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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 PPAPI_CPP_GRAPHICS_2D_H_
#define PPAPI_CPP_GRAPHICS_2D_H_
#include "ppapi/c/pp_stdint.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/size.h"
namespace pp {
class CompletionCallback;
class ImageData;
class Point;
class Rect;
class Graphics2D : public Resource {
public:
// Creates an is_null() ImageData object.
Graphics2D();
// The copied context will refer to the original (since this is just a wrapper
// around a refcounted resource).
Graphics2D(const Graphics2D& other);
// Allocates a new 2D graphics context with the given size in the browser,
// resulting object will be is_null() if the allocation failed.
Graphics2D(const Size& size, bool is_always_opaque);
virtual ~Graphics2D();
Graphics2D& operator=(const Graphics2D& other);
void swap(Graphics2D& other);
const Size& size() const { return size_; }
// Enqueues paint or scroll commands. THIS COMMAND HAS NO EFFECT UNTIL YOU
// CALL Flush().
//
// If you call the version with no source rect, the entire image will be
// painted.
//
// Please see PPB_Graphics2D.PaintImageData / .Scroll for more details.
void PaintImageData(const ImageData& image,
const Point& top_left);
void PaintImageData(const ImageData& image,
const Point& top_left,
const Rect& src_rect);
void Scroll(const Rect& clip, const Point& amount);
// The browser will take ownership of the given image data. The object
// pointed to by the parameter will be cleared. To avoid horrible artifacts,
// you should also not use any other ImageData objects referring to the same
// resource will no longer be usable. THIS COMMAND HAS NO EFFECT UNTIL YOU
// CALL Flush().
//
// Please see PPB_Graphics2D.ReplaceContents for more details.
void ReplaceContents(ImageData* image);
// Flushes all the currently enqueued Paint, Scroll, and Replace commands.
// Can be used in synchronous mode (NULL callback pointer) from background
// threads.
//
// Please see PPB_Graphics2D.Flush for more details.
int32_t Flush(const CompletionCallback& cc);
private:
Size size_;
};
} // namespace pp
#endif // PPAPI_CPP_GRAPHICS_2D_H_
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