mirror of https://github.com/CGAL/cgal
82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
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#ifndef CGAL_QT_TRIANGULATION_REMOVE_VERTEX_H
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#define CGAL_QT_TRIANGULATION_REMOVE_VERTEX_H
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#include <CGAL/Qt/GraphicsViewInput.h>
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#include <QGraphicsSceneMouseEvent>
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#include <QEvent>
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#include <list>
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#include <CGAL/Qt/Converter.h>
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namespace CGAL {
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namespace Qt {
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template <typename DT>
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class TriangulationRemoveVertex : public GraphicsViewInput
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{
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public:
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typedef typename DT::Face_handle Face_handle;
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typedef typename DT::Vertex_handle Vertex_handle;
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typedef typename DT::Point Point;
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TriangulationRemoveVertex(DT * dt_, QObject* parent);
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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bool eventFilter(QObject *obj, QEvent *event);
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DT * dt;
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};
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template <typename T>
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TriangulationRemoveVertex<T>::TriangulationRemoveVertex(T * dt_,
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QObject* parent)
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: GraphicsViewInput(parent), dt(dt_)
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{}
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template <typename T>
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void
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TriangulationRemoveVertex<T>::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if((event->modifiers() & ::Qt::ShiftModifier)
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&& (! (event->modifiers() & ::Qt::ControlModifier))){
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if(dt->number_of_vertices() == 0){
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dt->clear();
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}else {
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Converter<typename T::Geom_traits> convert;
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typename T::Vertex_handle selected_vertex = dt->nearest_vertex(convert(event->scenePos()));
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dt->remove(selected_vertex);
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}
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Q_EMIT( modelChanged());
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}
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}
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template <typename T>
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bool
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TriangulationRemoveVertex<T>::eventFilter(QObject *obj, QEvent *event)
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{
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if (event->type() == QEvent::GraphicsSceneMousePress) {
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QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
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mousePressEvent(mouseEvent);
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return false;
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} else{
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// standard event processing
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return QObject::eventFilter(obj, event);
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}
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_TRIANGULATION_REMOVE_VERTEX_H
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