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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 CachedDisplayItem_h | 5 #ifndef CachedDisplayItem_h |
6 #define CachedDisplayItem_h | 6 #define CachedDisplayItem_h |
7 | 7 |
8 #include "platform/graphics/paint/DisplayItem.h" | 8 #include "platform/graphics/paint/DisplayItem.h" |
9 #include "wtf/Assertions.h" | 9 #include "wtf/Assertions.h" |
10 | 10 |
11 namespace blink { | 11 namespace blink { |
12 | 12 |
13 // A placeholder of a DrawingDisplayItem or a subtree in the new paint DisplayIt
emList, | 13 // A placeholder of a DrawingDisplayItem or a subtree in the new paint DisplayIt
emList, |
14 // to indicate that the DrawingDisplayItem/subtree has not been changed and shou
ld be replaced with | 14 // to indicate that the DrawingDisplayItem/subtree has not been changed and shou
ld be replaced with |
15 // the cached DrawingDisplayItem/subtree when merging new paint list to cached p
aint list. | 15 // the cached DrawingDisplayItem/subtree when merging new paint list to cached p
aint list. |
16 class CachedDisplayItem final : public DisplayItem { | 16 class CachedDisplayItem final : public DisplayItem { |
17 public: | 17 public: |
18 CachedDisplayItem(const DisplayItemClientWrapper& client, Type type) | 18 CachedDisplayItem(const DisplayItemClient& client, Type type) |
19 : DisplayItem(client, type, sizeof(*this)) | 19 : DisplayItem(client, type, sizeof(*this)) |
20 { | 20 { |
21 ASSERT(isCachedType(type)); | 21 ASSERT(isCachedType(type)); |
22 } | 22 } |
23 | 23 |
24 private: | 24 private: |
25 // CachedDisplayItem is never replayed or appended to WebDisplayItemList. | 25 // CachedDisplayItem is never replayed or appended to WebDisplayItemList. |
26 void replay(GraphicsContext&) const final { ASSERT_NOT_REACHED(); } | 26 void replay(GraphicsContext&) const final { ASSERT_NOT_REACHED(); } |
27 void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const f
inal { ASSERT_NOT_REACHED(); } | 27 void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const f
inal { ASSERT_NOT_REACHED(); } |
28 }; | 28 }; |
29 | 29 |
30 } // namespace blink | 30 } // namespace blink |
31 | 31 |
32 #endif // CachedDisplayItem_h | 32 #endif // CachedDisplayItem_h |
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