ViewerPage: anchor view to keyboard rectangle

src/desktop/qml/KeyboardRectangle.qml

+import QtQuick 2.7
+
+Item {
+    id: root
+
+    anchors { left: parent.left; right: parent.right; bottom: parent.bottom }
+    height: Qt.inputMethod.keyboardRectangle.height
+}

src/desktop/qml/ViewerPage.qml

@@ -12,7 +12,10 @@ Page {
 
     ZoomPanHandler {
         id: zoomPanHandler
-        anchors.fill: parent
+        anchors {
+            left: parent.left; right: parent.right;
+            top: parent.top; bottom: keyboardRectangle.top
+        }
         viewer: viewer
 
         VncOutput {
@@ -31,6 +34,10 @@ Page {
         }
     }
 
+    KeyboardRectangle {
+        id: keyboardRectangle
+    }
+
     function toggleFullScreen() {
         var window = Window.window
         if (window.visibility == Window.FullScreen) {

src/desktop/qml/ui.qrc

 <!DOCTYPE RCC><RCC version="1.0">
 <qresource prefix="/">
   <file>BackButton.qml</file>
+  <file>KeyboardRectangle.qml</file>
   <file>MainPage.qml</file>
   <file>OsdRow.qml</file>
   <file>OsdButton.qml</file>