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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkNulCanvas_DEFINED | 8 #ifndef SkNulCanvas_DEFINED |
9 #define SkNulCanvas_DEFINED | 9 #define SkNulCanvas_DEFINED |
10 | 10 |
11 #include "SkCanvas.h" | 11 #include "SkCanvas.h" |
12 | 12 |
13 /** \class SkNulCanvas | 13 /** \class SkNulCanvas |
14 * | 14 * |
15 * Nul Canvas is a canvas that does nothing. It is used to measure the perf of
just parsing | 15 * Nul Canvas is a canvas that does nothing. It is used to measure the perf of
just parsing |
16 * a pdf, without actually rendering anything. | 16 * a pdf, without actually rendering anything. |
17 * | 17 * |
18 */ | 18 */ |
19 class SK_API SkNulCanvas : public SkCanvas { | 19 class SK_API SkNulCanvas : public SkCanvas { |
20 public: | 20 public: |
21 SK_DECLARE_INST_COUNT(SkNulCanvas); | 21 SK_DECLARE_INST_COUNT(SkNulCanvas); |
22 | 22 |
23 SkNulCanvas() {} | 23 SkNulCanvas() {} |
24 explicit SkNulCanvas(SkBaseDevice* device) : SkCanvas(device) {} | 24 explicit SkNulCanvas(SkBaseDevice* device) : SkCanvas(device) {} |
25 | 25 |
26 explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {} | 26 explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {} |
27 virtual ~SkNulCanvas() {} | 27 virtual ~SkNulCanvas() {} |
28 | 28 |
| 29 virtual int save(SaveFlags flags = kMatrixClip_SaveFlag) SK_OVERRIDE {return
0;} |
| 30 virtual int saveLayer(const SkRect* bounds, const SkPaint* paint, |
| 31 SaveFlags flags = kARGB_ClipLayer_SaveFlag) SK_OVERRID
E {return 0;} |
| 32 int saveLayerAlpha(const SkRect* bounds, U8CPU alpha, |
| 33 SaveFlags flags = kARGB_ClipLayer_SaveFlag) {return 0;} |
| 34 virtual void restore() SK_OVERRIDE {} |
| 35 int getSaveCount() const {return 0;} |
29 virtual bool isDrawingToLayer() const SK_OVERRIDE {return false;} | 36 virtual bool isDrawingToLayer() const SK_OVERRIDE {return false;} |
30 virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE {return true;} | 37 virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE {return true;} |
31 virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE {return true;} | 38 virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE {return true;} |
32 virtual bool rotate(SkScalar degrees) SK_OVERRIDE {return true;} | 39 virtual bool rotate(SkScalar degrees) SK_OVERRIDE {return true;} |
33 virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE {return true;} | 40 virtual bool skew(SkScalar sx, SkScalar sy) SK_OVERRIDE {return true;} |
34 virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE {return true;} | 41 virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE {return true;} |
35 virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE {} | 42 virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE {} |
36 virtual void clear(SkColor) SK_OVERRIDE {} | 43 virtual void clear(SkColor) SK_OVERRIDE {} |
37 virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE {} | 44 virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE {} |
38 virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], | 45 virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], |
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92 if (NULL != bounds) { | 99 if (NULL != bounds) { |
93 bounds->setLargest(); | 100 bounds->setLargest(); |
94 } | 101 } |
95 return true; | 102 return true; |
96 } | 103 } |
97 | 104 |
98 protected: | 105 protected: |
99 virtual SkCanvas* canvasForDrawIter() {return NULL;} | 106 virtual SkCanvas* canvasForDrawIter() {return NULL;} |
100 virtual SkBaseDevice* setDevice(SkBaseDevice* device) {return NULL;} | 107 virtual SkBaseDevice* setDevice(SkBaseDevice* device) {return NULL;} |
101 | 108 |
102 virtual bool onSaveLayer(const SkRect* bounds, const SkPaint* paint, SaveFla
gs flags) | |
103 SK_OVERRIDE { | |
104 this->INHERITED::onSaveLayer(bounds, paint, flags); | |
105 return false; | |
106 } | |
107 | |
108 virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERR
IDE {} | 109 virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERR
IDE {} |
109 virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVE
RRIDE {} | 110 virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVE
RRIDE {} |
110 virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERR
IDE {} | 111 virtual void onClipPath(const SkPath&, SkRegion::Op, ClipEdgeStyle) SK_OVERR
IDE {} |
111 virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE {} | 112 virtual void onClipRegion(const SkRegion&, SkRegion::Op) SK_OVERRIDE {} |
112 | 113 |
113 private: | 114 private: |
114 typedef SkCanvas INHERITED; | 115 typedef SkCanvas INHERITED; |
115 }; | 116 }; |
116 | 117 |
117 #endif // SkNulCanvas_DEFINED | 118 #endif // SkNulCanvas_DEFINED |
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