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#pragma once
21
22#include "ImageBuffer.h"
23#include "RenderSVGResourceContainer.h"
24#include "SVGMaskElement.h"
25#include "SVGUnitTypes.h"
26
27#include <wtf/HashMap.h>
28
29namespace WebCore {
30
31class GraphicsContext;
32
33struct MaskerData {
34 std::unique_ptr<ImageBuffer> maskImage;
35};
36
37class RenderSVGResourceMasker final : public RenderSVGResourceContainer {
38 WTF_MAKE_ISO_ALLOCATED(RenderSVGResourceMasker);
39public:
40 RenderSVGResourceMasker(SVGMaskElement&, RenderStyle&&);
41 virtual ~RenderSVGResourceMasker();
42
43 SVGMaskElement& maskElement() const { return downcast<SVGMaskElement>(RenderSVGResourceContainer::element()); }
44
45 void removeAllClientsFromCache(bool markForInvalidation = true) override;
46 void removeClientFromCache(RenderElement&, bool markForInvalidation = true) override;
47 bool applyResource(RenderElement&, const RenderStyle&, GraphicsContext*&, OptionSet<RenderSVGResourceMode>) override;
48 FloatRect resourceBoundingBox(const RenderObject&) override;
49
50 SVGUnitTypes::SVGUnitType maskUnits() const { return maskElement().maskUnits(); }
51 SVGUnitTypes::SVGUnitType maskContentUnits() const { return maskElement().maskContentUnits(); }
52
53 RenderSVGResourceType resourceType() const override { return MaskerResourceType; }
54
55private:
56 void element() const = delete;
57
58 const char* renderName() const override { return "RenderSVGResourceMasker"; }
59
60 bool drawContentIntoMaskImage(MaskerData*, ColorSpace, RenderObject*);
61 void calculateMaskContentRepaintRect();
62
63 FloatRect m_maskContentBoundaries;
64 HashMap<RenderObject*, std::unique_ptr<MaskerData>> m_masker;
65};
66
67}
68
69SPECIALIZE_TYPE_TRAITS_RENDER_SVG_RESOURCE(RenderSVGResourceMasker, MaskerResourceType)
70