127 lines
3.8 KiB
C++
127 lines
3.8 KiB
C++
///@file
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/// A group of 2D Canvas elements
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//
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// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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#ifndef CANVAS_GROUP_HXX_
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#define CANVAS_GROUP_HXX_
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#include "CanvasElement.hxx"
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#include <list>
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namespace simgear
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{
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namespace canvas
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{
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typedef std::map<std::string, ElementFactory> ElementFactories;
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class Group:
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public Element
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{
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public:
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static const std::string TYPE_NAME;
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static void staticInit();
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typedef std::list< std::pair< const SGPropertyNode*,
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ElementPtr
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>
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> ChildList;
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Group( const CanvasWeakPtr& canvas,
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const SGPropertyNode_ptr& node,
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const Style& parent_style = Style(),
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ElementWeakPtr parent = 0 );
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virtual ~Group();
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ElementPtr createChild( const std::string& type,
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const std::string& id = "" );
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ElementPtr getChild(const SGPropertyNode* node);
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ElementPtr getChild(const std::string& id);
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ElementPtr getOrCreateChild( const std::string& type,
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const std::string& id );
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template<class T>
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SGSharedPtr<T> createChild(const std::string& id = "")
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{
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return dynamic_cast<T*>( createChild(T::TYPE_NAME, id).get() );
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}
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template<class T>
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SGSharedPtr<T> getChild(const SGPropertyNode* node)
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{
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return dynamic_cast<T*>( getChild(node).get() );
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}
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template<class T>
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SGSharedPtr<T> getChild(const std::string& id)
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{
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return dynamic_cast<T*>( getChild(id).get() );
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}
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template<class T>
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SGSharedPtr<T> getOrCreateChild(const std::string& id)
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{
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return dynamic_cast<T*>( getOrCreateChild(T::TYPE_NAME, id).get() );
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}
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/**
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* Get first child with given id (breadth-first search)
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*
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* @param id Id (value if property node 'id') of element
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*/
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ElementPtr getElementById(const std::string& id);
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void clearEventListener() override;
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bool traverse(EventVisitor& visitor) override;
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bool setStyle( const SGPropertyNode* child,
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const StyleInfo* style_info = 0 ) override;
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osg::BoundingBox
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getTransformedBounds(const osg::Matrix& m) const override;
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protected:
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static ElementFactories _child_factories;
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/**
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* Overload in derived classes to allow for more/other types of elements
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* to be managed.
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*/
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virtual ElementFactory getChildFactory(const std::string& type) const;
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void updateImpl(double dt) override;
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void childAdded(SGPropertyNode * child) override;
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void childRemoved(SGPropertyNode * child) override;
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void childChanged(SGPropertyNode * child) override;
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void handleZIndexChanged(ElementPtr child, int z_index = 0);
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ElementPtr getChildByIndex(size_t index) const;
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ElementPtr findChild( const SGPropertyNode* node,
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const std::string& id ) const;
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};
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} // namespace canvas
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} // namespace simgear
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#endif /* CANVAS_GROUP_HXX_ */
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