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1 /* | |
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. | |
3 * | |
4 * This library is free software; you can redistribute it and/or | |
5 * modify it under the terms of the GNU Library General Public | |
6 * License as published by the Free Software Foundation; either | |
7 * version 2 of the License, or (at your option) any later version. | |
8 * | |
9 * This library is distributed in the hope that it will be useful, | |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 * Library General Public License for more details. | |
13 * | |
14 * You should have received a copy of the GNU Library General Public License | |
15 * along with this library; see the file COPYING.LIB. If not, write to | |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
17 * Boston, MA 02110-1301, USA. | |
18 */ | |
19 | |
20 #ifndef RenderSVGResourceContainer_h | |
21 #define RenderSVGResourceContainer_h | |
22 | |
23 #include "core/rendering/svg/RenderSVGHiddenContainer.h" | |
24 #include "core/svg/SVGDocumentExtensions.h" | |
25 | |
26 namespace blink { | |
27 | |
28 enum RenderSVGResourceType { | |
29 MaskerResourceType, | |
30 MarkerResourceType, | |
31 PatternResourceType, | |
32 LinearGradientResourceType, | |
33 RadialGradientResourceType, | |
34 FilterResourceType, | |
35 ClipperResourceType | |
36 }; | |
37 | |
38 class Layer; | |
39 | |
40 class RenderSVGResourceContainer : public RenderSVGHiddenContainer { | |
41 public: | |
42 explicit RenderSVGResourceContainer(SVGElement*); | |
43 virtual ~RenderSVGResourceContainer(); | |
44 | |
45 virtual void removeAllClientsFromCache(bool markForInvalidation = true) = 0; | |
46 virtual void removeClientFromCache(LayoutObject*, bool markForInvalidation =
true) = 0; | |
47 | |
48 virtual void layout() override; | |
49 virtual void styleDidChange(StyleDifference, const LayoutStyle* oldStyle) ov
erride final; | |
50 virtual bool isOfType(LayoutObjectType type) const override { return type ==
LayoutObjectSVGResourceContainer || RenderSVGHiddenContainer::isOfType(type); } | |
51 | |
52 virtual RenderSVGResourceType resourceType() const = 0; | |
53 | |
54 bool isSVGPaintServer() const | |
55 { | |
56 RenderSVGResourceType resourceType = this->resourceType(); | |
57 return resourceType == PatternResourceType | |
58 || resourceType == LinearGradientResourceType | |
59 || resourceType == RadialGradientResourceType; | |
60 } | |
61 | |
62 void idChanged(); | |
63 void addClientLayer(Node*); | |
64 void addClientLayer(Layer*); | |
65 void removeClientLayer(Layer*); | |
66 | |
67 void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = 0); | |
68 | |
69 static void markForLayoutAndParentResourceInvalidation(LayoutObject*, bool n
eedsLayout = true); | |
70 | |
71 protected: | |
72 // When adding modes, make sure we don't overflow m_invalidationMask below. | |
73 enum InvalidationMode { | |
74 LayoutAndBoundariesInvalidation = 1 << 0, | |
75 BoundariesInvalidation = 1 << 1, | |
76 PaintInvalidation = 1 << 2, | |
77 ParentOnlyInvalidation = 1 << 3 | |
78 }; | |
79 | |
80 // Used from the invalidateClient/invalidateClients methods from classes, in
heriting from us. | |
81 void markAllClientsForInvalidation(InvalidationMode); | |
82 void markAllClientLayersForInvalidation(); | |
83 void markClientForInvalidation(LayoutObject*, InvalidationMode); | |
84 | |
85 void clearInvalidationMask() { m_invalidationMask = 0; } | |
86 | |
87 bool m_isInLayout; | |
88 | |
89 private: | |
90 friend class SVGResourcesCache; | |
91 void addClient(LayoutObject*); | |
92 void removeClient(LayoutObject*); | |
93 | |
94 virtual void willBeDestroyed() override final; | |
95 void registerResource(); | |
96 | |
97 AtomicString m_id; | |
98 // Track global (markAllClientsForInvalidation) invals to avoid redundant cr
awls. | |
99 unsigned m_invalidationMask : 8; | |
100 | |
101 unsigned m_registered : 1; | |
102 unsigned m_isInvalidating : 1; | |
103 // 22 padding bits available | |
104 | |
105 HashSet<LayoutObject*> m_clients; | |
106 HashSet<Layer*> m_clientLayers; | |
107 }; | |
108 | |
109 inline RenderSVGResourceContainer* getRenderSVGResourceContainerById(TreeScope&
treeScope, const AtomicString& id) | |
110 { | |
111 if (id.isEmpty()) | |
112 return 0; | |
113 | |
114 if (RenderSVGResourceContainer* renderResource = treeScope.document().access
SVGExtensions().resourceById(id)) | |
115 return renderResource; | |
116 | |
117 return 0; | |
118 } | |
119 | |
120 template<typename Renderer> | |
121 Renderer* getRenderSVGResourceById(TreeScope& treeScope, const AtomicString& id) | |
122 { | |
123 if (RenderSVGResourceContainer* container = getRenderSVGResourceContainerByI
d(treeScope, id)) { | |
124 if (container->resourceType() == Renderer::s_resourceType) | |
125 return static_cast<Renderer*>(container); | |
126 } | |
127 return 0; | |
128 } | |
129 | |
130 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(RenderSVGResourceContainer, isSVGResourceContain
er()); | |
131 | |
132 #define DEFINE_RENDER_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \ | |
133 DEFINE_TYPE_CASTS(thisType, RenderSVGResourceContainer, resource, resource->
resourceType() == typeName, resource.resourceType() == typeName) | |
134 | |
135 } | |
136 | |
137 #endif | |
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