2 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
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.
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.
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.
20 #ifndef RenderSVGResource_h
21 #define RenderSVGResource_h
25 enum RenderSVGResourceType {
29 LinearGradientResourceType,
30 RadialGradientResourceType,
31 SolidColorResourceType,
36 // If this enum changes change the unsigned bitfields using it.
37 enum RenderSVGResourceMode {
38 ApplyToDefaultMode = 1 << 0, // used for all resources except gradient/pattern
39 ApplyToFillMode = 1 << 1,
40 ApplyToStrokeMode = 1 << 2,
41 ApplyToTextMode = 1 << 3 // used in combination with ApplyTo{Fill|Stroke}Mode
43 typedef unsigned RenderSVGResourceModeFlags;
45 class GraphicsContext;
48 class RenderSVGResourceSolidColor;
50 class RenderSVGResource {
52 RenderSVGResource() { }
53 virtual ~RenderSVGResource() { }
55 virtual void removeAllClientsFromCache(bool markForInvalidation = true) = 0;
56 virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true) = 0;
58 virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode) = 0;
59 virtual void postApplyResource(RenderObject*, GraphicsContext*&) { }
61 virtual RenderSVGResourceType resourceType() const = 0;
63 template<class Renderer>
66 if (Renderer::s_resourceType == resourceType())
67 return static_cast<Renderer*>(this);
72 // Helper utilities used in the render tree to access resources used for painting shapes/text (gradients & patterns & solid colors only)
73 // If hasFallback gets set to true, the sharedSolidPaintingResource is set to a fallback color.
74 static RenderSVGResource* requestPaintingResource(RenderSVGResourceMode, RenderObject*, const RenderStyle*, bool& hasFallback);
75 static RenderSVGResourceSolidColor* sharedSolidPaintingResource();
77 static void markForLayoutAndParentResourceInvalidation(RenderObject*, bool needsLayout = true);
80 #define DEFINE_RENDER_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \
81 DEFINE_TYPE_CASTS(thisType, RenderSVGResource, resource, resource->resourceType() == typeName, resource.resourceType() == typeName)