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1 // Copyright 2010 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_PRIORITY_CALCULATOR_H_ | |
6 #define CC_PRIORITY_CALCULATOR_H_ | |
7 | |
8 #include "cc/base/cc_export.h" | |
9 | |
10 namespace gfx { class Rect; } | |
11 | |
12 namespace cc { | |
13 | |
14 class CC_EXPORT PriorityCalculator { | |
15 public: | |
16 static int UIPriority(bool draws_to_root_surface); | |
17 static int VisiblePriority(bool draws_to_root_surface); | |
18 static int RenderSurfacePriority(); | |
19 static int LingeringPriority(int previous_priority); | |
20 static int PriorityFromDistance(gfx::Rect visible_rect, | |
21 gfx::Rect texture_rect, | |
22 bool draws_to_root_surface); | |
23 static int SmallAnimatedLayerMinPriority(); | |
24 | |
25 static int HighestPriority(); | |
26 static int LowestPriority(); | |
27 static inline bool priority_is_lower(int a, int b) { return a > b; } | |
28 static inline bool priority_is_higher(int a, int b) { return a < b; } | |
29 static inline int max_priority(int a, int b) { | |
30 return priority_is_higher(a, b) ? a : b; | |
31 } | |
32 | |
33 static int AllowNothingCutoff(); | |
34 static int AllowVisibleOnlyCutoff(); | |
35 static int AllowVisibleAndNearbyCutoff(); | |
36 static int AllowEverythingCutoff(); | |
37 }; | |
38 | |
39 } | |
40 | |
41 #endif // CC_PRIORITY_CALCULATOR_H_ | |
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