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1 /* | 1 /* |
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> | 2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> | 3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> |
4 * Copyright (C) 2007 Eric Seidel <eric@webkit.org> | 4 * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
5 * Copyright (C) 2009 Google, Inc. | 5 * Copyright (C) 2009 Google, Inc. |
6 * | 6 * |
7 * This library is free software; you can redistribute it and/or | 7 * This library is free software; you can redistribute it and/or |
8 * modify it under the terms of the GNU Library General Public | 8 * modify it under the terms of the GNU Library General Public |
9 * License as published by the Free Software Foundation; either | 9 * License as published by the Free Software Foundation; either |
10 * version 2 of the License, or (at your option) any later version. | 10 * version 2 of the License, or (at your option) any later version. |
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63 setNeedsTransformUpdate(); | 63 setNeedsTransformUpdate(); |
64 } | 64 } |
65 } | 65 } |
66 | 66 |
67 void LayoutSVGViewportContainer::setNeedsTransformUpdate() | 67 void LayoutSVGViewportContainer::setNeedsTransformUpdate() |
68 { | 68 { |
69 setMayNeedPaintInvalidationSubtree(); | 69 setMayNeedPaintInvalidationSubtree(); |
70 m_needsTransformUpdate = true; | 70 m_needsTransformUpdate = true; |
71 } | 71 } |
72 | 72 |
73 static std::pair<double, double> scaleReference(const AffineTransform& transform
) | 73 SVGTransformChange LayoutSVGViewportContainer::calculateLocalTransform() |
74 { | |
75 return std::make_pair(transform.xScaleSquared(), transform.yScaleSquared()); | |
76 } | |
77 | |
78 LayoutSVGContainer::TransformChange LayoutSVGViewportContainer::calculateLocalTr
ansform() | |
79 { | 74 { |
80 if (!m_needsTransformUpdate) | 75 if (!m_needsTransformUpdate) |
81 return TransformChange::None; | 76 return SVGTransformChange::None; |
82 | 77 |
83 std::pair<double, double> oldScale = scaleReference(m_localToParentTransform
); | 78 SVGTransformChangeDetector changeDetector(m_localToParentTransform); |
84 m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_vi
ewport.y()) * viewportTransform(); | 79 m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_vi
ewport.y()) * viewportTransform(); |
85 m_needsTransformUpdate = false; | 80 m_needsTransformUpdate = false; |
86 return scaleReference(m_localToParentTransform) != oldScale | 81 return changeDetector.computeChange(m_localToParentTransform); |
87 ? TransformChange::Full : TransformChange::ScaleInvariant; | |
88 } | 82 } |
89 | 83 |
90 AffineTransform LayoutSVGViewportContainer::viewportTransform() const | 84 AffineTransform LayoutSVGViewportContainer::viewportTransform() const |
91 { | 85 { |
92 ASSERT(element()); | 86 ASSERT(element()); |
93 if (isSVGSVGElement(*element())) { | 87 if (isSVGSVGElement(*element())) { |
94 SVGSVGElement* svg = toSVGSVGElement(element()); | 88 SVGSVGElement* svg = toSVGSVGElement(element()); |
95 return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height
()); | 89 return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height
()); |
96 } | 90 } |
97 | 91 |
98 return AffineTransform(); | 92 return AffineTransform(); |
99 } | 93 } |
100 | 94 |
101 bool LayoutSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& poi
ntInParent) | 95 bool LayoutSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& poi
ntInParent) |
102 { | 96 { |
103 // Respect the viewport clip (which is in parent coords) | 97 // Respect the viewport clip (which is in parent coords) |
104 if (!SVGLayoutSupport::isOverflowHidden(this)) | 98 if (!SVGLayoutSupport::isOverflowHidden(this)) |
105 return true; | 99 return true; |
106 | 100 |
107 return m_viewport.contains(pointInParent); | 101 return m_viewport.contains(pointInParent); |
108 } | 102 } |
109 | 103 |
110 void LayoutSVGViewportContainer::paint(const PaintInfo& paintInfo, const LayoutP
oint& paintOffset) const | 104 void LayoutSVGViewportContainer::paint(const PaintInfo& paintInfo, const LayoutP
oint& paintOffset) const |
111 { | 105 { |
112 SVGContainerPainter(*this).paint(paintInfo); | 106 SVGContainerPainter(*this).paint(paintInfo); |
113 } | 107 } |
114 | 108 |
115 } // namespace blink | 109 } // namespace blink |
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