Enable a context menu to remove dive handlers.

This commit enables a context menu to remove dive handlers,
because it was hard to find that ctrl+click selected it,
then a delete button press removed it. it's better now. :)

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/diveplanner.cpp

@@ -673,6 +673,7 @@ void DivePlannerGraphics::mousePressEvent(QMouseEvent* event)
 	}
 
 	QPointF mappedPos = mapToScene(event->pos());
+	if (event->button() == Qt::LeftButton){
 		Q_FOREACH(QGraphicsItem *item, scene()->items(mappedPos, Qt::IntersectsItemBoundingRect, Qt::AscendingOrder, transform())) {
 			if (DiveHandler *h = qgraphicsitem_cast<DiveHandler*>(item)) {
 				activeDraggedHandler = h;
@@ -680,6 +681,7 @@ void DivePlannerGraphics::mousePressEvent(QMouseEvent* event)
 				originalHandlerPos = activeDraggedHandler->pos();
 			}
 		}
+	}
 	QGraphicsView::mousePressEvent(event);
 }
 
@@ -703,8 +705,25 @@ DiveHandler::DiveHandler(): QGraphicsEllipseItem()
 	setZValue(2);
 }
 
+void DiveHandler::contextMenuEvent(QGraphicsSceneContextMenuEvent* event)
+{
+	QMenu m;
+	m.addAction(QObject::tr("Remove this Point"), this, SLOT(selfRemove()));
+	m.exec(event->screenPos());
+}
+
+void DiveHandler::selfRemove()
+{
+	setSelected(true);
+	DivePlannerGraphics *view = qobject_cast<DivePlannerGraphics*>(scene()->views().first());
+	view->keyDeleteAction();
+}
+
 void DiveHandler::mousePressEvent(QGraphicsSceneMouseEvent* event)
 {
+	if (event->button() != Qt::LeftButton)
+		return;
+
 	if (event->modifiers().testFlag(Qt::ControlModifier)) {
 		setSelected(true);
 	}

qt-ui/diveplanner.h

@@ -95,11 +95,15 @@ private:
 	QGraphicsSimpleTextItem *text;
 };
 
-class DiveHandler : public QGraphicsEllipseItem{
+class DiveHandler : public QObject, public QGraphicsEllipseItem{
+Q_OBJECT
 public:
 	DiveHandler();
 protected:
 	void mousePressEvent(QGraphicsSceneMouseEvent* event);
+	void contextMenuEvent(QGraphicsSceneContextMenuEvent* event);
+public slots:
+	void selfRemove();
 };
 
 class Ruler : public QGraphicsLineItem{
@@ -118,7 +122,6 @@ public:
 	qreal posAtValue(qreal value);
 	void setColor(const QColor& color);
 	void setTextColor(const QColor& color);
-
 private:
 	Qt::Orientation orientation;
 	QList<QGraphicsLineItem*> ticks;
@@ -210,6 +213,8 @@ private:
 
 	int minMinutes; // this holds the minimum duration of the dive.
 	int dpMaxTime; // this is the time of the dive calculated by the deco.
+
+	friend class DiveHandler;
 };
 
 #include "ui_diveplanner.h"