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/rendering/svg/RenderSVGResource.h"
25
26 namespace WebCore {
27
28 class RenderLayer;
29
30 class RenderSVGResourceContainer : public RenderSVGHiddenContainer,
31 public RenderSVGResource {
32 public:
33 explicit RenderSVGResourceContainer(SVGElement*);
34 virtual ~RenderSVGResourceContainer();
35
36 virtual void layout();
37 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE FINAL;
38
isSVGResourceContainer()39 virtual bool isSVGResourceContainer() const OVERRIDE FINAL { return true; }
40
41 static bool shouldTransformOnTextPainting(RenderObject*, AffineTransform&);
42 static AffineTransform transformOnNonScalingStroke(RenderObject*, const AffineTransform& resourceTransform);
43
44 void idChanged();
45 void addClientRenderLayer(Node*);
46 void addClientRenderLayer(RenderLayer*);
47 void removeClientRenderLayer(RenderLayer*);
48
49 void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = 0);
50
51 protected:
52 // When adding modes, make sure we don't overflow m_invalidationMask below.
53 enum InvalidationMode {
54 LayoutAndBoundariesInvalidation = 1 << 0,
55 BoundariesInvalidation = 1 << 1,
56 RepaintInvalidation = 1 << 2,
57 ParentOnlyInvalidation = 1 << 3
58 };
59
60 // Used from the invalidateClient/invalidateClients methods from classes, inheriting from us.
61 void markAllClientsForInvalidation(InvalidationMode);
62 void markAllClientLayersForInvalidation();
63 void markClientForInvalidation(RenderObject*, InvalidationMode);
64
clearInvalidationMask()65 void clearInvalidationMask() { m_invalidationMask = 0; }
66
67 bool m_isInLayout;
68
69 private:
70 friend class SVGResourcesCache;
71 void addClient(RenderObject*);
72 void removeClient(RenderObject*);
73
74 virtual void willBeDestroyed() OVERRIDE FINAL;
75 void registerResource();
76
77 AtomicString m_id;
78 // Track global (markAllClientsForInvalidation) invals to avoid redundant crawls.
79 unsigned m_invalidationMask : 8;
80
81 bool m_registered : 1;
82 bool m_isInvalidating : 1;
83 // 22 padding bits available
84
85 HashSet<RenderObject*> m_clients;
86 HashSet<RenderLayer*> m_clientLayers;
87 };
88
getRenderSVGResourceContainerById(Document & document,const AtomicString & id)89 inline RenderSVGResourceContainer* getRenderSVGResourceContainerById(Document& document, const AtomicString& id)
90 {
91 if (id.isEmpty())
92 return 0;
93
94 if (RenderSVGResourceContainer* renderResource = document.accessSVGExtensions()->resourceById(id))
95 return renderResource;
96
97 return 0;
98 }
99
100 template<typename Renderer>
getRenderSVGResourceById(Document & document,const AtomicString & id)101 Renderer* getRenderSVGResourceById(Document& document, const AtomicString& id)
102 {
103 if (RenderSVGResourceContainer* container = getRenderSVGResourceContainerById(document, id))
104 return container->cast<Renderer>();
105
106 return 0;
107 }
108
109 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGResourceContainer, isSVGResourceContainer());
110
111 }
112
113 #endif
114