Use a component to display image link previews

src/qml/Chat/Timeline/EventImage.qml

@@ -0,0 +1,31 @@
+import QtQuick 2.12
+import "../../Base"
+
+HImage {
+    id: image
+    x: eventContent.spacing
+    sourceSize.width: maxDimension
+    sourceSize.height: maxDimension
+    width: Math.min(
+        mainColumn.width - eventContent.spacing * 2,
+        implicitWidth,
+        maxDimension,
+    )
+
+    property int maxDimension: window.settings.messageImageMaxThumbnailSize
+
+    TapHandler {
+        onTapped: Qt.openUrlExternally(image.source)
+    }
+
+    HoverHandler {
+        id: hover
+        onHoveredChanged: eventDelegate.hoveredImage = hovered ? image.source : ""
+    }
+
+    MouseArea {
+        anchors.fill: image
+        acceptedButtons: Qt.NoButton
+        cursorShape: Qt.PointingHandCursor
+    }
+}