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- /*
- * 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 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*, const SkVertices::Bone bones[], int boneCount,
- SkBlendMode, const SkPaint&) override;
- void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
- int, SkBlendMode, const SkRect*, const SkPaint*) override;
- void onDrawPath(const SkPath&, const SkPaint&) override;
- void onDrawImage(const SkImage*, SkScalar, SkScalar, const SkPaint*) override;
- void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
- SrcRectConstraint) override;
- void onDrawImageNine(const SkImage*, const SkIRect&, const SkRect&, const SkPaint*) override;
- void onDrawImageLattice(const SkImage*, const Lattice&, const SkRect&, const SkPaint*) override;
- void onDrawBitmap(const SkBitmap&, SkScalar, SkScalar, const SkPaint*) override;
- void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
- SrcRectConstraint) override;
- void onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect&, const SkPaint*) override;
- void onDrawBitmapLattice(const SkBitmap&, const Lattice&, 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, SkColor,
- SkBlendMode) override;
- void onDrawEdgeAAImageSet(const ImageSetEntry[], int count, const SkPoint[], const SkMatrix[],
- const SkPaint*, SrcRectConstraint) override;
- private:
- void drawPosTextCommon(const SkGlyphID[], int, const SkScalar[], int, const SkPoint&,
- const SkFont&, const SkPaint&);
- inline SkPaint overdrawPaint(const SkPaint& paint);
- SkPaint fPaint;
- typedef SkCanvasVirtualEnforcer<SkNWayCanvas> INHERITED;
- };
- #endif
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