Source code

Revision control

Other Tools

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_DRAWTARGETCAPTURE_H_
#define MOZILLA_GFX_DRAWTARGETCAPTURE_H_
#include <vector>
#include <stack>
#include "2D.h"
#include "CaptureCommandList.h"
#include "Filters.h"
namespace mozilla {
namespace gfx {
class DrawingCommand;
class SourceSurfaceCapture;
class AlphaBoxBlur;
class DrawTargetCaptureImpl final : public DrawTargetCapture {
friend class SourceSurfaceCapture;
public:
DrawTargetCaptureImpl(gfx::DrawTarget* aTarget, size_t aFlushBytes);
DrawTargetCaptureImpl(BackendType aBackend, const IntSize& aSize,
SurfaceFormat aFormat);
bool Init(const IntSize& aSize, DrawTarget* aRefDT);
void InitForData(int32_t aStride, size_t aSurfaceAllocationSize);
BackendType GetBackendType() const override {
return mRefDT->GetBackendType();
}
DrawTargetType GetType() const override { return mRefDT->GetType(); }
bool IsCaptureDT() const override { return true; }
already_AddRefed<SourceSurface> Snapshot() override;
already_AddRefed<SourceSurface> IntoLuminanceSource(
LuminanceType aLuminanceType, float aOpacity) override;
void SetPermitSubpixelAA(bool aPermitSubpixelAA) override;
void DetachAllSnapshots() override;
IntSize GetSize() const override { return mSize; }
void Flush() override {}
void DrawSurface(SourceSurface* aSurface, const Rect& aDest,
const Rect& aSource, const DrawSurfaceOptions& aSurfOptions,
const DrawOptions& aOptions) override;
void DrawFilter(FilterNode* aNode, const Rect& aSourceRect,
const Point& aDestPoint,
const DrawOptions& aOptions = DrawOptions()) override;
void DrawSurfaceWithShadow(SourceSurface* aSurface, const Point& aDest,
const DeviceColor& aColor, const Point& aOffset,
Float aSigma, CompositionOp aOperator) override;
void ClearRect(const Rect& aRect) override;
void MaskSurface(const Pattern& aSource, SourceSurface* aMask, Point aOffset,
const DrawOptions& aOptions = DrawOptions()) override;
void CopySurface(SourceSurface* aSurface, const IntRect& aSourceRect,
const IntPoint& aDestination) override;
void CopyRect(const IntRect& aSourceRect,
const IntPoint& aDestination) override;
void FillRect(const Rect& aRect, const Pattern& aPattern,
const DrawOptions& aOptions = DrawOptions()) override;
void FillRoundedRect(const RoundedRect& aRect, const Pattern& aPattern,
const DrawOptions& aOptions = DrawOptions()) override;
void StrokeRect(const Rect& aRect, const Pattern& aPattern,
const StrokeOptions& aStrokeOptions = StrokeOptions(),
const DrawOptions& aOptions = DrawOptions()) override;
void StrokeLine(const Point& aStart, const Point& aEnd,
const Pattern& aPattern,
const StrokeOptions& aStrokeOptions = StrokeOptions(),
const DrawOptions& aOptions = DrawOptions()) override;
void Stroke(const Path* aPath, const Pattern& aPattern,
const StrokeOptions& aStrokeOptions = StrokeOptions(),
const DrawOptions& aOptions = DrawOptions()) override;
void Fill(const Path* aPath, const Pattern& aPattern,
const DrawOptions& aOptions = DrawOptions()) override;
void FillGlyphs(ScaledFont* aFont, const GlyphBuffer& aBuffer,
const Pattern& aPattern,
const DrawOptions& aOptions = DrawOptions()) override;
void StrokeGlyphs(ScaledFont* aFont, const GlyphBuffer& aBuffer,
const Pattern& aPattern,
const StrokeOptions& aStrokeOptions = StrokeOptions(),
const DrawOptions& aOptions = DrawOptions()) override;
void Mask(const Pattern& aSource, const Pattern& aMask,
const DrawOptions& aOptions = DrawOptions()) override;
void PushClip(const Path* aPath) override;
void PushClipRect(const Rect& aRect) override;
void PopClip() override;
void PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
const Matrix& aMaskTransform, const IntRect& aBounds,
bool aCopyBackground) override;
void PopLayer() override;
void Blur(const AlphaBoxBlur& aBlur) override;
void PadEdges(const IntRegion& aRegion) override;
void SetTransform(const Matrix& aTransform) override;
bool SupportsRegionClipping() const override {
return mRefDT->SupportsRegionClipping();
}
already_AddRefed<SourceSurface> CreateSourceSurfaceFromData(
unsigned char* aData, const IntSize& aSize, int32_t aStride,
SurfaceFormat aFormat) const override {
return mRefDT->CreateSourceSurfaceFromData(aData, aSize, aStride, aFormat);
}
already_AddRefed<SourceSurface> OptimizeSourceSurface(
SourceSurface* aSurface) const override;
already_AddRefed<SourceSurface> CreateSourceSurfaceFromNativeSurface(
const NativeSurface& aSurface) const override {
return mRefDT->CreateSourceSurfaceFromNativeSurface(aSurface);
}
already_AddRefed<DrawTarget> CreateSimilarDrawTarget(
const IntSize& aSize, SurfaceFormat aFormat) const override;
RefPtr<DrawTarget> CreateSimilarRasterTarget(
const IntSize& aSize, SurfaceFormat aFormat) const override;
RefPtr<DrawTarget> CreateClippedDrawTarget(const Rect& aBounds,
SurfaceFormat aFormat) override;
already_AddRefed<PathBuilder> CreatePathBuilder(
FillRule aFillRule = FillRule::FILL_WINDING) const override;
already_AddRefed<GradientStops> CreateGradientStops(
GradientStop* aStops, uint32_t aNumStops,
ExtendMode aExtendMode = ExtendMode::CLAMP) const override {
return mRefDT->CreateGradientStops(aStops, aNumStops, aExtendMode);
}
already_AddRefed<FilterNode> CreateFilter(FilterType aType) override;
void ReplayToDrawTarget(DrawTarget* aDT, const Matrix& aTransform);
bool IsEmpty() const override;
void Dump() override;
protected:
virtual ~DrawTargetCaptureImpl();
void MarkChanged();
private:
void FlushCommandBuffer() {
ReplayToDrawTarget(mRefDT, Matrix());
mCommands.Clear();
}
// This storage system was used to minimize the amount of heap allocations
// that are required while recording. It should be noted there's no
// guarantees on the alignments of DrawingCommands allocated in this array.
template <typename T>
T* AppendToCommandList() {
if (T::AffectsSnapshot) {
MarkChanged();
}
if (mFlushBytes && mCommands.BufferWillAlloc<T>() &&
mCommands.BufferCapacity() > mFlushBytes) {
FlushCommandBuffer();
}
return mCommands.Append<T>();
}
template <typename T>
T* ReuseOrAppendToCommandList() {
if (T::AffectsSnapshot) {
MarkChanged();
}
if (mFlushBytes && mCommands.BufferWillAlloc<T>() &&
mCommands.BufferCapacity() > mFlushBytes) {
FlushCommandBuffer();
}
return mCommands.ReuseOrAppend<T>();
}
RefPtr<DrawTarget> mRefDT;
IntSize mSize;
RefPtr<SourceSurfaceCapture> mSnapshot;
// These are set if the draw target must be explicitly backed by data.
int32_t mStride;
size_t mSurfaceAllocationSize;
struct PushedLayer {
explicit PushedLayer(bool aOldPermitSubpixelAA)
: mOldPermitSubpixelAA(aOldPermitSubpixelAA) {}
bool mOldPermitSubpixelAA;
};
std::vector<PushedLayer> mPushedLayers;
std::stack<IntRect> mCurrentClipBounds;
CaptureCommandList mCommands;
size_t mFlushBytes;
};
} // namespace gfx
} // namespace mozilla
#endif /* MOZILLA_GFX_DRAWTARGETCAPTURE_H_ */