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 THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_MASKER_H_
21 #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_MASKER_H_
22 
23 #include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_container.h"
24 #include "third_party/blink/renderer/core/svg/svg_unit_types.h"
25 #include "third_party/blink/renderer/platform/geometry/float_rect.h"
26 #include "third_party/skia/include/core/SkRefCnt.h"
27 
28 namespace blink {
29 
30 class AffineTransform;
31 class GraphicsContext;
32 class SVGMaskElement;
33 
34 class LayoutSVGResourceMasker final : public LayoutSVGResourceContainer {
35  public:
36   explicit LayoutSVGResourceMasker(SVGMaskElement*);
37   ~LayoutSVGResourceMasker() override;
38 
GetName()39   const char* GetName() const override { return "LayoutSVGResourceMasker"; }
40 
41   void RemoveAllClientsFromCache() override;
42 
43   FloatRect ResourceBoundingBox(const FloatRect& reference_box);
44 
45   SVGUnitTypes::SVGUnitType MaskUnits() const;
46   SVGUnitTypes::SVGUnitType MaskContentUnits() const;
47 
48   static const LayoutSVGResourceType kResourceType = kMaskerResourceType;
ResourceType()49   LayoutSVGResourceType ResourceType() const override { return kResourceType; }
50 
51   sk_sp<const PaintRecord> CreatePaintRecord(AffineTransform&,
52                                              const FloatRect&,
53                                              GraphicsContext&);
54 
55  private:
56   void CalculateMaskContentVisualRect();
57 
58   sk_sp<const PaintRecord> cached_paint_record_;
59   FloatRect mask_content_boundaries_;
60 };
61 
62 DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceMasker,
63                                       kMaskerResourceType);
64 
65 }  // namespace blink
66 
67 #endif
68