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Side by Side Diff: Source/platform/graphics/paint/SubtreeRecorder.h

Issue 1313223002: Simplify subtree (now subsequence) caching (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 5 years, 3 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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 SubtreeRecorder_h 5 #ifndef SubtreeRecorder_h
6 #define SubtreeRecorder_h 6 #define SubtreeRecorder_h
7 7
8 #include "platform/graphics/paint/DisplayItemClient.h" 8 #include "platform/graphics/paint/DisplayItemClient.h"
9 9
10 namespace blink { 10 namespace blink {
11 11
12 class DisplayItemList; 12 class DisplayItemList;
13 class GraphicsContext; 13 class GraphicsContext;
14 14
15 // Records subtree information during painting. The recorder's life span covers 15 // Records subtree information during painting. The recorder's life span covers
16 // all painting operations executed during the root of the subtree's paint metho d 16 // all painting operations executed during the root of the subtree's paint metho d
17 // for the paint phase. 17 // for the paint phase.
18 class PLATFORM_EXPORT SubtreeRecorder { 18 class PLATFORM_EXPORT SubtreeRecorder {
19 public: 19 public:
20 SubtreeRecorder(GraphicsContext&, const DisplayItemClientWrapper&, int paint Phase); 20 static bool useCachedSubtreeIfPossible(GraphicsContext&, const DisplayItemCl ientWrapper&);
21
22 SubtreeRecorder(GraphicsContext&, const DisplayItemClientWrapper&);
21 ~SubtreeRecorder(); 23 ~SubtreeRecorder();
22 24
23 bool canUseCache() const;
24
25 private: 25 private:
26 DisplayItemList* m_displayItemList; 26 DisplayItemList* m_displayItemList;
27 DisplayItemClientWrapper m_client; 27 DisplayItemClientWrapper m_client;
28 const int m_paintPhase;
29 bool m_canUseCache;
30 #if ENABLE(ASSERT)
31 mutable bool m_checkedCanUseCache;
32 #endif
33 }; 28 };
34 29
35 } // namespace blink 30 } // namespace blink
36 31
37 #endif // SubtreeRecorder_h 32 #endif // SubtreeRecorder_h
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