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1 /** | 1 /** |
2 * Copyright (C) 2007 Rob Buis <buis@kde.org> | 2 * Copyright (C) 2007 Rob Buis <buis@kde.org> |
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> | 3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@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. All rights reserved. | 5 * Copyright (C) 2009 Google, Inc. All rights reserved. |
6 * Copyright (C) Research In Motion Limited 2010. All rights reserved. | 6 * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
7 * | 7 * |
8 * This library is free software; you can redistribute it and/or | 8 * This library is free software; you can redistribute it and/or |
9 * modify it under the terms of the GNU Library General Public | 9 * modify it under the terms of the GNU Library General Public |
10 * License as published by the Free Software Foundation; either | 10 * License as published by the Free Software Foundation; either |
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43 class ComputedStyle; | 43 class ComputedStyle; |
44 class LayoutSVGRoot; | 44 class LayoutSVGRoot; |
45 class SVGLengthContext; | 45 class SVGLengthContext; |
46 class StrokeData; | 46 class StrokeData; |
47 class TransformState; | 47 class TransformState; |
48 | 48 |
49 class CORE_EXPORT SVGLayoutSupport { | 49 class CORE_EXPORT SVGLayoutSupport { |
50 STATIC_ONLY(SVGLayoutSupport); | 50 STATIC_ONLY(SVGLayoutSupport); |
51 | 51 |
52 public: | 52 public: |
53 // Shares child layouting code between LayoutSVGRoot/LayoutSVG(Hidden)Containe
r | 53 // Shares child layouting code between |
| 54 // LayoutSVGRoot/LayoutSVG(Hidden)Container |
54 static void layoutChildren(LayoutObject*, | 55 static void layoutChildren(LayoutObject*, |
55 bool forceLayout, | 56 bool forceLayout, |
56 bool screenScalingFactorChanged, | 57 bool screenScalingFactorChanged, |
57 bool layoutSizeChanged); | 58 bool layoutSizeChanged); |
58 | 59 |
59 // Layout resources used by this node. | 60 // Layout resources used by this node. |
60 static void layoutResourcesIfNeeded(const LayoutObject*); | 61 static void layoutResourcesIfNeeded(const LayoutObject*); |
61 | 62 |
62 // Helper function determining whether overflow is hidden. | 63 // Helper function determining whether overflow is hidden. |
63 static bool isOverflowHidden(const LayoutObject*); | 64 static bool isOverflowHidden(const LayoutObject*); |
64 | 65 |
65 // Calculates the paintInvalidationRect in combination with filter, clipper an
d masker in local coordinates. | 66 // Calculates the paintInvalidationRect in combination with filter, clipper |
| 67 // and masker in local coordinates. |
66 static void intersectPaintInvalidationRectWithResources(const LayoutObject*, | 68 static void intersectPaintInvalidationRectWithResources(const LayoutObject*, |
67 FloatRect&); | 69 FloatRect&); |
68 | 70 |
69 // Determine if the LayoutObject references a filter resource object. | 71 // Determine if the LayoutObject references a filter resource object. |
70 static bool hasFilterResource(const LayoutObject&); | 72 static bool hasFilterResource(const LayoutObject&); |
71 | 73 |
72 // Determines whether the passed point lies in a clipping area | 74 // Determines whether the passed point lies in a clipping area |
73 static bool pointInClippingArea(const LayoutObject&, const FloatPoint&); | 75 static bool pointInClippingArea(const LayoutObject&, const FloatPoint&); |
74 | 76 |
75 // Transform |pointInParent| to |object|'s user-space and check if it is | 77 // Transform |pointInParent| to |object|'s user-space and check if it is |
76 // within the clipping area. Returns false if the transform is singular or | 78 // within the clipping area. Returns false if the transform is singular or |
77 // the point is outside the clipping area. | 79 // the point is outside the clipping area. |
78 static bool transformToUserSpaceAndCheckClipping( | 80 static bool transformToUserSpaceAndCheckClipping( |
79 const LayoutObject&, | 81 const LayoutObject&, |
80 const AffineTransform& localTransform, | 82 const AffineTransform& localTransform, |
81 const FloatPoint& pointInParent, | 83 const FloatPoint& pointInParent, |
82 FloatPoint& localPoint); | 84 FloatPoint& localPoint); |
83 | 85 |
84 static void computeContainerBoundingBoxes( | 86 static void computeContainerBoundingBoxes( |
85 const LayoutObject* container, | 87 const LayoutObject* container, |
86 FloatRect& objectBoundingBox, | 88 FloatRect& objectBoundingBox, |
87 bool& objectBoundingBoxValid, | 89 bool& objectBoundingBoxValid, |
88 FloatRect& strokeBoundingBox, | 90 FloatRect& strokeBoundingBox, |
89 FloatRect& paintInvalidationBoundingBox); | 91 FloatRect& paintInvalidationBoundingBox); |
90 | 92 |
91 // Important functions used by nearly all SVG layoutObjects centralizing coord
inate transformations / paint invalidation rect calculations | 93 // Important functions used by nearly all SVG layoutObjects centralizing |
| 94 // coordinate transformations / paint invalidation rect calculations |
92 static FloatRect localOverflowRectForPaintInvalidation(const LayoutObject&); | 95 static FloatRect localOverflowRectForPaintInvalidation(const LayoutObject&); |
93 static LayoutRect clippedOverflowRectForPaintInvalidation( | 96 static LayoutRect clippedOverflowRectForPaintInvalidation( |
94 const LayoutObject&, | 97 const LayoutObject&, |
95 const LayoutBoxModelObject& paintInvalidationContainer); | 98 const LayoutBoxModelObject& paintInvalidationContainer); |
96 static LayoutRect transformPaintInvalidationRect(const LayoutObject&, | 99 static LayoutRect transformPaintInvalidationRect(const LayoutObject&, |
97 const AffineTransform&, | 100 const AffineTransform&, |
98 const FloatRect&); | 101 const FloatRect&); |
99 static bool mapToVisualRectInAncestorSpace( | 102 static bool mapToVisualRectInAncestorSpace( |
100 const LayoutObject&, | 103 const LayoutObject&, |
101 const LayoutBoxModelObject* ancestor, | 104 const LayoutBoxModelObject* ancestor, |
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126 | 129 |
127 // Determines if any ancestor has adjusted the scale factor. | 130 // Determines if any ancestor has adjusted the scale factor. |
128 static bool screenScaleFactorChanged(const LayoutObject*); | 131 static bool screenScaleFactorChanged(const LayoutObject*); |
129 | 132 |
130 // Determines if any ancestor's layout size has changed. | 133 // Determines if any ancestor's layout size has changed. |
131 static bool layoutSizeOfNearestViewportChanged(const LayoutObject*); | 134 static bool layoutSizeOfNearestViewportChanged(const LayoutObject*); |
132 | 135 |
133 // FIXME: These methods do not belong here. | 136 // FIXME: These methods do not belong here. |
134 static const LayoutSVGRoot* findTreeRootObject(const LayoutObject*); | 137 static const LayoutSVGRoot* findTreeRootObject(const LayoutObject*); |
135 | 138 |
136 // Helper method for determining if a LayoutObject marked as text (isText()==
true) | 139 // Helper method for determining if a LayoutObject marked as text (isText()== |
137 // can/will be laid out as part of a <text>. | 140 // true) can/will be laid out as part of a <text>. |
138 static bool isLayoutableTextNode(const LayoutObject*); | 141 static bool isLayoutableTextNode(const LayoutObject*); |
139 | 142 |
140 // Determines whether a svg node should isolate or not based on ComputedStyle. | 143 // Determines whether a svg node should isolate or not based on ComputedStyle. |
141 static bool willIsolateBlendingDescendantsForStyle(const ComputedStyle&); | 144 static bool willIsolateBlendingDescendantsForStyle(const ComputedStyle&); |
142 static bool willIsolateBlendingDescendantsForObject(const LayoutObject*); | 145 static bool willIsolateBlendingDescendantsForObject(const LayoutObject*); |
143 template <typename LayoutObjectType> | 146 template <typename LayoutObjectType> |
144 static bool computeHasNonIsolatedBlendingDescendants(const LayoutObjectType*); | 147 static bool computeHasNonIsolatedBlendingDescendants(const LayoutObjectType*); |
145 static bool isIsolationRequired(const LayoutObject*); | 148 static bool isIsolationRequired(const LayoutObject*); |
146 | 149 |
147 static AffineTransform deprecatedCalculateTransformToLayer( | 150 static AffineTransform deprecatedCalculateTransformToLayer( |
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219 if (child->hasNonIsolatedBlendingDescendants() && | 222 if (child->hasNonIsolatedBlendingDescendants() && |
220 !willIsolateBlendingDescendantsForObject(child)) | 223 !willIsolateBlendingDescendantsForObject(child)) |
221 return true; | 224 return true; |
222 } | 225 } |
223 return false; | 226 return false; |
224 } | 227 } |
225 | 228 |
226 } // namespace blink | 229 } // namespace blink |
227 | 230 |
228 #endif // SVGLayoutSupport_h | 231 #endif // SVGLayoutSupport_h |
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