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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 BoxPaintInvalidator_h | 5 #ifndef BoxPaintInvalidator_h |
6 #define BoxPaintInvalidator_h | 6 #define BoxPaintInvalidator_h |
7 | 7 |
8 #include "platform/graphics/PaintInvalidationReason.h" | 8 #include "platform/graphics/PaintInvalidationReason.h" |
9 #include "wtf/Allocator.h" | 9 #include "wtf/Allocator.h" |
10 | 10 |
11 namespace blink { | 11 namespace blink { |
12 | 12 |
13 class LayoutBox; | 13 class LayoutBox; |
14 class LayoutRect; | 14 class LayoutRect; |
15 class LayoutSize; | 15 class LayoutSize; |
16 struct PaintInvalidatorContext; | 16 struct PaintInvalidatorContext; |
17 | 17 |
18 class BoxPaintInvalidator { | 18 class BoxPaintInvalidator { |
19 STACK_ALLOCATED(); | 19 STACK_ALLOCATED(); |
20 | 20 |
21 public: | 21 public: |
22 BoxPaintInvalidator(const LayoutBox& box, | 22 BoxPaintInvalidator(const LayoutBox& box, |
23 const PaintInvalidatorContext& context) | 23 const PaintInvalidatorContext& context) |
24 : m_box(box), m_context(context) {} | 24 : m_box(box), m_context(context) {} |
25 | 25 |
26 static void boxWillBeDestroyed(const LayoutBox&); | 26 static void boxWillBeDestroyed(const LayoutBox&); |
27 | 27 |
28 PaintInvalidationReason invalidatePaintIfNeeded(); | 28 PaintInvalidationReason invalidatePaintIfNeeded(); |
29 | 29 |
30 static LayoutSize previousBorderBoxSize(const LayoutBox&); | |
Xianzhu
2017/02/16 20:47:09
I will follow-up to try adding LayoutBox::m_previo
| |
31 | |
30 private: | 32 private: |
31 bool backgroundGeometryDependsOnLayoutOverflowRect(); | 33 bool backgroundGeometryDependsOnLayoutOverflowRect(); |
32 bool backgroundPaintsOntoScrollingContentsLayer(); | 34 bool backgroundPaintsOntoScrollingContentsLayer(); |
33 bool shouldFullyInvalidateBackgroundOnLayoutOverflowChange( | 35 bool shouldFullyInvalidateBackgroundOnLayoutOverflowChange( |
34 const LayoutRect& oldLayoutOverflow, | 36 const LayoutRect& oldLayoutOverflow, |
35 const LayoutRect& newLayoutOverflow); | 37 const LayoutRect& newLayoutOverflow); |
36 void invalidateScrollingContentsBackgroundIfNeeded(); | 38 void invalidateScrollingContentsBackgroundIfNeeded(); |
37 | 39 |
38 PaintInvalidationReason computePaintInvalidationReason(); | 40 PaintInvalidationReason computePaintInvalidationReason(); |
39 | 41 |
40 bool incrementallyInvalidatePaint(PaintInvalidationReason, | 42 bool incrementallyInvalidatePaint(PaintInvalidationReason, |
41 const LayoutRect& oldRect, | 43 const LayoutRect& oldRect, |
42 const LayoutRect& newRect); | 44 const LayoutRect& newRect); |
43 | 45 |
44 bool needsToSavePreviousBoxGeometries(); | 46 bool needsToSavePreviousBoxGeometries(); |
45 void savePreviousBoxGeometriesIfNeeded(); | 47 void savePreviousBoxGeometriesIfNeeded(); |
46 LayoutSize previousBorderBoxSize(); | 48 LayoutSize previousBorderBoxSize(); |
47 LayoutRect previousContentBoxRect(); | 49 LayoutRect previousContentBoxRect(); |
48 LayoutRect previousLayoutOverflowRect(); | 50 LayoutRect previousLayoutOverflowRect(); |
49 | 51 |
50 const LayoutBox& m_box; | 52 const LayoutBox& m_box; |
51 const PaintInvalidatorContext& m_context; | 53 const PaintInvalidatorContext& m_context; |
52 }; | 54 }; |
53 | 55 |
54 } // namespace blink | 56 } // namespace blink |
55 | 57 |
56 #endif | 58 #endif |
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