Disables zooming by double click and context menu on marble.

Marble is a weird piece of Qt software, it seems that it wasn't
thought of being a library when first written. Most of its features
are not achieved by subclassing && overriding one of Qt default methods,
instead we need to eventFilter for almost everything ( which is a pain,
and a bit error prone - see our combo box delegate *puke*. )

This one's ready,  only one thing though - if we want to implement
our own context menu, we will need to use the eventFilter, and not
the contextMenuEvent.

Fixes #291

[Dirk Hohndel: this does not disable the context menu for me...]

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

2 files changed, 21 insertions, 2 deletions

diff --git a/qt-ui/globe.cpp b/qt-ui/globe.cpp
index 846eabb1d..0dde6019c 100644
--- a/qt-ui/globe.cpp
+++ b/qt-ui/globe.cpp
@@ -38,6 +38,7 @@ GlobeGPS::GlobeGPS(QWidget* parent) : MarbleWidget(parent), loadedDives(0)
 			foundGoogleMap = true;
 	if (!foundGoogleMap) {
 		subsurfaceDataPath = getSubsurfaceDataPath("marbledata");
+		qDebug() << subsurfaceDataPath;
 		if (subsurfaceDataPath != "")
 			MarbleDirs::setMarbleDataPath(subsurfaceDataPath);
 	}
@@ -67,6 +68,25 @@ GlobeGPS::GlobeGPS(QWidget* parent) : MarbleWidget(parent), loadedDives(0)
 	fixZoomTimer = new QTimer();
 	connect(fixZoomTimer, SIGNAL(timeout()), this, SLOT(fixZoom()));
 	fixZoomTimer->setSingleShot(true);
+	installEventFilter(this);
+}
+
+bool GlobeGPS::eventFilter(QObject *obj, QEvent *ev)
+{
+	// This disables Zooming when a double click occours on the scene.
+	if (ev->type() == QEvent::MouseButtonDblClick)
+		return true;
+	// This disables the Marble's Context Menu
+	// we need to move this to our 'contextMenuEvent'
+	// if we plan to do a different one in the future.
+	if (ev->type() == QEvent::ContextMenu)
+		return true;
+	if (ev->type() == QEvent::MouseButtonPress){
+		QMouseEvent *e = static_cast<QMouseEvent*>(ev);
+		if(e->button() == Qt::RightButton)
+			return true;
+	}
+    return QObject::eventFilter(obj,ev );
 }
 
 void GlobeGPS::mouseClicked(qreal lon, qreal lat, GeoDataCoordinates::Unit unit)
diff --git a/qt-ui/globe.h b/qt-ui/globe.h
index c44e9b591..b9cd398e3 100644
--- a/qt-ui/globe.h
+++ b/qt-ui/globe.h
@@ -20,11 +20,10 @@ public:
 	void repopulateLabels();
 	void centerOn(struct dive* dive);
 	void diveEditMode();
-
+	bool eventFilter(QObject*, QEvent*);
 protected:
 	/* reimp */ void resizeEvent(QResizeEvent *event);
 	/* reimp */ void mousePressEvent(QMouseEvent* event);
-
 private:
 	void prepareForGetDiveCoordinates(struct dive* dive);
 	GeoDataDocument *loadedDives;