- Qt 5.15
- Qt Quick Demo - Photo Viewer
- Qt 5.15.12 Reference Documentation

# Qt Quick Demo - Photo Viewer

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     import QtQuick 2.0

     Flipable {
         id: flipable

         property alias frontLabel: frontButton.label
         property alias backLabel: backButton.label

         property int angle: 0
         property int randomAngle: Math.random() * (2 * 6 + 1) - 6
         property bool flipped: false

         signal frontClicked
         signal backClicked
         signal tagChanged(string tag)

         front: EditableButton {
             id: frontButton; rotation: flipable.randomAngle
             anchors { centerIn: parent; verticalCenterOffset: -20 }
             onClicked: flipable.frontClicked()
             onLabelChanged: flipable.tagChanged(label)
         }

         back: Button {
             id: backButton; tint: "red"; rotation: flipable.randomAngle
             anchors { centerIn: parent; verticalCenterOffset: -20 }
             onClicked: flipable.backClicked()
         }

         transform: Rotation {
             origin.x: flipable.width / 2; origin.y: flipable.height / 2
             axis.x: 0; axis.y: 1; axis.z: 0
             angle: flipable.angle
         }

         states: State {
             name: "back"; when: flipable.flipped
             PropertyChanges { target: flipable; angle: 180 }
         }

         transitions: Transition {
             ParallelAnimation {
                 NumberAnimation { properties: "angle"; duration: 400 }
                 SequentialAnimation {
                     NumberAnimation { target: flipable; property: "scale"; to: 0.8; duration: 200 }
                     NumberAnimation { target: flipable; property: "scale"; to: 1.0; duration: 200 }
                 }
             }
         }
     }