gfx/layers/TextureDIB.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef MOZILLA_GFX_TEXTUREDIB_H
   7 #define MOZILLA_GFX_TEXTUREDIB_H
   8
   9 #include "mozilla/layers/Compositor.h"
  10 #include "mozilla/layers/TextureClient.h"
  11 #include "mozilla/layers/TextureHost.h"
  12 #include "mozilla/GfxMessageUtils.h"
  13 #include "gfxWindowsPlatform.h"
  14
  15 namespace mozilla {
  16 namespace layers {
  17
  18 /**
  19   * Can only be drawn into through Cairo.
  20   * Prefer CairoTextureClient when possible.
  21   * The coresponding TextureHost depends on the compositor
  22   */
  23 class DIBTextureClient : public TextureClient
  24 {
  25 public:
  26   DIBTextureClient(ISurfaceAllocator* aAllocator,
  27                    gfx::SurfaceFormat aFormat,
  28                    TextureFlags aFlags);
  29
  30   virtual ~DIBTextureClient();
  31
  32   // TextureClient
  33
  34   virtual bool IsAllocated() const MOZ_OVERRIDE { return !!mSurface; }
  35
  36   virtual bool Lock(OpenMode aOpenMode) MOZ_OVERRIDE;
  37
  38   virtual void Unlock() MOZ_OVERRIDE;
  39
  40   virtual bool IsLocked() const MOZ_OVERRIDE{ return mIsLocked; }
  41
  42   virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
  43
  44   virtual gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }
  45
  46   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE { return mFormat; }
  47
  48   virtual bool CanExposeDrawTarget() const MOZ_OVERRIDE { return true; }
  49
  50   virtual gfx::DrawTarget* BorrowDrawTarget() MOZ_OVERRIDE;
  51
  52   virtual bool AllocateForSurface(gfx::IntSize aSize,
  53     TextureAllocationFlags aFlags = ALLOC_DEFAULT) MOZ_OVERRIDE;
  54
  55   virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return true; }
  56
  57   virtual TemporaryRef<TextureClient>
  58   CreateSimilar(TextureFlags aFlags = TextureFlags::DEFAULT,
  59                 TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const MOZ_OVERRIDE;
  60
  61 protected:
  62   nsRefPtr<gfxWindowsSurface> mSurface;
  63   RefPtr<gfx::DrawTarget> mDrawTarget;
  64   gfx::IntSize mSize;
  65   gfx::SurfaceFormat mFormat;
  66   bool mIsLocked;
  67 };
  68
  69 class DIBTextureHost : public TextureHost
  70 {
  71 public:
  72   DIBTextureHost(TextureFlags aFlags,
  73                  const SurfaceDescriptorDIB& aDescriptor);
  74
  75   virtual TextureSource* GetTextureSources() MOZ_OVERRIDE;
  76
  77   virtual void DeallocateDeviceData() MOZ_OVERRIDE;
  78
  79   virtual void SetCompositor(Compositor* aCompositor) MOZ_OVERRIDE;
  80
  81   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE { return mFormat; }
  82
  83   virtual gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }
  84
  85   virtual bool Lock() MOZ_OVERRIDE;
  86
  87   virtual void Unlock() MOZ_OVERRIDE;
  88
  89   virtual void Updated(const nsIntRegion* aRegion = nullptr) MOZ_OVERRIDE;
  90
  91   virtual TemporaryRef<gfx::DataSourceSurface> GetAsSurface() MOZ_OVERRIDE
  92   {
  93     return nullptr; // TODO: cf bug 872568
  94   }
  95
  96 protected:
  97   nsRefPtr<gfxWindowsSurface> mSurface;
  98   RefPtr<DataTextureSource> mTextureSource;
  99   RefPtr<Compositor> mCompositor;
 100   gfx::SurfaceFormat mFormat;
 101   gfx::IntSize mSize;
 102   bool mIsLocked;
 103 };
 104
 105 }
 106 }
 107
 108 #endif /* MOZILLA_GFX_TEXTUREDIB_H */