1 files changed, 4 insertions, 59 deletions
diff --git a/WebCore/platform/graphics/gtk/GdkCairoUtilities.cpp b/WebCore/platform/graphics/gtk/GdkCairoUtilities.cpp
index d768ce2..d8018a3 100644
--- a/WebCore/platform/graphics/gtk/GdkCairoUtilities.cpp
+++ b/WebCore/platform/graphics/gtk/GdkCairoUtilities.cpp
@@ -25,70 +25,15 @@
 
 #include "config.h"
 #include "GdkCairoUtilities.h"
+#include "GtkVersioning.h"
 
 #include <cairo.h>
 #include <gtk/gtk.h>
 
-static inline unsigned char* getCairoSurfacePixel(unsigned char* data, unsigned x, unsigned y, unsigned rowStride)
-{
-    return data + (y * rowStride) + x * 4;
-}
-
-static inline guchar* getGdkPixbufPixel(guchar* data, unsigned x, unsigned y, unsigned rowStride)
-{
-    return data + (y * rowStride) + x * 4;
-}
-
 GdkPixbuf* cairoImageSurfaceToGdkPixbuf(cairo_surface_t* surface)
 {
-    int width = cairo_image_surface_get_width(surface);
-    int height = cairo_image_surface_get_height(surface);
-    unsigned char* surfaceData = cairo_image_surface_get_data(surface);
-    int surfaceRowStride = cairo_image_surface_get_stride(surface);
-
-    GdkPixbuf* dest = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
-    if (!dest)
-        return 0;
-
-    guchar* pixbufData = gdk_pixbuf_get_pixels(dest);
-    int pixbufRowStride = gdk_pixbuf_get_rowstride(dest);
-
-    /* From: http://cairographics.org/manual/cairo-image-surface.html#cairo-format-t
-     * "CAIRO_FORMAT_ARGB32: each pixel is a 32-bit quantity, with alpha in
-     * the upper 8 bits, then red, then green, then blue. The 32-bit
-     * quantities are stored native-endian. Pre-multiplied alpha is used.
-     * (That is, 50% transparent red is 0x80800000, not 0x80ff0000.)"
-     *
-     * See http://developer.gimp.org/api/2.0/gdk-pixbuf/gdk-pixbuf-gdk-pixbuf.html#GdkPixbuf
-     * for information on the structure of GdkPixbufs stored with GDK_COLORSPACE_RGB.
-     *
-     * RGB color channels in CAIRO_FORMAT_ARGB32 are stored based on the
-     * endianness of the machine and are also multiplied by the alpha channel.
-     * To properly transfer the data from the Cairo surface we must divide each
-     * of the RGB channels by the alpha channel and then reorder all channels
-     * if this machine is little-endian.
-     */
-    for (int y = 0; y < height; y++) {
-        for (int x = 0; x < width; x++) {
-            unsigned char* source = getCairoSurfacePixel(surfaceData, x, y, surfaceRowStride);
-            guchar* dest = getGdkPixbufPixel(pixbufData, x, y, pixbufRowStride);
-
-#if G_BYTE_ORDER == G_LITTLE_ENDIAN
-            guchar alpha = source[3];
-            dest[0] = alpha ? ((source[2] * 255) / alpha) : 0;
-            dest[1] = alpha ? ((source[1] * 255) / alpha) : 0;
-            dest[2] = alpha ? ((source[0] * 255) / alpha) : 0;
-            dest[3] = alpha;
-#else
-            guchar alpha = source[0];
-            dest[0] = alpha ? ((source[1] * 255) / alpha) : 0;
-            dest[1] = alpha ? ((source[2] * 255) / alpha) : 0;
-            dest[2] = alpha ? ((source[3] * 255) / alpha) : 0;
-            dest[3] = alpha;
-#endif
-        }
-    }
-
-    return dest;
+    return gdk_pixbuf_get_from_surface(surface, 0, 0,
+                                       cairo_image_surface_get_width(surface),
+                                       cairo_image_surface_get_height(surface));
 }