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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.
#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_
#define WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_
#include <vector>
#include "base/basictypes.h"
#include "third_party/ppapi/c/ppb_device_context_2d.h"
#include "third_party/WebKit/WebKit/chromium/public/WebCanvas.h"
#include "webkit/glue/plugins/pepper_resource.h"
typedef struct _ppb_DeviceContext2D PPB_DeviceContext2D;
namespace gfx {
class Rect;
}
namespace pepper {
class ImageData;
class PluginModule;
class DeviceContext2D : public Resource {
public:
DeviceContext2D(PluginModule* module);
virtual ~DeviceContext2D();
// Returns a pointer to the interface implementing PPB_ImageData that is
// exposed to the plugin.
static const PPB_DeviceContext2D* GetInterface();
bool Init(int width, int height, bool is_always_opaque);
// Resource override.
virtual DeviceContext2D* AsDeviceContext2D() { return this; }
// PPB_DeviceContext2D functions.
bool PaintImageData(PP_Resource image,
int32_t x, int32_t y,
const PP_Rect* src_rect);
bool Scroll(const PP_Rect* clip_rect, int32_t dx, int32_t dy);
bool ReplaceContents(PP_Resource image);
bool Flush(PPB_DeviceContext2D_FlushCallback callback,
void* callback_data);
void Paint(WebKit::WebCanvas* canvas,
const gfx::Rect& plugin_rect,
const gfx::Rect& paint_rect);
private:
// Called internally to execute the different queued commands. The
// parameters to these functions will have already been validated.
void ExecutePaintImageData(const ImageData* image,
int x, int y,
const gfx::Rect& src_rect);
void ExecuteScroll(const gfx::Rect& clip, int dx, int dy);
void ExecuteReplaceContents(ImageData* image);
scoped_refptr<ImageData> image_data_;
// Keeps track of all drawing commands queued before a Flush call.
struct QueuedOperation;
typedef std::vector<QueuedOperation> OperationQueue;
OperationQueue queued_operations_;
DISALLOW_COPY_AND_ASSIGN(DeviceContext2D);
};
} // namespace pepper
#endif // WEBKIT_GLUE_PLUGINS_PEPPER_DEVICE_CONTEXT_2D_H_
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