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++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ import QtQuick
++ import QtQuick.Controls
++
++ Rectangle {
++ id: root
++ width: 640
++ height: 480
++ visible: true
++
++ //! [frameAnimation]
++ FrameAnimation {
++ id: frameAnimation
++ property real fps: smoothFrameTime > 0 ? (1.0 / smoothFrameTime) : 0
++ running: true
++ }
++ //! [frameAnimation]
++
++
++ //! [item]
++ Item {
++ id: qt_logo
++ width: 230
++ height: 230
++ anchors.fill: parent
++ anchors.topMargin: 125
++ layer.enabled: true
++ layer.live: slider.value > 0 && frameAnimation.currentFrame % slider.value == 0
++ //! [item]
++
++ Rectangle {
++ id: rectangle
++ anchors.fill: parent
++ color: "black"
++ Image {
++ anchors.fill: parent
++ source: "content/qt_logo.png"
++ }
++
++ // one second is one full rotation
++ RotationAnimation on rotation {
++ loops: Animation.Infinite
++ duration: 1000
++ from: 0
++ to: 360
++ }
++ }
++ }
++
++ Column {
++ anchors.top: root.top
++ anchors.left: root.left
++ anchors.margins: 10
++
++ Label {
++ text: "FPS: " + frameAnimation.fps.toFixed(0)
++ font.pixelSize: 20
++ font.italic: true
++ }
++
++ Label {
++ text: "Rect rotation (degrees): " + rectangle.rotation.toFixed(0)
++ font.pixelSize: 20
++ font.italic: true
++ }
++
++ Row {
++ Label {
++ text: qsTr("Draw every " + slider.value.toFixed(0) + " frame")
++ font.pixelSize: 20
++ font.italic: true
++ }
++
++ Slider {
++ id: slider
++ from: 0
++ value: 1
++ to: 10
++ stepSize: 1
++ }
++ }
++ }
++ }