| /* |
| * 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, const SkColor4f&, |
| 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 |