1 // Interface for 2D canvas element
3 // Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 #ifndef CANVAS_ELEMENT_HXX_
20 #define CANVAS_ELEMENT_HXX_
22 #include <simgear/props/props.hxx>
23 #include <osg/MatrixTransform>
24 #include <simgear/misc/stdint.hxx> // for uint32_t
35 private SGPropertyChangeListener
38 virtual ~Element() = 0;
39 SGPropertyNode* getPropertyNode();
42 * Called every frame to update internal state
44 * @param dt Frame time in seconds
46 virtual void update(double dt);
48 osg::ref_ptr<osg::MatrixTransform> getMatrixTransform();
68 SGPropertyNode *_node;
69 osg::Drawable *_drawable;
71 uint32_t _attributes_used;
72 uint32_t _attributes_dirty;
74 bool _transform_dirty;
75 osg::ref_ptr<osg::MatrixTransform> _transform;
76 std::vector<TransformType> _transform_types;
78 SGPropertyNode *_bounding_box[4]; ///<! x-min, y-min, x-max, y-max
79 SGPropertyNode *_color[3];
80 SGPropertyNode *_color_fill[3];
82 Element(SGPropertyNode* node, uint32_t attributes_used = 0);
84 virtual void childAdded(SGPropertyNode * child) {}
85 virtual void childRemoved(SGPropertyNode * child){}
86 virtual void childChanged(SGPropertyNode * child){}
88 virtual void colorChanged(const osg::Vec4& color) {}
89 virtual void colorFillChanged(const osg::Vec4& color){}
91 void linkColorNodes( const char* name,
92 SGPropertyNode** nodes,
93 const osg::Vec4& def = osg::Vec4(1,1,0,1) );
96 Element(const Element&);// = delete
98 virtual void childAdded( SGPropertyNode * parent,
99 SGPropertyNode * child );
100 virtual void childRemoved( SGPropertyNode * parent,
101 SGPropertyNode * child );
102 virtual void valueChanged(SGPropertyNode * child);
105 } // namespace canvas
107 #endif /* CANVAS_ELEMENT_HXX_ */