canvas_click_filter.h

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#ifndef MAPVIZ_PLUGINS_CANVAS_CLICK_FILTER_H
#define MAPVIZ_PLUGINS_CANVAS_CLICK_FILTER_H

#include <QObject>
#include <QPoint>

namespace mapviz_plugins
{
  class CanvasClickFilter : public QObject
  {
    Q_OBJECT

  public:
    CanvasClickFilter();

    void setMaxClickTime(qint64 max_ms);
    void setMaxClickMovement(qreal max_distance);

  Q_SIGNALS:
    void pointClicked(const QPointF&);

  protected:
    bool eventFilter(QObject *object, QEvent* event);

  private:
    bool is_mouse_down_;
    QPointF mouse_down_pos_;
    qint64 mouse_down_time_;

    qint64 max_ms_;
    qreal max_distance_;
  };
}

#endif //MAPVIZ_PLUGINS_CANVAS_CLICK_FILTER_H