mapwidget-mobile: do not animate the first selection

centerOnLocationHard() is added in MapPage.qml so that
on `firstRun` the map is hard panned to the desired location
without animation.

This affects the selection of a new "Dive details" -> "Map it" or
when opening a GPS location in the map.

The idea behind this change is to avoid starting the map animation
from an arbitrary location such as [0,0] or London. Also, to not
start the map zoomed out completely and then zoom in on a selected
dive.

For this change to work, add the helper getCoordinatesForUUID()
to qmlmapwidgethelper.cpp/.h and use it to obtain the
QGeoCoordinates for a dive site UUID.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>

mobile-widgets/qml/MapPage.qml

@@ -12,6 +12,7 @@ Kirigami.Page {
 	topPadding: 0
 	rightPadding: 0
 	bottomPadding: 0
+	property bool firstRun: true
 
 	MapWidget {
 		id: mapWidget
@@ -40,10 +41,27 @@ Kirigami.Page {
 			console.warn("main.qml: centerOnDiveSiteUUI(): uuid is undefined!")
 			return
 		}
+		// on firstRun, hard pan/center the map to the desired location so that
+		// we don't start at an arbitrary location such as [0,0] or London.
+		if (firstRun) {
+			var coord = mapWidget.mapHelper.getCoordinatesForUUID(uuid)
+			centerOnLocationHard(coord.latitude, coord.longitude)
+			firstRun = false
+		} // continue here as centerOnDiveSiteUUID() also does marker selection.
 		mapWidget.mapHelper.centerOnDiveSiteUUID(uuid)
 	}
 
 	function centerOnLocation(lat, lon) {
+		if (firstRun) {
+			centerOnLocationHard(lat, lon)
+			firstRun = false
+			return // no need to animate via centerOnCoordinate().
+		}
 		mapWidget.map.centerOnCoordinate(QtPositioning.coordinate(lat, lon))
 	}
+
+	function centerOnLocationHard(lat, lon) {
+		mapWidget.map.zoomLevel = mapWidget.map.defaultZoomIn
+		mapWidget.map.center = QtPositioning.coordinate(lat, lon)
+	}
 }