821a84558b
Bug: skia:7650 Change-Id: Ie6bce2130519655645b7c5602d364cd0e1d6fdf3 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356358 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
71 lines
3.2 KiB
C++
71 lines
3.2 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkOverdrawCanvas_DEFINED
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#define SkOverdrawCanvas_DEFINED
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#include "include/core/SkCanvasVirtualEnforcer.h"
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#include "include/utils/SkNWayCanvas.h"
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/**
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* Captures all drawing commands. Rather than draw the actual content, this device
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* increments the alpha channel of each pixel every time it would have been touched
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* by a draw call. This is useful for detecting overdraw.
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*/
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class SK_API SkOverdrawCanvas : public SkCanvasVirtualEnforcer<SkNWayCanvas> {
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public:
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/* Does not take ownership of canvas */
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SkOverdrawCanvas(SkCanvas*);
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void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override;
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void onDrawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode,
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const SkPaint&) override;
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void onDrawPaint(const SkPaint&) override;
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void onDrawBehind(const SkPaint& paint) override;
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void onDrawRect(const SkRect&, const SkPaint&) override;
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void onDrawRegion(const SkRegion&, const SkPaint&) override;
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void onDrawOval(const SkRect&, const SkPaint&) override;
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void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override;
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void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
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void onDrawRRect(const SkRRect&, const SkPaint&) override;
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void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint&) override;
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void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override;
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void onDrawPath(const SkPath&, const SkPaint&) override;
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void onDrawImage2(const SkImage*, SkScalar, SkScalar, const SkSamplingOptions&,
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const SkPaint*) override;
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void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&,
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const SkPaint*, SrcRectConstraint) override;
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void onDrawImageLattice2(const SkImage*, const Lattice&, const SkRect&, SkFilterMode,
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const SkPaint*) override;
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void onDrawAtlas2(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
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SkBlendMode, const SkSamplingOptions&, const SkRect*, const SkPaint*) override;
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void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
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void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
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void onDrawAnnotation(const SkRect&, const char key[], SkData* value) override;
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void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override;
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void onDrawEdgeAAQuad(const SkRect&, const SkPoint[4], SkCanvas::QuadAAFlags, const SkColor4f&,
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SkBlendMode) override;
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void onDrawEdgeAAImageSet2(const ImageSetEntry[], int count, const SkPoint[], const SkMatrix[],
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const SkSamplingOptions&,const SkPaint*, SrcRectConstraint) override;
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private:
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void drawPosTextCommon(const SkGlyphID[], int, const SkScalar[], int, const SkPoint&,
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const SkFont&, const SkPaint&);
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inline SkPaint overdrawPaint(const SkPaint& paint);
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SkPaint fPaint;
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using INHERITED = SkCanvasVirtualEnforcer<SkNWayCanvas>;
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};
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#endif
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