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