Spike: KWin input-method backend with floating layer-shell window

Registers as KWin's virtual keyboard (input-method-unstable-v1), shows a non-focusable layer-shell overlay, and commits Unicode text. Verified in a nested headless KWin with the textprobe tool. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 14:43:44 +02:00
commit cdef9b4ad0
15 changed files with 612 additions and 0 deletions
@@ -0,0 +1,45 @@
+import QtQuick
+import QtQuick.Controls
+
+// Spike UI: proves text commits, keysyms and dragging. Replaced by the real
+// keyboard in milestone 2.
+Window {
+    id: root
+
+    required property var backend
+    property var placement: null
+
+    width: 720
+    height: 120
+    visible: false
+    color: "#d1d3d9"
+
+    Rectangle {
+        id: handle
+        anchors { horizontalCenter: parent.horizontalCenter; bottom: parent.bottom; bottomMargin: 6 }
+        width: 120; height: 6; radius: 3
+        color: "#8e8e93"
+
+        DragHandler {
+            target: null
+            margin: 12
+            property point last
+            onActiveChanged: last = centroid.scenePressPosition
+            onCentroidChanged: {
+                if (!active || !root.placement)
+                    return
+                const p = centroid.scenePosition
+                root.placement.moveBy(p.x - last.x, p.y - last.y)
+            }
+        }
+    }
+
+    Row {
+        anchors.centerIn: parent
+        spacing: 8
+        Button { text: "héllo👍"; focusPolicy: Qt.NoFocus; onClicked: root.backend.commitText(text) }
+        Button { text: "⌫"; focusPolicy: Qt.NoFocus; onClicked: root.backend.sendKeysym(0xff08) }
+        Button { text: "⏎"; focusPolicy: Qt.NoFocus; onClicked: root.backend.sendKeysym(0xff0d) }
+        Label { anchors.verticalCenter: parent.verticalCenter; text: root.backend.active ? "active" : "inactive" }
+    }
+}