MiniMap.qml Example File

mapviewer/map/MiniMap.qml
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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) } } } }