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