1 files changed, 86 insertions, 0 deletions
diff --git a/Source/WebCore/platform/gtk/DragImageGtk.cpp b/Source/WebCore/platform/gtk/DragImageGtk.cpp
new file mode 100644
index 0000000..71a65e1
--- /dev/null
+++ b/Source/WebCore/platform/gtk/DragImageGtk.cpp
@@ -0,0 +1,86 @@
+/*
+ * 2010 Igalia S.L
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "config.h"
+#include "DragImage.h"
+
+#include "CachedImage.h"
+#include "Image.h"
+#include "RefPtrCairo.h"
+#include <cairo.h>
+
+namespace WebCore {
+
+IntSize dragImageSize(DragImageRef image)
+{
+    if (image)
+        return IntSize(cairo_image_surface_get_width(image), cairo_image_surface_get_height(image));
+
+    return IntSize(0, 0);
+}
+
+void deleteDragImage(DragImageRef image)
+{
+    if (image)
+        cairo_surface_destroy(image);
+}
+
+DragImageRef scaleDragImage(DragImageRef image, FloatSize scale)
+{
+    if (!image)
+        return 0;
+
+    int newWidth = scale.width() * cairo_image_surface_get_width(image);
+    int newHeight = scale.height() * cairo_image_surface_get_height(image);
+    cairo_surface_t* scaledSurface = cairo_surface_create_similar(image, CAIRO_CONTENT_COLOR_ALPHA, newWidth, newHeight);
+
+    RefPtr<cairo_t> context = adoptRef(cairo_create(scaledSurface));
+    cairo_scale(context.get(), scale.width(), scale.height());
+    cairo_pattern_set_extend(cairo_get_source(context.get()), CAIRO_EXTEND_PAD);
+    cairo_pattern_set_filter(cairo_get_source(context.get()), CAIRO_FILTER_BEST);
+    cairo_set_operator(context.get(), CAIRO_OPERATOR_SOURCE);
+    cairo_set_source_surface(context.get(), image, 0, 0);
+    cairo_paint(context.get());
+
+    deleteDragImage(image);
+    return scaledSurface;
+}
+
+DragImageRef dissolveDragImageToFraction(DragImageRef image, float fraction)
+{
+    if (!image)
+        return 0;
+
+    RefPtr<cairo_t> context = adoptRef(cairo_create(image));
+    cairo_set_operator(context.get(), CAIRO_OPERATOR_DEST_IN);
+    cairo_set_source_rgba(context.get(), 0, 0, 0, fraction);
+    cairo_paint(context.get());
+    return image;
+}
+
+DragImageRef createDragImageFromImage(Image* image)
+{
+    return cairo_surface_reference(image->nativeImageForCurrentFrame());
+}
+
+DragImageRef createDragImageIconForCachedImage(CachedImage*)
+{
+    return 0;
+}
+
+}