/* * Copyright 2018 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkCanvasVirtualEnforcer_DEFINED #define SkCanvasVirtualEnforcer_DEFINED #include "SkCanvas.h" // If you would ordinarily want to inherit from Base (eg SkCanvas, SkNWayCanvas), instead // inherit from SkCanvasVirtualEnforcer, which will make the build fail if you forget // to override one of SkCanvas' key virtual hooks. template class SkCanvasVirtualEnforcer : public Base { public: using Base::Base; protected: void onDrawPaint(const SkPaint& paint) override = 0; void onDrawRect(const SkRect& rect, const SkPaint& paint) override = 0; void onDrawRRect(const SkRRect& rrect, const SkPaint& paint) override = 0; void onDrawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint& paint) override = 0; void onDrawOval(const SkRect& rect, const SkPaint& paint) override = 0; void onDrawArc(const SkRect& rect, SkScalar startAngle, SkScalar sweepAngle, bool useCenter, const SkPaint& paint) override = 0; void onDrawPath(const SkPath& path, const SkPaint& paint) override = 0; void onDrawRegion(const SkRegion& region, const SkPaint& paint) override = 0; void onDrawTextRSXform(const void* text, size_t byteLength, const SkRSXform xform[], const SkRect* cullRect, const SkPaint& paint) override = 0; void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, const SkPaint& paint) override = 0; void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], const SkPoint texCoords[4], SkBlendMode mode, const SkPaint& paint) override = 0; void onDrawPoints(SkCanvas::PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint) override = 0; void onDrawVerticesObject(const SkVertices*, const SkVertices::Bone bones[], int boneCount, SkBlendMode, const SkPaint&) override = 0; void onDrawImage(const SkImage* image, SkScalar dx, SkScalar dy, const SkPaint* paint) override = 0; void onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst, const SkPaint* paint, SkCanvas::SrcRectConstraint constraint) override = 0; void onDrawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst, const SkPaint* paint) override = 0; void onDrawImageLattice(const SkImage* image, const SkCanvas::Lattice& lattice, const SkRect& dst, const SkPaint* paint) override = 0; #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK // This is under active development for Chrome and not used in Android. Hold off on adding // implementations in Android's SkCanvas subclasses until this stabilizes. void onDrawImageSet(const SkCanvas::ImageSetEntry[], int count, SkFilterQuality, SkBlendMode) override {}; #else void onDrawImageSet(const SkCanvas::ImageSetEntry[], int count, SkFilterQuality, SkBlendMode) override = 0; #endif void onDrawBitmap(const SkBitmap& bitmap, SkScalar dx, SkScalar dy, const SkPaint* paint) override = 0; void onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst, const SkPaint* paint, SkCanvas::SrcRectConstraint constraint) override = 0; void onDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst, const SkPaint* paint) override = 0; void onDrawBitmapLattice(const SkBitmap& bitmap, const SkCanvas::Lattice& lattice, const SkRect& dst, const SkPaint* paint) override = 0; void onDrawAtlas(const SkImage* atlas, const SkRSXform xform[], const SkRect rect[], const SkColor colors[], int count, SkBlendMode mode, const SkRect* cull, const SkPaint* paint) override = 0; void onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) override = 0; void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override = 0; void onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) override = 0; void onDrawPicture(const SkPicture* picture, const SkMatrix* matrix, const SkPaint* paint) override = 0; }; #endif