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/*
* 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
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