// Copyright 2013 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 SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_
#define SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "skia/ext/platform_device.h"
namespace skia {
// -----------------------------------------------------------------------------
// For now we just use SkBitmap for SkBitmapDevice
//
// This is all quite ok for test_shell. In the future we will want to use
// shared memory between the renderer and the main process at least. In this
// case we'll probably create the buffer from a precreated region of memory.
// -----------------------------------------------------------------------------
class BitmapPlatformDevice : public SkBitmapDevice, public PlatformDevice {
public:
// Construct a BitmapPlatformDevice. |is_opaque| should be set if the caller
// knows the bitmap will be completely opaque and allows some optimizations.
// The bitmap is not initialized.
static BitmapPlatformDevice* Create(int width, int height, bool is_opaque);
// Construct a BitmapPlatformDevice, as above.
// If |is_opaque| is false, the bitmap is initialized to 0.
static BitmapPlatformDevice* CreateAndClear(int width, int height,
bool is_opaque);
// This doesn't take ownership of |data|. If |data| is null, the bitmap
// is not initialized to 0.
static BitmapPlatformDevice* Create(int width, int height, bool is_opaque,
uint8_t* data);
// Create a BitmapPlatformDevice from an already constructed bitmap;
// you should probably be using Create(). This may become private later if
// we ever have to share state between some native drawing UI and Skia, like
// the Windows and Mac versions of this class do.
explicit BitmapPlatformDevice(const SkBitmap& other);
virtual ~BitmapPlatformDevice();
virtual PlatformSurface BeginPlatformPaint() OVERRIDE;
virtual void DrawToNativeContext(PlatformSurface surface, int x, int y,
const PlatformRect* src_rect) OVERRIDE;
protected:
virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info,
Usage usage) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(BitmapPlatformDevice);
};
} // namespace skia
#endif // SKIA_EXT_BITMAP_PLATFORM_DEVICE_SKIA_H_