Support for center map to specified location

src/FlightMap/FlightMap.qml

@@ -11,6 +11,7 @@ import QtQuick          2.3
 import QtQuick.Controls 1.2
 import QtLocation       5.3
 import QtPositioning    5.3
+import QtQuick.Dialogs  1.2
 
 import QGroundControl                       1.0
 import QGroundControl.FactSystem            1.0
@@ -40,6 +41,7 @@ Map {
     property bool   firstGCSPositionReceived:       false   ///< true: first gcs position update was responded to
     property bool   firstVehiclePositionReceived:   false   ///< true: first vehicle position update was responded to
     property bool   planView:                       false   ///< true: map being using for Plan view, items should be draggable
+    property var    qgcView
 
     readonly property real  maxZoomLevel: 20
 
@@ -62,6 +64,20 @@ Map {
         }
     }
 
+    function centerToSpecifiedLocation() {
+        qgcView.showDialog(specifyMapPositionDialog, qsTr("Specify Position"), qgcView.showDialogDefaultWidth, StandardButton.Cancel)
+
+    }
+
+    Component {
+        id: specifyMapPositionDialog
+
+        EditPositionDialog {
+            coordinate:             center
+            onCoordinateChanged:    center = coordinate
+        }
+    }
+
     ExclusiveGroup { id: mapTypeGroup }
 
     // Update ground station position

src/FlightMap/Widgets/CenterMapDropButton.qml

@@ -209,6 +209,17 @@ DropButton {
                 }
             }
 
+
+            QGCButton {
+                text:               qsTr("Specified Location")
+                Layout.fillWidth:   true
+
+                onClicked: {
+                    dropButton.hideDropDown()
+                    map.centerToSpecifiedLocation()
+                }
+            }
+
             QGCButton {
                 text:               qsTr("Vehicle")
                 Layout.fillWidth:   true

src/FlightMap/Widgets/CenterMapDropPanel.qml

@@ -63,6 +63,17 @@ ColumnLayout {
     }
 
     QGCButton {
+        text:               qsTr("Vehicle")
+        Layout.fillWidth:   true
+        enabled:            _activeVehicle && _activeVehicle.coordinate.isValid
+
+        onClicked: {
+            dropPanel.hide()
+            map.center = activeVehicle.coordinate
+        }
+    }
+
+    QGCButton {
         text:               qsTr("Current Location")
         Layout.fillWidth:   true
         enabled:            map.gcsPosition.isValid
@@ -74,13 +85,12 @@ ColumnLayout {
     }
 
     QGCButton {
-        text:               qsTr("Vehicle")
+        text:               qsTr("Specified Location")
         Layout.fillWidth:   true
-        enabled:            _activeVehicle && _activeVehicle.coordinate.isValid
 
         onClicked: {
             dropPanel.hide()
-            map.center = activeVehicle.coordinate
+            map.centerToSpecifiedLocation()
         }
     }
 } // Column

src/PlanView/PlanView.qml

@@ -411,6 +411,7 @@ QGCView {
             allowGCSLocationCenter:     true
             allowVehicleLocationCenter: true
             planView:                   true
+            qgcView:                    _qgcView
 
             // This is the center rectangle of the map which is not obscured by tools
             property rect centerViewport: Qt.rect(_leftToolWidth, _toolbarHeight, editorMap.width - _leftToolWidth - _rightPanelWidth, editorMap.height - _statusHeight - _toolbarHeight)

src/QtLocationPlugin/QMLControl/OfflineMap.qml

@@ -364,6 +364,7 @@ QGCView {
             allowVehicleLocationCenter: false
             gesture.flickDeceleration:  3000
             mapName:                    "OfflineMap"
+            qgcView:                    offlineMapView
 
             property bool isSatelliteMap: activeMapType.name.indexOf("Satellite") > -1 || activeMapType.name.indexOf("Hybrid") > -1