MiniMap.qml Example File

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  import QtQuick 2.5
  import QtPositioning 5.3
  import QtLocation 5.6

  Rectangle{

      function clamp(num, min, max)
      {
        return num < min ? min : num > max ? max : num;
      }

      function minimumScaleFactor()
      {
          var hscalefactor = (400.0 / Math.max(Math.min(map.width, 1000), 400)) * 0.5
          var vscalefactor = (400.0 / Math.max(Math.min(map.height, 1000), 400)) * 0.5
          return Math.min(hscalefactor,vscalefactor)
      }

      function avgScaleFactor()
      {
          var hscalefactor = (400.0 / Math.max(Math.min(map.width, 1000), 400)) * 0.5
          var vscalefactor = (400.0 / Math.max(Math.min(map.height, 1000), 400)) * 0.5
          return (hscalefactor+vscalefactor) * 0.5
      }

      id: miniMapRect
      width: Math.floor(map.width * avgScaleFactor()) + 2
      height: Math.floor(map.height * avgScaleFactor()) + 2
      anchors.right: (parent) ? parent.right : undefined
      anchors.rightMargin: 10
      anchors.top: (parent) ? parent.top : undefined
      anchors.topMargin: 10
      color: "#242424"
      Map {
          id: miniMap
          anchors.top: parent.top
          anchors.topMargin: 1
          anchors.left: parent.left
          anchors.leftMargin: 1
          width: Math.floor(map.width * avgScaleFactor())
          height: Math.floor(map.height * avgScaleFactor())
          zoomLevel: clamp(map.zoomLevel - 4.5, 2.0, 5.0) //(map.zoomLevel > minimumZoomLevel + 3) ? minimumZoomLevel + 3 : 1.5
          center: map.center
          plugin: map.plugin
          gesture.enabled: false
          copyrightsVisible: false
          property double mapZoomLevel : map.zoomLevel

          // cannot use property bindings on map.visibleRegion in MapRectangle because it's non-NOTIFYable
          onCenterChanged: miniMapRectangle.updateCoordinates()
          onMapZoomLevelChanged: miniMapRectangle.updateCoordinates()
          onWidthChanged: miniMapRectangle.updateCoordinates()
          onHeightChanged: miniMapRectangle.updateCoordinates()

          MapRectangle {
              id: miniMapRectangle
              color: "#44ff0000"
              border.width: 1
              border.color: "red"

              function getMapVisibleRegion()
              {
                  return QtPositioning.shapeToRectangle(map.visibleRegion)
              }

              function updateCoordinates()
              {
                  topLeft.latitude =  getMapVisibleRegion().topLeft.latitude
                  topLeft.longitude=  getMapVisibleRegion().topLeft.longitude
                  bottomRight.latitude =  getMapVisibleRegion().bottomRight.latitude
                  bottomRight.longitude=  getMapVisibleRegion().bottomRight.longitude
                  console.log("TopLeft: " + topLeft)
                  console.log("BotRigh: " + bottomRight)
              }
          }
      }
  }