Show stock image as background when Waiting For Video (#10604)

Add background to make it easier to read


Update

qgcresources.qrc

@@ -31,6 +31,7 @@
         <file alias="LockClosed.svg">resources/LockClosed.svg</file>
         <file alias="LockOpen.svg">resources/LockOpen.svg</file>
         <file alias="notile.png">resources/notile.png</file>
+        <file alias="NoVideoBackground.jpg">resources/NoVideoBackground.jpg</file>
         <file alias="Pause.svg">resources/Pause.svg</file>
         <file alias="pause-mission.svg">resources/pause-mission.svg</file>
         <file alias="pencil.svg">resources/pencil.svg</file>

src/FlightDisplay/FlightDisplayViewVideo.qml

@@ -38,19 +38,32 @@ Item {
 
     property double _thermalHeightFactor: 0.85 //-- TODO
 
-    Rectangle {
-        id:             noVideo
-        anchors.fill:   parent
-        color:          Qt.rgba(0,0,0,0.75)
-        visible:        !(QGroundControl.videoManager.decoding)
-        QGCLabel {
-            text:               QGroundControl.settingsManager.videoSettings.streamEnabled.rawValue ? qsTr("WAITING FOR VIDEO") : qsTr("VIDEO DISABLED")
-            font.family:        ScreenTools.demiboldFontFamily
-            color:              "white"
-            font.pointSize:     useSmallFont ? ScreenTools.smallFontPointSize : ScreenTools.largeFontPointSize
-            anchors.centerIn:   parent
+        Image {
+            id:             noVideo
+            anchors.fill:   parent
+            source:         "/res/NoVideoBackground.jpg"
+            fillMode:       Image.PreserveAspectCrop
+            visible:        !(QGroundControl.videoManager.decoding)
+
+            Rectangle {
+                anchors.centerIn:   parent
+                width:              noVideoLabel.contentWidth + ScreenTools.defaultFontPixelHeight
+                height:             noVideoLabel.contentHeight + ScreenTools.defaultFontPixelHeight
+                radius:             ScreenTools.defaultFontPixelWidth / 2
+                color:              "black"
+                opacity:            0.5
+            }
+
+            QGCLabel {
+                id:                 noVideoLabel
+                text:               QGroundControl.settingsManager.videoSettings.streamEnabled.rawValue ? qsTr("WAITING FOR VIDEO") : qsTr("VIDEO DISABLED")
+                font.family:        ScreenTools.demiboldFontFamily
+                color:              "white"
+                font.pointSize:     useSmallFont ? ScreenTools.smallFontPointSize : ScreenTools.largeFontPointSize
+                anchors.centerIn:   parent
+            }
         }
-    }
+
     Rectangle {
         anchors.fill:   parent
         color:          "black"