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81 lines
3.6 KiB
81 lines
3.6 KiB
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkNoDrawCanvas_DEFINED
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#define SkNoDrawCanvas_DEFINED
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#include "include/core/SkCanvas.h"
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#include "include/core/SkCanvasVirtualEnforcer.h"
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struct SkIRect;
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// SkNoDrawCanvas is a helper for SkCanvas subclasses which do not need to
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// actually rasterize (e.g., analysis of the draw calls).
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//
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// It provides the following simplifications:
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//
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// * not backed by any device/pixels
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// * conservative clipping (clipping calls only use rectangles)
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//
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class SK_API SkNoDrawCanvas : public SkCanvasVirtualEnforcer<SkCanvas> {
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public:
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SkNoDrawCanvas(int width, int height);
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SkNoDrawCanvas(const SkIRect&);
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explicit SkNoDrawCanvas(sk_sp<SkBaseDevice> device);
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// Optimization to reset state to be the same as after construction.
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void resetCanvas(int w, int h) { this->resetForNextPicture(SkIRect::MakeWH(w, h)); }
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void resetCanvas(const SkIRect& rect) { this->resetForNextPicture(rect); }
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protected:
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SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec& rec) override;
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bool onDoSaveBehind(const SkRect*) override;
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// No-op overrides for aborting rasterization earlier than SkNullBlitter.
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void onDrawAnnotation(const SkRect&, const char[], SkData*) override {}
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void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override {}
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void onDrawDrawable(SkDrawable*, const SkMatrix*) override {}
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void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override {}
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void onDrawPatch(const SkPoint[12], const SkColor[4], const SkPoint[4], SkBlendMode,
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const SkPaint&) override {}
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void onDrawPaint(const SkPaint&) override {}
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void onDrawBehind(const SkPaint&) override {}
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void onDrawPoints(PointMode, size_t, const SkPoint[], const SkPaint&) override {}
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void onDrawRect(const SkRect&, const SkPaint&) override {}
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void onDrawRegion(const SkRegion&, const SkPaint&) override {}
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void onDrawOval(const SkRect&, const SkPaint&) override {}
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void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override {}
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void onDrawRRect(const SkRRect&, const SkPaint&) override {}
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void onDrawPath(const SkPath&, const SkPaint&) override {}
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void onDrawImage2(const SkImage*, SkScalar, SkScalar, const SkSamplingOptions&,
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const SkPaint*) override {}
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void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&,
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const SkPaint*, SrcRectConstraint) override {}
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void onDrawImageLattice2(const SkImage*, const Lattice&, const SkRect&, SkFilterMode,
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const SkPaint*) override {}
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void onDrawAtlas2(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int,
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SkBlendMode, const SkSamplingOptions&, const SkRect*, const SkPaint*) override {}
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void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override {}
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void onDrawShadowRec(const SkPath&, const SkDrawShadowRec&) override {}
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void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {}
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void onDrawEdgeAAQuad(const SkRect&, const SkPoint[4], QuadAAFlags, const SkColor4f&,
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SkBlendMode) override {}
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void onDrawEdgeAAImageSet2(const ImageSetEntry[], int, const SkPoint[], const SkMatrix[],
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const SkSamplingOptions&, const SkPaint*,
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SrcRectConstraint) override {}
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private:
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using INHERITED = SkCanvasVirtualEnforcer<SkCanvas>;
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};
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#endif // SkNoDrawCanvas_DEFINED
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