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428
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1 /* X-specific Lisp objects.
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2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Board of Trustees, University of Illinois.
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4 Copyright (C) 1995 Tinker Systems.
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5 Copyright (C) 1995, 1996 Ben Wing.
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6 Copyright (C) 1995 Sun Microsystems, Inc.
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7
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8 This file is part of XEmacs.
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9
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10 XEmacs is free software; you can redistribute it and/or modify it
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11 under the terms of the GNU General Public License as published by the
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12 Free Software Foundation; either version 2, or (at your option) any
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13 later version.
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14
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15 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with XEmacs; see the file COPYING. If not, write to
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22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA. */
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24
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25 /* Synched up with: Not in FSF. */
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26
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27 /* Authors: Jamie Zawinski, Chuck Thompson, Ben Wing */
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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 #include <limits.h>
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32
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33 #include "console-x.h"
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34 #include "objects-x.h"
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35
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36 #include "buffer.h"
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37 #include "device.h"
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38 #include "insdel.h"
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39
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40 int x_handle_non_fully_specified_fonts;
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41
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42
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43 /************************************************************************/
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44 /* color instances */
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45 /************************************************************************/
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46
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47 /* Replacement for XAllocColor() that tries to return the nearest
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48 available color if the colormap is full. Original was from FSFmacs,
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49 but rewritten by Jareth Hein <jareth@camelot-soft.com> 97/11/25
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50 Modified by Lee Kindness <lkindness@csl.co.uk> 31/08/99 to handle previous
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51 total failure which was due to a read/write colorcell being the nearest
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52 match - tries the next nearest...
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53
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54 Return value is 1 for normal success, 2 for nearest color success,
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55 3 for Non-deallocable sucess. */
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56 int
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57 allocate_nearest_color (Display *display, Colormap colormap, Visual *visual,
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58 XColor *color_def)
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59 {
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60 int status;
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61
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62 if (visual->class == DirectColor || visual->class == TrueColor)
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63 {
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64 if (XAllocColor (display, colormap, color_def) != 0)
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65 {
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66 status = 1;
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67 }
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68 else
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69 {
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70 /* We're dealing with a TrueColor/DirectColor visual, so play games
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71 with the RGB values in the XColor struct. */
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72 /* ### JH: I'm not sure how a call to XAllocColor can fail in a
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73 TrueColor or DirectColor visual, so I will just reformat the
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74 request to match the requirements of the visual, and re-issue
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75 the request. If this fails for anybody, I wanna know about it
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76 so I can come up with a better plan */
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77
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78 unsigned long rshift,gshift,bshift,rbits,gbits,bbits,junk;
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79 junk = visual->red_mask;
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80 rshift = 0;
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81 while ((junk & 0x1) == 0) {
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82 junk = junk >> 1;
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83 rshift ++;
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84 }
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85 rbits = 0;
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86 while (junk != 0) {
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87 junk = junk >> 1;
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88 rbits++;
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89 }
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90 junk = visual->green_mask;
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91 gshift = 0;
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92 while ((junk & 0x1) == 0) {
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93 junk = junk >> 1;
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94 gshift ++;
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95 }
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96 gbits = 0;
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97 while (junk != 0) {
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98 junk = junk >> 1;
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99 gbits++;
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100 }
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101 junk = visual->blue_mask;
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102 bshift = 0;
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103 while ((junk & 0x1) == 0) {
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104 junk = junk >> 1;
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105 bshift ++;
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106 }
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107 bbits = 0;
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108 while (junk != 0) {
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109 junk = junk >> 1;
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110 bbits++;
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111 }
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112
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113 color_def->red = color_def->red >> (16 - rbits);
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114 color_def->green = color_def->green >> (16 - gbits);
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115 color_def->blue = color_def->blue >> (16 - bbits);
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116 if (XAllocColor (display, colormap, color_def) != 0)
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117 status = 1;
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118 else
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119 {
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120 int rd, gr, bl;
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121 /* ### JH: I'm punting here, knowing that doing this will at
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122 least draw the color correctly. However, unless we convert
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123 all of the functions that allocate colors (graphics
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124 libraries, etc) to use this function doing this is very
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125 likely to cause problems later... */
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126
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127 if (rbits > 8)
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128 rd = color_def->red << (rbits - 8);
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129 else
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130 rd = color_def->red >> (8 - rbits);
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131 if (gbits > 8)
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132 gr = color_def->green << (gbits - 8);
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133 else
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134 gr = color_def->green >> (8 - gbits);
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135 if (bbits > 8)
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136 bl = color_def->blue << (bbits - 8);
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137 else
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138 bl = color_def->blue >> (8 - bbits);
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139 color_def->pixel = (rd << rshift) | (gr << gshift) | (bl << bshift);
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140 status = 3;
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141 }
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142 }
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143 }
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144 else
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145 {
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146 XColor *cells = NULL;
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147 /* JH: I can't believe there's no way to go backwards from a
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148 colormap ID and get its visual and number of entries, but X
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149 apparently isn't built that way... */
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150 int no_cells = visual->map_entries;
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151 status = 0;
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152
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153 if (XAllocColor (display, colormap, color_def) != 0)
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154 status = 1;
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155 else while( status != 2 )
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156 {
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157 /* If we got to this point, the colormap is full, so we're
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158 going to try and get the next closest color. The algorithm used
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159 is a least-squares matching, which is what X uses for closest
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160 color matching with StaticColor visuals. */
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161 int nearest;
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162 long nearest_delta, trial_delta;
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163 int x;
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164
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165 if( cells == NULL )
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166 {
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167 cells = alloca_array (XColor, no_cells);
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168 for (x = 0; x < no_cells; x++)
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169 cells[x].pixel = x;
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170
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171 /* read the current colormap */
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172 XQueryColors (display, colormap, cells, no_cells);
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173 }
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174
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175 nearest = 0;
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176 /* I'm assuming CSE so I'm not going to condense this. */
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177 nearest_delta = ((((color_def->red >> 8) - (cells[0].red >> 8))
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178 * ((color_def->red >> 8) - (cells[0].red >> 8)))
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179 +
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180 (((color_def->green >> 8) - (cells[0].green >> 8))
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181 * ((color_def->green >> 8) - (cells[0].green >> 8)))
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182 +
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183 (((color_def->blue >> 8) - (cells[0].blue >> 8))
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184 * ((color_def->blue >> 8) - (cells[0].blue >> 8))));
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185 for (x = 1; x < no_cells; x++)
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186 {
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187 trial_delta = ((((color_def->red >> 8) - (cells[x].red >> 8))
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188 * ((color_def->red >> 8) - (cells[x].red >> 8)))
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189 +
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190 (((color_def->green >> 8) - (cells[x].green >> 8))
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191 * ((color_def->green >> 8) - (cells[x].green >> 8)))
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192 +
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193 (((color_def->blue >> 8) - (cells[x].blue >> 8))
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194 * ((color_def->blue >> 8) - (cells[x].blue >> 8))));
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195
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196 /* less? Ignore cells marked as previously failing */
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197 if( (trial_delta < nearest_delta) &&
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198 (cells[x].pixel != ULONG_MAX) )
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199 {
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200 nearest = x;
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201 nearest_delta = trial_delta;
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202 }
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203 }
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204 color_def->red = cells[nearest].red;
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205 color_def->green = cells[nearest].green;
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206 color_def->blue = cells[nearest].blue;
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207 if (XAllocColor (display, colormap, color_def) != 0)
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208 status = 2;
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209 else
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210 /* LSK: Either the colour map has changed since
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211 * we read it, or the colour is allocated
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212 * read/write... Mark this cmap entry so it's
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213 * ignored in the next iteration.
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214 */
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215 cells[nearest].pixel = ULONG_MAX;
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216 }
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217 }
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218 return status;
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219 }
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220
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221 int
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222 x_parse_nearest_color (struct device *d, XColor *color, Bufbyte *name,
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223 Bytecount len, Error_behavior errb)
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224 {
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225 Display *dpy = DEVICE_X_DISPLAY (d);
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226 Colormap cmap = DEVICE_X_COLORMAP (d);
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227 Visual *visual = DEVICE_X_VISUAL (d);
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228 int result;
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229
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230 xzero (*color);
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231 {
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232 CONST Extbyte *extname;
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233 Extcount extnamelen;
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234
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235 GET_CHARPTR_EXT_BINARY_DATA_ALLOCA (name, len, extname, extnamelen);
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236 result = XParseColor (dpy, cmap, (char *) extname, color);
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237 }
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238 if (!result)
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239 {
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240 maybe_signal_simple_error ("Unrecognized color", make_string (name, len),
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241 Qcolor, errb);
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242 return 0;
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243 }
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244 result = allocate_nearest_color (dpy, cmap, visual, color);
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245 if (!result)
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246 {
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247 maybe_signal_simple_error ("Couldn't allocate color",
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248 make_string (name, len), Qcolor, errb);
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249 return 0;
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250 }
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251
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252 return result;
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253 }
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254
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255 static int
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256 x_initialize_color_instance (struct Lisp_Color_Instance *c, Lisp_Object name,
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257 Lisp_Object device, Error_behavior errb)
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258 {
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259 XColor color;
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260 int result;
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261
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262 result = x_parse_nearest_color (XDEVICE (device), &color,
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263 XSTRING_DATA (name),
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264 XSTRING_LENGTH (name),
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265 errb);
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266
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267 if (!result)
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268 return 0;
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269
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270 /* Don't allocate the data until we're sure that we will succeed,
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271 or the finalize method may get fucked. */
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272 c->data = xnew (struct x_color_instance_data);
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273 if (result == 3)
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274 COLOR_INSTANCE_X_DEALLOC (c) = 0;
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275 else
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276 COLOR_INSTANCE_X_DEALLOC (c) = 1;
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277 COLOR_INSTANCE_X_COLOR (c) = color;
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278 return 1;
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279 }
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280
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281 static void
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282 x_print_color_instance (struct Lisp_Color_Instance *c,
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283 Lisp_Object printcharfun,
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284 int escapeflag)
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285 {
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286 char buf[100];
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287 XColor color = COLOR_INSTANCE_X_COLOR (c);
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288 sprintf (buf, " %ld=(%X,%X,%X)",
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289 color.pixel, color.red, color.green, color.blue);
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290 write_c_string (buf, printcharfun);
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291 }
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292
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293 static void
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294 x_finalize_color_instance (struct Lisp_Color_Instance *c)
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295 {
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296 if (c->data)
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297 {
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298 if (DEVICE_LIVE_P (XDEVICE (c->device)))
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299 {
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300 if (COLOR_INSTANCE_X_DEALLOC (c))
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301 {
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302 XFreeColors (DEVICE_X_DISPLAY (XDEVICE (c->device)), DEVICE_X_COLORMAP (XDEVICE (c->device)),
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303 &COLOR_INSTANCE_X_COLOR (c).pixel, 1, 0);
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304 }
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305 }
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306 xfree (c->data);
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307 c->data = 0;
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308 }
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309 }
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310
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311 /* Color instances are equal if they resolve to the same color on the
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312 screen (have the same RGB values). I imagine that
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313 "same RGB values" == "same cell in the colormap." Arguably we should
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314 be comparing their names or pixel values instead. */
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315
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316 static int
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317 x_color_instance_equal (struct Lisp_Color_Instance *c1,
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318 struct Lisp_Color_Instance *c2,
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319 int depth)
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320 {
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321 XColor color1 = COLOR_INSTANCE_X_COLOR (c1);
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322 XColor color2 = COLOR_INSTANCE_X_COLOR (c2);
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323 return ((color1.red == color2.red) &&
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324 (color1.green == color2.green) &&
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325 (color1.blue == color2.blue));
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326 }
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327
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328 static unsigned long
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329 x_color_instance_hash (struct Lisp_Color_Instance *c, int depth)
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330 {
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331 XColor color = COLOR_INSTANCE_X_COLOR (c);
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332 return HASH3 (color.red, color.green, color.blue);
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333 }
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334
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335 static Lisp_Object
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336 x_color_instance_rgb_components (struct Lisp_Color_Instance *c)
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337 {
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338 XColor color = COLOR_INSTANCE_X_COLOR (c);
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339 return (list3 (make_int (color.red),
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340 make_int (color.green),
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341 make_int (color.blue)));
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342 }
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343
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344 static int
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345 x_valid_color_name_p (struct device *d, Lisp_Object color)
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346 {
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347 XColor c;
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348 Display *dpy = DEVICE_X_DISPLAY (d);
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349 Colormap cmap = DEVICE_X_COLORMAP (d);
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350
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351 CONST char *extname;
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352
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353 GET_C_STRING_CTEXT_DATA_ALLOCA (color, extname);
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354
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355 return XParseColor (dpy, cmap,
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356 extname, &c);
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357 }
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358
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359
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360 /************************************************************************/
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361 /* font instances */
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362 /************************************************************************/
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363
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364 static int
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365 x_initialize_font_instance (struct Lisp_Font_Instance *f, Lisp_Object name,
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366 Lisp_Object device, Error_behavior errb)
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367 {
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368 Display *dpy;
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369 XFontStruct *xf;
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370 CONST char *extname;
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371
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372 dpy = DEVICE_X_DISPLAY (XDEVICE (device));
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373 GET_C_STRING_CTEXT_DATA_ALLOCA (f->name, extname);
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374 xf = XLoadQueryFont (dpy, extname);
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375
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376 if (!xf)
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377 {
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378 maybe_signal_simple_error ("Couldn't load font", f->name,
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379 Qfont, errb);
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380 return 0;
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381 }
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382
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383 if (!xf->max_bounds.width)
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384 {
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385 /* yes, this has been known to happen. */
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386 XFreeFont (dpy, xf);
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387 maybe_signal_simple_error ("X font is too small", f->name,
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388 Qfont, errb);
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389 return 0;
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390 }
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391
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392 /* Don't allocate the data until we're sure that we will succeed,
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393 or the finalize method may get fucked. */
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394 f->data = xnew (struct x_font_instance_data);
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395 FONT_INSTANCE_X_TRUENAME (f) = Qnil;
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396 FONT_INSTANCE_X_FONT (f) = xf;
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397 f->ascent = xf->ascent;
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398 f->descent = xf->descent;
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399 f->height = xf->ascent + xf->descent;
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400 {
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401 /* following change suggested by Ted Phelps <phelps@dstc.edu.au> */
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402 unsigned int def_char = 'n'; /*xf->default_char;*/
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403 unsigned int byte1, byte2;
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404
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405 once_more:
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406 byte1 = def_char >> 8;
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407 byte2 = def_char & 0xFF;
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408
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409 if (xf->per_char)
|
|
|
410 {
|
|
|
411 /* Old versions of the R5 font server have garbage (>63k) as
|
|
|
412 def_char. 'n' might not be a valid character. */
|
|
|
413 if (byte1 < xf->min_byte1 ||
|
|
|
414 byte1 > xf->max_byte1 ||
|
|
|
415 byte2 < xf->min_char_or_byte2 ||
|
|
|
416 byte2 > xf->max_char_or_byte2)
|
|
|
417 f->width = 0;
|
|
|
418 else
|
|
|
419 f->width = xf->per_char[(byte1 - xf->min_byte1) *
|
|
|
420 (xf->max_char_or_byte2 -
|
|
|
421 xf->min_char_or_byte2 + 1) +
|
|
|
422 (byte2 - xf->min_char_or_byte2)].width;
|
|
|
423 }
|
|
|
424 else
|
|
|
425 f->width = xf->max_bounds.width;
|
|
|
426
|
|
|
427 /* Some fonts have a default char whose width is 0. This is no good.
|
|
|
428 If that's the case, first try 'n' as the default char, and if n has
|
|
|
429 0 width too (unlikely) then just use the max width. */
|
|
|
430 if (f->width == 0)
|
|
|
431 {
|
|
|
432 if (def_char == xf->default_char)
|
|
|
433 f->width = xf->max_bounds.width;
|
|
|
434 else
|
|
|
435 {
|
|
|
436 def_char = xf->default_char;
|
|
|
437 goto once_more;
|
|
|
438 }
|
|
|
439 }
|
|
|
440 }
|
|
|
441 /* If all characters don't exist then there could potentially be
|
|
|
442 0-width characters lurking out there. Not setting this flag
|
|
|
443 trips an optimization that would make them appear to have width
|
|
|
444 to redisplay. This is bad. So we set it if not all characters
|
|
|
445 have the same width or if not all characters are defined.
|
|
|
446 */
|
|
|
447 /* #### This sucks. There is a measurable performance increase
|
|
|
448 when using proportional width fonts if this flag is not set.
|
|
|
449 Unfortunately so many of the fucking X fonts are not fully
|
|
|
450 defined that we could almost just get rid of this damn flag and
|
|
|
451 make it an assertion. */
|
|
|
452 f->proportional_p = (xf->min_bounds.width != xf->max_bounds.width ||
|
|
|
453 (x_handle_non_fully_specified_fonts &&
|
|
|
454 !xf->all_chars_exist));
|
|
|
455
|
|
|
456 return 1;
|
|
|
457 }
|
|
|
458
|
|
|
459 static void
|
|
|
460 x_mark_font_instance (struct Lisp_Font_Instance *f)
|
|
|
461 {
|
|
|
462 mark_object (FONT_INSTANCE_X_TRUENAME (f));
|
|
|
463 }
|
|
|
464
|
|
|
465 static void
|
|
|
466 x_print_font_instance (struct Lisp_Font_Instance *f,
|
|
|
467 Lisp_Object printcharfun,
|
|
|
468 int escapeflag)
|
|
|
469 {
|
|
|
470 char buf[200];
|
|
|
471 sprintf (buf, " 0x%lx", (unsigned long) FONT_INSTANCE_X_FONT (f)->fid);
|
|
|
472 write_c_string (buf, printcharfun);
|
|
|
473 }
|
|
|
474
|
|
|
475 static void
|
|
|
476 x_finalize_font_instance (struct Lisp_Font_Instance *f)
|
|
|
477 {
|
|
|
478
|
|
|
479 if (f->data)
|
|
|
480 {
|
|
|
481 if (DEVICE_LIVE_P (XDEVICE (f->device)))
|
|
|
482 {
|
|
|
483 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (f->device));
|
|
|
484
|
|
|
485 XFreeFont (dpy, FONT_INSTANCE_X_FONT (f));
|
|
|
486 }
|
|
|
487 xfree (f->data);
|
|
|
488 f->data = 0;
|
|
|
489 }
|
|
|
490 }
|
|
|
491
|
|
|
492 /* Determining the truename of a font is hard. (Big surprise.)
|
|
|
493
|
|
|
494 By "truename" we mean an XLFD-form name which contains no wildcards, yet
|
|
|
495 which resolves to *exactly* the same font as the one which we already have
|
|
|
496 the (probably wildcarded) name and `XFontStruct' of.
|
|
|
497
|
|
|
498 One might think that the first font returned by XListFonts would be the one
|
|
|
499 that XOpenFont would pick. Apparently this is the case on some servers,
|
|
|
500 but not on others. It would seem not to be specified.
|
|
|
501
|
|
|
502 The MIT R5 server sometimes appears to be picking the lexicographically
|
|
|
503 smallest font which matches the name (thus picking "adobe" fonts before
|
|
|
504 "bitstream" fonts even if the bitstream fonts are earlier in the path, and
|
|
|
505 also picking 100dpi adobe fonts over 75dpi adobe fonts even though the
|
|
|
506 75dpi are in the path earlier) but sometimes appears to be doing something
|
|
|
507 else entirely (for example, removing the bitsream fonts from the path will
|
|
|
508 cause the 75dpi adobe fonts to be used instead of the 100dpi, even though
|
|
|
509 their relative positions in the path (and their names!) have not changed).
|
|
|
510
|
|
|
511 The documentation for XSetFontPath() seems to indicate that the order of
|
|
|
512 entries in the font path means something, but it's pretty noncommital about
|
|
|
513 it, and the spirit of the law is apparently not being obeyed...
|
|
|
514
|
|
|
515 All the fonts I've seen have a property named `FONT' which contains the
|
|
|
516 truename of the font. However, there are two problems with using this: the
|
|
|
517 first is that the X Protocol Document is quite explicit that all properties
|
|
|
518 are optional, so we can't depend on it being there. The second is that
|
|
|
519 it's conceivable that this alleged truename isn't actually accessible as a
|
|
|
520 font, due to some difference of opinion between the font designers and
|
|
|
521 whoever installed the font on the system.
|
|
|
522
|
|
|
523 So, our first attempt is to look for a FONT property, and then verify that
|
|
|
524 the name there is a valid name by running XListFonts on it. There's still
|
|
|
525 the potential that this could be true but we could still be being lied to,
|
|
|
526 but that seems pretty remote.
|
|
|
527
|
|
|
528 Late breaking news: I've gotten reports that SunOS 4.1.3U1
|
|
|
529 with OpenWound 3.0 has a font whose truename is really
|
|
|
530 "-Adobe-Courier-Medium-R-Normal--12-120-75-75-M-70-ISO8859-1"
|
|
|
531 but whose FONT property contains "Courier".
|
|
|
532
|
|
|
533 So we disbelieve the FONT property unless it begins with a dash and
|
|
|
534 is more than 30 characters long. X Windows: The defacto substandard.
|
|
|
535 X Windows: Complex nonsolutions to simple nonproblems. X Windows:
|
|
|
536 Live the nightmare.
|
|
|
537
|
|
|
538 If the FONT property doesn't exist, then we try and construct an XLFD name
|
|
|
539 out of the other font properties (FOUNDRY, FAMILY_NAME, WEIGHT_NAME, etc).
|
|
|
540 This is necessary at least for some versions of OpenWound. But who knows
|
|
|
541 what the future will bring.
|
|
|
542
|
|
|
543 If that doesn't work, then we use XListFonts and either take the first font
|
|
|
544 (which I think is the most sensible thing) or we find the lexicographically
|
|
|
545 least, depending on whether the preprocessor constant `XOPENFONT_SORTS' is
|
|
|
546 defined. This sucks because the two behaviors are a property of the server
|
|
|
547 being used, not the architecture on which emacs has been compiled. Also,
|
|
|
548 as I described above, sorting isn't ALWAYS what the server does. Really it
|
|
|
549 does something seemingly random. There is no reliable way to win if the
|
|
|
550 FONT property isn't present.
|
|
|
551
|
|
|
552 Another possibility which I haven't bothered to implement would be to map
|
|
|
553 over all of the matching fonts and find the first one that has the same
|
|
|
554 character metrics as the font we already have loaded. Even if this didn't
|
|
|
555 return exactly the same font, it would at least return one whose characters
|
|
|
556 were the same sizes, which would probably be good enough.
|
|
|
557
|
|
|
558 More late-breaking news: on RS/6000 AIX 3.2.4, the expression
|
|
|
559 XLoadQueryFont (dpy, "-*-Fixed-Medium-R-*-*-*-130-75-75-*-*-ISO8859-1")
|
|
|
560 actually returns the font
|
|
|
561 -Misc-Fixed-Medium-R-Normal--13-120-75-75-C-80-ISO8859-1
|
|
|
562 which is crazy, because that font doesn't even match that pattern! It is
|
|
|
563 also not included in the output produced by `xlsfonts' with that pattern.
|
|
|
564
|
|
|
565 So this is yet another example of XListFonts() and XOpenFont() using
|
|
|
566 completely different algorithms. This, however, is a goofier example of
|
|
|
567 this bug, because in this case, it's not just the search order that is
|
|
|
568 different -- the sets don't even intersect.
|
|
|
569
|
|
|
570 If anyone has any better ideas how to do this, or any insights on what it is
|
|
|
571 that the various servers are actually doing, please let me know! -- jwz. */
|
|
|
572
|
|
|
573 static int
|
|
|
574 valid_x_font_name_p (Display *dpy, char *name)
|
|
|
575 {
|
|
|
576 /* Maybe this should be implemented by calling XLoadFont and trapping
|
|
|
577 the error. That would be a lot of work, and wasteful as hell, but
|
|
|
578 might be more correct.
|
|
|
579 */
|
|
|
580 int nnames = 0;
|
|
|
581 char **names = 0;
|
|
|
582 if (! name)
|
|
|
583 return 0;
|
|
|
584 names = XListFonts (dpy, name, 1, &nnames);
|
|
|
585 if (names)
|
|
|
586 XFreeFontNames (names);
|
|
|
587 return (nnames != 0);
|
|
|
588 }
|
|
|
589
|
|
|
590 static char *
|
|
|
591 truename_via_FONT_prop (Display *dpy, XFontStruct *font)
|
|
|
592 {
|
|
|
593 unsigned long value = 0;
|
|
|
594 char *result = 0;
|
|
|
595 if (XGetFontProperty (font, XA_FONT, &value))
|
|
|
596 result = XGetAtomName (dpy, value);
|
|
|
597 /* result is now 0, or the string value of the FONT property. */
|
|
|
598 if (result)
|
|
|
599 {
|
|
|
600 /* Verify that result is an XLFD name (roughly...) */
|
|
|
601 if (result [0] != '-' || strlen (result) < (unsigned int) 30)
|
|
|
602 {
|
|
|
603 XFree (result);
|
|
|
604 result = 0;
|
|
|
605 }
|
|
|
606 }
|
|
|
607 return result; /* this must be freed by caller if non-0 */
|
|
|
608 }
|
|
|
609
|
|
|
610 static char *
|
|
|
611 truename_via_random_props (Display *dpy, XFontStruct *font)
|
|
|
612 {
|
|
|
613 struct device *d = get_device_from_display (dpy);
|
|
|
614 unsigned long value = 0;
|
|
|
615 char *foundry, *family, *weight, *slant, *setwidth, *add_style;
|
|
|
616 unsigned long pixel, point, res_x, res_y;
|
|
|
617 char *spacing;
|
|
|
618 unsigned long avg_width;
|
|
|
619 char *registry, *encoding;
|
|
|
620 char composed_name [2048];
|
|
|
621 int ok = 0;
|
|
|
622 char *result;
|
|
|
623
|
|
|
624 #define get_string(atom,var) \
|
|
|
625 if (XGetFontProperty (font, (atom), &value)) \
|
|
|
626 var = XGetAtomName (dpy, value); \
|
|
|
627 else { \
|
|
|
628 var = 0; \
|
|
|
629 goto FAIL; }
|
|
|
630 #define get_number(atom,var) \
|
|
|
631 if (!XGetFontProperty (font, (atom), &var) || \
|
|
|
632 var > 999) \
|
|
|
633 goto FAIL;
|
|
|
634
|
|
|
635 foundry = family = weight = slant = setwidth = 0;
|
|
|
636 add_style = spacing = registry = encoding = 0;
|
|
|
637
|
|
|
638 get_string (DEVICE_XATOM_FOUNDRY (d), foundry);
|
|
|
639 get_string (DEVICE_XATOM_FAMILY_NAME (d), family);
|
|
|
640 get_string (DEVICE_XATOM_WEIGHT_NAME (d), weight);
|
|
|
641 get_string (DEVICE_XATOM_SLANT (d), slant);
|
|
|
642 get_string (DEVICE_XATOM_SETWIDTH_NAME (d), setwidth);
|
|
|
643 get_string (DEVICE_XATOM_ADD_STYLE_NAME (d), add_style);
|
|
|
644 get_number (DEVICE_XATOM_PIXEL_SIZE (d), pixel);
|
|
|
645 get_number (DEVICE_XATOM_POINT_SIZE (d), point);
|
|
|
646 get_number (DEVICE_XATOM_RESOLUTION_X (d), res_x);
|
|
|
647 get_number (DEVICE_XATOM_RESOLUTION_Y (d), res_y);
|
|
|
648 get_string (DEVICE_XATOM_SPACING (d), spacing);
|
|
|
649 get_number (DEVICE_XATOM_AVERAGE_WIDTH (d), avg_width);
|
|
|
650 get_string (DEVICE_XATOM_CHARSET_REGISTRY (d), registry);
|
|
|
651 get_string (DEVICE_XATOM_CHARSET_ENCODING (d), encoding);
|
|
|
652 #undef get_number
|
|
|
653 #undef get_string
|
|
|
654
|
|
|
655 sprintf (composed_name,
|
|
|
656 "-%s-%s-%s-%s-%s-%s-%ld-%ld-%ld-%ld-%s-%ld-%s-%s",
|
|
|
657 foundry, family, weight, slant, setwidth, add_style, pixel,
|
|
|
658 point, res_x, res_y, spacing, avg_width, registry, encoding);
|
|
|
659 ok = 1;
|
|
|
660
|
|
|
661 FAIL:
|
|
|
662 if (ok)
|
|
|
663 {
|
|
|
664 int L = strlen (composed_name) + 1;
|
|
|
665 result = (char *) xmalloc (L);
|
|
|
666 strncpy (result, composed_name, L);
|
|
|
667 }
|
|
|
668 else
|
|
|
669 result = 0;
|
|
|
670
|
|
|
671 if (foundry) XFree (foundry);
|
|
|
672 if (family) XFree (family);
|
|
|
673 if (weight) XFree (weight);
|
|
|
674 if (slant) XFree (slant);
|
|
|
675 if (setwidth) XFree (setwidth);
|
|
|
676 if (add_style) XFree (add_style);
|
|
|
677 if (spacing) XFree (spacing);
|
|
|
678 if (registry) XFree (registry);
|
|
|
679 if (encoding) XFree (encoding);
|
|
|
680
|
|
|
681 return result;
|
|
|
682 }
|
|
|
683
|
|
|
684 /* Unbounded, for sufficiently small values of infinity... */
|
|
|
685 #define MAX_FONT_COUNT 5000
|
|
|
686
|
|
|
687 static char *
|
|
|
688 truename_via_XListFonts (Display *dpy, char *font_name)
|
|
|
689 {
|
|
|
690 char *result = 0;
|
|
|
691 char **names;
|
|
|
692 int count = 0;
|
|
|
693
|
|
|
694 #ifndef XOPENFONT_SORTS
|
|
|
695 /* In a sensible world, the first font returned by XListFonts()
|
|
|
696 would be the font that XOpenFont() would use. */
|
|
|
697 names = XListFonts (dpy, font_name, 1, &count);
|
|
|
698 if (count) result = names [0];
|
|
|
699 #else
|
|
|
700 /* But the world I live in is much more perverse. */
|
|
|
701 names = XListFonts (dpy, font_name, MAX_FONT_COUNT, &count);
|
|
|
702 while (count--)
|
|
|
703 /* If names[count] is lexicographically less than result, use it.
|
|
|
704 (#### Should we be comparing case-insensitively?) */
|
|
|
705 if (result == 0 || (strcmp (result, names [count]) < 0))
|
|
|
706 result = names [count];
|
|
|
707 #endif
|
|
|
708
|
|
|
709 if (result)
|
|
|
710 result = xstrdup (result);
|
|
|
711 if (names)
|
|
|
712 XFreeFontNames (names);
|
|
|
713
|
|
|
714 return result; /* this must be freed by caller if non-0 */
|
|
|
715 }
|
|
|
716
|
|
|
717 static Lisp_Object
|
|
|
718 x_font_truename (Display *dpy, char *name, XFontStruct *font)
|
|
|
719 {
|
|
|
720 char *truename_FONT = 0;
|
|
|
721 char *truename_random = 0;
|
|
|
722 char *truename = 0;
|
|
|
723
|
|
|
724 /* The search order is:
|
|
|
725 - if FONT property exists, and is a valid name, return it.
|
|
|
726 - if the other props exist, and add up to a valid name, return it.
|
|
|
727 - if we find a matching name with XListFonts, return it.
|
|
|
728 - if FONT property exists, return it regardless.
|
|
|
729 - if other props exist, return the resultant name regardless.
|
|
|
730 - else return 0.
|
|
|
731 */
|
|
|
732
|
|
|
733 truename = truename_FONT = truename_via_FONT_prop (dpy, font);
|
|
|
734 if (truename && !valid_x_font_name_p (dpy, truename))
|
|
|
735 truename = 0;
|
|
|
736 if (!truename)
|
|
|
737 truename = truename_random = truename_via_random_props (dpy, font);
|
|
|
738 if (truename && !valid_x_font_name_p (dpy, truename))
|
|
|
739 truename = 0;
|
|
|
740 if (!truename && name)
|
|
|
741 truename = truename_via_XListFonts (dpy, name);
|
|
|
742
|
|
|
743 if (!truename)
|
|
|
744 {
|
|
|
745 /* Gag - we weren't able to find a seemingly-valid truename.
|
|
|
746 Well, maybe we're on one of those braindead systems where
|
|
|
747 XListFonts() and XLoadFont() are in violent disagreement.
|
|
|
748 If we were able to compute a truename, try using that even
|
|
|
749 if evidence suggests that it's not a valid name - because
|
|
|
750 maybe it is, really, and that's better than nothing.
|
|
|
751 X Windows: You'll envy the dead.
|
|
|
752 */
|
|
|
753 if (truename_FONT)
|
|
|
754 truename = truename_FONT;
|
|
|
755 else if (truename_random)
|
|
|
756 truename = truename_random;
|
|
|
757 }
|
|
|
758
|
|
|
759 /* One or both of these are not being used - free them. */
|
|
|
760 if (truename_FONT && truename_FONT != truename)
|
|
|
761 XFree (truename_FONT);
|
|
|
762 if (truename_random && truename_random != truename)
|
|
|
763 XFree (truename_random);
|
|
|
764
|
|
|
765 if (truename)
|
|
|
766 {
|
|
|
767 Lisp_Object result = build_string (truename);
|
|
|
768 XFree (truename);
|
|
|
769 return result;
|
|
|
770 }
|
|
|
771 else
|
|
|
772 return Qnil;
|
|
|
773 }
|
|
|
774
|
|
|
775 static Lisp_Object
|
|
|
776 x_font_instance_truename (struct Lisp_Font_Instance *f, Error_behavior errb)
|
|
|
777 {
|
|
|
778 struct device *d = XDEVICE (f->device);
|
|
|
779
|
|
|
780 if (NILP (FONT_INSTANCE_X_TRUENAME (f)))
|
|
|
781 {
|
|
|
782 Display *dpy = DEVICE_X_DISPLAY (d);
|
|
|
783 char *name = (char *) XSTRING_DATA (f->name);
|
|
|
784 {
|
|
|
785 FONT_INSTANCE_X_TRUENAME (f) =
|
|
|
786 x_font_truename (dpy, name, FONT_INSTANCE_X_FONT (f));
|
|
|
787 }
|
|
|
788 if (NILP (FONT_INSTANCE_X_TRUENAME (f)))
|
|
|
789 {
|
|
|
790 Lisp_Object font_instance;
|
|
|
791 XSETFONT_INSTANCE (font_instance, f);
|
|
|
792
|
|
|
793 maybe_signal_simple_error ("Couldn't determine font truename",
|
|
|
794 font_instance, Qfont, errb);
|
|
|
795 /* Ok, just this once, return the font name as the truename.
|
|
|
796 (This is only used by Fequal() right now.) */
|
|
|
797 return f->name;
|
|
|
798 }
|
|
|
799 }
|
|
|
800 return (FONT_INSTANCE_X_TRUENAME (f));
|
|
|
801 }
|
|
|
802
|
|
|
803 static Lisp_Object
|
|
|
804 x_font_instance_properties (struct Lisp_Font_Instance *f)
|
|
|
805 {
|
|
|
806 struct device *d = XDEVICE (f->device);
|
|
|
807 int i;
|
|
|
808 Lisp_Object result = Qnil;
|
|
|
809 XFontProp *props;
|
|
|
810 Display *dpy;
|
|
|
811
|
|
|
812 dpy = DEVICE_X_DISPLAY (d);
|
|
|
813 props = FONT_INSTANCE_X_FONT (f)->properties;
|
|
|
814 for (i = FONT_INSTANCE_X_FONT (f)->n_properties - 1; i >= 0; i--)
|
|
|
815 {
|
|
|
816 char *name_str = 0;
|
|
|
817 char *val_str = 0;
|
|
|
818 Lisp_Object name, value;
|
|
|
819 Atom atom = props [i].name;
|
|
|
820 name_str = XGetAtomName (dpy, atom);
|
|
|
821 name = (name_str ? intern (name_str) : Qnil);
|
|
|
822 if (name_str &&
|
|
|
823 (atom == XA_FONT ||
|
|
|
824 atom == DEVICE_XATOM_FOUNDRY (d) ||
|
|
|
825 atom == DEVICE_XATOM_FAMILY_NAME (d) ||
|
|
|
826 atom == DEVICE_XATOM_WEIGHT_NAME (d) ||
|
|
|
827 atom == DEVICE_XATOM_SLANT (d) ||
|
|
|
828 atom == DEVICE_XATOM_SETWIDTH_NAME (d) ||
|
|
|
829 atom == DEVICE_XATOM_ADD_STYLE_NAME (d) ||
|
|
|
830 atom == DEVICE_XATOM_SPACING (d) ||
|
|
|
831 atom == DEVICE_XATOM_CHARSET_REGISTRY (d) ||
|
|
|
832 atom == DEVICE_XATOM_CHARSET_ENCODING (d) ||
|
|
|
833 !strcmp (name_str, "CHARSET_COLLECTIONS") ||
|
|
|
834 !strcmp (name_str, "FONTNAME_REGISTRY") ||
|
|
|
835 !strcmp (name_str, "CLASSIFICATION") ||
|
|
|
836 !strcmp (name_str, "COPYRIGHT") ||
|
|
|
837 !strcmp (name_str, "DEVICE_FONT_NAME") ||
|
|
|
838 !strcmp (name_str, "FULL_NAME") ||
|
|
|
839 !strcmp (name_str, "MONOSPACED") ||
|
|
|
840 !strcmp (name_str, "QUALITY") ||
|
|
|
841 !strcmp (name_str, "RELATIVE_SET") ||
|
|
|
842 !strcmp (name_str, "RELATIVE_WEIGHT") ||
|
|
|
843 !strcmp (name_str, "STYLE")))
|
|
|
844 {
|
|
|
845 val_str = XGetAtomName (dpy, props [i].card32);
|
|
|
846 value = (val_str ? build_string (val_str) : Qnil);
|
|
|
847 }
|
|
|
848 else
|
|
|
849 value = make_int (props [i].card32);
|
|
|
850 if (name_str) XFree (name_str);
|
|
|
851 result = Fcons (Fcons (name, value), result);
|
|
|
852 }
|
|
|
853 return result;
|
|
|
854 }
|
|
|
855
|
|
|
856 static Lisp_Object
|
|
|
857 x_list_fonts (Lisp_Object pattern, Lisp_Object device)
|
|
|
858 {
|
|
|
859 char **names;
|
|
|
860 int count = 0;
|
|
|
861 Lisp_Object result = Qnil;
|
|
|
862 CONST char *patternext;
|
|
|
863
|
|
|
864 GET_C_STRING_BINARY_DATA_ALLOCA (pattern, patternext);
|
|
|
865
|
|
|
866 names = XListFonts (DEVICE_X_DISPLAY (XDEVICE (device)),
|
|
|
867 patternext, MAX_FONT_COUNT, &count);
|
|
|
868 while (count--)
|
|
|
869 result = Fcons (build_ext_string (names [count], FORMAT_BINARY), result);
|
|
|
870 if (names)
|
|
|
871 XFreeFontNames (names);
|
|
|
872 return result;
|
|
|
873 }
|
|
|
874
|
|
|
875 #ifdef MULE
|
|
|
876
|
|
|
877 static int
|
|
|
878 x_font_spec_matches_charset (struct device *d, Lisp_Object charset,
|
|
|
879 CONST Bufbyte *nonreloc, Lisp_Object reloc,
|
|
|
880 Bytecount offset, Bytecount length)
|
|
|
881 {
|
|
|
882 if (UNBOUNDP (charset))
|
|
|
883 return 1;
|
|
|
884 /* Hack! Short font names don't have the registry in them,
|
|
|
885 so we just assume the user knows what they're doing in the
|
|
|
886 case of ASCII. For other charsets, you gotta give the
|
|
|
887 long form; sorry buster.
|
|
|
888 */
|
|
|
889 if (EQ (charset, Vcharset_ascii))
|
|
|
890 {
|
|
|
891 CONST Bufbyte *the_nonreloc = nonreloc;
|
|
|
892 int i;
|
|
|
893 Bytecount the_length = length;
|
|
|
894
|
|
|
895 if (!the_nonreloc)
|
|
|
896 the_nonreloc = XSTRING_DATA (reloc);
|
|
|
897 fixup_internal_substring (nonreloc, reloc, offset, &the_length);
|
|
|
898 the_nonreloc += offset;
|
|
|
899 if (!memchr (the_nonreloc, '*', the_length))
|
|
|
900 {
|
|
|
901 for (i = 0;; i++)
|
|
|
902 {
|
|
|
903 CONST Bufbyte *new_nonreloc = (CONST Bufbyte *)
|
|
|
904 memchr (the_nonreloc, '-', the_length);
|
|
|
905 if (!new_nonreloc)
|
|
|
906 break;
|
|
|
907 new_nonreloc++;
|
|
|
908 the_length -= new_nonreloc - the_nonreloc;
|
|
|
909 the_nonreloc = new_nonreloc;
|
|
|
910 }
|
|
|
911
|
|
|
912 /* If it has less than 5 dashes, it's a short font.
|
|
|
913 Of course, long fonts always have 14 dashes or so, but short
|
|
|
914 fonts never have more than 1 or 2 dashes, so this is some
|
|
|
915 sort of reasonable heuristic. */
|
|
|
916 if (i < 5)
|
|
|
917 return 1;
|
|
|
918 }
|
|
|
919 }
|
|
|
920
|
|
|
921 return (fast_string_match (XCHARSET_REGISTRY (charset),
|
|
|
922 nonreloc, reloc, offset, length, 1,
|
|
|
923 ERROR_ME, 0) >= 0);
|
|
|
924 }
|
|
|
925
|
|
|
926 /* find a font spec that matches font spec FONT and also matches
|
|
|
927 (the registry of) CHARSET. */
|
|
|
928 static Lisp_Object
|
|
|
929 x_find_charset_font (Lisp_Object device, Lisp_Object font, Lisp_Object charset)
|
|
|
930 {
|
|
|
931 char **names;
|
|
|
932 int count = 0;
|
|
|
933 Lisp_Object result = Qnil;
|
|
|
934 CONST char *patternext;
|
|
|
935 int i;
|
|
|
936
|
|
|
937 GET_C_STRING_BINARY_DATA_ALLOCA (font, patternext);
|
|
|
938
|
|
|
939 names = XListFonts (DEVICE_X_DISPLAY (XDEVICE (device)),
|
|
|
940 patternext, MAX_FONT_COUNT, &count);
|
|
|
941 /* ### This code seems awfully bogus -- mrb */
|
|
|
942 for (i = 0; i < count; i ++)
|
|
|
943 {
|
|
|
944 CONST Bufbyte *intname;
|
|
|
945
|
|
|
946 GET_C_CHARPTR_INT_BINARY_DATA_ALLOCA (names[i], intname);
|
|
|
947 if (x_font_spec_matches_charset (XDEVICE (device), charset,
|
|
|
948 intname, Qnil, 0, -1))
|
|
|
949 {
|
|
|
950 result = build_string ((char *) intname);
|
|
|
951 break;
|
|
|
952 }
|
|
|
953 }
|
|
|
954
|
|
|
955 if (names)
|
|
|
956 XFreeFontNames (names);
|
|
|
957
|
|
|
958 /* Check for a short font name. */
|
|
|
959 if (NILP (result)
|
|
|
960 && x_font_spec_matches_charset (XDEVICE (device), charset, 0,
|
|
|
961 font, 0, -1))
|
|
|
962 return font;
|
|
|
963
|
|
|
964 return result;
|
|
|
965 }
|
|
|
966
|
|
|
967 #endif /* MULE */
|
|
|
968
|
|
|
969
|
|
|
970 /************************************************************************/
|
|
|
971 /* initialization */
|
|
|
972 /************************************************************************/
|
|
|
973
|
|
|
974 void
|
|
|
975 syms_of_objects_x (void)
|
|
|
976 {
|
|
|
977 }
|
|
|
978
|
|
|
979 void
|
|
|
980 console_type_create_objects_x (void)
|
|
|
981 {
|
|
|
982 /* object methods */
|
|
|
983
|
|
|
984 CONSOLE_HAS_METHOD (x, initialize_color_instance);
|
|
|
985 CONSOLE_HAS_METHOD (x, print_color_instance);
|
|
|
986 CONSOLE_HAS_METHOD (x, finalize_color_instance);
|
|
|
987 CONSOLE_HAS_METHOD (x, color_instance_equal);
|
|
|
988 CONSOLE_HAS_METHOD (x, color_instance_hash);
|
|
|
989 CONSOLE_HAS_METHOD (x, color_instance_rgb_components);
|
|
|
990 CONSOLE_HAS_METHOD (x, valid_color_name_p);
|
|
|
991
|
|
|
992 CONSOLE_HAS_METHOD (x, initialize_font_instance);
|
|
|
993 CONSOLE_HAS_METHOD (x, mark_font_instance);
|
|
|
994 CONSOLE_HAS_METHOD (x, print_font_instance);
|
|
|
995 CONSOLE_HAS_METHOD (x, finalize_font_instance);
|
|
|
996 CONSOLE_HAS_METHOD (x, font_instance_truename);
|
|
|
997 CONSOLE_HAS_METHOD (x, font_instance_properties);
|
|
|
998 CONSOLE_HAS_METHOD (x, list_fonts);
|
|
|
999 #ifdef MULE
|
|
|
1000 CONSOLE_HAS_METHOD (x, find_charset_font);
|
|
|
1001 CONSOLE_HAS_METHOD (x, font_spec_matches_charset);
|
|
|
1002 #endif
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 void
|
|
|
1006 vars_of_objects_x (void)
|
|
|
1007 {
|
|
|
1008 DEFVAR_BOOL ("x-handle-non-fully-specified-fonts",
|
|
|
1009 &x_handle_non_fully_specified_fonts /*
|
|
|
1010 If this is true then fonts which do not have all characters specified
|
|
|
1011 will be considered to be proportional width even if they are actually
|
|
|
1012 fixed-width. If this is not done then characters which are supposed to
|
|
|
1013 have 0 width may appear to actually have some width.
|
|
|
1014
|
|
|
1015 Note: While setting this to t guarantees correct output in all
|
|
|
1016 circumstances, it also causes a noticeable performance hit when using
|
|
|
1017 fixed-width fonts. Since most people don't use characters which could
|
|
|
1018 cause problems this is set to nil by default.
|
|
|
1019 */ );
|
|
|
1020 x_handle_non_fully_specified_fonts = 0;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 void
|
|
|
1024 Xatoms_of_objects_x (struct device *d)
|
|
|
1025 {
|
|
|
1026 Display *D = DEVICE_X_DISPLAY (d);
|
|
|
1027
|
|
|
1028 DEVICE_XATOM_FOUNDRY (d) = XInternAtom (D, "FOUNDRY", False);
|
|
|
1029 DEVICE_XATOM_FAMILY_NAME (d) = XInternAtom (D, "FAMILY_NAME", False);
|
|
|
1030 DEVICE_XATOM_WEIGHT_NAME (d) = XInternAtom (D, "WEIGHT_NAME", False);
|
|
|
1031 DEVICE_XATOM_SLANT (d) = XInternAtom (D, "SLANT", False);
|
|
|
1032 DEVICE_XATOM_SETWIDTH_NAME (d) = XInternAtom (D, "SETWIDTH_NAME", False);
|
|
|
1033 DEVICE_XATOM_ADD_STYLE_NAME (d) = XInternAtom (D, "ADD_STYLE_NAME", False);
|
|
|
1034 DEVICE_XATOM_PIXEL_SIZE (d) = XInternAtom (D, "PIXEL_SIZE", False);
|
|
|
1035 DEVICE_XATOM_POINT_SIZE (d) = XInternAtom (D, "POINT_SIZE", False);
|
|
|
1036 DEVICE_XATOM_RESOLUTION_X (d) = XInternAtom (D, "RESOLUTION_X", False);
|
|
|
1037 DEVICE_XATOM_RESOLUTION_Y (d) = XInternAtom (D, "RESOLUTION_Y", False);
|
|
|
1038 DEVICE_XATOM_SPACING (d) = XInternAtom (D, "SPACING", False);
|
|
|
1039 DEVICE_XATOM_AVERAGE_WIDTH (d) = XInternAtom (D, "AVERAGE_WIDTH", False);
|
|
|
1040 DEVICE_XATOM_CHARSET_REGISTRY(d) = XInternAtom (D, "CHARSET_REGISTRY",False);
|
|
|
1041 DEVICE_XATOM_CHARSET_ENCODING(d) = XInternAtom (D, "CHARSET_ENCODING",False);
|
|
|
1042 }
|
