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Side by Side Diff: Source/platform/graphics/paint/SubtreeDisplayItem.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 SubtreeDisplayItem_h 5 #ifndef SubtreeDisplayItem_h
6 #define SubtreeDisplayItem_h 6 #define SubtreeDisplayItem_h
7 7
8 #include "platform/geometry/FloatRect.h" 8 #include "platform/geometry/FloatRect.h"
9 #include "platform/graphics/paint/DisplayItem.h" 9 #include "platform/graphics/paint/DisplayItem.h"
10 #include "wtf/Assertions.h" 10 #include "wtf/Assertions.h"
11 11
12 namespace blink { 12 namespace blink {
13 13
14 class BeginSubtreeDisplayItem final : public PairedBeginDisplayItem { 14 class BeginSubtreeDisplayItem final : public PairedBeginDisplayItem {
15 public: 15 public:
16 BeginSubtreeDisplayItem(const DisplayItemClientWrapper& client, Type type) 16 BeginSubtreeDisplayItem(const DisplayItemClientWrapper& client)
17 : PairedBeginDisplayItem(client, type, sizeof(*this)) 17 : PairedBeginDisplayItem(client, BeginSubtree, sizeof(*this))
18 { 18 { }
19 ASSERT(isBeginSubtreeType(type));
20 }
21 }; 19 };
22 20
23 class EndSubtreeDisplayItem final : public PairedEndDisplayItem { 21 class EndSubtreeDisplayItem final : public PairedEndDisplayItem {
24 public: 22 public:
25 EndSubtreeDisplayItem(const DisplayItemClientWrapper& client, Type type) 23 EndSubtreeDisplayItem(const DisplayItemClientWrapper& client)
26 : PairedEndDisplayItem(client, type, sizeof(*this)) 24 : PairedEndDisplayItem(client, EndSubtree, sizeof(*this))
27 { 25 { }
28 ASSERT(isEndSubtreeType(type));
29 }
30 26
31 #if ENABLE(ASSERT) 27 #if ENABLE(ASSERT)
32 bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return Di splayItem::isBeginSubtreeType(otherType); } 28 bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return ot herType == BeginSubtree; }
33 #endif 29 #endif
34 }; 30 };
35 31
36 } // namespace blink 32 } // namespace blink
37 33
38 #endif // SubtreeDisplayItem_h 34 #endif // SubtreeDisplayItem_h
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