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179 lines
6.2 KiB
QML
179 lines
6.2 KiB
QML
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// Copyright (C) 2023 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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import QtQuick
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import QtLocation as QL
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import QtPositioning as QP
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import Qt.labs.animation
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/*!
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\qmltype MapView
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\inqmlmodule QtLocation
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\brief An interactive map viewer component.
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MapView wraps a Map and adds the typical interactive features:
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changing the zoom level, panning and tilting the map.
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The implementation is a QML assembly of smaller building blocks that are
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available separately. In case you want to make changes in your own version
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of this component, you can copy the QML, which is installed into the
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\c qml/QtLocation module directory, and modify it as needed.
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\sa Map
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*/
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Item {
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/*!
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\qmlproperty Map MapView::map
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This property provides access to the underlying Map instance.
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*/
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property alias map: map
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/*!
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\qmlproperty real minimumZoomLevel
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The minimum zoom level according to the size of the view.
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\sa Map::minimumZoomLevel
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*/
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property real minimumZoomLevel: map.minimumZoomLevel
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/*!
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\qmlproperty real maximumZoomLevel
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The maximum valid zoom level for the map.
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\sa Map::maximumZoomLevel
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*/
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property real maximumZoomLevel: map.maximumZoomLevel
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// --------------------------------
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// implementation
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id: root
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Component.onCompleted: map.resetPinchMinMax()
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QL.Map {
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id: map
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width: parent.width
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height: parent.height
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tilt: tiltHandler.persistentTranslation.y / -5
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property bool pinchAdjustingZoom: false
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BoundaryRule on zoomLevel {
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id: br
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minimum: map.minimumZoomLevel
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maximum: map.maximumZoomLevel
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}
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onZoomLevelChanged: {
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br.returnToBounds();
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if (!pinchAdjustingZoom) resetPinchMinMax()
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}
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function resetPinchMinMax() {
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pinch.persistentScale = 1
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pinch.scaleAxis.minimum = Math.pow(2, root.minimumZoomLevel - map.zoomLevel + 1)
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pinch.scaleAxis.maximum = Math.pow(2, root.maximumZoomLevel - map.zoomLevel - 1)
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}
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PinchHandler {
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id: pinch
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target: null
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property real rawBearing: 0
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property QP.geoCoordinate startCentroid
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onActiveChanged: if (active) {
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flickAnimation.stop()
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pinch.startCentroid = map.toCoordinate(pinch.centroid.position, false)
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} else {
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flickAnimation.restart(centroid.velocity)
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map.resetPinchMinMax()
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}
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onScaleChanged: (delta) => {
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map.pinchAdjustingZoom = true
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map.zoomLevel += Math.log2(delta)
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map.alignCoordinateToPoint(pinch.startCentroid, pinch.centroid.position)
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map.pinchAdjustingZoom = false
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}
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onRotationChanged: (delta) => {
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pinch.rawBearing -= delta
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// snap to 0° if we're close enough
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map.bearing = (Math.abs(pinch.rawBearing) < 5) ? 0 : pinch.rawBearing
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map.alignCoordinateToPoint(pinch.startCentroid, pinch.centroid.position)
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}
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grabPermissions: PointerHandler.TakeOverForbidden
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}
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WheelHandler {
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id: wheel
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// workaround for QTBUG-87646 / QTBUG-112394 / QTBUG-112432:
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// Magic Mouse pretends to be a trackpad but doesn't work with PinchHandler
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// and we don't yet distinguish mice and trackpads on Wayland either
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acceptedDevices: Qt.platform.pluginName === "cocoa" || Qt.platform.pluginName === "wayland"
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? PointerDevice.Mouse | PointerDevice.TouchPad
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: PointerDevice.Mouse
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onWheel: (event) => {
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const loc = map.toCoordinate(wheel.point.position)
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switch (event.modifiers) {
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case Qt.NoModifier:
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// jonb - Changed to make more like Qt5
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//map.zoomLevel += event.angleDelta.y / 120
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map.zoomLevel += event.angleDelta.y / 1000
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break
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case Qt.ShiftModifier:
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map.bearing += event.angleDelta.y / 15
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break
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case Qt.ControlModifier:
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map.tilt += event.angleDelta.y / 15
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break
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}
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map.alignCoordinateToPoint(loc, wheel.point.position)
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}
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}
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DragHandler {
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id: drag
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signal flickStarted // for autotests only
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signal flickEnded
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target: null
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onTranslationChanged: (delta) => map.pan(-delta.x, -delta.y)
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onActiveChanged: if (active) {
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flickAnimation.stop()
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} else {
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flickAnimation.restart(centroid.velocity)
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}
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}
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property vector3d animDest
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onAnimDestChanged: if (flickAnimation.running) {
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const delta = Qt.vector2d(animDest.x - flickAnimation.animDestLast.x, animDest.y - flickAnimation.animDestLast.y)
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map.pan(-delta.x, -delta.y)
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flickAnimation.animDestLast = animDest
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}
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Vector3dAnimation on animDest {
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id: flickAnimation
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property vector3d animDestLast
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from: Qt.vector3d(0, 0, 0)
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duration: 500
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easing.type: Easing.OutQuad
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onStarted: drag.flickStarted()
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onStopped: drag.flickEnded()
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function restart(vel) {
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stop()
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map.animDest = Qt.vector3d(0, 0, 0)
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animDestLast = Qt.vector3d(0, 0, 0)
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to = Qt.vector3d(vel.x / duration * 100, vel.y / duration * 100, 0)
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start()
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}
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}
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DragHandler {
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id: tiltHandler
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minimumPointCount: 2
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maximumPointCount: 2
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target: null
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xAxis.enabled: false
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grabPermissions: PointerHandler.TakeOverForbidden
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onActiveChanged: if (active) flickAnimation.stop()
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}
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}
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}
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