| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPaintFilterCanvas_DEFINED |
| #define SkPaintFilterCanvas_DEFINED |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkCanvasVirtualEnforcer.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSamplingOptions.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkTDArray.h" |
| #include "include/utils/SkNWayCanvas.h" |
| |
| #include <cstddef> |
| |
| namespace sktext { |
| class GlyphRunList; |
| } |
| |
| class GrRecordingContext; |
| class SkData; |
| class SkDrawable; |
| class SkImage; |
| class SkMatrix; |
| class SkPaint; |
| class SkPath; |
| class SkPicture; |
| class SkPixmap; |
| class SkRRect; |
| class SkRegion; |
| class SkSurface; |
| class SkSurfaceProps; |
| class SkTextBlob; |
| class SkVertices; |
| enum class SkBlendMode; |
| struct SkDrawShadowRec; |
| struct SkPoint; |
| struct SkRSXform; |
| struct SkRect; |
| |
| /** \class SkPaintFilterCanvas |
| |
| A utility proxy base class for implementing draw/paint filters. |
| */ |
| class SK_API SkPaintFilterCanvas : public SkCanvasVirtualEnforcer<SkNWayCanvas> { |
| public: |
| /** |
| * The new SkPaintFilterCanvas is configured for forwarding to the |
| * specified canvas. Also copies the target canvas matrix and clip bounds. |
| */ |
| SkPaintFilterCanvas(SkCanvas* canvas); |
| |
| enum Type { |
| kPicture_Type, |
| }; |
| |
| // Forwarded to the wrapped canvas. |
| SkISize getBaseLayerSize() const override { return proxy()->getBaseLayerSize(); } |
| GrRecordingContext* recordingContext() override { return proxy()->recordingContext(); } |
| |
| protected: |
| /** |
| * Called with the paint that will be used to draw the specified type. |
| * The implementation may modify the paint as they wish. |
| * |
| * The result bool is used to determine whether the draw op is to be |
| * executed (true) or skipped (false). |
| * |
| * Note: The base implementation calls onFilter() for top-level/explicit paints only. |
| * To also filter encapsulated paints (e.g. SkPicture, SkTextBlob), clients may need to |
| * override the relevant methods (i.e. drawPicture, drawTextBlob). |
| */ |
| virtual bool onFilter(SkPaint& paint) const = 0; |
| |
| void onDrawPaint(const SkPaint&) override; |
| void onDrawBehind(const SkPaint&) override; |
| void onDrawPoints(PointMode, size_t count, const SkPoint pts[], const SkPaint&) override; |
| void onDrawRect(const SkRect&, const SkPaint&) override; |
| void onDrawRRect(const SkRRect&, const SkPaint&) override; |
| void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override; |
| void onDrawRegion(const SkRegion&, const SkPaint&) override; |
| void onDrawOval(const SkRect&, const SkPaint&) override; |
| void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override; |
| void onDrawPath(const SkPath&, const SkPaint&) override; |
| |
| void onDrawImage2(const SkImage*, SkScalar, SkScalar, const SkSamplingOptions&, |
| const SkPaint*) override; |
| void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&, |
| const SkPaint*, SrcRectConstraint) override; |
| void onDrawImageLattice2(const SkImage*, const Lattice&, const SkRect&, SkFilterMode, |
| const SkPaint*) override; |
| void onDrawAtlas2(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[], int, |
| SkBlendMode, const SkSamplingOptions&, const SkRect*, const SkPaint*) override; |
| |
| void onDrawVerticesObject(const SkVertices*, SkBlendMode, const SkPaint&) override; |
| void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], |
| const SkPoint texCoords[4], SkBlendMode, |
| const SkPaint& paint) override; |
| void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override; |
| void onDrawDrawable(SkDrawable*, const SkMatrix*) override; |
| |
| void onDrawGlyphRunList(const sktext::GlyphRunList&, const SkPaint&) override; |
| void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| const SkPaint& paint) override; |
| void onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) override; |
| void onDrawShadowRec(const SkPath& path, const SkDrawShadowRec& rec) override; |
| |
| void onDrawEdgeAAQuad(const SkRect&, const SkPoint[4], QuadAAFlags, const SkColor4f&, |
| SkBlendMode) override; |
| void onDrawEdgeAAImageSet2(const ImageSetEntry[], int count, const SkPoint[], const SkMatrix[], |
| const SkSamplingOptions&,const SkPaint*, SrcRectConstraint) override; |
| |
| // Forwarded to the wrapped canvas. |
| sk_sp<SkSurface> onNewSurface(const SkImageInfo&, const SkSurfaceProps&) override; |
| bool onPeekPixels(SkPixmap* pixmap) override; |
| bool onAccessTopLayerPixels(SkPixmap* pixmap) override; |
| SkImageInfo onImageInfo() const override; |
| bool onGetProps(SkSurfaceProps* props, bool top) const override; |
| |
| private: |
| class AutoPaintFilter; |
| |
| SkCanvas* proxy() const { SkASSERT(fList.size() == 1); return fList[0]; } |
| |
| SkPaintFilterCanvas* internal_private_asPaintFilterCanvas() const override { |
| return const_cast<SkPaintFilterCanvas*>(this); |
| } |
| |
| friend class SkAndroidFrameworkUtils; |
| }; |
| |
| #endif |