/* * 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: 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