| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkNulCanvas_DEFINED |
| #define SkNulCanvas_DEFINED |
| |
| #include "SkCanvas.h" |
| |
| /** \class SkNulCanvas |
| * |
| * Nul Canvas is a canvas that does nothing. It is used to measure the perf of just parsing |
| * a pdf, without actually rendering anything. |
| * |
| */ |
| class SK_API SkNulCanvas : public SkCanvas { |
| public: |
| SK_DECLARE_INST_COUNT(SkNulCanvas); |
| |
| SkNulCanvas() {} |
| explicit SkNulCanvas(SkBaseDevice* device) : SkCanvas(device) {} |
| |
| explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {} |
| virtual ~SkNulCanvas() {} |
| |
| SkDrawFilter* setDrawFilter(SkDrawFilter* filter) override {return NULL;} |
| |
| bool isClipEmpty() const override { return false; } |
| bool getClipBounds(SkRect* bounds) const override { |
| if (NULL != bounds) { |
| bounds->setXYWH(0, 0, |
| SkIntToScalar(this->imageInfo().width()), |
| SkIntToScalar(this->imageInfo().height())); |
| } |
| return true; |
| } |
| bool getClipDeviceBounds(SkIRect* bounds) const override { |
| if (NULL != bounds) { |
| bounds->setLargest(); |
| } |
| return true; |
| } |
| |
| protected: |
| virtual SkCanvas* canvasForDrawIter() {return NULL;} |
| virtual SkBaseDevice* setDevice(SkBaseDevice* device) {return NULL;} |
| |
| virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint, |
| SaveFlags flags) override { |
| this->INHERITED::willSaveLayer(bounds, paint, flags); |
| return kNoLayer_SaveLayerStrategy; |
| } |
| |
| virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, |
| SkScalar y, const SkPaint& paint) override {} |
| virtual void onDrawPosText(const void* text, size_t byteLength, |
| const SkPoint pos[], const SkPaint& paint) override {} |
| virtual void onDrawPosTextH(const void* text, size_t byteLength, |
| const SkScalar xpos[], SkScalar constY, |
| const SkPaint& paint) override {} |
| virtual void onDrawTextOnPath(const void* text, size_t byteLength, |
| const SkPath& path, const SkMatrix* matrix, |
| const SkPaint& paint) override {} |
| |
| void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) override {} |
| void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) override {} |
| void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) override {} |
| void onClipRegion(const SkRegion&, SkRegion::Op) override {} |
| |
| void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {} |
| |
| void onDrawPaint(const SkPaint& paint) override {} |
| void onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| const SkPaint& paint) override {} |
| void onDrawRect(const SkRect& rect, const SkPaint& paint) override {} |
| void onDrawOval(const SkRect& oval, const SkPaint&) override {} |
| void onDrawRRect(const SkRRect& rrect, const SkPaint& paint) override {} |
| void onDrawPath(const SkPath& path, const SkPaint& paint) override {} |
| void onDrawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, |
| const SkPaint* paint = NULL) override {} |
| void onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, |
| const SkRect& dst, |
| const SkPaint* paint, |
| DrawBitmapRectFlags flags) override {} |
| void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override {} |
| void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst, |
| const SkPaint*) override{} |
| void onDrawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, |
| const SkRect& dst, const SkPaint* paint = NULL) override {} |
| void onDrawSprite(const SkBitmap& bitmap, int left, int top, |
| const SkPaint* paint = NULL) override {} |
| void onDrawVertices(VertexMode vmode, int vertexCount, |
| const SkPoint vertices[], const SkPoint texs[], |
| const SkColor colors[], SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, |
| const SkPaint& paint) override {} |
| |
| |
| private: |
| typedef SkCanvas INHERITED; |
| }; |
| |
| #endif // SkNulCanvas_DEFINED |