From 4189d1b8b7dfa62f10845b0afcadba3a956ec939 Mon Sep 17 00:00:00 2001 From: Sadrul Habib Chowdhury Date: Fri, 18 Aug 2017 10:20:02 -0400 Subject: Add SK_API to SkOverdrawCanvas and SkOverdrawColorFilter. The SkiaRenderer in chromium is going to use the overdraw canvas and filter for measuring overdraw. Move these headers out of src/ into include/. Bug: chromium:704285 Change-Id: I2abb1671b73e3d26552462cf700340a7e3b874f0 Reviewed-on: https://skia-review.googlesource.com/36160 Reviewed-by: Brian Salomon Commit-Queue: Brian Salomon --- include/core/SkOverdrawCanvas.h | 70 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 include/core/SkOverdrawCanvas.h (limited to 'include/core') diff --git a/include/core/SkOverdrawCanvas.h b/include/core/SkOverdrawCanvas.h new file mode 100644 index 0000000000..284fe6cd97 --- /dev/null +++ b/include/core/SkOverdrawCanvas.h @@ -0,0 +1,70 @@ +/* + * 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 "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 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 onDrawTextOnPath(const void*, size_t, const SkPath&, const SkMatrix*, + 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*, 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; + +private: + void drawPosTextCommon(const void*, size_t, const SkScalar[], int, const SkPoint&, + const SkPaint&); + + inline SkPaint overdrawPaint(const SkPaint& paint); + + SkPaint fPaint; + + typedef SkNWayCanvas INHERITED; +}; + +#endif -- cgit v1.2.3