mirror of https://github.com/CGAL/cgal
119 lines
2.2 KiB
C++
119 lines
2.2 KiB
C++
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#ifndef CGAL_QT_VORONOI_GRAPHICS_ITEM_H
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#define CGAL_QT_VORONOI_GRAPHICS_ITEM_H
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#include <CGAL/Qt/GraphicsItem.h>
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#include <CGAL/Qt/PainterOstream.h>
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QPainter>
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#include <QStyleOption>
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#include <CGAL/intersection_2.h>
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class QGraphicsSceneMouseEvent;
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namespace CGAL {
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namespace Qt {
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template <typename DT>
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class VoronoiGraphicsItem : public GraphicsItem
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{
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public:
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VoronoiGraphicsItem(DT * dt_);
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QRectF
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boundingRect() const;
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void
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paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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void
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modelChanged();
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const QPen& edgesPen() const
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{
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return edges_pen;
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}
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void setEdgesPen(const QPen& pen)
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{
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edges_pen = pen;
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}
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private:
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DT * dt;
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QPen edges_pen;
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};
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template <typename DT>
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VoronoiGraphicsItem<DT>::VoronoiGraphicsItem(DT * dt_)
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: dt(dt_)
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{
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setZValue(3);
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}
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template <typename DT>
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QRectF
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VoronoiGraphicsItem<DT>::boundingRect() const
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{
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QRectF rect;
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QList<QGraphicsView *> views = scene()->views();
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for (int i = 0; i < views.size(); ++i) {
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QGraphicsView *view = views.at(i);
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QRect vprect = view->viewport()->rect();
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QPoint tl = vprect.topLeft();
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QPoint br = vprect.bottomRight();
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QPointF tlf = view->mapToScene(tl);
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QPointF brf = view->mapToScene(br);
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rect |= QRectF(tlf, brf);
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}
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return rect;
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}
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template <typename DT>
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void
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VoronoiGraphicsItem<DT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *w)
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{
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QRectF rect = option->exposedRect;
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PainterOstream<typename DT::Geom_traits> pos(painter, rect);
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painter->setPen(edgesPen());
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for(typename DT::Finite_edges_iterator eit = dt->finite_edges_begin();
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eit != dt->finite_edges_end();
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eit++){
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CGAL::Object o = dt->dual(eit);
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typename DT::Segment s;
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typename DT::Geom_traits::Ray_2 r;
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typename DT::Geom_traits::Line_2 l;
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if(CGAL::assign(s,o)){
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pos << s;
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} else if(CGAL::assign(r,o)) {
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pos << r;
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}else if(CGAL::assign(l,o)) {
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pos << l;
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}
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}
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}
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template <typename T>
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void
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VoronoiGraphicsItem<T>::modelChanged()
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{
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update();
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_VORONOI_GRAPHICS_ITEM_H
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