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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442
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5 Copyright (C) 1995, 1996, 2000 Ben Wing.
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428
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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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442
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29 /* This file Mule-ized by Ben Wing, 7-10-00. */
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30
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428
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31 #include <config.h>
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32 #include "lisp.h"
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33
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34 #include "console-x.h"
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35 #include "objects-x.h"
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36
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37 #include "buffer.h"
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38 #include "device.h"
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39 #include "insdel.h"
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40
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41 int x_handle_non_fully_specified_fonts;
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42
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43
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44 /************************************************************************/
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45 /* color instances */
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46 /************************************************************************/
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47
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48 /* Replacement for XAllocColor() that tries to return the nearest
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49 available color if the colormap is full. Original was from FSFmacs,
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50 but rewritten by Jareth Hein <jareth@camelot-soft.com> 97/11/25
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51 Modified by Lee Kindness <lkindness@csl.co.uk> 31/08/99 to handle previous
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52 total failure which was due to a read/write colorcell being the nearest
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53 match - tries the next nearest...
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54
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55 Return value is 1 for normal success, 2 for nearest color success,
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442
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56 3 for Non-deallocable success. */
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428
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57 int
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58 allocate_nearest_color (Display *display, Colormap colormap, Visual *visual,
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59 XColor *color_def)
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60 {
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61 int status;
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62
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63 if (visual->class == DirectColor || visual->class == TrueColor)
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64 {
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65 if (XAllocColor (display, colormap, color_def) != 0)
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66 {
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67 status = 1;
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68 }
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69 else
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70 {
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71 /* We're dealing with a TrueColor/DirectColor visual, so play games
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72 with the RGB values in the XColor struct. */
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440
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73 /* #### JH: I'm not sure how a call to XAllocColor can fail in a
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428
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74 TrueColor or DirectColor visual, so I will just reformat the
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75 request to match the requirements of the visual, and re-issue
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76 the request. If this fails for anybody, I wanna know about it
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77 so I can come up with a better plan */
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78
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79 unsigned long rshift,gshift,bshift,rbits,gbits,bbits,junk;
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80 junk = visual->red_mask;
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81 rshift = 0;
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82 while ((junk & 0x1) == 0) {
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83 junk = junk >> 1;
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84 rshift ++;
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85 }
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86 rbits = 0;
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87 while (junk != 0) {
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88 junk = junk >> 1;
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89 rbits++;
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90 }
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91 junk = visual->green_mask;
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92 gshift = 0;
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93 while ((junk & 0x1) == 0) {
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94 junk = junk >> 1;
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95 gshift ++;
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96 }
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97 gbits = 0;
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98 while (junk != 0) {
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99 junk = junk >> 1;
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100 gbits++;
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101 }
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102 junk = visual->blue_mask;
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103 bshift = 0;
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104 while ((junk & 0x1) == 0) {
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105 junk = junk >> 1;
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106 bshift ++;
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107 }
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108 bbits = 0;
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109 while (junk != 0) {
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110 junk = junk >> 1;
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111 bbits++;
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112 }
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113
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114 color_def->red = color_def->red >> (16 - rbits);
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115 color_def->green = color_def->green >> (16 - gbits);
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116 color_def->blue = color_def->blue >> (16 - bbits);
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117 if (XAllocColor (display, colormap, color_def) != 0)
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118 status = 1;
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119 else
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120 {
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121 int rd, gr, bl;
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440
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122 /* #### JH: I'm punting here, knowing that doing this will at
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428
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123 least draw the color correctly. However, unless we convert
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124 all of the functions that allocate colors (graphics
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125 libraries, etc) to use this function doing this is very
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126 likely to cause problems later... */
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127
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128 if (rbits > 8)
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129 rd = color_def->red << (rbits - 8);
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130 else
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131 rd = color_def->red >> (8 - rbits);
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132 if (gbits > 8)
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133 gr = color_def->green << (gbits - 8);
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134 else
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135 gr = color_def->green >> (8 - gbits);
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136 if (bbits > 8)
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137 bl = color_def->blue << (bbits - 8);
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138 else
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139 bl = color_def->blue >> (8 - bbits);
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442
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140 color_def->pixel = (rd << rshift) | (gr << gshift) | (bl <<
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141 bshift);
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428
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142 status = 3;
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143 }
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144 }
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145 }
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146 else
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147 {
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148 XColor *cells = NULL;
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149 /* JH: I can't believe there's no way to go backwards from a
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150 colormap ID and get its visual and number of entries, but X
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151 apparently isn't built that way... */
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152 int no_cells = visual->map_entries;
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153 status = 0;
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154
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155 if (XAllocColor (display, colormap, color_def) != 0)
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156 status = 1;
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157 else while( status != 2 )
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158 {
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159 /* If we got to this point, the colormap is full, so we're
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160 going to try and get the next closest color. The algorithm used
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161 is a least-squares matching, which is what X uses for closest
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162 color matching with StaticColor visuals. */
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163 int nearest;
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164 long nearest_delta, trial_delta;
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165 int x;
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166
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167 if( cells == NULL )
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442
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168 {
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169 cells = alloca_array (XColor, no_cells);
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170 for (x = 0; x < no_cells; x++)
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171 cells[x].pixel = x;
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428
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172
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442
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173 /* read the current colormap */
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174 XQueryColors (display, colormap, cells, no_cells);
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175 }
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428
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176
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177 nearest = 0;
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178 /* I'm assuming CSE so I'm not going to condense this. */
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179 nearest_delta = ((((color_def->red >> 8) - (cells[0].red >> 8))
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180 * ((color_def->red >> 8) - (cells[0].red >> 8)))
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181 +
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182 (((color_def->green >> 8) - (cells[0].green >> 8))
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442
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183 * ((color_def->green >> 8) - (cells[0].green >>
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184 8)))
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428
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185 +
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186 (((color_def->blue >> 8) - (cells[0].blue >> 8))
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442
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187 * ((color_def->blue >> 8) - (cells[0].blue >>
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188 8))));
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428
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189 for (x = 1; x < no_cells; x++)
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190 {
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191 trial_delta = ((((color_def->red >> 8) - (cells[x].red >> 8))
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192 * ((color_def->red >> 8) - (cells[x].red >> 8)))
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193 +
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194 (((color_def->green >> 8) - (cells[x].green >> 8))
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442
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195 * ((color_def->green >> 8) - (cells[x].green >>
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196 8)))
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428
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197 +
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198 (((color_def->blue >> 8) - (cells[x].blue >> 8))
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442
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199 * ((color_def->blue >> 8) - (cells[x].blue >>
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200 8))));
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428
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201
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202 /* less? Ignore cells marked as previously failing */
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203 if( (trial_delta < nearest_delta) &&
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204 (cells[x].pixel != ULONG_MAX) )
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205 {
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206 nearest = x;
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207 nearest_delta = trial_delta;
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208 }
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209 }
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210 color_def->red = cells[nearest].red;
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211 color_def->green = cells[nearest].green;
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212 color_def->blue = cells[nearest].blue;
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213 if (XAllocColor (display, colormap, color_def) != 0)
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442
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214 status = 2;
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428
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215 else
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442
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216 /* LSK: Either the colour map has changed since
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217 * we read it, or the colour is allocated
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218 * read/write... Mark this cmap entry so it's
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219 * ignored in the next iteration.
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220 */
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221 cells[nearest].pixel = ULONG_MAX;
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428
|
222 }
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223 }
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224 return status;
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225 }
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226
|
442
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227 static int
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228 x_parse_nearest_color (struct device *d, XColor *color, Lisp_Object name,
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229 Error_behavior errb)
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428
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230 {
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231 Display *dpy = DEVICE_X_DISPLAY (d);
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232 Colormap cmap = DEVICE_X_COLORMAP (d);
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233 Visual *visual = DEVICE_X_VISUAL (d);
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234 int result;
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235
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236 xzero (*color);
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237 {
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442
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238 const Extbyte *extname;
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428
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239
|
442
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240 LISP_STRING_TO_EXTERNAL (name, extname, Qx_color_name_encoding);
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241 result = XParseColor (dpy, cmap, extname, color);
|
428
|
242 }
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243 if (!result)
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244 {
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442
|
245 maybe_signal_simple_error ("Unrecognized color", name, Qcolor, errb);
|
428
|
246 return 0;
|
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247 }
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248 result = allocate_nearest_color (dpy, cmap, visual, color);
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249 if (!result)
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250 {
|
442
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251 maybe_signal_simple_error ("Couldn't allocate color", name, Qcolor,
|
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252 errb);
|
428
|
253 return 0;
|
|
254 }
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255
|
|
256 return result;
|
|
257 }
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258
|
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259 static int
|
440
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260 x_initialize_color_instance (Lisp_Color_Instance *c, Lisp_Object name,
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428
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261 Lisp_Object device, Error_behavior errb)
|
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262 {
|
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263 XColor color;
|
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264 int result;
|
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265
|
442
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266 result = x_parse_nearest_color (XDEVICE (device), &color, name, errb);
|
428
|
267
|
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268 if (!result)
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269 return 0;
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270
|
|
271 /* Don't allocate the data until we're sure that we will succeed,
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272 or the finalize method may get fucked. */
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273 c->data = xnew (struct x_color_instance_data);
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274 if (result == 3)
|
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275 COLOR_INSTANCE_X_DEALLOC (c) = 0;
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276 else
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277 COLOR_INSTANCE_X_DEALLOC (c) = 1;
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278 COLOR_INSTANCE_X_COLOR (c) = color;
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279 return 1;
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280 }
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281
|
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282 static void
|
440
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283 x_print_color_instance (Lisp_Color_Instance *c,
|
428
|
284 Lisp_Object printcharfun,
|
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285 int escapeflag)
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|
286 {
|
444
|
287 char buf[100];
|
428
|
288 XColor color = COLOR_INSTANCE_X_COLOR (c);
|
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289 sprintf (buf, " %ld=(%X,%X,%X)",
|
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290 color.pixel, color.red, color.green, color.blue);
|
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291 write_c_string (buf, printcharfun);
|
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292 }
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293
|
|
294 static void
|
440
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295 x_finalize_color_instance (Lisp_Color_Instance *c)
|
428
|
296 {
|
|
297 if (c->data)
|
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298 {
|
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299 if (DEVICE_LIVE_P (XDEVICE (c->device)))
|
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300 {
|
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301 if (COLOR_INSTANCE_X_DEALLOC (c))
|
|
302 {
|
442
|
303 XFreeColors (DEVICE_X_DISPLAY (XDEVICE (c->device)),
|
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304 DEVICE_X_COLORMAP (XDEVICE (c->device)),
|
428
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305 &COLOR_INSTANCE_X_COLOR (c).pixel, 1, 0);
|
|
306 }
|
|
307 }
|
|
308 xfree (c->data);
|
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309 c->data = 0;
|
|
310 }
|
|
311 }
|
|
312
|
|
313 /* Color instances are equal if they resolve to the same color on the
|
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314 screen (have the same RGB values). I imagine that
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315 "same RGB values" == "same cell in the colormap." Arguably we should
|
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316 be comparing their names or pixel values instead. */
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317
|
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318 static int
|
440
|
319 x_color_instance_equal (Lisp_Color_Instance *c1,
|
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320 Lisp_Color_Instance *c2,
|
428
|
321 int depth)
|
|
322 {
|
|
323 XColor color1 = COLOR_INSTANCE_X_COLOR (c1);
|
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324 XColor color2 = COLOR_INSTANCE_X_COLOR (c2);
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325 return ((color1.red == color2.red) &&
|
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326 (color1.green == color2.green) &&
|
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327 (color1.blue == color2.blue));
|
|
328 }
|
|
329
|
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330 static unsigned long
|
440
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331 x_color_instance_hash (Lisp_Color_Instance *c, int depth)
|
428
|
332 {
|
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333 XColor color = COLOR_INSTANCE_X_COLOR (c);
|
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334 return HASH3 (color.red, color.green, color.blue);
|
|
335 }
|
|
336
|
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337 static Lisp_Object
|
440
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338 x_color_instance_rgb_components (Lisp_Color_Instance *c)
|
428
|
339 {
|
|
340 XColor color = COLOR_INSTANCE_X_COLOR (c);
|
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341 return (list3 (make_int (color.red),
|
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342 make_int (color.green),
|
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343 make_int (color.blue)));
|
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344 }
|
|
345
|
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346 static int
|
|
347 x_valid_color_name_p (struct device *d, Lisp_Object color)
|
|
348 {
|
|
349 XColor c;
|
|
350 Display *dpy = DEVICE_X_DISPLAY (d);
|
|
351 Colormap cmap = DEVICE_X_COLORMAP (d);
|
442
|
352 const Extbyte *extname;
|
428
|
353
|
442
|
354 LISP_STRING_TO_EXTERNAL (color, extname, Qx_color_name_encoding);
|
428
|
355
|
440
|
356 return XParseColor (dpy, cmap, extname, &c);
|
428
|
357 }
|
|
358
|
|
359
|
|
360 /************************************************************************/
|
|
361 /* font instances */
|
|
362 /************************************************************************/
|
|
363
|
|
364 static int
|
440
|
365 x_initialize_font_instance (Lisp_Font_Instance *f, Lisp_Object name,
|
428
|
366 Lisp_Object device, Error_behavior errb)
|
|
367 {
|
440
|
368 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (device));
|
428
|
369 XFontStruct *xf;
|
442
|
370 const Extbyte *extname;
|
428
|
371
|
442
|
372 LISP_STRING_TO_EXTERNAL (f->name, extname, Qx_font_name_encoding);
|
428
|
373 xf = XLoadQueryFont (dpy, extname);
|
|
374
|
|
375 if (!xf)
|
|
376 {
|
|
377 maybe_signal_simple_error ("Couldn't load font", f->name,
|
|
378 Qfont, errb);
|
|
379 return 0;
|
|
380 }
|
|
381
|
|
382 if (!xf->max_bounds.width)
|
|
383 {
|
|
384 /* yes, this has been known to happen. */
|
|
385 XFreeFont (dpy, xf);
|
|
386 maybe_signal_simple_error ("X font is too small", f->name,
|
|
387 Qfont, errb);
|
|
388 return 0;
|
|
389 }
|
|
390
|
|
391 /* Don't allocate the data until we're sure that we will succeed,
|
|
392 or the finalize method may get fucked. */
|
|
393 f->data = xnew (struct x_font_instance_data);
|
|
394 FONT_INSTANCE_X_TRUENAME (f) = Qnil;
|
|
395 FONT_INSTANCE_X_FONT (f) = xf;
|
|
396 f->ascent = xf->ascent;
|
|
397 f->descent = xf->descent;
|
|
398 f->height = xf->ascent + xf->descent;
|
|
399 {
|
|
400 /* following change suggested by Ted Phelps <phelps@dstc.edu.au> */
|
|
401 unsigned int def_char = 'n'; /*xf->default_char;*/
|
|
402 unsigned int byte1, byte2;
|
|
403
|
|
404 once_more:
|
|
405 byte1 = def_char >> 8;
|
|
406 byte2 = def_char & 0xFF;
|
|
407
|
|
408 if (xf->per_char)
|
|
409 {
|
|
410 /* Old versions of the R5 font server have garbage (>63k) as
|
|
411 def_char. 'n' might not be a valid character. */
|
|
412 if (byte1 < xf->min_byte1 ||
|
|
413 byte1 > xf->max_byte1 ||
|
|
414 byte2 < xf->min_char_or_byte2 ||
|
|
415 byte2 > xf->max_char_or_byte2)
|
|
416 f->width = 0;
|
|
417 else
|
|
418 f->width = xf->per_char[(byte1 - xf->min_byte1) *
|
|
419 (xf->max_char_or_byte2 -
|
|
420 xf->min_char_or_byte2 + 1) +
|
|
421 (byte2 - xf->min_char_or_byte2)].width;
|
|
422 }
|
|
423 else
|
|
424 f->width = xf->max_bounds.width;
|
|
425
|
|
426 /* Some fonts have a default char whose width is 0. This is no good.
|
|
427 If that's the case, first try 'n' as the default char, and if n has
|
|
428 0 width too (unlikely) then just use the max width. */
|
|
429 if (f->width == 0)
|
|
430 {
|
|
431 if (def_char == xf->default_char)
|
|
432 f->width = xf->max_bounds.width;
|
|
433 else
|
|
434 {
|
|
435 def_char = xf->default_char;
|
|
436 goto once_more;
|
|
437 }
|
|
438 }
|
|
439 }
|
|
440 /* If all characters don't exist then there could potentially be
|
|
441 0-width characters lurking out there. Not setting this flag
|
|
442 trips an optimization that would make them appear to have width
|
|
443 to redisplay. This is bad. So we set it if not all characters
|
|
444 have the same width or if not all characters are defined.
|
|
445 */
|
|
446 /* #### This sucks. There is a measurable performance increase
|
|
447 when using proportional width fonts if this flag is not set.
|
|
448 Unfortunately so many of the fucking X fonts are not fully
|
|
449 defined that we could almost just get rid of this damn flag and
|
|
450 make it an assertion. */
|
|
451 f->proportional_p = (xf->min_bounds.width != xf->max_bounds.width ||
|
|
452 (x_handle_non_fully_specified_fonts &&
|
|
453 !xf->all_chars_exist));
|
|
454
|
|
455 return 1;
|
|
456 }
|
|
457
|
|
458 static void
|
440
|
459 x_mark_font_instance (Lisp_Font_Instance *f)
|
428
|
460 {
|
|
461 mark_object (FONT_INSTANCE_X_TRUENAME (f));
|
|
462 }
|
|
463
|
|
464 static void
|
440
|
465 x_print_font_instance (Lisp_Font_Instance *f,
|
428
|
466 Lisp_Object printcharfun,
|
|
467 int escapeflag)
|
|
468 {
|
444
|
469 char buf[200];
|
428
|
470 sprintf (buf, " 0x%lx", (unsigned long) FONT_INSTANCE_X_FONT (f)->fid);
|
|
471 write_c_string (buf, printcharfun);
|
|
472 }
|
|
473
|
|
474 static void
|
440
|
475 x_finalize_font_instance (Lisp_Font_Instance *f)
|
428
|
476 {
|
|
477
|
|
478 if (f->data)
|
|
479 {
|
|
480 if (DEVICE_LIVE_P (XDEVICE (f->device)))
|
|
481 {
|
|
482 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (f->device));
|
|
483
|
|
484 XFreeFont (dpy, FONT_INSTANCE_X_FONT (f));
|
|
485 }
|
|
486 xfree (f->data);
|
|
487 f->data = 0;
|
|
488 }
|
|
489 }
|
|
490
|
|
491 /* Determining the truename of a font is hard. (Big surprise.)
|
|
492
|
|
493 By "truename" we mean an XLFD-form name which contains no wildcards, yet
|
|
494 which resolves to *exactly* the same font as the one which we already have
|
|
495 the (probably wildcarded) name and `XFontStruct' of.
|
|
496
|
|
497 One might think that the first font returned by XListFonts would be the one
|
|
498 that XOpenFont would pick. Apparently this is the case on some servers,
|
|
499 but not on others. It would seem not to be specified.
|
|
500
|
|
501 The MIT R5 server sometimes appears to be picking the lexicographically
|
|
502 smallest font which matches the name (thus picking "adobe" fonts before
|
|
503 "bitstream" fonts even if the bitstream fonts are earlier in the path, and
|
|
504 also picking 100dpi adobe fonts over 75dpi adobe fonts even though the
|
|
505 75dpi are in the path earlier) but sometimes appears to be doing something
|
442
|
506 else entirely (for example, removing the bitstream fonts from the path will
|
428
|
507 cause the 75dpi adobe fonts to be used instead of the 100dpi, even though
|
|
508 their relative positions in the path (and their names!) have not changed).
|
|
509
|
|
510 The documentation for XSetFontPath() seems to indicate that the order of
|
442
|
511 entries in the font path means something, but it's pretty noncommittal about
|
428
|
512 it, and the spirit of the law is apparently not being obeyed...
|
|
513
|
|
514 All the fonts I've seen have a property named `FONT' which contains the
|
|
515 truename of the font. However, there are two problems with using this: the
|
|
516 first is that the X Protocol Document is quite explicit that all properties
|
|
517 are optional, so we can't depend on it being there. The second is that
|
|
518 it's conceivable that this alleged truename isn't actually accessible as a
|
|
519 font, due to some difference of opinion between the font designers and
|
|
520 whoever installed the font on the system.
|
|
521
|
|
522 So, our first attempt is to look for a FONT property, and then verify that
|
|
523 the name there is a valid name by running XListFonts on it. There's still
|
|
524 the potential that this could be true but we could still be being lied to,
|
|
525 but that seems pretty remote.
|
|
526
|
|
527 Late breaking news: I've gotten reports that SunOS 4.1.3U1
|
|
528 with OpenWound 3.0 has a font whose truename is really
|
|
529 "-Adobe-Courier-Medium-R-Normal--12-120-75-75-M-70-ISO8859-1"
|
|
530 but whose FONT property contains "Courier".
|
|
531
|
|
532 So we disbelieve the FONT property unless it begins with a dash and
|
|
533 is more than 30 characters long. X Windows: The defacto substandard.
|
|
534 X Windows: Complex nonsolutions to simple nonproblems. X Windows:
|
|
535 Live the nightmare.
|
|
536
|
|
537 If the FONT property doesn't exist, then we try and construct an XLFD name
|
|
538 out of the other font properties (FOUNDRY, FAMILY_NAME, WEIGHT_NAME, etc).
|
|
539 This is necessary at least for some versions of OpenWound. But who knows
|
|
540 what the future will bring.
|
|
541
|
|
542 If that doesn't work, then we use XListFonts and either take the first font
|
|
543 (which I think is the most sensible thing) or we find the lexicographically
|
|
544 least, depending on whether the preprocessor constant `XOPENFONT_SORTS' is
|
|
545 defined. This sucks because the two behaviors are a property of the server
|
|
546 being used, not the architecture on which emacs has been compiled. Also,
|
|
547 as I described above, sorting isn't ALWAYS what the server does. Really it
|
|
548 does something seemingly random. There is no reliable way to win if the
|
|
549 FONT property isn't present.
|
|
550
|
|
551 Another possibility which I haven't bothered to implement would be to map
|
|
552 over all of the matching fonts and find the first one that has the same
|
|
553 character metrics as the font we already have loaded. Even if this didn't
|
|
554 return exactly the same font, it would at least return one whose characters
|
|
555 were the same sizes, which would probably be good enough.
|
|
556
|
|
557 More late-breaking news: on RS/6000 AIX 3.2.4, the expression
|
|
558 XLoadQueryFont (dpy, "-*-Fixed-Medium-R-*-*-*-130-75-75-*-*-ISO8859-1")
|
|
559 actually returns the font
|
|
560 -Misc-Fixed-Medium-R-Normal--13-120-75-75-C-80-ISO8859-1
|
|
561 which is crazy, because that font doesn't even match that pattern! It is
|
|
562 also not included in the output produced by `xlsfonts' with that pattern.
|
|
563
|
|
564 So this is yet another example of XListFonts() and XOpenFont() using
|
|
565 completely different algorithms. This, however, is a goofier example of
|
|
566 this bug, because in this case, it's not just the search order that is
|
|
567 different -- the sets don't even intersect.
|
|
568
|
|
569 If anyone has any better ideas how to do this, or any insights on what it is
|
|
570 that the various servers are actually doing, please let me know! -- jwz. */
|
|
571
|
|
572 static int
|
442
|
573 valid_x_font_name_p (Display *dpy, Extbyte *name)
|
428
|
574 {
|
|
575 /* Maybe this should be implemented by calling XLoadFont and trapping
|
|
576 the error. That would be a lot of work, and wasteful as hell, but
|
|
577 might be more correct.
|
|
578 */
|
|
579 int nnames = 0;
|
444
|
580 Extbyte **names = 0;
|
428
|
581 if (! name)
|
|
582 return 0;
|
|
583 names = XListFonts (dpy, name, 1, &nnames);
|
|
584 if (names)
|
|
585 XFreeFontNames (names);
|
|
586 return (nnames != 0);
|
|
587 }
|
|
588
|
442
|
589 static Extbyte *
|
428
|
590 truename_via_FONT_prop (Display *dpy, XFontStruct *font)
|
|
591 {
|
|
592 unsigned long value = 0;
|
442
|
593 Extbyte *result = 0;
|
428
|
594 if (XGetFontProperty (font, XA_FONT, &value))
|
|
595 result = XGetAtomName (dpy, value);
|
|
596 /* result is now 0, or the string value of the FONT property. */
|
|
597 if (result)
|
|
598 {
|
|
599 /* Verify that result is an XLFD name (roughly...) */
|
|
600 if (result [0] != '-' || strlen (result) < (unsigned int) 30)
|
|
601 {
|
|
602 XFree (result);
|
|
603 result = 0;
|
|
604 }
|
|
605 }
|
|
606 return result; /* this must be freed by caller if non-0 */
|
|
607 }
|
|
608
|
442
|
609 static Extbyte *
|
428
|
610 truename_via_random_props (Display *dpy, XFontStruct *font)
|
|
611 {
|
|
612 struct device *d = get_device_from_display (dpy);
|
|
613 unsigned long value = 0;
|
442
|
614 Extbyte *foundry, *family, *weight, *slant, *setwidth, *add_style;
|
428
|
615 unsigned long pixel, point, res_x, res_y;
|
442
|
616 Extbyte *spacing;
|
428
|
617 unsigned long avg_width;
|
442
|
618 Extbyte *registry, *encoding;
|
|
619 Extbyte composed_name [2048];
|
428
|
620 int ok = 0;
|
442
|
621 Extbyte *result;
|
428
|
622
|
|
623 #define get_string(atom,var) \
|
|
624 if (XGetFontProperty (font, (atom), &value)) \
|
|
625 var = XGetAtomName (dpy, value); \
|
|
626 else { \
|
|
627 var = 0; \
|
|
628 goto FAIL; }
|
|
629 #define get_number(atom,var) \
|
|
630 if (!XGetFontProperty (font, (atom), &var) || \
|
|
631 var > 999) \
|
|
632 goto FAIL;
|
|
633
|
|
634 foundry = family = weight = slant = setwidth = 0;
|
|
635 add_style = spacing = registry = encoding = 0;
|
|
636
|
|
637 get_string (DEVICE_XATOM_FOUNDRY (d), foundry);
|
|
638 get_string (DEVICE_XATOM_FAMILY_NAME (d), family);
|
|
639 get_string (DEVICE_XATOM_WEIGHT_NAME (d), weight);
|
|
640 get_string (DEVICE_XATOM_SLANT (d), slant);
|
|
641 get_string (DEVICE_XATOM_SETWIDTH_NAME (d), setwidth);
|
|
642 get_string (DEVICE_XATOM_ADD_STYLE_NAME (d), add_style);
|
|
643 get_number (DEVICE_XATOM_PIXEL_SIZE (d), pixel);
|
|
644 get_number (DEVICE_XATOM_POINT_SIZE (d), point);
|
|
645 get_number (DEVICE_XATOM_RESOLUTION_X (d), res_x);
|
|
646 get_number (DEVICE_XATOM_RESOLUTION_Y (d), res_y);
|
|
647 get_string (DEVICE_XATOM_SPACING (d), spacing);
|
|
648 get_number (DEVICE_XATOM_AVERAGE_WIDTH (d), avg_width);
|
|
649 get_string (DEVICE_XATOM_CHARSET_REGISTRY (d), registry);
|
|
650 get_string (DEVICE_XATOM_CHARSET_ENCODING (d), encoding);
|
|
651 #undef get_number
|
|
652 #undef get_string
|
|
653
|
|
654 sprintf (composed_name,
|
|
655 "-%s-%s-%s-%s-%s-%s-%ld-%ld-%ld-%ld-%s-%ld-%s-%s",
|
|
656 foundry, family, weight, slant, setwidth, add_style, pixel,
|
|
657 point, res_x, res_y, spacing, avg_width, registry, encoding);
|
|
658 ok = 1;
|
|
659
|
|
660 FAIL:
|
|
661 if (ok)
|
|
662 {
|
|
663 int L = strlen (composed_name) + 1;
|
442
|
664 result = (Extbyte *) xmalloc (L);
|
428
|
665 strncpy (result, composed_name, L);
|
|
666 }
|
|
667 else
|
|
668 result = 0;
|
|
669
|
|
670 if (foundry) XFree (foundry);
|
|
671 if (family) XFree (family);
|
|
672 if (weight) XFree (weight);
|
|
673 if (slant) XFree (slant);
|
|
674 if (setwidth) XFree (setwidth);
|
|
675 if (add_style) XFree (add_style);
|
|
676 if (spacing) XFree (spacing);
|
|
677 if (registry) XFree (registry);
|
|
678 if (encoding) XFree (encoding);
|
|
679
|
|
680 return result;
|
|
681 }
|
|
682
|
|
683 /* Unbounded, for sufficiently small values of infinity... */
|
|
684 #define MAX_FONT_COUNT 5000
|
|
685
|
442
|
686 static Extbyte *
|
|
687 truename_via_XListFonts (Display *dpy, Extbyte *font_name)
|
428
|
688 {
|
442
|
689 Extbyte *result = 0;
|
444
|
690 Extbyte **names;
|
428
|
691 int count = 0;
|
|
692
|
|
693 #ifndef XOPENFONT_SORTS
|
|
694 /* In a sensible world, the first font returned by XListFonts()
|
|
695 would be the font that XOpenFont() would use. */
|
|
696 names = XListFonts (dpy, font_name, 1, &count);
|
|
697 if (count) result = names [0];
|
|
698 #else
|
|
699 /* But the world I live in is much more perverse. */
|
|
700 names = XListFonts (dpy, font_name, MAX_FONT_COUNT, &count);
|
|
701 while (count--)
|
442
|
702 /* !!#### Not Mule-friendly */
|
428
|
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
|
442
|
718 x_font_truename (Display *dpy, Extbyte *name, XFontStruct *font)
|
428
|
719 {
|
442
|
720 Extbyte *truename_FONT = 0;
|
|
721 Extbyte *truename_random = 0;
|
|
722 Extbyte *truename = 0;
|
428
|
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 {
|
442
|
767 Lisp_Object result = build_ext_string (truename, Qx_font_name_encoding);
|
428
|
768 XFree (truename);
|
|
769 return result;
|
|
770 }
|
|
771 else
|
|
772 return Qnil;
|
|
773 }
|
|
774
|
|
775 static Lisp_Object
|
440
|
776 x_font_instance_truename (Lisp_Font_Instance *f, Error_behavior errb)
|
428
|
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 {
|
442
|
784 Extbyte *nameext;
|
|
785
|
|
786 LISP_STRING_TO_EXTERNAL (f->name, nameext, Qx_font_name_encoding);
|
428
|
787 FONT_INSTANCE_X_TRUENAME (f) =
|
442
|
788 x_font_truename (dpy, nameext, FONT_INSTANCE_X_FONT (f));
|
428
|
789 }
|
|
790 if (NILP (FONT_INSTANCE_X_TRUENAME (f)))
|
|
791 {
|
|
792 Lisp_Object font_instance;
|
|
793 XSETFONT_INSTANCE (font_instance, f);
|
|
794
|
|
795 maybe_signal_simple_error ("Couldn't determine font truename",
|
442
|
796 font_instance, Qfont, errb);
|
428
|
797 /* Ok, just this once, return the font name as the truename.
|
|
798 (This is only used by Fequal() right now.) */
|
|
799 return f->name;
|
|
800 }
|
|
801 }
|
444
|
802 return FONT_INSTANCE_X_TRUENAME (f);
|
428
|
803 }
|
|
804
|
|
805 static Lisp_Object
|
440
|
806 x_font_instance_properties (Lisp_Font_Instance *f)
|
428
|
807 {
|
|
808 struct device *d = XDEVICE (f->device);
|
|
809 int i;
|
|
810 Lisp_Object result = Qnil;
|
444
|
811 Display *dpy = DEVICE_X_DISPLAY (d);
|
|
812 XFontProp *props = FONT_INSTANCE_X_FONT (f)->properties;
|
428
|
813
|
|
814 for (i = FONT_INSTANCE_X_FONT (f)->n_properties - 1; i >= 0; i--)
|
|
815 {
|
|
816 Lisp_Object name, value;
|
|
817 Atom atom = props [i].name;
|
442
|
818 Bufbyte *name_str = 0;
|
444
|
819 size_t name_len;
|
442
|
820 Extbyte *namestrext = XGetAtomName (dpy, atom);
|
|
821
|
|
822 if (namestrext)
|
444
|
823 TO_INTERNAL_FORMAT (C_STRING, namestrext,
|
|
824 ALLOCA, (name_str, name_len),
|
|
825 Qx_atom_name_encoding);
|
442
|
826
|
444
|
827 name = (name_str ? intern ((char *) name_str) : Qnil);
|
428
|
828 if (name_str &&
|
|
829 (atom == XA_FONT ||
|
|
830 atom == DEVICE_XATOM_FOUNDRY (d) ||
|
|
831 atom == DEVICE_XATOM_FAMILY_NAME (d) ||
|
|
832 atom == DEVICE_XATOM_WEIGHT_NAME (d) ||
|
|
833 atom == DEVICE_XATOM_SLANT (d) ||
|
|
834 atom == DEVICE_XATOM_SETWIDTH_NAME (d) ||
|
|
835 atom == DEVICE_XATOM_ADD_STYLE_NAME (d) ||
|
|
836 atom == DEVICE_XATOM_SPACING (d) ||
|
|
837 atom == DEVICE_XATOM_CHARSET_REGISTRY (d) ||
|
|
838 atom == DEVICE_XATOM_CHARSET_ENCODING (d) ||
|
444
|
839 !bufbyte_strcmp (name_str, "CHARSET_COLLECTIONS") ||
|
|
840 !bufbyte_strcmp (name_str, "FONTNAME_REGISTRY") ||
|
|
841 !bufbyte_strcmp (name_str, "CLASSIFICATION") ||
|
|
842 !bufbyte_strcmp (name_str, "COPYRIGHT") ||
|
|
843 !bufbyte_strcmp (name_str, "DEVICE_FONT_NAME") ||
|
|
844 !bufbyte_strcmp (name_str, "FULL_NAME") ||
|
|
845 !bufbyte_strcmp (name_str, "MONOSPACED") ||
|
|
846 !bufbyte_strcmp (name_str, "QUALITY") ||
|
|
847 !bufbyte_strcmp (name_str, "RELATIVE_SET") ||
|
|
848 !bufbyte_strcmp (name_str, "RELATIVE_WEIGHT") ||
|
|
849 !bufbyte_strcmp (name_str, "STYLE")))
|
428
|
850 {
|
442
|
851 Extbyte *val_str = XGetAtomName (dpy, props [i].card32);
|
|
852
|
|
853 value = (val_str ? build_ext_string (val_str, Qx_atom_name_encoding)
|
|
854 : Qnil);
|
428
|
855 }
|
|
856 else
|
|
857 value = make_int (props [i].card32);
|
442
|
858 if (namestrext) XFree (namestrext);
|
428
|
859 result = Fcons (Fcons (name, value), result);
|
|
860 }
|
|
861 return result;
|
|
862 }
|
|
863
|
|
864 static Lisp_Object
|
|
865 x_list_fonts (Lisp_Object pattern, Lisp_Object device)
|
|
866 {
|
444
|
867 Extbyte **names;
|
428
|
868 int count = 0;
|
|
869 Lisp_Object result = Qnil;
|
442
|
870 const Extbyte *patternext;
|
428
|
871
|
442
|
872 LISP_STRING_TO_EXTERNAL (pattern, patternext, Qx_font_name_encoding);
|
428
|
873
|
|
874 names = XListFonts (DEVICE_X_DISPLAY (XDEVICE (device)),
|
|
875 patternext, MAX_FONT_COUNT, &count);
|
|
876 while (count--)
|
442
|
877 result = Fcons (build_ext_string (names[count], Qx_font_name_encoding),
|
|
878 result);
|
428
|
879 if (names)
|
|
880 XFreeFontNames (names);
|
|
881 return result;
|
|
882 }
|
|
883
|
|
884 #ifdef MULE
|
|
885
|
|
886 static int
|
|
887 x_font_spec_matches_charset (struct device *d, Lisp_Object charset,
|
442
|
888 const Bufbyte *nonreloc, Lisp_Object reloc,
|
428
|
889 Bytecount offset, Bytecount length)
|
|
890 {
|
|
891 if (UNBOUNDP (charset))
|
|
892 return 1;
|
|
893 /* Hack! Short font names don't have the registry in them,
|
|
894 so we just assume the user knows what they're doing in the
|
|
895 case of ASCII. For other charsets, you gotta give the
|
|
896 long form; sorry buster.
|
|
897 */
|
|
898 if (EQ (charset, Vcharset_ascii))
|
|
899 {
|
442
|
900 const Bufbyte *the_nonreloc = nonreloc;
|
428
|
901 int i;
|
|
902 Bytecount the_length = length;
|
|
903
|
|
904 if (!the_nonreloc)
|
|
905 the_nonreloc = XSTRING_DATA (reloc);
|
|
906 fixup_internal_substring (nonreloc, reloc, offset, &the_length);
|
|
907 the_nonreloc += offset;
|
|
908 if (!memchr (the_nonreloc, '*', the_length))
|
|
909 {
|
|
910 for (i = 0;; i++)
|
|
911 {
|
442
|
912 const Bufbyte *new_nonreloc = (const Bufbyte *)
|
428
|
913 memchr (the_nonreloc, '-', the_length);
|
|
914 if (!new_nonreloc)
|
|
915 break;
|
|
916 new_nonreloc++;
|
|
917 the_length -= new_nonreloc - the_nonreloc;
|
|
918 the_nonreloc = new_nonreloc;
|
|
919 }
|
|
920
|
|
921 /* If it has less than 5 dashes, it's a short font.
|
|
922 Of course, long fonts always have 14 dashes or so, but short
|
|
923 fonts never have more than 1 or 2 dashes, so this is some
|
|
924 sort of reasonable heuristic. */
|
|
925 if (i < 5)
|
|
926 return 1;
|
|
927 }
|
|
928 }
|
|
929
|
|
930 return (fast_string_match (XCHARSET_REGISTRY (charset),
|
|
931 nonreloc, reloc, offset, length, 1,
|
|
932 ERROR_ME, 0) >= 0);
|
|
933 }
|
|
934
|
|
935 /* find a font spec that matches font spec FONT and also matches
|
|
936 (the registry of) CHARSET. */
|
|
937 static Lisp_Object
|
|
938 x_find_charset_font (Lisp_Object device, Lisp_Object font, Lisp_Object charset)
|
|
939 {
|
444
|
940 Extbyte **names;
|
428
|
941 int count = 0;
|
|
942 Lisp_Object result = Qnil;
|
442
|
943 const Extbyte *patternext;
|
428
|
944 int i;
|
|
945
|
442
|
946 LISP_STRING_TO_EXTERNAL (font, patternext, Qx_font_name_encoding);
|
428
|
947
|
|
948 names = XListFonts (DEVICE_X_DISPLAY (XDEVICE (device)),
|
|
949 patternext, MAX_FONT_COUNT, &count);
|
440
|
950 /* #### This code seems awfully bogus -- mrb */
|
428
|
951 for (i = 0; i < count; i ++)
|
|
952 {
|
442
|
953 const Bufbyte *intname;
|
444
|
954 Bytecount intlen;
|
428
|
955
|
444
|
956 TO_INTERNAL_FORMAT (C_STRING, names[i],
|
|
957 ALLOCA, (intname, intlen),
|
|
958 Qx_font_name_encoding);
|
428
|
959 if (x_font_spec_matches_charset (XDEVICE (device), charset,
|
442
|
960 intname, Qnil, 0, -1))
|
428
|
961 {
|
444
|
962 result = make_string (intname, intlen);
|
428
|
963 break;
|
|
964 }
|
|
965 }
|
|
966
|
|
967 if (names)
|
|
968 XFreeFontNames (names);
|
|
969
|
|
970 /* Check for a short font name. */
|
|
971 if (NILP (result)
|
|
972 && x_font_spec_matches_charset (XDEVICE (device), charset, 0,
|
|
973 font, 0, -1))
|
|
974 return font;
|
|
975
|
|
976 return result;
|
|
977 }
|
|
978
|
|
979 #endif /* MULE */
|
|
980
|
|
981
|
|
982 /************************************************************************/
|
|
983 /* initialization */
|
|
984 /************************************************************************/
|
|
985
|
|
986 void
|
|
987 syms_of_objects_x (void)
|
|
988 {
|
|
989 }
|
|
990
|
|
991 void
|
|
992 console_type_create_objects_x (void)
|
|
993 {
|
|
994 /* object methods */
|
|
995
|
|
996 CONSOLE_HAS_METHOD (x, initialize_color_instance);
|
|
997 CONSOLE_HAS_METHOD (x, print_color_instance);
|
|
998 CONSOLE_HAS_METHOD (x, finalize_color_instance);
|
|
999 CONSOLE_HAS_METHOD (x, color_instance_equal);
|
|
1000 CONSOLE_HAS_METHOD (x, color_instance_hash);
|
|
1001 CONSOLE_HAS_METHOD (x, color_instance_rgb_components);
|
|
1002 CONSOLE_HAS_METHOD (x, valid_color_name_p);
|
|
1003
|
|
1004 CONSOLE_HAS_METHOD (x, initialize_font_instance);
|
|
1005 CONSOLE_HAS_METHOD (x, mark_font_instance);
|
|
1006 CONSOLE_HAS_METHOD (x, print_font_instance);
|
|
1007 CONSOLE_HAS_METHOD (x, finalize_font_instance);
|
|
1008 CONSOLE_HAS_METHOD (x, font_instance_truename);
|
|
1009 CONSOLE_HAS_METHOD (x, font_instance_properties);
|
|
1010 CONSOLE_HAS_METHOD (x, list_fonts);
|
|
1011 #ifdef MULE
|
|
1012 CONSOLE_HAS_METHOD (x, find_charset_font);
|
|
1013 CONSOLE_HAS_METHOD (x, font_spec_matches_charset);
|
|
1014 #endif
|
|
1015 }
|
|
1016
|
|
1017 void
|
|
1018 vars_of_objects_x (void)
|
|
1019 {
|
|
1020 DEFVAR_BOOL ("x-handle-non-fully-specified-fonts",
|
|
1021 &x_handle_non_fully_specified_fonts /*
|
|
1022 If this is true then fonts which do not have all characters specified
|
|
1023 will be considered to be proportional width even if they are actually
|
|
1024 fixed-width. If this is not done then characters which are supposed to
|
|
1025 have 0 width may appear to actually have some width.
|
|
1026
|
|
1027 Note: While setting this to t guarantees correct output in all
|
|
1028 circumstances, it also causes a noticeable performance hit when using
|
|
1029 fixed-width fonts. Since most people don't use characters which could
|
|
1030 cause problems this is set to nil by default.
|
|
1031 */ );
|
|
1032 x_handle_non_fully_specified_fonts = 0;
|
|
1033 }
|
|
1034
|
|
1035 void
|
|
1036 Xatoms_of_objects_x (struct device *d)
|
|
1037 {
|
|
1038 Display *D = DEVICE_X_DISPLAY (d);
|
|
1039
|
|
1040 DEVICE_XATOM_FOUNDRY (d) = XInternAtom (D, "FOUNDRY", False);
|
|
1041 DEVICE_XATOM_FAMILY_NAME (d) = XInternAtom (D, "FAMILY_NAME", False);
|
|
1042 DEVICE_XATOM_WEIGHT_NAME (d) = XInternAtom (D, "WEIGHT_NAME", False);
|
|
1043 DEVICE_XATOM_SLANT (d) = XInternAtom (D, "SLANT", False);
|
|
1044 DEVICE_XATOM_SETWIDTH_NAME (d) = XInternAtom (D, "SETWIDTH_NAME", False);
|
|
1045 DEVICE_XATOM_ADD_STYLE_NAME (d) = XInternAtom (D, "ADD_STYLE_NAME", False);
|
|
1046 DEVICE_XATOM_PIXEL_SIZE (d) = XInternAtom (D, "PIXEL_SIZE", False);
|
|
1047 DEVICE_XATOM_POINT_SIZE (d) = XInternAtom (D, "POINT_SIZE", False);
|
|
1048 DEVICE_XATOM_RESOLUTION_X (d) = XInternAtom (D, "RESOLUTION_X", False);
|
|
1049 DEVICE_XATOM_RESOLUTION_Y (d) = XInternAtom (D, "RESOLUTION_Y", False);
|
|
1050 DEVICE_XATOM_SPACING (d) = XInternAtom (D, "SPACING", False);
|
|
1051 DEVICE_XATOM_AVERAGE_WIDTH (d) = XInternAtom (D, "AVERAGE_WIDTH", False);
|
|
1052 DEVICE_XATOM_CHARSET_REGISTRY(d) = XInternAtom (D, "CHARSET_REGISTRY",False);
|
|
1053 DEVICE_XATOM_CHARSET_ENCODING(d) = XInternAtom (D, "CHARSET_ENCODING",False);
|
|
1054 }
|