OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright (c) 2012, Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef OpaqueRegionSkia_h | |
32 #define OpaqueRegionSkia_h | |
33 | |
34 #include "platform/geometry/IntRect.h" | |
35 | |
36 #include "SkBitmap.h" | |
37 #include "SkCanvas.h" | |
38 #include "SkPaint.h" | |
39 #include "SkPoint.h" | |
40 #include "SkRect.h" | |
41 | |
42 namespace WebCore { | |
43 class GraphicsContext; | |
44 | |
45 // This class is an encapsulation of functionality for GraphicsContext, and its
methods are mirrored | |
46 // there for the outside world. It tracks paints and computes what area will be
opaque. | |
47 class OpaqueRegionSkia FINAL { | |
48 public: | |
49 OpaqueRegionSkia(); | |
50 | |
51 // The resulting opaque region as a single rect. | |
52 IntRect asRect() const; | |
53 | |
54 void pushCanvasLayer(const SkPaint*); | |
55 void popCanvasLayer(const GraphicsContext*); | |
56 | |
57 void setImageMask(const SkRect& imageOpaqueRect); | |
58 | |
59 enum DrawType { | |
60 FillOnly, | |
61 FillOrStroke | |
62 }; | |
63 | |
64 void didDrawRect(const GraphicsContext*, const SkRect&, const SkPaint&, cons
t SkBitmap* sourceBitmap); | |
65 void didDrawPath(const GraphicsContext*, const SkPath&, const SkPaint&); | |
66 void didDrawPoints(const GraphicsContext*, SkCanvas::PointMode, int numPoint
s, const SkPoint[], const SkPaint&); | |
67 void didDrawBounded(const GraphicsContext*, const SkRect&, const SkPaint&); | |
68 void didDrawUnbounded(const GraphicsContext*, const SkPaint&, DrawType); | |
69 | |
70 struct CanvasLayerState { | |
71 CanvasLayerState() | |
72 : hasImageMask(false) | |
73 , opaqueRect(SkRect::MakeEmpty()) | |
74 { } | |
75 | |
76 SkPaint paint; | |
77 | |
78 // An image mask is being applied to the layer. | |
79 bool hasImageMask; | |
80 // The opaque area in the image mask. | |
81 SkRect imageOpaqueRect; | |
82 | |
83 SkRect opaqueRect; | |
84 }; | |
85 | |
86 private: | |
87 void didDraw(const GraphicsContext*, const SkRect&, const SkPaint&, const Sk
Bitmap* sourceBitmap, bool fillsBounds, DrawType); | |
88 void applyOpaqueRegionFromLayer(const GraphicsContext*, const SkRect& layerO
paqueRect, const SkPaint&); | |
89 void markRectAsOpaque(const SkRect&); | |
90 void markRectAsNonOpaque(const SkRect&); | |
91 void markAllAsNonOpaque(); | |
92 | |
93 SkRect& currentTrackingOpaqueRect(); | |
94 | |
95 SkRect m_opaqueRect; | |
96 | |
97 Vector<CanvasLayerState, 3> m_canvasLayerStack; | |
98 }; | |
99 | |
100 } | |
101 #endif // OpaqueRegionSkia_h | |
OLD | NEW |