| /* |
| * 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 "include/core/SkCanvas.h" |
| |
| // If you would ordinarily want to inherit from Base (eg SkCanvas, SkNWayCanvas), instead |
| // inherit from SkCanvasVirtualEnforcer<Base>, which will make the build fail if you forget |
| // to override one of SkCanvas' key virtual hooks. |
| template <typename Base> |
| class SkCanvasVirtualEnforcer : public Base { |
| public: |
| using Base::Base; |
| |
| protected: |
| void onDrawPaint(const SkPaint& paint) override = 0; |
| void onDrawBehind(const SkPaint&) override {} // make zero after android updates |
| 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 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; |
| |
| #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 onDrawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4], |
| SkCanvas::QuadAAFlags aaFlags, const SkColor4f& color, SkBlendMode mode) override {} |
| #else |
| void onDrawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4], |
| SkCanvas::QuadAAFlags aaFlags, const SkColor4f& color, SkBlendMode mode) override = 0; |
| #endif |
| |
| 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 |