gecko-dev/gfx/layers/LayerScope.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GFX_LAYERSCOPE_H
#define GFX_LAYERSCOPE_H

#include <stdint.h>
#include <mozilla/UniquePtr.h>
#include "gfxMatrix.h"
#include "mozilla/gfx/Rect.h"

namespace mozilla {

namespace gl { class GLContext; }

namespace layers {


namespace layerscope { class Packet; }

struct EffectChain;
class LayerComposite;
class TextureHost;

class LayerScope {
public:
    static void DrawBegin();
    static void SetRenderOffset(float aX, float aY);
    static void SetLayerTransform(const gfx::Matrix4x4& aMatrix);
    static void SetDrawRects(size_t aRects,
                             const gfx::Rect* aLayerRects,
                             const gfx::Rect* aTextureRects);
    static void DrawEnd(gl::GLContext* aGLContext,
                        const EffectChain& aEffectChain,
                        int aWidth,
                        int aHeight);

    static void SendLayer(LayerComposite* aLayer,
                          int aWidth,
                          int aHeight);
    static void SendLayerDump(UniquePtr<layerscope::Packet> aPacket);
    static bool CheckSendable();
    static void CleanLayer();
    static void SetHWComposed();

    static void SetPixelScale(double devPixelsPerCSSPixel);
    static void ContentChanged(TextureHost *host);
private:
    static void Init();
};

// Perform BeginFrame and EndFrame automatically
class LayerScopeAutoFrame {
public:
    explicit LayerScopeAutoFrame(int64_t aFrameStamp);
    ~LayerScopeAutoFrame();

private:
    static void BeginFrame(int64_t aFrameStamp);
    static void EndFrame();
};

} // namespace layers
} // namespace mozilla

#endif /* GFX_LAYERSCOPE_H */