DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (31ec81b5d7bb)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 MOZILLA_GFX_BASICCOMPOSITOR_H
#define MOZILLA_GFX_BASICCOMPOSITOR_H

#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/gfx/2D.h"

namespace mozilla {
namespace layers {

class BasicCompositingRenderTarget : public CompositingRenderTarget
{
public:
  BasicCompositingRenderTarget(gfx::DrawTarget* aDrawTarget, const gfx::IntSize& aSize)
    : mDrawTarget(aDrawTarget)
    , mSize(aSize)
  { }

  virtual gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }

  virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
  {
    return mDrawTarget ? mDrawTarget->GetFormat()
                       : gfx::FORMAT_UNKNOWN;
  }

  RefPtr<gfx::DrawTarget> mDrawTarget;
  gfx::IntSize mSize;
};

class BasicCompositor : public Compositor
{
public:
  BasicCompositor(nsIWidget *aWidget);

  virtual ~BasicCompositor();


  virtual bool Initialize() MOZ_OVERRIDE { return true; };

  virtual void Destroy() MOZ_OVERRIDE;

  virtual TextureFactoryIdentifier GetTextureFactoryIdentifier() MOZ_OVERRIDE
  {
    return TextureFactoryIdentifier(LAYERS_BASIC,
                                    XRE_GetProcessType(),
                                    GetMaxTextureSize());
  }

  virtual TemporaryRef<CompositingRenderTarget>
  CreateRenderTarget(const gfx::IntRect &aRect, SurfaceInitMode aInit) MOZ_OVERRIDE;

  virtual TemporaryRef<CompositingRenderTarget>
  CreateRenderTargetFromSource(const gfx::IntRect &aRect,
                               const CompositingRenderTarget *aSource) MOZ_OVERRIDE;

  virtual TemporaryRef<DataTextureSource>
  CreateDataTextureSource(TextureFlags aFlags = 0) MOZ_OVERRIDE;

  virtual bool SupportsEffect(EffectTypes aEffect) MOZ_OVERRIDE;

  virtual void SetRenderTarget(CompositingRenderTarget *aSource) MOZ_OVERRIDE
  {
    mRenderTarget = static_cast<BasicCompositingRenderTarget*>(aSource);
  }
  virtual CompositingRenderTarget* GetCurrentRenderTarget() MOZ_OVERRIDE
  {
    return mRenderTarget;
  }

  virtual void DrawQuad(const gfx::Rect& aRect, const gfx::Rect& aClipRect,
                        const EffectChain &aEffectChain,
                        gfx::Float aOpacity, const gfx::Matrix4x4 &aTransform,
                        const gfx::Point& aOffset) MOZ_OVERRIDE;

  virtual void BeginFrame(const gfx::Rect *aClipRectIn,
                          const gfxMatrix& aTransform,
                          const gfx::Rect& aRenderBounds,
                          gfx::Rect *aClipRectOut = nullptr,
                          gfx::Rect *aRenderBoundsOut = nullptr) MOZ_OVERRIDE;
  virtual void EndFrame() MOZ_OVERRIDE;
  virtual void EndFrameForExternalComposition(const gfxMatrix& aTransform) MOZ_OVERRIDE
  {
    NS_RUNTIMEABORT("We shouldn't ever hit this");
  }
  virtual void AbortFrame() MOZ_OVERRIDE;

  virtual bool SupportsPartialTextureUpdate() { return true; }
  virtual bool CanUseCanvasLayerForSize(const gfxIntSize &aSize) MOZ_OVERRIDE { return true; }
  virtual int32_t GetMaxTextureSize() const MOZ_OVERRIDE { return INT32_MAX; }
  virtual void SetDestinationSurfaceSize(const gfx::IntSize& aSize) MOZ_OVERRIDE { }
  virtual void SetTargetContext(gfxContext* aTarget) MOZ_OVERRIDE
  {
    mCopyTarget = aTarget;
  }
  
  virtual void SetScreenRenderOffset(const ScreenPoint& aOffset) MOZ_OVERRIDE {
  }

  virtual void MakeCurrent(MakeCurrentFlags aFlags = 0) { }

  virtual void PrepareViewport(const gfx::IntSize& aSize,
                               const gfxMatrix& aWorldTransform) MOZ_OVERRIDE { }

  virtual void NotifyLayersTransaction() MOZ_OVERRIDE { }

  virtual const char* Name() const { return "Basic"; }

  virtual nsIWidget* GetWidget() const MOZ_OVERRIDE { return mWidget; }
  virtual const nsIntSize& GetWidgetSize() MOZ_OVERRIDE
  {
    return mWidgetSize;
  }

  gfx::DrawTarget *GetDrawTarget() { return mDrawTarget; }

private:
  // Widget associated with this compositor
  nsIWidget *mWidget;
  nsIntSize mWidgetSize;

  // The final destination surface
  RefPtr<gfx::DrawTarget> mDrawTarget;
  // The current render target for drawing
  RefPtr<BasicCompositingRenderTarget> mRenderTarget;
  // An optional destination target to copy the results
  // to after drawing is completed.
  nsRefPtr<gfxContext> mCopyTarget;
};

} // namespace layers
} // namespace mozilla

#endif /* MOZILLA_GFX_BASICCOMPOSITOR_H */