Factor out map marker into its own QML element for reuse

src/qml/Component/LocationMapItem.qml

@@ -0,0 +1,58 @@
+// SPDX-FileCopyrightText: 2021 Tobias Fella <fella@posteo.de>
+// SPDX-FileCopyrightText: 2023 Volker Krause <vkrause@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import QtQuick.Layouts 1.15
+import QtLocation 5.15
+import QtPositioning 5.15
+
+import org.kde.kirigami 2.15 as Kirigami
+
+import org.kde.neochat 1.0
+
+/** Location marker for any of the shared location maps. */
+MapQuickItem {
+    id: root
+    required property real latitude
+    required property real longitude
+
+    required property string asset
+    required property var author
+
+    required property bool isLive
+
+    anchorPoint.x: sourceItem.width / 2
+    anchorPoint.y: sourceItem.height
+    coordinate: QtPositioning.coordinate(root.latitude, root.longitude)
+    autoFadeIn: false
+    sourceItem: Kirigami.Icon {
+        width: height
+        height: Kirigami.Units.iconSizes.huge
+        source: "gps"
+        isMask: true
+        color: root.isLive ? Kirigami.Theme.highlightColor : Kirigami.Theme.disabledTextColor
+
+        Kirigami.Icon {
+            anchors.centerIn: parent
+            anchors.verticalCenterOffset: -parent.height / 8
+            visible: root.asset === "m.pin"
+            width: height
+            height: parent.height / 3 + 1
+            source: "pin"
+            isMask: true
+            color: parent.color
+        }
+        Kirigami.Avatar {
+            anchors.centerIn: parent
+            anchors.verticalCenterOffset: -parent.height / 8
+            visible: root.asset === "m.self"
+            width: height
+            height: parent.height / 3 + 1
+            name: root.author.displayName
+            source: root.author.avatarSource
+            color: root.author.color
+        }
+    }
+}