Displaying Frame-Rate of System-UI and Applications Example
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import QtQuick 2.11
import QtQuick.Layouts 1.11
import QtQuick.Window 2.11
import QtApplicationManager 2.0
import QtApplicationManager.SystemUI 2.0
Window {
id: sysuiWindowwidth: 1024height: 640Rectangle {
anchors.fill: parentcolor: "linen"// Show a warning on non-Linux platformsRectangle {
visible: Qt.platform.os!=='linux'anchors {
bottom: parent.bottomhorizontalCenter: parent.horizontalCenter
}
width: parent.width/2height: warningLabel.heightz: 1000color: "red"border.color: "white"Text {
id: warningLabelwidth: parent.widthcolor: "white"horizontalAlignment: Text.AlignHCenterwrapMode: Text.Wraptext: "Please note that this example will not show sensible data on your current "+"platform ("+Qt.platform.os+"). Only Linux/multi-process will produce "+"all relevant data points."
}
}
// A graph displaying the FPS of the System UI itselfRectangle {
id: fpsGraphanchors.top: parent.topanchors.right: parent.rightwidth: 500height: 200color: "grey"ListView {
id: listViewanchors.fill: parentorientation: ListView.Horizontalspacing: (fpsGraph.width/model.count) *0.2clip: trueinteractive: falsemodel: MonitorModel {
id: monitorModelrunning: true// Just put a FrameTimer inside a MonitorModel and you can use it as a data source// There's no need to set its running property as the MonitorModel will take care of asking// it to update itself when appropriate.FrameTimer { window: sysuiWindow }
}
delegate: Rectangle {
width: (fpsGraph.width/monitorModel.count) *0.8height: (model.averageFps/100) *fpsGraph.heighty: fpsGraph.height-heightcolor: "blue"
}
}
Text {
anchors.top: parent.toptext: "100"font.pixelSize: 15
}
Text {
anchors.verticalCenter: parent.verticalCentertext: "50"font.pixelSize: 15
}
Text {
anchors.bottom: parent.bottomtext: "0"font.pixelSize: 15
}
}
// Application icons.// Click on an icon to start its application and click on it again to stop it.ColumnLayout {
anchors.left: parent.leftanchors.top: parent.topanchors.margins: 10spacing: 15Repeater {
model: ApplicationManagerColumnLayout {
Layout.alignment: Qt.AlignHCenterRectangle {
Layout.alignment: Qt.AlignHCenterwidth: 100; height: 100; radius: width/4color: model.isRunning ? "darkgrey" : "lightgrey"Image {
anchors.fill: parentsource: iconsourceSize.width: 100sourceSize.height: 100
}
MouseArea {
anchors.fill: parentonClicked: {
if (model.isRunning)
application.stop();
elseapplication.start();
}
}
}
Text {
Layout.alignment: Qt.AlignHCentertext: model.name+" application"horizontalAlignment: Text.AlignHCenter
}
}
}
}
// Application windows.// Each WindowObject is put in a WindowItem decorated with a border and a title bar.Repeater {
model: ListModel { id: windowsModel }
delegate: Rectangle {
id: winChromewidth: 400; height: 320z: model.indexcolor: "tan"// Title bar textText {
anchors.horizontalCenter: parent.horizontalCentertext: model.window.application.name("en") +" application window"
}
// Raises the window when the title bar is clicked and moves it around when dragged.MouseArea {
anchors.fill: parentdrag.target: parentonPressed: windowsModel.move(model.index, windowsModel.count-1, 1);
}
// Close buttonRectangle {
width: 25; height: 25color: "chocolate"Text {
anchors.fill: parentfontSizeMode: Text.Fit; minimumPixelSize: 10; font.pixelSize: 25horizontalAlignment: Text.AlignHCenter; verticalAlignment: Text.AlignVCentertext: "x"
}
MouseArea {
anchors.fill: parentonClicked: model.window.close()
}
}
// The window itselfWindowItem {
id: windowItemanchors.fill: parentanchors.margins: 3anchors.topMargin: 25window: model.windowRectangle {
anchors.fill: fpsOverlaycolor: "black"opacity: 0.3
}
// And its FPS overlayColumn {
id: fpsOverlayanchors.top: parent.topanchors.left: parent.leftanchors.margins: 4Text {
text: "averageFps: "+Number(frameTimer.averageFps).toLocaleString(Qt.locale("en_US"), 'f', 1)
font.pixelSize: 16; color: "white"
}
Text {
text: "maximumFps: "+Number(frameTimer.maximumFps).toLocaleString(Qt.locale("en_US"), 'f', 1)
font.pixelSize: 16; color: "white"
}
Text {
text: "minimumFps: "+Number(frameTimer.minimumFps).toLocaleString(Qt.locale("en_US"), 'f', 1)
font.pixelSize: 16; color: "white"
}
Text {
text: "jitterFps: "+Number(frameTimer.jitterFps).toLocaleString(Qt.locale("en_US"), 'f', 1)
font.pixelSize: 16; color: "white"
}
}
}
// FrameTimer will calculate the frame rate numbers for the given windowFrameTimer {
id: frameTimer// no sense in trying to update the FrameTimer while the window has no surface (or has just an empty one)running: window&&window.contentState===WindowObject.SurfaceWithContentwindow: model.window
}
Component.onCompleted: {
winChrome.x=300+model.index*50;
winChrome.y=10+model.index*30;
}
readonly property boolshouldBeRemoved: model.window&&model.window.contentState===WindowObject.NoSurfaceonShouldBeRemovedChanged: if (shouldBeRemoved) windowsModel.remove(model.index, 1)
}
}
// Populates the windowsModelConnections {
target: WindowManageronWindowAdded: windowsModel.append({"window":window})
}
}
}