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