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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; | |
16 struct PaintInvalidatorContext; | 15 struct PaintInvalidatorContext; |
17 | 16 |
18 class BoxPaintInvalidator { | 17 class BoxPaintInvalidator { |
19 STACK_ALLOCATED(); | 18 STACK_ALLOCATED(); |
20 | 19 |
21 public: | 20 public: |
22 BoxPaintInvalidator(const LayoutBox& box, | 21 BoxPaintInvalidator(const LayoutBox& box, |
23 const PaintInvalidatorContext& context) | 22 const PaintInvalidatorContext& context) |
24 : m_box(box), m_context(context) {} | 23 : m_box(box), m_context(context) {} |
25 | 24 |
26 static void boxWillBeDestroyed(const LayoutBox&); | 25 static void boxWillBeDestroyed(const LayoutBox&); |
27 | 26 |
28 PaintInvalidationReason invalidatePaintIfNeeded(); | 27 PaintInvalidationReason invalidatePaintIfNeeded(); |
29 | 28 |
30 static LayoutSize previousBorderBoxSize(const LayoutBox&, | |
31 const LayoutSize& defaultSize); | |
32 | |
33 private: | 29 private: |
34 bool backgroundGeometryDependsOnLayoutOverflowRect(); | 30 bool backgroundGeometryDependsOnLayoutOverflowRect(); |
35 bool backgroundPaintsOntoScrollingContentsLayer(); | 31 bool backgroundPaintsOntoScrollingContentsLayer(); |
36 bool shouldFullyInvalidateBackgroundOnLayoutOverflowChange( | 32 bool shouldFullyInvalidateBackgroundOnLayoutOverflowChange( |
37 const LayoutRect& oldLayoutOverflow, | 33 const LayoutRect& oldLayoutOverflow, |
38 const LayoutRect& newLayoutOverflow); | 34 const LayoutRect& newLayoutOverflow); |
39 void invalidateScrollingContentsBackgroundIfNeeded(); | 35 void invalidateScrollingContentsBackgroundIfNeeded(); |
40 | 36 |
41 PaintInvalidationReason computePaintInvalidationReason(); | 37 PaintInvalidationReason computePaintInvalidationReason(); |
42 | 38 |
43 bool incrementallyInvalidatePaint(PaintInvalidationReason, | 39 bool incrementallyInvalidatePaint(PaintInvalidationReason, |
44 const LayoutRect& oldRect, | 40 const LayoutRect& oldRect, |
45 const LayoutRect& newRect); | 41 const LayoutRect& newRect); |
46 | 42 |
47 bool needsToSavePreviousBoxGeometries(); | 43 bool needsToSavePreviousBoxGeometries(); |
48 void savePreviousBoxGeometriesIfNeeded(); | 44 void savePreviousBoxGeometriesIfNeeded(); |
49 LayoutRect previousContentBoxRect(); | 45 LayoutRect previousContentBoxRect(); |
50 LayoutRect previousLayoutOverflowRect(); | 46 LayoutRect previousLayoutOverflowRect(); |
51 | 47 |
52 const LayoutBox& m_box; | 48 const LayoutBox& m_box; |
53 const PaintInvalidatorContext& m_context; | 49 const PaintInvalidatorContext& m_context; |
54 }; | 50 }; |
55 | 51 |
56 } // namespace blink | 52 } // namespace blink |
57 | 53 |
58 #endif | 54 #endif |
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