1 | /* |
2 | * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> |
3 | * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> |
4 | * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Library General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Library General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Library General Public License |
17 | * along with this library; see the file COPYING.LIB. If not, write to |
18 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | * Boston, MA 02110-1301, USA. |
20 | */ |
21 | |
22 | #pragma once |
23 | |
24 | #include "AffineTransform.h" |
25 | #include "ExceptionOr.h" |
26 | |
27 | namespace WebCore { |
28 | |
29 | class FloatRect; |
30 | class SVGElement; |
31 | class SVGMatrix; |
32 | |
33 | class SVGLocatable { |
34 | public: |
35 | virtual ~SVGLocatable() = default; |
36 | |
37 | // 'SVGLocatable' functions |
38 | virtual SVGElement* nearestViewportElement() const = 0; |
39 | virtual SVGElement* farthestViewportElement() const = 0; |
40 | |
41 | enum StyleUpdateStrategy { AllowStyleUpdate, DisallowStyleUpdate }; |
42 | |
43 | virtual FloatRect getBBox(StyleUpdateStrategy) = 0; |
44 | virtual AffineTransform getCTM(StyleUpdateStrategy) = 0; |
45 | virtual AffineTransform getScreenCTM(StyleUpdateStrategy) = 0; |
46 | |
47 | ExceptionOr<Ref<SVGMatrix>> getTransformToElement(SVGElement*, StyleUpdateStrategy = AllowStyleUpdate); |
48 | |
49 | static SVGElement* nearestViewportElement(const SVGElement*); |
50 | static SVGElement* farthestViewportElement(const SVGElement*); |
51 | |
52 | enum CTMScope { |
53 | NearestViewportScope, // Used for getCTM() |
54 | ScreenScope // Used for getScreenCTM() |
55 | }; |
56 | |
57 | protected: |
58 | virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const { return AffineTransform(); } |
59 | |
60 | static FloatRect getBBox(SVGElement*, StyleUpdateStrategy); |
61 | static AffineTransform computeCTM(SVGElement*, CTMScope, StyleUpdateStrategy); |
62 | }; |
63 | |
64 | } // namespace WebCore |
65 | |