diff options
Diffstat (limited to 'gfx/skia/skia/include/core/SkOverdrawCanvas.h')
-rw-r--r-- | gfx/skia/skia/include/core/SkOverdrawCanvas.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/core/SkOverdrawCanvas.h b/gfx/skia/skia/include/core/SkOverdrawCanvas.h new file mode 100644 index 0000000000..f3ffc06556 --- /dev/null +++ b/gfx/skia/skia/include/core/SkOverdrawCanvas.h @@ -0,0 +1,69 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SkOverdrawCanvas_DEFINED +#define SkOverdrawCanvas_DEFINED + +#include "include/core/SkCanvasVirtualEnforcer.h" +#include "include/utils/SkNWayCanvas.h" + +/** + * Captures all drawing commands. Rather than draw the actual content, this device + * increments the alpha channel of each pixel every time it would have been touched + * by a draw call. This is useful for detecting overdraw. + */ +class SK_API SkOverdrawCanvas : public SkCanvasVirtualEnforcer<SkNWayCanvas> { +public: + /* Does not take ownership of canvas */ + SkOverdrawCanvas(SkCanvas*); + + void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override; + void onDrawGlyphRunList( + const sktext::GlyphRunList& glyphRunList, const SkPaint& paint) override; + void onDrawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode, + const SkPaint&) override; + void onDrawPaint(const SkPaint&) override; + void onDrawBehind(const SkPaint& paint) override; + void onDrawRect(const SkRect&, const SkPaint&) override; + void onDrawRegion(const SkRegion&, const SkPaint&) override; + void onDrawOval(const SkRect&, const SkPaint&) override; + void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override; + void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override; + void onDrawRRect(const SkRRect&, const SkPaint&) override; + void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint&) override; + void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override; + void onDrawPath(const SkPath&, const SkPaint&) override; + + void onDrawImage2(const SkImage*, SkScalar, SkScalar, const SkSamplingOptions&, + const SkPaint*) override; + void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&, + const SkPaint*, SrcRectConstraint) override; + void onDrawImageLattice2(const SkImage*, const Lattice&, const SkRect&, SkFilterMode, + const SkPaint*) override; + void onDrawAtlas2(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int, + SkBlendMode, const SkSamplingOptions&, const SkRect*, const SkPaint*) override; + + void onDrawDrawable(SkDrawable*, const SkMatrix*) override; + void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override; + + void onDrawAnnotation(const SkRect&, const char key[], SkData* value) override; + void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override; + + void onDrawEdgeAAQuad(const SkRect&, const SkPoint[4], SkCanvas::QuadAAFlags, const SkColor4f&, + SkBlendMode) override; + void onDrawEdgeAAImageSet2(const ImageSetEntry[], int count, const SkPoint[], const SkMatrix[], + const SkSamplingOptions&,const SkPaint*, SrcRectConstraint) override; + +private: + inline SkPaint overdrawPaint(const SkPaint& paint); + + SkPaint fPaint; + + using INHERITED = SkCanvasVirtualEnforcer<SkNWayCanvas>; +}; + +#endif |