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428
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1 /* Redisplay data structures.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1996 Chuck Thompson.
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4 Copyright (C) 1995, 1996, 2002 Ben Wing.
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428
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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440
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25 #ifndef INCLUDED_redisplay_h_
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26 #define INCLUDED_redisplay_h_
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428
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27
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28 /* Redisplay DASSERT types */
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29 #define DB_DISP_POS 1
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30 #define DB_DISP_TEXT_LAYOUT 2
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31 #define DB_DISP_REDISPLAY 4
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32
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33 /* These are the possible return values from pixel_to_glyph_translation. */
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34 #define OVER_MODELINE 0
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35 #define OVER_TEXT 1
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36 #define OVER_OUTSIDE 2
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37 #define OVER_NOTHING 3
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38 #define OVER_BORDER 4
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39 #define OVER_TOOLBAR 5
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40 #define OVER_V_DIVIDER 6
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41
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42 #define NO_BLOCK -1
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43
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44 /* Imagine that the text in the buffer is displayed on a piece of paper
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45 the width of the frame and very very tall. The line start cache is
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46 an array of struct line_start_cache's, describing the start and
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47 end buffer positions for a contiguous set of lines on that piece
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48 of paper. */
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49
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50 typedef struct line_start_cache line_start_cache;
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51 struct line_start_cache
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52 {
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53 Charbpos start, end;
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428
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54 int height;
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55 };
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56
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57 typedef struct
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58 {
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59 Dynarr_declare (line_start_cache);
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60 } line_start_cache_dynarr;
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61
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62 /* The possible types of runes.
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63
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64 #### The Lisp_Glyph type is broken. There should instead be a pixmap
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65 type. Currently the device-specific output routines have to worry
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66 about whether the glyph is textual or not, etc. For Mule this is
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67 a big problem because you might need multiple fonts to display the
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68 text. It also eliminates optimizations that could come from glumping
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69 the text of multiple text glyphs together -- this makes displaying
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70 binary files (with lots of control chars, etc.) very very slow. */
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71
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72 #define RUNE_BLANK 0
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73 #define RUNE_CHAR 1
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74 #define RUNE_DGLYPH 2
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75 #define RUNE_HLINE 3
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76 #define RUNE_VLINE 4
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77
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78 #define CURSOR_ON 0
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79 #define CURSOR_OFF 1
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80 #define NO_CURSOR 2
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81 #define NEXT_CURSOR 3
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82 #define IGNORE_CURSOR 4
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83
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84 #define DEFAULT_INDEX (face_index) 0
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85 #define MODELINE_INDEX (face_index) 1
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86
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87 /* A rune is a single display element, such as a printable character
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88 or pixmap. Any single character in a buffer has one or more runes
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89 (or zero, if the character is invisible) corresponding to it.
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90 (Printable characters typically have one rune associated with them,
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91 but control characters have two -- a ^ and a letter -- and other
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92 non-printing characters (those displayed in octal) have four. */
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93
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94 /* WARNING! In compare_runes (one of the most heavily used functions)
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95 two runes are compared. So please be careful with changes to this
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96 structure. See comments in compare_runes.
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97
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98 #### This should really be made smaller.
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99 */
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432
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100
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428
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101 typedef struct rune rune;
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102 struct rune
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103 {
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104 face_index findex; /* face rune is displayed with. The
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105 face_index is an index into a
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106 window-specific array of face cache
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107 elements. Each face cache element
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108 corresponds to one "merged face"
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109 (the result of merging all the
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110 faces that overlap the rune) and
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111 contains the instance values for
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112 each of the face properties in this
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113 particular window. */
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114
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115 Charxpos charpos; /* buffer position this rune is displaying;
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428
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116 for the modeline, the value here is a
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117 Charcount, but who's looking? */
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118 Charxpos endpos; /* if set this rune covers a range of pos;
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119 used in redisplay_move_cursor(). */
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428
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120 /* #### Chuck, what does it mean for a rune
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121 to cover a range of pos? I don't get
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122 this. */
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432
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123
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124
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428
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125 short xpos; /* horizontal starting position in pixels */
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126 short width; /* pixel width of rune */
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432
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127
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128
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428
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129 unsigned char cursor_type; /* is this rune covered by the cursor? */
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130 unsigned char type; /* type of rune object */
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131 /* We used to do bitfields here, but if I
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132 (JV) count correctly that doesn't matter
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133 for the size of the structure. All the bit
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134 fiddling _does_ slow down redisplay by
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135 about 10%. So don't do that */
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136
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137 union /* Information specific to the type of rune */
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138 {
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450
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139 /* #### Glyphs are rare. Is it really necessary to waste 8 bytes on every
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140 rune for that?! */
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141 /* DGLYPH */
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142 struct
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143 {
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144 Lisp_Object glyph;
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145 Lisp_Object extent; /* extent rune is attached to, if any.
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146 If this is a rune in the modeline
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147 then this might be nil. */
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148
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819
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149 int ascent; /* Ascent of this glyph, in pixels. */
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150 int descent; /* Descent of this glyph, in pixels. */
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151 int yoffset; /* Offset from line top to reach glyph top */
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428
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152 int xoffset; /* Number of pixels that need to be
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153 chopped off the left of the glyph.
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154 This has the effect of shifting the
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155 glyph to the left while still clipping
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156 at XPOS. */
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157 } dglyph;
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158
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159 /* CHAR */
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160 struct
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161 {
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162 Emchar ch; /* Character of this rune. */
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163 } chr;
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164
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165 /* HLINE */
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166 struct
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167 {
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168 short thickness; /* how thick to make hline */
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169 short yoffset; /* how far down from top of line to put top */
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170 } hline;
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171 } object; /* actual rune object */
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172 };
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173
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174 typedef struct
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175 {
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176 Dynarr_declare (rune);
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177 } rune_dynarr;
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178
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179 /* These must have distinct values. Note that the ordering actually
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180 represents priority levels. TEXT has the lowest priority level. */
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181 enum display_type
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182 {
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183 TEXT,
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184 LEFT_OUTSIDE_MARGIN,
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185 LEFT_INSIDE_MARGIN,
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186 RIGHT_INSIDE_MARGIN,
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187 RIGHT_OUTSIDE_MARGIN,
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188 OVERWRITE
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189 };
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190
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191 /* A display block represents a run of text on a single line.
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192 Apparently there is only one display block per line for each
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193 of the types listed in `enum display_type'.
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194
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195 A display block consists mostly of an array of runes, one per
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196 atomic display element (printable character, pixmap, etc.). */
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197
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198 /* #### Yuckity yuckity yuck yuck yuck yuck yuck!!
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199
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200 Chuck, I think you should redo this. It should not be the
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201 responsibility of the device-specific code to worry about
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202 the different faces. The generic stuff in redisplay-output.c
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203 should glump things up into sub-blocks, each of which
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204 corresponds to a single pixmap or a single run of text in
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205 the same font.
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206
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207 It might still make sense for the device-specific output routine
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208 to get passed an entire display line. That way, it can make
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209 calls to XDrawText() (which draws multiple runs of single-font
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210 data) instead of XDrawString(). The reason for this is to
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211 reduce the amount of X traffic, which will help things significantly
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212 on a slow line. */
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213
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214 typedef struct display_block display_block;
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215 struct display_block
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216 {
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217 enum display_type type; /* type of display block */
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218
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219 int start_pos; /* starting pixel position of block */
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220 int end_pos; /* ending pixel position of block */
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221
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222 rune_dynarr *runes; /* Dynamic array of runes */
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223 };
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224
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225 typedef struct
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226 {
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227 Dynarr_declare (display_block);
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228 } display_block_dynarr;
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229
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230 typedef struct layout_bounds_type
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231 {
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232 int left_out;
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233 int left_in;
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234 int left_white;
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235 int right_white;
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236 int right_in;
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237 int right_out;
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238 } layout_bounds;
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239
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240 typedef struct glyph_block glyph_block;
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241 struct glyph_block
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242 {
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243 Lisp_Object glyph;
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244 Lisp_Object extent;
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245 /* The rest are only used by margin routines. */
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246 face_index findex;
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247 int active;
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248 int width;
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249 };
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250
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251 typedef struct
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252 {
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253 Dynarr_declare (glyph_block);
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254 } glyph_block_dynarr;
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255
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256 /*************************************************************************/
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617
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257 /* display lines */
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428
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258 /*************************************************************************/
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259
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826
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260 /* Modeline commentary: IMO the modeline is handled very badly, we
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428
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261 special case virtually *everything* in the redisplay routines for
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262 the modeline. The fact that dl->charpos can be either a buffer
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428
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263 position or a char count highlights this. There is no abstraction at
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264 all that I can find and it means that the code is made very ugly as
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265 a result. Either we should treat the modeline *entirely* separately,
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266 or we should abstract to something that applies equally well to the
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267 modeline and to buffer text, the things are not enormously different
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268 after all and handling them identically at some level would
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269 eliminate some bugs that still exist (mainly to do with modeline
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270 handling). This problem doesn't help trying to implement gutters
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271 which are somewhere in between buffer text and modeline text.
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272
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273 Redisplay commentary: Everything in redisplay is tied very tightly
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274 to the things that are being displayed, and the context,
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275 e.g. buffers and windows. According to Chuck this is so that we can
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276 get speed, which seems fine to me, however this usage is extended
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442
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277 too far down the redisplay routines IMO. At some level there should
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428
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278 be functions that know how to display strings with extents and
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279 faces, regardless of buffer etc. After all the window system does
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280 not care. <andy@xemacs.org> */
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281
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282 typedef struct display_line display_line;
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283 struct display_line
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284 {
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285 short ypos; /* vertical position in pixels
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286 of the baseline for this line. */
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287 unsigned short ascent, descent; /* maximum values for this line.
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288 The ascent is the number of
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289 pixels above the baseline, and
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290 the descent is the number of
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291 pixels below the baseline.
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292 The descent includes the baseline
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293 pixel-row itself, I think. */
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294 unsigned short clip; /* amount of bottom of line to clip
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295 in pixels.*/
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296 unsigned short top_clip; /* amount of top of line to clip
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297 in pixels.*/
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298 Charxpos charpos; /* first buffer position on line */
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299 Charxpos end_charpos; /* last buffer position on line */
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300 Charcount offset; /* adjustment to charpos vals */
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428
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301 Charcount num_chars; /* # of chars on line
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302 including expansion of tabs
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303 and control chars */
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304 int cursor_elt; /* rune block of TEXT display
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305 block cursor is at or -1 */
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306 char used_prop_data; /* can't incrementally update if line
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307 used propagation data */
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308
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309 layout_bounds bounds; /* line boundary positions */
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310
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311 char modeline; /* t if this line is a modeline */
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312
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442
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313 char line_continuation; /* t if this line continues to
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314 next display line. */
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315
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428
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316 /* Dynamic array of display blocks */
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317 display_block_dynarr *display_blocks;
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318
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319 /* Dynamic arrays of left and right glyph blocks */
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320 glyph_block_dynarr *left_glyphs;
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321 glyph_block_dynarr *right_glyphs;
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322
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323 face_index left_margin_findex;
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324 face_index right_margin_findex;
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325 face_index default_findex;
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326 };
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327
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328 #define DISPLAY_LINE_HEIGHT(dl) \
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329 (dl->ascent + dl->descent - (dl->clip + dl->top_clip))
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330 #define DISPLAY_LINE_YPOS(dl) \
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331 (dl->ypos - (dl->ascent - dl->top_clip))
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332 #define DISPLAY_LINE_YEND(dl) \
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333 ((dl->ypos + dl->descent) - dl->clip)
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334
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335 typedef struct
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336 {
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337 Dynarr_declare (display_line);
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338 } display_line_dynarr;
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339
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340 /* The following two structures are used to represent an area to
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341 displayed and where to display it. Using these two structures all
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342 combinations of clipping and position can be accommodated. */
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343
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344 /* This represents an area to be displayed into. */
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345 typedef struct display_box display_box;
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346 struct display_box
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347 {
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348 int xpos; /* absolute horizontal position of area */
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349 int ypos; /* absolute vertical position of area */
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350 int width, height;
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351 };
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352
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353 /* This represents the area from a glyph to be displayed. */
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354 typedef struct display_glyph_area display_glyph_area;
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355 struct display_glyph_area
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356 {
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357 int xoffset; /* horizontal offset of the glyph, +ve means
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358 display the glyph with x offset by xoffset,
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359 -ve means display starting xoffset into the
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360 glyph. */
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361 int yoffset; /* vertical offset of the glyph, +ve means
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362 display the glyph with y offset by yoffset,
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363 -ve means display starting xoffset into the
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364 glyph. */
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365 int width, height; /* width and height of glyph to display. */
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366 };
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367
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368 /* It could be argued that the following two structs belong in
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369 extents.h, but they're only used by redisplay and it simplifies
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370 the header files to put them here. */
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371
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372 typedef struct
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373 {
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374 Dynarr_declare (EXTENT);
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375 } EXTENT_dynarr;
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376
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377 struct font_metric_info
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378 {
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379 int width;
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380 int height; /* always ascent + descent; for convenience */
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381 int ascent;
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382 int descent;
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383
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384 int proportional_p;
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385 };
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386
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387 /* NOTE NOTE NOTE: Currently the positions in an extent fragment
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826
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388 structure are Bytexpos's, not Charxpos's. This could change. */
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428
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389
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390 struct extent_fragment
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391 {
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392 Lisp_Object object; /* buffer or string */
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393 struct frame *frm;
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826
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394 Bytexpos pos, end;
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428
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395 EXTENT_dynarr *extents;
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396 glyph_block_dynarr *begin_glyphs, *end_glyphs;
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397 unsigned int invisible:1;
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398 unsigned int invisible_ellipses:1;
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399 unsigned int previously_invisible:1;
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400 unsigned int invisible_ellipses_already_displayed:1;
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401 };
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402
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403 #define EDGE_TOP 1
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404 #define EDGE_LEFT 2
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405 #define EDGE_BOTTOM 4
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406 #define EDGE_RIGHT 8
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407 #define EDGE_ALL (EDGE_TOP | EDGE_LEFT | EDGE_BOTTOM | EDGE_RIGHT)
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408
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409
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410 /*************************************************************************/
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411 /* change flags */
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412 /*************************************************************************/
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413
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414 /* Quick flags to signal redisplay. redisplay() sets them all to 0
|
|
|
415 when it finishes. If none of them are set when it starts, it
|
|
|
416 assumes that nothing needs to be done. Functions that make a change
|
|
|
417 that is (potentially) visible on the screen should set the
|
|
|
418 appropriate flag.
|
|
|
419
|
|
|
420 If any of these flags are set, redisplay will look more carefully
|
|
|
421 to see if anything has really changed. */
|
|
|
422
|
|
442
|
423 /* Nonzero if the contents of a buffer have changed since the last time
|
|
|
424 redisplay completed. */
|
|
428
|
425 extern int buffers_changed;
|
|
|
426 extern int buffers_changed_set;
|
|
|
427
|
|
|
428 /* Nonzero if head_clip or tail_clip of a buffer has changed
|
|
442
|
429 since last redisplay that finished. */
|
|
428
|
430 extern int clip_changed;
|
|
|
431 extern int clip_changed_set;
|
|
|
432
|
|
442
|
433 /* Nonzero if any extent has changed since the last time redisplay completed. */
|
|
428
|
434 extern int extents_changed;
|
|
|
435 extern int extents_changed_set;
|
|
|
436
|
|
442
|
437 /* Nonzero if any face has changed since the last time redisplay completed. */
|
|
428
|
438 extern int faces_changed;
|
|
|
439
|
|
442
|
440 /* Nonzero means one or more frames have been marked as garbaged. */
|
|
428
|
441 extern int frame_changed;
|
|
|
442
|
|
|
443 /* True if any of the builtin display glyphs (continuation,
|
|
|
444 hscroll, control-arrow, etc) is in need of updating
|
|
|
445 somewhere. */
|
|
|
446 extern int glyphs_changed;
|
|
|
447 extern int glyphs_changed_set;
|
|
|
448
|
|
|
449 /* True if any displayed subwindow is in need of updating
|
|
|
450 somewhere. */
|
|
|
451 extern int subwindows_changed;
|
|
|
452 extern int subwindows_changed_set;
|
|
|
453
|
|
|
454 /* True if any displayed subwindow is in need of updating
|
|
|
455 somewhere. */
|
|
|
456 extern int subwindows_state_changed;
|
|
|
457 extern int subwindows_state_changed_set;
|
|
|
458
|
|
|
459 /* True if an icon is in need of updating somewhere. */
|
|
|
460 extern int icon_changed;
|
|
|
461 extern int icon_changed_set;
|
|
|
462
|
|
|
463 /* True if a menubar is in need of updating somewhere. */
|
|
|
464 extern int menubar_changed;
|
|
|
465 extern int menubar_changed_set;
|
|
|
466
|
|
442
|
467 /* True iff we should redraw the modelines on the next redisplay. */
|
|
428
|
468 extern int modeline_changed;
|
|
|
469 extern int modeline_changed_set;
|
|
|
470
|
|
442
|
471 /* Nonzero if point has changed in some buffer since the last time
|
|
|
472 redisplay completed. */
|
|
428
|
473 extern int point_changed;
|
|
|
474 extern int point_changed_set;
|
|
|
475
|
|
442
|
476 /* Nonzero if some frame has changed its size. */
|
|
428
|
477 extern int size_changed;
|
|
|
478
|
|
442
|
479 /* Nonzero if some device has signaled that it wants to change size. */
|
|
428
|
480 extern int asynch_device_change_pending;
|
|
|
481
|
|
442
|
482 /* Nonzero if any toolbar has changed. */
|
|
428
|
483 extern int toolbar_changed;
|
|
|
484 extern int toolbar_changed_set;
|
|
|
485
|
|
442
|
486 /* Nonzero if any gutter has changed. */
|
|
428
|
487 extern int gutter_changed;
|
|
|
488 extern int gutter_changed_set;
|
|
|
489
|
|
442
|
490 /* Nonzero if any window has changed since the last time redisplay completed */
|
|
428
|
491 extern int windows_changed;
|
|
|
492
|
|
442
|
493 /* Nonzero if any frame's window structure has changed since the last
|
|
|
494 time redisplay completed. */
|
|
428
|
495 extern int windows_structure_changed;
|
|
|
496
|
|
|
497 /* These macros can be relatively expensive. Since they are often
|
|
|
498 called numerous times between each call to redisplay, we keep track
|
|
|
499 if each has already been called and don't bother doing most of the
|
|
|
500 work if it is currently set. */
|
|
|
501
|
|
|
502 #define MARK_TYPE_CHANGED(object) do { \
|
|
|
503 if (!object##_changed_set) { \
|
|
|
504 Lisp_Object MTC_devcons, MTC_concons; \
|
|
|
505 DEVICE_LOOP_NO_BREAK (MTC_devcons, MTC_concons) \
|
|
|
506 { \
|
|
|
507 Lisp_Object MTC_frmcons; \
|
|
|
508 struct device *MTC_d = XDEVICE (XCAR (MTC_devcons)); \
|
|
|
509 DEVICE_FRAME_LOOP (MTC_frmcons, MTC_d) \
|
|
|
510 { \
|
|
|
511 struct frame *MTC_f = XFRAME (XCAR (MTC_frmcons)); \
|
|
|
512 MTC_f->object##_changed = 1; \
|
|
|
513 MTC_f->modiff++; \
|
|
|
514 } \
|
|
|
515 MTC_d->object##_changed = 1; \
|
|
|
516 } \
|
|
|
517 object##_changed = 1; \
|
|
|
518 object##_changed_set = 1; } \
|
|
|
519 } while (0)
|
|
|
520
|
|
|
521 #define MARK_BUFFERS_CHANGED MARK_TYPE_CHANGED (buffers)
|
|
|
522 #define MARK_CLIP_CHANGED MARK_TYPE_CHANGED (clip)
|
|
|
523 #define MARK_EXTENTS_CHANGED MARK_TYPE_CHANGED (extents)
|
|
|
524 #define MARK_ICON_CHANGED MARK_TYPE_CHANGED (icon)
|
|
|
525 #define MARK_MENUBAR_CHANGED MARK_TYPE_CHANGED (menubar)
|
|
|
526 #define MARK_MODELINE_CHANGED MARK_TYPE_CHANGED (modeline)
|
|
|
527 #define MARK_POINT_CHANGED MARK_TYPE_CHANGED (point)
|
|
|
528 #define MARK_TOOLBAR_CHANGED MARK_TYPE_CHANGED (toolbar)
|
|
|
529 #define MARK_GUTTER_CHANGED MARK_TYPE_CHANGED (gutter)
|
|
|
530 #define MARK_GLYPHS_CHANGED MARK_TYPE_CHANGED (glyphs)
|
|
|
531 #define MARK_SUBWINDOWS_CHANGED MARK_TYPE_CHANGED (subwindows)
|
|
|
532 #define MARK_SUBWINDOWS_STATE_CHANGED MARK_TYPE_CHANGED (subwindows_state)
|
|
|
533
|
|
|
534
|
|
|
535 #define CLASS_RESET_CHANGED_FLAGS(p) do { \
|
|
|
536 (p)->buffers_changed = 0; \
|
|
|
537 (p)->clip_changed = 0; \
|
|
|
538 (p)->extents_changed = 0; \
|
|
|
539 (p)->faces_changed = 0; \
|
|
|
540 (p)->frame_changed = 0; \
|
|
|
541 (p)->icon_changed = 0; \
|
|
|
542 (p)->menubar_changed = 0; \
|
|
|
543 (p)->modeline_changed = 0; \
|
|
|
544 (p)->point_changed = 0; \
|
|
|
545 (p)->toolbar_changed = 0; \
|
|
|
546 (p)->gutter_changed = 0; \
|
|
|
547 (p)->glyphs_changed = 0; \
|
|
|
548 (p)->subwindows_changed = 0; \
|
|
|
549 (p)->subwindows_state_changed = 0; \
|
|
|
550 (p)->windows_changed = 0; \
|
|
|
551 (p)->windows_structure_changed = 0; \
|
|
|
552 } while (0)
|
|
|
553
|
|
|
554 #define GLOBAL_RESET_CHANGED_FLAGS do { \
|
|
|
555 buffers_changed = 0; \
|
|
|
556 clip_changed = 0; \
|
|
|
557 extents_changed = 0; \
|
|
|
558 frame_changed = 0; \
|
|
|
559 icon_changed = 0; \
|
|
|
560 menubar_changed = 0; \
|
|
|
561 modeline_changed = 0; \
|
|
|
562 point_changed = 0; \
|
|
|
563 toolbar_changed = 0; \
|
|
|
564 gutter_changed = 0; \
|
|
|
565 glyphs_changed = 0; \
|
|
|
566 subwindows_changed = 0; \
|
|
442
|
567 subwindows_state_changed = 0; \
|
|
428
|
568 windows_changed = 0; \
|
|
|
569 windows_structure_changed = 0; \
|
|
|
570 } while (0)
|
|
|
571
|
|
|
572 #define CLASS_REDISPLAY_FLAGS_CHANGEDP(p) \
|
|
|
573 ( (p)->buffers_changed || \
|
|
|
574 (p)->clip_changed || \
|
|
|
575 (p)->extents_changed || \
|
|
|
576 (p)->faces_changed || \
|
|
|
577 (p)->frame_changed || \
|
|
|
578 (p)->icon_changed || \
|
|
|
579 (p)->menubar_changed || \
|
|
|
580 (p)->modeline_changed || \
|
|
|
581 (p)->point_changed || \
|
|
|
582 (p)->toolbar_changed || \
|
|
|
583 (p)->gutter_changed || \
|
|
|
584 (p)->glyphs_changed || \
|
|
442
|
585 (p)->size_changed || \
|
|
428
|
586 (p)->subwindows_changed || \
|
|
|
587 (p)->subwindows_state_changed || \
|
|
|
588 (p)->windows_changed || \
|
|
|
589 (p)->windows_structure_changed )
|
|
|
590
|
|
|
591 #define GLOBAL_REDISPLAY_FLAGS_CHANGEDP \
|
|
|
592 ( buffers_changed || \
|
|
|
593 clip_changed || \
|
|
|
594 extents_changed || \
|
|
|
595 faces_changed || \
|
|
|
596 frame_changed || \
|
|
|
597 icon_changed || \
|
|
|
598 menubar_changed || \
|
|
|
599 modeline_changed || \
|
|
|
600 point_changed || \
|
|
|
601 toolbar_changed || \
|
|
|
602 gutter_changed || \
|
|
|
603 glyphs_changed || \
|
|
430
|
604 size_changed || \
|
|
428
|
605 subwindows_changed || \
|
|
|
606 subwindows_state_changed || \
|
|
|
607 windows_changed || \
|
|
|
608 windows_structure_changed )
|
|
|
609
|
|
|
610
|
|
|
611 /* Anytime a console, device or frame is added or deleted we need to reset
|
|
|
612 these flags. */
|
|
|
613 #define RESET_CHANGED_SET_FLAGS do { \
|
|
|
614 buffers_changed_set = 0; \
|
|
|
615 clip_changed_set = 0; \
|
|
|
616 extents_changed_set = 0; \
|
|
|
617 icon_changed_set = 0; \
|
|
|
618 menubar_changed_set = 0; \
|
|
|
619 modeline_changed_set = 0; \
|
|
|
620 point_changed_set = 0; \
|
|
|
621 toolbar_changed_set = 0; \
|
|
|
622 gutter_changed_set = 0; \
|
|
|
623 glyphs_changed_set = 0; \
|
|
|
624 subwindows_changed_set = 0; \
|
|
|
625 subwindows_state_changed_set = 0; \
|
|
|
626 } while (0)
|
|
|
627
|
|
|
628
|
|
|
629 /*************************************************************************/
|
|
|
630 /* redisplay global variables */
|
|
|
631 /*************************************************************************/
|
|
|
632
|
|
|
633 /* redisplay structure used by various utility routines. */
|
|
|
634 extern display_line_dynarr *cmotion_display_lines;
|
|
|
635
|
|
|
636 /* Nonzero means truncate lines in all windows less wide than the frame. */
|
|
|
637 extern int truncate_partial_width_windows;
|
|
|
638
|
|
|
639 /* Nonzero if we're in a display critical section. */
|
|
|
640 extern int in_display;
|
|
|
641
|
|
|
642 /* Nonzero means no need to redraw the entire frame on resuming
|
|
|
643 a suspended Emacs. This is useful on terminals with multiple pages,
|
|
|
644 where one page is used for Emacs and another for all else. */
|
|
|
645 extern int no_redraw_on_reenter;
|
|
|
646
|
|
442
|
647 /* Non-nil means flash the frame instead of ringing the bell. */
|
|
|
648 extern Lisp_Object Vvisible_bell;
|
|
428
|
649
|
|
|
650 /* Thickness of shadow border around 3D modelines. */
|
|
|
651 extern Lisp_Object Vmodeline_shadow_thickness;
|
|
|
652
|
|
|
653 /* Scroll if point lands on the bottom line and that line is partially
|
|
|
654 clipped. */
|
|
|
655 extern int scroll_on_clipped_lines;
|
|
|
656
|
|
|
657 extern Lisp_Object Vglobal_mode_string;
|
|
|
658
|
|
|
659 /* The following two variables are defined in emacs.c and are used
|
|
|
660 to convey information discovered on the command line way early
|
|
|
661 (before *anything* is initialized). */
|
|
|
662
|
|
|
663 /* If non-zero, a window-system was specified on the command line.
|
|
|
664 Defined in emacs.c. */
|
|
|
665 extern int display_arg;
|
|
|
666
|
|
|
667 /* Type of display specified. Defined in emacs.c. */
|
|
771
|
668 extern const Char_ASCII *display_use;
|
|
428
|
669
|
|
|
670 /* Nonzero means reading single-character input with prompt
|
|
|
671 so put cursor on minibuffer after the prompt. */
|
|
|
672
|
|
|
673 extern int cursor_in_echo_area;
|
|
|
674
|
|
|
675 extern Lisp_Object Qbar_cursor, Qcursor_in_echo_area, Vwindow_system;
|
|
|
676
|
|
442
|
677 extern Lisp_Object Qtop_bottom;
|
|
|
678
|
|
428
|
679
|
|
|
680 /*************************************************************************/
|
|
|
681 /* redisplay exported functions */
|
|
|
682 /*************************************************************************/
|
|
|
683 EXFUN (Fredraw_frame, 2);
|
|
|
684
|
|
|
685 int redisplay_text_width_string (struct window *w, int findex,
|
|
665
|
686 Intbyte *nonreloc, Lisp_Object reloc,
|
|
428
|
687 Bytecount offset, Bytecount len);
|
|
|
688 int redisplay_frame_text_width_string (struct frame *f,
|
|
|
689 Lisp_Object face,
|
|
665
|
690 Intbyte *nonreloc,
|
|
428
|
691 Lisp_Object reloc,
|
|
|
692 Bytecount offset, Bytecount len);
|
|
442
|
693 int redisplay_frame (struct frame *f, int preemption_check);
|
|
428
|
694 void redisplay (void);
|
|
|
695 struct display_block *get_display_block_from_line (struct display_line *dl,
|
|
|
696 enum display_type type);
|
|
|
697 layout_bounds calculate_display_line_boundaries (struct window *w,
|
|
|
698 int modeline);
|
|
665
|
699 Charbpos point_at_center (struct window *w, int type, Charbpos start,
|
|
826
|
700 Charbpos point);
|
|
|
701 int line_at_center (struct window *w, int type, Charbpos start,
|
|
|
702 Charbpos point);
|
|
428
|
703 int window_half_pixpos (struct window *w);
|
|
|
704 void redisplay_echo_area (void);
|
|
|
705 void free_display_structs (struct window_mirror *mir);
|
|
|
706 void free_display_lines (display_line_dynarr *dla);
|
|
442
|
707 void mark_redisplay_structs (display_line_dynarr *dla);
|
|
428
|
708 void generate_displayable_area (struct window *w, Lisp_Object disp_string,
|
|
|
709 int xpos, int ypos, int width, int height,
|
|
|
710 display_line_dynarr* dl,
|
|
665
|
711 Charbpos start_pos, face_index default_face);
|
|
438
|
712 /* `generate_title_string' in frame.c needs this */
|
|
|
713 void generate_formatted_string_db (Lisp_Object format_str,
|
|
|
714 Lisp_Object result_str,
|
|
|
715 struct window *w,
|
|
|
716 struct display_line *dl,
|
|
|
717 struct display_block *db,
|
|
|
718 face_index findex,
|
|
|
719 int min_pixpos, int max_pixpos, int type);
|
|
428
|
720 int real_current_modeline_height (struct window *w);
|
|
|
721 int pixel_to_glyph_translation (struct frame *f, int x_coord,
|
|
|
722 int y_coord, int *col, int *row,
|
|
|
723 int *obj_x, int *obj_y,
|
|
665
|
724 struct window **w, Charbpos *charbpos,
|
|
|
725 Charbpos *closest, Charcount *modeline_closest,
|
|
428
|
726 Lisp_Object *obj1, Lisp_Object *obj2);
|
|
|
727 void glyph_to_pixel_translation (struct window *w, int char_x,
|
|
|
728 int char_y, int *pix_x, int *pix_y);
|
|
665
|
729 int point_in_line_start_cache (struct window *w, Charbpos point,
|
|
428
|
730 int min_past);
|
|
665
|
731 int point_would_be_visible (struct window *w, Charbpos startp,
|
|
826
|
732 Charbpos point);
|
|
665
|
733 Charbpos start_of_last_line (struct window *w, Charbpos startp);
|
|
|
734 Charbpos end_of_last_line (struct window *w, Charbpos startp);
|
|
|
735 Charbpos start_with_line_at_pixpos (struct window *w, Charbpos point,
|
|
826
|
736 int pixpos);
|
|
665
|
737 Charbpos start_with_point_on_display_line (struct window *w, Charbpos point,
|
|
826
|
738 int line);
|
|
428
|
739 int redisplay_variable_changed (Lisp_Object sym, Lisp_Object *val,
|
|
|
740 Lisp_Object in_object, int flags);
|
|
|
741 void redisplay_glyph_changed (Lisp_Object glyph, Lisp_Object property,
|
|
|
742 Lisp_Object locale);
|
|
|
743
|
|
|
744 #ifdef MEMORY_USAGE_STATS
|
|
|
745 int compute_display_line_dynarr_usage (display_line_dynarr *dyn,
|
|
|
746 struct overhead_stats *ovstats);
|
|
|
747 int compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn,
|
|
|
748 struct overhead_stats *ovstats);
|
|
|
749 #endif
|
|
|
750
|
|
|
751
|
|
|
752 /* defined in redisplay-output.c */
|
|
|
753 int get_next_display_block (layout_bounds bounds,
|
|
|
754 display_block_dynarr *dba, int start_pos,
|
|
|
755 int *next_start);
|
|
442
|
756 void redisplay_output_layout (Lisp_Object domain,
|
|
428
|
757 Lisp_Object image_instance,
|
|
617
|
758 struct display_box* db,
|
|
|
759 struct display_glyph_area* dga,
|
|
|
760 face_index findex, int cursor_start,
|
|
|
761 int cursor_width,
|
|
428
|
762 int cursor_height);
|
|
|
763 void redisplay_output_subwindow (struct window *w,
|
|
|
764 Lisp_Object image_instance,
|
|
617
|
765 struct display_box* db,
|
|
|
766 struct display_glyph_area* dga,
|
|
|
767 face_index findex, int cursor_start,
|
|
|
768 int cursor_width,
|
|
428
|
769 int cursor_height);
|
|
617
|
770 void redisplay_unmap_subwindows_maybe (struct frame* f, int x, int y,
|
|
|
771 int width, int height);
|
|
428
|
772 void redisplay_output_pixmap (struct window *w,
|
|
|
773 Lisp_Object image_instance,
|
|
617
|
774 struct display_box* db,
|
|
|
775 struct display_glyph_area* dga,
|
|
|
776 face_index findex, int cursor_start,
|
|
|
777 int cursor_width,
|
|
428
|
778 int cursor_height, int offset_bitmap);
|
|
|
779 int redisplay_calculate_display_boxes (struct display_line *dl, int xpos,
|
|
819
|
780 int xoffset, int yoffset, int start_pixpos,
|
|
|
781 int width, struct display_box* dest,
|
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428
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782 struct display_glyph_area* src);
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783 int redisplay_normalize_glyph_area (struct display_box* dest,
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784 struct display_glyph_area* glyphsrc);
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785 void redisplay_clear_to_window_end (struct window *w, int ypos1, int ypos2);
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786 void redisplay_clear_region (Lisp_Object window, face_index findex, int x,
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787 int y, int width, int height);
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448
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788 void redisplay_clear_top_of_window (struct window *w);
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428
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789 void redisplay_clear_bottom_of_window (struct window *w,
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790 display_line_dynarr *ddla,
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791 int min_start, int max_end);
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792 void redisplay_update_line (struct window *w, int first_line,
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793 int last_line, int update_values);
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794 void redisplay_output_window (struct window *w);
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795 void bevel_modeline (struct window *w, struct display_line *dl);
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665
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796 int redisplay_move_cursor (struct window *w, Charbpos new_point,
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428
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797 int no_output_end);
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798 void redisplay_redraw_cursor (struct frame *f, int run_begin_end_meths);
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799 void output_display_line (struct window *w, display_line_dynarr *cdla,
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800 display_line_dynarr *ddla, int line,
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801 int force_start, int force_end);
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442
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802 void sync_display_line_structs (struct window *w, int line, int do_blocks,
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803 display_line_dynarr *cdla,
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804 display_line_dynarr *ddla);
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428
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805
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440
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806 #endif /* INCLUDED_redisplay_h_ */
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