1/*
2 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef RenderSVGResourcePattern_h
22#define RenderSVGResourcePattern_h
23
24#if ENABLE(SVG)
25#include "AffineTransform.h"
26#include "FloatRect.h"
27#include "ImageBuffer.h"
28#include "Pattern.h"
29#include "PatternAttributes.h"
30#include "RenderSVGResourceContainer.h"
31#include "SVGPatternElement.h"
32#include "SVGUnitTypes.h"
33
34#include <wtf/HashMap.h>
35#include <wtf/OwnPtr.h>
36
37namespace WebCore {
38
39struct PatternData {
40    WTF_MAKE_FAST_ALLOCATED;
41public:
42    RefPtr<Pattern> pattern;
43    AffineTransform transform;
44};
45
46class RenderSVGResourcePattern : public RenderSVGResourceContainer {
47public:
48    RenderSVGResourcePattern(SVGPatternElement*);
49
50    virtual const char* renderName() const { return "RenderSVGResourcePattern"; }
51
52    virtual void removeAllClientsFromCache(bool markForInvalidation = true);
53    virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
54
55    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);
56    virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short resourceMode, const Path*, const RenderSVGShape*);
57    virtual FloatRect resourceBoundingBox(RenderObject*) { return FloatRect(); }
58
59    virtual RenderSVGResourceType resourceType() const { return s_resourceType; }
60    static RenderSVGResourceType s_resourceType;
61
62private:
63    bool buildTileImageTransform(RenderObject*, const PatternAttributes&, const SVGPatternElement*, FloatRect& patternBoundaries, AffineTransform& tileImageTransform) const;
64
65    PassOwnPtr<ImageBuffer> createTileImage(const PatternAttributes&, const FloatRect& tileBoundaries,
66                                            const FloatRect& absoluteTileBoundaries, const AffineTransform& tileImageTransform,
67                                            FloatRect& clampedAbsoluteTileBoundaries) const;
68
69    PatternData* buildPattern(RenderObject*, unsigned short resourceMode);
70
71    bool m_shouldCollectPatternAttributes : 1;
72    PatternAttributes m_attributes;
73    HashMap<RenderObject*, OwnPtr<PatternData> > m_patternMap;
74};
75
76}
77
78#endif
79#endif
80