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	If multiple dives are selected, highlight all corresponding sites. For that, replace the MapLocationModel::m_selectedDs pointer by a QVector<>. Fill the vector in MapLocationModel::reload() and add a isSelected() member function. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
		
			
				
	
	
		
			376 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			QML
		
	
	
	
	
	
			
		
		
	
	
			376 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			QML
		
	
	
	
	
	
// SPDX-License-Identifier: GPL-2.0
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import QtQuick 2.5
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import QtLocation 5.3
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import QtPositioning 5.3
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import org.subsurfacedivelog.mobile 1.0
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Item {
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	id: rootItem
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	property alias mapHelper: mapHelper
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	property alias map: map
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	signal selectedDivesChanged(var list)
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	MapWidgetHelper {
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		id: mapHelper
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		map: map
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		editMode: false
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		onSelectedDivesChanged: rootItem.selectedDivesChanged(list)
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		onEditModeChanged: editMessage.isVisible = editMode === true ? 1 : 0
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		onCoordinatesChanged: {}
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		Component.onCompleted: {
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			map.plugin = Qt.createQmlObject(pluginObject, rootItem)
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			map.mapType = { "STREET": map.supportedMapTypes[0], "SATELLITE": map.supportedMapTypes[1] }
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			map.activeMapType = map.mapType.SATELLITE
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		}
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	}
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	Map {
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		id: map
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		anchors.fill: parent
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		zoomLevel: defaultZoomIn
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		property var mapType
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		readonly property var defaultCenter: QtPositioning.coordinate(0, 0)
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		readonly property real defaultZoomIn: 12.0
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		readonly property real defaultZoomOut: 1.0
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		readonly property real textVisibleZoom: 11.0
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		readonly property real zoomStep: 2.0
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		property var newCenter: defaultCenter
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		property real newZoom: 1.0
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		property real newZoomOut: 1.0
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		property var clickCoord: QtPositioning.coordinate(0, 0)
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		property bool isReady: false
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		Component.onCompleted: isReady = true
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		onZoomLevelChanged: {
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			if (isReady)
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				mapHelper.calculateSmallCircleRadius(map.center)
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		}
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		MapItemView {
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			id: mapItemView
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			model: mapHelper.model
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			delegate: MapQuickItem {
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				id: mapItem
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				anchorPoint.x: 0
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				anchorPoint.y: mapItemImage.height
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				coordinate:  model.coordinate
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				z: mapHelper.model.isSelected(model.divesite) ? mapHelper.model.count - 1 : 0
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				sourceItem: Image {
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					id: mapItemImage
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					source: "qrc:///dive-location-marker" + (mapHelper.model.isSelected(model.divesite) ? "-selected" : (mapHelper.editMode ? "-inactive" : "")) + "-icon"
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					SequentialAnimation {
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						id: mapItemImageAnimation
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						PropertyAnimation { target: mapItemImage; property: "scale"; from: 1.0; to: 0.7; duration: 120 }
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						PropertyAnimation { target: mapItemImage; property: "scale"; from: 0.7; to: 1.0; duration: 80 }
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					}
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					MouseArea {
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						drag.target: (mapHelper.editMode && mapHelper.model.isSelected(model.divesite)) ? mapItem : undefined
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						anchors.fill: parent
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						onClicked: {
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							if (!mapHelper.editMode)
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								mapHelper.model.setSelected(model.divesite, true)
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						}
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						onDoubleClicked: map.doubleClickHandler(mapItem.coordinate)
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						onReleased: {
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							if (mapHelper.editMode && mapHelper.model.isSelected(model.divesite)) {
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								mapHelper.updateCurrentDiveSiteCoordinatesFromMap(model.divesite, mapItem.coordinate)
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							}
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						}
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					}
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					Item {
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						// Text with a duplicate for shadow. DropShadow as layer effect is kind of slow here.
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						y: mapItemImage.y + mapItemImage.height
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						visible: map.zoomLevel >= map.textVisibleZoom
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						Text {
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							id: mapItemTextShadow
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							x: mapItemText.x + 2; y: mapItemText.y + 2
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							text: mapItemText.text
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							font.pointSize: mapItemText.font.pointSize
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							color: "black"
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						}
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						Text {
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							id: mapItemText
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							text: model.name
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							font.pointSize: 11.0
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							color: mapHelper.model.isSelected(model.divesite) ? "white" : "lightgrey"
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						}
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					}
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				}
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			}
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		}
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		SequentialAnimation {
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			id: mapAnimationZoomIn
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			NumberAnimation {
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				target: map; property: "zoomLevel"; to: map.newZoomOut; duration: Math.abs(map.newZoomOut - map.zoomLevel) * 200
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			}
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			ParallelAnimation {
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				CoordinateAnimation { target: map; property: "center"; to: map.newCenter; duration: 2000; easing.type: Easing.OutCubic }
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				NumberAnimation {
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					target: map; property: "zoomLevel"; to: map.newZoom; duration: 2000
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				}
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			}
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		}
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		ParallelAnimation {
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			id: mapAnimationClick
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			CoordinateAnimation { target: map; property: "center"; to: map.newCenter; duration: 500	}
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			NumberAnimation { target: map; property: "zoomLevel"; to: map.newZoom; duration: 500 }
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		}
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		MouseArea {
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			anchors.fill: parent
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			onPressed: { map.stopZoomAnimations(); mouse.accepted = false }
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			onWheel: { map.stopZoomAnimations(); wheel.accepted = false }
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			onDoubleClicked: map.doubleClickHandler(map.toCoordinate(Qt.point(mouseX, mouseY)))
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		}
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		function doubleClickHandler(coord) {
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			newCenter = coord
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			newZoom = zoomLevel + zoomStep
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			if (newZoom > maximumZoomLevel)
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				newZoom = maximumZoomLevel
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			mapAnimationClick.restart()
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		}
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		function pointIsVisible(pt) {
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			return !isNaN(pt.x)
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		}
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		function coordIsValid(coord) {
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			if (coord == null || isNaN(coord.latitude) || isNaN(coord.longitude) ||
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			    (coord.latitude === 0.0 && coord.longitude === 0.0))
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				return false;
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			return true;
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		}
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		function stopZoomAnimations() {
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			mapAnimationZoomIn.stop()
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		}
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		function centerOnCoordinate(coord) {
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			stopZoomAnimations()
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			if (!coordIsValid(coord)) {
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				console.warn("MapWidget.qml: centerOnCoordinate(): !coordIsValid()")
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				return
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			}
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			var newZoomOutFound = false
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			var zoomStored = zoomLevel
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			var centerStored = QtPositioning.coordinate(center.latitude, center.longitude)
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			newZoomOut = zoomLevel
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			newCenter = coord
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			zoomLevel = Math.floor(zoomLevel)
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			while (zoomLevel > minimumZoomLevel) {
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				var pt = fromCoordinate(coord)
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				if (pointIsVisible(pt)) {
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					newZoomOut = zoomLevel
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					newZoomOutFound = true
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					break
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				}
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				zoomLevel -= 1.0
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			}
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			if (!newZoomOutFound)
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				newZoomOut = defaultZoomOut
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			zoomLevel = zoomStored
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			center = centerStored
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			newZoom = zoomStored
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			mapAnimationZoomIn.restart()
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		}
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		function centerOnRectangle(topLeft, bottomRight, centerRect) {
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			stopZoomAnimations()
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			if (newCenter.latitude === 0.0 && newCenter.longitude === 0.0) {
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				// Do nothing
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				return
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			}
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			var centerStored = QtPositioning.coordinate(center.latitude, center.longitude)
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			var zoomStored = zoomLevel
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			var newZoomOutFound = false
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			newCenter = centerRect
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			// calculate zoom out
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			newZoomOut = zoomLevel
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			while (zoomLevel > minimumZoomLevel) {
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				var ptCenter = fromCoordinate(centerStored)
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				var ptCenterRect = fromCoordinate(centerRect)
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				if (pointIsVisible(ptCenter) && pointIsVisible(ptCenterRect)) {
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					newZoomOut = zoomLevel
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					newZoomOutFound = true
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					break
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				}
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				zoomLevel -= 1.0
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			}
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			if (!newZoomOutFound)
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				newZoomOut = defaultZoomOut
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			// calculate zoom in
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			center = newCenter
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			zoomLevel = Math.floor(maximumZoomLevel)
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			var diagonalRect = topLeft.distanceTo(bottomRight)
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			while (zoomLevel > minimumZoomLevel) {
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				var c0 = toCoordinate(Qt.point(0.0, 0.0))
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				var c1 = toCoordinate(Qt.point(width, height))
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				if (c0.distanceTo(c1) > diagonalRect) {
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					newZoom = zoomLevel - 2.0
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					break
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				}
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				zoomLevel -= 1.0
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			}
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			if (newZoom > defaultZoomIn)
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				newZoom = defaultZoomIn
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			zoomLevel = zoomStored
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			center = centerStored
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			mapAnimationZoomIn.restart()
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		}
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		function deselectMapLocation() {
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			stopZoomAnimations()
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		}
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	}
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	Rectangle {
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		id: editMessage
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		radius: padding
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		color: "#b08000"
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		border.color: "white"
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		x: (map.width - width) * 0.5; y: padding
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		width: editMessageText.width + padding * 2.0
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		height: editMessageText.height + padding * 2.0
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		visible: false
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		opacity: 0.0
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		property int isVisible: -1
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		property real padding: 10.0
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		onOpacityChanged: visible = opacity != 0.0
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		states: [
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			State { when: editMessage.isVisible === 1; PropertyChanges { target: editMessage; opacity: 1.0 }},
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			State { when: editMessage.isVisible === 0; PropertyChanges { target: editMessage; opacity: 0.0 }}
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		]
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		transitions: Transition { NumberAnimation { properties: "opacity"; easing.type: Easing.InOutQuad }}
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		Text {
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			id: editMessageText
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			y: editMessage.padding; x: editMessage.padding
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			verticalAlignment: Text.AlignVCenter
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			color: "white"
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			font.pointSize: 11.0
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			text: qsTr("Drag the selected dive location")
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		}
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	}
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	Image {
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		id: toggleImage
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		x: 10; y: x
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		width: 40
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		height: 40
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		source: "qrc:///map-style-" + (map.activeMapType === map.mapType.SATELLITE ? "map" : "photo") + "-icon"
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		SequentialAnimation {
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			id: toggleImageAnimation
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			PropertyAnimation { target: toggleImage; property: "scale"; from: 1.0; to: 0.8; duration: 120 }
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			PropertyAnimation { target: toggleImage; property: "scale"; from: 0.8; to: 1.0; duration: 80 }
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		}
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		MouseArea {
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			anchors.fill: parent
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			onClicked: {
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				map.activeMapType = map.activeMapType === map.mapType.SATELLITE ? map.mapType.STREET : map.mapType.SATELLITE
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				toggleImageAnimation.restart()
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			}
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		}
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	}
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	Image {
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		id: imageZoomIn
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		x: 10 + (toggleImage.width - imageZoomIn.width) * 0.5; y: toggleImage.y + toggleImage.height + 10
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		width: 20
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		height: 20
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		source: "qrc:///zoom-in-icon"
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		SequentialAnimation {
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			id: imageZoomInAnimation
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			PropertyAnimation { target: imageZoomIn; property: "scale"; from: 1.0; to: 0.8; duration: 120 }
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			PropertyAnimation { target: imageZoomIn; property: "scale"; from: 0.8; to: 1.0; duration: 80 }
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		}
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		MouseArea {
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			anchors.fill: parent
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			onClicked: {
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				map.stopZoomAnimations()
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				map.newCenter = map.center
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				map.newZoom = map.zoomLevel + map.zoomStep
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				if (map.newZoom > map.maximumZoomLevel)
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					map.newZoom = map.maximumZoomLevel
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				mapAnimationClick.restart()
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				imageZoomInAnimation.restart()
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			}
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		}
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	}
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	Image {
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		id: imageZoomOut
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		x: imageZoomIn.x; y: imageZoomIn.y + imageZoomIn.height + 10
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		source: "qrc:///zoom-out-icon"
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		width: 20
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		height: 20
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		SequentialAnimation {
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			id: imageZoomOutAnimation
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			PropertyAnimation { target: imageZoomOut; property: "scale"; from: 1.0; to: 0.8; duration: 120 }
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			PropertyAnimation { target: imageZoomOut; property: "scale"; from: 0.8; to: 1.0; duration: 80 }
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		}
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		MouseArea {
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			anchors.fill: parent
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			onClicked: {
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				map.stopZoomAnimations()
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				map.newCenter = map.center
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				map.newZoom = map.zoomLevel - map.zoomStep
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				mapAnimationClick.restart()
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				imageZoomOutAnimation.restart()
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			}
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		}
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	}
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	/*
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	 * open coordinates in google maps while attempting to roughly preserve
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	 * the zoom level. the mapping between the QML map zoom level and the
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	 * Google Maps zoom level is done via exponential regression:
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	 *     y = a * exp(b * x)
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	 *
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	 * data set:
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	 *     qml (x)            gmaps (y in meters)
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	 *     21                 257
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	 *     15.313216749178913 3260
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	 *     12.553216749178931 20436
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	 *     11.11321674917894  52883
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	 *     9.313216749178952  202114
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	 *     7.51321674917896   737136
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	 *     5.593216749178958  2495529
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	 *     4.153216749178957  3895765
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	 *     1.753216749178955  18999949
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	 */
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	function openLocationInGoogleMaps(latitude, longitude) {
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		var loc = latitude + "," + longitude
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		var x = map.zoomLevel
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		var a = 53864950.831693
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		var b = -0.60455861606547030630
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		var zoom = Math.floor(a * Math.exp(b * x))
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		var url = "https://www.google.com/maps/place/@" + loc + "," + zoom + "m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0"
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		Qt.openUrlExternally(url)
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		console.log("openLocationInGoogleMaps() map.zoomLevel: " + x + ", url: " + url)
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	}
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	MapWidgetContextMenu {
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		id: contextMenu
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		y: 10; x: map.width - y
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		onActionSelected: {
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			switch (action) {
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			case contextMenu.actions.OPEN_LOCATION_IN_GOOGLE_MAPS:
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				openLocationInGoogleMaps(map.center.latitude, map.center.longitude)
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				break
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			case contextMenu.actions.COPY_LOCATION_DECIMAL:
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				mapHelper.copyToClipboardCoordinates(map.center, false)
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				break
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			case contextMenu.actions.COPY_LOCATION_SEXAGESIMAL:
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				mapHelper.copyToClipboardCoordinates(map.center, true)
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				break
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			case contextMenu.actions.SELECT_VISIBLE_LOCATIONS:
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				mapHelper.selectVisibleLocations()
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				break
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			}
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		}
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	}
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}
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