Allow custom build to hide Absolute Altitude

src/PlanView/SimpleItemEditor.qml

@@ -4,6 +4,7 @@ import QtQuick.Controls.Styles  1.4
 import QtQuick.Dialogs          1.2
 import QtQuick.Layouts          1.2
 
+import QGroundControl               1.0
 import QGroundControl.ScreenTools   1.0
 import QGroundControl.Vehicle       1.0
 import QGroundControl.Controls      1.0
@@ -28,7 +29,7 @@ Rectangle {
 
     ExclusiveGroup {
         id: altRadios
-        onCurrentChanged: missionItem.altitudeMode = current.value
+        onCurrentChanged: missionItem.altitudeMode = current.altModeValue
     }
 
     Column {
@@ -99,10 +100,33 @@ Rectangle {
                 }
 
                 RowLayout {
-                    QGCRadioButton { text: qsTr("Rel"); exclusiveGroup: altRadios; checked: missionItem.altitudeMode === value; readonly property int value: _altModeRelative }
-                    QGCRadioButton { text: qsTr("Abs"); exclusiveGroup: altRadios; checked: missionItem.altitudeMode === value; readonly property int value: _altModeAbsolute }
-                    QGCRadioButton { text: qsTr("AGL"); exclusiveGroup: altRadios; checked: missionItem.altitudeMode === value; readonly property int value: _altModeAboveTerrain }
-                    QGCRadioButton { text: qsTr("TerrF"); exclusiveGroup: altRadios; checked: missionItem.altitudeMode === value; visible: missionItem.supportsTerrainFrame; readonly property int value: _altModeTerrainFrame }
+                    QGCRadioButton {
+                        text:           qsTr("Rel")
+                        exclusiveGroup: altRadios
+                        checked:        missionItem.altitudeMode === altModeValue
+                        readonly property int altModeValue: _altModeRelative
+
+					}
+                    QGCRadioButton {
+                        text:           qsTr("Abs")
+                        exclusiveGroup: altRadios
+                        checked:        missionItem.altitudeMode === altModeValue
+                        visible:        QGroundControl.corePlugin.options.showMissionAbsoluteAltitude || missionItem.altitudeMode === altModeValue
+                        readonly property int altModeValue: _altModeAbsolute
+                    }
+                    QGCRadioButton {
+                        text:           qsTr("AGL")
+                        exclusiveGroup: altRadios
+                        checked:        missionItem.altitudeMode === altModeValue
+                        readonly property int altModeValue: _altModeAboveTerrain
+                    }
+                    QGCRadioButton {
+                        text:           qsTr("TerrF")
+                        exclusiveGroup: altRadios
+                        checked:        missionItem.altitudeMode === altModeValue
+                        visible:        missionItem.supportsTerrainFrame || missionItem.altitudeMode === altModeValue
+                        readonly property int altModeValue: _altModeTerrainFrame
+                            }
                 }
 
                 FactValueSlider {

src/api/QGCOptions.h

@@ -47,6 +47,7 @@ public:
     Q_PROPERTY(bool                     useMobileFileDialog             READ useMobileFileDialog            CONSTANT)
     Q_PROPERTY(bool                     showMissionStatus               READ showMissionStatus              CONSTANT)
     Q_PROPERTY(bool                     guidedActionsRequireRCRSSI      READ guidedActionsRequireRCRSSI     CONSTANT)
+    Q_PROPERTY(bool                     showMissionAbsoluteAltitude     READ showMissionAbsoluteAltitude    NOTIFY showMissionAbsoluteAltitudeChanged)
 
     /// Should QGC hide its settings menu and colapse it into one single menu (Settings and Vehicle Setup)?
     /// @return true if QGC should consolidate both menus into one.
@@ -86,6 +87,7 @@ public:
     virtual bool    guidedActionsRequireRCRSSI      () const { return false; }  ///< true: Guided actions will be disabled is there is no RC RSSI
     virtual bool    showOfflineMapExport            () const { return true; }
     virtual bool    showOfflineMapImport            () const { return true; }
+    virtual bool    showMissionAbsoluteAltitude     () const { return true; }
 
 #if defined(__mobile__)
     virtual bool    useMobileFileDialog             () const { return true;}
@@ -111,6 +113,7 @@ signals:
     void multiVehicleEnabledChanged             (bool multiVehicleEnabled);
     void showOfflineMapExportChanged            ();
     void showOfflineMapImportChanged            ();
+    void showMissionAbsoluteAltitudeChanged     ();
 
 private:
     CustomInstrumentWidget* _defaultInstrumentWidget;