15.1.544. tablet_qt/resources/camcops/camera_qml/CameraListButton.qml

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// CameraListButton.qml
// - defines the button that offers a selection of cameras (e.g. different
//      connected cameras; front/back cameras on a tablet) and displays the
//      name of the currently selected camera on the main button.
//      Supplies a popup list of available ones; see CameraListPopup.

import QtQuick
import QtMultimedia

Item {
    id: cameraListButton
    property alias value : popup.currentValue
    property alias model : popup.model

    width : 144
    height: 70
    visible: model.length > 0

    BorderImage {
        id: buttonImage
        source: "images/toolbutton.sci"
        width: cameraListButton.width; height: cameraListButton.height
    }

    CameraButton {
        anchors.fill: parent
        text: popup.currentItem !== null ? popup.currentItem.description : ""

        onClicked: popup.toggle()
    }

    CameraListPopup {
        id: popup
        anchors.rightMargin: 16
        visible: opacity > 0
        model: mediaDevices.videoInputs

        MediaDevices {
            id: mediaDevices
        }

        onSelected: popup.toggle()
    }

    states: [
        State {
            name: "MobilePortrait"
            AnchorChanges {
                target: popup
                anchors.bottom: parent.top;
            }
        },
        State {
            name: "MobileLandscape"
            AnchorChanges {
                target: popup
                anchors.top: parent.top;
                anchors.right: parent.left;
            }
        },
        State {
            name: "Other"
            AnchorChanges {
                target: popup
                anchors.top: parent.top;
                anchors.right: parent.left;
            }
        }
    ]
}