gecko-dev/widget/gonk/HwcComposer2D.h

71 lines
2.1 KiB
C++

/*
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef mozilla_HwcComposer2D
#define mozilla_HwcComposer2D
#include "Composer2D.h"
#include "HWComposer.h"
#include "Layers.h"
#include <vector>
#include <list>
namespace mozilla {
namespace layers {
class ContainerLayer;
class Layer;
}
//Holds a dynamically allocated vector of rectangles
//used to decribe the complex visible region of a layer
typedef std::vector<hwc_rect_t> RectVector;
class HwcComposer2D : public android::HWComposer,
public mozilla::layers::Composer2D {
public:
HwcComposer2D();
virtual ~HwcComposer2D();
int Init(hwc_display_t aDisplay, hwc_surface_t aSurface);
bool Initialized() const { return mHwc; }
static HwcComposer2D* GetInstance();
// Returns TRUE if the container has been succesfully rendered
// Returns FALSE if the container cannot be fully rendered
// by this composer so nothing was rendered at all
bool TryRender(layers::Layer* aRoot, const gfxMatrix& aGLWorldTransform) MOZ_OVERRIDE;
private:
bool ReallocLayerList();
bool PrepareLayerList(layers::Layer* aContainer, const nsIntRect& aClip,
const gfxMatrix& aParentTransform, const gfxMatrix& aGLWorldTransform);
hwc_layer_list_t* mList;
nsIntRect mScreenRect;
int mMaxLayerCount;
bool mColorFill;
//Holds all the dynamically allocated RectVectors needed
//to render the current frame
std::list<RectVector> mVisibleRegions;
};
} // namespace mozilla
#endif // mozilla_HwcComposer2D