1/*
2 Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
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 GraphicsLayerTransform_h
21#define GraphicsLayerTransform_h
22
23#include "FloatPoint.h"
24#include "FloatPoint3D.h"
25#include "FloatSize.h"
26#include "TransformationMatrix.h"
27
28namespace WebCore {
29
30class GraphicsLayerTransform {
31public:
32 WEBCORE_EXPORT GraphicsLayerTransform();
33 void setPosition(const FloatPoint&);
34 void setSize(const FloatSize&);
35 void setAnchorPoint(const FloatPoint3D&);
36 void setFlattening(bool);
37 void setLocalTransform(const TransformationMatrix&);
38 void setChildrenTransform(const TransformationMatrix&);
39 const TransformationMatrix& combined() const;
40 const TransformationMatrix& combinedForChildren() const;
41
42 void combineTransforms(const TransformationMatrix& parentTransform);
43
44private:
45 void combineTransformsForChildren() const;
46
47 FloatPoint3D m_anchorPoint;
48 FloatPoint m_position;
49 FloatSize m_size;
50 bool m_flattening;
51 bool m_dirty;
52 mutable bool m_childrenDirty;
53
54 TransformationMatrix m_local;
55 TransformationMatrix m_children;
56 TransformationMatrix m_combined;
57 mutable TransformationMatrix m_combinedForChildren;
58};
59
60}
61
62#endif // GraphicsLayerTransform_h
63