Chrome.qml Example File

pure-qml/qml/Chrome.qml
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 import QtQuick 2.0
 import QtWayland.Compositor 1.0

 ShellSurfaceItem {
     id: chrome

     property bool isChild: parent.shellSurface !== undefined

     signal destroyAnimationFinished

     // If the client asks to show popups on this surface, automatically create child ShellSurfaceItems
     autoCreatePopupItems: true

     onSurfaceDestroyed: {
         bufferLocked = true;
         destroyAnimation.start();
     }

     transform: [
         Scale {
             id: scaleTransform
             origin.x: chrome.width / 2
             origin.y: chrome.height / 2
         }
     ]

     Connections {
         target: shellSurface

         // some signals are not available on wl_shell, so let's ignore them
         ignoreUnknownSignals: true

         onActivatedChanged: { // xdg_shell only
             if (shellSurface.activated) {
                 receivedFocusAnimation.start();
             }
         }
     }

     SequentialAnimation {
         id: destroyAnimation

         ParallelAnimation {
             NumberAnimation { target: scaleTransform; property: "yScale"; to: 2/height; duration: 150 }
             NumberAnimation { target: scaleTransform; property: "xScale"; to: 0.4; duration: 150 }
             NumberAnimation { target: chrome; property: "opacity"; to: chrome.isChild ? 0 : 1; duration: 150 }
         }
         NumberAnimation { target: scaleTransform; property: "xScale"; to: 0; duration: 150 }
         ScriptAction { script: destroyAnimationFinished() }
     }

     SequentialAnimation {
         id: receivedFocusAnimation

         ParallelAnimation {
             NumberAnimation { target: scaleTransform; property: "yScale"; to: 1.02; duration: 100; easing.type: Easing.OutQuad }
             NumberAnimation { target: scaleTransform; property: "xScale"; to: 1.02; duration: 100; easing.type: Easing.OutQuad }
         }
         ParallelAnimation {
             NumberAnimation { target: scaleTransform; property: "yScale"; to: 1; duration: 100; easing.type: Easing.InOutQuad }
             NumberAnimation { target: scaleTransform; property: "xScale"; to: 1; duration: 100; easing.type: Easing.InOutQuad }
         }
     }
 }