gfx/2d/DrawTargetOffset.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_DRAWTARGETOFFSET_H_
   8 #define MOZILLA_GFX_DRAWTARGETOFFSET_H_
   9
  10 #include "2D.h"
  11
  12 #include "mozilla/Vector.h"
  13
  14 #include "Filters.h"
  15 #include "Logging.h"
  16
  17 #include <vector>
  18
  19 namespace mozilla {
  20 namespace gfx {
  21
  22 class SourceSurfaceOffset : public SourceSurface {
  23  public:
  24   SourceSurfaceOffset(RefPtr<SourceSurface> aSurface, IntPoint aOffset)
  25       : mSurface(aSurface), mOffset(aOffset) {
  26     MOZ_RELEASE_ASSERT(mSurface);
  27   }
  28
  29   virtual SurfaceType GetType() const override { return SurfaceType::OFFSET; }
  30   virtual IntSize GetSize() const override { return mSurface->GetSize(); }
  31   virtual IntRect GetRect() const override {
  32     return mSurface->GetRect() + mOffset;
  33   }
  34   virtual SurfaceFormat GetFormat() const override {
  35     return mSurface->GetFormat();
  36   }
  37   virtual already_AddRefed<DataSourceSurface> GetDataSurface() override {
  38     return mSurface->GetDataSurface();
  39   }
  40   virtual already_AddRefed<SourceSurface> GetUnderlyingSurface() override {
  41     return mSurface->GetUnderlyingSurface();
  42   }
  43
  44  private:
  45   RefPtr<SourceSurface> mSurface;
  46   IntPoint mOffset;
  47 };
  48
  49 class DrawTargetOffset : public DrawTarget {
  50  public:
  51   DrawTargetOffset();
  52
  53   bool Init(DrawTarget* aDrawTarget, IntPoint aOrigin);
  54
  55   // We'll pestimistically return true here
  56   virtual bool IsTiledDrawTarget() const override { return true; }
  57
  58   virtual DrawTargetType GetType() const override {
  59     return mDrawTarget->GetType();
  60   }
  61   virtual BackendType GetBackendType() const override {
  62     return mDrawTarget->GetBackendType();
  63   }
  64   virtual already_AddRefed<SourceSurface> Snapshot() override;
  65   virtual already_AddRefed<SourceSurface> IntoLuminanceSource(
  66       LuminanceType aLuminanceType, float aOpacity) override;
  67   virtual void DetachAllSnapshots() override;
  68   virtual IntSize GetSize() const override { return mDrawTarget->GetSize(); }
  69   virtual IntRect GetRect() const override {
  70     return mDrawTarget->GetRect() + mOrigin;
  71   }
  72
  73   virtual void Flush() override;
  74   virtual void DrawSurface(SourceSurface* aSurface, const Rect& aDest,
  75                            const Rect& aSource,
  76                            const DrawSurfaceOptions& aSurfOptions,
  77                            const DrawOptions& aOptions) override;
  78   virtual void DrawFilter(FilterNode* aNode, const Rect& aSourceRect,
  79                           const Point& aDestPoint,
  80                           const DrawOptions& aOptions = DrawOptions()) override;
  81   virtual void DrawSurfaceWithShadow(
  82       SourceSurface* aSurface, const Point& aDest, const ShadowOptions& aShadow,
  83       CompositionOp aOperator) override { /* Not implemented */
  84     MOZ_CRASH("GFX: DrawSurfaceWithShadow");
  85   }
  86
  87   virtual void ClearRect(const Rect& aRect) override;
  88   virtual void MaskSurface(
  89       const Pattern& aSource, SourceSurface* aMask, Point aOffset,
  90       const DrawOptions& aOptions = DrawOptions()) override;
  91
  92   virtual void CopySurface(SourceSurface* aSurface, const IntRect& aSourceRect,
  93                            const IntPoint& aDestination) override;
  94
  95   virtual void FillRect(const Rect& aRect, const Pattern& aPattern,
  96                         const DrawOptions& aOptions = DrawOptions()) override;
  97   virtual void FillRoundedRect(
  98       const RoundedRect& aRect, const Pattern& aPattern,
  99       const DrawOptions& aOptions = DrawOptions()) override;
 100   virtual void StrokeRect(const Rect& aRect, const Pattern& aPattern,
 101                           const StrokeOptions& aStrokeOptions = StrokeOptions(),
 102                           const DrawOptions& aOptions = DrawOptions()) override;
 103   virtual void StrokeLine(const Point& aStart, const Point& aEnd,
 104                           const Pattern& aPattern,
 105                           const StrokeOptions& aStrokeOptions = StrokeOptions(),
 106                           const DrawOptions& aOptions = DrawOptions()) override;
 107   virtual void Stroke(const Path* aPath, const Pattern& aPattern,
 108                       const StrokeOptions& aStrokeOptions = StrokeOptions(),
 109                       const DrawOptions& aOptions = DrawOptions()) override;
 110   virtual void Fill(const Path* aPath, const Pattern& aPattern,
 111                     const DrawOptions& aOptions = DrawOptions()) override;
 112   virtual void FillGlyphs(ScaledFont* aFont, const GlyphBuffer& aBuffer,
 113                           const Pattern& aPattern,
 114                           const DrawOptions& aOptions = DrawOptions()) override;
 115   virtual void StrokeGlyphs(
 116       ScaledFont* aFont, const GlyphBuffer& aBuffer, const Pattern& aPattern,
 117       const StrokeOptions& aStrokeOptions = StrokeOptions(),
 118       const DrawOptions& aOptions = DrawOptions()) override;
 119   virtual void Mask(const Pattern& aSource, const Pattern& aMask,
 120                     const DrawOptions& aOptions = DrawOptions()) override;
 121   virtual void PushClip(const Path* aPath) override;
 122   virtual void PushClipRect(const Rect& aRect) override;
 123   virtual void PopClip() override;
 124   virtual void PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
 125                          const Matrix& aMaskTransform,
 126                          const IntRect& aBounds = IntRect(),
 127                          bool aCopyBackground = false) override;
 128   virtual void PushLayerWithBlend(
 129       bool aOpaque, Float aOpacity, SourceSurface* aMask,
 130       const Matrix& aMaskTransform, const IntRect& aBounds = IntRect(),
 131       bool aCopyBackground = false,
 132       CompositionOp = CompositionOp::OP_OVER) override;
 133   virtual bool Draw3DTransformedSurface(SourceSurface* aSurface,
 134                                         const Matrix4x4& aMatrix) override;
 135   virtual void PopLayer() override;
 136
 137   virtual void SetTransform(const Matrix& aTransform) override;
 138
 139   virtual void SetPermitSubpixelAA(bool aPermitSubpixelAA) override;
 140
 141   virtual already_AddRefed<SourceSurface> CreateSourceSurfaceFromData(
 142       unsigned char* aData, const IntSize& aSize, int32_t aStride,
 143       SurfaceFormat aFormat) const override {
 144     return mDrawTarget->CreateSourceSurfaceFromData(aData, aSize, aStride,
 145                                                     aFormat);
 146   }
 147   virtual already_AddRefed<SourceSurface> OptimizeSourceSurface(
 148       SourceSurface* aSurface) const override {
 149     return mDrawTarget->OptimizeSourceSurface(aSurface);
 150   }
 151
 152   virtual already_AddRefed<SourceSurface> CreateSourceSurfaceFromNativeSurface(
 153       const NativeSurface& aSurface) const override {
 154     return mDrawTarget->CreateSourceSurfaceFromNativeSurface(aSurface);
 155   }
 156
 157   virtual already_AddRefed<DrawTarget> CreateSimilarDrawTarget(
 158       const IntSize& aSize, SurfaceFormat aFormat) const override {
 159     return mDrawTarget->CreateSimilarDrawTarget(aSize, aFormat);
 160   }
 161
 162   virtual bool CanCreateSimilarDrawTarget(
 163       const IntSize& aSize, SurfaceFormat aFormat) const override {
 164     return mDrawTarget->CanCreateSimilarDrawTarget(aSize, aFormat);
 165   }
 166   virtual RefPtr<DrawTarget> CreateClippedDrawTarget(
 167       const Rect& aBounds, SurfaceFormat aFormat) override;
 168
 169   virtual already_AddRefed<PathBuilder> CreatePathBuilder(
 170       FillRule aFillRule = FillRule::FILL_WINDING) const override {
 171     return mDrawTarget->CreatePathBuilder(aFillRule);
 172   }
 173
 174   virtual already_AddRefed<GradientStops> CreateGradientStops(
 175       GradientStop* aStops, uint32_t aNumStops,
 176       ExtendMode aExtendMode = ExtendMode::CLAMP) const override {
 177     return mDrawTarget->CreateGradientStops(aStops, aNumStops, aExtendMode);
 178   }
 179   virtual already_AddRefed<FilterNode> CreateFilter(FilterType aType) override {
 180     return mDrawTarget->CreateFilter(aType);
 181   }
 182
 183  private:
 184   RefPtr<DrawTarget> mDrawTarget;
 185   IntPoint mOrigin;
 186 };
 187
 188 }  // namespace gfx
 189 }  // namespace mozilla
 190
 191 #endif