MapComponent.qml Example File
places/content/places/MapComponent.qml/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 Digia Plc 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 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.0 import QtPositioning 5.2 import QtLocation 5.0 import QtLocation.examples 5.0 Map { id: map zoomLevel: (maximumZoomLevel - minimumZoomLevel)/2 center { // Brisbane latitude: -27.5 longitude: 153 } gesture.flickDeceleration: 3000 gesture.enabled: true property bool followme: false property variant scaleLengths: [5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000, 500000, 1000000, 2000000] PositionSource{ id: positionSource active: followme onPositionChanged: { map.center = positionSource.position.coordinate } } Slider { id: zoomSlider; minimum: map.minimumZoomLevel; maximum: map.maximumZoomLevel; opacity: 1 visible: parent.visible z: map.z+1 anchors { bottom: parent.bottom; bottomMargin: 15; rightMargin: 10; leftMargin: 90 left: parent.left } width: parent.width - anchors.rightMargin - anchors.leftMargin value: map.zoomLevel onValueChanged: { map.zoomLevel = value } } signal coordinatesCaptured(double latitude, double longitude) Item {//scale id: scale parent: zoomSlider.parent visible: scaleText.text != "0 m" z: map.z opacity: 0.6 anchors { bottom: zoomSlider.top; bottomMargin: 8; left: zoomSlider.left } Image { id: scaleImageLeft source: "../../resources/scale_end.png" anchors.bottom: parent.bottom anchors.left: parent.left } Image { id: scaleImage source: "../../resources/scale.png" anchors.bottom: parent.bottom anchors.left: scaleImageLeft.right } Image { id: scaleImageRight source: "../../resources/scale_end.png" anchors.bottom: parent.bottom anchors.left: scaleImage.right } Text { id: scaleText color: "#004EAE" horizontalAlignment: Text.AlignHCenter anchors.bottom: parent.bottom anchors.left: parent.left anchors.bottomMargin: 3 text: "0 m" font.pixelSize: 14 } Component.onCompleted: { map.calculateScale(); } } Timer { id: scaleTimer interval: 100 running: false repeat: false onTriggered: { map.calculateScale() } } onCenterChanged:{ scaleTimer.restart() if (map.followme) if (map.center != positionSource.position.coordinate) map.followme = false } onZoomLevelChanged:{ scaleTimer.restart() if (map.followme) map.center = positionSource.position.coordinate } onWidthChanged:{ scaleTimer.restart() } onHeightChanged:{ scaleTimer.restart() } Keys.onPressed: { if ((event.key == Qt.Key_Plus) || (event.key == Qt.Key_VolumeUp)) { map.zoomLevel += 1 } else if ((event.key == Qt.Key_Minus) || (event.key == Qt.Key_VolumeDown)){ map.zoomLevel -= 1 } } function calculateScale(){ var coord1, coord2, dist, text, f f = 0 coord1 = map.toCoordinate(Qt.point(0,scale.y)) coord2 = map.toCoordinate(Qt.point(0+scaleImage.sourceSize.width,scale.y)) dist = Math.round(coord1.distanceTo(coord2)) if (dist === 0) { // not visible } else { for (var i = 0; i < scaleLengths.length-1; i++) { if (dist < (scaleLengths[i] + scaleLengths[i+1]) / 2 ) { f = scaleLengths[i] / dist dist = scaleLengths[i] break; } } if (f === 0) { f = dist / scaleLengths[i] dist = scaleLengths[i] } } text = formatDistance(dist) scaleImage.width = (scaleImage.sourceSize.width * f) - 2 * scaleImageLeft.sourceSize.width scaleText.text = text } function roundNumber(number, digits) { var multiple = Math.pow(10, digits); return Math.round(number * multiple) / multiple; } function formatTime(sec){ var value = sec var seconds = value % 60 value /= 60 value = (value > 1) ? Math.round(value) : 0 var minutes = value % 60 value /= 60 value = (value > 1) ? Math.round(value) : 0 var hours = value if (hours > 0) value = hours + "h:"+ minutes + "m" else value = minutes + "min" return value } function formatDistance(meters) { var dist = Math.round(meters) if (dist > 1000 ){ if (dist > 100000){ dist = Math.round(dist / 1000) } else{ dist = Math.round(dist / 100) dist = dist / 10 } dist = dist + " km" } else{ dist = dist + " m" } return dist } }