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/****************************************************************************
*
* (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
import QtQuick 2.3
import QtQuick.Controls 1.2
import QGroundControl 1.0
import QGroundControl.Controls 1.0
import QGroundControl.ScreenTools 1.0
import QGroundControl.SettingsManager 1.0
/// Map scale control
Item {
id: scale
width: rightEnd.x + rightEnd.width
height: rightEnd.y + rightEnd.height
property var mapControl ///< Map control for which this scale control is being used
property variant _scaleLengthsMeters: [5, 10, 25, 50, 100, 150, 250, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000, 500000, 1000000, 2000000]
property variant _scaleLengthsFeet: [10, 25, 50, 100, 250, 500, 1000, 2000, 3000, 4000, 5280, 5280*2, 5280*5, 5280*10, 5280*25, 5280*50, 5280*100, 5280*250, 5280*500, 5280*1000]
property var _color: mapControl.isSatelliteMap ? "white" : "black"
var dist = Math.round(meters)
if (dist > 1000 ){
if (dist > 100000){
dist = Math.round(dist / 1000)
dist = Math.round(dist / 100)
dist = dist / 10
}
dist = dist + qsTr(" km")
} else {
dist = dist + qsTr(" m")
return dist
}
function formatDistanceFeet(feet) {
var dist = Math.round(feet)
if (dist >= 5280) {
dist = Math.round(dist / 5280)
dist = dist
if (dist == 1) {
dist += qsTr(" mile")
} else {
dist += qsTr(" miles")
}
} else {
dist = dist + qsTr(" ft")
function calculateMetersRatio(scaleLineMeters, scaleLinePixelLength) {
var scaleLineRatio = 0
if (scaleLineMeters === 0) {
// not visible
} else {
for (var i = 0; i < _scaleLengthsMeters.length - 1; i++) {
if (scaleLineMeters < (_scaleLengthsMeters[i] + _scaleLengthsMeters[i+1]) / 2 ) {
scaleLineRatio = _scaleLengthsMeters[i] / scaleLineMeters
scaleLineMeters = _scaleLengthsMeters[i]
break;
}
}
if (scaleLineRatio === 0) {
scaleLineRatio = scaleLineMeters / _scaleLengthsMeters[i]
scaleLineMeters = _scaleLengthsMeters[i]
}
}
var text = formatDistanceMeters(scaleLineMeters)
centerLine.width = (scaleLinePixelLength * scaleLineRatio) - (2 * leftEnd.width)
scaleText.text = text
}
function calculateFeetRatio(scaleLineMeters, scaleLinePixelLength) {
var scaleLineRatio = 0
var scaleLineFeet = scaleLineMeters * 3.2808399
if (scaleLineFeet === 0) {
for (var i = 0; i < _scaleLengthsFeet.length - 1; i++) {
if (scaleLineFeet < (_scaleLengthsFeet[i] + _scaleLengthsFeet[i+1]) / 2 ) {
scaleLineRatio = _scaleLengthsFeet[i] / scaleLineFeet
scaleLineFeet = _scaleLengthsFeet[i]
if (scaleLineRatio === 0) {
scaleLineRatio = scaleLineFeet / _scaleLengthsFeet[i]
scaleLineFeet = _scaleLengthsFeet[i]
var text = formatDistanceFeet(scaleLineFeet)
centerLine.width = (scaleLinePixelLength * scaleLineRatio) - (2 * leftEnd.width)
function calculateScale() {
var scaleLinePixelLength = 100
var leftCoord = mapControl.toCoordinate(Qt.point(0, scale.y), false /* clipToViewPort */)
var rightCoord = mapControl.toCoordinate(Qt.point(scaleLinePixelLength, scale.y), false /* clipToViewPort */)
var scaleLineMeters = Math.round(leftCoord.distanceTo(rightCoord))
if (QGroundControl.settingsManager.unitsSettings.distanceUnits.value === UnitsSettings.DistanceUnitsFeet) {
calculateFeetRatio(scaleLineMeters, scaleLinePixelLength)
} else {
calculateMetersRatio(scaleLineMeters, scaleLinePixelLength)
}
}
Connections {
target: mapControl
onWidthChanged: scaleTimer.restart()
onHeightChanged: scaleTimer.restart()
onZoomLevelChanged: scaleTimer.restart()
}
Timer {
id: scaleTimer
interval: 100
running: false
repeat: false
onTriggered: calculateScale()
}
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font.family: ScreenTools.demiboldFontFamily
anchors.left: parent.left
anchors.right: parent.right
horizontalAlignment: Text.AlignRight
text: "0 m"
}
Rectangle {
id: leftEnd
anchors.top: scaleText.bottom
anchors.left: parent.left
width: 2
height: ScreenTools.defaultFontPixelHeight
color: _color
}
Rectangle {
id: centerLine
anchors.bottomMargin: 2
anchors.bottom: leftEnd.bottom
anchors.left: leftEnd.right
height: 2
color: _color
}
Rectangle {
id: rightEnd
anchors.top: leftEnd.top
anchors.left: centerLine.right
width: 2
height: ScreenTools.defaultFontPixelHeight
color: _color
}
Component.onCompleted: {
if (scale.visible) {
calculateScale();
}
}
}