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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 #ifndef SVGLocatable_h | |
23 #define SVGLocatable_h | |
24 | |
25 #include "core/svg/SVGRect.h" | |
26 #include "platform/transforms/AffineTransform.h" | |
27 | |
28 namespace WebCore { | |
29 | |
30 class ExceptionState; | |
31 class SVGElement; | |
32 | |
33 class SVGLocatable { | |
34 public: | |
35 virtual ~SVGLocatable() { } | |
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 AffineTransform getCTM(StyleUpdateStrategy) = 0; | |
44 virtual AffineTransform getScreenCTM(StyleUpdateStrategy) = 0; | |
45 AffineTransform getTransformToElement(SVGElement*, ExceptionState&, StyleUpd
ateStrategy = AllowStyleUpdate); | |
46 | |
47 static SVGElement* nearestViewportElement(const SVGElement*); | |
48 static SVGElement* farthestViewportElement(const SVGElement*); | |
49 | |
50 enum CTMScope { | |
51 NearestViewportScope, // Used for getCTM() | |
52 ScreenScope // Used for getScreenCTM() | |
53 }; | |
54 | |
55 protected: | |
56 virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope
) const { return AffineTransform(); } | |
57 | |
58 static AffineTransform computeCTM(SVGElement*, CTMScope, StyleUpdateStrategy
); | |
59 }; | |
60 | |
61 } // namespace WebCore | |
62 | |
63 #endif // SVGLocatable_h | |
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