Pileus Git - ~andy/gtk/blob - gdk/broadway/gdkvisual-broadway.c

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "config.h"
  28
  29 #include "gdkvisualprivate.h"
  30
  31 #include "gdkprivate-broadway.h"
  32 #include "gdkscreen-broadway.h"
  33 #include "gdkinternals.h"
  34
  35 struct _GdkBroadwayVisual
  36 {
  37   GdkVisual visual;
  38 };
  39
  40 struct _GdkBroadwayVisualClass
  41 {
  42   GObjectClass parent_class;
  43 };
  44
  45 static void     gdk_visual_decompose_mask (gulong     mask,
  46                                            gint      *shift,
  47                                            gint      *prec);
  48
  49
  50 G_DEFINE_TYPE (GdkBroadwayVisual, gdk_broadway_visual, GDK_TYPE_VISUAL)
  51
  52 static void
  53 gdk_broadway_visual_finalize (GObject *object)
  54 {
  55   G_OBJECT_CLASS (gdk_broadway_visual_parent_class)->finalize (object);
  56 }
  57
  58 static void
  59 gdk_broadway_visual_class_init (GdkBroadwayVisualClass *visual_class)
  60 {
  61   GObjectClass *object_class = G_OBJECT_CLASS (visual_class);
  62
  63   object_class->finalize = gdk_broadway_visual_finalize;
  64 }
  65
  66 static void
  67 gdk_broadway_visual_init (GdkBroadwayVisual *visual)
  68 {
  69 }
  70
  71 void
  72 _gdk_broadway_screen_init_visuals (GdkScreen *screen)
  73 {
  74   GdkBroadwayScreen *broadway_screen;
  75   GdkVisual **visuals;
  76   int nvisuals;
  77
  78   g_return_if_fail (GDK_IS_SCREEN (screen));
  79   broadway_screen = GDK_BROADWAY_SCREEN (screen);
  80
  81   nvisuals = 2;
  82   visuals = g_new (GdkVisual *, nvisuals);
  83
  84   visuals[0] = g_object_new (GDK_TYPE_BROADWAY_VISUAL, NULL);
  85   visuals[0]->screen = screen;
  86   visuals[0]->type = GDK_VISUAL_TRUE_COLOR;
  87   visuals[0]->depth = 32;
  88   visuals[0]->byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? GDK_LSB_FIRST : GDK_MSB_FIRST;
  89   visuals[0]->red_mask = 0xff0000;
  90   visuals[0]->green_mask = 0xff00;
  91   visuals[0]->blue_mask = 0xff;
  92   visuals[0]->colormap_size = 256;
  93   visuals[0]->bits_per_rgb = 8;
  94   gdk_visual_decompose_mask (visuals[0]->red_mask,
  95                              &visuals[0]->red_shift,
  96                              &visuals[0]->red_prec);
  97   gdk_visual_decompose_mask (visuals[0]->green_mask,
  98                              &visuals[0]->green_shift,
  99                              &visuals[0]->green_prec);
 100   gdk_visual_decompose_mask (visuals[0]->blue_mask,
 101                              &visuals[0]->blue_shift,
 102                              &visuals[0]->blue_prec);
 103
 104   visuals[1] = g_object_new (GDK_TYPE_BROADWAY_VISUAL, NULL);
 105   visuals[1]->screen = screen;
 106   visuals[1]->type = GDK_VISUAL_TRUE_COLOR;
 107   visuals[1]->depth = 24;
 108   visuals[1]->byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? GDK_LSB_FIRST : GDK_MSB_FIRST;
 109   visuals[1]->red_mask = 0xff0000;
 110   visuals[1]->green_mask = 0xff00;
 111   visuals[1]->blue_mask = 0xff;
 112   visuals[1]->colormap_size = 256;
 113   visuals[1]->bits_per_rgb = 8;
 114   gdk_visual_decompose_mask (visuals[1]->red_mask,
 115                              &visuals[1]->red_shift,
 116                              &visuals[1]->red_prec);
 117   gdk_visual_decompose_mask (visuals[1]->green_mask,
 118                              &visuals[1]->green_shift,
 119                              &visuals[1]->green_prec);
 120   gdk_visual_decompose_mask (visuals[1]->blue_mask,
 121                              &visuals[1]->blue_shift,
 122                              &visuals[1]->blue_prec);
 123
 124   broadway_screen->system_visual = visuals[1];
 125   broadway_screen->rgba_visual = visuals[0];
 126
 127   broadway_screen->navailable_depths = 2;
 128   broadway_screen->available_depths[0] = 32;
 129   broadway_screen->available_depths[1] = 24;
 130
 131   broadway_screen->navailable_types = 1;
 132   broadway_screen->available_types[0] = GDK_VISUAL_TRUE_COLOR;
 133
 134   broadway_screen->visuals = visuals;
 135   broadway_screen->nvisuals = nvisuals;
 136 }
 137
 138 gint
 139 _gdk_broadway_screen_visual_get_best_depth (GdkScreen * screen)
 140 {
 141   return GDK_BROADWAY_SCREEN (screen)->available_depths[0];
 142 }
 143
 144 GdkVisualType
 145 _gdk_broadway_screen_visual_get_best_type (GdkScreen * screen)
 146 {
 147   return GDK_BROADWAY_SCREEN (screen)->available_types[0];
 148 }
 149
 150 GdkVisual *
 151 _gdk_broadway_screen_get_system_visual (GdkScreen * screen)
 152 {
 153   g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
 154
 155   return ((GdkVisual *) GDK_BROADWAY_SCREEN (screen)->system_visual);
 156 }
 157
 158 GdkVisual*
 159 _gdk_broadway_screen_visual_get_best (GdkScreen * screen)
 160 {
 161   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 162
 163   return (GdkVisual *)broadway_screen->visuals[0];
 164 }
 165
 166 GdkVisual*
 167 _gdk_broadway_screen_visual_get_best_with_depth (GdkScreen * screen,
 168                                                  gint depth)
 169 {
 170   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 171   GdkVisual *return_val;
 172   int i;
 173
 174   return_val = NULL;
 175   for (i = 0; i < broadway_screen->nvisuals; i++)
 176     if (depth == broadway_screen->visuals[i]->depth)
 177       {
 178         return_val = (GdkVisual *) broadway_screen->visuals[i];
 179         break;
 180       }
 181
 182   return return_val;
 183 }
 184
 185 GdkVisual*
 186 _gdk_broadway_screen_visual_get_best_with_type (GdkScreen * screen,
 187                                                 GdkVisualType visual_type)
 188 {
 189   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 190   GdkVisual *return_val;
 191   int i;
 192
 193   return_val = NULL;
 194   for (i = 0; i < broadway_screen->nvisuals; i++)
 195     if (visual_type == broadway_screen->visuals[i]->type)
 196       {
 197         return_val = (GdkVisual *) broadway_screen->visuals[i];
 198         break;
 199       }
 200
 201   return return_val;
 202 }
 203
 204 GdkVisual*
 205 _gdk_broadway_screen_visual_get_best_with_both (GdkScreen * screen,
 206                                                 gint          depth,
 207                                                 GdkVisualType visual_type)
 208 {
 209   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 210   GdkVisual *return_val;
 211   int i;
 212
 213   return_val = NULL;
 214   for (i = 0; i < broadway_screen->nvisuals; i++)
 215     if ((depth == broadway_screen->visuals[i]->depth) &&
 216         (visual_type == broadway_screen->visuals[i]->type))
 217       {
 218         return_val = (GdkVisual *) broadway_screen->visuals[i];
 219         break;
 220       }
 221
 222   return return_val;
 223 }
 224
 225 void
 226 _gdk_broadway_screen_query_depths  (GdkScreen * screen,
 227                                     gint **depths,
 228                                     gint  *count)
 229 {
 230   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 231
 232   *count = broadway_screen->navailable_depths;
 233   *depths = broadway_screen->available_depths;
 234 }
 235
 236 void
 237 _gdk_broadway_screen_query_visual_types (GdkScreen * screen,
 238                                          GdkVisualType **visual_types,
 239                                          gint           *count)
 240 {
 241   GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
 242
 243   *count = broadway_screen->navailable_types;
 244   *visual_types = broadway_screen->available_types;
 245 }
 246
 247 GList *
 248 _gdk_broadway_screen_list_visuals (GdkScreen *screen)
 249 {
 250   GList *list;
 251   GdkBroadwayScreen *broadway_screen;
 252   guint i;
 253
 254   g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
 255   broadway_screen = GDK_BROADWAY_SCREEN (screen);
 256
 257   list = NULL;
 258
 259   for (i = 0; i < broadway_screen->nvisuals; ++i)
 260     list = g_list_append (list, broadway_screen->visuals[i]);
 261
 262   return list;
 263 }
 264
 265 static void
 266 gdk_visual_decompose_mask (gulong  mask,
 267                            gint   *shift,
 268                            gint   *prec)
 269 {
 270   *shift = 0;
 271   *prec = 0;
 272
 273   if (mask == 0)
 274     {
 275       g_warning ("Mask is 0 in visual. Server bug ?");
 276       return;
 277     }
 278
 279   while (!(mask & 0x1))
 280     {
 281       (*shift)++;
 282       mask >>= 1;
 283     }
 284
 285   while (mask & 0x1)
 286     {
 287       (*prec)++;
 288       mask >>= 1;
 289     }
 290 }