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87 lines
3.9 KiB
87 lines
3.9 KiB
4 months ago
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/*
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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 "SkCanvas.h"
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#include "SkCanvasVirtualEnforcer.h"
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#include "SkVertices.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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// TODO: investigate the users of this ctor.
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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 width, int height) {
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resetForNextPicture(SkIRect::MakeWH(width, height));
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}
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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 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 onDrawEdgeAARect(const SkRect&, SkCanvas::QuadAAFlags, SkColor, SkBlendMode) 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 onDrawBitmap(const SkBitmap&, SkScalar, SkScalar, const SkPaint*) override {}
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void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
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SrcRectConstraint) override {}
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void onDrawImage(const SkImage*, SkScalar, SkScalar, const SkPaint*) override {}
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void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
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SrcRectConstraint) override {}
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void onDrawImageNine(const SkImage*, const SkIRect&, const SkRect&, const SkPaint*) override {}
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void onDrawBitmapNine(const SkBitmap&, const SkIRect&, const SkRect&,
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const SkPaint*) override {}
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void onDrawImageLattice(const SkImage*, const Lattice&, const SkRect&,
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const SkPaint*) override {}
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void onDrawImageSet(const SkCanvas::ImageSetEntry[], int, SkFilterQuality,
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SkBlendMode) override {}
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void onDrawBitmapLattice(const SkBitmap&, const Lattice&, const SkRect&,
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const SkPaint*) override {}
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void onDrawVerticesObject(const SkVertices*, const SkVertices::Bone[], int, SkBlendMode,
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const SkPaint&) override {}
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void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
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int, SkBlendMode, const SkRect*, 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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private:
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typedef SkCanvasVirtualEnforcer<SkCanvas> INHERITED;
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};
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#endif // SkNoDrawCanvas_DEFINED
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