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https://github.com/tumic0/GPXSee.git
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37 lines
876 B
C
37 lines
876 B
C
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#ifndef GRAPHICSSCENE_H
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#define GRAPHICSSCENE_H
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#include <QGraphicsScene>
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#include <QGraphicsItem>
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#include <QGraphicsSceneHelpEvent>
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#include <QWidget>
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#include "popup.h"
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class GraphicsItem : public QGraphicsItem
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{
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public:
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GraphicsItem(QGraphicsItem *parent = 0) : QGraphicsItem(parent) {}
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virtual QString info() const = 0;
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int type() const {return QGraphicsItem::UserType + 1;}
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};
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class GraphicsScene : public QGraphicsScene
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{
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public:
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GraphicsScene(QObject *parent = 0) : QGraphicsScene(parent) {}
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protected:
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void helpEvent(QGraphicsSceneHelpEvent *event)
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{
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QGraphicsItem *item = itemAt(event->scenePos(), QTransform());
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if (item && item->type() == QGraphicsItem::UserType + 1) {
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GraphicsItem *mi = static_cast<GraphicsItem*>(item);
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Popup::show(event->screenPos(), mi->info(),
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static_cast<QWidget*>(parent()));
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}
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}
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};
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#endif // GRAPHICSSCENE_H
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