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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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872
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5 Copyright (C) 1995, 1996, 2002 Ben Wing.
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462
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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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872
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33 #include "buffer.h"
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3676
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34 #include "charset.h"
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872
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35 #include "device-impl.h"
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36 #include "insdel.h"
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462
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37
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872
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38 #include "console-gtk-impl.h"
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39 #include "objects-gtk-impl.h"
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462
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40
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41 /* sigh */
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42 #include <gdk/gdkx.h>
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43
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3659
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44 /* XListFonts doesn't allocate memory unconditionally based on this. (For
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45 XFree86 in 2005, at least. */
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46 #define MAX_FONT_COUNT INT_MAX
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47
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48 #ifdef DEBUG_XEMACS
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49 Fixnum debug_x_objects;
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50 #endif /* DEBUG_XEMACS */
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51
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462
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52
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53 /************************************************************************/
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54 /* color instances */
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55 /************************************************************************/
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56
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57 /* Replacement for XAllocColor() that tries to return the nearest
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58 available color if the colormap is full. Original was from FSFmacs,
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59 but rewritten by Jareth Hein <jareth@camelot-soft.com> 97/11/25
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60 Modified by Lee Kindness <lkindness@csl.co.uk> 31/08/99 to handle previous
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61 total failure which was due to a read/write colorcell being the nearest
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62 match - tries the next nearest...
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63
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64 Gdk takes care of all this behind the scenes, so we don't need to
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65 worry about it.
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66
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67 Return value is 1 for normal success, 2 for nearest color success,
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68 3 for Non-deallocable sucess. */
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69 int
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2286
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70 allocate_nearest_color (GdkColormap *colormap, GdkVisual *UNUSED (visual),
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462
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71 GdkColor *color_def)
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72 {
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73 int rc;
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74
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75 rc = gdk_colormap_alloc_color (colormap, color_def, FALSE, TRUE);
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76
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77 if (rc == TRUE)
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78 return (1);
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79
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80 return (0);
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81 }
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82
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83 int
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867
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84 gtk_parse_nearest_color (struct device *d, GdkColor *color, Ibyte *name,
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578
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85 Bytecount len, Error_Behavior errb)
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462
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86 {
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87 GdkColormap *cmap;
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88 GdkVisual *visual;
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89 int result;
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90
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91 cmap = DEVICE_GTK_COLORMAP(d);
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92 visual = DEVICE_GTK_VISUAL (d);
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93
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94 xzero (*color);
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95 {
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96 const Extbyte *extname;
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665
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97 Bytecount extnamelen;
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462
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98
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99 TO_EXTERNAL_FORMAT (DATA, (name, len), ALLOCA, (extname, extnamelen), Qbinary);
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100
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101 result = gdk_color_parse (extname, color);
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102 }
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103
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104 if (result == FALSE)
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105 {
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563
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106 maybe_invalid_argument ("unrecognized color", make_string (name, len),
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107 Qcolor, errb);
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462
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108 return 0;
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109 }
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110 result = allocate_nearest_color (cmap, visual, color);
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111 if (!result)
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112 {
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563
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113 maybe_signal_error (Qgui_error, "couldn't allocate color",
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114 make_string (name, len), Qcolor, errb);
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462
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115 return 0;
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116 }
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117
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118 return result;
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119 }
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120
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121 static int
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122 gtk_initialize_color_instance (struct Lisp_Color_Instance *c, Lisp_Object name,
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578
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123 Lisp_Object device, Error_Behavior errb)
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462
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124 {
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125 GdkColor color;
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126 int result;
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127
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128 result = gtk_parse_nearest_color (XDEVICE (device), &color,
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129 XSTRING_DATA (name),
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130 XSTRING_LENGTH (name),
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131 errb);
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132
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133 if (!result)
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134 return 0;
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135
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136 /* Don't allocate the data until we're sure that we will succeed,
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137 or the finalize method may get fucked. */
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138 c->data = xnew (struct gtk_color_instance_data);
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139 if (result == 3)
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140 COLOR_INSTANCE_GTK_DEALLOC (c) = 0;
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141 else
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142 COLOR_INSTANCE_GTK_DEALLOC (c) = 1;
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143 COLOR_INSTANCE_GTK_COLOR (c) = gdk_color_copy (&color);
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144 return 1;
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145 }
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146
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147 static void
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148 gtk_print_color_instance (struct Lisp_Color_Instance *c,
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149 Lisp_Object printcharfun,
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2286
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150 int UNUSED (escapeflag))
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462
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151 {
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152 GdkColor *color = COLOR_INSTANCE_GTK_COLOR (c);
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800
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153 write_fmt_string (printcharfun, " %ld=(%X,%X,%X)",
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154 color->pixel, color->red, color->green, color->blue);
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462
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155 }
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156
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157 static void
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158 gtk_finalize_color_instance (struct Lisp_Color_Instance *c)
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159 {
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160 if (c->data)
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161 {
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162 if (DEVICE_LIVE_P (XDEVICE (c->device)))
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163 {
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164 if (COLOR_INSTANCE_GTK_DEALLOC (c))
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165 {
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166 gdk_colormap_free_colors (DEVICE_GTK_COLORMAP (XDEVICE (c->device)),
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167 COLOR_INSTANCE_GTK_COLOR (c), 1);
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168 }
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169 gdk_color_free (COLOR_INSTANCE_GTK_COLOR (c));
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170 }
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1726
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171 xfree (c->data, void *);
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462
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172 c->data = 0;
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173 }
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174 }
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175
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176 /* Color instances are equal if they resolve to the same color on the
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177 screen (have the same RGB values). I imagine that
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178 "same RGB values" == "same cell in the colormap." Arguably we should
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179 be comparing their names or pixel values instead. */
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180
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181 static int
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182 gtk_color_instance_equal (struct Lisp_Color_Instance *c1,
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183 struct Lisp_Color_Instance *c2,
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2286
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184 int UNUSED (depth))
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462
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185 {
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186 return (gdk_color_equal (COLOR_INSTANCE_GTK_COLOR (c1),
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187 COLOR_INSTANCE_GTK_COLOR (c2)));
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188 }
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189
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2515
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190 static Hashcode
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2286
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191 gtk_color_instance_hash (struct Lisp_Color_Instance *c, int UNUSED (depth))
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462
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192 {
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193 return (gdk_color_hash (COLOR_INSTANCE_GTK_COLOR (c), NULL));
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194 }
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195
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196 static Lisp_Object
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197 gtk_color_instance_rgb_components (struct Lisp_Color_Instance *c)
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198 {
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199 GdkColor *color = COLOR_INSTANCE_GTK_COLOR (c);
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200 return (list3 (make_int (color->red),
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201 make_int (color->green),
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202 make_int (color->blue)));
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203 }
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204
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205 static int
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2286
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206 gtk_valid_color_name_p (struct device *UNUSED (d), Lisp_Object color)
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462
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207 {
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208 GdkColor c;
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209 const char *extname;
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210
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211 TO_EXTERNAL_FORMAT (LISP_STRING, color, C_STRING_ALLOCA, extname, Qctext);
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212
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213 if (gdk_color_parse (extname, &c) != TRUE)
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214 return(0);
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215 return (1);
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216 }
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217
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2527
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218 static Lisp_Object
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219 gtk_color_list (void)
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220 {
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221 /* #### BILL!!!
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222 Is this correct? */
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223 return call0 (intern ("x-color-list-internal"));
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224 }
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225
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462
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226
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227 /************************************************************************/
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228 /* font instances */
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229 /************************************************************************/
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230
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231 static int
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2286
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232 gtk_initialize_font_instance (struct Lisp_Font_Instance *f,
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233 Lisp_Object UNUSED (name),
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234 Lisp_Object UNUSED (device), Error_Behavior errb)
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462
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235 {
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236 GdkFont *gf;
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237 XFontStruct *xf;
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238 const char *extname;
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239
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240 TO_EXTERNAL_FORMAT (LISP_STRING, f->name, C_STRING_ALLOCA, extname, Qctext);
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241
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242 gf = gdk_font_load (extname);
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243
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244 if (!gf)
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245 {
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563
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246 maybe_signal_error (Qgui_error, "couldn't load font", f->name,
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247 Qfont, errb);
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462
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248 return 0;
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249 }
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250
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2054
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251 xf = (XFontStruct*) GDK_FONT_XFONT (gf);
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462
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252
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253 /* Don't allocate the data until we're sure that we will succeed,
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254 or the finalize method may get fucked. */
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255 f->data = xnew (struct gtk_font_instance_data);
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256 FONT_INSTANCE_GTK_FONT (f) = gf;
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257 f->ascent = gf->ascent;
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258 f->descent = gf->descent;
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259 f->height = gf->ascent + gf->descent;
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260
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261 /* Now lets figure out the width of the font */
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262 {
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263 /* following change suggested by Ted Phelps <phelps@dstc.edu.au> */
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264 unsigned int def_char = 'n'; /*xf->default_char;*/
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265 unsigned int byte1, byte2;
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266
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267 once_more:
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268 byte1 = def_char >> 8;
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269 byte2 = def_char & 0xFF;
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270
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271 if (xf->per_char)
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272 {
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273 /* Old versions of the R5 font server have garbage (>63k) as
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274 def_char. 'n' might not be a valid character. */
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275 if (byte1 < xf->min_byte1 ||
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276 byte1 > xf->max_byte1 ||
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277 byte2 < xf->min_char_or_byte2 ||
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278 byte2 > xf->max_char_or_byte2)
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279 f->width = 0;
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280 else
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281 f->width = xf->per_char[(byte1 - xf->min_byte1) *
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282 (xf->max_char_or_byte2 -
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283 xf->min_char_or_byte2 + 1) +
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284 (byte2 - xf->min_char_or_byte2)].width;
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285 }
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286 else
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287 f->width = xf->max_bounds.width;
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288
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289 /* Some fonts have a default char whose width is 0. This is no good.
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290 If that's the case, first try 'n' as the default char, and if n has
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291 0 width too (unlikely) then just use the max width. */
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292 if (f->width == 0)
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293 {
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294 if (def_char == xf->default_char)
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295 f->width = xf->max_bounds.width;
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296 else
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297 {
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298 def_char = xf->default_char;
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299 goto once_more;
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300 }
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301 }
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302 }
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303
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304 /* If all characters don't exist then there could potentially be
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305 0-width characters lurking out there. Not setting this flag
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306 trips an optimization that would make them appear to have width
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307 to redisplay. This is bad. So we set it if not all characters
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308 have the same width or if not all characters are defined.
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309 */
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310 /* #### This sucks. There is a measurable performance increase
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311 when using proportional width fonts if this flag is not set.
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312 Unfortunately so many of the fucking X fonts are not fully
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313 defined that we could almost just get rid of this damn flag and
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314 make it an assertion. */
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315 f->proportional_p = (xf->min_bounds.width != xf->max_bounds.width ||
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316 (/* x_handle_non_fully_specified_fonts */ 0 &&
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317 !xf->all_chars_exist));
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318 #if 0
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319 f->width = gdk_char_width (gf, 'n');
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320 f->proportional_p = (gdk_char_width (gf, '|') != gdk_char_width (gf, 'W')) ? 1 : 0;
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321 #endif
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322 return 1;
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323 }
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324
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325 static void
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326 gtk_print_font_instance (struct Lisp_Font_Instance *f,
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327 Lisp_Object printcharfun,
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2286
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328 int UNUSED (escapeflag))
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462
|
329 {
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|
800
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330 write_fmt_string (printcharfun, " 0x%lx",
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331 (unsigned long) gdk_font_id (FONT_INSTANCE_GTK_FONT (f)));
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|
462
|
332 }
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333
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334 static void
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335 gtk_finalize_font_instance (struct Lisp_Font_Instance *f)
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336 {
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337 if (f->data)
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338 {
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339 if (DEVICE_LIVE_P (XDEVICE (f->device)))
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340 {
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341 gdk_font_unref (FONT_INSTANCE_GTK_FONT (f));
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342 }
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|
1726
|
343 xfree (f->data, void *);
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462
|
344 f->data = 0;
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|
|
345 }
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|
|
346 }
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|
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347
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|
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348 /* Forward declarations for X specific functions at the end of the file */
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349 Lisp_Object __get_gtk_font_truename (GdkFont *gdk_font, int expandp);
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|
2527
|
350 static Lisp_Object __gtk_font_list_internal (const char *pattern);
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|
462
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351
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352 static Lisp_Object
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2286
|
353 gtk_font_instance_truename (struct Lisp_Font_Instance *f,
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354 Error_Behavior UNUSED (errb))
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|
462
|
355 {
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|
872
|
356 if (NILP (FONT_INSTANCE_TRUENAME (f)))
|
|
462
|
357 {
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|
872
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358 FONT_INSTANCE_TRUENAME (f) = __get_gtk_font_truename (FONT_INSTANCE_GTK_FONT (f), 1);
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|
462
|
359
|
|
872
|
360 if (NILP (FONT_INSTANCE_TRUENAME (f)))
|
|
462
|
361 {
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|
|
362 /* Ok, just this once, return the font name as the truename.
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|
363 (This is only used by Fequal() right now.) */
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|
|
364 return f->name;
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|
|
365 }
|
|
|
366 }
|
|
872
|
367 return (FONT_INSTANCE_TRUENAME (f));
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|
462
|
368 }
|
|
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369
|
|
|
370 static Lisp_Object
|
|
2286
|
371 gtk_font_instance_properties (struct Lisp_Font_Instance *UNUSED (f))
|
|
462
|
372 {
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|
|
373 Lisp_Object result = Qnil;
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|
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374
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|
|
375 /* #### BILL!!! */
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|
|
376 /* There seems to be no way to get this information under Gtk */
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|
|
377 return result;
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|
|
378 }
|
|
|
379
|
|
|
380 static Lisp_Object
|
|
2527
|
381 gtk_font_list (Lisp_Object pattern, Lisp_Object UNUSED (device),
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|
2286
|
382 Lisp_Object UNUSED (maxnumber))
|
|
462
|
383 {
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|
|
384 const char *patternext;
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|
|
385
|
|
|
386 TO_EXTERNAL_FORMAT (LISP_STRING, pattern, C_STRING_ALLOCA, patternext, Qbinary);
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|
|
387
|
|
2527
|
388 return (__gtk_font_list_internal (patternext));
|
|
462
|
389 }
|
|
|
390
|
|
3659
|
391 /* Include the charset support, shared, for the moment, with X11. */
|
|
|
392 #define THIS_IS_GTK
|
|
|
393 #include "objects-xlike-inc.c"
|
|
462
|
394
|
|
|
395
|
|
|
396 /************************************************************************/
|
|
|
397 /* initialization */
|
|
|
398 /************************************************************************/
|
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399
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400 void
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401 syms_of_objects_gtk (void)
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402 {
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403 }
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404
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405 void
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406 console_type_create_objects_gtk (void)
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407 {
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408 /* object methods */
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409
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410 CONSOLE_HAS_METHOD (gtk, initialize_color_instance);
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411 CONSOLE_HAS_METHOD (gtk, print_color_instance);
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412 CONSOLE_HAS_METHOD (gtk, finalize_color_instance);
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413 CONSOLE_HAS_METHOD (gtk, color_instance_equal);
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414 CONSOLE_HAS_METHOD (gtk, color_instance_hash);
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415 CONSOLE_HAS_METHOD (gtk, color_instance_rgb_components);
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416 CONSOLE_HAS_METHOD (gtk, valid_color_name_p);
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2527
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417 CONSOLE_HAS_METHOD (gtk, color_list);
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462
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418
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419 CONSOLE_HAS_METHOD (gtk, initialize_font_instance);
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420 CONSOLE_HAS_METHOD (gtk, print_font_instance);
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421 CONSOLE_HAS_METHOD (gtk, finalize_font_instance);
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422 CONSOLE_HAS_METHOD (gtk, font_instance_truename);
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423 CONSOLE_HAS_METHOD (gtk, font_instance_properties);
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2527
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424 CONSOLE_HAS_METHOD (gtk, font_list);
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462
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425 #ifdef MULE
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426 CONSOLE_HAS_METHOD (gtk, find_charset_font);
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427 CONSOLE_HAS_METHOD (gtk, font_spec_matches_charset);
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428 #endif
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429 }
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430
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431 void
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432 vars_of_objects_gtk (void)
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433 {
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3659
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434 #ifdef DEBUG_XEMACS
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435 DEFVAR_INT ("debug-x-objects", &debug_x_objects /*
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436 If non-zero, display debug information about X objects
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437 */ );
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438 debug_x_objects = 0;
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439 #endif
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462
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440 }
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441
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442 static int
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443 valid_font_name_p (Display *dpy, char *name)
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444 {
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445 /* Maybe this should be implemented by callign XLoadFont and trapping
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446 the error. That would be a lot of work, and wasteful as hell, but
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447 might be more correct.
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448 */
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449 int nnames = 0;
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450 char **names = 0;
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451 if (! name)
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452 return 0;
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453 names = XListFonts (dpy, name, 1, &nnames);
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454 if (names)
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455 XFreeFontNames (names);
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456 return (nnames != 0);
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457 }
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458
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459 Lisp_Object
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460 __get_gtk_font_truename (GdkFont *gdk_font, int expandp)
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461 {
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462 Display *dpy = GDK_FONT_XDISPLAY (gdk_font);
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463 GSList *names = ((GdkFontPrivate *) gdk_font)->names;
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464 Lisp_Object font_name = Qnil;
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465
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466 while (names)
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467 {
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468 if (names->data)
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469 {
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2054
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470 if (valid_font_name_p (dpy, (char*) names->data))
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462
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471 {
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472 if (!expandp)
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473 {
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474 /* They want the wildcarded version */
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2054
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475 font_name = build_string ((char*) names->data);
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462
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476 }
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477 else
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478 {
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479 /* Need to expand out */
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480 int nnames = 0;
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481 char **x_font_names = 0;
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482
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2054
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483 x_font_names = XListFonts (dpy, (char*) names->data, 1, &nnames);
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462
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484 if (x_font_names)
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485 {
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486 font_name = build_string (x_font_names[0]);
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487 XFreeFontNames (x_font_names);
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488 }
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489 }
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490 break;
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491 }
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492 }
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493 names = names->next;
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494 }
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495 return (font_name);
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496 }
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497
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2527
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498 static Lisp_Object __gtk_font_list_internal (const char *pattern)
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462
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499 {
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500 char **names;
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501 int count = 0;
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502 Lisp_Object result = Qnil;
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503
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504 names = XListFonts (GDK_DISPLAY (), pattern, MAX_FONT_COUNT, &count);
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505 while (count--)
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506 result = Fcons (build_ext_string (names [count], Qbinary), result);
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507 if (names)
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508 XFreeFontNames (names);
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509
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510 return result;
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511 }
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