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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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39 int handle_nonfull_spec_fonts;
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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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47 available color if the colormap is full. From FSF Emacs. */
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48
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49 int
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50 allocate_nearest_color (Display *display, Colormap screen_colormap,
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51 XColor *color_def)
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52 {
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53 int status;
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54
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55 status = XAllocColor (display, screen_colormap, color_def);
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56 if (!status)
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57 {
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58 /* If we got to this point, the colormap is full, so we're
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59 going to try and get the next closest color.
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60 The algorithm used is a least-squares matching, which is
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61 what X uses for closest color matching with StaticColor visuals. */
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62
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63 XColor *cells;
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64 int no_cells;
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65 int nearest;
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66 long nearest_delta, trial_delta;
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67 int x;
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68
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69 no_cells = XDisplayCells (display, XDefaultScreen (display));
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70 cells = (XColor *) alloca (sizeof (XColor) * no_cells);
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71
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72 for (x = 0; x < no_cells; x++)
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73 cells[x].pixel = x;
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74
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75 XQueryColors (display, screen_colormap, cells, no_cells);
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76 nearest = 0;
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77 /* I'm assuming CSE so I'm not going to condense this. */
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78 nearest_delta = ((((color_def->red >> 8) - (cells[0].red >> 8))
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79 * ((color_def->red >> 8) - (cells[0].red >> 8)))
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80 +
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81 (((color_def->green >> 8) - (cells[0].green >> 8))
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82 * ((color_def->green >> 8) - (cells[0].green >> 8)))
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83 +
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84 (((color_def->blue >> 8) - (cells[0].blue >> 8))
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85 * ((color_def->blue >> 8) - (cells[0].blue >> 8))));
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86 for (x = 1; x < no_cells; x++)
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87 {
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88 trial_delta = ((((color_def->red >> 8) - (cells[x].red >> 8))
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89 * ((color_def->red >> 8) - (cells[x].red >> 8)))
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90 +
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91 (((color_def->green >> 8) - (cells[x].green >> 8))
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92 * ((color_def->green >> 8) - (cells[x].green >> 8)))
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93 +
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94 (((color_def->blue >> 8) - (cells[x].blue >> 8))
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95 * ((color_def->blue >> 8) - (cells[x].blue >> 8))));
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96 if (trial_delta < nearest_delta)
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97 {
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98 nearest = x;
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99 nearest_delta = trial_delta;
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100 }
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101 }
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102 color_def->red = cells[nearest].red;
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103 color_def->green = cells[nearest].green;
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104 color_def->blue = cells[nearest].blue;
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105 status = XAllocColor (display, screen_colormap, color_def);
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106 }
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107
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108 return status;
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109 }
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110
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111 int
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112 x_parse_nearest_color (struct device *d, XColor *color, Bufbyte *name,
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113 Bytecount len, Error_behavior errb)
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114 {
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115 Display *dpy;
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116 Screen *xs;
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117 Colormap cmap;
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118 int result;
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119
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120 dpy = DEVICE_X_DISPLAY (d);
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121 xs = DefaultScreenOfDisplay (dpy);
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122 cmap = DefaultColormapOfScreen (xs);
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123
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124 memset (color, 0, sizeof (*color));
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125 {
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126 CONST Extbyte *extname;
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127 Extcount extnamelen;
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128
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129 GET_CHARPTR_EXT_BINARY_DATA_ALLOCA (name, len, extname, extnamelen);
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130 result = XParseColor (dpy, cmap, (char *) extname, color);
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131 }
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132 if (!result)
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133 {
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134 maybe_signal_simple_error ("unrecognized color", make_string (name, len),
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135 Qcolor, errb);
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136 return 0;
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137 }
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138 result = allocate_nearest_color (dpy, cmap, color);
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139 if (!result)
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140 {
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141 maybe_signal_simple_error ("couldn't allocate color",
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142 make_string (name, len), Qcolor, errb);
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143 return 0;
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144 }
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145
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146 return 1;
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147 }
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148
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149 static int
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150 x_initialize_color_instance (struct Lisp_Color_Instance *c, Lisp_Object name,
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151 Lisp_Object device, Error_behavior errb)
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152 {
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153 XColor color;
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154 int result;
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155
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156 result = x_parse_nearest_color (XDEVICE (device), &color,
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157 string_data (XSTRING (name)),
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158 string_length (XSTRING (name)),
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159 errb);
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160
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161 if (!result)
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162 return 0;
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163
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164 /* Don't allocate the data until we're sure that we will succeed,
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165 or the finalize method may get fucked. */
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166 c->data = malloc_type (struct x_color_instance_data);
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167 COLOR_INSTANCE_X_COLOR (c) = color;
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168 return 1;
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169 }
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170
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171 static void
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172 x_print_color_instance (struct Lisp_Color_Instance *c,
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173 Lisp_Object printcharfun,
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174 int escapeflag)
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175 {
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176 char buf[100];
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177 XColor color = COLOR_INSTANCE_X_COLOR (c);
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178 sprintf (buf, " %ld=(%X,%X,%X)",
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179 color.pixel, color.red, color.green, color.blue);
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180 write_c_string (buf, printcharfun);
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181 }
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182
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183 static void
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184 x_finalize_color_instance (struct Lisp_Color_Instance *c)
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185 {
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186 if (c->data)
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187 {
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188 if (DEVICE_LIVE_P (XDEVICE (c->device)))
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189 {
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190 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (c->device));
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191
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192 XFreeColors (dpy,
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193 DefaultColormapOfScreen (DefaultScreenOfDisplay (dpy)),
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194 &COLOR_INSTANCE_X_COLOR (c).pixel, 1, 0);
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195 }
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196 xfree (c->data);
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197 c->data = 0;
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198 }
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199 }
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200
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201 /* Color instances are equal if they resolve to the same color on the
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202 screen (have the same RGB values). I imagine that
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203 "same RGV values" == "same cell in the colormap." Arguably we should
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204 be comparing their names instead. */
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205
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206 static int
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207 x_color_instance_equal (struct Lisp_Color_Instance *c1,
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208 struct Lisp_Color_Instance *c2,
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209 int depth)
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210 {
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211 XColor color1 = COLOR_INSTANCE_X_COLOR (c1);
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212 XColor color2 = COLOR_INSTANCE_X_COLOR (c2);
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213 return ((color1.red == color2.red) &&
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214 (color1.green == color2.green) &&
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215 (color1.blue == color2.blue));
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216 }
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217
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218 static unsigned long
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219 x_color_instance_hash (struct Lisp_Color_Instance *c, int depth)
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220 {
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221 XColor color = COLOR_INSTANCE_X_COLOR (c);
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222 return HASH3 (color.red, color.green, color.blue);
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223 }
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224
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225 static Lisp_Object
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226 x_color_instance_rgb_components (struct Lisp_Color_Instance *c)
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227 {
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228 XColor color = COLOR_INSTANCE_X_COLOR (c);
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229 return (list3 (make_int (color.red),
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230 make_int (color.green),
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231 make_int (color.blue)));
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232 }
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233
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234 static int
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235 x_valid_color_name_p (struct device *d, Lisp_Object color)
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236 {
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237 XColor c;
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238 Display *dpy = DEVICE_X_DISPLAY (d);
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239 CONST char *extname;
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240
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241 GET_C_STRING_CTEXT_DATA_ALLOCA (color, extname);
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242
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243 return XParseColor (dpy,
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244 DefaultColormapOfScreen (DefaultScreenOfDisplay (dpy)),
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245 extname, &c);
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246 }
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247
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248
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249 /************************************************************************/
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250 /* font instances */
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251 /************************************************************************/
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252
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253 static int
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254 x_initialize_font_instance (struct Lisp_Font_Instance *f, Lisp_Object name,
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255 Lisp_Object device, Error_behavior errb)
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256 {
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257 Display *dpy;
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258 XFontStruct *xf;
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259 CONST char *extname;
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260
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261 dpy = DEVICE_X_DISPLAY (XDEVICE (device));
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262 GET_C_STRING_CTEXT_DATA_ALLOCA (f->name, extname);
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263 xf = XLoadQueryFont (dpy, extname);
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264
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265 if (!xf)
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266 {
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267 maybe_signal_simple_error ("couldn't load font", f->name,
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268 Qfont, errb);
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269 return 0;
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270 }
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271
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272 if (!xf->max_bounds.width)
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273 {
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274 /* yes, this has been known to happen. */
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275 XFreeFont (dpy, xf);
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276 maybe_signal_simple_error ("X font is too small", f->name,
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277 Qfont, errb);
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278 return 0;
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279 }
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280
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281 /* Don't allocate the data until we're sure that we will succeed,
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282 or the finalize method may get fucked. */
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283 f->data = malloc_type (struct x_font_instance_data);
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284 FONT_INSTANCE_X_TRUENAME (f) = Qnil;
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285 FONT_INSTANCE_X_FONT (f) = xf;
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286 f->ascent = xf->ascent;
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287 f->descent = xf->descent;
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288 f->height = xf->ascent + xf->descent;
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289 {
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290 unsigned int def_char = xf->default_char;
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291 int byte1, byte2;
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292
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293 once_more:
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294 byte1 = def_char >> 8;
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295 byte2 = def_char & 0xFF;
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296
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297 if (xf->per_char)
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298 {
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299 /* Old versions of the R5 font server have garbage (>63k) as
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300 def_char. 'n' might not be a valid character. */
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301 if (byte1 < xf->min_byte1 || byte1 > xf->max_byte1 ||
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302 byte2 < xf->min_char_or_byte2 || byte2 > xf->max_char_or_byte2)
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303 f->width = 0;
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304 else
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305 f->width = xf->per_char[(byte1 - xf->min_byte1) *
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306 (xf->max_char_or_byte2 -
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307 xf->min_char_or_byte2 + 1) +
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308 (byte2 - xf->min_char_or_byte2)].width;
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309 }
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310 else
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311 f->width = xf->max_bounds.width;
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312
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313 /* Some fonts have a default char whose width is 0. This is no good.
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314 If that's the case, first try 'n' as the default char, and if n has
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315 0 width too (unlikely) then just use the max width. */
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316 if (f->width == 0)
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317 {
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318 if (def_char == 'n')
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319 f->width = xf->max_bounds.width;
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320 else
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321 {
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322 def_char = 'n';
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323 goto once_more;
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324 }
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325 }
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326 }
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327 /* If all characters don't exist then there could potentially be
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328 0-width characters lurking out there. Not setting this flag
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329 trips an optimization that would make them appear to have width
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330 to redisplay. This is bad. So we set it if not all characters
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331 have the same width or if not all characters are defined.
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332 */
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333 /* #### This sucks. There is a measurable performance increase
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334 when using proportional width fonts if this flag is not set.
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335 Unfortunately so many of the fucking X fonts are not fully
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336 defined that we could almost just get rid of this damn flag and
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337 make it an assertion. */
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338 f->proportional_p = (xf->min_bounds.width != xf->max_bounds.width ||
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339 (handle_nonfull_spec_fonts &&
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340 !xf->all_chars_exist));
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341
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342 return 1;
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343 }
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344
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345 static void
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346 x_mark_font_instance (struct Lisp_Font_Instance *f,
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347 void (*markobj) (Lisp_Object))
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348 {
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349 ((markobj) (FONT_INSTANCE_X_TRUENAME (f)));
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350 }
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351
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352 static void
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353 x_print_font_instance (struct Lisp_Font_Instance *f,
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354 Lisp_Object printcharfun,
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355 int escapeflag)
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356 {
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357 char buf[200];
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358 sprintf (buf, " 0x%lx", (unsigned long) FONT_INSTANCE_X_FONT (f)->fid);
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359 write_c_string (buf, printcharfun);
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360 }
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361
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362 static void
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363 x_finalize_font_instance (struct Lisp_Font_Instance *f)
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364 {
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365
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366 if (f->data)
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367 {
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368 if (DEVICE_LIVE_P (XDEVICE (f->device)))
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369 {
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370 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (f->device));
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371
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372 XFreeFont (dpy, FONT_INSTANCE_X_FONT (f));
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373 }
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374 xfree (f->data);
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375 f->data = 0;
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376 }
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377 }
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378
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379 /* Determining the truename of a font is hard. (Big surprise.)
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380
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381 By "truename" we mean an XLFD-form name which contains no wildcards, yet
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382 which resolves to *exactly* the same font as the one which we already have
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383 the (probably wildcarded) name and `XFontStruct' of.
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384
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385 One might think that the first font returned by XListFonts would be the one
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386 that XOpenFont would pick. Apparently this is the case on some servers,
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387 but not on others. It would seem not to be specified.
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388
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389 The MIT R5 server sometimes appears to be picking the lexicographically
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390 smallest font which matches the name (thus picking "adobe" fonts before
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391 "bitstream" fonts even if the bitstream fonts are earlier in the path, and
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392 also picking 100dpi adobe fonts over 75dpi adobe fonts even though the
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393 75dpi are in the path earlier) but sometimes appears to be doing something
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394 else entirely (for example, removing the bitsream fonts from the path will
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395 cause the 75dpi adobe fonts to be used instead of the100dpi, even though
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396 their relative positions in the path (and their names!) have not changed).
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397
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398 The documentation for XSetFontPath() seems to indicate that the order of
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399 entries in the font path means something, but it's pretty noncommital about
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400 it, and the spirit of the law is apparently not being obeyed...
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401
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402 All the fonts I've seen have a property named `FONT' which contains the
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403 truename of the font. However, there are two problems with using this: the
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404 first is that the X Protocol Document is quite explicit that all properties
|
|
|
405 are optional, so we can't depend on it being there. The second is that
|
|
|
406 it's concievable that this alleged truename isn't actually accessible as a
|
|
|
407 font, due to some difference of opinion between the font designers and
|
|
|
408 whoever installed the font on the system.
|
|
|
409
|
|
|
410 So, our first attempt is to look for a FONT property, and then verify that
|
|
|
411 the name there is a valid name by running XListFonts on it. There's still
|
|
|
412 the potential that this could be true but we could still be being lied to,
|
|
|
413 but that seems pretty remote.
|
|
|
414
|
|
|
415 Late breaking news: I've gotten reports that SunOS 4.1.3U1
|
|
|
416 with OpenWound 3.0 has a font whose truename is really
|
|
|
417 "-Adobe-Courier-Medium-R-Normal--12-120-75-75-M-70-ISO8859-1"
|
|
|
418 but whose FONT property contains "Courier".
|
|
|
419
|
|
|
420 So we disbelieve the FONT property unless it begins with a dash and
|
|
|
421 is more than 30 characters long. X Windows: The defacto substandard.
|
|
|
422 X Windows: Complex nonsolutions to simple nonproblems. X Windows:
|
|
|
423 Live the nightmare.
|
|
|
424
|
|
|
425 If the FONT property doesn't exist, then we try and construct an XLFD name
|
|
|
426 out of the other font properties (FOUNDRY, FAMILY_NAME, WEIGHT_NAME, etc).
|
|
|
427 This is necessary at least for some versions of OpenWound. But who knows
|
|
|
428 what the future will bring.
|
|
|
429
|
|
|
430 If that doesn't work, then we use XListFonts and either take the first font
|
|
|
431 (which I think is the most sensible thing) or we find the lexicographically
|
|
|
432 least, depending on whether the preprocessor constant `XOPENFONT_SORTS' is
|
|
|
433 defined. This sucks because the two behaviors are a property of the server
|
|
|
434 being used, not the architecture on which emacs has been compiled. Also,
|
|
|
435 as I described above, sorting isn't ALWAYS what the server does. Really it
|
|
|
436 does something seemingly random. There is no reliable way to win if the
|
|
|
437 FONT property isn't present.
|
|
|
438
|
|
|
439 Another possibility which I haven't bothered to implement would be to map
|
|
|
440 over all of the matching fonts and find the first one that has the same
|
|
|
441 character metrics as the font we already have loaded. Even if this didn't
|
|
|
442 return exactly the same font, it would at least return one whose characters
|
|
|
443 were the same sizes, which would probably be good enough.
|
|
|
444
|
|
|
445 More late-breaking news: on RS/6000 AIX 3.2.4, the expression
|
|
|
446 XLoadQueryFont (dpy, "-*-Fixed-Medium-R-*-*-*-130-75-75-*-*-ISO8859-1")
|
|
|
447 actually returns the font
|
|
|
448 -Misc-Fixed-Medium-R-Normal--13-120-75-75-C-80-ISO8859-1
|
|
|
449 which is crazy, because that font doesn't even match that pattern! It is
|
|
|
450 also not included in the output produced by `xlsfonts' with that pattern.
|
|
|
451
|
|
|
452 So this is yet another example of XListFonts() and XOpenFont() using
|
|
|
453 completely different algorithms. This, however, is a goofier example of
|
|
|
454 this bug, because in this case, it's not just the search order that is
|
|
|
455 different -- the sets don't even intersect.
|
|
|
456
|
|
|
457 If anyone has any better ideas how to do this, or any insights on what it is
|
|
|
458 that the various servers are actually doing, please let me know! -- jwz. */
|
|
|
459
|
|
|
460 static int
|
|
|
461 valid_x_font_name_p (Display *dpy, char *name)
|
|
|
462 {
|
|
|
463 /* Maybe this should be implemented by callign XLoadFont and trapping
|
|
|
464 the error. That would be a lot of work, and wasteful as hell, but
|
|
|
465 might be more correct.
|
|
|
466 */
|
|
|
467 int nnames = 0;
|
|
|
468 char **names = 0;
|
|
|
469 if (! name)
|
|
|
470 return 0;
|
|
|
471 names = XListFonts (dpy, name, 1, &nnames);
|
|
|
472 if (names)
|
|
|
473 XFreeFontNames (names);
|
|
|
474 return (nnames != 0);
|
|
|
475 }
|
|
|
476
|
|
|
477 static char *
|
|
|
478 truename_via_FONT_prop (Display *dpy, XFontStruct *font)
|
|
|
479 {
|
|
|
480 unsigned long value = 0;
|
|
|
481 char *result = 0;
|
|
|
482 if (XGetFontProperty (font, XA_FONT, &value))
|
|
|
483 result = XGetAtomName (dpy, value);
|
|
|
484 /* result is now 0, or the string value of the FONT property. */
|
|
|
485 if (result)
|
|
|
486 {
|
|
|
487 /* Verify that result is an XLFD name (roughly...) */
|
|
|
488 if (result [0] != '-' || strlen (result) < (unsigned int) 30)
|
|
|
489 {
|
|
|
490 XFree (result);
|
|
|
491 result = 0;
|
|
|
492 }
|
|
|
493 }
|
|
|
494 return result; /* this must be freed by caller if non-0 */
|
|
|
495 }
|
|
|
496
|
|
|
497 static char *
|
|
|
498 truename_via_random_props (Display *dpy, XFontStruct *font)
|
|
|
499 {
|
|
|
500 struct device *d = get_device_from_display (dpy);
|
|
|
501 unsigned long value = 0;
|
|
|
502 char *foundry, *family, *weight, *slant, *setwidth, *add_style;
|
|
|
503 unsigned long pixel, point, res_x, res_y;
|
|
|
504 char *spacing;
|
|
|
505 unsigned long avg_width;
|
|
|
506 char *registry, *encoding;
|
|
|
507 char composed_name [2048];
|
|
|
508 int ok = 0;
|
|
|
509 char *result;
|
|
|
510
|
|
|
511 #define get_string(atom,var) \
|
|
|
512 if (XGetFontProperty (font, (atom), &value)) \
|
|
|
513 var = XGetAtomName (dpy, value); \
|
|
|
514 else { \
|
|
|
515 var = 0; \
|
|
|
516 goto FAIL; }
|
|
|
517 #define get_number(atom,var) \
|
|
|
518 if (!XGetFontProperty (font, (atom), &var) || \
|
|
|
519 var > 999) \
|
|
|
520 goto FAIL;
|
|
|
521
|
|
|
522 foundry = family = weight = slant = setwidth = 0;
|
|
|
523 add_style = spacing = registry = encoding = 0;
|
|
|
524
|
|
|
525 get_string (DEVICE_XATOM_FOUNDRY (d), foundry);
|
|
|
526 get_string (DEVICE_XATOM_FAMILY_NAME (d), family);
|
|
|
527 get_string (DEVICE_XATOM_WEIGHT_NAME (d), weight);
|
|
|
528 get_string (DEVICE_XATOM_SLANT (d), slant);
|
|
|
529 get_string (DEVICE_XATOM_SETWIDTH_NAME (d), setwidth);
|
|
|
530 get_string (DEVICE_XATOM_ADD_STYLE_NAME (d), add_style);
|
|
|
531 get_number (DEVICE_XATOM_PIXEL_SIZE (d), pixel);
|
|
|
532 get_number (DEVICE_XATOM_POINT_SIZE (d), point);
|
|
|
533 get_number (DEVICE_XATOM_RESOLUTION_X (d), res_x);
|
|
|
534 get_number (DEVICE_XATOM_RESOLUTION_Y (d), res_y);
|
|
|
535 get_string (DEVICE_XATOM_SPACING (d), spacing);
|
|
|
536 get_number (DEVICE_XATOM_AVERAGE_WIDTH (d), avg_width);
|
|
|
537 get_string (DEVICE_XATOM_CHARSET_REGISTRY (d), registry);
|
|
|
538 get_string (DEVICE_XATOM_CHARSET_ENCODING (d), encoding);
|
|
|
539 #undef get_number
|
|
|
540 #undef get_string
|
|
|
541
|
|
|
542 sprintf (composed_name,
|
|
|
543 "-%s-%s-%s-%s-%s-%s-%ld-%ld-%ld-%ld-%s-%ld-%s-%s",
|
|
|
544 foundry, family, weight, slant, setwidth, add_style, pixel,
|
|
|
545 point, res_x, res_y, spacing, avg_width, registry, encoding);
|
|
|
546 ok = 1;
|
|
|
547
|
|
|
548 FAIL:
|
|
|
549 if (ok)
|
|
|
550 {
|
|
|
551 int L = strlen (composed_name) + 1;
|
|
|
552 result = xmalloc (L);
|
|
|
553 strncpy (result, composed_name, L);
|
|
|
554 }
|
|
|
555 else
|
|
|
556 result = 0;
|
|
|
557
|
|
|
558 if (foundry) XFree (foundry);
|
|
|
559 if (family) XFree (family);
|
|
|
560 if (weight) XFree (weight);
|
|
|
561 if (slant) XFree (slant);
|
|
|
562 if (setwidth) XFree (setwidth);
|
|
|
563 if (add_style) XFree (add_style);
|
|
|
564 if (spacing) XFree (spacing);
|
|
|
565 if (registry) XFree (registry);
|
|
|
566 if (encoding) XFree (encoding);
|
|
|
567
|
|
|
568 return result;
|
|
|
569 }
|
|
|
570
|
|
|
571 /* Unbounded, for sufficiently small values of infinity... */
|
|
|
572 #define MAX_FONT_COUNT 5000
|
|
|
573
|
|
|
574 static char *
|
|
|
575 truename_via_XListFonts (Display *dpy, char *font_name)
|
|
|
576 {
|
|
|
577 char *result = 0;
|
|
|
578 char **names;
|
|
|
579 int count = 0;
|
|
|
580
|
|
|
581 #ifndef XOPENFONT_SORTS
|
|
|
582 /* In a sensible world, the first font returned by XListFonts()
|
|
|
583 would be the font that XOpenFont() would use. */
|
|
|
584 names = XListFonts (dpy, font_name, 1, &count);
|
|
|
585 if (count) result = names [0];
|
|
|
586 #else
|
|
|
587 /* But the world I live in is much more perverse. */
|
|
|
588 names = XListFonts (dpy, font_name, MAX_FONT_COUNT, &count);
|
|
|
589 while (count--)
|
|
|
590 /* If names[count] is lexicographically less than result, use it.
|
|
|
591 (#### Should we be comparing case-insensitively?) */
|
|
|
592 if (result == 0 || (strcmp (result, names [count]) < 0))
|
|
|
593 result = names [count];
|
|
|
594 #endif
|
|
|
595
|
|
|
596 if (result)
|
|
|
597 result = xstrdup (result);
|
|
|
598 if (names)
|
|
|
599 XFreeFontNames (names);
|
|
|
600
|
|
|
601 return result; /* this must be freed by caller if non-0 */
|
|
|
602 }
|
|
|
603
|
|
|
604 static Lisp_Object
|
|
|
605 x_font_truename (Display *dpy, char *name, XFontStruct *font)
|
|
|
606 {
|
|
|
607 char *truename_FONT = 0;
|
|
|
608 char *truename_random = 0;
|
|
|
609 char *truename = 0;
|
|
|
610
|
|
|
611 /* The search order is:
|
|
|
612 - if FONT property exists, and is a valid name, return it.
|
|
|
613 - if the other props exist, and add up to a valid name, return it.
|
|
|
614 - if we find a matching name with XListFonts, return it.
|
|
|
615 - if FONT property exists, return it regardless.
|
|
|
616 - if other props exist, return the resultant name regardless.
|
|
|
617 - else return 0.
|
|
|
618 */
|
|
|
619
|
|
|
620 truename = truename_FONT = truename_via_FONT_prop (dpy, font);
|
|
|
621 if (truename && !valid_x_font_name_p (dpy, truename))
|
|
|
622 truename = 0;
|
|
|
623 if (!truename)
|
|
|
624 truename = truename_random = truename_via_random_props (dpy, font);
|
|
|
625 if (truename && !valid_x_font_name_p (dpy, truename))
|
|
|
626 truename = 0;
|
|
|
627 if (!truename && name)
|
|
|
628 truename = truename_via_XListFonts (dpy, name);
|
|
|
629
|
|
|
630 if (!truename)
|
|
|
631 {
|
|
|
632 /* Gag - we weren't able to find a seemingly-valid truename.
|
|
|
633 Well, maybe we're on one of those braindead systems where
|
|
|
634 XListFonts() and XLoadFont() are in violent disagreement.
|
|
|
635 If we were able to compute a truename, try using that even
|
|
|
636 if evidence suggests that it's not a valid name - because
|
|
|
637 maybe it is, really, and that's better than nothing.
|
|
|
638 X Windows: You'll envy the dead.
|
|
|
639 */
|
|
|
640 if (truename_FONT)
|
|
|
641 truename = truename_FONT;
|
|
|
642 else if (truename_random)
|
|
|
643 truename = truename_random;
|
|
|
644 }
|
|
|
645
|
|
|
646 /* One or both of these are not being used - free them. */
|
|
|
647 if (truename_FONT && truename_FONT != truename)
|
|
|
648 XFree (truename_FONT);
|
|
|
649 if (truename_random && truename_random != truename)
|
|
|
650 XFree (truename_random);
|
|
|
651
|
|
|
652 if (truename)
|
|
|
653 {
|
|
|
654 Lisp_Object result = build_string (truename);
|
|
|
655 xfree (truename);
|
|
|
656 return result;
|
|
|
657 }
|
|
|
658 else
|
|
|
659 return Qnil;
|
|
|
660 }
|
|
|
661
|
|
|
662 static Lisp_Object
|
|
|
663 x_font_instance_truename (struct Lisp_Font_Instance *f, Error_behavior errb)
|
|
|
664 {
|
|
|
665 struct device *d = XDEVICE (f->device);
|
|
|
666
|
|
|
667 if (NILP (FONT_INSTANCE_X_TRUENAME (f)))
|
|
|
668 {
|
|
|
669 Display *dpy = DEVICE_X_DISPLAY (d);
|
|
|
670 char *name =
|
|
|
671 (char *) string_data (XSTRING (f->name));
|
|
|
672 {
|
|
|
673 FONT_INSTANCE_X_TRUENAME (f) =
|
|
|
674 x_font_truename (dpy, name, FONT_INSTANCE_X_FONT (f));
|
|
|
675 }
|
|
|
676 if (NILP (FONT_INSTANCE_X_TRUENAME (f)))
|
|
|
677 {
|
|
|
678 Lisp_Object font_instance = Qnil;
|
|
|
679 XSETFONT_INSTANCE (font_instance, f);
|
|
|
680
|
|
|
681 maybe_signal_simple_error ("couldn't determine font truename",
|
|
|
682 font_instance, Qfont, errb);
|
|
|
683 /* Ok, just this once, return the font name as the truename.
|
|
|
684 (This is only used by Fequal() right now.) */
|
|
|
685 return f->name;
|
|
|
686 }
|
|
|
687 }
|
|
|
688 return (FONT_INSTANCE_X_TRUENAME (f));
|
|
|
689 }
|
|
|
690
|
|
|
691 static Lisp_Object
|
|
|
692 x_font_instance_properties (struct Lisp_Font_Instance *f)
|
|
|
693 {
|
|
|
694 struct device *d = XDEVICE (f->device);
|
|
|
695 int i;
|
|
|
696 Lisp_Object result = Qnil;
|
|
|
697 XFontProp *props;
|
|
|
698 Display *dpy;
|
|
|
699
|
|
|
700 dpy = DEVICE_X_DISPLAY (d);
|
|
|
701 props = FONT_INSTANCE_X_FONT (f)->properties;
|
|
|
702 for (i = FONT_INSTANCE_X_FONT (f)->n_properties - 1; i >= 0; i--)
|
|
|
703 {
|
|
|
704 char *name_str = 0;
|
|
|
705 char *val_str = 0;
|
|
|
706 Lisp_Object name, value;
|
|
|
707 Atom atom = props [i].name;
|
|
|
708 name_str = XGetAtomName (dpy, atom);
|
|
|
709 name = (name_str ? intern (name_str) : Qnil);
|
|
|
710 if (name_str &&
|
|
|
711 (atom == XA_FONT ||
|
|
|
712 atom == DEVICE_XATOM_FOUNDRY (d) ||
|
|
|
713 atom == DEVICE_XATOM_FAMILY_NAME (d) ||
|
|
|
714 atom == DEVICE_XATOM_WEIGHT_NAME (d) ||
|
|
|
715 atom == DEVICE_XATOM_SLANT (d) ||
|
|
|
716 atom == DEVICE_XATOM_SETWIDTH_NAME (d) ||
|
|
|
717 atom == DEVICE_XATOM_ADD_STYLE_NAME (d) ||
|
|
|
718 atom == DEVICE_XATOM_SPACING (d) ||
|
|
|
719 atom == DEVICE_XATOM_CHARSET_REGISTRY (d) ||
|
|
|
720 atom == DEVICE_XATOM_CHARSET_ENCODING (d) ||
|
|
|
721 !strcmp (name_str, "CHARSET_COLLECTIONS") ||
|
|
|
722 !strcmp (name_str, "FONTNAME_REGISTRY") ||
|
|
|
723 !strcmp (name_str, "CLASSIFICATION") ||
|
|
|
724 !strcmp (name_str, "COPYRIGHT") ||
|
|
|
725 !strcmp (name_str, "DEVICE_FONT_NAME") ||
|
|
|
726 !strcmp (name_str, "FULL_NAME") ||
|
|
|
727 !strcmp (name_str, "MONOSPACED") ||
|
|
|
728 !strcmp (name_str, "QUALITY") ||
|
|
|
729 !strcmp (name_str, "RELATIVE_SET") ||
|
|
|
730 !strcmp (name_str, "RELATIVE_WEIGHT") ||
|
|
|
731 !strcmp (name_str, "STYLE")))
|
|
|
732 {
|
|
|
733 val_str = XGetAtomName (dpy, props [i].card32);
|
|
|
734 value = (val_str ? build_string (val_str) : Qnil);
|
|
|
735 }
|
|
|
736 else
|
|
|
737 value = make_int (props [i].card32);
|
|
|
738 if (name_str) XFree (name_str);
|
|
|
739 result = Fcons (Fcons (name, value), result);
|
|
|
740 }
|
|
|
741 return result;
|
|
|
742 }
|
|
|
743
|
|
|
744 static Lisp_Object
|
|
|
745 x_list_fonts (Lisp_Object pattern, Lisp_Object device)
|
|
|
746 {
|
|
|
747 char **names;
|
|
|
748 int count = 0;
|
|
|
749 Lisp_Object result = Qnil;
|
|
|
750 CONST char *patternext;
|
|
|
751
|
|
|
752 GET_C_STRING_BINARY_DATA_ALLOCA (pattern, patternext);
|
|
|
753
|
|
|
754 names = XListFonts (DEVICE_X_DISPLAY (XDEVICE (device)),
|
|
|
755 patternext, MAX_FONT_COUNT, &count);
|
|
|
756 while (count--)
|
|
|
757 result = Fcons (build_ext_string (names [count], FORMAT_BINARY), result);
|
|
|
758 if (names)
|
|
|
759 XFreeFontNames (names);
|
|
|
760 return result;
|
|
|
761 }
|
|
|
762
|
|
|
763
|
|
|
764 /************************************************************************/
|
|
|
765 /* initialization */
|
|
|
766 /************************************************************************/
|
|
|
767
|
|
|
768 void
|
|
|
769 syms_of_objects_x (void)
|
|
|
770 {
|
|
|
771 }
|
|
|
772
|
|
|
773 void
|
|
|
774 console_type_create_objects_x (void)
|
|
|
775 {
|
|
|
776 /* object methods */
|
|
|
777
|
|
|
778 CONSOLE_HAS_METHOD (x, initialize_color_instance);
|
|
|
779 CONSOLE_HAS_METHOD (x, print_color_instance);
|
|
|
780 CONSOLE_HAS_METHOD (x, finalize_color_instance);
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781 CONSOLE_HAS_METHOD (x, color_instance_equal);
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782 CONSOLE_HAS_METHOD (x, color_instance_hash);
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783 CONSOLE_HAS_METHOD (x, color_instance_rgb_components);
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784 CONSOLE_HAS_METHOD (x, valid_color_name_p);
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785
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786 CONSOLE_HAS_METHOD (x, initialize_font_instance);
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787 CONSOLE_HAS_METHOD (x, mark_font_instance);
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788 CONSOLE_HAS_METHOD (x, print_font_instance);
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789 CONSOLE_HAS_METHOD (x, finalize_font_instance);
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790 CONSOLE_HAS_METHOD (x, font_instance_truename);
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791 CONSOLE_HAS_METHOD (x, font_instance_properties);
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792 CONSOLE_HAS_METHOD (x, list_fonts);
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793 }
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794
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795 void
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796 vars_of_objects_x (void)
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797 {
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798 DEFVAR_BOOL ("x-handle-non-fully-specified-fonts",&handle_nonfull_spec_fonts /*
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799 If this is true then fonts which do not have all characters specified
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800 will be considered to be proportional width even if they are actually
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801 fixed-width. If this is not done then characters which are supposed to
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802 have 0 width may appear to actually have some width.
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803
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804 Note: While setting this to t guarantees correct output in all
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805 circumstances, it also causes a noticeable performance hit when using
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806 fixed-width fonts. Since most people don't use characters which could
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807 cause problems this is set to nil by default.
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808 */ );
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809 handle_nonfull_spec_fonts = 0;
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810 }
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811
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812
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813 void
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814 Xatoms_of_objects_x (struct device *d)
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815 {
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816 #define ATOM(x) XInternAtom (DEVICE_X_DISPLAY (d), (x), False)
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817
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818 DEVICE_XATOM_FOUNDRY (d) = ATOM ("FOUNDRY");
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819 DEVICE_XATOM_FAMILY_NAME (d) = ATOM ("FAMILY_NAME");
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820 DEVICE_XATOM_WEIGHT_NAME (d) = ATOM ("WEIGHT_NAME");
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821 DEVICE_XATOM_SLANT (d) = ATOM ("SLANT");
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822 DEVICE_XATOM_SETWIDTH_NAME (d) = ATOM ("SETWIDTH_NAME");
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823 DEVICE_XATOM_ADD_STYLE_NAME (d) = ATOM ("ADD_STYLE_NAME");
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824 DEVICE_XATOM_PIXEL_SIZE (d) = ATOM ("PIXEL_SIZE");
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825 DEVICE_XATOM_POINT_SIZE (d) = ATOM ("POINT_SIZE");
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826 DEVICE_XATOM_RESOLUTION_X (d) = ATOM ("RESOLUTION_X");
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827 DEVICE_XATOM_RESOLUTION_Y (d) = ATOM ("RESOLUTION_Y");
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828 DEVICE_XATOM_SPACING (d) = ATOM ("SPACING");
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829 DEVICE_XATOM_AVERAGE_WIDTH (d) = ATOM ("AVERAGE_WIDTH");
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830 DEVICE_XATOM_CHARSET_REGISTRY (d) = ATOM ("CHARSET_REGISTRY");
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831 DEVICE_XATOM_CHARSET_ENCODING (d) = ATOM ("CHARSET_ENCODING");
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832 }
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