1 // A group of 2D canvas elements
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.
25 //----------------------------------------------------------------------------
26 Group::Group(SGPropertyNode_ptr node):
32 //----------------------------------------------------------------------------
38 //----------------------------------------------------------------------------
39 void Group::update(double dt)
41 for( size_t i = 0; i < _children.size(); ++i )
44 _children[i]->update(dt);
50 //----------------------------------------------------------------------------
51 void Group::childAdded(SGPropertyNode* child)
53 boost::shared_ptr<Element> element;
55 if( child->getNameString() == "text" )
56 element.reset( new Text(child) );
57 else if( child->getNameString() == "group" )
58 element.reset( new Group(child) );
64 "canvas::Group unknown child: " << child->getDisplayName()
70 // Add to osg scene graph...
71 _transform->addChild( element->getMatrixTransform() );
73 // ...and build up canvas hierarchy
74 size_t index = child->getIndex();
76 if( index >= _children.size() )
77 _children.resize(index + 1);
79 _children[index] = element;
82 //----------------------------------------------------------------------------
83 void Group::childRemoved(SGPropertyNode* child)
85 if( child->getNameString() == "text"
86 || child->getNameString() == "group" )
88 size_t index = child->getIndex();
90 if( index >= _children.size() )
95 "can't removed unknown child " << child->getDisplayName()
99 boost::shared_ptr<Element>& element = _children[index];
101 _transform->removeChild(element->getMatrixTransform());
107 } // namespace canvas