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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 ScrollRecorder_h | 5 #ifndef ScrollRecorder_h |
6 #define ScrollRecorder_h | 6 #define ScrollRecorder_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "core/paint/PaintPhase.h" | 9 #include "core/paint/PaintPhase.h" |
10 #include "platform/geometry/IntSize.h" | 10 #include "platform/geometry/IntSize.h" |
11 #include "platform/graphics/paint/DisplayItem.h" | 11 #include "platform/graphics/paint/DisplayItem.h" |
12 #include "wtf/Allocator.h" | 12 #include "wtf/Allocator.h" |
13 | 13 |
14 namespace blink { | 14 namespace blink { |
15 | 15 |
16 class GraphicsContext; | 16 class GraphicsContext; |
17 | 17 |
18 // Emits display items which represent a region which is scrollable, so that it | 18 // Emits display items which represent a region which is scrollable, so that it |
19 // can be translated by the scroll offset. | 19 // can be translated by the scroll offset. |
20 class CORE_EXPORT ScrollRecorder { | 20 class CORE_EXPORT ScrollRecorder { |
21 USING_FAST_MALLOC(ScrollRecorder); | 21 USING_FAST_MALLOC(ScrollRecorder); |
22 public: | 22 public: |
23 ScrollRecorder(GraphicsContext&, const DisplayItemClientWrapper&, PaintPhase
, const IntSize& currentOffset); | 23 ScrollRecorder(GraphicsContext&, const DisplayItemClient&, PaintPhase, const
IntSize& currentOffset); |
24 ~ScrollRecorder(); | 24 ~ScrollRecorder(); |
25 private: | 25 private: |
26 DisplayItemClientWrapper m_client; | 26 const DisplayItemClient& m_client; |
27 DisplayItem::Type m_beginItemType; | 27 DisplayItem::Type m_beginItemType; |
28 GraphicsContext& m_context; | 28 GraphicsContext& m_context; |
29 }; | 29 }; |
30 | 30 |
31 } // namespace blink | 31 } // namespace blink |
32 | 32 |
33 #endif // ScrollRecorder_h | 33 #endif // ScrollRecorder_h |
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