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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 FixedPositionDisplayItem_h | 5 #ifndef FixedPositionDisplayItem_h |
6 #define FixedPositionDisplayItem_h | 6 #define FixedPositionDisplayItem_h |
7 | 7 |
8 #include "platform/geometry/LayoutSize.h" | 8 #include "platform/geometry/LayoutSize.h" |
9 #include "platform/graphics/paint/DisplayItem.h" | 9 #include "platform/graphics/paint/DisplayItem.h" |
10 #include "wtf/FastAllocBase.h" | 10 #include "wtf/FastAllocBase.h" |
11 #include "wtf/PassOwnPtr.h" | 11 #include "wtf/PassOwnPtr.h" |
12 | 12 |
13 namespace blink { | 13 namespace blink { |
14 | 14 |
15 class PLATFORM_EXPORT BeginFixedPositionDisplayItem final : public PairedBeginDi splayItem { | 15 class PLATFORM_EXPORT BeginFixedPositionDisplayItem final : public PairedBeginDi splayItem { |
16 public: | 16 public: |
17 BeginFixedPositionDisplayItem(const DisplayItemClientWrapper& client) | 17 BeginFixedPositionDisplayItem(const DisplayItemClientWrapper& client, const DisplayItemClientWrapper& anchor) |
18 : PairedBeginDisplayItem(client, BeginFixedPosition, sizeof(*this)) { } | 18 : PairedBeginDisplayItem(client, BeginFixedPosition, sizeof(*this)), m_a nchor(anchor.displayItemClient()) { } |
19 | 19 |
20 void replay(GraphicsContext&) final { } | 20 void replay(GraphicsContext&) final { } |
21 void appendToWebDisplayItemList(WebDisplayItemList*) const final; | 21 void appendToWebDisplayItemList(WebDisplayItemList*) const final; |
22 | |
23 DisplayItemClient anchor() const { return m_anchor; } | |
jbroman
2015/09/09 19:58:31
nit: Would you mind a comment (here or as a class
| |
24 | |
25 // Note: This is only temporarily workaround before we implement true | |
26 // transform-tree-based rasterization. Do not use. | |
27 void setCounterScroll(const FloatSize& counterScroll) const { m_counterScrol l = counterScroll; } | |
28 | |
29 private: | |
30 // Note: This is only temporarily workaround before we implement true | |
31 // transform-tree-based rasterization. Do not use. | |
32 mutable FloatSize m_counterScroll; | |
33 | |
34 DisplayItemClient m_anchor; | |
22 }; | 35 }; |
23 | 36 |
24 class PLATFORM_EXPORT EndFixedPositionDisplayItem final : public PairedEndDispla yItem { | 37 class PLATFORM_EXPORT EndFixedPositionDisplayItem final : public PairedEndDispla yItem { |
25 public: | 38 public: |
26 EndFixedPositionDisplayItem(const DisplayItemClientWrapper& client) | 39 EndFixedPositionDisplayItem(const DisplayItemClientWrapper& client) |
27 : PairedEndDisplayItem(client, EndFixedPosition, sizeof(*this)) { } | 40 : PairedEndDisplayItem(client, EndFixedPosition, sizeof(*this)) { } |
28 | 41 |
29 void replay(GraphicsContext&) final { } | 42 void replay(GraphicsContext&) final { } |
30 void appendToWebDisplayItemList(WebDisplayItemList*) const final; | 43 void appendToWebDisplayItemList(WebDisplayItemList*) const final; |
31 | 44 |
32 private: | 45 private: |
33 #if ENABLE(ASSERT) | 46 #if ENABLE(ASSERT) |
34 bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return ot herType == BeginFixedPosition; } | 47 bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return ot herType == BeginFixedPosition; } |
35 #endif | 48 #endif |
36 }; | 49 }; |
37 | 50 |
38 } // namespace blink | 51 } // namespace blink |
39 | 52 |
40 #endif // FixedPositionDisplayItem_h | 53 #endif // FixedPositionDisplayItem_h |
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