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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 2.4
import QtQuick.Controls 1.3
import QGroundControl 1.0
import QGroundControl.Controls 1.0
import QGroundControl.ScreenTools 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 _scaleLengths: [5, 10, 25, 50, 100, 150, 250, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000, 500000, 1000000, 2000000]
property bool _isSatelliteMap: mapControl.activeMapType.name.indexOf(qsTr("Street")) == -1 ///< Scale control being displayed over satellite map
property var _color: _isSatelliteMap ? "white" : "black"
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
}
function calculateScale() {
var scaleLineWidth = 100
var coord1, coord2, dist, text, f
f = 0
coord1 = mapControl.toCoordinate(Qt.point(0, scale.y))
coord2 = mapControl.toCoordinate(Qt.point(scaleLineWidth, 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)
centerLine.width = (scaleLineWidth * f) - (2 * leftEnd.width)
scaleText.text = text
}
Connections {
target: mapControl
onWidthChanged: scaleTimer.restart()
onHeightChanged: scaleTimer.restart()
onZoomLevelChanged: scaleTimer.restart()
}
Timer {
id: scaleTimer
interval: 100
running: false
repeat: false
onTriggered: calculateScale()
}
QGCLabel {
id: scaleText
color: _color
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();
}
}
}