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462
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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 /* Gtk version by William Perry */
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29
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30 #include <config.h>
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31 #include "lisp.h"
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32
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33 #include "console-gtk.h"
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34 #include "objects-gtk.h"
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35
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36 #include "buffer.h"
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37 #include "device.h"
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38 #include "insdel.h"
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39
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40 /* sigh */
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41 #include <gdk/gdkx.h>
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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 Gdk takes care of all this behind the scenes, so we don't need to
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56 worry about it.
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57
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58 Return value is 1 for normal success, 2 for nearest color success,
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59 3 for Non-deallocable sucess. */
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60 int
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61 allocate_nearest_color (GdkColormap *colormap, GdkVisual *visual,
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62 GdkColor *color_def)
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63 {
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64 int rc;
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65
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66 rc = gdk_colormap_alloc_color (colormap, color_def, FALSE, TRUE);
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67
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68 if (rc == TRUE)
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69 return (1);
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70
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71 return (0);
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72 }
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73
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74 int
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867
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75 gtk_parse_nearest_color (struct device *d, GdkColor *color, Ibyte *name,
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578
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76 Bytecount len, Error_Behavior errb)
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462
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77 {
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78 GdkColormap *cmap;
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79 GdkVisual *visual;
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80 int result;
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81
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82 cmap = DEVICE_GTK_COLORMAP(d);
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83 visual = DEVICE_GTK_VISUAL (d);
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84
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85 xzero (*color);
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86 {
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87 const Extbyte *extname;
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665
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88 Bytecount extnamelen;
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462
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89
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90 TO_EXTERNAL_FORMAT (DATA, (name, len), ALLOCA, (extname, extnamelen), Qbinary);
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91
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92 result = gdk_color_parse (extname, color);
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93 }
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94
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95 if (result == FALSE)
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96 {
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563
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97 maybe_invalid_argument ("unrecognized color", make_string (name, len),
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98 Qcolor, errb);
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462
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99 return 0;
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100 }
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101 result = allocate_nearest_color (cmap, visual, color);
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102 if (!result)
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103 {
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563
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104 maybe_signal_error (Qgui_error, "couldn't allocate color",
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105 make_string (name, len), Qcolor, errb);
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462
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106 return 0;
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107 }
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108
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109 return result;
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110 }
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111
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112 static int
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113 gtk_initialize_color_instance (struct Lisp_Color_Instance *c, Lisp_Object name,
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578
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114 Lisp_Object device, Error_Behavior errb)
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462
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115 {
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116 GdkColor color;
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117 int result;
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118
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119 result = gtk_parse_nearest_color (XDEVICE (device), &color,
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120 XSTRING_DATA (name),
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121 XSTRING_LENGTH (name),
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122 errb);
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123
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124 if (!result)
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125 return 0;
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126
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127 /* Don't allocate the data until we're sure that we will succeed,
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128 or the finalize method may get fucked. */
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129 c->data = xnew (struct gtk_color_instance_data);
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130 if (result == 3)
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131 COLOR_INSTANCE_GTK_DEALLOC (c) = 0;
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132 else
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133 COLOR_INSTANCE_GTK_DEALLOC (c) = 1;
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134 COLOR_INSTANCE_GTK_COLOR (c) = gdk_color_copy (&color);
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135 return 1;
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136 }
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137
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138 static void
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139 gtk_print_color_instance (struct Lisp_Color_Instance *c,
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140 Lisp_Object printcharfun,
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141 int escapeflag)
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142 {
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143 GdkColor *color = COLOR_INSTANCE_GTK_COLOR (c);
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800
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144 write_fmt_string (printcharfun, " %ld=(%X,%X,%X)",
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145 color->pixel, color->red, color->green, color->blue);
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462
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146 }
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147
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148 static void
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149 gtk_finalize_color_instance (struct Lisp_Color_Instance *c)
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150 {
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151 if (c->data)
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152 {
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153 if (DEVICE_LIVE_P (XDEVICE (c->device)))
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154 {
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155 if (COLOR_INSTANCE_GTK_DEALLOC (c))
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156 {
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157 gdk_colormap_free_colors (DEVICE_GTK_COLORMAP (XDEVICE (c->device)),
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158 COLOR_INSTANCE_GTK_COLOR (c), 1);
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159 }
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160 gdk_color_free (COLOR_INSTANCE_GTK_COLOR (c));
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161 }
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162 xfree (c->data);
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163 c->data = 0;
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164 }
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165 }
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166
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167 /* Color instances are equal if they resolve to the same color on the
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168 screen (have the same RGB values). I imagine that
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169 "same RGB values" == "same cell in the colormap." Arguably we should
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170 be comparing their names or pixel values instead. */
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171
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172 static int
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173 gtk_color_instance_equal (struct Lisp_Color_Instance *c1,
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174 struct Lisp_Color_Instance *c2,
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175 int depth)
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176 {
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177 return (gdk_color_equal (COLOR_INSTANCE_GTK_COLOR (c1),
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178 COLOR_INSTANCE_GTK_COLOR (c2)));
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179 }
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180
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181 static unsigned long
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182 gtk_color_instance_hash (struct Lisp_Color_Instance *c, int depth)
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183 {
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184 return (gdk_color_hash (COLOR_INSTANCE_GTK_COLOR (c), NULL));
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185 }
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186
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187 static Lisp_Object
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188 gtk_color_instance_rgb_components (struct Lisp_Color_Instance *c)
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189 {
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190 GdkColor *color = COLOR_INSTANCE_GTK_COLOR (c);
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191 return (list3 (make_int (color->red),
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192 make_int (color->green),
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193 make_int (color->blue)));
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194 }
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195
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196 static int
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197 gtk_valid_color_name_p (struct device *d, Lisp_Object color)
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198 {
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199 GdkColor c;
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200 const char *extname;
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201
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202 TO_EXTERNAL_FORMAT (LISP_STRING, color, C_STRING_ALLOCA, extname, Qctext);
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203
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204 if (gdk_color_parse (extname, &c) != TRUE)
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205 return(0);
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206 return (1);
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207 }
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208
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209
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210 /************************************************************************/
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211 /* font instances */
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212 /************************************************************************/
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213
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214 static int
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215 gtk_initialize_font_instance (struct Lisp_Font_Instance *f, Lisp_Object name,
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578
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216 Lisp_Object device, Error_Behavior errb)
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462
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217 {
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218 GdkFont *gf;
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219 XFontStruct *xf;
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220 const char *extname;
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221
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222 TO_EXTERNAL_FORMAT (LISP_STRING, f->name, C_STRING_ALLOCA, extname, Qctext);
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223
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224 gf = gdk_font_load (extname);
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225
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226 if (!gf)
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227 {
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563
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228 maybe_signal_error (Qgui_error, "couldn't load font", f->name,
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229 Qfont, errb);
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462
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230 return 0;
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231 }
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232
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233 xf = GDK_FONT_XFONT (gf);
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234
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235 /* Don't allocate the data until we're sure that we will succeed,
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236 or the finalize method may get fucked. */
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237 f->data = xnew (struct gtk_font_instance_data);
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238 FONT_INSTANCE_GTK_TRUENAME (f) = Qnil;
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239 FONT_INSTANCE_GTK_FONT (f) = gf;
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240 f->ascent = gf->ascent;
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241 f->descent = gf->descent;
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242 f->height = gf->ascent + gf->descent;
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243
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244 /* Now lets figure out the width of the font */
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245 {
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246 /* following change suggested by Ted Phelps <phelps@dstc.edu.au> */
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247 unsigned int def_char = 'n'; /*xf->default_char;*/
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248 unsigned int byte1, byte2;
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249
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250 once_more:
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251 byte1 = def_char >> 8;
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252 byte2 = def_char & 0xFF;
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253
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254 if (xf->per_char)
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255 {
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256 /* Old versions of the R5 font server have garbage (>63k) as
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257 def_char. 'n' might not be a valid character. */
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258 if (byte1 < xf->min_byte1 ||
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259 byte1 > xf->max_byte1 ||
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260 byte2 < xf->min_char_or_byte2 ||
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261 byte2 > xf->max_char_or_byte2)
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262 f->width = 0;
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263 else
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264 f->width = xf->per_char[(byte1 - xf->min_byte1) *
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265 (xf->max_char_or_byte2 -
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266 xf->min_char_or_byte2 + 1) +
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267 (byte2 - xf->min_char_or_byte2)].width;
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268 }
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269 else
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270 f->width = xf->max_bounds.width;
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271
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272 /* Some fonts have a default char whose width is 0. This is no good.
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273 If that's the case, first try 'n' as the default char, and if n has
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274 0 width too (unlikely) then just use the max width. */
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275 if (f->width == 0)
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276 {
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277 if (def_char == xf->default_char)
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278 f->width = xf->max_bounds.width;
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279 else
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280 {
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281 def_char = xf->default_char;
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282 goto once_more;
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283 }
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284 }
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285 }
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286
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287 /* If all characters don't exist then there could potentially be
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288 0-width characters lurking out there. Not setting this flag
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289 trips an optimization that would make them appear to have width
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290 to redisplay. This is bad. So we set it if not all characters
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291 have the same width or if not all characters are defined.
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292 */
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293 /* #### This sucks. There is a measurable performance increase
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294 when using proportional width fonts if this flag is not set.
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295 Unfortunately so many of the fucking X fonts are not fully
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296 defined that we could almost just get rid of this damn flag and
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297 make it an assertion. */
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298 f->proportional_p = (xf->min_bounds.width != xf->max_bounds.width ||
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299 (/* x_handle_non_fully_specified_fonts */ 0 &&
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300 !xf->all_chars_exist));
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301 #if 0
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302 f->width = gdk_char_width (gf, 'n');
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303 f->proportional_p = (gdk_char_width (gf, '|') != gdk_char_width (gf, 'W')) ? 1 : 0;
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304 #endif
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305 return 1;
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306 }
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307
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308 static void
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309 gtk_mark_font_instance (struct Lisp_Font_Instance *f)
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310 {
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311 mark_object (FONT_INSTANCE_GTK_TRUENAME (f));
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312 }
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313
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314 static void
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315 gtk_print_font_instance (struct Lisp_Font_Instance *f,
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316 Lisp_Object printcharfun,
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317 int escapeflag)
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318 {
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800
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319 write_fmt_string (printcharfun, " 0x%lx",
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320 (unsigned long) gdk_font_id (FONT_INSTANCE_GTK_FONT (f)));
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462
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321 }
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322
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323 static void
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324 gtk_finalize_font_instance (struct Lisp_Font_Instance *f)
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325 {
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326 if (f->data)
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327 {
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328 if (DEVICE_LIVE_P (XDEVICE (f->device)))
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329 {
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330 gdk_font_unref (FONT_INSTANCE_GTK_FONT (f));
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331 }
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332 xfree (f->data);
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333 f->data = 0;
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334 }
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335 }
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336
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337 /* Forward declarations for X specific functions at the end of the file */
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338 Lisp_Object __get_gtk_font_truename (GdkFont *gdk_font, int expandp);
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339 static Lisp_Object __gtk_list_fonts_internal (const char *pattern);
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340
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341 static Lisp_Object
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578
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342 gtk_font_instance_truename (struct Lisp_Font_Instance *f, Error_Behavior errb)
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462
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343 {
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344 if (NILP (FONT_INSTANCE_GTK_TRUENAME (f)))
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345 {
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346 FONT_INSTANCE_GTK_TRUENAME (f) = __get_gtk_font_truename (FONT_INSTANCE_GTK_FONT (f), 1);
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347
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348 if (NILP (FONT_INSTANCE_GTK_TRUENAME (f)))
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349 {
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350 /* Ok, just this once, return the font name as the truename.
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351 (This is only used by Fequal() right now.) */
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352 return f->name;
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353 }
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354 }
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355 return (FONT_INSTANCE_GTK_TRUENAME (f));
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356 }
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357
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358 static Lisp_Object
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359 gtk_font_instance_properties (struct Lisp_Font_Instance *f)
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360 {
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361 Lisp_Object result = Qnil;
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362
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363 /* #### BILL!!! */
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364 /* There seems to be no way to get this information under Gtk */
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365 return result;
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366 }
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367
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368 static Lisp_Object
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369 gtk_list_fonts (Lisp_Object pattern, Lisp_Object device)
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370 {
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371 const char *patternext;
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372
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373 TO_EXTERNAL_FORMAT (LISP_STRING, pattern, C_STRING_ALLOCA, patternext, Qbinary);
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374
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375 return (__gtk_list_fonts_internal (patternext));
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376 }
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377
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378 #ifdef MULE
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379
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380 static int
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381 gtk_font_spec_matches_charset (struct device *d, Lisp_Object charset,
|
|
867
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382 const Ibyte *nonreloc, Lisp_Object reloc,
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|
462
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383 Bytecount offset, Bytecount length)
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|
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384 {
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385 if (UNBOUNDP (charset))
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|
386 return 1;
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|
|
387 /* Hack! Short font names don't have the registry in them,
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|
388 so we just assume the user knows what they're doing in the
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389 case of ASCII. For other charsets, you gotta give the
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390 long form; sorry buster.
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|
|
391 */
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|
|
392 if (EQ (charset, Vcharset_ascii))
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|
|
393 {
|
|
867
|
394 const Ibyte *the_nonreloc = nonreloc;
|
|
462
|
395 int i;
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|
|
396 Bytecount the_length = length;
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|
|
397
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|
|
398 if (!the_nonreloc)
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|
|
399 the_nonreloc = XSTRING_DATA (reloc);
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|
|
400 fixup_internal_substring (nonreloc, reloc, offset, &the_length);
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|
|
401 the_nonreloc += offset;
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|
|
402 if (!memchr (the_nonreloc, '*', the_length))
|
|
|
403 {
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|
|
404 for (i = 0;; i++)
|
|
|
405 {
|
|
867
|
406 const Ibyte *new_nonreloc = (const Ibyte *)
|
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462
|
407 memchr (the_nonreloc, '-', the_length);
|
|
|
408 if (!new_nonreloc)
|
|
|
409 break;
|
|
|
410 new_nonreloc++;
|
|
|
411 the_length -= new_nonreloc - the_nonreloc;
|
|
|
412 the_nonreloc = new_nonreloc;
|
|
|
413 }
|
|
|
414
|
|
|
415 /* If it has less than 5 dashes, it's a short font.
|
|
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416 Of course, long fonts always have 14 dashes or so, but short
|
|
|
417 fonts never have more than 1 or 2 dashes, so this is some
|
|
|
418 sort of reasonable heuristic. */
|
|
|
419 if (i < 5)
|
|
|
420 return 1;
|
|
|
421 }
|
|
|
422 }
|
|
|
423
|
|
|
424 return (fast_string_match (XCHARSET_REGISTRY (charset),
|
|
|
425 nonreloc, reloc, offset, length, 1,
|
|
|
426 ERROR_ME, 0) >= 0);
|
|
|
427 }
|
|
|
428
|
|
|
429 /* find a font spec that matches font spec FONT and also matches
|
|
|
430 (the registry of) CHARSET. */
|
|
|
431 static Lisp_Object gtk_find_charset_font (Lisp_Object device, Lisp_Object font, Lisp_Object charset);
|
|
|
432
|
|
|
433 #endif /* MULE */
|
|
|
434
|
|
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435
|
|
|
436 /************************************************************************/
|
|
|
437 /* initialization */
|
|
|
438 /************************************************************************/
|
|
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439
|
|
|
440 void
|
|
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441 syms_of_objects_gtk (void)
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|
|
442 {
|
|
|
443 }
|
|
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444
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|
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445 void
|
|
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446 console_type_create_objects_gtk (void)
|
|
|
447 {
|
|
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448 /* object methods */
|
|
|
449
|
|
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450 CONSOLE_HAS_METHOD (gtk, initialize_color_instance);
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|
|
451 CONSOLE_HAS_METHOD (gtk, print_color_instance);
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|
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452 CONSOLE_HAS_METHOD (gtk, finalize_color_instance);
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|
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453 CONSOLE_HAS_METHOD (gtk, color_instance_equal);
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|
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454 CONSOLE_HAS_METHOD (gtk, color_instance_hash);
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|
|
455 CONSOLE_HAS_METHOD (gtk, color_instance_rgb_components);
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|
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456 CONSOLE_HAS_METHOD (gtk, valid_color_name_p);
|
|
|
457
|
|
|
458 CONSOLE_HAS_METHOD (gtk, initialize_font_instance);
|
|
|
459 CONSOLE_HAS_METHOD (gtk, mark_font_instance);
|
|
|
460 CONSOLE_HAS_METHOD (gtk, print_font_instance);
|
|
|
461 CONSOLE_HAS_METHOD (gtk, finalize_font_instance);
|
|
|
462 CONSOLE_HAS_METHOD (gtk, font_instance_truename);
|
|
|
463 CONSOLE_HAS_METHOD (gtk, font_instance_properties);
|
|
|
464 CONSOLE_HAS_METHOD (gtk, list_fonts);
|
|
|
465 #ifdef MULE
|
|
|
466 CONSOLE_HAS_METHOD (gtk, find_charset_font);
|
|
|
467 CONSOLE_HAS_METHOD (gtk, font_spec_matches_charset);
|
|
|
468 #endif
|
|
|
469 }
|
|
|
470
|
|
|
471 void
|
|
|
472 vars_of_objects_gtk (void)
|
|
|
473 {
|
|
|
474 }
|
|
|
475
|
|
|
476 /* #### BILL!!! Try to make this go away eventually */
|
|
|
477 /* X Specific stuff */
|
|
|
478 #include <X11/Xatom.h>
|
|
|
479
|
|
|
480 /* Unbounded, for sufficiently small values of infinity... */
|
|
|
481 #define MAX_FONT_COUNT 5000
|
|
|
482
|
|
|
483 #ifdef MULE
|
|
|
484 /* find a font spec that matches font spec FONT and also matches
|
|
|
485 (the registry of) CHARSET. */
|
|
|
486 static Lisp_Object
|
|
|
487 gtk_find_charset_font (Lisp_Object device, Lisp_Object font, Lisp_Object charset)
|
|
|
488 {
|
|
|
489 char **names;
|
|
|
490 int count = 0;
|
|
|
491 Lisp_Object result = Qnil;
|
|
|
492 const char *patternext;
|
|
|
493 int i;
|
|
|
494
|
|
|
495 TO_EXTERNAL_FORMAT (LISP_STRING, font, C_STRING_ALLOCA, patternext, Qbinary);
|
|
|
496
|
|
|
497 names = XListFonts (GDK_DISPLAY (),
|
|
|
498 patternext, MAX_FONT_COUNT, &count);
|
|
788
|
499 /* #### This code seems awfully bogus -- mrb */
|
|
462
|
500 for (i = 0; i < count; i ++)
|
|
|
501 {
|
|
867
|
502 const Ibyte *intname;
|
|
462
|
503 Bytecount intlen;
|
|
|
504
|
|
|
505 TO_INTERNAL_FORMAT (C_STRING, names[i], ALLOCA, (intname, intlen),
|
|
|
506 Qctext);
|
|
|
507 if (gtk_font_spec_matches_charset (XDEVICE (device), charset,
|
|
|
508 intname, Qnil, 0, -1))
|
|
|
509 {
|
|
|
510 result = make_string ((char *) intname, intlen);
|
|
|
511 break;
|
|
|
512 }
|
|
|
513 }
|
|
|
514
|
|
|
515 if (names)
|
|
|
516 XFreeFontNames (names);
|
|
|
517
|
|
|
518 /* Check for a short font name. */
|
|
|
519 if (NILP (result)
|
|
|
520 && gtk_font_spec_matches_charset (XDEVICE (device), charset, 0,
|
|
|
521 font, 0, -1))
|
|
|
522 return font;
|
|
|
523
|
|
|
524 return result;
|
|
|
525 }
|
|
|
526 #endif /* MULE */
|
|
|
527
|
|
|
528 /* Unbounded, for sufficiently small values of infinity... */
|
|
|
529 #define MAX_FONT_COUNT 5000
|
|
|
530
|
|
|
531 static int
|
|
|
532 valid_font_name_p (Display *dpy, char *name)
|
|
|
533 {
|
|
|
534 /* Maybe this should be implemented by callign XLoadFont and trapping
|
|
|
535 the error. That would be a lot of work, and wasteful as hell, but
|
|
|
536 might be more correct.
|
|
|
537 */
|
|
|
538 int nnames = 0;
|
|
|
539 char **names = 0;
|
|
|
540 if (! name)
|
|
|
541 return 0;
|
|
|
542 names = XListFonts (dpy, name, 1, &nnames);
|
|
|
543 if (names)
|
|
|
544 XFreeFontNames (names);
|
|
|
545 return (nnames != 0);
|
|
|
546 }
|
|
|
547
|
|
|
548 Lisp_Object
|
|
|
549 __get_gtk_font_truename (GdkFont *gdk_font, int expandp)
|
|
|
550 {
|
|
|
551 Display *dpy = GDK_FONT_XDISPLAY (gdk_font);
|
|
|
552 GSList *names = ((GdkFontPrivate *) gdk_font)->names;
|
|
|
553 Lisp_Object font_name = Qnil;
|
|
|
554
|
|
|
555 while (names)
|
|
|
556 {
|
|
|
557 if (names->data)
|
|
|
558 {
|
|
|
559 if (valid_font_name_p (dpy, names->data))
|
|
|
560 {
|
|
|
561 if (!expandp)
|
|
|
562 {
|
|
|
563 /* They want the wildcarded version */
|
|
|
564 font_name = build_string (names->data);
|
|
|
565 }
|
|
|
566 else
|
|
|
567 {
|
|
|
568 /* Need to expand out */
|
|
|
569 int nnames = 0;
|
|
|
570 char **x_font_names = 0;
|
|
|
571
|
|
|
572 x_font_names = XListFonts (dpy, names->data, 1, &nnames);
|
|
|
573 if (x_font_names)
|
|
|
574 {
|
|
|
575 font_name = build_string (x_font_names[0]);
|
|
|
576 XFreeFontNames (x_font_names);
|
|
|
577 }
|
|
|
578 }
|
|
|
579 break;
|
|
|
580 }
|
|
|
581 }
|
|
|
582 names = names->next;
|
|
|
583 }
|
|
|
584 return (font_name);
|
|
|
585 }
|
|
|
586
|
|
|
587 static Lisp_Object __gtk_list_fonts_internal (const char *pattern)
|
|
|
588 {
|
|
|
589 char **names;
|
|
|
590 int count = 0;
|
|
|
591 Lisp_Object result = Qnil;
|
|
|
592
|
|
|
593 names = XListFonts (GDK_DISPLAY (), pattern, MAX_FONT_COUNT, &count);
|
|
|
594 while (count--)
|
|
|
595 result = Fcons (build_ext_string (names [count], Qbinary), result);
|
|
|
596 if (names)
|
|
|
597 XFreeFontNames (names);
|
|
|
598
|
|
|
599 return result;
|
|
|
600 }
|
