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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 ScrollDisplayItem_h | 5 #ifndef ScrollDisplayItem_h |
| 6 #define ScrollDisplayItem_h | 6 #define ScrollDisplayItem_h |
| 7 | 7 |
| 8 #include "platform/geometry/IntSize.h" | 8 #include "platform/geometry/IntSize.h" |
| 9 #include "platform/graphics/paint/DisplayItem.h" | 9 #include "platform/graphics/paint/DisplayItem.h" |
| 10 #include "platform/wtf/Allocator.h" | 10 #include "platform/wtf/Allocator.h" |
| 11 | 11 |
| 12 namespace blink { | 12 namespace blink { |
| 13 | 13 |
| 14 class PLATFORM_EXPORT BeginScrollDisplayItem final | 14 class PLATFORM_EXPORT BeginScrollDisplayItem final |
| 15 : public PairedBeginDisplayItem { | 15 : public PairedBeginDisplayItem { |
| 16 public: | 16 public: |
| 17 BeginScrollDisplayItem(const DisplayItemClient& client, | 17 BeginScrollDisplayItem(const DisplayItemClient& client, |
| 18 Type type, | 18 Type type, |
| 19 const IntSize& current_offset) | 19 const IntSize& current_offset) |
| 20 : PairedBeginDisplayItem(client, type, sizeof(*this)), | 20 : PairedBeginDisplayItem(client, type, sizeof(*this)), |
| 21 current_offset_(current_offset) { | 21 current_offset_(current_offset) { |
| 22 ASSERT(IsScrollType(type)); | 22 DCHECK(IsScrollType(type)); |
| 23 } | 23 } |
| 24 | 24 |
| 25 void Replay(GraphicsContext&) const override; | 25 void Replay(GraphicsContext&) const override; |
| 26 void AppendToWebDisplayItemList(const IntRect&, | 26 void AppendToWebDisplayItemList(const IntRect&, |
| 27 WebDisplayItemList*) const override; | 27 WebDisplayItemList*) const override; |
| 28 | 28 |
| 29 const IntSize& CurrentOffset() const { return current_offset_; } | 29 const IntSize& CurrentOffset() const { return current_offset_; } |
| 30 | 30 |
| 31 private: | 31 private: |
| 32 #ifndef NDEBUG | 32 #ifndef NDEBUG |
| 33 void DumpPropertiesAsDebugString(WTF::StringBuilder&) const final; | 33 void DumpPropertiesAsDebugString(WTF::StringBuilder&) const final; |
| 34 #endif | 34 #endif |
| 35 bool Equals(const DisplayItem& other) const final { | 35 bool Equals(const DisplayItem& other) const final { |
| 36 return DisplayItem::Equals(other) && | 36 return DisplayItem::Equals(other) && |
| 37 current_offset_ == static_cast<const BeginScrollDisplayItem&>(other) | 37 current_offset_ == static_cast<const BeginScrollDisplayItem&>(other) |
| 38 .current_offset_; | 38 .current_offset_; |
| 39 } | 39 } |
| 40 | 40 |
| 41 const IntSize current_offset_; | 41 const IntSize current_offset_; |
| 42 }; | 42 }; |
| 43 | 43 |
| 44 class PLATFORM_EXPORT EndScrollDisplayItem final : public PairedEndDisplayItem { | 44 class PLATFORM_EXPORT EndScrollDisplayItem final : public PairedEndDisplayItem { |
| 45 public: | 45 public: |
| 46 EndScrollDisplayItem(const DisplayItemClient& client, Type type) | 46 EndScrollDisplayItem(const DisplayItemClient& client, Type type) |
| 47 : PairedEndDisplayItem(client, type, sizeof(*this)) { | 47 : PairedEndDisplayItem(client, type, sizeof(*this)) { |
| 48 ASSERT(IsEndScrollType(type)); | 48 DCHECK(IsEndScrollType(type)); |
| 49 } | 49 } |
| 50 | 50 |
| 51 void Replay(GraphicsContext&) const override; | 51 void Replay(GraphicsContext&) const override; |
| 52 void AppendToWebDisplayItemList(const IntRect&, | 52 void AppendToWebDisplayItemList(const IntRect&, |
| 53 WebDisplayItemList*) const override; | 53 WebDisplayItemList*) const override; |
| 54 | 54 |
| 55 private: | 55 private: |
| 56 #if DCHECK_IS_ON() | 56 #if DCHECK_IS_ON() |
| 57 bool IsEndAndPairedWith(DisplayItem::Type other_type) const final { | 57 bool IsEndAndPairedWith(DisplayItem::Type other_type) const final { |
| 58 return DisplayItem::IsScrollType(other_type); | 58 return DisplayItem::IsScrollType(other_type); |
| 59 } | 59 } |
| 60 #endif | 60 #endif |
| 61 }; | 61 }; |
| 62 | 62 |
| 63 } // namespace blink | 63 } // namespace blink |
| 64 | 64 |
| 65 #endif // ScrollDisplayItem_h | 65 #endif // ScrollDisplayItem_h |
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