/* * 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 "SkCanvasVirtualEnforcer.h" #include "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 onDrawText(const void*, size_t, SkScalar, SkScalar, const SkPaint&) override; void onDrawPosText(const void*, size_t, const SkPoint[], const SkPaint&) override; void onDrawPosTextH(const void*, size_t, const SkScalar[], SkScalar, const SkPaint&) override; void onDrawTextRSXform(const void*, size_t, const SkRSXform[], const SkRect*, const SkPaint&) override; 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 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 onDrawImageSet(const ImageSetEntry[], int count, float alpha, SkFilterQuality, SkBlendMode) 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; private: void drawPosTextCommon(const void*, size_t, const SkScalar[], int, const SkPoint&, const SkPaint&); inline SkPaint overdrawPaint(const SkPaint& paint); SkPaint fPaint; typedef SkCanvasVirtualEnforcer<SkNWayCanvas> INHERITED; }; #endif