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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CC_TREES_CLIP_EXPANDER_H_ | |
6 #define CC_TREES_CLIP_EXPANDER_H_ | |
7 | |
8 #include "cc/base/cc_export.h" | |
9 #include "ui/gfx/geometry/rect.h" | |
10 | |
11 namespace gfx { | |
12 class Transform; | |
13 } | |
14 | |
15 namespace cc { | |
16 | |
17 class PropertyTrees; | |
18 | |
19 class CC_EXPORT ClipExpander { | |
20 public: | |
21 enum class ExpanderType { FILTER }; | |
22 | |
23 ClipExpander(ExpanderType type, int filter_effect_id); | |
weiliangc
2016/10/31 18:20:25
Is there an expander type that is not Filter that
ajuma
2016/10/31 18:28:05
Yeah, I believe there are other kinds of expanding
| |
24 ClipExpander(const ClipExpander& other); | |
25 | |
26 bool operator==(const ClipExpander& other) const; | |
27 | |
28 bool operator!=(const ClipExpander& other) const { return !(*this == other); } | |
29 | |
30 // Maps "forward" to determine which pixels in a destination rect are affected | |
31 // by pixels in the given source rect. | |
32 gfx::Rect MapRect(const gfx::Rect& rect, | |
33 const PropertyTrees* property_trees) const; | |
34 | |
35 // Maps "backward" to determine which pixels in the source affect the pixels | |
36 // in the given destination rect. | |
37 gfx::Rect MapRectReverse(const gfx::Rect& rect, | |
38 const PropertyTrees* property_trees) const; | |
39 | |
40 // The id of the effect node in whose transform space the expansion happens. | |
41 int target_effect_id() const { return target_effect_id_; } | |
42 | |
43 private: | |
44 ExpanderType expander_type_; | |
45 | |
46 int target_effect_id_; | |
47 }; | |
48 | |
49 } // namespace cc | |
50 | |
51 #endif // CC_TREES_CLIP_EXPANDER_H_ | |
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