add ImageView::hovered

libs/widgets/image_view.h

@@ -55,10 +55,12 @@ public slots:
 
 signals:
 	void clicked(QPointF, Qt::MouseButtons);
+	void hovered(QPointF, Qt::MouseButtons);
 
 private:
 	void mouseDoubleClickEvent(QMouseEvent *) override;
 	void mousePressEvent(QMouseEvent * e) override;
+	void mouseMoveEvent(QMouseEvent * e) override;
 	void wheelEvent(QWheelEvent * e) override;
 	bool eventFilter(QObject * o, QEvent * e) override;
 	void adjustView();