Pileus Git - ~andy/gtk/blob - gdk/quartz/gdkpixmap-quartz.c

   1 /* gdkpixmap-quartz.c
   2  *
   3  * Copyright (C) 2005 Imendio AB
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include "gdkpixmap.h"
  24 #include "gdkprivate-quartz.h"
  25
  26 static gpointer parent_class;
  27
  28 static void
  29 gdk_pixmap_impl_quartz_init (GdkPixmapImplQuartz *impl)
  30 {
  31 }
  32
  33 static void
  34 gdk_pixmap_impl_quartz_get_size (GdkDrawable *drawable,
  35                                 gint        *width,
  36                                 gint        *height)
  37 {
  38   if (width)
  39     *width = GDK_PIXMAP_IMPL_QUARTZ (drawable)->width;
  40   if (height)
  41     *height = GDK_PIXMAP_IMPL_QUARTZ (drawable)->height;
  42 }
  43
  44 static CGContextRef
  45 gdk_pixmap_impl_quartz_get_context (GdkDrawable *drawable,
  46                                     gboolean     antialias)
  47 {
  48   GdkPixmapImplQuartz *impl = GDK_PIXMAP_IMPL_QUARTZ (drawable);
  49   CGContextRef cg_context;
  50   size_t height;
  51
  52   cg_context = CGBitmapContextCreate (impl->data,
  53                                       CGImageGetWidth (impl->image),
  54                                       CGImageGetHeight (impl->image),
  55                                       CGImageGetBitsPerComponent (impl->image),
  56                                       CGImageGetBytesPerRow (impl->image),
  57                                       CGImageGetColorSpace (impl->image),
  58                                       CGImageGetBitmapInfo (impl->image));
  59   CGContextSetAllowsAntialiasing (cg_context, antialias);
  60
  61   /* convert coordinates from core graphics to gtk+ */
  62   height = CGImageGetHeight (impl->image);
  63
  64   CGContextTranslateCTM (cg_context, 0, height);
  65   CGContextScaleCTM (cg_context, 1.0, -1.0);
  66
  67   return cg_context;
  68 }
  69
  70 static void
  71 gdk_pixmap_impl_quartz_finalize (GObject *object)
  72 {
  73   GdkPixmapImplQuartz *impl = GDK_PIXMAP_IMPL_QUARTZ (object);
  74
  75   CGImageRelease (impl->image);
  76
  77   _gdk_quartz_drawable_finish (GDK_DRAWABLE (impl));
  78
  79   G_OBJECT_CLASS (parent_class)->finalize (object);
  80 }
  81
  82 static void
  83 gdk_pixmap_impl_quartz_class_init (GdkPixmapImplQuartzClass *klass)
  84 {
  85   GObjectClass *object_class = G_OBJECT_CLASS (klass);
  86   GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
  87   GdkDrawableImplQuartzClass *drawable_quartz_class = GDK_DRAWABLE_IMPL_QUARTZ_CLASS (klass);
  88
  89   parent_class = g_type_class_peek_parent (klass);
  90
  91   object_class->finalize = gdk_pixmap_impl_quartz_finalize;
  92
  93   drawable_class->get_size = gdk_pixmap_impl_quartz_get_size;
  94
  95   drawable_quartz_class->get_context = gdk_pixmap_impl_quartz_get_context;
  96 }
  97
  98 GType
  99 _gdk_pixmap_impl_quartz_get_type (void)
 100 {
 101   static GType object_type = 0;
 102
 103   if (!object_type)
 104     {
 105       static const GTypeInfo object_info =
 106       {
 107         sizeof (GdkPixmapImplQuartzClass),
 108         (GBaseInitFunc) NULL,
 109         (GBaseFinalizeFunc) NULL,
 110         (GClassInitFunc) gdk_pixmap_impl_quartz_class_init,
 111         NULL,           /* class_finalize */
 112         NULL,           /* class_data */
 113         sizeof (GdkPixmapImplQuartz),
 114         0,              /* n_preallocs */
 115         (GInstanceInitFunc) gdk_pixmap_impl_quartz_init
 116       };
 117
 118       object_type = g_type_register_static (GDK_TYPE_DRAWABLE_IMPL_QUARTZ,
 119                                             "GdkPixmapImplQuartz",
 120                                             &object_info,
 121                                             0);
 122     }
 123
 124   return object_type;
 125 }
 126
 127 GType
 128 _gdk_pixmap_impl_get_type (void)
 129 {
 130   return _gdk_pixmap_impl_quartz_get_type ();
 131 }
 132
 133 static void
 134 data_provider_release (void *info, const void *data, size_t size)
 135 {
 136   g_free (info);
 137 }
 138
 139 GdkPixmap*
 140 _gdk_pixmap_new (GdkDrawable *drawable,
 141                  gint         width,
 142                  gint         height,
 143                  gint         depth)
 144 {
 145   GdkPixmap *pixmap;
 146   GdkDrawableImplQuartz *draw_impl;
 147   GdkPixmapImplQuartz *pix_impl;
 148   gint window_depth;
 149   CGColorSpaceRef colorspace;
 150   CGDataProviderRef data_provider;
 151   CGImageAlphaInfo alpha_info;
 152   gint bytes_per_row, bits_per_pixel;
 153
 154   g_return_val_if_fail (drawable == NULL || GDK_IS_DRAWABLE (drawable), NULL);
 155   g_return_val_if_fail ((drawable != NULL) || (depth != -1), NULL);
 156   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 157
 158   if (GDK_IS_WINDOW (drawable) && GDK_WINDOW_DESTROYED (drawable))
 159     return NULL;
 160
 161   if (!drawable)
 162     drawable = gdk_screen_get_root_window (gdk_screen_get_default ());
 163
 164   window_depth = gdk_drawable_get_depth (GDK_DRAWABLE (drawable));
 165
 166   if (depth == -1)
 167     depth = window_depth;
 168
 169   switch (depth)
 170     {
 171     case 24:
 172       alpha_info = kCGImageAlphaNoneSkipLast;
 173       bytes_per_row = width * 4;
 174       bits_per_pixel = 32;
 175       colorspace = CGColorSpaceCreateDeviceRGB ();
 176       break;
 177     case 32:
 178       alpha_info = kCGImageAlphaPremultipliedFirst;
 179       bytes_per_row = width * 4;
 180       bits_per_pixel = 32;
 181       colorspace = CGColorSpaceCreateDeviceRGB ();
 182       break;
 183     case 1:
 184       alpha_info = kCGImageAlphaNone;
 185       bytes_per_row = width;
 186       bits_per_pixel = 8;
 187       colorspace = CGColorSpaceCreateDeviceGray ();
 188       break;
 189     default:
 190       g_warning ("Unsupported bit depth %d\n", depth);
 191       return NULL;
 192     }
 193
 194   pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
 195   draw_impl = GDK_DRAWABLE_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (pixmap)->impl);
 196   pix_impl = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (pixmap)->impl);
 197   draw_impl->wrapper = GDK_DRAWABLE (pixmap);
 198
 199   g_assert (depth == 24 || depth == 32 || depth == 1);
 200
 201   pix_impl->data = g_malloc (height * bytes_per_row);
 202   data_provider = CGDataProviderCreateWithData (pix_impl->data, pix_impl->data,
 203                                                 height * bytes_per_row, data_provider_release);
 204   pix_impl->image = CGImageCreate (width, height, 8, bits_per_pixel,
 205                                    bytes_per_row, colorspace,
 206                                    alpha_info,
 207                                    data_provider, NULL, FALSE,
 208                                    kCGRenderingIntentDefault);
 209   CGDataProviderRelease (data_provider);
 210   CGColorSpaceRelease (colorspace);
 211
 212   pix_impl->width = width;
 213   pix_impl->height = height;
 214   GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
 215
 216   if (depth == window_depth) {
 217     GdkColormap *colormap = gdk_drawable_get_colormap (drawable);
 218
 219     if (colormap)
 220       gdk_drawable_set_colormap (pixmap, colormap);
 221   }
 222
 223   return pixmap;
 224 }
 225
 226 GdkPixmap *
 227 _gdk_bitmap_create_from_data (GdkDrawable *window,
 228                               const gchar *data,
 229                               gint         width,
 230                               gint         height)
 231 {
 232   GdkPixmap *pixmap;
 233   GdkPixmapImplQuartz *impl;
 234   int x, y, bpl;
 235
 236   g_return_val_if_fail (data != NULL, NULL);
 237   g_return_val_if_fail ((width != 0) && (height != 0), NULL);
 238   g_return_val_if_fail (window == NULL || GDK_IS_DRAWABLE (window), NULL);
 239
 240   pixmap = gdk_pixmap_new (window, width, height, 1);
 241   impl = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (pixmap)->impl);
 242
 243   g_assert (CGImageGetBytesPerRow (impl->image) == width);
 244
 245   /* Bytes per line: Each line consumes an integer number of bytes, possibly
 246    * ignoring any excess bits. */
 247   bpl = (width + 7) / 8;
 248   for (y = 0; y < height; y++)
 249     {
 250       guchar *dst = impl->data + y * width;
 251       const gchar *src = data + (y * bpl);
 252       for (x = 0; x < width; x++)
 253         {
 254           if ((src[x / 8] >> x % 8) & 1)
 255             *dst = 0xff;
 256           else
 257             *dst = 0;
 258
 259           dst++;
 260         }
 261     }
 262
 263   return pixmap;
 264 }
 265
 266 GdkPixmap*
 267 _gdk_pixmap_create_from_data (GdkDrawable    *drawable,
 268                               const gchar    *data,
 269                               gint            width,
 270                               gint            height,
 271                               gint            depth,
 272                               const GdkColor *fg,
 273                               const GdkColor *bg)
 274 {
 275   /* FIXME: Implement */
 276   return NULL;
 277 }
 278
 279 GdkPixmap *
 280 gdk_pixmap_foreign_new_for_display (GdkDisplay      *display,
 281                                     GdkNativeWindow  anid)
 282 {
 283   return NULL;
 284 }
 285
 286 GdkPixmap*
 287 gdk_pixmap_foreign_new (GdkNativeWindow anid)
 288 {
 289    return NULL;
 290 }
 291
 292 GdkPixmap *
 293 gdk_pixmap_foreign_new_for_screen (GdkScreen       *screen,
 294                                    GdkNativeWindow  anid,
 295                                    gint             width,
 296                                    gint             height,
 297                                    gint             depth)
 298 {
 299   return NULL;
 300 }
 301
 302 GdkPixmap*
 303 gdk_pixmap_lookup (GdkNativeWindow anid)
 304 {
 305   return NULL;
 306 }
 307
 308 GdkPixmap*
 309 gdk_pixmap_lookup_for_display (GdkDisplay *display, GdkNativeWindow anid)
 310 {
 311   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
 312   return NULL;
 313 }