qt-everywhere-src-5.15.1/qtdeclarative/tests/testapplications/elements/content/ImageParticleElement.qml

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import QtQuick 2.0
import QtQuick.Particles 2.0

Item {
    id: imageparticleelementtest
    anchors.fill: parent
    property string testtext: ""

    ParticleSystem {
        id: particlesystemelement
        anchors.fill: parent
        ImageParticle {
            id: imageparticle
            source: "pics/smile.png"
            color: "red"
            Behavior on color { ColorAnimation { duration: 3000 } }
        }
        Emitter {
            id: particleemitter
            anchors.centerIn: parent
            emitRate: 50
            lifeSpan: 3000
            velocity: AngleDirection { angle: 0; angleVariation: 360; magnitude: 60 }
        }
    }


    SystemTestHelp { id: helpbubble; visible: statenum != 0
        anchors { top: parent.top; horizontalCenter: parent.horizontalCenter; topMargin: 50 }
    }
    BugPanel { id: bugpanel }

    states: [
        State { name: "start"; when: statenum == 1
            PropertyChanges { target: imageparticleelementtest
                testtext: "This is an ImageParticle element. It should be emitting particles "+
                "from the center of the display.\n"+
                "Next, let's change the color of the particles." }
        },
        State { name: "green"; when: statenum == 2
            PropertyChanges { target: imageparticle; color: "lightgreen" }
            PropertyChanges { target: imageparticleelementtest
                testtext: "The particles should now be green.\n"+
                "Next, let's get them spinning." }
        },
        State { name: "spinning"; when: statenum == 3
            PropertyChanges { target: imageparticle; color: "lightgreen"; rotation: 360; rotationVelocity: 100 }
            PropertyChanges { target: imageparticleelementtest
                testtext: "The particles should now be green and spinning.\n"+
                "Next, let's get them popping in and out." }
        },
        State { name: "scaling"; when: statenum == 4
            PropertyChanges { target: imageparticle; color: "lightgreen"; rotation: 360; rotationVelocity: 100; entryEffect: ImageParticle.Scale }
            PropertyChanges { target: imageparticleelementtest
                testtext: "The particles should now be scaling in and out.\n"+
                "Advance to restart the test." }
        }
    ]
}