1 /*
2 Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 2004, 2005, 2007 Rob Buis <buis@kde.org>
4 2009 Google, Inc.
5 Copyright (C) 2009 Apple Inc. All rights reserved.
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public License
18 aint with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
21 */
22
23 #ifndef RenderSVGViewportContainer_h
24 #define RenderSVGViewportContainer_h
25
26 #if ENABLE(SVG)
27 #include "RenderSVGContainer.h"
28
29 namespace WebCore {
30
31 // This is used for non-root <svg> elements and <marker> elements, neither of which are SVGTransformable
32 // thus we inherit from RenderSVGContainer instead of RenderSVGTransformableContainer
33 class RenderSVGViewportContainer : public RenderSVGContainer {
34 public:
35 RenderSVGViewportContainer(SVGStyledElement*);
36
37 // Calculates marker boundaries, mapped to the target element's coordinate space
38 FloatRect markerBoundaries(const AffineTransform& markerTransformation) const;
39
40 // Generates a transformation matrix usable to render marker content. Handles scaling the marker content
41 // acording to SVGs markerUnits="strokeWidth" concept, when a strokeWidth value != -1 is passed in.
42 AffineTransform markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth = -1) const;
43
44 private:
isSVGContainer()45 virtual bool isSVGContainer() const { return true; }
renderName()46 virtual const char* renderName() const { return "RenderSVGViewportContainer"; }
47
48 AffineTransform viewportTransform() const;
49 virtual const AffineTransform& localToParentTransform() const;
50
51 virtual void calcViewport();
52
53 virtual void applyViewportClip(PaintInfo&);
54 virtual bool pointIsInsideViewportClip(const FloatPoint& pointInParent);
55
56 FloatRect m_viewport;
57 mutable AffineTransform m_localToParentTransform;
58 };
59
toRenderSVGViewportContainer(RenderObject * object)60 inline RenderSVGViewportContainer* toRenderSVGViewportContainer(RenderObject* object)
61 {
62 ASSERT(!object || !strcmp(object->renderName(), "RenderSVGViewportContainer"));
63 return static_cast<RenderSVGViewportContainer*>(object);
64 }
65
66 // This will catch anyone doing an unnecessary cast.
67 void toRenderSVGViewportContainer(const RenderSVGViewportContainer*);
68
69 } // namespace WebCore
70
71 #endif // ENABLE(SVG)
72 #endif // RenderSVGViewportContainer_h
73