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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "views/drag_utils.h"
#include <gtk/gtk.h>
#include "base/logging.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/base/dragdrop/os_exchange_data_provider_gtk.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/gtk_util.h"
#include "ui/gfx/point.h"
#include "ui/gfx/size.h"
using ui::OSExchangeData;
using ui::OSExchangeDataProviderGtk;
namespace drag_utils {
void SetDragImageOnDataObject(const SkBitmap& bitmap,
const gfx::Size& size,
const gfx::Point& cursor_offset,
OSExchangeData* data_object) {
OSExchangeDataProviderGtk& provider(
static_cast<OSExchangeDataProviderGtk&>(data_object->provider()));
// Convert the bitmap into a GdkPixbuf.
GdkPixbuf* canvas_pixbuf = gfx::GdkPixbufFromSkBitmap(&bitmap);
// Make a new pixbuf of the requested size and copy it over.
GdkPixbuf* pixbuf = gdk_pixbuf_new(
gdk_pixbuf_get_colorspace(canvas_pixbuf),
gdk_pixbuf_get_has_alpha(canvas_pixbuf),
gdk_pixbuf_get_bits_per_sample(canvas_pixbuf),
size.width(),
size.height());
gdk_pixbuf_copy_area(canvas_pixbuf, 0, 0, size.width(), size.height(), pixbuf,
0, 0);
g_object_unref(canvas_pixbuf);
// Set the drag data on to the provider.
provider.SetDragImage(pixbuf, cursor_offset);
g_object_unref(pixbuf);
}
} // namespace drag_utils
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