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0
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1 /* Synchronize redisplay structures and output changes.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1995, 1996 Ben Wing.
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4 Copyright (C) 1996 Chuck Thompson.
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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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25 /* This file has been Mule-ized. */
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26
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27 /* Author: Chuck Thompson */
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28
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29 #include <config.h>
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30 #include "lisp.h"
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31
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32 #include "buffer.h"
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33 #include "window.h"
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34 #include "frame.h"
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35 #include "device.h"
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36 #include "glyphs.h"
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37 #include "redisplay.h"
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38 #include "faces.h"
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39
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40 static int compare_runes (struct window *w, struct rune *crb,
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41 struct rune *drb);
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42 static void redraw_cursor_in_window (struct window *w,
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43 int run_end_begin_glyphs);
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44
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45 /*****************************************************************************
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46 sync_rune_structs
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47
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48 Synchronize the given rune blocks.
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49 ****************************************************************************/
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50 static void
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51 sync_rune_structs (struct window *w, rune_dynarr *cra, rune_dynarr *dra)
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52 {
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53 int rune_elt;
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54 int max_move = ((Dynarr_length (dra) > Dynarr_largest (cra))
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55 ? Dynarr_largest (cra)
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56 : Dynarr_length (dra));
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57
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58 if (max_move)
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59 {
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60 /* #### Doing this directly breaks the encapsulation. But, the
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61 running time of this function has a measurable impact on
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62 redisplay performance so avoiding all excess overhead is a
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63 good thing. Is all of this true? */
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64 memcpy (cra->base, dra->base, sizeof (struct rune) * max_move);
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65 Dynarr_set_size (cra, max_move);
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66 }
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67 else
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68 Dynarr_reset (cra);
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69
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70 for (rune_elt = max_move; rune_elt < Dynarr_length (dra); rune_elt++)
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71 {
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72 struct rune rb, *crb;
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73 struct rune *drb = Dynarr_atp (dra, rune_elt);
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74
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75 crb = &rb;
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76 memcpy (crb, drb, sizeof (struct rune));
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77 Dynarr_add (cra, *crb);
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78 }
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79 }
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80
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81 /*****************************************************************************
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82 sync_display_line_structs
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83
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84 For the given LINE in window W, make the current display line equal
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85 the desired display line.
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86 ****************************************************************************/
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87 static void
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88 sync_display_line_structs (struct window *w, int line, int do_blocks,
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89 display_line_dynarr *cdla,
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90 display_line_dynarr *ddla)
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91 {
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92 int cdla_len = Dynarr_length (cdla);
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93
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94 struct display_line dl, *clp, *dlp;
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95 int db_elt;
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96
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97 dlp = Dynarr_atp (ddla, line);
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98 if (line >= Dynarr_largest (cdla))
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99 {
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100 clp = &dl;
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185
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101 clp->display_blocks = Dynarr_new (display_block);
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0
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102 }
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103 else
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104 {
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105 clp = Dynarr_atp (cdla, line);
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106 if (clp->display_blocks)
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107 Dynarr_reset (clp->display_blocks);
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108 if (clp->left_glyphs)
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109 {
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110 Dynarr_free (clp->left_glyphs);
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111 clp->left_glyphs = 0;
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112 }
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113 if (clp->right_glyphs)
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114 {
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115 Dynarr_free (clp->right_glyphs);
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116 clp->right_glyphs = 0;
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117 }
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118 }
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119 {
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120 display_block_dynarr *tdb = clp->display_blocks;
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121
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122 memcpy (clp, dlp, sizeof (struct display_line));
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123 clp->display_blocks = tdb;
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124 clp->left_glyphs = 0;
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125 clp->right_glyphs = 0;
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126 }
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127
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128 if (!do_blocks && line >= cdla_len)
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129 {
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130 Dynarr_add (cdla, *clp);
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131 return;
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132 }
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133
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134 for (db_elt = 0; db_elt < Dynarr_length (dlp->display_blocks); db_elt++)
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135 {
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136 struct display_block db, *cdb;
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137 struct display_block *ddb = Dynarr_atp (dlp->display_blocks, db_elt);
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138
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139 if (db_elt >= Dynarr_largest (clp->display_blocks))
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140 {
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141 cdb = &db;
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142 memcpy (cdb, ddb, sizeof (struct display_block));
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185
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143 cdb->runes = Dynarr_new (rune);
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0
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144 Dynarr_add (clp->display_blocks, *cdb);
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145 }
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146 else
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147 {
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148 rune_dynarr *tr;
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149
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150 cdb = Dynarr_atp (clp->display_blocks, db_elt);
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151 tr = cdb->runes;
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152 memcpy (cdb, ddb, sizeof (struct display_block));
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153 cdb->runes = tr;
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154 Dynarr_increment (clp->display_blocks);
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155 }
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156
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157 sync_rune_structs (w, cdb->runes, ddb->runes);
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158 }
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159
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160 if (line >= cdla_len)
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161 Dynarr_add (cdla, *clp);
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162 }
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163
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164 /*****************************************************************************
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165 compare_runes
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166
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167 Compare to runes to see if each of their fields is equal. If so,
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168 return true otherwise return false.
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169 ****************************************************************************/
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170 static int
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171 compare_runes (struct window *w, struct rune *crb, struct rune *drb)
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172 {
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173 /* Do not compare the values of bufpos and endpos. They do not
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174 affect the display characteristics. */
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175
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176 if ((crb->findex != drb->findex) ||
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177 (WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)))
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178 return 0;
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179 else if (crb->xpos != drb->xpos)
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180 return 0;
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181 else if (crb->width != drb->width)
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182 return 0;
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183 else if (crb->cursor_type != drb->cursor_type)
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184 return 0;
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185 else if (crb->type != drb->type)
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186 return 0;
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187 else if (crb->type == RUNE_CHAR &&
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188 (crb->object.chr.ch != drb->object.chr.ch))
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189 return 0;
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190 else if (crb->type == RUNE_DGLYPH &&
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191 (!EQ (crb->object.dglyph.glyph, drb->object.dglyph.glyph) ||
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192 !EQ (crb->object.dglyph.extent, drb->object.dglyph.extent) ||
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193 crb->object.dglyph.xoffset != drb->object.dglyph.xoffset))
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194 return 0;
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195 else if (crb->type == RUNE_HLINE &&
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196 (crb->object.hline.thickness != drb->object.hline.thickness ||
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197 crb->object.hline.yoffset != drb->object.hline.yoffset))
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198 return 0;
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199 else
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200 return 1;
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201 }
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202
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203 /*****************************************************************************
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204 get_next_display_block
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205
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206 Return the next display starting at or overlapping START_POS. Return
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207 the start of the next region in NEXT_START.
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208 ****************************************************************************/
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209 int
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210 get_next_display_block (layout_bounds bounds, display_block_dynarr *dba,
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211 int start_pos, int *next_start)
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212 {
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213 int next_display_block = NO_BLOCK;
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214 int priority = -1;
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215 int block;
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216
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217 /* If we don't find a display block covering or starting at
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218 start_pos, then we return the starting point of the next display
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219 block or the next division boundary, whichever is closer to
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220 start_pos. */
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221 if (next_start)
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222 {
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223 if (start_pos >= bounds.left_out && start_pos < bounds.left_in)
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224 *next_start = bounds.left_in;
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225 else if (start_pos < bounds.left_white)
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226 *next_start = bounds.left_white;
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227 else if (start_pos < bounds.right_white)
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228 *next_start = bounds.right_white;
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229 else if (start_pos < bounds.right_in)
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230 *next_start = bounds.right_in;
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231 else if (start_pos <= bounds.right_out)
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232 *next_start = bounds.right_out;
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233 else
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234 abort ();
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235 }
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236
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237 for (block = 0; block < Dynarr_length (dba); block++)
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238 {
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239 struct display_block *db = Dynarr_atp (dba, block);
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240
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241 if (db->start_pos <= start_pos && db->end_pos > start_pos)
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242 {
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243 if ((int) db->type > priority)
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244 {
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245 priority = db->type;
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246 next_display_block = block;
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247 if (next_start)
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248 *next_start = db->end_pos;
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249 }
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250 }
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251 else if (next_start && db->start_pos > start_pos)
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252 {
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253 if (db->start_pos < *next_start)
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254 *next_start = db->start_pos;
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255 }
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256 }
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257
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258 return next_display_block;
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259 }
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260
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261 /*****************************************************************************
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262 get_cursor_size_and_location
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263
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264 Return the information defining the pixel location of the cursor.
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265 ****************************************************************************/
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266 static void
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267 get_cursor_size_and_location (struct window *w, struct display_block *db,
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268 int cursor_location,
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269 int *cursor_start, int *cursor_width,
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270 int *cursor_height)
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271 {
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272 struct rune *rb;
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272
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273 Lisp_Object window;
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0
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274 int defheight, defwidth;
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275
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276 if (Dynarr_length (db->runes) <= cursor_location)
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277 abort ();
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278
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279 XSETWINDOW (window, w);
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280
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281 rb = Dynarr_atp (db->runes, cursor_location);
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282 *cursor_start = rb->xpos;
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283
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284 default_face_height_and_width (window, &defheight, &defwidth);
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285 *cursor_height = defheight;
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286
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287 if (rb->type == RUNE_BLANK)
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288 *cursor_width = defwidth;
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289 else
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290 *cursor_width = rb->width;
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291 }
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292
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293 /*****************************************************************************
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294 compare_display_blocks
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295
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296 Given two display blocks, output only those areas where they differ.
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297 ****************************************************************************/
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298 static int
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299 compare_display_blocks (struct window *w, struct display_line *cdl,
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300 struct display_line *ddl, int c_block, int d_block,
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301 int start_pixpos, int cursor_start, int cursor_width,
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302 int cursor_height)
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303 {
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304 struct frame *f = XFRAME (w->frame);
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305 struct device *d = XDEVICE (f->device);
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306
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307 struct display_block *cdb, *ddb;
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308 int start_pos;
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309 int stop_pos;
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310 int force = 0;
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311 int block_end;
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312
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313 cdb = Dynarr_atp (cdl->display_blocks, c_block);
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314 ddb = Dynarr_atp (ddl->display_blocks, d_block);
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315
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316 assert (cdb->type == ddb->type);
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317
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318 start_pos = -1;
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319 stop_pos = min (Dynarr_length (cdb->runes), Dynarr_length (ddb->runes));
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320
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321 block_end =
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322 (!Dynarr_length (ddb->runes)
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323 ? 0
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324 : (Dynarr_atp (ddb->runes, Dynarr_length (ddb->runes) - 1)->xpos +
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325 Dynarr_atp (ddb->runes, Dynarr_length (ddb->runes) - 1)->width));
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326
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327 /* If the new block type is not text and the cursor status is
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328 changing and it overlaps the position of this block then force a
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329 full redraw of the block in order to make sure that the cursor is
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330 updated properly. */
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331 if (ddb->type != TEXT
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116
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332 #if 0
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333 /* I'm not sure exactly what this code wants to do, but it's
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334 * not right--it doesn't update when cursor_elt changes from, e.g.,
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335 * 0 to 8, and the new or old cursor loc overlaps this block.
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336 * I've replaced it with the more conservative test below.
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337 * -dkindred@cs.cmu.edu 23-Mar-1997 */
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0
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338 && ((cdl->cursor_elt == -1 && ddl->cursor_elt != -1)
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339 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1))
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340 && (ddl->cursor_elt == -1 ||
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341 (cursor_start
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342 && cursor_width
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343 && (cursor_start + cursor_width) >= start_pixpos
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116
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344 && cursor_start <= block_end))
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345 #else
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346 && (cdl->cursor_elt != ddl->cursor_elt)
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347 #endif
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348 )
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0
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349 force = 1;
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350
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351 if (f->windows_structure_changed ||
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352 f->faces_changed ||
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269
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353 f->glyphs_changed ||
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0
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354 cdl->ypos != ddl->ypos ||
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355 cdl->ascent != ddl->ascent ||
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356 cdl->descent != ddl->descent ||
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357 cdl->clip != ddl->clip ||
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358 force)
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359 {
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360 start_pos = 0;
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361 force = 1;
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362 }
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363 else
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364 {
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365 int elt = 0;
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366
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367 while (start_pos < 0 && elt < stop_pos)
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368 {
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369 if (!compare_runes (w, Dynarr_atp (cdb->runes, elt),
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370 Dynarr_atp (ddb->runes, elt)))
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371 {
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372 start_pos = elt;
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373 }
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374 else
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375 {
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376 elt++;
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377 }
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378 }
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379
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380 /* If nothing has changed in the area where the blocks overlap, but
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381 there are new blocks in the desired block, then adjust the start
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382 point accordingly. */
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383 if (elt == stop_pos && stop_pos < Dynarr_length (ddb->runes))
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384 start_pos = stop_pos;
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385 }
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386
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387 if (start_pos >= 0)
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388 {
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389 if ((Dynarr_length (ddb->runes) != Dynarr_length (cdb->runes))
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390 || force)
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391 {
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392 stop_pos = Dynarr_length (ddb->runes);
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393 }
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394 else
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395 {
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396 /* If the lines have the same number of runes and we are not
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397 forcing a full redraw because the display line has
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398 changed position then we try and optimize how much of the
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399 line we actually redraw by scanning backwards from the
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400 end for the first changed rune. This optimization is
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401 almost always triggered by face changes. */
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402
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403 int elt = Dynarr_length (ddb->runes) - 1;
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404
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405 while (elt > start_pos)
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406 {
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407 if (!compare_runes (w, Dynarr_atp (cdb->runes, elt),
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408 Dynarr_atp (ddb->runes, elt)))
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|
409 break;
|
|
|
410 else
|
|
|
411 elt--;
|
|
|
412 }
|
|
|
413 stop_pos = elt + 1;
|
|
|
414 }
|
|
|
415
|
|
|
416 DEVMETH (d, output_display_block, (w, ddl, d_block, start_pos,
|
|
|
417 stop_pos, start_pixpos,
|
|
|
418 cursor_start, cursor_width,
|
|
|
419 cursor_height));
|
|
|
420 return 1;
|
|
|
421 }
|
|
|
422
|
|
|
423 return 0;
|
|
|
424 }
|
|
|
425
|
|
|
426 /*****************************************************************************
|
|
|
427 clear_left_border
|
|
|
428
|
|
|
429 Clear the lefthand outside border.
|
|
|
430 ****************************************************************************/
|
|
|
431 static void
|
|
|
432 clear_left_border (struct window *w, int y, int height)
|
|
|
433 {
|
|
|
434 struct frame *f = XFRAME (w->frame);
|
|
|
435 struct device *d = XDEVICE (f->device);
|
|
|
436 Lisp_Object window;
|
|
|
437
|
|
|
438 XSETWINDOW (window, w);
|
|
|
439 DEVMETH (d, clear_region, (window, DEFAULT_INDEX,
|
|
|
440 FRAME_LEFT_BORDER_START (f), y,
|
|
|
441 FRAME_BORDER_WIDTH (f), height));
|
|
|
442 }
|
|
|
443
|
|
|
444 /*****************************************************************************
|
|
|
445 clear_right_border
|
|
|
446
|
|
|
447 Clear the righthand outside border.
|
|
|
448 ****************************************************************************/
|
|
|
449 static void
|
|
|
450 clear_right_border (struct window *w, int y, int height)
|
|
|
451 {
|
|
|
452 struct frame *f = XFRAME (w->frame);
|
|
|
453 struct device *d = XDEVICE (f->device);
|
|
|
454 Lisp_Object window;
|
|
|
455
|
|
|
456 XSETWINDOW (window, w);
|
|
|
457 DEVMETH (d, clear_region, (window, DEFAULT_INDEX,
|
|
|
458 FRAME_RIGHT_BORDER_START (f),
|
|
|
459 y, FRAME_BORDER_WIDTH (f), height));
|
|
|
460 }
|
|
|
461
|
|
|
462 /*****************************************************************************
|
|
|
463 output_display_line
|
|
|
464
|
|
|
465 Ensure that the contents of the given display line is correct
|
|
|
466 on-screen. The force_ parameters are used by redisplay_move_cursor
|
|
|
467 to correctly update cursor locations and only cursor locations.
|
|
|
468 ****************************************************************************/
|
|
|
469 void
|
|
|
470 output_display_line (struct window *w, display_line_dynarr *cdla,
|
|
|
471 display_line_dynarr *ddla, int line, int force_start,
|
|
|
472 int force_end)
|
|
|
473
|
|
|
474 {
|
|
|
475 struct frame *f = XFRAME (w->frame);
|
|
|
476 struct device *d = XDEVICE (f->device);
|
|
|
477 struct buffer *b = XBUFFER (w->buffer);
|
|
|
478 struct buffer *old_b = window_display_buffer (w);
|
|
|
479 struct display_line *cdl, *ddl;
|
|
|
480 display_block_dynarr *cdba, *ddba;
|
|
|
481 int start_pixpos, end_pixpos;
|
|
|
482 int cursor_start, cursor_width, cursor_height;
|
|
|
483
|
|
|
484 int force = (force_start >= 0 || force_end >= 0);
|
|
|
485 int clear_border = 0;
|
|
|
486 int must_sync = 0;
|
|
|
487
|
|
|
488 if (cdla && line < Dynarr_length (cdla))
|
|
|
489 {
|
|
|
490 cdl = Dynarr_atp (cdla, line);
|
|
|
491 cdba = cdl->display_blocks;
|
|
|
492 }
|
|
|
493 else
|
|
|
494 {
|
|
|
495 cdl = NULL;
|
|
|
496 cdba = NULL;
|
|
|
497 }
|
|
|
498
|
|
|
499 ddl = Dynarr_atp (ddla, line); /* assert line < Dynarr_length (ddla) */
|
|
|
500 ddba = ddl->display_blocks;
|
|
|
501
|
|
|
502 if (force_start >= 0 && force_start >= ddl->bounds.left_out)
|
|
|
503 start_pixpos = force_start;
|
|
|
504 else
|
|
|
505 start_pixpos = ddl->bounds.left_out;
|
|
|
506
|
|
|
507 if (force_end >= 0 && force_end < ddl->bounds.right_out)
|
|
|
508 end_pixpos = force_end;
|
|
|
509 else
|
|
|
510 end_pixpos = ddl->bounds.right_out;
|
|
|
511
|
|
|
512 /* Get the cursor parameters. */
|
|
|
513 if (ddl->cursor_elt != -1)
|
|
|
514 {
|
|
|
515 struct display_block *db;
|
|
|
516
|
|
|
517 /* If the lines cursor parameter is not -1 then it indicates
|
|
|
518 which rune in the TEXT block contains the cursor. This means
|
|
|
519 that there must be at least one display block. The TEXT
|
|
|
520 block, if present, must always be the first display block. */
|
|
|
521 assert (Dynarr_length (ddba) != 0);
|
|
|
522
|
|
|
523 db = Dynarr_atp (ddba, 0);
|
|
|
524 assert (db->type == TEXT);
|
|
|
525
|
|
|
526 get_cursor_size_and_location (w, db, ddl->cursor_elt, &cursor_start,
|
|
|
527 &cursor_width, &cursor_height);
|
|
|
528 }
|
|
|
529 else
|
|
|
530 {
|
|
|
531 cursor_start = cursor_width = cursor_height = 0;
|
|
|
532 }
|
|
|
533
|
|
|
534 /* The modeline should only have a single block and it had better be
|
|
|
535 a TEXT block. */
|
|
|
536 if (ddl->modeline)
|
|
|
537 {
|
|
380
|
538 /* The shadow thickness check is necessary if only the sign of
|
|
0
|
539 the size changed. */
|
|
|
540 if (cdba && !w->shadow_thickness_changed)
|
|
|
541 {
|
|
|
542 must_sync |= compare_display_blocks (w, cdl, ddl, 0, 0,
|
|
|
543 start_pixpos, 0, 0, 0);
|
|
|
544 }
|
|
|
545 else
|
|
|
546 {
|
|
|
547 DEVMETH (d, output_display_block, (w, ddl, 0, 0, -1, start_pixpos,
|
|
|
548 0, 0, 0));
|
|
|
549 must_sync = 1;
|
|
|
550 }
|
|
|
551
|
|
|
552 if (must_sync)
|
|
|
553 clear_border = 1;
|
|
|
554 }
|
|
|
555
|
|
|
556 while (!ddl->modeline && start_pixpos < end_pixpos)
|
|
|
557 {
|
|
|
558 int block;
|
|
|
559 int next_start_pixpos;
|
|
|
560
|
|
|
561 block = get_next_display_block (ddl->bounds, ddba, start_pixpos,
|
|
|
562 &next_start_pixpos);
|
|
|
563
|
|
|
564 /* If we didn't find a block then we should blank the area
|
|
|
565 between start_pos and next_start if necessary. */
|
|
|
566 if (block == NO_BLOCK)
|
|
|
567 {
|
|
|
568 /* We only erase those areas which were actually previously
|
|
|
569 covered by a display block unless the window structure
|
|
|
570 changed. In that case we clear all areas since the current
|
|
|
571 structures may actually represent a different buffer. */
|
|
|
572 while (start_pixpos < next_start_pixpos)
|
|
|
573 {
|
|
|
574 int block_end;
|
|
|
575 int old_block;
|
|
|
576
|
|
|
577 if (cdba)
|
|
|
578 old_block = get_next_display_block (ddl->bounds, cdba,
|
|
|
579 start_pixpos, &block_end);
|
|
|
580 else
|
|
|
581 {
|
|
|
582 old_block = NO_BLOCK;
|
|
|
583 block_end = next_start_pixpos;
|
|
|
584 }
|
|
|
585
|
|
|
586 if (!cdba || old_block != NO_BLOCK || b != old_b ||
|
|
|
587 f->windows_structure_changed ||
|
|
|
588 f->faces_changed ||
|
|
|
589 force ||
|
|
|
590 (cdl && (cdl->ypos != ddl->ypos ||
|
|
|
591 cdl->ascent != ddl->ascent ||
|
|
|
592 cdl->descent != ddl->descent ||
|
|
|
593 cdl->clip != ddl->clip)))
|
|
|
594 {
|
|
|
595 int x, y, width, height;
|
|
|
596 Lisp_Object face;
|
|
|
597
|
|
|
598 must_sync = 1;
|
|
|
599 x = start_pixpos;
|
|
|
600 y = ddl->ypos - ddl->ascent;
|
|
|
601 width = min (next_start_pixpos, block_end) - x;
|
|
|
602 height = ddl->ascent + ddl->descent - ddl->clip;
|
|
|
603
|
|
|
604 if (x < ddl->bounds.left_in)
|
|
|
605 face = Vleft_margin_face;
|
|
|
606 else if (x < ddl->bounds.right_in)
|
|
|
607 face = Vdefault_face;
|
|
|
608 else if (x < ddl->bounds.right_out)
|
|
|
609 face = Vright_margin_face;
|
|
|
610 else
|
|
|
611 face = Qnil;
|
|
|
612
|
|
|
613 if (!NILP (face))
|
|
|
614 {
|
|
|
615 Lisp_Object window;
|
|
|
616
|
|
|
617 XSETWINDOW (window, w);
|
|
|
618
|
|
|
619 /* Clear the empty area. */
|
|
|
620 DEVMETH (d, clear_region,
|
|
|
621 (window, get_builtin_face_cache_index (w,
|
|
|
622 face),
|
|
|
623 x, y, width, height));
|
|
|
624
|
|
|
625 /* Mark that we should clear the border. This is
|
|
|
626 necessary because italic fonts may leave
|
|
|
627 droppings in the border. */
|
|
|
628 clear_border = 1;
|
|
|
629 }
|
|
|
630 }
|
|
|
631
|
|
|
632 start_pixpos = min (next_start_pixpos, block_end);
|
|
|
633 }
|
|
|
634 }
|
|
|
635 else
|
|
|
636 {
|
|
|
637 struct display_block *cdb, *ddb;
|
|
|
638 int block_end;
|
|
|
639 int old_block;
|
|
|
640
|
|
|
641 if (cdba)
|
|
|
642 old_block = get_next_display_block (ddl->bounds, cdba,
|
|
|
643 start_pixpos, &block_end);
|
|
|
644 else
|
|
|
645 old_block = NO_BLOCK;
|
|
|
646
|
|
|
647 ddb = Dynarr_atp (ddba, block);
|
|
|
648 cdb = (old_block != NO_BLOCK ? Dynarr_atp (cdba, old_block) : 0);
|
|
|
649
|
|
|
650 /* If there was formerly no block over the current
|
|
|
651 region or if it was a block of a different type, then
|
|
|
652 output the entire ddb. Otherwise, compare cdb and
|
|
|
653 ddb and output only the changed region. */
|
|
|
654 if (!force && cdb && ddb->type == cdb->type && b == old_b)
|
|
|
655 {
|
|
|
656 must_sync |= compare_display_blocks (w, cdl, ddl, old_block,
|
|
|
657 block, start_pixpos,
|
|
|
658 cursor_start, cursor_width,
|
|
|
659 cursor_height);
|
|
|
660 }
|
|
|
661 else
|
|
|
662 {
|
|
|
663 int elt;
|
|
|
664 int first_elt = 0;
|
|
|
665 int last_elt = -1;
|
|
|
666
|
|
|
667 for (elt = 0; elt < Dynarr_length (ddb->runes); elt++)
|
|
|
668 {
|
|
|
669 struct rune *rb = Dynarr_atp (ddb->runes, elt);
|
|
|
670
|
|
|
671 if (start_pixpos >= rb->xpos
|
|
|
672 && start_pixpos < rb->xpos + rb->width)
|
|
|
673 first_elt = elt;
|
|
|
674
|
|
|
675 if (end_pixpos > rb->xpos
|
|
|
676 && end_pixpos <= rb->xpos + rb->width)
|
|
|
677 {
|
|
|
678 last_elt = elt + 1;
|
|
|
679 if (last_elt > Dynarr_length (ddb->runes))
|
|
|
680 last_elt = Dynarr_length (ddb->runes);
|
|
|
681 break;
|
|
|
682 }
|
|
|
683 }
|
|
|
684
|
|
|
685 must_sync = 1;
|
|
|
686 DEVMETH (d, output_display_block, (w, ddl, block, first_elt,
|
|
|
687 last_elt,
|
|
|
688 start_pixpos,
|
|
|
689 cursor_start, cursor_width,
|
|
|
690 cursor_height));
|
|
|
691 }
|
|
|
692
|
|
|
693 start_pixpos = next_start_pixpos;
|
|
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697 /* Clear the internal border if we are next to it and the window
|
|
|
698 structure or frame size has changed or if something caused
|
|
|
699 clear_border to be tripped. */
|
|
|
700 /* #### Doing this on f->clear sucks but is necessary because of
|
|
|
701 window-local background values. */
|
|
|
702 if (f->windows_structure_changed || f->faces_changed || clear_border
|
|
|
703 || f->clear)
|
|
|
704 {
|
|
|
705 int y = ddl->ypos - ddl->ascent;
|
|
|
706 int height = ddl->ascent + ddl->descent - ddl->clip;
|
|
|
707
|
|
|
708 if (ddl->modeline)
|
|
|
709 {
|
|
|
710 y -= MODELINE_SHADOW_THICKNESS (w);
|
|
|
711 height += (2 * MODELINE_SHADOW_THICKNESS (w));
|
|
|
712 }
|
|
|
713
|
|
|
714 if (window_is_leftmost (w))
|
|
|
715 clear_left_border (w, y, height);
|
|
|
716 if (window_is_rightmost (w))
|
|
|
717 clear_right_border (w, y, height);
|
|
|
718 }
|
|
|
719
|
|
|
720 if (cdla)
|
|
|
721 sync_display_line_structs (w, line, must_sync, cdla, ddla);
|
|
|
722 }
|
|
|
723
|
|
|
724 /*****************************************************************************
|
|
|
725 redisplay_move_cursor
|
|
|
726
|
|
|
727 For the given window W, move the cursor to NEW_POINT. Returns a
|
|
|
728 boolean indicating success or failure.
|
|
|
729 ****************************************************************************/
|
|
|
730
|
|
|
731 #define ADJ_BUFPOS (rb->bufpos + dl->offset)
|
|
|
732 #define ADJ_ENDPOS (rb->endpos + dl->offset)
|
|
|
733
|
|
|
734 int
|
|
|
735 redisplay_move_cursor (struct window *w, Bufpos new_point, int no_output_end)
|
|
|
736 {
|
|
|
737 struct frame *f = XFRAME (w->frame);
|
|
|
738 struct device *d = XDEVICE (f->device);
|
|
|
739
|
|
|
740 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP);
|
|
|
741 struct display_line *dl;
|
|
|
742 struct display_block *db;
|
|
|
743 struct rune *rb;
|
|
|
744 int x = w->last_point_x[CURRENT_DISP];
|
|
|
745 int y = w->last_point_y[CURRENT_DISP];
|
|
|
746
|
|
263
|
747 /*
|
|
265
|
748 * Bail if cursor_in_echo_area is non-zero and we're fiddling with
|
|
|
749 * the cursor in a non-active minibuffer window, since that is a
|
|
|
750 * special case that is handled elsewhere and this function need
|
|
|
751 * not handle it. Return 1 so the caller will assume we
|
|
263
|
752 * succeeded.
|
|
|
753 */
|
|
265
|
754 if (cursor_in_echo_area && MINI_WINDOW_P (w) &&
|
|
|
755 w != XWINDOW (FRAME_SELECTED_WINDOW (f)))
|
|
263
|
756 return 1;
|
|
|
757
|
|
0
|
758 if (y < 0 || y >= Dynarr_length (cla))
|
|
|
759 return 0;
|
|
|
760
|
|
|
761 dl = Dynarr_atp (cla, y);
|
|
|
762 db = get_display_block_from_line (dl, TEXT);
|
|
|
763
|
|
|
764 if (x < 0 || x >= Dynarr_length (db->runes))
|
|
|
765 return 0;
|
|
|
766
|
|
|
767 rb = Dynarr_atp (db->runes, x);
|
|
|
768
|
|
|
769 if (rb->cursor_type == CURSOR_OFF)
|
|
|
770 return 0;
|
|
|
771 else if (ADJ_BUFPOS == new_point
|
|
|
772 || (ADJ_ENDPOS && (new_point >= ADJ_BUFPOS)
|
|
|
773 && (new_point <= ADJ_ENDPOS)))
|
|
|
774 {
|
|
|
775 w->last_point_x[CURRENT_DISP] = x;
|
|
|
776 w->last_point_y[CURRENT_DISP] = y;
|
|
|
777 Fset_marker (w->last_point[CURRENT_DISP], make_int (ADJ_BUFPOS),
|
|
|
778 w->buffer);
|
|
|
779 dl->cursor_elt = x;
|
|
|
780 return 1;
|
|
|
781 }
|
|
|
782 else
|
|
|
783 {
|
|
|
784 DEVMETH (d, output_begin, (d));
|
|
|
785
|
|
|
786 /* #### This is a gross kludge. Cursor handling is such a royal
|
|
|
787 pain in the ass. */
|
|
|
788 if (rb->type == RUNE_DGLYPH &&
|
|
|
789 (EQ (rb->object.dglyph.glyph, Vtruncation_glyph) ||
|
|
|
790 EQ (rb->object.dglyph.glyph, Vcontinuation_glyph)))
|
|
|
791 rb->cursor_type = NO_CURSOR;
|
|
|
792 else
|
|
|
793 rb->cursor_type = CURSOR_OFF;
|
|
|
794 dl->cursor_elt = -1;
|
|
|
795 output_display_line (w, 0, cla, y, rb->xpos, rb->xpos + rb->width);
|
|
|
796 }
|
|
|
797
|
|
|
798 w->last_point_x[CURRENT_DISP] = -1;
|
|
|
799 w->last_point_y[CURRENT_DISP] = -1;
|
|
|
800 Fset_marker (w->last_point[CURRENT_DISP], Qnil, w->buffer);
|
|
|
801
|
|
|
802 /* If this isn't the selected frame, then erasing the old cursor is
|
|
|
803 all we actually had to do. */
|
|
|
804 if (w != XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d))))
|
|
|
805 {
|
|
|
806 if (!no_output_end)
|
|
|
807 DEVMETH (d, output_end, (d));
|
|
|
808
|
|
|
809 return 1;
|
|
|
810 }
|
|
|
811
|
|
|
812 /* This should only occur in the minibuffer. */
|
|
|
813 if (new_point == 0)
|
|
|
814 {
|
|
|
815 w->last_point_x[CURRENT_DISP] = 0;
|
|
|
816 w->last_point_y[CURRENT_DISP] = y;
|
|
|
817 Fset_marker (w->last_point[CURRENT_DISP], Qzero, w->buffer);
|
|
|
818
|
|
|
819 rb = Dynarr_atp (db->runes, 0);
|
|
|
820 rb->cursor_type = CURSOR_ON;
|
|
|
821 dl->cursor_elt = 0;
|
|
|
822
|
|
|
823 output_display_line (w, 0, cla, y, rb->xpos, rb->xpos + rb->width);
|
|
|
824
|
|
|
825 if (!no_output_end)
|
|
|
826 DEVMETH (d, output_end, (d));
|
|
|
827 return 1;
|
|
|
828 }
|
|
|
829 else
|
|
|
830 {
|
|
|
831 int cur_rb = 0;
|
|
|
832 int first = 0;
|
|
|
833 int cur_dl, up;
|
|
|
834
|
|
|
835 if (ADJ_BUFPOS < new_point)
|
|
|
836 {
|
|
|
837 up = 1;
|
|
|
838 cur_rb = x + 1;
|
|
|
839 cur_dl = y;
|
|
|
840 }
|
|
|
841 else /* (rb->bufpos + dl->offset) > new_point */
|
|
|
842 {
|
|
|
843 up = 0;
|
|
|
844
|
|
|
845 if (!x)
|
|
|
846 {
|
|
|
847 cur_dl = y - 1;
|
|
|
848 first = 0;
|
|
|
849 }
|
|
|
850 else
|
|
|
851 {
|
|
|
852 cur_rb = x - 1;
|
|
|
853 cur_dl = y;
|
|
|
854 first = 1;
|
|
|
855 }
|
|
|
856 }
|
|
|
857
|
|
|
858 while ((up ? (cur_dl < Dynarr_length (cla)) : (cur_dl >= 0)))
|
|
|
859 {
|
|
|
860 dl = Dynarr_atp (cla, cur_dl);
|
|
|
861 db = get_display_block_from_line (dl, TEXT);
|
|
|
862
|
|
|
863 if (!up && !first)
|
|
|
864 cur_rb = Dynarr_length (db->runes) - 1;
|
|
|
865
|
|
|
866 while ((!scroll_on_clipped_lines || !dl->clip) &&
|
|
|
867 (up ? (cur_rb < Dynarr_length (db->runes)) : (cur_rb >= 0)))
|
|
|
868 {
|
|
|
869 rb = Dynarr_atp (db->runes, cur_rb);
|
|
|
870
|
|
|
871 if (rb->cursor_type != IGNORE_CURSOR
|
|
|
872 && rb->cursor_type != NO_CURSOR &&
|
|
|
873 (ADJ_BUFPOS == new_point
|
|
|
874 || (ADJ_ENDPOS && (new_point >= ADJ_BUFPOS)
|
|
|
875 && (new_point <= ADJ_BUFPOS))))
|
|
|
876 {
|
|
|
877 rb->cursor_type = CURSOR_ON;
|
|
|
878 dl->cursor_elt = cur_rb;
|
|
185
|
879
|
|
0
|
880
|
|
|
881 output_display_line (w, 0, cla, cur_dl, rb->xpos,
|
|
|
882 rb->xpos + rb->width);
|
|
|
883
|
|
|
884 w->last_point_x[CURRENT_DISP] = cur_rb;
|
|
|
885 w->last_point_y[CURRENT_DISP] = cur_dl;
|
|
|
886 Fset_marker (w->last_point[CURRENT_DISP],
|
|
|
887 make_int (ADJ_BUFPOS), w->buffer);
|
|
|
888
|
|
|
889 if (!no_output_end)
|
|
|
890 DEVMETH (d, output_end, (d));
|
|
|
891 return 1;
|
|
|
892 }
|
|
|
893
|
|
|
894 (up ? cur_rb++ : cur_rb--);
|
|
|
895 }
|
|
|
896
|
|
|
897 (up ? (cur_rb = 0) : (first = 0));
|
|
|
898 (up ? cur_dl++ : cur_dl--);
|
|
|
899 }
|
|
|
900 }
|
|
|
901
|
|
|
902 if (!no_output_end)
|
|
|
903 DEVMETH (d, output_end, (d));
|
|
|
904 return 0;
|
|
|
905 }
|
|
|
906 #undef ADJ_BUFPOS
|
|
|
907 #undef ADJ_ENDPOS
|
|
|
908
|
|
|
909 /*****************************************************************************
|
|
|
910 redraw_cursor_in_window
|
|
|
911
|
|
|
912 For the given window W, redraw the cursor if it is contained within
|
|
|
913 the window.
|
|
|
914 ****************************************************************************/
|
|
|
915 static void
|
|
|
916 redraw_cursor_in_window (struct window *w, int run_end_begin_meths)
|
|
|
917 {
|
|
|
918 struct frame *f = XFRAME (w->frame);
|
|
|
919 struct device *d = XDEVICE (f->device);
|
|
|
920
|
|
|
921 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP);
|
|
|
922 struct display_line *dl;
|
|
|
923 struct display_block *db;
|
|
|
924 struct rune *rb;
|
|
|
925
|
|
|
926 int x = w->last_point_x[CURRENT_DISP];
|
|
|
927 int y = w->last_point_y[CURRENT_DISP];
|
|
|
928
|
|
265
|
929 if (cursor_in_echo_area && MINI_WINDOW_P (w) &&
|
|
|
930 !echo_area_active (f) && minibuf_level == 0)
|
|
|
931 {
|
|
|
932 MAYBE_DEVMETH (d, set_final_cursor_coords, (f, w->pixel_top, 0));
|
|
|
933 }
|
|
|
934
|
|
0
|
935 if (y < 0 || y >= Dynarr_length (dla))
|
|
|
936 return;
|
|
|
937
|
|
|
938 if (MINI_WINDOW_P (w) && f != device_selected_frame (d) &&
|
|
|
939 !is_surrogate_for_selected_frame (f))
|
|
|
940 return;
|
|
|
941
|
|
|
942 dl = Dynarr_atp (dla, y);
|
|
|
943 db = get_display_block_from_line (dl, TEXT);
|
|
|
944
|
|
|
945 if (x < 0 || x >= Dynarr_length (db->runes))
|
|
|
946 return;
|
|
|
947
|
|
|
948 rb = Dynarr_atp (db->runes, x);
|
|
|
949
|
|
|
950 /* Don't call the output routine if the block isn't actually the
|
|
|
951 cursor. */
|
|
|
952 if (rb->cursor_type == CURSOR_ON)
|
|
|
953 {
|
|
265
|
954 MAYBE_DEVMETH (d, set_final_cursor_coords,
|
|
|
955 (f, dl->ypos - 1, rb->xpos));
|
|
|
956
|
|
0
|
957 if (run_end_begin_meths)
|
|
|
958 DEVMETH (d, output_begin, (d));
|
|
|
959
|
|
|
960 output_display_line (w, 0, dla, y, rb->xpos, rb->xpos + rb->width);
|
|
|
961
|
|
|
962 if (run_end_begin_meths)
|
|
|
963 DEVMETH (d, output_end, (d));
|
|
|
964 }
|
|
|
965 }
|
|
|
966
|
|
|
967 /*****************************************************************************
|
|
|
968 redisplay_redraw_cursor
|
|
|
969
|
|
|
970 For the given frame F, redraw the cursor on the selected window.
|
|
|
971 This is used to update the cursor after focus changes.
|
|
|
972 ****************************************************************************/
|
|
|
973 void
|
|
|
974 redisplay_redraw_cursor (struct frame *f, int run_end_begin_meths)
|
|
|
975 {
|
|
272
|
976 Lisp_Object window;
|
|
|
977
|
|
|
978 if (!cursor_in_echo_area)
|
|
|
979 window = FRAME_SELECTED_WINDOW (f);
|
|
|
980 else if (FRAME_HAS_MINIBUF_P (f))
|
|
|
981 window = FRAME_MINIBUF_WINDOW (f);
|
|
|
982 else
|
|
|
983 return;
|
|
|
984
|
|
|
985 redraw_cursor_in_window (XWINDOW (window), run_end_begin_meths);
|
|
0
|
986 }
|
|
|
987
|
|
|
988 /*****************************************************************************
|
|
|
989 redisplay_clear_top_of_window
|
|
|
990
|
|
|
991 If window is topmost, clear the internal border above it.
|
|
|
992 ****************************************************************************/
|
|
|
993 static void
|
|
|
994 redisplay_clear_top_of_window (struct window *w)
|
|
|
995 {
|
|
|
996 Lisp_Object window;
|
|
|
997 XSETWINDOW (window, w);
|
|
|
998
|
|
|
999 if (!NILP (Fwindow_highest_p (window)))
|
|
|
1000 {
|
|
|
1001 struct frame *f = XFRAME (w->frame);
|
|
|
1002 struct device *d = XDEVICE (f->device);
|
|
|
1003 int x, y, width, height;
|
|
|
1004
|
|
|
1005 x = w->pixel_left;
|
|
|
1006 width = w->pixel_width;
|
|
|
1007
|
|
|
1008 if (window_is_leftmost (w))
|
|
|
1009 {
|
|
|
1010 x -= FRAME_BORDER_WIDTH (f);
|
|
|
1011 width += FRAME_BORDER_WIDTH (f);
|
|
|
1012 }
|
|
|
1013 if (window_is_rightmost (w))
|
|
|
1014 width += FRAME_BORDER_WIDTH (f);
|
|
185
|
1015
|
|
0
|
1016 y = FRAME_TOP_BORDER_START (f) - 1;
|
|
|
1017 height = FRAME_BORDER_HEIGHT (f) + 1;
|
|
|
1018
|
|
|
1019 DEVMETH (d, clear_region, (window, DEFAULT_INDEX, x, y, width, height));
|
|
|
1020 }
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 /*****************************************************************************
|
|
|
1024 redisplay_clear_bottom_of_window
|
|
|
1025
|
|
|
1026 Clear window from right below the last display line to right above
|
|
|
1027 the modeline. The calling function can limit the area actually
|
|
|
1028 erased by setting min_start and/or max_end to positive values.
|
|
|
1029 ****************************************************************************/
|
|
|
1030 void
|
|
|
1031 redisplay_clear_bottom_of_window (struct window *w, display_line_dynarr *ddla,
|
|
|
1032 int min_start, int max_end)
|
|
|
1033 {
|
|
|
1034 struct frame *f = XFRAME (w->frame);
|
|
|
1035 struct device *d = XDEVICE (f->device);
|
|
|
1036 int ypos1, ypos2;
|
|
|
1037 int ddla_len = Dynarr_length (ddla);
|
|
|
1038
|
|
|
1039 ypos2 = WINDOW_TEXT_BOTTOM (w);
|
|
|
1040 #ifdef HAVE_SCROLLBARS
|
|
|
1041 /* This adjustment is to catch the intersection of any scrollbars. */
|
|
282
|
1042 if (f->windows_structure_changed && NILP (w->scrollbar_on_top_p))
|
|
0
|
1043 ypos2 += window_scrollbar_height (w);
|
|
|
1044 #endif
|
|
|
1045
|
|
|
1046 if (ddla_len)
|
|
|
1047 {
|
|
|
1048 if (ddla_len == 1 && Dynarr_atp (ddla, 0)->modeline)
|
|
|
1049 {
|
|
|
1050 ypos1 = WINDOW_TEXT_TOP (w);
|
|
|
1051 #ifdef HAVE_SCROLLBARS
|
|
|
1052 /* This adjustment is to catch the intersection of any scrollbars. */
|
|
282
|
1053 if (f->windows_structure_changed && !NILP (w->scrollbar_on_top_p))
|
|
0
|
1054 ypos1 -= window_scrollbar_height (w);
|
|
|
1055 #endif
|
|
|
1056 }
|
|
|
1057 else
|
|
|
1058 {
|
|
|
1059 struct display_line *dl = Dynarr_atp (ddla, ddla_len - 1);
|
|
|
1060 ypos1 = dl->ypos + dl->descent - dl->clip;
|
|
|
1061 }
|
|
|
1062 }
|
|
|
1063 else
|
|
|
1064 ypos1 = WINDOW_TEXT_TOP (w);
|
|
|
1065
|
|
|
1066 /* #### See if this can be made conditional on the frame
|
|
|
1067 changing size. */
|
|
|
1068 if (MINI_WINDOW_P (w))
|
|
|
1069 ypos2 += FRAME_BORDER_HEIGHT (f);
|
|
|
1070
|
|
|
1071 if (min_start >= 0 && ypos1 < min_start)
|
|
|
1072 ypos1 = min_start;
|
|
|
1073 if (max_end >= 0 && ypos2 > max_end)
|
|
|
1074 ypos2 = max_end;
|
|
|
1075
|
|
|
1076 if (ypos2 <= ypos1)
|
|
|
1077 return;
|
|
|
1078
|
|
|
1079 DEVMETH (d, clear_to_window_end, (w, ypos1, ypos2));
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 /*****************************************************************************
|
|
|
1083 redisplay_update_line
|
|
|
1084
|
|
|
1085 This is used during incremental updates to update a single line and
|
|
|
1086 correct the offsets on all lines below it. At the moment
|
|
|
1087 update_values is false if we are only updating the modeline.
|
|
|
1088 ****************************************************************************/
|
|
|
1089 void
|
|
|
1090 redisplay_update_line (struct window *w, int first_line, int last_line,
|
|
|
1091 int update_values)
|
|
|
1092 {
|
|
|
1093 struct frame *f = XFRAME (w->frame);
|
|
|
1094 struct device *d = XDEVICE (f->device);
|
|
|
1095
|
|
|
1096 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP);
|
|
|
1097 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP);
|
|
|
1098
|
|
|
1099 DEVMETH (d, output_begin, (d));
|
|
|
1100
|
|
|
1101 while (first_line <= last_line)
|
|
|
1102 {
|
|
|
1103 Charcount old_len = (Dynarr_atp (cdla, first_line)->end_bufpos -
|
|
|
1104 Dynarr_atp (cdla, first_line)->bufpos);
|
|
|
1105 Charcount new_len = (Dynarr_atp (ddla, first_line)->end_bufpos -
|
|
|
1106 Dynarr_atp (ddla, first_line)->bufpos);
|
|
|
1107
|
|
|
1108 assert (Dynarr_length (cdla) == Dynarr_length (ddla));
|
|
|
1109
|
|
|
1110 /* Output the changes. */
|
|
|
1111 output_display_line (w, cdla, ddla, first_line, -1, -1);
|
|
|
1112
|
|
|
1113 /* Update the offsets. */
|
|
|
1114 if (update_values)
|
|
|
1115 {
|
|
|
1116 int cur_line = first_line + 1;
|
|
|
1117 while (cur_line < Dynarr_length (cdla))
|
|
|
1118 {
|
|
|
1119 Dynarr_atp (cdla, cur_line)->offset += (new_len - old_len);
|
|
|
1120 Dynarr_atp (ddla, cur_line)->offset += (new_len - old_len);
|
|
|
1121 cur_line++;
|
|
|
1122 }
|
|
|
1123 }
|
|
|
1124
|
|
|
1125 /* Update the window_end_pos and other settings. */
|
|
|
1126 if (update_values)
|
|
|
1127 {
|
|
|
1128 w->window_end_pos[CURRENT_DISP] -= (new_len - old_len);
|
|
|
1129
|
|
|
1130 if (Dynarr_atp (ddla, first_line)->cursor_elt != -1)
|
|
|
1131 {
|
|
|
1132 w->last_point_x[CURRENT_DISP] = w->last_point_x[DESIRED_DISP];
|
|
|
1133 w->last_point_y[CURRENT_DISP] = w->last_point_y[DESIRED_DISP];
|
|
|
1134 }
|
|
|
1135 }
|
|
|
1136
|
|
|
1137 first_line++;
|
|
|
1138 }
|
|
|
1139
|
|
|
1140 /* Update the window max line length. We have to scan the entire
|
|
|
1141 set of display lines otherwise we might not detect if the max is
|
|
|
1142 supposed to shrink. */
|
|
|
1143 if (update_values)
|
|
|
1144 {
|
|
|
1145 int line = 0;
|
|
|
1146
|
|
|
1147 w->max_line_len = 0;
|
|
|
1148 while (line < Dynarr_length (ddla))
|
|
|
1149 {
|
|
|
1150 struct display_line *dl = Dynarr_atp (ddla, line);
|
|
|
1151
|
|
|
1152 if (!dl->modeline)
|
|
|
1153 w->max_line_len = max (dl->num_chars, w->max_line_len);
|
|
|
1154
|
|
|
1155 line++;
|
|
|
1156 }
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 w->last_modified[CURRENT_DISP] = w->last_modified[DESIRED_DISP];
|
|
|
1160 w->last_facechange[CURRENT_DISP] = w->last_facechange[DESIRED_DISP];
|
|
|
1161 Fset_marker (w->last_point[CURRENT_DISP],
|
|
|
1162 Fmarker_position (w->last_point[DESIRED_DISP]), w->buffer);
|
|
|
1163 Fset_marker (w->last_start[CURRENT_DISP],
|
|
|
1164 Fmarker_position (w->last_start[DESIRED_DISP]), w->buffer);
|
|
|
1165
|
|
|
1166 /* We don't bother updating the vertical scrollbars here. This
|
|
|
1167 gives us a performance increase while having minimal loss of
|
|
|
1168 quality to the scrollbar slider size and position since when this
|
|
|
1169 function is called we know that the changes to the buffer were
|
|
|
1170 very localized. We have to update the horizontal scrollbars,
|
|
|
1171 though, because this routine could cause a change which has a
|
|
|
1172 larger impact on their sizing. */
|
|
|
1173 /* #### See if we can get away with only calling this if
|
|
|
1174 max_line_len is greater than the window_char_width. */
|
|
209
|
1175 #if defined(HAVE_SCROLLBARS) && defined(HAVE_X_WINDOWS)
|
|
82
|
1176 {
|
|
|
1177 extern int stupid_vertical_scrollbar_drag_hack;
|
|
|
1178
|
|
|
1179 update_window_scrollbars (w, NULL, 1, stupid_vertical_scrollbar_drag_hack);
|
|
|
1180 stupid_vertical_scrollbar_drag_hack = 1;
|
|
|
1181 }
|
|
0
|
1182 #endif
|
|
|
1183
|
|
|
1184 /* This has to be done after we've updated the values. We don't
|
|
|
1185 call output_end for tty frames. Redisplay will do this after all
|
|
|
1186 tty windows have been updated. This cuts down on cursor
|
|
|
1187 flicker. */
|
|
|
1188 if (FRAME_TTY_P (f))
|
|
|
1189 redisplay_redraw_cursor (f, 0);
|
|
|
1190 else
|
|
|
1191 DEVMETH (d, output_end, (d));
|
|
|
1192 }
|
|
|
1193
|
|
|
1194 /*****************************************************************************
|
|
|
1195 redisplay_output_window
|
|
|
1196
|
|
|
1197 For the given window W, ensure that the current display lines are
|
|
|
1198 equal to the desired display lines, outputing changes as necessary.
|
|
|
1199
|
|
|
1200 #### Fuck me. This just isn't going to cut it for tty's. The output
|
|
|
1201 decisions for them must be based on the contents of the entire frame
|
|
|
1202 because that is how the available output capabilities think. The
|
|
|
1203 solution is relatively simple. Create redisplay_output_frame. This
|
|
|
1204 will basically merge all of the separate window display structs into
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1205 a single one for the frame. This combination structure will be able
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1206 to be passed to the same output_display_line which works for windows
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1207 on X frames and the right things will happen. It just takes time to
|
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1208 do.
|
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|
1209 ****************************************************************************/
|
|
|
1210 void
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1211 redisplay_output_window (struct window *w)
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1212 {
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|
1213 struct frame *f = XFRAME (w->frame);
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1214 struct device *d = XDEVICE (f->device);
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1215
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1216 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP);
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1217 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP);
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1218
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1219 int cdla_len = Dynarr_length (cdla);
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1220 int ddla_len = Dynarr_length (ddla);
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1221
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1222 int line;
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1223 int need_to_clear_bottom = 0;
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1224 int need_to_clear_start = -1;
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1225 int need_to_clear_end = -1;
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1226
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1227 /* Backgrounds may have changed or windows may have gone away
|
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1228 leaving dividers lying around. */
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1229 if (f->faces_changed
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1230 || f->windows_structure_changed
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1231 || w->shadow_thickness_changed)
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1232 need_to_clear_bottom = 1;
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1233
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1234 /* The first thing we do is determine if we are going to need to
|
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1235 clear the bottom of the window. We only need to do this if the
|
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1236 bottom of the current display lines is below the bottom of the
|
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|
1237 desired display lines. Note that the number of lines is
|
|
|
1238 irrelevant. Only the position matters. We also clear to the
|
|
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1239 bottom of the window if the modeline has shifted position. */
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1240 /* #### We can't blindly not clear the bottom if f->clear is true
|
|
|
1241 since there might be a window-local background. However, for
|
|
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1242 those cases where there isn't, clearing the end of the window in
|
|
|
1243 this case sucks. */
|
|
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1244 if (!need_to_clear_bottom)
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|
|
1245 {
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|
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1246 struct display_line *cdl, *ddl;
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1247
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1248 /* If the modeline has changed position or size, clear the bottom
|
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1249 of the window. */
|
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1250 if (!need_to_clear_bottom)
|
|
|
1251 {
|
|
|
1252 cdl = ddl = 0;
|
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|
1253
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|
|
1254 if (cdla_len)
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|
|
1255 cdl = Dynarr_atp (cdla, 0);
|
|
|
1256 if (ddla_len)
|
|
|
1257 ddl = Dynarr_atp (ddla, 0);
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|
|
1258
|
|
|
1259 if (!cdl || !ddl)
|
|
|
1260 need_to_clear_bottom = 1;
|
|
|
1261 else if ((!cdl->modeline && ddl->modeline)
|
|
|
1262 || (cdl->modeline && !ddl->modeline))
|
|
|
1263 need_to_clear_bottom = 1;
|
|
|
1264 else if (cdl->ypos != ddl->ypos ||
|
|
|
1265 cdl->ascent != ddl->ascent ||
|
|
|
1266 cdl->descent != ddl->descent ||
|
|
|
1267 cdl->clip != ddl->clip)
|
|
|
1268 need_to_clear_bottom = 1;
|
|
|
1269
|
|
|
1270 /* #### This kludge is to make sure the modeline shadows get
|
|
|
1271 redrawn if the modeline position shifts. */
|
|
|
1272 if (need_to_clear_bottom)
|
|
|
1273 w->shadow_thickness_changed = 1;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 if (!need_to_clear_bottom)
|
|
|
1277 {
|
|
|
1278 cdl = ddl = 0;
|
|
|
1279
|
|
|
1280 if (cdla_len)
|
|
|
1281 cdl = Dynarr_atp (cdla, cdla_len - 1);
|
|
|
1282 if (ddla_len)
|
|
|
1283 ddl = Dynarr_atp (ddla, ddla_len - 1);
|
|
|
1284
|
|
|
1285 if (!cdl || !ddl)
|
|
|
1286 need_to_clear_bottom = 1;
|
|
|
1287 else
|
|
|
1288 {
|
|
|
1289 int cdl_bottom, ddl_bottom;
|
|
|
1290
|
|
|
1291 cdl_bottom = cdl->ypos + cdl->descent;
|
|
|
1292 ddl_bottom = ddl->ypos + ddl->descent;
|
|
|
1293
|
|
|
1294 if (cdl_bottom > ddl_bottom)
|
|
|
1295 {
|
|
|
1296 need_to_clear_bottom = 1;
|
|
|
1297 need_to_clear_start = ddl_bottom;
|
|
|
1298 need_to_clear_end = cdl_bottom;
|
|
|
1299 }
|
|
|
1300 }
|
|
|
1301 }
|
|
|
1302 }
|
|
|
1303
|
|
|
1304 /* Perform any output initialization. */
|
|
|
1305 DEVMETH (d, output_begin, (d));
|
|
|
1306
|
|
|
1307 /* If the window's structure has changed clear the internal border
|
|
|
1308 above it if it is topmost (the function will check). */
|
|
|
1309 if (f->windows_structure_changed)
|
|
|
1310 redisplay_clear_top_of_window (w);
|
|
|
1311
|
|
|
1312 /* Output each line. */
|
|
|
1313 for (line = 0; line < Dynarr_length (ddla); line++)
|
|
|
1314 {
|
|
|
1315 output_display_line (w, cdla, ddla, line, -1, -1);
|
|
|
1316 }
|
|
|
1317
|
|
|
1318 /* If the number of display lines has shrunk, adjust. */
|
|
|
1319 if (cdla_len > ddla_len)
|
|
|
1320 {
|
|
|
1321 Dynarr_length (cdla) = ddla_len;
|
|
|
1322 }
|
|
|
1323
|
|
|
1324 /* Output a vertical divider between windows, if necessary. */
|
|
|
1325 if (window_needs_vertical_divider (w)
|
|
|
1326 && (f->windows_structure_changed || f->clear))
|
|
|
1327 {
|
|
|
1328 DEVMETH (d, output_vertical_divider, (w, f->windows_structure_changed));
|
|
|
1329 }
|
|
|
1330
|
|
|
1331 /* Clear the rest of the window, if necessary. */
|
|
|
1332 if (need_to_clear_bottom)
|
|
|
1333 {
|
|
|
1334 redisplay_clear_bottom_of_window (w, ddla, need_to_clear_start,
|
|
|
1335 need_to_clear_end);
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 w->window_end_pos[CURRENT_DISP] = w->window_end_pos[DESIRED_DISP];
|
|
|
1339 Fset_marker (w->start[CURRENT_DISP],
|
|
|
1340 make_int (marker_position (w->start[DESIRED_DISP])),
|
|
|
1341 w->buffer);
|
|
|
1342 Fset_marker (w->pointm[CURRENT_DISP],
|
|
|
1343 make_int (marker_position (w->pointm[DESIRED_DISP])),
|
|
|
1344 w->buffer);
|
|
|
1345 w->last_modified[CURRENT_DISP] = w->last_modified[DESIRED_DISP];
|
|
|
1346 w->last_facechange[CURRENT_DISP] = w->last_facechange[DESIRED_DISP];
|
|
|
1347 Fset_marker (w->last_start[CURRENT_DISP],
|
|
|
1348 Fmarker_position (w->last_start[DESIRED_DISP]), w->buffer);
|
|
|
1349 Fset_marker (w->last_point[CURRENT_DISP],
|
|
|
1350 Fmarker_position (w->last_point[DESIRED_DISP]), w->buffer);
|
|
|
1351 w->last_point_x[CURRENT_DISP] = w->last_point_x[DESIRED_DISP];
|
|
|
1352 w->last_point_y[CURRENT_DISP] = w->last_point_y[DESIRED_DISP];
|
|
|
1353 w->shadow_thickness_changed = 0;
|
|
|
1354
|
|
|
1355 set_window_display_buffer (w, XBUFFER (w->buffer));
|
|
|
1356 find_window_mirror (w)->truncate_win = window_truncation_on (w);
|
|
|
1357
|
|
|
1358 /* Overkill on invalidating the cache. It is very bad for it to not
|
|
|
1359 get invalidated when it should be. */
|
|
|
1360 INVALIDATE_DEVICE_PIXEL_TO_GLYPH_CACHE (d);
|
|
|
1361
|
|
|
1362 /* We don't call output_end for tty frames. Redisplay will do this
|
|
|
1363 after all tty windows have been updated. This cuts down on
|
|
|
1364 cursor flicker. */
|
|
|
1365 if (FRAME_TTY_P (f))
|
|
|
1366 redisplay_redraw_cursor (f, 0);
|
|
|
1367 else
|
|
|
1368 DEVMETH (d, output_end, (d));
|
|
|
1369
|
|
|
1370 #ifdef HAVE_SCROLLBARS
|
|
|
1371 update_window_scrollbars (w, NULL, !MINI_WINDOW_P (w), 0);
|
|
|
1372 #endif
|
|
|
1373 }
|
