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Side by Side Diff: skia/ext/analysis_canvas.h

Issue 126343003: Revert of cc: Combine analysis and raster (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 11 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef SKIA_EXT_ANALYSIS_CANVAS_H_ 5 #ifndef SKIA_EXT_ANALYSIS_CANVAS_H_
6 #define SKIA_EXT_ANALYSIS_CANVAS_H_ 6 #define SKIA_EXT_ANALYSIS_CANVAS_H_
7 7
8 #include "base/compiler_specific.h" 8 #include "base/compiler_specific.h"
9 #include "third_party/skia/include/core/SkBitmapDevice.h" 9 #include "third_party/skia/include/core/SkBitmapDevice.h"
10 #include "third_party/skia/include/core/SkCanvas.h" 10 #include "third_party/skia/include/core/SkCanvas.h"
11 #include "third_party/skia/include/core/SkPicture.h" 11 #include "third_party/skia/include/core/SkPicture.h"
12 12
13 namespace skia { 13 namespace skia {
14 14
15 class AnalysisDevice; 15 class AnalysisDevice;
16 16
17 // Does not render anything, but gathers statistics about a region 17 // Does not render anything, but gathers statistics about a region
18 // (specified as a clip rectangle) of an SkPicture as the picture is 18 // (specified as a clip rectangle) of an SkPicture as the picture is
19 // played back through it. 19 // played back through it.
20 // To use: create a SkBitmap with kNo_Config, create an AnalysisDevice 20 // To use: create a SkBitmap with kNo_Config, create an AnalysisDevice
21 // using that bitmap, and create an AnalysisCanvas using the device. 21 // using that bitmap, and create an AnalysisCanvas using the device.
22 // Play a picture into the canvas, and then check result. 22 // Play a picture into the canvas, and then check result.
23 class SK_API AnalysisCanvas : public SkCanvas { 23 class SK_API AnalysisCanvas : public SkCanvas, public SkDrawPictureCallback {
24 public: 24 public:
25 explicit AnalysisCanvas(AnalysisDevice* device); 25 AnalysisCanvas(AnalysisDevice*);
26 virtual ~AnalysisCanvas(); 26 virtual ~AnalysisCanvas();
27 27
28 // Returns true when a SkColor can be used to represent result. 28 // Returns true when a SkColor can be used to represent result.
29 bool GetColorIfSolid(SkColor* color) const; 29 bool GetColorIfSolid(SkColor* color) const;
30 bool HasText() const; 30 bool HasText() const;
31 31
32 // SkDrawPictureCallback override.
33 virtual bool abortDrawing() OVERRIDE;
34
32 // SkCanvas overrides. 35 // SkCanvas overrides.
33 virtual bool clipRect(const SkRect& rect, 36 virtual bool clipRect(const SkRect& rect,
34 SkRegion::Op op = SkRegion::kIntersect_Op, 37 SkRegion::Op op = SkRegion::kIntersect_Op,
35 bool do_anti_alias = false) OVERRIDE; 38 bool do_anti_alias = false) OVERRIDE;
36 virtual bool clipPath(const SkPath& path, 39 virtual bool clipPath(const SkPath& path,
37 SkRegion::Op op = SkRegion::kIntersect_Op, 40 SkRegion::Op op = SkRegion::kIntersect_Op,
38 bool do_anti_alias = false) OVERRIDE; 41 bool do_anti_alias = false) OVERRIDE;
39 virtual bool clipRRect(const SkRRect& rrect, 42 virtual bool clipRRect(const SkRRect& rrect,
40 SkRegion::Op op = SkRegion::kIntersect_Op, 43 SkRegion::Op op = SkRegion::kIntersect_Op,
41 bool do_anti_alias = false) OVERRIDE; 44 bool do_anti_alias = false) OVERRIDE;
(...skipping 11 matching lines...) Expand all
53 int saved_stack_size_; 56 int saved_stack_size_;
54 int force_not_solid_stack_level_; 57 int force_not_solid_stack_level_;
55 int force_not_transparent_stack_level_; 58 int force_not_transparent_stack_level_;
56 }; 59 };
57 60
58 // TODO(robertphillips): Once Skia's SkBaseDevice API is refactored to 61 // TODO(robertphillips): Once Skia's SkBaseDevice API is refactored to
59 // remove the bitmap-specific entry points, it might make sense for this 62 // remove the bitmap-specific entry points, it might make sense for this
60 // to be derived from SkBaseDevice (rather than SkBitmapDevice) 63 // to be derived from SkBaseDevice (rather than SkBitmapDevice)
61 class SK_API AnalysisDevice : public SkBitmapDevice { 64 class SK_API AnalysisDevice : public SkBitmapDevice {
62 public: 65 public:
63 // |analysis_rect| is in device space.
64 AnalysisDevice(const SkBitmap& bitmap, SkRect analysis_rect);
65 // Analyze the entire bitmap.
66 AnalysisDevice(const SkBitmap& bitmap); 66 AnalysisDevice(const SkBitmap& bitmap);
67 virtual ~AnalysisDevice(); 67 virtual ~AnalysisDevice();
68 68
69 bool GetColorIfSolid(SkColor* color) const; 69 bool GetColorIfSolid(SkColor* color) const;
70 bool HasText() const; 70 bool HasText() const;
71 71
72 void SetForceNotSolid(bool flag); 72 void SetForceNotSolid(bool flag);
73 void SetForceNotTransparent(bool flag); 73 void SetForceNotTransparent(bool flag);
74 74
75 SkRect AnalysisRect() const { return analysis_rect_; }
76
77 protected: 75 protected:
78 // SkBaseDevice overrides. 76 // SkBaseDevice overrides.
79 virtual void clear(SkColor color) OVERRIDE; 77 virtual void clear(SkColor color) OVERRIDE;
80 virtual void drawPaint(const SkDraw& draw, const SkPaint& paint) OVERRIDE; 78 virtual void drawPaint(const SkDraw& draw, const SkPaint& paint) OVERRIDE;
81 virtual void drawPoints(const SkDraw& draw, 79 virtual void drawPoints(const SkDraw& draw,
82 SkCanvas::PointMode mode, 80 SkCanvas::PointMode mode,
83 size_t count, 81 size_t count,
84 const SkPoint points[], 82 const SkPoint points[],
85 const SkPaint& paint) OVERRIDE; 83 const SkPaint& paint) OVERRIDE;
86 virtual void drawRect(const SkDraw& draw, 84 virtual void drawRect(const SkDraw& draw,
(...skipping 65 matching lines...) Expand 10 before | Expand all | Expand 10 after
152 const SkPaint& paint) OVERRIDE; 150 const SkPaint& paint) OVERRIDE;
153 virtual void drawDevice(const SkDraw& draw, 151 virtual void drawDevice(const SkDraw& draw,
154 SkBaseDevice* device, 152 SkBaseDevice* device,
155 int x, 153 int x,
156 int y, 154 int y,
157 const SkPaint& paint) OVERRIDE; 155 const SkPaint& paint) OVERRIDE;
158 156
159 private: 157 private:
160 typedef SkBitmapDevice INHERITED; 158 typedef SkBitmapDevice INHERITED;
161 159
162 SkRect analysis_rect_;
163 bool is_forced_not_solid_; 160 bool is_forced_not_solid_;
164 bool is_forced_not_transparent_; 161 bool is_forced_not_transparent_;
165 bool is_solid_color_; 162 bool is_solid_color_;
166 SkColor color_; 163 SkColor color_;
167 bool is_transparent_; 164 bool is_transparent_;
168 bool has_text_; 165 bool has_text_;
169 }; 166 };
170 167
171 } // namespace skia 168 } // namespace skia
172 169
173 #endif // SKIA_EXT_ANALYSIS_CANVAS_H_ 170 #endif // SKIA_EXT_ANALYSIS_CANVAS_H_
174 171
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