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 #ifdef HAVE_XFT
 126   {
 127     GdkDrawableImplX11 *draw_impl = GDK_DRAWABLE_IMPL_X11 (impl);
 128
 129     if (draw_impl->picture)
 130       XRenderFreePicture (draw_impl->xdisplay, draw_impl->picture);
 131   }
 132 #endif /* HAVE_XFT */
 133
 134   if (!impl->is_foreign)
 135     XFreePixmap (GDK_PIXMAP_XDISPLAY (wrapper), GDK_PIXMAP_XID (wrapper));
 136
 137   gdk_xid_table_remove (GDK_PIXMAP_XID (wrapper));
 138
 139   G_OBJECT_CLASS (parent_class)->finalize (object);
 140 }
 141
 142 static void
 143 gdk_pixmap_impl_x11_get_size   (GdkDrawable *drawable,
 144                                 gint        *width,
 145                                 gint        *height)
 146 {
 147   if (width)
 148     *width = GDK_PIXMAP_IMPL_X11 (drawable)->width;
 149   if (height)
 150     *height = GDK_PIXMAP_IMPL_X11 (drawable)->height;
 151 }
 152
 153 GdkPixmap*
 154 gdk_pixmap_new (GdkWindow *window,
 155                 gint       width,
 156                 gint       height,
 157                 gint       depth)
 158 {
 159   GdkPixmap *pixmap;
 160   GdkDrawableImplX11 *draw_impl;
 161   GdkPixmapImplX11 *pix_impl;
 162   GdkColormap *cmap;
 163   gint window_depth;
 164
 165   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 166   g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
 167   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 168
 169   if (!window)
 170     window = _gdk_parent_root;
 171
 172   if (GDK_WINDOW_DESTROYED (window))
 173     return NULL;
 174
 175   window_depth = gdk_drawable_get_depth (GDK_DRAWABLE (window));
 176   if (depth == -1)
 177     depth = window_depth;
 178
 179   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 180   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 181   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 182   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 183
 184   draw_impl->xdisplay = GDK_WINDOW_XDISPLAY (window);
 185   draw_impl->xid = XCreatePixmap (GDK_PIXMAP_XDISPLAY (pixmap),
 186                                   GDK_WINDOW_XID (window),
 187                                   width, height, depth);
 188
 189   pix_impl->is_foreign = FALSE;
 190   pix_impl->width = width;
 191   pix_impl->height = height;
 192   GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
 193
 194   if (depth == window_depth)
 195     {
 196       cmap = gdk_drawable_get_colormap (window);
 197       if (cmap)
 198         gdk_drawable_set_colormap (pixmap, cmap);
 199     }
 200
 201   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 202
 203   return pixmap;
 204 }
 205
 206 GdkPixmap *
 207 gdk_bitmap_create_from_data (GdkWindow   *window,
 208                              const gchar *data,
 209                              gint         width,
 210                              gint         height)
 211 {
 212   GdkPixmap *pixmap;
 213   GdkDrawableImplX11 *draw_impl;
 214   GdkPixmapImplX11 *pix_impl;
 215
 216   g_return_val_if_fail (data != NULL, NULL);
 217   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 218   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 219
 220   if (!window)
 221     window = _gdk_parent_root;
 222
 223   if (GDK_WINDOW_DESTROYED (window))
 224     return NULL;
 225
 226   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 227   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 228   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 229   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 230
 231   pix_impl->is_foreign = FALSE;
 232   pix_impl->width = width;
 233   pix_impl->height = height;
 234   GDK_PIXMAP_OBJECT (pixmap)->depth = 1;
 235
 236   draw_impl->xdisplay = GDK_WINDOW_XDISPLAY (window);
 237   draw_impl->xid = XCreateBitmapFromData (GDK_WINDOW_XDISPLAY (window),
 238                                           GDK_WINDOW_XID (window),
 239                                           (char *)data, width, height);
 240
 241   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 242
 243   return pixmap;
 244 }
 245
 246 GdkPixmap*
 247 gdk_pixmap_create_from_data (GdkWindow   *window,
 248                              const gchar *data,
 249                              gint         width,
 250                              gint         height,
 251                              gint         depth,
 252                              GdkColor    *fg,
 253                              GdkColor    *bg)
 254 {
 255   GdkPixmap *pixmap;
 256   GdkDrawableImplX11 *draw_impl;
 257   GdkPixmapImplX11 *pix_impl;
 258
 259   g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
 260   g_return_val_if_fail (data != NULL, NULL);
 261   g_return_val_if_fail (fg != NULL, NULL);
 262   g_return_val_if_fail (bg != NULL, NULL);
 263   g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
 264   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 265
 266   if (!window)
 267     window = _gdk_parent_root;
 268
 269   if (GDK_WINDOW_DESTROYED (window))
 270     return NULL;
 271
 272   if (depth == -1)
 273     depth = gdk_drawable_get_visual (window)->depth;
 274
 275   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 276   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 277   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 278   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 279
 280   pix_impl->is_foreign = FALSE;
 281   pix_impl->width = width;
 282   pix_impl->height = height;
 283   GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
 284
 285   draw_impl->xdisplay = GDK_DRAWABLE_XDISPLAY (window);
 286   draw_impl->xid = XCreatePixmapFromBitmapData (GDK_WINDOW_XDISPLAY (window),
 287                                                 GDK_WINDOW_XID (window),
 288                                                 (char *)data, width, height,
 289                                                 fg->pixel, bg->pixel, depth);
 290
 291   gdk_xid_table_insert (&draw_impl->xid, pixmap);
 292
 293   return pixmap;
 294 }
 295
 296 /**
 297  * gdk_pixmap_foreign_new:
 298  * @anid: a native pixmap handle.
 299  *
 300  * Wraps a native window in a #GdkPixmap.
 301  * This may fail if the pixmap has been destroyed.
 302  *
 303  * For example in the X backend, a native pixmap handle is an Xlib
 304  * <type>XID</type>.
 305  *
 306  * Return value: the newly-created #GdkPixmap wrapper for the
 307  *    native pixmap or %NULL if the pixmap has been destroyed.
 308  **/
 309 GdkPixmap*
 310 gdk_pixmap_foreign_new (GdkNativeWindow anid)
 311 {
 312   GdkPixmap *pixmap;
 313   GdkDrawableImplX11 *draw_impl;
 314   GdkPixmapImplX11 *pix_impl;
 315   Pixmap xpixmap;
 316   Window root_return;
 317   int x_ret, y_ret;
 318   unsigned int w_ret, h_ret, bw_ret, depth_ret;
 319
 320   /* check to make sure we were passed something at
 321      least a little sane */
 322   g_return_val_if_fail((anid != 0), NULL);
 323
 324   /* set the pixmap to the passed in value */
 325   xpixmap = anid;
 326
 327   /* get information about the Pixmap to fill in the structure for
 328      the gdk window */
 329   if (!XGetGeometry(GDK_DISPLAY(),
 330                     xpixmap, &root_return,
 331                     &x_ret, &y_ret, &w_ret, &h_ret, &bw_ret, &depth_ret))
 332       return NULL;
 333
 334   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 335   draw_impl = GDK_DRAWABLE_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 336   pix_impl = GDK_PIXMAP_IMPL_X11 (GDK_PIXMAP_OBJECT (pixmap)->impl);
 337   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 338
 339
 340   draw_impl->xdisplay = GDK_DISPLAY ();
 341   draw_impl->xid = xpixmap;
 342
 343   pix_impl->is_foreign = TRUE;
 344   pix_impl->width = w_ret;
 345   pix_impl->height = h_ret;
 346   GDK_PIXMAP_OBJECT (pixmap)->depth = depth_ret;
 347
 348   gdk_xid_table_insert(&draw_impl->xid, pixmap);
 349
 350   return pixmap;
 351 }
 352
 353 /**
 354  * gdk_pixmap_lookup:
 355  * @anid: a native pixmap handle.
 356  *
 357  * Looks up the #GdkPixmap that wraps the given native pixmap handle.
 358  *
 359  * For example in the X backend, a native pixmap handle is an Xlib
 360  * <type>XID</type>.
 361  *
 362  * Return value: the #GdkWindow wrapper for the native window,
 363  *    or %NULL if there is none.
 364  **/
 365 GdkPixmap*
 366 gdk_pixmap_lookup (GdkNativeWindow anid)
 367 {
 368   return (GdkPixmap*) gdk_xid_table_lookup (anid);
 369 }