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