sky/engine/core/rendering/PaintInvalidationState.cpp - Issue 823123003: Delete PaintInvalidationState. It's unused.

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Issue 823123003: Delete PaintInvalidationState. It's unused. (Closed) Base URL: git@github.com:domokit/mojo.git@master

Patch Set: proper diff Created 5 years, 11 months ago

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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

3 // found in the LICENSE file.

4

5 #include "sky/engine/config.h"

6 #include "sky/engine/core/rendering/PaintInvalidationState.h"

7

8 #include "sky/engine/core/rendering/RenderInline.h"

9 #include "sky/engine/core/rendering/RenderLayer.h"

10 #include "sky/engine/core/rendering/RenderView.h"

11 #include "sky/engine/platform/Partitions.h"

12

13 namespace blink {

14

15 PaintInvalidationState::PaintInvalidationState(const RenderView& renderView)

16 : m_clipped(false)

17 , m_cachedOffsetsEnabled(true)

18 , m_forceCheckForPaintInvalidation(false)

19 , m_paintInvalidationContainer(*renderView.containerForPaintInvalidation())

20 , m_renderer(renderView)

21 {

22 bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalida tionContainer;

23 if (!establishesPaintInvalidationContainer) {

24 if (!renderView.supportsPaintInvalidationStateCachedOffsets()) {

25 m_cachedOffsetsEnabled = false;

26 return;

27 }

28 FloatPoint point = renderView.localToContainerPoint(FloatPoint(), &m_pai ntInvalidationContainer, TraverseDocumentBoundaries);

29 m_paintOffset = LayoutSize(point.x(), point.y());

30 }

31 m_clipRect = renderView.viewRect();

32 m_clipRect.move(m_paintOffset);

33 m_clipped = true;

34 }

35

36 PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& nex t, RenderLayerModelObject& renderer, const RenderLayerModelObject& paintInvalida tionContainer)

37 : m_clipped(false)

38 , m_cachedOffsetsEnabled(true)

39 , m_forceCheckForPaintInvalidation(next.m_forceCheckForPaintInvalidation)

40 , m_paintInvalidationContainer(paintInvalidationContainer)

41 , m_renderer(renderer)

42 {

43 // FIXME: SVG could probably benefit from a stack-based optimization like ht ml does. crbug.com/391054

44 bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalida tionContainer;

45

46 if (establishesPaintInvalidationContainer) {

47 // When we hit a new paint invalidation container, we don't need to

48 // continue forcing a check for paint invalidation because movement

49 // from our parents will just move the whole invalidation container.

50 m_forceCheckForPaintInvalidation = false;

51 } else {

52 if (!renderer.supportsPaintInvalidationStateCachedOffsets() \|\| !next.m_c achedOffsetsEnabled) {

53 m_cachedOffsetsEnabled = false;

54 } else {

55 LayoutSize offset = m_renderer.isBox() ? toRenderBox(renderer).locat ionOffset() : LayoutSize();

56 m_paintOffset = next.m_paintOffset + offset;

57

58 if (m_renderer.isOutOfFlowPositioned()) {

59 if (RenderObject* container = m_renderer.container()) {

60 if (container->style()->hasInFlowPosition() && container->is RenderInline())

61 m_paintOffset += toRenderInline(container)->offsetForInF lowPositionedInline(toRenderBox(renderer));

62 }

63 }

64

65 if (m_renderer.style()->hasInFlowPosition() && renderer.hasLayer())

66 m_paintOffset += renderer.layer()->offsetForInFlowPosition();

67 }

68

69 m_clipped = next.m_clipped;

70 if (m_clipped)

71 m_clipRect = next.m_clipRect;

72 }

73

74 applyClipIfNeeded(renderer);

75

76 // FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.

77 }

78

79 void PaintInvalidationState::applyClipIfNeeded(const RenderObject& renderer)

80 {

81 if (!renderer.hasOverflowClip())

82 return;

83

84 const RenderBox& box = toRenderBox(renderer);

85 LayoutRect clipRect(toPoint(m_paintOffset), box.layer()->size());

86 if (m_clipped) {

87 m_clipRect.intersect(clipRect);

88 } else {

89 m_clipRect = clipRect;

90 m_clipped = true;

91 }

92 m_paintOffset -= box.scrolledContentOffset();

93 }

94

95 } // namespace blink

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