map-widget: move the widget and its resources to 'map-widget'

Move all the map widget platform agnostic files to the
<subsurface-root>/map-widget folder.

This avoids the confusion about the desktop version of subsurface
using mobile components. The map widget is planned as a shared
component between the mobile and desktop versions.

desktop-widgets/mapwidget[.h/.cpp] still remain as those are specific
to the desktop version.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>

map-widget/qml/MapWidgetContextMenu.qml

@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+import QtQuick 2.0
+
+Item {
+	id: container
+	signal actionSelected(int action)
+
+	readonly property var actions: {
+		"OPEN_LOCATION_IN_GOOGLE_MAPS": 0,
+		"COPY_LOCATION_DECIMAL":        1,
+		"COPY_LOCATION_SEXAGESIMAL":    2,
+		"SELECT_VISIBLE_LOCATIONS":     3
+	}
+	readonly property var menuItemData: [
+		{ idx: actions.OPEN_LOCATION_IN_GOOGLE_MAPS, itemText: qsTr("Open location in Google Maps") },
+		{ idx: actions.COPY_LOCATION_DECIMAL,        itemText: qsTr("Copy location to clipboard (decimal)") },
+		{ idx: actions.COPY_LOCATION_SEXAGESIMAL,    itemText: qsTr("Copy location to clipboard (sexagesimal)") },
+		{ idx: actions.SELECT_VISIBLE_LOCATIONS,     itemText: qsTr("Select visible dive locations") }
+	]
+	readonly property real itemTextPadding: 10.0
+	readonly property real itemHeight: 34.0
+	readonly property int itemAnimationDuration: 100
+	readonly property color colorItemBackground: "#dedede"
+	readonly property color colorItemBackgroundSelected: "grey"
+	readonly property color colorItemText: "black"
+	readonly property color colorItemTextSelected: "#dedede"
+	readonly property color colorItemBorder: "black"
+	property int listViewIsVisible: -1
+	property real maxItemWidth: 0.0
+
+	Image {
+		id: contextMenuImage
+		x: -width
+		source: "qrc:///mapwidget-context-menu"
+
+		SequentialAnimation {
+			id:contextMenuImageAnimation
+			PropertyAnimation { target: contextMenuImage; property: "scale"; from: 1.0; to: 0.8; duration: 80 }
+			PropertyAnimation { target: contextMenuImage; property: "scale"; from: 0.8; to: 1.0; duration: 60 }
+		}
+
+		MouseArea {
+			anchors.fill: parent
+			onClicked: {
+				contextMenuImageAnimation.restart()
+				listViewIsVisible = (listViewIsVisible !== 1) ? 1 : 0
+			}
+		}
+	}
+
+	ListModel {
+		id: listModel
+		property int selectedIdx: -1
+		Component.onCompleted: {
+			for (var i = 0; i < menuItemData.length; i++)
+				append(menuItemData[i]);
+		}
+	}
+
+	Component {
+		id: listItemDelegate
+		Rectangle {
+			color: model.idx === listModel.selectedIdx ? colorItemBackgroundSelected : colorItemBackground
+			width: maxItemWidth
+			height: itemHeight
+			border.color: colorItemBorder
+			Text {
+				x: itemTextPadding
+				height: itemHeight
+				verticalAlignment: Text.AlignVCenter
+				text: model.itemText
+				font.pointSize: 10.0
+				color: model.idx === listModel.selectedIdx ? colorItemTextSelected : colorItemText
+				onWidthChanged: {
+					if (width + itemTextPadding * 2.0 > maxItemWidth)
+						maxItemWidth = width + itemTextPadding * 2.0
+				}
+				Behavior on color { ColorAnimation { duration: itemAnimationDuration }}
+			}
+			Behavior on color { ColorAnimation { duration: itemAnimationDuration }}
+		}
+	}
+
+	ListView {
+		id: listView
+		y: contextMenuImage.y + contextMenuImage.height + 10;
+		width: maxItemWidth;
+		height: listModel.count * itemHeight
+		visible: false
+		opacity: 0.0
+		interactive: false
+		model: listModel
+		delegate: listItemDelegate
+
+		onCountChanged:	x = -maxItemWidth
+		onVisibleChanged: listModel.selectedIdx = -1
+		onOpacityChanged: visible = opacity != 0.0
+
+		Timer {
+			id: timerListViewVisible
+			running: false
+			repeat: false
+			interval: itemAnimationDuration + 50
+			onTriggered: listViewIsVisible = 0
+		}
+
+		MouseArea {
+			anchors.fill: parent
+			onClicked: {
+				if (opacity < 1.0)
+					return;
+				var idx = listView.indexAt(mouseX, mouseY)
+				listModel.selectedIdx = idx
+				container.actionSelected(idx)
+				timerListViewVisible.restart()
+			}
+		}
+		states: [
+			State { when: listViewIsVisible === 1; PropertyChanges { target: listView; opacity: 1.0 }},
+			State { when: listViewIsVisible === 0; PropertyChanges { target: listView; opacity: 0.0 }}
+		]
+		transitions: Transition { NumberAnimation { properties: "opacity"; easing.type: Easing.InOutQuad }}
+	}
+}