1/*
2 * Copyright (C) Research In Motion Limited 2009-2010. 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 RenderSVGResource_h
21#define RenderSVGResource_h
22
23#if ENABLE(SVG)
24#include "RenderStyleConstants.h"
25#include "SVGDocumentExtensions.h"
26
27namespace WebCore {
28
29enum RenderSVGResourceType {
30    MaskerResourceType,
31    MarkerResourceType,
32    PatternResourceType,
33    LinearGradientResourceType,
34    RadialGradientResourceType,
35    SolidColorResourceType,
36    FilterResourceType,
37    ClipperResourceType
38};
39
40enum RenderSVGResourceMode {
41    ApplyToDefaultMode = 1 << 0, // used for all resources except gradient/pattern
42    ApplyToFillMode    = 1 << 1,
43    ApplyToStrokeMode  = 1 << 2,
44    ApplyToTextMode    = 1 << 3 // used in combination with ApplyTo{Fill|Stroke}Mode
45};
46
47class Color;
48class FloatRect;
49class GraphicsContext;
50class Path;
51class RenderObject;
52class RenderStyle;
53class RenderSVGResourceSolidColor;
54
55class RenderSVGResource {
56public:
57    RenderSVGResource() { }
58    virtual ~RenderSVGResource() { }
59
60    virtual void removeAllClientsFromCache(bool markForInvalidation = true) = 0;
61    virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true) = 0;
62
63    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode) = 0;
64    virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short, const Path*) { }
65    virtual FloatRect resourceBoundingBox(RenderObject*) = 0;
66
67    virtual RenderSVGResourceType resourceType() const = 0;
68
69    template<class Renderer>
70    Renderer* cast()
71    {
72        if (Renderer::s_resourceType == resourceType())
73            return static_cast<Renderer*>(this);
74
75        return 0;
76    }
77
78    // Helper utilities used in the render tree to access resources used for painting shapes/text (gradients & patterns & solid colors only)
79    static RenderSVGResource* fillPaintingResource(RenderObject*, const RenderStyle*, Color& fallbackColor);
80    static RenderSVGResource* strokePaintingResource(RenderObject*, const RenderStyle*, Color& fallbackColor);
81    static RenderSVGResourceSolidColor* sharedSolidPaintingResource();
82
83    static void markForLayoutAndParentResourceInvalidation(RenderObject*, bool needsLayout = true);
84};
85
86}
87
88#endif
89#endif
90