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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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33 class FloatRect; | 33 class FloatRect; |
34 class GraphicsContext; | 34 class GraphicsContext; |
35 class GraphicsContextStateSaver; | 35 class GraphicsContextStateSaver; |
36 class PaintInvalidationState; | 36 class PaintInvalidationState; |
37 class LayoutRect; | 37 class LayoutRect; |
38 struct PaintInfo; | 38 struct PaintInfo; |
39 class LayoutGeometryMap; | 39 class LayoutGeometryMap; |
40 class LayoutLayerModelObject; | 40 class LayoutLayerModelObject; |
41 class LayoutObject; | 41 class LayoutObject; |
42 class LayoutStyle; | 42 class LayoutStyle; |
43 class RenderSVGRoot; | 43 class LayoutSVGRoot; |
44 class StrokeData; | 44 class StrokeData; |
45 class TransformState; | 45 class TransformState; |
46 | 46 |
47 class SVGLayoutSupport { | 47 class SVGLayoutSupport { |
48 public: | 48 public: |
49 // Shares child layouting code between RenderSVGRoot/RenderSVG(Hidden)Contai
ner | 49 // Shares child layouting code between LayoutSVGRoot/LayoutSVG(Hidden)Contai
ner |
50 static void layoutChildren(LayoutObject*, bool selfNeedsLayout); | 50 static void layoutChildren(LayoutObject*, bool selfNeedsLayout); |
51 | 51 |
52 // Layout resources used by this node. | 52 // Layout resources used by this node. |
53 static void layoutResourcesIfNeeded(const LayoutObject*); | 53 static void layoutResourcesIfNeeded(const LayoutObject*); |
54 | 54 |
55 // Helper function determining whether overflow is hidden. | 55 // Helper function determining whether overflow is hidden. |
56 static bool isOverflowHidden(const LayoutObject*); | 56 static bool isOverflowHidden(const LayoutObject*); |
57 | 57 |
58 // Calculates the paintInvalidationRect in combination with filter, clipper
and masker in local coordinates. | 58 // Calculates the paintInvalidationRect in combination with filter, clipper
and masker in local coordinates. |
59 static void intersectPaintInvalidationRectWithResources(const LayoutObject*,
FloatRect&); | 59 static void intersectPaintInvalidationRectWithResources(const LayoutObject*,
FloatRect&); |
60 | 60 |
61 // Determines whether a container needs to be laid out because it's filtered
and a child is being laid out. | 61 // Determines whether a container needs to be laid out because it's filtered
and a child is being laid out. |
62 static bool filtersForceContainerLayout(LayoutObject*); | 62 static bool filtersForceContainerLayout(LayoutObject*); |
63 | 63 |
64 // Determines whether the passed point lies in a clipping area | 64 // Determines whether the passed point lies in a clipping area |
65 static bool pointInClippingArea(LayoutObject*, const FloatPoint&); | 65 static bool pointInClippingArea(LayoutObject*, const FloatPoint&); |
66 | 66 |
67 // Transform |pointInParent| to |object|'s user-space and check if it is | 67 // Transform |pointInParent| to |object|'s user-space and check if it is |
68 // within the clipping area. Returns false if the transform is singular or | 68 // within the clipping area. Returns false if the transform is singular or |
69 // the point is outside the clipping area. | 69 // the point is outside the clipping area. |
70 static bool transformToUserSpaceAndCheckClipping(LayoutObject*, const Affine
Transform& localTransform, const FloatPoint& pointInParent, FloatPoint& localPoi
nt); | 70 static bool transformToUserSpaceAndCheckClipping(LayoutObject*, const Affine
Transform& localTransform, const FloatPoint& pointInParent, FloatPoint& localPoi
nt); |
71 | 71 |
72 static void computeContainerBoundingBoxes(const LayoutObject* container, Flo
atRect& objectBoundingBox, bool& objectBoundingBoxValid, FloatRect& strokeBoundi
ngBox, FloatRect& paintInvalidationBoundingBox); | 72 static void computeContainerBoundingBoxes(const LayoutObject* container, Flo
atRect& objectBoundingBox, bool& objectBoundingBoxValid, FloatRect& strokeBoundi
ngBox, FloatRect& paintInvalidationBoundingBox); |
73 | 73 |
74 // Important functions used by nearly all SVG renderers centralizing coordin
ate transformations / paint invalidation rect calculations | 74 // Important functions used by nearly all SVG renderers centralizing coordin
ate transformations / paint invalidation rect calculations |
75 static LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutObject
*, const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalida
tionState*); | 75 static LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutObject
*, const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalida
tionState*); |
76 static const RenderSVGRoot& mapRectToSVGRootForPaintInvalidation(const Layou
tObject*, const FloatRect& localPaintInvalidationRect, LayoutRect&); | 76 static const LayoutSVGRoot& mapRectToSVGRootForPaintInvalidation(const Layou
tObject*, const FloatRect& localPaintInvalidationRect, LayoutRect&); |
77 static void mapLocalToContainer(const LayoutObject*, const LayoutLayerModelO
bject* paintInvalidationContainer, TransformState&, bool* wasFixed = 0, const Pa
intInvalidationState* = 0); | 77 static void mapLocalToContainer(const LayoutObject*, const LayoutLayerModelO
bject* paintInvalidationContainer, TransformState&, bool* wasFixed = 0, const Pa
intInvalidationState* = 0); |
78 static const LayoutObject* pushMappingToContainer(const LayoutObject*, const
LayoutLayerModelObject* ancestorToStopAt, LayoutGeometryMap&); | 78 static const LayoutObject* pushMappingToContainer(const LayoutObject*, const
LayoutLayerModelObject* ancestorToStopAt, LayoutGeometryMap&); |
79 | 79 |
80 // Shared between SVG renderers and resources. | 80 // Shared between SVG renderers and resources. |
81 static void applyStrokeStyleToContext(GraphicsContext&, const LayoutStyle&,
const LayoutObject&); | 81 static void applyStrokeStyleToContext(GraphicsContext&, const LayoutStyle&,
const LayoutObject&); |
82 static void applyStrokeStyleToStrokeData(StrokeData&, const LayoutStyle&, co
nst LayoutObject&); | 82 static void applyStrokeStyleToStrokeData(StrokeData&, const LayoutStyle&, co
nst LayoutObject&); |
83 | 83 |
84 // Update the GC state (on |paintInfo.context|) for painting |renderer| | 84 // Update the GC state (on |paintInfo.context|) for painting |renderer| |
85 // using |style|. |resourceMode| is used to decide between fill/stroke. | 85 // using |style|. |resourceMode| is used to decide between fill/stroke. |
86 // Previous state will be saved (if needed) using |stateSaver|. | 86 // Previous state will be saved (if needed) using |stateSaver|. |
87 static bool updateGraphicsContext(const PaintInfo&, GraphicsContextStateSave
r&, const LayoutStyle&, LayoutObject&, LayoutSVGResourceMode, const AffineTransf
orm* additionalPaintServerTransform = 0); | 87 static bool updateGraphicsContext(const PaintInfo&, GraphicsContextStateSave
r&, const LayoutStyle&, LayoutObject&, LayoutSVGResourceMode, const AffineTransf
orm* additionalPaintServerTransform = 0); |
88 | 88 |
89 // Determines if any ancestor's transform has changed. | 89 // Determines if any ancestor's transform has changed. |
90 static bool transformToRootChanged(LayoutObject*); | 90 static bool transformToRootChanged(LayoutObject*); |
91 | 91 |
92 // FIXME: These methods do not belong here. | 92 // FIXME: These methods do not belong here. |
93 static const RenderSVGRoot* findTreeRootObject(const LayoutObject*); | 93 static const LayoutSVGRoot* findTreeRootObject(const LayoutObject*); |
94 | 94 |
95 // Helper method for determining if a LayoutObject marked as text (isText()=
= true) | 95 // Helper method for determining if a LayoutObject marked as text (isText()=
= true) |
96 // can/will be rendered as part of a <text>. | 96 // can/will be rendered as part of a <text>. |
97 static bool isRenderableTextNode(const LayoutObject*); | 97 static bool isRenderableTextNode(const LayoutObject*); |
98 | 98 |
99 // Determines whether a svg node should isolate or not based on LayoutStyle. | 99 // Determines whether a svg node should isolate or not based on LayoutStyle. |
100 static bool willIsolateBlendingDescendantsForStyle(const LayoutStyle&); | 100 static bool willIsolateBlendingDescendantsForStyle(const LayoutStyle&); |
101 static bool willIsolateBlendingDescendantsForObject(const LayoutObject*); | 101 static bool willIsolateBlendingDescendantsForObject(const LayoutObject*); |
102 template<typename LayoutObjectType> | 102 template<typename LayoutObjectType> |
103 static bool computeHasNonIsolatedBlendingDescendants(const LayoutObjectType*
); | 103 static bool computeHasNonIsolatedBlendingDescendants(const LayoutObjectType*
); |
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127 return true; | 127 return true; |
128 if (child->hasNonIsolatedBlendingDescendants() && !willIsolateBlendingDe
scendantsForObject(child)) | 128 if (child->hasNonIsolatedBlendingDescendants() && !willIsolateBlendingDe
scendantsForObject(child)) |
129 return true; | 129 return true; |
130 } | 130 } |
131 return false; | 131 return false; |
132 } | 132 } |
133 | 133 |
134 } // namespace blink | 134 } // namespace blink |
135 | 135 |
136 #endif // SVGLayoutSupport_h | 136 #endif // SVGLayoutSupport_h |
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