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 // SPDX-License-Identifier: LGPL-2.1-or-later
 //
 // SPDX-FileCopyrightText: 2011 Dennis Nienhüser <nienhueser@kde.org>
 
 // A (gps) tracking example. Shows the current (gps) position on the map
 // using a small ghost image. The visibility of the track can be toggled.
 
 import Qt 4.7
 import org.kde.marble 0.20
 
 Rectangle {
     id: screen
     width: 640; height: 480
 
     // Delivers the current (gps) position
     PositionSource {
         id: gpsd
 
         // Can optionally be used to select a specific position provider
         // plugin of marble. Per default the first one is used.
         // The value is the nameId() of an installed Marble PositionProviderPlugin,
         // e.g. Gpsd
         //source: "Gpsd"
 
         // This starts/stops gps tracking
         active: false
 
         // A small grow/shrink animation of the ghost to indicate position updates
         onPositionChanged: {
             growAnimation.running = true
             if ( map.autoCenter ) {
                 map.center = gpsd.position
             }
         }
     }
 
     // The map widget
     MarbleWidget {
         id: map
         anchors.fill: parent
 
         property bool autoCenter: false
 
         mapThemeId: "earth/openstreetmap/openstreetmap.dgml"
         activeFloatItems: [ "compass", "scalebar", "progress" ]
 
         // The grouped property tracking provides access to tracking related
         // properties
         property Tracking tracking: Tracking {
             // We connect the position source from above with the map
             positionSource: gpsd
             map: map
 
             // Don't show the default Marble position indicator (arrow)
             positionMarkerType: Tracking.Circle
 
             // Initially we don't show the track
             showTrack: false
 
             // We have our own position marker, the image of a ghost.
             // Marble will take care of positioning it correctly. It will
             // be hidden when there is no current position or it is not
             // visible on the screen
             positionMarker: marker
         }
 
         Row {
             x: 10; y: 10
             spacing: 10
 
             Toggle {
                 id: toggleGps
                 width: 140
                 text: gpsd.active ? "(" + Math.round( 100000 * gpsd.position.longitude ) / 100000 + ", " + Math.round( 100000 * gpsd.position.latitude ) / 100000 + ")" : "GPS off"
                 onToggled: gpsd.active = !gpsd.active
             }
 
             Toggle {
                 id: toggleTrack
                 text: "Show Track"
                 onToggled: map.tracking.showTrack = !map.tracking.showTrack
             }
 
             Toggle {
                 id: toggleCenter
                 text: "Auto Center"
                 onToggled: map.autoCenter = !map.autoCenter
             }
         }
 
     }
 
     // A small ghost indicates the current position
     Image {
         id: marker
         width: 60
         fillMode: Image.PreserveAspectFit
         smooth: true
         source: "ghost.svg"
         visible: false
 
         PropertyAnimation on x { duration: 300; easing.type: Easing.OutBounce }
         PropertyAnimation on y { duration: 300; easing.type: Easing.OutBounce }
 
         SequentialAnimation {
             id: growAnimation
             PropertyAnimation {
                 target: marker
                 properties: "scale"
                 to: 1.2
                 duration: 150
             }
             PropertyAnimation {
                 target: marker
                 properties: "scale"
                 to: 1.0
                 duration: 150
             }
         }
     }
 }