Qt Mobility Reference Documentation

mapviewer.qml Example File

declarative-location/mapviewer/mapviewer.qml
 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the Qt Mobility Components.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 ****************************************************************************/

 import Qt 4.7
 import QtMobility.location 1.1

 Item {
     width: 500
     height: 500

     focus : true

     Map {
         id: map
         plugin : Plugin {
                             name : "nokia"
                         }
         size.width: parent.width
         size.height: parent.height
         zoomLevel: 7
         center: Coordinate {
                     latitude: -27
                     longitude: 179
                 }

         MapCircle{
             center : Coordinate {
                                 latitude : -27
                                 longitude : 179
                                 }
             radius : 1000.0
         }
         MapCircle{
             radius : 1000.0
             color : "green"
         }
         MapCircle{
             center : Coordinate {
                                 latitude : -27.2
                                 longitude : 179
                                 }
             color : "red"
         }
     }

     MouseArea {

         anchors.fill : parent

         property bool mouseDown : false
         property int lastX : -1
         property int lastY : -1

         hoverEnabled : true

         onPressed : {
             mouseDown = true
             lastX = mouse.x
             lastY = mouse.y
         }
         onReleased : {
             mouseDown = false
             lastX = -1
             lastY = -1
         }
         onPositionChanged: {
             if (mouseDown) {
                 var dx = mouse.x - lastX
                 var dy = mouse.y - lastY
                 map.pan(-dx, -dy)
                 lastX = mouse.x
                 lastY = mouse.y
             }
         }
         onDoubleClicked: {
             map.center = map.toCoordinate(Qt.point(mouse.x, mouse.y))
             map.zoomLevel += 1
         }
     }

     Keys.onPressed: {
         if (event.key == Qt.Key_Plus) {
             map.zoomLevel += 1
         } else if (event.key == Qt.Key_Minus) {
             map.zoomLevel -= 1
         } else if (event.key == Qt.Key_T) {
             if (map.mapType == Map.StreetMap) {
                 map.mapType = Map.SatelliteMapDay
             } else if (map.mapType == Map.SatelliteMapDay) {
                 map.mapType = Map.StreetMap
             }
         }
     }
 }
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