Pileus Git - ~andy/gtk/blob - gdk/x11/gdkpixmap-x11.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 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 /* Needed for SEEK_END in SunOS */
  32 #include <unistd.h>
  33 #include <X11/Xlib.h>
  34
  35 #include "gdkx.h"
  36
  37 #include "gdkpixmap-x11.h"
  38 #include "gdkprivate-x11.h"
  39
  40 typedef struct
  41 {
  42   gchar *color_string;
  43   GdkColor color;
  44   gint transparent;
  45 } _GdkPixmapColor;
  46
  47 typedef struct
  48 {
  49   guint ncolors;
  50   GdkColormap *colormap;
  51   gulong pixels[1];
  52 } _GdkPixmapInfo;
  53
  54 static void gdk_pixmap_impl_x11_get_size   (GdkDrawable        *drawable,
  55                                         gint               *width,
  56                                         gint               *height);
  57
  58 static void gdk_pixmap_impl_x11_init       (GdkPixmapImplX11      *pixmap);
  59 static void gdk_pixmap_impl_x11_class_init (GdkPixmapImplX11Class *klass);
  60 static void gdk_pixmap_impl_x11_finalize   (GObject            *object);
  61
  62 static gpointer parent_class = NULL;
  63
  64 static GType
  65 gdk_pixmap_impl_x11_get_type (void)
  66 {
  67   static GType object_type = 0;
  68
  69   if (!object_type)
  70     {
  71       static const GTypeInfo object_info =
  72       {
  73         sizeof (GdkPixmapImplX11Class),
  74         (GBaseInitFunc) NULL,
  75         (GBaseFinalizeFunc) NULL,
  76         (GClassInitFunc) gdk_pixmap_impl_x11_class_init,
  77         NULL,           /* class_finalize */
  78         NULL,           /* class_data */
  79         sizeof (GdkPixmapImplX11),
  80         0,              /* n_preallocs */
  81         (GInstanceInitFunc) gdk_pixmap_impl_x11_init,
  82       };
  83
  84       object_type = g_type_register_static (GDK_TYPE_DRAWABLE_IMPL_X11,
  85                                             "GdkPixmapImplX11",
  86                                             &object_info, 0);
  87     }
  88
  89   return object_type;
  90 }
  91
  92
  93 GType
  94 _gdk_pixmap_impl_get_type (void)
  95 {
  96   return gdk_pixmap_impl_x11_get_type ();
  97 }
  98
  99 static void
 100 gdk_pixmap_impl_x11_init (GdkPixmapImplX11 *impl)
 101 {
 102   impl->width = 1;
 103   impl->height = 1;
 104 }
 105
 106 static void
 107 gdk_pixmap_impl_x11_class_init (GdkPixmapImplX11Class *klass)
 108 {
 109   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 110   GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
 111
 112   parent_class = g_type_class_peek_parent (klass);
 113
 114   object_class->finalize = gdk_pixmap_impl_x11_finalize;
 115
 116   drawable_class->get_size = gdk_pixmap_impl_x11_get_size;
 117 }
 118
 119 static void
 120 gdk_pixmap_impl_x11_finalize (GObject *object)
 121 {
 122   GdkPixmapImplX11 *impl = GDK_PIXMAP_IMPL_X11 (object);
 123   GdkPixmap *wrapper = GDK_PIXMAP (GDK_DRAWABLE_IMPL_X11 (impl)->wrapper);
 124
 125   if (!impl->is_foreign)
 126     XFreePixmap (GDK_PIXMAP_XDISPLAY (wrapper), GDK_PIXMAP_XID (wrapper));
 127
 128   gdk_xid_table_remove (GDK_PIXMAP_XID (wrapper));
 129
 130   G_OBJECT_CLASS (parent_class)->finalize (object);
 131 }
 132
 133 static void
 134 gdk_pixmap_impl_x11_get_size   (GdkDrawable *drawable,
 135                                 gint        *width,
 136                                 gint        *height)
 137 {
 138   if (width)
 139     *width = GDK_PIXMAP_IMPL_X11 (drawable)->width;
 140   if (height)
 141     *height = GDK_PIXMAP_IMPL_X11 (drawable)->height;
 142 }
 143
 144 GdkPixmap*
 145 gdk_pixmap_new (GdkWindow *window,
 146                 gint       width,
 147                 gint       height,
 148                 gint       depth)
 149 {
 150   GdkPixmap *pixmap;
 151   GdkDrawableImplX11 *draw_impl;
 152   GdkPixmapImplX11 *pix_impl;
 153   GdkColormap *cmap;
 154   gint window_depth;
 155
 156   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 157   g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
 158   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 159
 160   if (!window)
 161     window = _gdk_parent_root;
 162
 163   if (GDK_WINDOW_DESTROYED (window))
 164     return NULL;
 165
 166   window_depth = gdk_drawable_get_depth (GDK_DRAWABLE (window));
 167   if (depth == -1)
 168     depth = window_depth;
 169
 170   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 171   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 172   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 173   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 174
 175   draw_impl->xdisplay = GDK_WINDOW_XDISPLAY (window);
 176   draw_impl->xid = XCreatePixmap (GDK_PIXMAP_XDISPLAY (pixmap),
 177                                   GDK_WINDOW_XID (window),
 178                                   width, height, depth);
 179
 180   pix_impl->is_foreign = FALSE;
 181   pix_impl->width = width;
 182   pix_impl->height = height;
 183   GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
 184
 185   if (depth == window_depth)
 186     {
 187       cmap = gdk_drawable_get_colormap (window);
 188       if (cmap)
 189         gdk_drawable_set_colormap (pixmap, cmap);
 190     }
 191
 192   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 193
 194   return pixmap;
 195 }
 196
 197 GdkPixmap *
 198 gdk_bitmap_create_from_data (GdkWindow   *window,
 199                              const gchar *data,
 200                              gint         width,
 201                              gint         height)
 202 {
 203   GdkPixmap *pixmap;
 204   GdkDrawableImplX11 *draw_impl;
 205   GdkPixmapImplX11 *pix_impl;
 206
 207   g_return_val_if_fail (data != NULL, NULL);
 208   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 209   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 210
 211   if (!window)
 212     window = _gdk_parent_root;
 213
 214   if (GDK_WINDOW_DESTROYED (window))
 215     return NULL;
 216
 217   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 218   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 219   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 220   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 221
 222   pix_impl->is_foreign = FALSE;
 223   pix_impl->width = width;
 224   pix_impl->height = height;
 225   GDK_PIXMAP_OBJECT (pixmap)->depth = 1;
 226
 227   draw_impl->xdisplay = GDK_WINDOW_XDISPLAY (window);
 228   draw_impl->xid = XCreateBitmapFromData (GDK_WINDOW_XDISPLAY (window),
 229                                           GDK_WINDOW_XID (window),
 230                                           (char *)data, width, height);
 231
 232   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 233
 234   return pixmap;
 235 }
 236
 237 GdkPixmap*
 238 gdk_pixmap_create_from_data (GdkWindow   *window,
 239                              const gchar *data,
 240                              gint         width,
 241                              gint         height,
 242                              gint         depth,
 243                              GdkColor    *fg,
 244                              GdkColor    *bg)
 245 {
 246   GdkPixmap *pixmap;
 247   GdkDrawableImplX11 *draw_impl;
 248   GdkPixmapImplX11 *pix_impl;
 249
 250   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 251   g_return_val_if_fail (data != NULL, NULL);
 252   g_return_val_if_fail (fg != NULL, NULL);
 253   g_return_val_if_fail (bg != NULL, NULL);
 254   g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
 255   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 256
 257   if (!window)
 258     window = _gdk_parent_root;
 259
 260   if (GDK_WINDOW_DESTROYED (window))
 261     return NULL;
 262
 263   if (depth == -1)
 264     depth = gdk_drawable_get_visual (window)->depth;
 265
 266   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 267   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 268   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 269   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 270
 271   pix_impl->is_foreign = FALSE;
 272   pix_impl->width = width;
 273   pix_impl->height = height;
 274   GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
 275
 276   draw_impl->xdisplay = GDK_DRAWABLE_XDISPLAY (window);
 277   draw_impl->xid = XCreatePixmapFromBitmapData (GDK_WINDOW_XDISPLAY (window),
 278                                                 GDK_WINDOW_XID (window),
 279                                                 (char *)data, width, height,
 280                                                 fg->pixel, bg->pixel, depth);
 281
 282   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 283
 284   return pixmap;
 285 }
 286
 287 /**
 288  * gdk_pixmap_foreign_new:
 289  * @anid: an X window ID for a pixmap
 290  *
 291  * Creates a #GdkPixmap for the Xlib pixmap ID @anid.
 292  * If the Xlib pixmap is destroyed while creating
 293  * the #GdkPixmap, this function returns %NULL.
 294  *
 295  * Return value: a new #GdkPixmap
 296  **/
 297 GdkPixmap*
 298 gdk_pixmap_foreign_new (GdkNativeWindow anid)
 299 {
 300   GdkPixmap *pixmap;
 301   GdkDrawableImplX11 *draw_impl;
 302   GdkPixmapImplX11 *pix_impl;
 303   Pixmap xpixmap;
 304   Window root_return;
 305   unsigned int x_ret, y_ret, w_ret, h_ret, bw_ret, depth_ret;
 306
 307   /* check to make sure we were passed something at
 308      least a little sane */
 309   g_return_val_if_fail((anid != 0), NULL);
 310
 311   /* set the pixmap to the passed in value */
 312   xpixmap = anid;
 313
 314   /* get information about the Pixmap to fill in the structure for
 315      the gdk window */
 316   if (!XGetGeometry(GDK_DISPLAY(),
 317                     xpixmap, &root_return,
 318                     &x_ret, &y_ret, &w_ret, &h_ret, &bw_ret, &depth_ret))
 319       return NULL;
 320
 321   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 322   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 323   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 324   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 325
 326
 327   draw_impl->xdisplay = GDK_DISPLAY ();
 328   draw_impl->xid = xpixmap;
 329
 330   pix_impl->is_foreign = TRUE;
 331   pix_impl->width = w_ret;
 332   pix_impl->height = h_ret;
 333   GDK_PIXMAP_OBJECT (pixmap)->depth = depth_ret;
 334
 335   gdk_xid_table_insert(&draw_impl->xid, pixmap);
 336
 337   return pixmap;
 338 }