Merge pull request #7375 from patrickelectric/joystick_virtual

Improve virtual joystick functionality 

src/FlightDisplay/FlightDisplayView.qml

@@ -550,8 +550,11 @@ QGCView {
             active:                     (_virtualJoystick ? _virtualJoystick.value : false) && !(_activeVehicle ? _activeVehicle.highLatencyLink : false)
 
             property bool useLightColors: isBackgroundDark
+            // The default behaviour is not centralized throttle
+            property bool centralizeThrottle: _virtualJoystickCentralized ? _virtualJoystickCentralized.value : false
 
             property Fact _virtualJoystick: QGroundControl.settingsManager.appSettings.virtualJoystick
+            property Fact _virtualJoystickCentralized: QGroundControl.settingsManager.appSettings.virtualJoystickCentralized
         }
 
         ToolStrip {

src/FlightDisplay/FlightDisplayViewWidgets.qml

@@ -86,6 +86,10 @@ Item {
         target:         QGroundControl.settingsManager.appSettings.virtualJoystick
         onValueChanged: _setInstrumentWidget()
     }
+    Connections {
+        target:         QGroundControl.settingsManager.appSettings.virtualJoystickCentralized
+        onValueChanged: _setInstrumentWidget()
+    }
 
     Connections {
         target:         QGroundControl.settingsManager.appSettings.showLargeCompass

src/FlightDisplay/VirtualJoystick.qml

@@ -18,7 +18,7 @@ import QGroundControl.Vehicle       1.0
 
 Item {
     //property bool useLightColors - Must be passed in from loaded
-
+    //property bool centralizeThrottle - Must be passed in from loaded
     Timer {
         interval:   40  // 25Hz, same as real joystick rate
         running:    QGroundControl.settingsManager.appSettings.virtualJoystick.value && _activeVehicle
@@ -39,8 +39,8 @@ Item {
         width:                  parent.height
         height:                 parent.height
         yAxisThrottle:          true
+        yAxisThrottleCentered:  centralizeThrottle
         lightColors:            useLightColors
-        throttle:               true
     }
 
     JoystickThumbPad {

src/QmlControls/JoystickThumbPad.qml

@@ -11,26 +11,38 @@ Item {
     property real   xAxis:          0                   ///< Value range [-1,1], negative values left stick, positive values right stick
     property real   yAxis:          0                   ///< Value range [-1,1], negative values up stick, positive values down stick
     property bool   yAxisThrottle:  false               ///< true: yAxis used for throttle, range [1,0], positive value are stick up
+    property bool   yAxisThrottleCentered: false        ///< false: center yAxis in throttle for reverser and forward
     property real   xPositionDelta: 0                   ///< Amount to move the control on x axis
     property real   yPositionDelta: 0                   ///< Amount to move the control on y axis
-    property bool   throttle:       false
 
     property real   _centerXY:              width / 2
     property bool   _processTouchPoints:    false
-    property bool   _stickCenteredOnce:     false
     property real   stickPositionX:         _centerXY
-    property real   stickPositionY:         yAxisThrottle ? height : _centerXY
+    property real   stickPositionY:         yAxisThrottleCentered ? _centerXY : height
 
     QGCMapPalette { id: mapPal }
 
-    onStickPositionXChanged: {
+    onWidthChanged: calculateXAxis()
+    onStickPositionXChanged: calculateXAxis()
+    onHeightChanged: calculateYAxis()
+    onStickPositionYChanged: calculateYAxis()
+
+    function calculateXAxis()
+    {
+        if(!visible()) {
+            return;
+        }
         var xAxisTemp = stickPositionX / width
         xAxisTemp *= 2.0
         xAxisTemp -= 1.0
         xAxis = xAxisTemp
     }
 
-    onStickPositionYChanged: {
+    function calculateYAxis()
+    {
+        if(!visible()) {
+            return;
+        }
         var yAxisTemp = stickPositionY / height
         yAxisTemp *= 2.0
         yAxisTemp -= 1.0
@@ -50,7 +62,7 @@ Item {
 
         // Center sticks
         stickPositionX = _centerXY
-        if (!yAxisThrottle) {
+        if (yAxisThrottleCentered) {
             stickPositionY = _centerXY
         }
     }
@@ -86,7 +98,7 @@ Item {
 
     QGCColoredImage {
         color:                      lightColors ? "white" : "black"
-        visible:                    throttle
+        visible:                    yAxisThrottle
         height:                     ScreenTools.defaultFontPixelHeight
         width:                      height
         sourceSize.height:          height
@@ -100,7 +112,7 @@ Item {
 
     QGCColoredImage {
         color:                      lightColors ? "white" : "black"
-        visible:                    throttle
+        visible:                    yAxisThrottle
         height:                     ScreenTools.defaultFontPixelHeight
         width:                      height
         sourceSize.height:          height
@@ -114,7 +126,7 @@ Item {
 
     QGCColoredImage {
         color:                      lightColors ? "white" : "black"
-        visible:                    throttle
+        visible:                    yAxisThrottle
         height:                     ScreenTools.defaultFontPixelHeight
         width:                      height
         sourceSize.height:          height
@@ -128,7 +140,7 @@ Item {
 
     QGCColoredImage {
         color:                      lightColors ? "white" : "black"
-        visible:                    throttle
+        visible:                    yAxisThrottle
         height:                     ScreenTools.defaultFontPixelHeight
         width:                      height
         sourceSize.height:          height

src/Settings/App.SettingsGroup.json

@@ -103,6 +103,13 @@
     "type":             "bool",
     "defaultValue":     false
 },
+{
+    "name":             "virtualJoystickCentralized",
+    "shortDescription": "Set virtual joystick to be centralize throttle (spring-loaded).",
+    "longDescription":  "If this option is enabled the virtual joystick throttle stick will be centralized.",
+    "type":             "bool",
+    "defaultValue":     false
+},
 {
     "name":             "gstDebugLevel",
     "shortDescription": "Video streaming debug",

src/Settings/AppSettings.cc

@@ -78,6 +78,7 @@ DECLARE_SETTINGSFACT(AppSettings, telemetrySave)
 DECLARE_SETTINGSFACT(AppSettings, telemetrySaveNotArmed)
 DECLARE_SETTINGSFACT(AppSettings, audioMuted)
 DECLARE_SETTINGSFACT(AppSettings, virtualJoystick)
+DECLARE_SETTINGSFACT(AppSettings, virtualJoystickCentralized)
 DECLARE_SETTINGSFACT(AppSettings, appFontPointSize)
 DECLARE_SETTINGSFACT(AppSettings, showLargeCompass)
 DECLARE_SETTINGSFACT(AppSettings, savePath)

src/Settings/AppSettings.h

@@ -33,6 +33,7 @@ public:
     DEFINE_SETTINGFACT(telemetrySaveNotArmed)
     DEFINE_SETTINGFACT(audioMuted)
     DEFINE_SETTINGFACT(virtualJoystick)
+    DEFINE_SETTINGFACT(virtualJoystickCentralized)
     DEFINE_SETTINGFACT(appFontPointSize)
     DEFINE_SETTINGFACT(indoorPalette)
     DEFINE_SETTINGFACT(showLargeCompass)

src/ui/preferences/GeneralSettings.qml

@@ -455,6 +455,17 @@ QGCView {
                                 property Fact _virtualJoystick: QGroundControl.settingsManager.appSettings.virtualJoystick
                             }
 
+                            FactCheckBox {
+                                text:       qsTr("Auto-Center throttle")
+                                visible:    _virtualJoystickCentralized.visible && (
+                                        QGroundControl.multiVehicleManager.activeVehicle.sub || QGroundControl.multiVehicleManager.activeVehicle.rover
+                                    )
+                                fact:       _virtualJoystickCentralized
+                                Layout.leftMargin: _margins
+
+                                property Fact _virtualJoystickCentralized: QGroundControl.settingsManager.appSettings.virtualJoystickCentralized
+                            }
+
                             GridLayout {
                                 columns: 2