
5979 XSTRING_LENGTH (obj));
|
|
0
|
5980 else if (str)
|
|
|
5981 Dynarr_add_many (mode_spec_bufbyte_string, (Bufbyte *) str, strlen (str));
|
|
|
5982
|
|
|
5983 decode_mode_spec_done:
|
|
|
5984 Dynarr_add (mode_spec_bufbyte_string, '\0');
|
|
|
5985 }
|
|
|
5986
|
|
16
|
5987 /* Given a display line, free all of its data structures. */
|
|
0
|
5988
|
|
|
5989 static void
|
|
|
5990 free_display_line (struct display_line *dl)
|
|
|
5991 {
|
|
|
5992 int block;
|
|
|
5993
|
|
|
5994 if (dl->display_blocks)
|
|
|
5995 {
|
|
|
5996 for (block = 0; block < Dynarr_largest (dl->display_blocks); block++)
|
|
|
5997 {
|
|
|
5998 struct display_block *db = Dynarr_atp (dl->display_blocks, block);
|
|
|
5999
|
|
|
6000 Dynarr_free (db->runes);
|
|
|
6001 }
|
|
|
6002
|
|
|
6003 Dynarr_free (dl->display_blocks);
|
|
|
6004 dl->display_blocks = 0;
|
|
|
6005 }
|
|
|
6006
|
|
|
6007 if (dl->left_glyphs)
|
|
|
6008 {
|
|
|
6009 Dynarr_free (dl->left_glyphs);
|
|
|
6010 dl->left_glyphs = 0;
|
|
|
6011 }
|
|
|
6012
|
|
|
6013 if (dl->right_glyphs)
|
|
|
6014 {
|
|
|
6015 Dynarr_free (dl->right_glyphs);
|
|
|
6016 dl->right_glyphs = 0;
|
|
|
6017 }
|
|
|
6018 }
|
|
|
6019
|
|
|
6020
|
|
|
6021 /* Given an array of display lines, free them and all data structures
|
|
|
6022 contained within them. */
|
|
|
6023
|
|
|
6024 static void
|
|
|
6025 free_display_lines (display_line_dynarr *dla)
|
|
|
6026 {
|
|
|
6027 int line;
|
|
|
6028
|
|
|
6029 for (line = 0; line < Dynarr_largest (dla); line++)
|
|
|
6030 {
|
|
|
6031 free_display_line (Dynarr_atp (dla, line));
|
|
|
6032 }
|
|
|
6033
|
|
|
6034 Dynarr_free (dla);
|
|
|
6035 }
|
|
|
6036
|
|
|
6037 /* Call internal free routine for each set of display lines. */
|
|
|
6038
|
|
|
6039 void
|
|
|
6040 free_display_structs (struct window_mirror *mir)
|
|
|
6041 {
|
|
|
6042 if (mir->current_display_lines)
|
|
|
6043 {
|
|
|
6044 free_display_lines (mir->current_display_lines);
|
|
|
6045 mir->current_display_lines = 0;
|
|
|
6046 }
|
|
|
6047
|
|
|
6048 if (mir->desired_display_lines)
|
|
|
6049 {
|
|
|
6050 free_display_lines (mir->desired_display_lines);
|
|
|
6051 mir->desired_display_lines = 0;
|
|
|
6052 }
|
|
|
6053 }
|
|
|
6054
|
|
|
6055
|
|
|
6056 static void
|
|
|
6057 mark_redisplay_structs (display_line_dynarr *dla,
|
|
|
6058 void (*markobj) (Lisp_Object))
|
|
|
6059 {
|
|
|
6060 int line;
|
|
|
6061
|
|
|
6062 for (line = 0; line < Dynarr_length (dla); line++)
|
|
|
6063 {
|
|
|
6064 int block, loop;
|
|
|
6065 struct display_line *dl = Dynarr_atp (dla, line);
|
|
|
6066
|
|
|
6067 for (block = 0; block < Dynarr_length (dl->display_blocks); block++)
|
|
|
6068 {
|
|
|
6069 int rune;
|
|
|
6070 struct display_block *db = Dynarr_atp (dl->display_blocks, block);
|
|
|
6071
|
|
|
6072 for (rune = 0; rune < Dynarr_length (db->runes); rune++)
|
|
|
6073 {
|
|
|
6074 struct rune *rb = Dynarr_atp (db->runes, rune);
|
|
|
6075
|
|
|
6076 if (rb->type == RUNE_DGLYPH)
|
|
|
6077 {
|
|
|
6078 if (!NILP (rb->object.dglyph.glyph))
|
|
|
6079 ((markobj) (rb->object.dglyph.glyph));
|
|
|
6080 if (!NILP (rb->object.dglyph.extent))
|
|
|
6081 ((markobj) (rb->object.dglyph.extent));
|
|
|
6082 }
|
|
|
6083 }
|
|
|
6084 }
|
|
|
6085
|
|
|
6086 for (loop = 0; loop < 2; loop++)
|
|
|
6087 {
|
|
|
6088 glyph_block_dynarr *gba = (loop
|
|
|
6089 ? dl->right_glyphs
|
|
|
6090 : dl->left_glyphs);
|
|
|
6091
|
|
|
6092 if (gba != NULL)
|
|
|
6093 {
|
|
|
6094 for (block = 0; block < Dynarr_length (gba); block++)
|
|
|
6095 {
|
|
|
6096 struct glyph_block *gb = Dynarr_atp (gba, block);
|
|
|
6097
|
|
|
6098 if (!NILP (gb->glyph))
|
|
|
6099 ((markobj) (gb->glyph));
|
|
|
6100 if (!NILP (gb->extent))
|
|
|
6101 ((markobj) (gb->extent));
|
|
|
6102 }
|
|
|
6103 }
|
|
|
6104 }
|
|
|
6105 }
|
|
|
6106 }
|
|
|
6107
|
|
|
6108 static void
|
|
|
6109 mark_window_mirror (struct window_mirror *mir, void (*markobj)(Lisp_Object))
|
|
|
6110 {
|
|
|
6111 mark_redisplay_structs (mir->current_display_lines, markobj);
|
|
|
6112 mark_redisplay_structs (mir->desired_display_lines, markobj);
|
|
|
6113
|
|
|
6114 if (mir->next)
|
|
|
6115 mark_window_mirror (mir->next, markobj);
|
|
|
6116
|
|
|
6117 if (mir->hchild)
|
|
|
6118 mark_window_mirror (mir->hchild, markobj);
|
|
|
6119 else if (mir->vchild)
|
|
|
6120 mark_window_mirror (mir->vchild, markobj);
|
|
|
6121 }
|
|
|
6122
|
|
|
6123 void
|
|
|
6124 mark_redisplay (void (*markobj)(Lisp_Object))
|
|
|
6125 {
|
|
|
6126 Lisp_Object frmcons, devcons, concons;
|
|
|
6127
|
|
|
6128 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
6129 {
|
|
|
6130 struct frame *f = XFRAME (XCAR (frmcons));
|
|
|
6131 update_frame_window_mirror (f);
|
|
|
6132 mark_window_mirror (f->root_mirror, markobj);
|
|
|
6133 }
|
|
|
6134 }
|
|
|
6135
|
|
|
6136 /*****************************************************************************
|
|
|
6137 Line Start Cache Description and Rationale
|
|
|
6138
|
|
|
6139 The traditional scrolling code in Emacs breaks in a variable height world.
|
|
|
6140 It depends on the key assumption that the number of lines that can be
|
|
|
6141 displayed at any given time is fixed. This led to a complete separation
|
|
|
6142 of the scrolling code from the redisplay code. In order to fully support
|
|
|
6143 variable height lines, the scrolling code must actually be tightly
|
|
|
6144 integrated with redisplay. Only redisplay can determine how many lines
|
|
|
6145 will be displayed on a screen for any given starting point.
|
|
|
6146
|
|
|
6147 What is ideally wanted is a complete list of the starting buffer position
|
|
|
6148 for every possible display line of a buffer along with the height of that
|
|
|
6149 display line. Maintaining such a full list would be very expensive. We
|
|
|
6150 settle for having it include information for all areas which we happen to
|
|
|
6151 generate anyhow (i.e. the region currently being displayed) and for those
|
|
|
6152 areas we need to work with.
|
|
|
6153
|
|
|
6154 In order to ensure that the cache accurately represents what redisplay
|
|
|
6155 would actually show, it is necessary to invalidate it in many situations.
|
|
|
6156 If the buffer changes, the starting positions may no longer be correct.
|
|
|
6157 If a face or an extent has changed then the line heights may have altered.
|
|
|
6158 These events happen frequently enough that the cache can end up being
|
|
|
6159 constantly disabled. With this potentially constant invalidation when is
|
|
|
6160 the cache ever useful?
|
|
|
6161
|
|
|
6162 Even if the cache is invalidated before every single usage, it is
|
|
|
6163 necessary. Scrolling often requires knowledge about display lines which
|
|
|
6164 are actually above or below the visible region. The cache provides a
|
|
|
6165 convenient light-weight method of storing this information for multiple
|
|
|
6166 display regions. This knowledge is necessary for the scrolling code to
|
|
|
6167 always obey the First Golden Rule of Redisplay.
|
|
|
6168
|
|
|
6169 If the cache already contains all of the information that the scrolling
|
|
|
6170 routines happen to need so that it doesn't have to go generate it, then we
|
|
|
6171 are able to obey the Third Golden Rule of Redisplay. The first thing we
|
|
|
6172 do to help out the cache is to always add the displayed region. This
|
|
|
6173 region had to be generated anyway, so the cache ends up getting the
|
|
|
6174 information basically for free. In those cases where a user is simply
|
|
|
6175 scrolling around viewing a buffer there is a high probability that this is
|
|
|
6176 sufficient to always provide the needed information. The second thing we
|
|
|
6177 can do is be smart about invalidating the cache.
|
|
|
6178
|
|
|
6179 TODO -- Be smart about invalidating the cache. Potential places:
|
|
|
6180
|
|
|
6181 + Insertions at end-of-line which don't cause line-wraps do not alter the
|
|
|
6182 starting positions of any display lines. These types of buffer
|
|
|
6183 modifications should not invalidate the cache. This is actually a large
|
|
|
6184 optimization for redisplay speed as well.
|
|
|
6185
|
|
|
6186 + Buffer modifications frequently only affect the display of lines at and
|
|
|
6187 below where they occur. In these situations we should only invalidate
|
|
|
6188 the part of the cache starting at where the modification occurs.
|
|
|
6189
|
|
|
6190 In case you're wondering, the Second Golden Rule of Redisplay is not
|
|
|
6191 applicable.
|
|
|
6192 ****************************************************************************/
|
|
|
6193
|
|
|
6194 /* This will get used quite a bit so we don't want to be constantly
|
|
|
6195 allocating and freeing it. */
|
|
|
6196 line_start_cache_dynarr *internal_cache;
|
|
|
6197
|
|
|
6198 /* Makes internal_cache represent the TYPE display structs and only
|
|
|
6199 the TYPE display structs. */
|
|
|
6200
|
|
|
6201 static void
|
|
|
6202 update_internal_cache_list (struct window *w, int type)
|
|
|
6203 {
|
|
|
6204 int line;
|
|
|
6205 display_line_dynarr *dla = window_display_lines (w, type);
|
|
|
6206
|
|
|
6207 Dynarr_reset (internal_cache);
|
|
|
6208 for (line = 0; line < Dynarr_length (dla); line++)
|
|
|
6209 {
|
|
|
6210 struct display_line *dl = Dynarr_atp (dla, line);
|
|
|
6211
|
|
|
6212 if (dl->modeline)
|
|
|
6213 continue;
|
|
|
6214 else
|
|
|
6215 {
|
|
|
6216 struct line_start_cache lsc;
|
|
|
6217
|
|
|
6218 lsc.start = dl->bufpos;
|
|
|
6219 lsc.end = dl->end_bufpos;
|
|
|
6220 lsc.height = dl->ascent + dl->descent;
|
|
|
6221
|
|
|
6222 Dynarr_add (internal_cache, lsc);
|
|
|
6223 }
|
|
|
6224 }
|
|
|
6225 }
|
|
|
6226
|
|
|
6227 /* Reset the line cache if necessary. This should be run at the
|
|
|
6228 beginning of any function which access the cache. */
|
|
|
6229
|
|
|
6230 static void
|
|
|
6231 validate_line_start_cache (struct window *w)
|
|
|
6232 {
|
|
|
6233 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6234 struct frame *f = XFRAME (w->frame);
|
|
|
6235
|
|
|
6236 if (!w->line_cache_validation_override)
|
|
|
6237 {
|
|
|
6238 /* f->extents_changed used to be in here because extent face and
|
|
|
6239 size changes can cause text shifting. However, the extent
|
|
|
6240 covering the region is constantly having its face set and
|
|
|
6241 priority altered by the mouse code. This means that the line
|
|
|
6242 start cache is constanty being invalidated. This is bad
|
|
|
6243 since the mouse code also triggers heavy usage of the cache.
|
|
|
6244 Since it is an unlikely that f->extents being changed
|
|
|
6245 indicates that the cache really needs to be updated and if it
|
|
|
6246 does redisplay will catch it pretty quickly we no longer
|
|
|
6247 invalidate the cache if it is set. This greatly speeds up
|
|
|
6248 dragging out regions with the mouse. */
|
|
|
6249 if (XINT (w->line_cache_last_updated) < BUF_MODIFF (b)
|
|
|
6250 || f->faces_changed
|
|
|
6251 || f->clip_changed)
|
|
|
6252 {
|
|
|
6253 Dynarr_reset (w->line_start_cache);
|
|
|
6254 }
|
|
|
6255 }
|
|
|
6256 }
|
|
|
6257
|
|
|
6258 /* Return the very first buffer position contained in the given
|
|
|
6259 window's cache, or -1 if the cache is empty. Assumes that the
|
|
|
6260 cache is valid. */
|
|
|
6261
|
|
|
6262 static Bufpos
|
|
|
6263 line_start_cache_start (struct window *w)
|
|
|
6264 {
|
|
|
6265 line_start_cache_dynarr *cache = w->line_start_cache;
|
|
|
6266
|
|
|
6267 if (!Dynarr_length (cache))
|
|
|
6268 return -1;
|
|
|
6269 else
|
|
|
6270 return (Dynarr_atp (cache, 0)->start);
|
|
|
6271 }
|
|
|
6272
|
|
|
6273 /* Return the very last buffer position contained in the given
|
|
|
6274 window's cache, or -1 if the cache is empty. Assumes that the
|
|
|
6275 cache is valid. */
|
|
|
6276
|
|
|
6277 static Bufpos
|
|
|
6278 line_start_cache_end (struct window *w)
|
|
|
6279 {
|
|
|
6280 line_start_cache_dynarr *cache = w->line_start_cache;
|
|
|
6281
|
|
|
6282 if (!Dynarr_length (cache))
|
|
|
6283 return -1;
|
|
|
6284 else
|
|
|
6285 return (Dynarr_atp (cache, Dynarr_length (cache) - 1)->end);
|
|
|
6286 }
|
|
|
6287
|
|
|
6288 /* Return the index of the line POINT is contained within in window
|
|
|
6289 W's line start cache. It will enlarge the cache or move the cache
|
|
|
6290 window in order to have POINT be present in the cache. MIN_PAST is
|
|
|
6291 a guarantee of the number of entries in the cache present on either
|
|
|
6292 side of POINT (unless a buffer boundary is hit). If MIN_PAST is -1
|
|
|
6293 then it will be treated as 0, but the cache window will not be
|
|
|
6294 allowed to shift. Returns -1 if POINT cannot be found in the cache
|
|
|
6295 for any reason. */
|
|
|
6296
|
|
|
6297 int
|
|
|
6298 point_in_line_start_cache (struct window *w, Bufpos point, int min_past)
|
|
|
6299 {
|
|
|
6300 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6301 line_start_cache_dynarr *cache = w->line_start_cache;
|
|
|
6302 unsigned int top, bottom, pos;
|
|
|
6303
|
|
|
6304 validate_line_start_cache (w);
|
|
|
6305 w->line_cache_validation_override++;
|
|
|
6306
|
|
|
6307 /* Let functions pass in negative values, but we still treat -1
|
|
|
6308 specially. */
|
|
|
6309 /* #### bogosity alert */
|
|
|
6310 if (min_past < 0 && min_past != -1)
|
|
|
6311 min_past = -min_past;
|
|
|
6312
|
|
|
6313 if (!Dynarr_length (cache) || line_start_cache_start (w) > point
|
|
|
6314 || line_start_cache_end (w) < point)
|
|
|
6315 {
|
|
|
6316 int loop;
|
|
|
6317 int win_char_height = window_char_height (w, 1);
|
|
|
6318
|
|
|
6319 /* Occasionally we get here with a 0 height
|
|
|
6320 window. find_next_newline_no_quit will abort if we pass it a
|
|
|
6321 count of 0 so handle that case. */
|
|
|
6322 if (!win_char_height)
|
|
|
6323 win_char_height = 1;
|
|
|
6324
|
|
|
6325 if (!Dynarr_length (cache))
|
|
|
6326 {
|
|
|
6327 Bufpos from = find_next_newline_no_quit (b, point, -1);
|
|
|
6328 Bufpos to = find_next_newline_no_quit (b, from, win_char_height);
|
|
|
6329
|
|
|
6330 update_line_start_cache (w, from, to, point, 0);
|
|
|
6331
|
|
|
6332 if (!Dynarr_length (cache))
|
|
|
6333 {
|
|
|
6334 w->line_cache_validation_override--;
|
|
|
6335 return -1;
|
|
|
6336 }
|
|
|
6337 }
|
|
|
6338
|
|
|
6339 assert (Dynarr_length (cache));
|
|
|
6340
|
|
|
6341 loop = 0;
|
|
|
6342 while (line_start_cache_start (w) > point
|
|
|
6343 && (loop < cache_adjustment || min_past == -1))
|
|
|
6344 {
|
|
|
6345 Bufpos from, to;
|
|
|
6346
|
|
|
6347 from = line_start_cache_start (w);
|
|
|
6348 if (from <= BUF_BEGV (b))
|
|
|
6349 break;
|
|
|
6350
|
|
|
6351 from = find_next_newline_no_quit (b, from, -win_char_height);
|
|
|
6352 to = line_start_cache_end (w);
|
|
|
6353
|
|
|
6354 update_line_start_cache (w, from, to, point, 0);
|
|
|
6355 loop++;
|
|
|
6356 }
|
|
|
6357
|
|
|
6358 if (line_start_cache_start (w) > point)
|
|
|
6359 {
|
|
|
6360 Bufpos from, to;
|
|
|
6361
|
|
|
6362 from = find_next_newline_no_quit (b, point, -1);
|
|
|
6363 if (from >= BUF_ZV (b))
|
|
|
6364 {
|
|
|
6365 to = find_next_newline_no_quit (b, from, -win_char_height);
|
|
|
6366 from = to;
|
|
|
6367 to = BUF_ZV (b);
|
|
|
6368 }
|
|
|
6369 else
|
|
|
6370 to = find_next_newline_no_quit (b, from, win_char_height);
|
|
|
6371
|
|
|
6372 update_line_start_cache (w, from, to, point, 0);
|
|
|
6373 }
|
|
|
6374
|
|
|
6375 loop = 0;
|
|
|
6376 while (line_start_cache_end (w) < point
|
|
|
6377 && (loop < cache_adjustment || min_past == -1))
|
|
|
6378 {
|
|
|
6379 Bufpos from, to;
|
|
|
6380
|
|
|
6381 to = line_start_cache_end (w);
|
|
|
6382 if (to >= BUF_ZV (b))
|
|
|
6383 break;
|
|
|
6384
|
|
|
6385 from = line_start_cache_end (w);
|
|
|
6386 to = find_next_newline_no_quit (b, from, win_char_height);
|
|
|
6387
|
|
|
6388 update_line_start_cache (w, from, to, point, 0);
|
|
|
6389 loop++;
|
|
|
6390 }
|
|
|
6391
|
|
|
6392 if (line_start_cache_end (w) < point)
|
|
|
6393 {
|
|
|
6394 Bufpos from, to;
|
|
|
6395
|
|
|
6396 from = find_next_newline_no_quit (b, point, -1);
|
|
|
6397 if (from >= BUF_ZV (b))
|
|
|
6398 {
|
|
|
6399 to = find_next_newline_no_quit (b, from, -win_char_height);
|
|
|
6400 from = to;
|
|
|
6401 to = BUF_ZV (b);
|
|
|
6402 }
|
|
|
6403 else
|
|
|
6404 to = find_next_newline_no_quit (b, from, win_char_height);
|
|
|
6405
|
|
|
6406 update_line_start_cache (w, from, to, point, 0);
|
|
|
6407 }
|
|
|
6408 }
|
|
|
6409
|
|
|
6410 assert (Dynarr_length (cache));
|
|
|
6411
|
|
|
6412 if (min_past == -1)
|
|
|
6413 min_past = 0;
|
|
|
6414
|
|
|
6415 /* This could happen if the buffer is narrowed. */
|
|
|
6416 if (line_start_cache_start (w) > point
|
|
|
6417 || line_start_cache_end (w) < point)
|
|
|
6418 {
|
|
|
6419 w->line_cache_validation_override--;
|
|
|
6420 return -1;
|
|
|
6421 }
|
|
|
6422
|
|
|
6423 find_point_loop:
|
|
|
6424
|
|
|
6425 top = Dynarr_length (cache) - 1;
|
|
|
6426 bottom = 0;
|
|
|
6427
|
|
|
6428 while (1)
|
|
|
6429 {
|
|
|
6430 unsigned int new_pos;
|
|
|
6431 Bufpos start, end;
|
|
|
6432
|
|
|
6433 pos = (bottom + top + 1) >> 1;
|
|
|
6434 start = Dynarr_atp (cache, pos)->start;
|
|
|
6435 end = Dynarr_atp (cache, pos)->end;
|
|
|
6436
|
|
|
6437 if (point >= start && point <= end)
|
|
|
6438 {
|
|
|
6439 if (pos < min_past && line_start_cache_start (w) > BUF_BEGV (b))
|
|
|
6440 {
|
|
|
6441 Bufpos from =
|
|
|
6442 find_next_newline_no_quit (b, line_start_cache_start (w),
|
|
|
6443 -min_past - 1);
|
|
|
6444 Bufpos to = line_start_cache_end (w);
|
|
|
6445
|
|
|
6446 update_line_start_cache (w, from, to, point, 0);
|
|
|
6447 goto find_point_loop;
|
|
|
6448 }
|
|
|
6449 else if ((Dynarr_length (cache) - pos - 1) < min_past
|
|
|
6450 && line_start_cache_end (w) < BUF_ZV (b))
|
|
|
6451 {
|
|
|
6452 Bufpos from = line_start_cache_end (w);
|
|
|
6453 Bufpos to = find_next_newline_no_quit (b, from,
|
|
|
6454 (min_past
|
|
|
6455 ? min_past
|
|
|
6456 : 1));
|
|
|
6457
|
|
|
6458 update_line_start_cache (w, from, to, point, 0);
|
|
|
6459 goto find_point_loop;
|
|
|
6460 }
|
|
|
6461 else
|
|
|
6462 {
|
|
|
6463 w->line_cache_validation_override--;
|
|
|
6464 return pos;
|
|
|
6465 }
|
|
|
6466 }
|
|
|
6467 else if (point > end)
|
|
|
6468 bottom = pos + 1;
|
|
|
6469 else if (point < start)
|
|
|
6470 top = pos - 1;
|
|
|
6471 else
|
|
|
6472 abort ();
|
|
|
6473
|
|
|
6474 new_pos = (bottom + top + 1) >> 1;
|
|
|
6475 if (pos == new_pos)
|
|
|
6476 {
|
|
|
6477 w->line_cache_validation_override--;
|
|
|
6478 return -1;
|
|
|
6479 }
|
|
|
6480 }
|
|
|
6481 }
|
|
|
6482
|
|
|
6483 /* Return a boolean indicating if POINT would be visible in window W
|
|
|
6484 if display of the window was to begin at STARTP. */
|
|
|
6485
|
|
|
6486 int
|
|
|
6487 point_would_be_visible (struct window *w, Bufpos startp, Bufpos point)
|
|
|
6488 {
|
|
|
6489 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6490 int pixpos = 0;
|
|
|
6491 int bottom = WINDOW_TEXT_HEIGHT (w);
|
|
|
6492 int start_elt;
|
|
|
6493
|
|
|
6494 /* If point is before the intended start it obviously can't be visible. */
|
|
|
6495 if (point < startp)
|
|
|
6496 return 0;
|
|
|
6497
|
|
|
6498 /* If point or start are not in the accessible buffer range, then
|
|
|
6499 fail. */
|
|
|
6500 if (startp < BUF_BEGV (b) || startp > BUF_ZV (b)
|
|
|
6501 || point < BUF_BEGV (b) || point > BUF_ZV (b))
|
|
|
6502 {
|
|
|
6503 w->line_cache_validation_override--;
|
|
|
6504 return 0;
|
|
|
6505 }
|
|
|
6506
|
|
|
6507 validate_line_start_cache (w);
|
|
|
6508 w->line_cache_validation_override++;
|
|
|
6509
|
|
|
6510 start_elt = point_in_line_start_cache (w, startp, 0);
|
|
|
6511 if (start_elt == -1)
|
|
|
6512 {
|
|
|
6513 w->line_cache_validation_override--;
|
|
|
6514 return 0;
|
|
|
6515 }
|
|
|
6516
|
|
|
6517 assert (line_start_cache_start (w) <= startp
|
|
|
6518 && line_start_cache_end (w) >= startp);
|
|
|
6519
|
|
|
6520 while (1)
|
|
|
6521 {
|
|
|
6522 int height;
|
|
|
6523
|
|
|
6524 /* Expand the cache if necessary. */
|
|
|
6525 if (start_elt == Dynarr_length (w->line_start_cache))
|
|
|
6526 {
|
|
|
6527 Bufpos old_startp =
|
|
|
6528 Dynarr_atp (w->line_start_cache, start_elt - 1)->start;
|
|
|
6529
|
|
|
6530 start_elt = point_in_line_start_cache (w, old_startp,
|
|
|
6531 window_char_height (w, 0));
|
|
|
6532
|
|
|
6533 /* We've already actually processed old_startp, so increment
|
|
|
6534 immediately. */
|
|
|
6535 start_elt++;
|
|
|
6536
|
|
|
6537 /* If this happens we didn't add any extra elements. Bummer. */
|
|
|
6538 if (start_elt == Dynarr_length (w->line_start_cache))
|
|
|
6539 {
|
|
|
6540 w->line_cache_validation_override--;
|
|
|
6541 return 0;
|
|
|
6542 }
|
|
|
6543 }
|
|
|
6544
|
|
|
6545 height = Dynarr_atp (w->line_start_cache, start_elt)->height;
|
|
|
6546
|
|
|
6547 if (pixpos + height > bottom)
|
|
|
6548 {
|
|
|
6549 if (bottom - pixpos < VERTICAL_CLIP (w, 0))
|
|
|
6550 {
|
|
|
6551 w->line_cache_validation_override--;
|
|
|
6552 return 0;
|
|
|
6553 }
|
|
|
6554 }
|
|
|
6555
|
|
|
6556 pixpos += height;
|
|
|
6557 if (point <= Dynarr_atp (w->line_start_cache, start_elt)->end)
|
|
|
6558 {
|
|
|
6559 w->line_cache_validation_override--;
|
|
|
6560 return 1;
|
|
|
6561 }
|
|
|
6562
|
|
|
6563 start_elt++;
|
|
|
6564 }
|
|
|
6565 }
|
|
|
6566
|
|
|
6567 /* For the given window W, if display starts at STARTP, what will be
|
|
|
6568 the buffer position at the beginning or end of the last line
|
|
|
6569 displayed. The end of the last line is also know as the window end
|
|
|
6570 position.
|
|
|
6571
|
|
|
6572 #### With a little work this could probably be reworked as just a
|
|
|
6573 call to start_with_line_at_pixpos. */
|
|
|
6574
|
|
|
6575 static Bufpos
|
|
|
6576 start_end_of_last_line (struct window *w, Bufpos startp, int end)
|
|
|
6577 {
|
|
|
6578 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6579 line_start_cache_dynarr *cache = w->line_start_cache;
|
|
|
6580 int pixpos = 0;
|
|
|
6581 int bottom = WINDOW_TEXT_HEIGHT (w);
|
|
|
6582 Bufpos cur_start;
|
|
|
6583 int start_elt;
|
|
|
6584
|
|
|
6585 validate_line_start_cache (w);
|
|
|
6586 w->line_cache_validation_override++;
|
|
|
6587
|
|
|
6588 if (startp < BUF_BEGV (b))
|
|
|
6589 startp = BUF_BEGV (b);
|
|
|
6590 else if (startp > BUF_ZV (b))
|
|
|
6591 startp = BUF_ZV (b);
|
|
|
6592 cur_start = startp;
|
|
|
6593
|
|
|
6594 start_elt = point_in_line_start_cache (w, cur_start, 0);
|
|
|
6595 if (start_elt == -1)
|
|
|
6596 abort (); /* this had better never happen */
|
|
|
6597
|
|
|
6598 while (1)
|
|
|
6599 {
|
|
|
6600 int height = Dynarr_atp (cache, start_elt)->height;
|
|
|
6601
|
|
|
6602 cur_start = Dynarr_atp (cache, start_elt)->start;
|
|
|
6603
|
|
|
6604 if (pixpos + height > bottom)
|
|
|
6605 {
|
|
|
6606 /* Adjust for any possible clip. */
|
|
|
6607 if (bottom - pixpos < VERTICAL_CLIP (w, 0))
|
|
|
6608 start_elt--;
|
|
|
6609
|
|
|
6610 if (start_elt < 0)
|
|
|
6611 {
|
|
|
6612 w->line_cache_validation_override--;
|
|
|
6613 if (end)
|
|
|
6614 return (BUF_ZV (b));
|
|
|
6615 else
|
|
|
6616 return (BUF_BEGV (b));
|
|
|
6617 }
|
|
|
6618 else
|
|
|
6619 {
|
|
|
6620 w->line_cache_validation_override--;
|
|
|
6621 if (end)
|
|
|
6622 return Dynarr_atp (cache, start_elt)->end;
|
|
|
6623 else
|
|
|
6624 return Dynarr_atp (cache, start_elt)->start;
|
|
|
6625 }
|
|
|
6626 }
|
|
|
6627
|
|
|
6628 pixpos += height;
|
|
|
6629 start_elt++;
|
|
|
6630 if (start_elt == Dynarr_length (cache))
|
|
|
6631 {
|
|
|
6632 Bufpos from = line_start_cache_end (w);
|
|
|
6633 int win_char_height = window_char_height (w, 0);
|
|
|
6634 Bufpos to = find_next_newline_no_quit (b, from,
|
|
|
6635 (win_char_height
|
|
|
6636 ? win_char_height
|
|
|
6637 : 1));
|
|
|
6638
|
|
|
6639 /* We've hit the end of the bottom so that's what it is. */
|
|
|
6640 if (from >= BUF_ZV (b))
|
|
|
6641 {
|
|
|
6642 w->line_cache_validation_override--;
|
|
|
6643 return (BUF_ZV (b));
|
|
|
6644 }
|
|
|
6645
|
|
|
6646 update_line_start_cache (w, from, to, BUF_PT (b), 0);
|
|
|
6647
|
|
|
6648 /* Updating the cache invalidates any current indexes. */
|
|
|
6649 start_elt = point_in_line_start_cache (w, cur_start, -1) + 1;
|
|
|
6650 }
|
|
|
6651 }
|
|
|
6652 }
|
|
|
6653
|
|
|
6654 /* For the given window W, if display starts at STARTP, what will be
|
|
|
6655 the buffer position at the beginning of the last line displayed. */
|
|
|
6656
|
|
|
6657 Bufpos
|
|
|
6658 start_of_last_line (struct window *w, Bufpos startp)
|
|
|
6659 {
|
|
|
6660 return start_end_of_last_line (w, startp, 0);
|
|
|
6661 }
|
|
|
6662
|
|
|
6663 /* For the given window W, if display starts at STARTP, what will be
|
|
|
6664 the buffer position at the end of the last line displayed. This is
|
|
|
6665 also know as the window end position. */
|
|
|
6666
|
|
|
6667 Bufpos
|
|
|
6668 end_of_last_line (struct window *w, Bufpos startp)
|
|
|
6669 {
|
|
|
6670 return start_end_of_last_line (w, startp, 1);
|
|
|
6671 }
|
|
|
6672
|
|
|
6673 /* For window W, what does the starting position have to be so that
|
|
|
6674 the line containing POINT will cover pixel position PIXPOS. */
|
|
|
6675
|
|
|
6676 Bufpos
|
|
|
6677 start_with_line_at_pixpos (struct window *w, Bufpos point, int pixpos)
|
|
|
6678 {
|
|
|
6679 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6680 int cur_elt;
|
|
116
|
6681 Bufpos cur_pos, prev_pos = point;
|
|
|
6682 int point_line_height;
|
|
0
|
6683 int pixheight = pixpos - WINDOW_TEXT_TOP (w);
|
|
|
6684
|
|
|
6685 validate_line_start_cache (w);
|
|
|
6686 w->line_cache_validation_override++;
|
|
|
6687
|
|
|
6688 cur_elt = point_in_line_start_cache (w, point, 0);
|
|
|
6689 /* #### See comment in update_line_start_cache about big minibuffers. */
|
|
|
6690 if (cur_elt < 0)
|
|
|
6691 return point;
|
|
116
|
6692
|
|
|
6693 point_line_height = Dynarr_atp (w->line_start_cache, cur_elt)->height;
|
|
|
6694
|
|
0
|
6695 while (1)
|
|
|
6696 {
|
|
|
6697 cur_pos = Dynarr_atp (w->line_start_cache, cur_elt)->start;
|
|
|
6698
|
|
|
6699 pixheight -= Dynarr_atp (w->line_start_cache, cur_elt)->height;
|
|
|
6700
|
|
|
6701 /* Do not take into account the value of vertical_clip here.
|
|
|
6702 That is the responsibility of the calling functions. */
|
|
|
6703 if (pixheight < 0)
|
|
|
6704 {
|
|
|
6705 w->line_cache_validation_override--;
|
|
116
|
6706 if (-pixheight > point_line_height)
|
|
|
6707 /* We can't make the target line cover pixpos, so put it
|
|
|
6708 above pixpos. That way it will at least be visible. */
|
|
|
6709 return prev_pos;
|
|
|
6710 else
|
|
|
6711 return cur_pos;
|
|
0
|
6712 }
|
|
|
6713
|
|
|
6714 cur_elt--;
|
|
|
6715 if (cur_elt < 0)
|
|
|
6716 {
|
|
|
6717 Bufpos from, to;
|
|
|
6718 int win_char_height;
|
|
|
6719
|
|
|
6720 if (cur_pos <= BUF_BEGV (b))
|
|
|
6721 {
|
|
|
6722 w->line_cache_validation_override--;
|
|
|
6723 return (BUF_BEGV (b));
|
|
|
6724 }
|
|
|
6725
|
|
|
6726 win_char_height = window_char_height (w, 0);
|
|
|
6727 if (!win_char_height)
|
|
|
6728 win_char_height = 1;
|
|
|
6729
|
|
|
6730 from = find_next_newline_no_quit (b, cur_pos, -win_char_height);
|
|
|
6731 to = line_start_cache_end (w);
|
|
|
6732 update_line_start_cache (w, from, to, point, 0);
|
|
|
6733
|
|
|
6734 cur_elt = point_in_line_start_cache (w, cur_pos, 2) - 1;
|
|
|
6735 assert (cur_elt >= 0);
|
|
|
6736 }
|
|
116
|
6737 prev_pos = cur_pos;
|
|
0
|
6738 }
|
|
|
6739 }
|
|
|
6740
|
|
|
6741 /* For window W, what does the starting position have to be so that
|
|
|
6742 the line containing point is on display line LINE. If LINE is
|
|
|
6743 positive it is considered to be the number of lines from the top of
|
|
|
6744 the window (0 is the top line). If it is negative the number is
|
|
|
6745 considered to be the number of lines from the bottom (-1 is the
|
|
|
6746 bottom line). */
|
|
|
6747
|
|
|
6748 Bufpos
|
|
|
6749 start_with_point_on_display_line (struct window *w, Bufpos point, int line)
|
|
|
6750 {
|
|
|
6751 validate_line_start_cache (w);
|
|
|
6752 w->line_cache_validation_override++;
|
|
|
6753
|
|
|
6754 if (line >= 0)
|
|
|
6755 {
|
|
|
6756 int cur_elt = point_in_line_start_cache (w, point, line);
|
|
|
6757
|
|
|
6758 if (cur_elt - line < 0)
|
|
|
6759 cur_elt = 0; /* Hit the top */
|
|
|
6760 else
|
|
|
6761 cur_elt -= line;
|
|
|
6762
|
|
|
6763 w->line_cache_validation_override--;
|
|
|
6764 return (Dynarr_atp (w->line_start_cache, cur_elt)->start);
|
|
|
6765 }
|
|
|
6766 else
|
|
|
6767 {
|
|
|
6768 /* The calculated value of pixpos is correct for the bottom line
|
|
|
6769 or what we want when line is -1. Therefore we subtract one
|
|
|
6770 because we have already handled one line. */
|
|
|
6771 int new_line = -line - 1;
|
|
|
6772 int cur_elt = point_in_line_start_cache (w, point, new_line);
|
|
|
6773 int pixpos = WINDOW_TEXT_BOTTOM (w);
|
|
|
6774 Bufpos retval, search_point;
|
|
|
6775
|
|
|
6776 /* If scroll_on_clipped_lines is false, the last "visible" line of
|
|
|
6777 the window covers the pixel at WINDOW_TEXT_BOTTOM (w) - 1.
|
|
|
6778 If s_o_c_l is true, then we don't want to count a clipped
|
|
|
6779 line, so back up from the bottom by the height of the line
|
|
|
6780 containing point. */
|
|
|
6781 if (scroll_on_clipped_lines)
|
|
|
6782 pixpos -= Dynarr_atp (w->line_start_cache, cur_elt)->height;
|
|
|
6783 else
|
|
|
6784 pixpos -= 1;
|
|
|
6785
|
|
|
6786 if (cur_elt + new_line >= Dynarr_length (w->line_start_cache))
|
|
|
6787 {
|
|
|
6788 /* Hit the bottom of the buffer. */
|
|
|
6789 int adjustment =
|
|
|
6790 (cur_elt + new_line) - Dynarr_length (w->line_start_cache) + 1;
|
|
|
6791 Lisp_Object window = Qnil;
|
|
|
6792 int defheight;
|
|
|
6793
|
|
|
6794 XSETWINDOW (window, w);
|
|
|
6795 default_face_height_and_width (window, &defheight, 0);
|
|
|
6796
|
|
|
6797 cur_elt = Dynarr_length (w->line_start_cache) - 1;
|
|
|
6798
|
|
|
6799 pixpos -= (adjustment * defheight);
|
|
|
6800 if (pixpos < WINDOW_TEXT_TOP (w))
|
|
|
6801 pixpos = WINDOW_TEXT_TOP (w);
|
|
|
6802 }
|
|
|
6803 else
|
|
|
6804 cur_elt = cur_elt + new_line;
|
|
|
6805
|
|
|
6806 search_point = Dynarr_atp (w->line_start_cache, cur_elt)->start;
|
|
|
6807
|
|
|
6808 retval = start_with_line_at_pixpos (w, search_point, pixpos);
|
|
|
6809 w->line_cache_validation_override--;
|
|
|
6810 return retval;
|
|
|
6811 }
|
|
|
6812 }
|
|
|
6813
|
|
|
6814 /* This is used to speed up vertical scrolling by caching the known
|
|
|
6815 buffer starting positions for display lines. This allows the
|
|
|
6816 scrolling routines to avoid costly calls to regenerate_window. If
|
|
|
6817 NO_REGEN is true then it will only add the values in the DESIRED
|
|
|
6818 display structs which are in the given range.
|
|
|
6819
|
|
|
6820 Note also that the FROM/TO values are minimums. It is possible
|
|
|
6821 that this function will actually add information outside of the
|
|
|
6822 lines containing those positions. This can't hurt but it could
|
|
|
6823 possibly help.
|
|
|
6824
|
|
|
6825 #### We currently force the cache to have only 1 contiguous region.
|
|
|
6826 It might help to make the cache a dynarr of caches so that we can
|
|
|
6827 cover more areas. This might, however, turn out to be a lot of
|
|
|
6828 overhead for too little gain. */
|
|
|
6829
|
|
|
6830 static void
|
|
|
6831 update_line_start_cache (struct window *w, Bufpos from, Bufpos to,
|
|
|
6832 Bufpos point, int no_regen)
|
|
|
6833 {
|
|
|
6834 struct buffer *b = XBUFFER (w->buffer);
|
|
|
6835 line_start_cache_dynarr *cache = w->line_start_cache;
|
|
|
6836 Bufpos low_bound, high_bound;
|
|
|
6837
|
|
|
6838 validate_line_start_cache (w);
|
|
|
6839 w->line_cache_validation_override++;
|
|
|
6840 updating_line_start_cache = 1;
|
|
|
6841
|
|
|
6842 if (from < BUF_BEGV (b))
|
|
|
6843 from = BUF_BEGV (b);
|
|
|
6844 if (to > BUF_ZV (b))
|
|
|
6845 to = BUF_ZV (b);
|
|
|
6846
|
|
|
6847 if (from > to)
|
|
|
6848 {
|
|
|
6849 updating_line_start_cache = 0;
|
|
|
6850 w->line_cache_validation_override--;
|
|
|
6851 return;
|
|
|
6852 }
|
|
|
6853
|
|
|
6854 if (Dynarr_length (cache))
|
|
|
6855 {
|
|
|
6856 low_bound = line_start_cache_start (w);
|
|
|
6857 high_bound = line_start_cache_end (w);
|
|
|
6858
|
|
|
6859 /* Check to see if the desired range is already in the cache. */
|
|
|
6860 if (from >= low_bound && to <= high_bound)
|
|
|
6861 {
|
|
|
6862 updating_line_start_cache = 0;
|
|
|
6863 w->line_cache_validation_override--;
|
|
|
6864 return;
|
|
|
6865 }
|
|
|
6866
|
|
|
6867 /* Check to make sure that the desired range is adjacent to the
|
|
|
6868 current cache. If not, invalidate the cache. */
|
|
|
6869 if (to < low_bound || from > high_bound)
|
|
|
6870 {
|
|
|
6871 Dynarr_reset (cache);
|
|
|
6872 low_bound = high_bound = -1;
|
|
|
6873 }
|
|
|
6874 }
|
|
|
6875 else
|
|
|
6876 {
|
|
|
6877 low_bound = high_bound = -1;
|
|
|
6878 }
|
|
|
6879
|
|
|
6880 w->line_cache_last_updated = make_int (BUF_MODIFF (b));
|
|
|
6881
|
|
|
6882 /* This could be integrated into the next two sections, but it is easier
|
|
|
6883 to follow what's going on by having it separate. */
|
|
|
6884 if (no_regen)
|
|
|
6885 {
|
|
|
6886 Bufpos start, end;
|
|
|
6887
|
|
|
6888 update_internal_cache_list (w, DESIRED_DISP);
|
|
|
6889 if (!Dynarr_length (internal_cache))
|
|
|
6890 {
|
|
|
6891 updating_line_start_cache = 0;
|
|
|
6892 w->line_cache_validation_override--;
|
|
|
6893 return;
|
|
|
6894 }
|
|
|
6895
|
|
|
6896 start = Dynarr_atp (internal_cache, 0)->start;
|
|
|
6897 end =
|
|
|
6898 Dynarr_atp (internal_cache, Dynarr_length (internal_cache) - 1)->end;
|
|
|
6899
|
|
|
6900 /* We aren't allowed to generate additional information to fill in
|
|
|
6901 gaps, so if the DESIRED structs don't overlap the cache, reset the
|
|
|
6902 cache. */
|
|
|
6903 if (Dynarr_length (cache))
|
|
|
6904 {
|
|
|
6905 if (end < low_bound || start > high_bound)
|
|
|
6906 Dynarr_reset (cache);
|
|
|
6907
|
|
|
6908 /* #### What should really happen if what we are doing is
|
|
|
6909 extending a line (the last line)? */
|
|
|
6910 if (Dynarr_length (cache) == 1
|
|
|
6911 && Dynarr_length (internal_cache) == 1)
|
|
|
6912 Dynarr_reset (cache);
|
|
|
6913 }
|
|
|
6914
|
|
|
6915 if (!Dynarr_length (cache))
|
|
|
6916 {
|
|
|
6917 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0),
|
|
|
6918 Dynarr_length (internal_cache));
|
|
|
6919 updating_line_start_cache = 0;
|
|
|
6920 w->line_cache_validation_override--;
|
|
|
6921 return;
|
|
|
6922 }
|
|
|
6923
|
|
|
6924 /* An extra check just in case the calling function didn't pass in
|
|
|
6925 the bounds of the DESIRED structs in the first place. */
|
|
|
6926 if (start >= low_bound && end <= high_bound)
|
|
|
6927 {
|
|
|
6928 updating_line_start_cache = 0;
|
|
|
6929 w->line_cache_validation_override--;
|
|
|
6930 return;
|
|
|
6931 }
|
|
|
6932
|
|
|
6933 /* At this point we know that the internal cache partially overlaps
|
|
|
6934 the main cache. */
|
|
|
6935 if (start < low_bound)
|
|
|
6936 {
|
|
|
6937 int ic_elt = Dynarr_length (internal_cache) - 1;
|
|
|
6938 while (ic_elt >= 0)
|
|
|
6939 {
|
|
|
6940 if (Dynarr_atp (internal_cache, ic_elt)->start < low_bound)
|
|
|
6941 break;
|
|
|
6942 else
|
|
|
6943 ic_elt--;
|
|
|
6944 }
|
|
|
6945
|
|
|
6946 if (!(ic_elt >= 0))
|
|
|
6947 {
|
|
|
6948 Dynarr_reset (cache);
|
|
|
6949 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0),
|
|
|
6950 Dynarr_length (internal_cache));
|
|
|
6951 updating_line_start_cache = 0;
|
|
|
6952 w->line_cache_validation_override--;
|
|
|
6953 return;
|
|
|
6954 }
|
|
|
6955
|
|
|
6956 Dynarr_insert_many_at_start (cache, Dynarr_atp (internal_cache, 0),
|
|
|
6957 ic_elt + 1);
|
|
|
6958 }
|
|
|
6959
|
|
|
6960 if (end > high_bound)
|
|
|
6961 {
|
|
|
6962 int ic_elt = 0;
|
|
|
6963
|
|
|
6964 while (ic_elt < Dynarr_length (internal_cache))
|
|
|
6965 {
|
|
|
6966 if (Dynarr_atp (internal_cache, ic_elt)->start > high_bound)
|
|
|
6967 break;
|
|
|
6968 else
|
|
|
6969 ic_elt++;
|
|
|
6970 }
|
|
|
6971
|
|
|
6972 if (!(ic_elt < Dynarr_length (internal_cache)))
|
|
|
6973 {
|
|
|
6974 Dynarr_reset (cache);
|
|
|
6975 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0),
|
|
|
6976 Dynarr_length (internal_cache));
|
|
|
6977 updating_line_start_cache = 0;
|
|
|
6978 w->line_cache_validation_override--;
|
|
|
6979 return;
|
|
|
6980 }
|
|
|
6981
|
|
|
6982 Dynarr_add_many (cache, Dynarr_atp (internal_cache, ic_elt),
|
|
|
6983 Dynarr_length (internal_cache) - ic_elt);
|
|
|
6984 }
|
|
|
6985
|
|
|
6986 updating_line_start_cache = 0;
|
|
|
6987 w->line_cache_validation_override--;
|
|
|
6988 return;
|
|
|
6989 }
|
|
|
6990
|
|
|
6991 if (!Dynarr_length (cache) || from < low_bound)
|
|
|
6992 {
|
|
|
6993 Bufpos startp = find_next_newline_no_quit (b, from, -1);
|
|
|
6994 int marker = 0;
|
|
|
6995 int old_lb = low_bound;
|
|
|
6996
|
|
|
6997 while (startp < old_lb || low_bound == -1)
|
|
|
6998 {
|
|
|
6999 int ic_elt;
|
|
|
7000
|
|
|
7001 regenerate_window (w, startp, point, CMOTION_DISP);
|
|
|
7002 update_internal_cache_list (w, CMOTION_DISP);
|
|
|
7003
|
|
|
7004 /* If this assert is triggered then regenerate_window failed
|
|
|
7005 to layout a single line. That is not supposed to be
|
|
|
7006 possible because we impose a minimum height on the buffer
|
|
|
7007 and override vertical clip when we are in here. */
|
|
|
7008 /* #### Ah, but it is because the window may temporarily
|
|
|
7009 exist but not have any lines at all if the minibuffer is
|
|
|
7010 real big. Look into that situation better. */
|
|
|
7011 if (!Dynarr_length (internal_cache))
|
|
|
7012 {
|
|
|
7013 if (old_lb == -1 && low_bound == -1)
|
|
|
7014 {
|
|
|
7015 updating_line_start_cache = 0;
|
|
|
7016 w->line_cache_validation_override--;
|
|
|
7017 return;
|
|
|
7018 }
|
|
|
7019
|
|
|
7020 assert (Dynarr_length (internal_cache));
|
|
|
7021 }
|
|
|
7022 assert (startp == Dynarr_atp (internal_cache, 0)->start);
|
|
|
7023
|
|
|
7024 ic_elt = Dynarr_length (internal_cache) - 1;
|
|
|
7025 if (low_bound != -1)
|
|
|
7026 {
|
|
|
7027 while (ic_elt >= 0)
|
|
|
7028 {
|
|
|
7029 if (Dynarr_atp (internal_cache, ic_elt)->start < old_lb)
|
|
|
7030 break;
|
|
|
7031 else
|
|
|
7032 ic_elt--;
|
|
|
7033 }
|
|
|
7034 }
|
|
|
7035 assert (ic_elt >= 0);
|
|
|
7036
|
|
|
7037 Dynarr_insert_many (cache, Dynarr_atp (internal_cache, 0),
|
|
|
7038 ic_elt + 1, marker);
|
|
|
7039 marker += (ic_elt + 1);
|
|
|
7040
|
|
|
7041 if (startp < low_bound || low_bound == -1)
|
|
|
7042 low_bound = startp;
|
|
|
7043 startp = Dynarr_atp (internal_cache, ic_elt)->end + 1;
|
|
|
7044 if (startp > BUF_ZV (b))
|
|
|
7045 {
|
|
|
7046 updating_line_start_cache = 0;
|
|
|
7047 w->line_cache_validation_override--;
|
|
|
7048 return;
|
|
|
7049 }
|
|
|
7050 }
|
|
|
7051 }
|
|
|
7052
|
|
|
7053 assert (Dynarr_length (cache));
|
|
|
7054 assert (from >= low_bound);
|
|
|
7055
|
|
|
7056 /* Readjust the high_bound to account for any changes made while
|
|
|
7057 correcting the low_bound. */
|
|
|
7058 high_bound = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end;
|
|
|
7059
|
|
|
7060 if (to > high_bound)
|
|
|
7061 {
|
|
|
7062 Bufpos startp = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end + 1;
|
|
|
7063
|
|
|
7064 do
|
|
|
7065 {
|
|
|
7066 regenerate_window (w, startp, point, CMOTION_DISP);
|
|
|
7067 update_internal_cache_list (w, CMOTION_DISP);
|
|
|
7068
|
|
|
7069 /* See comment above about regenerate_window failing. */
|
|
|
7070 assert (Dynarr_length (internal_cache));
|
|
|
7071
|
|
|
7072 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0),
|
|
|
7073 Dynarr_length (internal_cache));
|
|
|
7074 high_bound = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end;
|
|
|
7075 startp = high_bound + 1;
|
|
|
7076 }
|
|
|
7077 while (to > high_bound);
|
|
|
7078 }
|
|
|
7079
|
|
|
7080 updating_line_start_cache = 0;
|
|
|
7081 w->line_cache_validation_override--;
|
|
|
7082 assert (to <= high_bound);
|
|
|
7083 }
|
|
|
7084
|
|
|
7085
|
|
|
7086 /* Given x and y coordinates in characters, relative to a window,
|
|
|
7087 return the pixel location corresponding to those coordinates. The
|
|
|
7088 pixel location returned is the center of the given character
|
|
|
7089 position. The pixel values are generated relative to the window,
|
|
|
7090 not the frame.
|
|
|
7091
|
|
|
7092 The modeline is considered to be part of the window. */
|
|
|
7093
|
|
|
7094 void
|
|
|
7095 glyph_to_pixel_translation (struct window *w, int char_x, int char_y,
|
|
|
7096 int *pix_x, int *pix_y)
|
|
|
7097 {
|
|
|
7098 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP);
|
|
|
7099 int num_disp_lines, modeline;
|
|
|
7100 Lisp_Object window = Qnil;
|
|
|
7101 int defheight, defwidth;
|
|
|
7102
|
|
|
7103 XSETWINDOW (window, w);
|
|
|
7104 default_face_height_and_width (window, &defheight, &defwidth);
|
|
|
7105
|
|
|
7106 /* If we get a bogus value indicating somewhere above or to the left of
|
|
|
7107 the window, use the first window line or character position
|
|
|
7108 instead. */
|
|
|
7109 if (char_y < 0)
|
|
|
7110 char_y = 0;
|
|
|
7111 if (char_x < 0)
|
|
|
7112 char_x = 0;
|
|
|
7113
|
|
|
7114 num_disp_lines = Dynarr_length (dla);
|
|
|
7115 modeline = 0;
|
|
|
7116 if (num_disp_lines)
|
|
|
7117 {
|
|
|
7118 if (Dynarr_atp (dla, 0)->modeline)
|
|
|
7119 {
|
|
|
7120 num_disp_lines--;
|
|
|
7121 modeline = 1;
|
|
|
7122 }
|
|
|
7123 }
|
|
|
7124
|
|
|
7125 /* First check if the y position intersects the display lines. */
|
|
|
7126 if (char_y < num_disp_lines)
|
|
|
7127 {
|
|
|
7128 struct display_line *dl = Dynarr_atp (dla, char_y + modeline);
|
|
|
7129 struct display_block *db = get_display_block_from_line (dl, TEXT);
|
|
|
7130
|
|
|
7131 *pix_y = (dl->ypos - dl->ascent +
|
|
|
7132 ((unsigned int) (dl->ascent + dl->descent - dl->clip) >> 1));
|
|
|
7133
|
|
|
7134 if (char_x < Dynarr_length (db->runes))
|
|
|
7135 {
|
|
|
7136 struct rune *rb = Dynarr_atp (db->runes, char_x);
|
|
|
7137
|
|
|
7138 *pix_x = rb->xpos + (rb->width >> 1);
|
|
|
7139 }
|
|
|
7140 else
|
|
|
7141 {
|
|
|
7142 int last_rune = Dynarr_length (db->runes) - 1;
|
|
|
7143 struct rune *rb = Dynarr_atp (db->runes, last_rune);
|
|
|
7144
|
|
|
7145 char_x -= last_rune;
|
|
|
7146
|
|
|
7147 *pix_x = rb->xpos + rb->width;
|
|
|
7148 *pix_x += ((char_x - 1) * defwidth);
|
|
|
7149 *pix_x += (defwidth >> 1);
|
|
|
7150 }
|
|
|
7151 }
|
|
|
7152 else
|
|
|
7153 {
|
|
|
7154 /* It didn't intersect, so extrapolate. #### For now, we include the
|
|
|
7155 modeline in this since we don't have true character positions in
|
|
|
7156 it. */
|
|
|
7157
|
|
|
7158 if (!Dynarr_length (w->face_cachels))
|
|
|
7159 reset_face_cachels (w);
|
|
|
7160
|
|
|
7161 char_y -= num_disp_lines;
|
|
|
7162
|
|
|
7163 if (Dynarr_length (dla))
|
|
|
7164 {
|
|
|
7165 struct display_line *dl = Dynarr_atp (dla, Dynarr_length (dla) - 1);
|
|
|
7166 *pix_y = dl->ypos + dl->descent - dl->clip;
|
|
|
7167 }
|
|
|
7168 else
|
|
|
7169 *pix_y = WINDOW_TEXT_TOP (w);
|
|
|
7170
|
|
|
7171 *pix_y += (char_y * defheight);
|
|
|
7172 *pix_y += (defheight >> 1);
|
|
|
7173
|
|
|
7174 *pix_x = WINDOW_TEXT_LEFT (w);
|
|
|
7175 /* Don't adjust by one because this is still the unadjusted value. */
|
|
|
7176 *pix_x += (char_x * defwidth);
|
|
|
7177 *pix_x += (defwidth >> 1);
|
|
|
7178 }
|
|
|
7179
|
|
|
7180 if (*pix_x > w->pixel_left + w->pixel_width)
|
|
|
7181 *pix_x = w->pixel_left + w->pixel_width;
|
|
|
7182 if (*pix_y > w->pixel_top + w->pixel_height)
|
|
|
7183 *pix_y = w->pixel_top + w->pixel_height;
|
|
|
7184
|
|
|
7185 *pix_x -= w->pixel_left;
|
|
|
7186 *pix_y -= w->pixel_top;
|
|
|
7187 }
|
|
|
7188
|
|
|
7189 /* Given a display line and a position, determine if there is a glyph
|
|
|
7190 there and return information about it if there is. */
|
|
|
7191
|
|
|
7192 static void
|
|
|
7193 get_position_object (struct display_line *dl, Lisp_Object *obj1,
|
|
|
7194 Lisp_Object *obj2, int x_coord, int *low_x_coord,
|
|
|
7195 int *high_x_coord)
|
|
|
7196 {
|
|
|
7197 struct display_block *db;
|
|
|
7198 int elt;
|
|
|
7199 int block =
|
|
|
7200 get_next_display_block (dl->bounds, dl->display_blocks, x_coord, 0);
|
|
|
7201
|
|
|
7202 /* We use get_next_display_block to get the actual display block
|
|
|
7203 that would be displayed at x_coord. */
|
|
|
7204
|
|
|
7205 if (block == NO_BLOCK)
|
|
|
7206 return;
|
|
|
7207 else
|
|
|
7208 db = Dynarr_atp (dl->display_blocks, block);
|
|
|
7209
|
|
|
7210 for (elt = 0; elt < Dynarr_length (db->runes); elt++)
|
|
|
7211 {
|
|
|
7212 struct rune *rb = Dynarr_atp (db->runes, elt);
|
|
|
7213
|
|
|
7214 if (rb->xpos <= x_coord && x_coord < (rb->xpos + rb->width))
|
|
|
7215 {
|
|
|
7216 if (rb->type == RUNE_DGLYPH)
|
|
|
7217 {
|
|
|
7218 *obj1 = rb->object.dglyph.glyph;
|
|
|
7219 *obj2 = rb->object.dglyph.extent;
|
|
|
7220 }
|
|
|
7221 else
|
|
|
7222 {
|
|
|
7223 *obj1 = Qnil;
|
|
|
7224 *obj2 = Qnil;
|
|
|
7225 }
|
|
|
7226
|
|
|
7227 if (low_x_coord)
|
|
|
7228 *low_x_coord = rb->xpos;
|
|
|
7229 if (high_x_coord)
|
|
|
7230 *high_x_coord = rb->xpos + rb->width;
|
|
|
7231
|
|
|
7232 return;
|
|
|
7233 }
|
|
|
7234 }
|
|
|
7235 }
|
|
|
7236
|
|
|
7237 #define UPDATE_CACHE_RETURN \
|
|
|
7238 do { \
|
|
|
7239 d->pixel_to_glyph_cache.valid = 1; \
|
|
|
7240 d->pixel_to_glyph_cache.low_x_coord = low_x_coord; \
|
|
|
7241 d->pixel_to_glyph_cache.high_x_coord = high_x_coord; \
|
|
|
7242 d->pixel_to_glyph_cache.low_y_coord = low_y_coord; \
|
|
|
7243 d->pixel_to_glyph_cache.high_y_coord = high_y_coord; \
|
|
|
7244 d->pixel_to_glyph_cache.frame = f; \
|
|
|
7245 d->pixel_to_glyph_cache.col = *col; \
|
|
|
7246 d->pixel_to_glyph_cache.row = *row; \
|
|
|
7247 d->pixel_to_glyph_cache.obj_x = *obj_x; \
|
|
|
7248 d->pixel_to_glyph_cache.obj_y = *obj_y; \
|
|
|
7249 d->pixel_to_glyph_cache.w = *w; \
|
|
|
7250 d->pixel_to_glyph_cache.bufpos = *bufpos; \
|
|
|
7251 d->pixel_to_glyph_cache.closest = *closest; \
|
|
|
7252 d->pixel_to_glyph_cache.modeline_closest = *modeline_closest; \
|
|
|
7253 d->pixel_to_glyph_cache.obj1 = *obj1; \
|
|
|
7254 d->pixel_to_glyph_cache.obj2 = *obj2; \
|
|
|
7255 d->pixel_to_glyph_cache.retval = position; \
|
|
|
7256 RETURN__ position; \
|
|
|
7257 } while (0)
|
|
|
7258
|
|
|
7259 /* Given x and y coordinates in pixels relative to a frame, return
|
|
|
7260 information about what is located under those coordinates.
|
|
|
7261
|
|
|
7262 The return value will be one of:
|
|
|
7263
|
|
|
7264 OVER_TOOLBAR: over one of the 4 frame toolbars
|
|
|
7265 OVER_MODELINE: over a modeline
|
|
|
7266 OVER_BORDER: over an internal border
|
|
|
7267 OVER_NOTHING: over the text area, but not over text
|
|
|
7268 OVER_OUTSIDE: outside of the frame border
|
|
|
7269 OVER_TEXT: over text in the text area
|
|
|
7270
|
|
|
7271 OBJ1 is one of
|
|
|
7272
|
|
|
7273 -- a toolbar button
|
|
|
7274 -- a glyph
|
|
|
7275 -- nil if the coordinates are not over a glyph or a toolbar button.
|
|
|
7276
|
|
|
7277 OBJ2 is one of
|
|
|
7278
|
|
|
7279 -- an extent, if the coordinates are over a glyph in the text area
|
|
|
7280 -- nil otherwise.
|
|
|
7281
|
|
|
7282 If the coordinates are over a glyph, OBJ_X and OBJ_Y give the
|
|
|
7283 equivalent coordinates relative to the upper-left corner of the glyph.
|
|
|
7284
|
|
|
7285 If the coordinates are over a character, OBJ_X and OBJ_Y give the
|
|
|
7286 equivalent coordinates relative to the upper-left corner of the character.
|
|
|
7287
|
|
|
7288 Otherwise, OBJ_X and OBJ_Y are undefined.
|
|
|
7289 */
|
|
|
7290
|
|
|
7291 int
|
|
|
7292 pixel_to_glyph_translation (struct frame *f, int x_coord, int y_coord,
|
|
|
7293 int *col, int *row, int *obj_x, int *obj_y,
|
|
|
7294 struct window **w, Bufpos *bufpos,
|
|
|
7295 Bufpos *closest, Charcount *modeline_closest,
|
|
|
7296 Lisp_Object *obj1, Lisp_Object *obj2)
|
|
|
7297 {
|
|
|
7298 struct device *d;
|
|
|
7299 struct pixel_to_glyph_translation_cache *cache;
|
|
|
7300 Lisp_Object window;
|
|
|
7301 int frm_left, frm_right, frm_top, frm_bottom;
|
|
|
7302 int low_x_coord, high_x_coord, low_y_coord, high_y_coord;
|
|
|
7303 int position = OVER_NOTHING;
|
|
|
7304 int device_check_failed = 0;
|
|
|
7305 display_line_dynarr *dla;
|
|
|
7306
|
|
|
7307 /* This is a safety valve in case this got called with a frame in
|
|
|
7308 the middle of being deleted. */
|
|
|
7309 if (!DEVICEP (f->device) || !DEVICE_LIVE_P (XDEVICE (f->device)))
|
|
|
7310 device_check_failed = 1;
|
|
|
7311 else
|
|
|
7312 {
|
|
|
7313 d = XDEVICE (f->device);
|
|
|
7314 cache = &d->pixel_to_glyph_cache;
|
|
|
7315 }
|
|
|
7316
|
|
|
7317 if (!device_check_failed
|
|
|
7318 && cache->valid
|
|
|
7319 && cache->frame == f
|
|
|
7320 && cache->low_x_coord <= x_coord
|
|
|
7321 && cache->high_x_coord > x_coord
|
|
|
7322 && cache->low_y_coord <= y_coord
|
|
|
7323 && cache->high_y_coord > y_coord)
|
|
|
7324 {
|
|
|
7325 *col = cache->col;
|
|
|
7326 *row = cache->row;
|
|
|
7327 *obj_x = cache->obj_x;
|
|
|
7328 *obj_y = cache->obj_y;
|
|
|
7329 *w = cache->w;
|
|
|
7330 *bufpos = cache->bufpos;
|
|
|
7331 *closest = cache->closest;
|
|
|
7332 *modeline_closest = cache->modeline_closest;
|
|
|
7333 *obj1 = cache->obj1;
|
|
|
7334 *obj2 = cache->obj2;
|
|
|
7335
|
|
|
7336 return cache->retval;
|
|
|
7337 }
|
|
|
7338 else
|
|
|
7339 {
|
|
|
7340 *col = 0;
|
|
|
7341 *row = 0;
|
|
|
7342 *obj_x = 0;
|
|
|
7343 *obj_y = 0;
|
|
|
7344 *w = 0;
|
|
|
7345 *bufpos = 0;
|
|
|
7346 *closest = 0;
|
|
|
7347 *modeline_closest = -1;
|
|
|
7348 *obj1 = Qnil;
|
|
|
7349 *obj2 = Qnil;
|
|
|
7350
|
|
|
7351 low_x_coord = x_coord;
|
|
|
7352 high_x_coord = x_coord + 1;
|
|
|
7353 low_y_coord = y_coord;
|
|
|
7354 high_y_coord = y_coord + 1;
|
|
|
7355 }
|
|
|
7356
|
|
|
7357 if (device_check_failed)
|
|
|
7358 return OVER_NOTHING;
|
|
|
7359
|
|
|
7360 frm_left = FRAME_LEFT_BORDER_END (f);
|
|
|
7361 frm_right = FRAME_RIGHT_BORDER_START (f);
|
|
|
7362 frm_top = FRAME_TOP_BORDER_END (f);
|
|
|
7363 frm_bottom = FRAME_BOTTOM_BORDER_START (f);
|
|
|
7364
|
|
|
7365 /* Check if the mouse is outside of the text area actually used by
|
|
|
7366 redisplay. */
|
|
|
7367 if (y_coord < frm_top)
|
|
|
7368 {
|
|
|
7369 if (y_coord >= FRAME_TOP_BORDER_START (f))
|
|
|
7370 {
|
|
|
7371 low_y_coord = FRAME_TOP_BORDER_START (f);
|
|
|
7372 high_y_coord = frm_top;
|
|
|
7373 position = OVER_BORDER;
|
|
|
7374 }
|
|
|
7375 else if (y_coord >= 0)
|
|
|
7376 {
|
|
|
7377 low_y_coord = 0;
|
|
|
7378 high_y_coord = FRAME_TOP_BORDER_START (f);
|
|
|
7379 position = OVER_TOOLBAR;
|
|
|
7380 }
|
|
|
7381 else
|
|
|
7382 {
|
|
|
7383 low_y_coord = y_coord;
|
|
|
7384 high_y_coord = 0;
|
|
|
7385 position = OVER_OUTSIDE;
|
|
|
7386 }
|
|
|
7387 }
|
|
|
7388 else if (y_coord >= frm_bottom)
|
|
|
7389 {
|
|
|
7390 if (y_coord < FRAME_BOTTOM_BORDER_END (f))
|
|
|
7391 {
|
|
|
7392 low_y_coord = frm_bottom;
|
|
|
7393 high_y_coord = FRAME_BOTTOM_BORDER_END (f);
|
|
|
7394 position = OVER_BORDER;
|
|
|
7395 }
|
|
|
7396 else if (y_coord < FRAME_PIXHEIGHT (f))
|
|
|
7397 {
|
|
|
7398 low_y_coord = FRAME_BOTTOM_BORDER_END (f);
|
|
|
7399 high_y_coord = FRAME_PIXHEIGHT (f);
|
|
|
7400 position = OVER_TOOLBAR;
|
|
|
7401 }
|
|
|
7402 else
|
|
|
7403 {
|
|
|
7404 low_y_coord = FRAME_PIXHEIGHT (f);
|
|
|
7405 high_y_coord = y_coord;
|
|
|
7406 position = OVER_OUTSIDE;
|
|
|
7407 }
|
|
|
7408 }
|
|
|
7409
|
|
|
7410 if (position != OVER_TOOLBAR && position != OVER_BORDER)
|
|
|
7411 {
|
|
|
7412 if (x_coord < frm_left)
|
|
|
7413 {
|
|
|
7414 if (x_coord >= FRAME_LEFT_BORDER_START (f))
|
|
|
7415 {
|
|
|
7416 low_x_coord = FRAME_LEFT_BORDER_START (f);
|
|
|
7417 high_x_coord = frm_left;
|
|
|
7418 position = OVER_BORDER;
|
|
|
7419 }
|
|
|
7420 else if (x_coord >= 0)
|
|
|
7421 {
|
|
|
7422 low_x_coord = 0;
|
|
|
7423 high_x_coord = FRAME_LEFT_BORDER_START (f);
|
|
|
7424 position = OVER_TOOLBAR;
|
|
|
7425 }
|
|
|
7426 else
|
|
|
7427 {
|
|
|
7428 low_x_coord = x_coord;
|
|
|
7429 high_x_coord = 0;
|
|
|
7430 position = OVER_OUTSIDE;
|
|
|
7431 }
|
|
|
7432 }
|
|
|
7433 else if (x_coord >= frm_right)
|
|
|
7434 {
|
|
|
7435 if (x_coord < FRAME_RIGHT_BORDER_END (f))
|
|
|
7436 {
|
|
|
7437 low_x_coord = frm_right;
|
|
|
7438 high_x_coord = FRAME_RIGHT_BORDER_END (f);
|
|
|
7439 position = OVER_BORDER;
|
|
|
7440 }
|
|
|
7441 else if (x_coord < FRAME_PIXWIDTH (f))
|
|
|
7442 {
|
|
|
7443 low_x_coord = FRAME_RIGHT_BORDER_END (f);
|
|
|
7444 high_x_coord = FRAME_PIXWIDTH (f);
|
|
|
7445 position = OVER_TOOLBAR;
|
|
|
7446 }
|
|
|
7447 else
|
|
|
7448 {
|
|
|
7449 low_x_coord = FRAME_PIXWIDTH (f);
|
|
|
7450 high_x_coord = x_coord;
|
|
|
7451 position = OVER_OUTSIDE;
|
|
|
7452 }
|
|
|
7453 }
|
|
|
7454 }
|
|
|
7455
|
|
|
7456 #ifdef HAVE_TOOLBARS
|
|
|
7457 if (position == OVER_TOOLBAR)
|
|
|
7458 {
|
|
|
7459 *obj1 = toolbar_button_at_pixpos (f, x_coord, y_coord);
|
|
|
7460 *obj2 = Qnil;
|
|
|
7461 *w = 0;
|
|
|
7462 UPDATE_CACHE_RETURN;
|
|
|
7463 }
|
|
|
7464 #endif
|
|
|
7465
|
|
|
7466 /* We still have to return the window the pointer is next to and its
|
|
|
7467 relative y position even if it is outside the x boundary. */
|
|
|
7468 if (x_coord < frm_left)
|
|
|
7469 x_coord = frm_left;
|
|
|
7470 else if (x_coord > frm_right)
|
|
|
7471 x_coord = frm_right;
|
|
|
7472
|
|
|
7473 /* Same in reverse. */
|
|
|
7474 if (y_coord < frm_top)
|
|
|
7475 y_coord = frm_top;
|
|
|
7476 else if (y_coord > frm_bottom)
|
|
|
7477 y_coord = frm_bottom;
|
|
|
7478
|
|
|
7479 /* Find what window the given coordinates are actually in. */
|
|
|
7480 window = f->root_window;
|
|
|
7481 *w = find_window_by_pixel_pos (x_coord, y_coord, window);
|
|
|
7482
|
|
|
7483 /* If we didn't find a window, we're done. */
|
|
|
7484 if (!*w)
|
|
|
7485 {
|
|
|
7486 UPDATE_CACHE_RETURN;
|
|
|
7487 }
|
|
|
7488 else if (position != OVER_NOTHING)
|
|
|
7489 {
|
|
|
7490 *closest = 0;
|
|
|
7491 *modeline_closest = -1;
|
|
|
7492
|
|
|
7493 if (high_y_coord <= frm_top || high_y_coord >= frm_bottom)
|
|
|
7494 {
|
|
|
7495 *w = 0;
|
|
|
7496 UPDATE_CACHE_RETURN;
|
|
|
7497 }
|
|
|
7498 }
|
|
|
7499
|
|
|
7500 /* Check if the window is a minibuffer but isn't active. */
|
|
|
7501 if (MINI_WINDOW_P (*w) && !minibuf_level)
|
|
|
7502 {
|
|
|
7503 /* Must reset the window value since some callers will ignore
|
|
|
7504 the return value if it is set. */
|
|
|
7505 *w = 0;
|
|
|
7506 UPDATE_CACHE_RETURN;
|
|
|
7507 }
|
|
|
7508
|
|
|
7509 dla = window_display_lines (*w, CURRENT_DISP);
|
|
|
7510
|
|
|
7511 for (*row = 0; *row < Dynarr_length (dla); (*row)++)
|
|
|
7512 {
|
|
|
7513 int really_over_nothing = 0;
|
|
|
7514 struct display_line *dl = Dynarr_atp (dla, *row);
|
|
|
7515
|
|
|
7516 if ((int) (dl->ypos - dl->ascent) <= y_coord
|
|
|
7517 && y_coord <= (int) (dl->ypos + dl->descent))
|
|
|
7518 {
|
|
|
7519 int check_margin_glyphs = 0;
|
|
|
7520 struct display_block *db = get_display_block_from_line (dl, TEXT);
|
|
|
7521 struct rune *rb = 0;
|
|
|
7522
|
|
|
7523 if (x_coord < dl->bounds.left_white
|
|
|
7524 || x_coord >= dl->bounds.right_white)
|
|
|
7525 check_margin_glyphs = 1;
|
|
|
7526
|
|
|
7527 low_y_coord = dl->ypos - dl->ascent;
|
|
|
7528 high_y_coord = dl->ypos + dl->descent + 1;
|
|
|
7529
|
|
|
7530 if (position == OVER_BORDER
|
|
|
7531 || position == OVER_OUTSIDE
|
|
|
7532 || check_margin_glyphs)
|
|
|
7533 {
|
|
|
7534 int x_check, left_bound;
|
|
|
7535
|
|
|
7536 if (check_margin_glyphs)
|
|
|
7537 {
|
|
|
7538 x_check = x_coord;
|
|
|
7539 left_bound = dl->bounds.left_white;
|
|
|
7540 }
|
|
|
7541 else
|
|
|
7542 {
|
|
|
7543 x_check = high_x_coord;
|
|
|
7544 left_bound = frm_left;
|
|
|
7545 }
|
|
|
7546
|
|
|
7547 if (Dynarr_length (db->runes))
|
|
|
7548 {
|
|
|
7549 if (x_check <= left_bound)
|
|
|
7550 {
|
|
|
7551 if (dl->modeline)
|
|
|
7552 *modeline_closest = Dynarr_atp (db->runes, 0)->bufpos;
|
|
|
7553 else
|
|
|
7554 *closest = Dynarr_atp (db->runes, 0)->bufpos;
|
|
|
7555 }
|
|
|
7556 else
|
|
|
7557 {
|
|
|
7558 if (dl->modeline)
|
|
|
7559 *modeline_closest =
|
|
|
7560 Dynarr_atp (db->runes,
|
|
|
7561 Dynarr_length (db->runes) - 1)->bufpos;
|
|
|
7562 else
|
|
|
7563 *closest =
|
|
|
7564 Dynarr_atp (db->runes,
|
|
70
|
7565 Dynarr_length (db->runes) - 1)->bufpos;
|
|
0
|
7566 }
|
|
|
7567
|
|
|
7568 if (dl->modeline)
|
|
|
7569 *modeline_closest += dl->offset;
|
|
|
7570 else
|
|
|
7571 *closest += dl->offset;
|
|
|
7572 }
|
|
|
7573 else
|
|
|
7574 {
|
|
|
7575 /* #### What should be here. */
|
|
|
7576 if (dl->modeline)
|
|
|
7577 *modeline_closest = 0;
|
|
|
7578 else
|
|
|
7579 *closest = 0;
|
|
|
7580 }
|
|
|
7581
|
|
|
7582 if (check_margin_glyphs)
|
|
|
7583 {
|
|
|
7584 if (x_coord < dl->bounds.left_in
|
|
|
7585 || x_coord >= dl->bounds.right_in)
|
|
|
7586 {
|
|
|
7587 /* If we are over the outside margins then we
|
|
|
7588 know the loop over the text block isn't going
|
|
|
7589 to accomplish anything. So we go ahead and
|
|
|
7590 set what information we can right here and
|
|
|
7591 return. */
|
|
|
7592 (*row)--;
|
|
|
7593 *obj_y = y_coord - (dl->ypos - dl->ascent);
|
|
|
7594 get_position_object (dl, obj1, obj2, x_coord,
|
|
|
7595 &low_x_coord, &high_x_coord);
|
|
|
7596
|
|
|
7597 UPDATE_CACHE_RETURN;
|
|
|
7598 }
|
|
|
7599 }
|
|
|
7600 else
|
|
|
7601 UPDATE_CACHE_RETURN;
|
|
|
7602 }
|
|
|
7603
|
|
|
7604 for (*col = 0; *col <= Dynarr_length (db->runes); (*col)++)
|
|
|
7605 {
|
|
|
7606 int past_end = (*col == Dynarr_length (db->runes));
|
|
|
7607
|
|
|
7608 if (!past_end)
|
|
|
7609 rb = Dynarr_atp (db->runes, *col);
|
|
|
7610
|
|
|
7611 if (past_end ||
|
|
|
7612 (rb->xpos <= x_coord && x_coord < rb->xpos + rb->width))
|
|
|
7613 {
|
|
|
7614 if (past_end)
|
|
|
7615 {
|
|
|
7616 (*col)--;
|
|
|
7617 rb = Dynarr_atp (db->runes, *col);
|
|
|
7618 }
|
|
|
7619
|
|
|
7620 *bufpos = rb->bufpos + dl->offset;
|
|
|
7621 low_x_coord = rb->xpos;
|
|
|
7622 high_x_coord = rb->xpos + rb->width;
|
|
|
7623
|
|
|
7624 if (rb->type == RUNE_DGLYPH)
|
|
|
7625 {
|
|
|
7626 int elt = *col + 1;
|
|
|
7627
|
|
|
7628 /* Find the first character after the glyph. */
|
|
|
7629 while (elt < Dynarr_length (db->runes))
|
|
|
7630 {
|
|
|
7631 if (Dynarr_atp (db->runes, elt)->type != RUNE_DGLYPH)
|
|
|
7632 {
|
|
|
7633 if (dl->modeline)
|
|
|
7634 *modeline_closest =
|
|
|
7635 (Dynarr_atp (db->runes, elt)->bufpos +
|
|
|
7636 dl->offset);
|
|
|
7637 else
|
|
|
7638 *closest =
|
|
|
7639 (Dynarr_atp (db->runes, elt)->bufpos +
|
|
|
7640 dl->offset);
|
|
|
7641 break;
|
|
|
7642 }
|
|
|
7643
|
|
|
7644 elt++;
|
|
|
7645 }
|
|
|
7646
|
|
|
7647 /* In this case we failed to find a non-glyph
|
|
|
7648 character so we return the last position
|
|
|
7649 displayed on the line. */
|
|
|
7650 if (elt == Dynarr_length (db->runes))
|
|
|
7651 {
|
|
|
7652 if (dl->modeline)
|
|
|
7653 *modeline_closest = dl->end_bufpos + dl->offset;
|
|
|
7654 else
|
|
|
7655 *closest = dl->end_bufpos + dl->offset;
|
|
|
7656 really_over_nothing = 1;
|
|
|
7657 }
|
|
|
7658 }
|
|
|
7659 else
|
|
|
7660 {
|
|
|
7661 if (dl->modeline)
|
|
|
7662 *modeline_closest = rb->bufpos + dl->offset;
|
|
|
7663 else
|
|
|
7664 *closest = rb->bufpos + dl->offset;
|
|
|
7665 }
|
|
|
7666
|
|
|
7667 if (dl->modeline)
|
|
|
7668 {
|
|
|
7669 *row = window_displayed_height (*w);
|
|
|
7670
|
|
|
7671 if (position == OVER_NOTHING)
|
|
|
7672 position = OVER_MODELINE;
|
|
|
7673
|
|
|
7674 if (rb->type == RUNE_DGLYPH)
|
|
|
7675 {
|
|
|
7676 *obj1 = rb->object.dglyph.glyph;
|
|
|
7677 *obj2 = rb->object.dglyph.extent;
|
|
|
7678 }
|
|
|
7679 else if (rb->type == RUNE_CHAR)
|
|
|
7680 {
|
|
|
7681 *obj1 = Qnil;
|
|
|
7682 *obj2 = Qnil;
|
|
|
7683 }
|
|
|
7684 else
|
|
|
7685 {
|
|
|
7686 *obj1 = Qnil;
|
|
|
7687 *obj2 = Qnil;
|
|
|
7688 }
|
|
|
7689
|
|
|
7690 UPDATE_CACHE_RETURN;
|
|
|
7691 }
|
|
|
7692 else if (past_end
|
|
|
7693 || (rb->type == RUNE_CHAR
|
|
|
7694 && rb->object.chr.ch == '\n'))
|
|
|
7695 {
|
|
|
7696 (*row)--;
|
|
|
7697 /* At this point we may have glyphs in the right
|
|
|
7698 inside margin. */
|
|
|
7699 if (check_margin_glyphs)
|
|
|
7700 get_position_object (dl, obj1, obj2, x_coord,
|
|
|
7701 &low_x_coord, &high_x_coord);
|
|
|
7702 UPDATE_CACHE_RETURN;
|
|
|
7703 }
|
|
|
7704 else
|
|
|
7705 {
|
|
|
7706 (*row)--;
|
|
|
7707 if (rb->type == RUNE_DGLYPH)
|
|
|
7708 {
|
|
|
7709 *obj1 = rb->object.dglyph.glyph;
|
|
|
7710 *obj2 = rb->object.dglyph.extent;
|
|
|
7711 }
|
|
|
7712 else if (rb->type == RUNE_CHAR)
|
|
|
7713 {
|
|
|
7714 *obj1 = Qnil;
|
|
|
7715 *obj2 = Qnil;
|
|
|
7716 }
|
|
|
7717 else
|
|
|
7718 {
|
|
|
7719 *obj1 = Qnil;
|
|
|
7720 *obj2 = Qnil;
|
|
|
7721 }
|
|
|
7722
|
|
|
7723 *obj_x = x_coord - rb->xpos;
|
|
|
7724 *obj_y = y_coord - (dl->ypos - dl->ascent);
|
|
|
7725
|
|
|
7726 /* At this point we may have glyphs in the left
|
|
|
7727 inside margin. */
|
|
|
7728 if (check_margin_glyphs)
|
|
|
7729 get_position_object (dl, obj1, obj2, x_coord, 0, 0);
|
|
|
7730
|
|
|
7731 if (position == OVER_NOTHING && !really_over_nothing)
|
|
|
7732 position = OVER_TEXT;
|
|
|
7733
|
|
|
7734 UPDATE_CACHE_RETURN;
|
|
|
7735 }
|
|
|
7736 }
|
|
|
7737 }
|
|
|
7738 }
|
|
|
7739 }
|
|
|
7740
|
|
|
7741 *row = Dynarr_length (dla) - 1;
|
|
|
7742 if (FRAME_WIN_P (f))
|
|
|
7743 {
|
|
|
7744 int bot_elt = Dynarr_length (dla) - 1;
|
|
|
7745
|
|
|
7746 if (bot_elt >= 0)
|
|
|
7747 {
|
|
|
7748 struct display_line *dl = Dynarr_atp (dla, bot_elt);
|
|
|
7749 int adj_area = y_coord - (dl->ypos + dl->descent);
|
|
|
7750 Lisp_Object lwin = Qnil;
|
|
|
7751 int defheight;
|
|
|
7752
|
|
|
7753 XSETWINDOW (lwin, *w);
|
|
|
7754 default_face_height_and_width (lwin, 0, &defheight);
|
|
|
7755
|
|
|
7756 *row += (adj_area / defheight);
|
|
|
7757 }
|
|
|
7758 }
|
|
|
7759
|
|
|
7760 /* #### This should be checked out some more to determine what
|
|
|
7761 should really be going on. */
|
|
|
7762 if (!MARKERP ((*w)->start[CURRENT_DISP]))
|
|
|
7763 *closest = 0;
|
|
|
7764 else
|
|
|
7765 *closest = end_of_last_line (*w,
|
|
|
7766 marker_position ((*w)->start[CURRENT_DISP]));
|
|
|
7767 *col = 0;
|
|
|
7768 UPDATE_CACHE_RETURN;
|
|
|
7769 }
|
|
|
7770 #undef UPDATE_CACHE_RETURN
|
|
|
7771
|
|
|
7772
|
|
|
7773 /***************************************************************************/
|
|
|
7774 /* */
|
|
|
7775 /* Lisp functions */
|
|
|
7776 /* */
|
|
|
7777 /***************************************************************************/
|
|
|
7778
|
|
20
|
7779 DEFUN ("redisplay-echo-area", Fredisplay_echo_area, 0, 0, 0, /*
|
|
0
|
7780 Ensure that all minibuffers are correctly showing the echo area.
|
|
20
|
7781 */
|
|
|
7782 ())
|
|
0
|
7783 {
|
|
|
7784 Lisp_Object devcons, concons;
|
|
|
7785
|
|
|
7786 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
7787 {
|
|
|
7788 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
7789 Lisp_Object frmcons;
|
|
|
7790
|
|
|
7791 DEVICE_FRAME_LOOP (frmcons, d)
|
|
|
7792 {
|
|
|
7793 struct frame *f = XFRAME (XCAR (frmcons));
|
|
|
7794
|
|
108
|
7795 if (FRAME_REPAINT_P (f) && FRAME_HAS_MINIBUF_P (f))
|
|
0
|
7796 {
|
|
|
7797 Lisp_Object window = FRAME_MINIBUF_WINDOW (f);
|
|
|
7798 redisplay_window (window, 0);
|
|
|
7799 call_redisplay_end_triggers (XWINDOW (window), 0);
|
|
|
7800 }
|
|
|
7801 }
|
|
|
7802
|
|
|
7803 /* We now call the output_end routine for tty frames. We delay
|
|
|
7804 doing so in order to avoid cursor flicker. So much for 100%
|
|
|
7805 encapsulation. */
|
|
|
7806 if (DEVICE_TTY_P (d))
|
|
|
7807 DEVMETH (d, output_end, (d));
|
|
|
7808 }
|
|
|
7809
|
|
|
7810 return Qnil;
|
|
|
7811 }
|
|
|
7812
|
|
|
7813 static Lisp_Object
|
|
|
7814 restore_disable_preemption_value (Lisp_Object value)
|
|
|
7815 {
|
|
|
7816 disable_preemption = XINT (value);
|
|
|
7817 return Qnil;
|
|
|
7818 }
|
|
|
7819
|
|
20
|
7820 DEFUN ("redraw-frame", Fredraw_frame, 0, 2, 0, /*
|
|
0
|
7821 Clear frame FRAME and output again what is supposed to appear on it.
|
|
|
7822 FRAME defaults to the selected frame if omitted.
|
|
|
7823 Normally, redisplay is preempted as normal if input arrives. However,
|
|
|
7824 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for
|
|
|
7825 input and is guaranteed to proceed to completion.
|
|
20
|
7826 */
|
|
|
7827 (frame, no_preempt))
|
|
0
|
7828 {
|
|
|
7829 struct frame *f = decode_frame (frame);
|
|
|
7830 int count = specpdl_depth ();
|
|
|
7831
|
|
|
7832 if (!NILP (no_preempt))
|
|
|
7833 {
|
|
|
7834 record_unwind_protect (restore_disable_preemption_value,
|
|
|
7835 make_int (disable_preemption));
|
|
|
7836 disable_preemption++;
|
|
|
7837 }
|
|
|
7838
|
|
|
7839 f->clear = 1;
|
|
|
7840 redisplay_frame (f, 1);
|
|
|
7841
|
|
|
7842 return unbind_to (count, Qnil);
|
|
|
7843 }
|
|
|
7844
|
|
20
|
7845 DEFUN ("redisplay-frame", Fredisplay_frame, 0, 2, 0, /*
|
|
0
|
7846 Ensure that FRAME's contents are correctly displayed.
|
|
|
7847 This differs from `redraw-frame' in that it only redraws what needs to
|
|
|
7848 be updated, as opposed to unconditionally clearing and redrawing
|
|
|
7849 the frame.
|
|
|
7850 FRAME defaults to the selected frame if omitted.
|
|
|
7851 Normally, redisplay is preempted as normal if input arrives. However,
|
|
|
7852 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for
|
|
|
7853 input and is guaranteed to proceed to completion.
|
|
20
|
7854 */
|
|
|
7855 (frame, no_preempt))
|
|
0
|
7856 {
|
|
|
7857 struct frame *f = decode_frame (frame);
|
|
|
7858 int count = specpdl_depth ();
|
|
|
7859
|
|
|
7860 if (!NILP (no_preempt))
|
|
|
7861 {
|
|
|
7862 record_unwind_protect (restore_disable_preemption_value,
|
|
|
7863 make_int (disable_preemption));
|
|
|
7864 disable_preemption++;
|
|
|
7865 }
|
|
|
7866
|
|
|
7867 redisplay_frame (f, 1);
|
|
|
7868
|
|
|
7869 return unbind_to (count, Qnil);
|
|
|
7870 }
|
|
|
7871
|
|
20
|
7872 DEFUN ("redraw-device", Fredraw_device, 0, 2, 0, /*
|
|
0
|
7873 Clear device DEVICE and output again what is supposed to appear on it.
|
|
|
7874 DEVICE defaults to the selected device if omitted.
|
|
|
7875 Normally, redisplay is preempted as normal if input arrives. However,
|
|
|
7876 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for
|
|
|
7877 input and is guaranteed to proceed to completion.
|
|
20
|
7878 */
|
|
70
|
7879 (device, no_preempt))
|
|
0
|
7880 {
|
|
|
7881 struct device *d = decode_device (device);
|
|
|
7882 Lisp_Object frmcons;
|
|
|
7883 int count = specpdl_depth ();
|
|
|
7884
|
|
|
7885 if (!NILP (no_preempt))
|
|
|
7886 {
|
|
|
7887 record_unwind_protect (restore_disable_preemption_value,
|
|
|
7888 make_int (disable_preemption));
|
|
|
7889 disable_preemption++;
|
|
|
7890 }
|
|
|
7891
|
|
|
7892 DEVICE_FRAME_LOOP (frmcons, d)
|
|
|
7893 {
|
|
|
7894 XFRAME (XCAR (frmcons))->clear = 1;
|
|
|
7895 }
|
|
|
7896 redisplay_device (d);
|
|
|
7897
|
|
|
7898 return unbind_to (count, Qnil);
|
|
|
7899 }
|
|
|
7900
|
|
20
|
7901 DEFUN ("redisplay-device", Fredisplay_device, 0, 2, 0, /*
|
|
0
|
7902 Ensure that DEVICE's contents are correctly displayed.
|
|
|
7903 This differs from `redraw-device' in that it only redraws what needs to
|
|
|
7904 be updated, as opposed to unconditionally clearing and redrawing
|
|
|
7905 the device.
|
|
|
7906 DEVICE defaults to the selected device if omitted.
|
|
|
7907 Normally, redisplay is preempted as normal if input arrives. However,
|
|
|
7908 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for
|
|
|
7909 input and is guaranteed to proceed to completion.
|
|
20
|
7910 */
|
|
|
7911 (device, no_preempt))
|
|
0
|
7912 {
|
|
|
7913 struct device *d = decode_device (device);
|
|
|
7914 int count = specpdl_depth ();
|
|
|
7915
|
|
|
7916 if (!NILP (no_preempt))
|
|
|
7917 {
|
|
|
7918 record_unwind_protect (restore_disable_preemption_value,
|
|
|
7919 make_int (disable_preemption));
|
|
|
7920 disable_preemption++;
|
|
|
7921 }
|
|
|
7922
|
|
|
7923 redisplay_device (d);
|
|
|
7924
|
|
|
7925 return unbind_to (count, Qnil);
|
|
|
7926 }
|
|
|
7927
|
|
|
7928 /* Big lie. Big lie. This will force all modelines to be updated
|
|
|
7929 regardless if the all flag is set or not. It remains in existence
|
|
|
7930 solely for backwards compatibility. */
|
|
20
|
7931 DEFUN ("redraw-modeline", Fredraw_modeline, 0, 1, 0, /*
|
|
0
|
7932 Force the modeline of the current buffer to be redisplayed.
|
|
|
7933 With optional non-nil ALL, force redisplay of all modelines.
|
|
20
|
7934 */
|
|
|
7935 (all))
|
|
0
|
7936 {
|
|
|
7937 MARK_MODELINE_CHANGED;
|
|
|
7938 return Qnil;
|
|
|
7939 }
|
|
|
7940
|
|
20
|
7941 DEFUN ("force-cursor-redisplay", Fforce_cursor_redisplay, 0, 1, 0, /*
|
|
0
|
7942 Force an immediate update of the cursor on FRAME.
|
|
|
7943 FRAME defaults to the selected frame if omitted.
|
|
20
|
7944 */
|
|
70
|
7945 (frame))
|
|
0
|
7946 {
|
|
|
7947 redisplay_redraw_cursor (decode_frame (frame), 1);
|
|
|
7948 return Qnil;
|
|
|
7949 }
|
|
|
7950
|
|
|
7951
|
|
|
7952 /***************************************************************************/
|
|
|
7953 /* */
|
|
|
7954 /* Lisp-variable change triggers */
|
|
|
7955 /* */
|
|
|
7956 /***************************************************************************/
|
|
|
7957
|
|
|
7958 static void
|
|
|
7959 margin_width_changed_in_frame (Lisp_Object specifier, struct frame *f,
|
|
|
7960 Lisp_Object oldval)
|
|
|
7961 {
|
|
|
7962 /* Nothing to be done? */
|
|
|
7963 }
|
|
|
7964
|
|
|
7965 int
|
|
|
7966 redisplay_variable_changed (Lisp_Object sym, Lisp_Object *val,
|
|
|
7967 Lisp_Object in_object, int flags)
|
|
|
7968 {
|
|
|
7969 /* #### clip_changed should really be renamed something like
|
|
|
7970 global_redisplay_change. */
|
|
|
7971 MARK_CLIP_CHANGED;
|
|
|
7972 return 0;
|
|
|
7973 }
|
|
|
7974
|
|
|
7975 void
|
|
|
7976 redisplay_glyph_changed (Lisp_Object glyph, Lisp_Object property,
|
|
|
7977 Lisp_Object locale)
|
|
|
7978 {
|
|
|
7979 MARK_CLIP_CHANGED;
|
|
|
7980 }
|
|
|
7981
|
|
|
7982 static void
|
|
|
7983 text_cursor_visible_p_changed (Lisp_Object specifier, struct window *w,
|
|
|
7984 Lisp_Object oldval)
|
|
|
7985 {
|
|
|
7986 if (XFRAME (w->frame)->init_finished)
|
|
|
7987 Fforce_cursor_redisplay (w->frame);
|
|
|
7988 }
|
|
|
7989
|
|
|
7990 #ifdef MEMORY_USAGE_STATS
|
|
|
7991
|
|
|
7992
|
|
|
7993 /***************************************************************************/
|
|
|
7994 /* */
|
|
|
7995 /* memory usage computation */
|
|
|
7996 /* */
|
|
|
7997 /***************************************************************************/
|
|
|
7998
|
|
|
7999 static int
|
|
|
8000 compute_rune_dynarr_usage (rune_dynarr *dyn, struct overhead_stats *ovstats)
|
|
|
8001 {
|
|
|
8002 int total = 0;
|
|
|
8003
|
|
|
8004 if (dyn)
|
|
|
8005 total += Dynarr_memory_usage (dyn, ovstats);
|
|
|
8006
|
|
|
8007 return total;
|
|
|
8008 }
|
|
|
8009
|
|
|
8010 static int
|
|
|
8011 compute_display_block_dynarr_usage (display_block_dynarr *dyn,
|
|
|
8012 struct overhead_stats *ovstats)
|
|
|
8013 {
|
|
|
8014 int total = 0;
|
|
|
8015
|
|
|
8016 if (dyn)
|
|
|
8017 {
|
|
|
8018 int i;
|
|
|
8019
|
|
|
8020 total += Dynarr_memory_usage (dyn, ovstats);
|
|
|
8021 for (i = 0; i < Dynarr_largest (dyn); i++)
|
|
|
8022 total += compute_rune_dynarr_usage (Dynarr_at (dyn, i).runes, ovstats);
|
|
|
8023 }
|
|
|
8024
|
|
|
8025 return total;
|
|
|
8026 }
|
|
|
8027
|
|
|
8028 static int
|
|
|
8029 compute_glyph_block_dynarr_usage (glyph_block_dynarr *dyn,
|
|
|
8030 struct overhead_stats *ovstats)
|
|
|
8031 {
|
|
|
8032 int total = 0;
|
|
|
8033
|
|
|
8034 if (dyn)
|
|
|
8035 total += Dynarr_memory_usage (dyn, ovstats);
|
|
|
8036
|
|
|
8037 return total;
|
|
|
8038 }
|
|
|
8039
|
|
|
8040 int
|
|
|
8041 compute_display_line_dynarr_usage (display_line_dynarr *dyn,
|
|
|
8042 struct overhead_stats *ovstats)
|
|
|
8043 {
|
|
|
8044 int total = 0;
|
|
|
8045
|
|
|
8046 if (dyn)
|
|
|
8047 {
|
|
|
8048 int i;
|
|
|
8049
|
|
|
8050 total += Dynarr_memory_usage (dyn, ovstats);
|
|
|
8051 for (i = 0; i < Dynarr_largest (dyn); i++)
|
|
|
8052 {
|
|
|
8053 total +=
|
|
|
8054 compute_display_block_dynarr_usage (Dynarr_at (dyn, i).
|
|
|
8055 display_blocks, ovstats);
|
|
|
8056 total +=
|
|
|
8057 compute_glyph_block_dynarr_usage (Dynarr_at (dyn, i).
|
|
|
8058 left_glyphs, ovstats);
|
|
|
8059 total +=
|
|
|
8060 compute_glyph_block_dynarr_usage (Dynarr_at (dyn, i).
|
|
|
8061 right_glyphs, ovstats);
|
|
|
8062 }
|
|
|
8063 }
|
|
|
8064
|
|
|
8065 return total;
|
|
|
8066 }
|
|
|
8067
|
|
|
8068 int
|
|
|
8069 compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn,
|
|
|
8070 struct overhead_stats *ovstats)
|
|
|
8071 {
|
|
|
8072 int total = 0;
|
|
|
8073
|
|
|
8074 if (dyn)
|
|
|
8075 total += Dynarr_memory_usage (dyn, ovstats);
|
|
|
8076
|
|
|
8077 return total;
|
|
|
8078 }
|
|
|
8079
|
|
|
8080 #endif /* MEMORY_USAGE_STATS */
|
|
|
8081
|
|
|
8082
|
|
|
8083 /***************************************************************************/
|
|
|
8084 /* */
|
|
|
8085 /* initialization */
|
|
|
8086 /* */
|
|
|
8087 /***************************************************************************/
|
|
|
8088
|
|
|
8089 void
|
|
|
8090 init_redisplay (void)
|
|
|
8091 {
|
|
|
8092 disable_preemption = 0;
|
|
|
8093 preemption_count = 0;
|
|
|
8094 max_preempts = INIT_MAX_PREEMPTS;
|
|
|
8095
|
|
|
8096 if (!initialized)
|
|
|
8097 {
|
|
|
8098 cmotion_display_lines = Dynarr_new (struct display_line);
|
|
|
8099 mode_spec_bufbyte_string = Dynarr_new (Bufbyte);
|
|
|
8100 formatted_string_emchar_dynarr = Dynarr_new (Emchar);
|
|
|
8101 formatted_string_extent_dynarr = Dynarr_new (struct extent *);
|
|
|
8102 formatted_string_extent_start_dynarr = Dynarr_new (Bytecount);
|
|
|
8103 formatted_string_extent_end_dynarr = Dynarr_new (Bytecount);
|
|
|
8104 internal_cache = Dynarr_new (struct line_start_cache);
|
|
|
8105 memset (&formatted_string_display_line, 0, sizeof (struct display_line));
|
|
|
8106 }
|
|
|
8107
|
|
|
8108 /* window system is nil when in -batch mode */
|
|
|
8109 if (!initialized || noninteractive)
|
|
|
8110 return;
|
|
|
8111
|
|
|
8112 /* If the user wants to use a window system, we shouldn't bother
|
|
|
8113 initializing the terminal. This is especially important when the
|
|
|
8114 terminal is so dumb that emacs gives up before and doesn't bother
|
|
|
8115 using the window system.
|
|
|
8116
|
|
|
8117 If the DISPLAY environment variable is set, try to use X, and die
|
|
|
8118 with an error message if that doesn't work. */
|
|
|
8119
|
|
|
8120 #ifdef HAVE_X_WINDOWS
|
|
|
8121 if (!strcmp (display_use, "x"))
|
|
|
8122 {
|
|
|
8123 /* Some stuff checks this way early. */
|
|
|
8124 Vwindow_system = Qx;
|
|
|
8125 Vinitial_window_system = Qx;
|
|
|
8126 return;
|
|
|
8127 }
|
|
|
8128 #endif
|
|
|
8129
|
|
|
8130 /* If no window system has been specified, try to use the terminal. */
|
|
|
8131 if (!isatty (0))
|
|
|
8132 {
|
|
|
8133 stderr_out ("XEmacs: standard input is not a tty\n");
|
|
|
8134 exit (1);
|
|
|
8135 }
|
|
|
8136
|
|
|
8137 /* Look at the TERM variable */
|
|
|
8138 if (!getenv ("TERM"))
|
|
|
8139 {
|
|
|
8140 stderr_out ("Please set the environment variable TERM; see tset(1).\n");
|
|
|
8141 exit (1);
|
|
|
8142 }
|
|
|
8143
|
|
|
8144 Vinitial_window_system = Qtty;
|
|
|
8145 }
|
|
|
8146
|
|
|
8147 void
|
|
|
8148 syms_of_redisplay (void)
|
|
|
8149 {
|
|
|
8150 defsymbol (&Qcursor_in_echo_area, "cursor-in-echo-area");
|
|
|
8151 #ifndef INHIBIT_REDISPLAY_HOOKS
|
|
|
8152 defsymbol (&Qpre_redisplay_hook, "pre-redisplay-hook");
|
|
|
8153 defsymbol (&Qpost_redisplay_hook, "post-redisplay-hook");
|
|
|
8154 #endif
|
|
|
8155 defsymbol (&Qdisplay_warning_buffer, "display-warning-buffer");
|
|
|
8156 defsymbol (&Qbar_cursor, "bar-cursor");
|
|
|
8157 defsymbol (&Qwindow_scroll_functions, "window-scroll-functions");
|
|
|
8158 defsymbol (&Qredisplay_end_trigger_functions,
|
|
|
8159 "redisplay-end-trigger-functions");
|
|
|
8160
|
|
20
|
8161 DEFSUBR (Fredisplay_echo_area);
|
|
|
8162 DEFSUBR (Fredraw_frame);
|
|
|
8163 DEFSUBR (Fredisplay_frame);
|
|
|
8164 DEFSUBR (Fredraw_device);
|
|
|
8165 DEFSUBR (Fredisplay_device);
|
|
|
8166 DEFSUBR (Fredraw_modeline);
|
|
|
8167 DEFSUBR (Fforce_cursor_redisplay);
|
|
0
|
8168 }
|
|
|
8169
|
|
|
8170 void
|
|
|
8171 vars_of_redisplay (void)
|
|
|
8172 {
|
|
|
8173 #if 0
|
|
|
8174 staticpro (&last_arrow_position);
|
|
|
8175 staticpro (&last_arrow_string);
|
|
|
8176 last_arrow_position = Qnil;
|
|
|
8177 last_arrow_string = Qnil;
|
|
|
8178 #endif
|
|
|
8179
|
|
|
8180 updating_line_start_cache = 0;
|
|
|
8181
|
|
|
8182 /* #### Probably temporary */
|
|
|
8183 DEFVAR_INT ("redisplay-cache-adjustment", &cache_adjustment /*
|
|
|
8184 (Temporary) Setting this will impact the performance of the internal
|
|
|
8185 line start cache.
|
|
|
8186 */ );
|
|
|
8187 cache_adjustment = 2;
|
|
|
8188
|
|
|
8189 DEFVAR_INT_MAGIC ("pixel-vertical-clip-threshold", &vertical_clip /*
|
|
|
8190 Minimum pixel height for clipped bottom display line.
|
|
|
8191 A clipped line shorter than this won't be displayed.
|
|
|
8192 */ ,
|
|
|
8193 redisplay_variable_changed);
|
|
|
8194 vertical_clip = 5;
|
|
|
8195
|
|
|
8196 DEFVAR_INT_MAGIC ("pixel-horizontal-clip-threshold", &horizontal_clip /*
|
|
|
8197 Minimum visible area for clipped glyphs at right boundary.
|
|
|
8198 Clipped glyphs shorter than this won't be displayed.
|
|
|
8199 Only pixmap glyph instances are currently allowed to be clipped.
|
|
|
8200 */ ,
|
|
|
8201 redisplay_variable_changed);
|
|
|
8202 horizontal_clip = 5;
|
|
|
8203
|
|
|
8204 DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string /*
|
|
|
8205 String displayed by modeline-format's \"%m\" specification.
|
|
|
8206 */ );
|
|
|
8207 Vglobal_mode_string = Qnil;
|
|
|
8208
|
|
|
8209 DEFVAR_LISP_MAGIC ("overlay-arrow-position", &Voverlay_arrow_position /*
|
|
|
8210 Marker for where to display an arrow on top of the buffer text.
|
|
|
8211 This must be the beginning of a line in order to work.
|
|
|
8212 See also `overlay-arrow-string'.
|
|
|
8213 */ , redisplay_variable_changed);
|
|
|
8214 Voverlay_arrow_position = Qnil;
|
|
|
8215
|
|
|
8216 DEFVAR_LISP_MAGIC ("overlay-arrow-string", &Voverlay_arrow_string /*
|
|
|
8217 String to display as an arrow. See also `overlay-arrow-position'.
|
|
|
8218 */ ,
|
|
|
8219 redisplay_variable_changed);
|
|
|
8220 Voverlay_arrow_string = Qnil;
|
|
|
8221
|
|
|
8222 DEFVAR_INT ("scroll-step", &scroll_step /*
|
|
|
8223 *The number of lines to try scrolling a window by when point moves out.
|
|
|
8224 If that fails to bring point back on frame, point is centered instead.
|
|
|
8225 If this is zero, point is always centered after it moves off screen.
|
|
|
8226 */ );
|
|
|
8227
|
|
|
8228 DEFVAR_BOOL_MAGIC ("truncate-partial-width-windows",
|
|
|
8229 &truncate_partial_width_windows /*
|
|
|
8230 *Non-nil means truncate lines in all windows less than full frame wide.
|
|
|
8231 */ ,
|
|
|
8232 redisplay_variable_changed);
|
|
|
8233 truncate_partial_width_windows = 1;
|
|
|
8234
|
|
|
8235 DEFVAR_BOOL ("visible-bell", &visible_bell /*
|
|
|
8236 *Non-nil means try to flash the frame to represent a bell.
|
|
|
8237 */ );
|
|
|
8238 visible_bell = 0;
|
|
|
8239
|
|
|
8240 DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter /*
|
|
|
8241 *Non-nil means no need to redraw entire frame after suspending.
|
|
|
8242 A non-nil value is useful if the terminal can automatically preserve
|
|
|
8243 Emacs's frame display when you reenter Emacs.
|
|
|
8244 It is up to you to set this variable if your terminal can do that.
|
|
|
8245 */ );
|
|
|
8246 no_redraw_on_reenter = 0;
|
|
|
8247
|
|
70
|
8248 /* #### This should be removed in 19.14 */
|
|
0
|
8249 DEFVAR_LISP ("window-system", &Vwindow_system /*
|
|
|
8250 A symbol naming the window-system under which Emacs is running,
|
|
|
8251 such as `x', or nil if emacs is running on an ordinary terminal.
|
|
70
|
8252 This variable is OBSOLETE and will be removed in a future version.
|
|
0
|
8253 */ );
|
|
|
8254 Vwindow_system = Qnil;
|
|
|
8255
|
|
|
8256 /* #### Temporary shit until window-system is eliminated. */
|
|
|
8257 DEFVAR_LISP ("initial-window-system", &Vinitial_window_system /*
|
|
|
8258 DON'T TOUCH
|
|
|
8259 */ );
|
|
|
8260 Vinitial_window_system = Qnil;
|
|
|
8261
|
|
|
8262 DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area /*
|
|
|
8263 Non-nil means put cursor in minibuffer, at end of any message there.
|
|
|
8264 */ );
|
|
|
8265 cursor_in_echo_area = 0;
|
|
|
8266
|
|
|
8267 /* #### Shouldn't this be generalized as follows:
|
|
|
8268
|
|
|
8269 if nil, use block cursor.
|
|
|
8270 if a number, use a bar cursor of that width.
|
|
|
8271 Otherwise, use a 1-pixel bar cursor.
|
|
|
8272
|
|
|
8273 #### Or better yet, this variable should be trashed entirely
|
|
|
8274 (use a Lisp-magic variable to maintain compatibility)
|
|
|
8275 and a specifier `cursor-shape' added, which allows a block
|
|
|
8276 cursor, a bar cursor, a flashing block or bar cursor,
|
|
|
8277 maybe a caret cursor, etc. */
|
|
|
8278
|
|
|
8279 DEFVAR_LISP ("bar-cursor", &Vbar_cursor /*
|
|
|
8280 Use vertical bar cursor if non-nil. If t width is 1 pixel, otherwise 2.
|
|
|
8281 */ );
|
|
|
8282 Vbar_cursor = Qnil;
|
|
|
8283
|
|
|
8284 #ifndef INHIBIT_REDISPLAY_HOOKS
|
|
|
8285 xxDEFVAR_LISP ("pre-redisplay-hook", &Vpre_redisplay_hook /*
|
|
|
8286 Function or functions to run before every redisplay.
|
|
|
8287 Functions on this hook must be careful to avoid signalling errors!
|
|
|
8288 */ );
|
|
|
8289 Vpre_redisplay_hook = Qnil;
|
|
|
8290
|
|
|
8291 xxDEFVAR_LISP ("post-redisplay-hook", &Vpost_redisplay_hook /*
|
|
|
8292 Function or functions to run after every redisplay.
|
|
|
8293 Functions on this hook must be careful to avoid signalling errors!
|
|
|
8294 */ );
|
|
|
8295 Vpost_redisplay_hook = Qnil;
|
|
|
8296 #endif
|
|
|
8297
|
|
|
8298 DEFVAR_INT ("display-warning-tick", &display_warning_tick /*
|
|
|
8299 Bump this to tell the C code to call `display-warning-buffer'
|
|
|
8300 at next redisplay. You should not normally change this; the function
|
|
|
8301 `display-warning' automatically does this at appropriate times.
|
|
|
8302 */ );
|
|
|
8303 display_warning_tick = 0;
|
|
|
8304
|
|
|
8305 DEFVAR_BOOL ("inhibit-warning-display", &inhibit_warning_display /*
|
|
|
8306 Non-nil means inhibit display of warning messages.
|
|
|
8307 You should *bind* this, not set it. Any pending warning messages
|
|
|
8308 will be displayed when the binding no longer applies.
|
|
|
8309 */ );
|
|
|
8310 /* reset to 0 by startup.el after the splash screen has displayed.
|
|
|
8311 This way, the warnings don't obliterate the splash screen. */
|
|
|
8312 inhibit_warning_display = 1;
|
|
|
8313
|
|
|
8314 DEFVAR_LISP ("window-size-change-functions",
|
|
|
8315 &Vwindow_size_change_functions /*
|
|
|
8316 Not currently implemented.
|
|
|
8317 Functions called before redisplay, if window sizes have changed.
|
|
|
8318 The value should be a list of functions that take one argument.
|
|
|
8319 Just before redisplay, for each frame, if any of its windows have changed
|
|
|
8320 size since the last redisplay, or have been split or deleted,
|
|
|
8321 all the functions in the list are called, with the frame as argument.
|
|
|
8322 */ );
|
|
|
8323 Vwindow_size_change_functions = Qnil;
|
|
|
8324
|
|
|
8325 DEFVAR_LISP ("window-scroll-functions", &Vwindow_scroll_functions /*
|
|
|
8326 Not currently implemented.
|
|
|
8327 Functions to call before redisplaying a window with scrolling.
|
|
|
8328 Each function is called with two arguments, the window
|
|
|
8329 and its new display-start position. Note that the value of `window-end'
|
|
|
8330 is not valid when these functions are called.
|
|
|
8331 */ );
|
|
|
8332 Vwindow_scroll_functions = Qnil;
|
|
|
8333
|
|
|
8334 DEFVAR_LISP ("redisplay-end-trigger-functions",
|
|
|
8335 &Vredisplay_end_trigger_functions /*
|
|
|
8336 See `set-window-redisplay-end-trigger'.
|
|
|
8337 */ );
|
|
|
8338 Vredisplay_end_trigger_functions = Qnil;
|
|
72
|
8339
|
|
|
8340 DEFVAR_BOOL ("column-number-start-at-one", &column_number_start_at_one /*
|
|
142
|
8341 *Non-nil means column display number starts at 1.
|
|
72
|
8342 */ );
|
|
|
8343 column_number_start_at_one = 1;
|
|
0
|
8344 }
|
|
|
8345
|
|
|
8346 void
|
|
|
8347 specifier_vars_of_redisplay (void)
|
|
|
8348 {
|
|
|
8349 DEFVAR_SPECIFIER ("left-margin-width", &Vleft_margin_width /*
|
|
|
8350 *Width of left margin.
|
|
|
8351 This is a specifier; use `set-specifier' to change it.
|
|
|
8352 */ );
|
|
|
8353 Vleft_margin_width = Fmake_specifier (Qnatnum);
|
|
|
8354 set_specifier_fallback
|
|
|
8355 (Vleft_margin_width,
|
|
|
8356 list1 (Fcons (Qnil, Qzero)));
|
|
|
8357 set_specifier_caching (Vleft_margin_width,
|
|
|
8358 slot_offset (struct window, left_margin_width),
|
|
|
8359 some_window_value_changed,
|
|
|
8360 slot_offset (struct frame, left_margin_width),
|
|
|
8361 margin_width_changed_in_frame);
|
|
|
8362
|
|
|
8363 DEFVAR_SPECIFIER ("right-margin-width", &Vright_margin_width /*
|
|
|
8364 *Width of right margin.
|
|
|
8365 This is a specifier; use `set-specifier' to change it.
|
|
|
8366 */ );
|
|
|
8367 Vright_margin_width = Fmake_specifier (Qnatnum);
|
|
|
8368 set_specifier_fallback
|
|
|
8369 (Vright_margin_width,
|
|
|
8370 list1 (Fcons (Qnil, Qzero)));
|
|
|
8371 set_specifier_caching (Vright_margin_width,
|
|
|
8372 slot_offset (struct window, right_margin_width),
|
|
|
8373 some_window_value_changed,
|
|
|
8374 slot_offset (struct frame, right_margin_width),
|
|
|
8375 margin_width_changed_in_frame);
|
|
|
8376
|
|
|
8377 DEFVAR_SPECIFIER ("minimum-line-ascent", &Vminimum_line_ascent /*
|
|
|
8378 *Minimum ascent height of lines.
|
|
|
8379 This is a specifier; use `set-specifier' to change it.
|
|
|
8380 */ );
|
|
|
8381 Vminimum_line_ascent = Fmake_specifier (Qnatnum);
|
|
|
8382 set_specifier_fallback (Vminimum_line_ascent,
|
|
|
8383 list1 (Fcons (Qnil, Qzero)));
|
|
|
8384 set_specifier_caching (Vminimum_line_ascent,
|
|
|
8385 slot_offset (struct window,
|
|
|
8386 minimum_line_ascent),
|
|
|
8387 some_window_value_changed,
|
|
|
8388 0, 0);
|
|
|
8389
|
|
|
8390 DEFVAR_SPECIFIER ("minimum-line-descent", &Vminimum_line_descent /*
|
|
|
8391 *Minimum descent height of lines.
|
|
|
8392 This is a specifier; use `set-specifier' to change it.
|
|
|
8393 */ );
|
|
|
8394 Vminimum_line_descent = Fmake_specifier (Qnatnum);
|
|
|
8395 set_specifier_fallback (Vminimum_line_descent,
|
|
|
8396 list1 (Fcons (Qnil, Qzero)));
|
|
|
8397 set_specifier_caching (Vminimum_line_descent,
|
|
|
8398 slot_offset (struct window,
|
|
|
8399 minimum_line_descent),
|
|
|
8400 some_window_value_changed,
|
|
|
8401 0, 0);
|
|
|
8402
|
|
|
8403 DEFVAR_SPECIFIER ("use-left-overflow", &Vuse_left_overflow /*
|
|
|
8404 *Non-nil means use the left outside margin as extra whitespace when
|
|
|
8405 displaying 'whitespace or 'inside-margin glyphs.
|
|
|
8406 This is a specifier; use `set-specifier' to change it.
|
|
|
8407 */ );
|
|
|
8408 Vuse_left_overflow = Fmake_specifier (Qboolean);
|
|
|
8409 set_specifier_fallback (Vuse_left_overflow,
|
|
|
8410 list1 (Fcons (Qnil, Qnil)));
|
|
|
8411 set_specifier_caching (Vuse_left_overflow,
|
|
|
8412 slot_offset (struct window,
|
|
|
8413 use_left_overflow),
|
|
|
8414 some_window_value_changed,
|
|
|
8415 0, 0);
|
|
|
8416
|
|
|
8417 DEFVAR_SPECIFIER ("use-right-overflow", &Vuse_right_overflow /*
|
|
|
8418 *Non-nil means use the right outside margin as extra whitespace when
|
|
|
8419 displaying 'whitespace or 'inside-margin glyphs.
|
|
|
8420 This is a specifier; use `set-specifier' to change it.
|
|
|
8421 */ );
|
|
|
8422 Vuse_right_overflow = Fmake_specifier (Qboolean);
|
|
|
8423 set_specifier_fallback (Vuse_right_overflow,
|
|
|
8424 list1 (Fcons (Qnil, Qnil)));
|
|
|
8425 set_specifier_caching (Vuse_right_overflow,
|
|
|
8426 slot_offset (struct window,
|
|
|
8427 use_right_overflow),
|
|
|
8428 some_window_value_changed,
|
|
|
8429 0, 0);
|
|
|
8430
|
|
|
8431 DEFVAR_SPECIFIER ("text-cursor-visible-p", &Vtext_cursor_visible_p /*
|
|
|
8432 *Non-nil means the text cursor is visible (this is usually the case).
|
|
|
8433 This is a specifier; use `set-specifier' to change it.
|
|
|
8434 */ );
|
|
|
8435 Vtext_cursor_visible_p = Fmake_specifier (Qboolean);
|
|
|
8436 set_specifier_fallback (Vtext_cursor_visible_p,
|
|
|
8437 list1 (Fcons (Qnil, Qt)));
|
|
|
8438 set_specifier_caching (Vtext_cursor_visible_p,
|
|
|
8439 slot_offset (struct window,
|
|
|
8440 text_cursor_visible_p),
|
|
|
8441 text_cursor_visible_p_changed,
|
|
|
8442 0, 0);
|
|
72
|
8443
|
|
0
|
8444 }
|
