main.qml Example File

overview-compositor/main.qml
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 import QtQuick 2.7
 import QtWayland.Compositor 1.3
 import QtQuick.Window 2.3
 import QtQuick.Controls 2.0

 WaylandCompositor {
     WaylandOutput {
         sizeFollowsWindow: true
         window: Window {
             id: win

             property int pixelWidth: width * screen.devicePixelRatio
             property int pixelHeight: height * screen.devicePixelRatio

             visible: true
             width: 1280
             height: 720

             Grid {
                 id: grid

                 property bool overview: true
                 property int selected: 0
                 property int selectedColumn: selected % columns
                 property int selectedRow: selected / columns

                 anchors.fill: parent
                 columns: Math.ceil(Math.sqrt(toplevels.count))
                 transform: [
                     Scale {
                         xScale: grid.overview ? (1.0/grid.columns) : 1
                         yScale: grid.overview ? (1.0/grid.columns) : 1
                         Behavior on xScale { PropertyAnimation { easing.type: Easing.InOutQuad; duration: 200 } }
                         Behavior on yScale { PropertyAnimation { easing.type: Easing.InOutQuad; duration: 200 } }
                     },
                     Translate {
                         x: grid.overview ? 0 : win.width * -grid.selectedColumn
                         y: grid.overview ? 0 : win.height * -grid.selectedRow
                         Behavior on x { PropertyAnimation { easing.type: Easing.InOutQuad; duration: 200 } }
                         Behavior on y { PropertyAnimation { easing.type: Easing.InOutQuad; duration: 200 } }
                     }
                 ]

                 Repeater {
                     model: toplevels
                     Item {
                         width: win.width
                         height: win.height
                         ShellSurfaceItem {
                             anchors.fill: parent
                             shellSurface: xdgSurface
                             autoCreatePopupItems: true
                             sizeFollowsSurface: false
                             onSurfaceDestroyed: toplevels.remove(index)
                         }
                         MouseArea {
                             enabled: grid.overview
                             anchors.fill: parent
                             onClicked: {
                                 grid.selected = index;
                                 grid.overview = false;
                             }
                         }
                     }
                 }
             }

             Button {
                 anchors.horizontalCenter: parent.horizontalCenter
                 anchors.bottom: parent.bottom
                 text: "Toggle overview";
                 onClicked: grid.overview = !grid.overview
             }

             Shortcut { sequence: "space"; onActivated: grid.overview = !grid.overview }
             Shortcut { sequence: "right"; onActivated: grid.selected = Math.min(grid.selected+1, toplevels.count-1) }
             Shortcut { sequence: "left"; onActivated: grid.selected = Math.max(grid.selected-1, 0) }
             Shortcut { sequence: "up"; onActivated: grid.selected = Math.max(grid.selected-grid.columns, 0) }
             Shortcut { sequence: "down"; onActivated: grid.selected = Math.min(grid.selected+grid.columns, toplevels.count-1) }
         }
     }

     ListModel { id: toplevels }

     XdgShell {
         onToplevelCreated: {
             toplevels.append({xdgSurface});
             toplevel.sendFullscreen(Qt.size(win.pixelWidth, win.pixelHeight));
         }
     }
 }