qtmultimedia/examples/declarative-camera/CaptureControls.qml

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import QtQuick 2.0
import QtMultimedia 5.0

FocusScope {
    property Camera camera
    property bool previewAvailable : false

    property alias whiteBalance : wbModesButton.value
    property alias flashMode : flashModesButton.value
    property alias exposureCompensation : exposureCompensationButton.value

    property int buttonsPanelWidth: buttonPaneShadow.width

    signal previewSelected
    id : captureControls

    Rectangle {
        id: buttonPaneShadow
        width: buttonPanningPane.width + 16
        height: parent.height
        anchors.top: parent.top
        anchors.right: parent.right
        color: Qt.rgba(0.08, 0.08, 0.08, 1)

        Flickable {
            id: buttonPanningPane
            anchors {
                right: parent.right
                top: parent.top
                bottom: parent.bottom
                margins: 8
            }
            width: buttonsColumn.width

            contentWidth: buttonsColumn.width
            contentHeight: buttonsColumn.height

            Column {
                id: buttonsColumn
                spacing: 8

                FocusButton {
                    camera: captureControls.camera
                }

                CameraButton {
                    text: "Capture"
                    onClicked: camera.captureImage()
                }

                CameraPropertyButton {
                    id : flashModesButton
                    value: Camera.FlashOff
                    model: ListModel {
                        ListElement {
                            icon: "images/camera_flash_auto.png"
                            value: Camera.FlashAuto
                            text: "Auto"
                        }
                        ListElement {
                            icon: "images/camera_flash_off.png"
                            value: Camera.FlashOff
                            text: "Off"
                        }
                        ListElement {
                            icon: "images/camera_flash_fill.png"
                            value: Camera.FlashOn
                            text: "On"
                        }
                        ListElement {
                            icon: "images/camera_flash_redeye.png"
                            value: Camera.FlashRedEyeReduction
                            text: "Red Eye Reduction"
                        }
                    }
                }

                CameraPropertyButton {
                    id : wbModesButton
                    value: Camera.WhiteBalanceAuto
                    model: ListModel {
                        ListElement {
                            icon: "images/camera_auto_mode.png"
                            value: Camera.WhiteBalanceAuto
                            text: "Auto"
                        }
                        ListElement {
                            icon: "images/camera_white_balance_sunny.png"
                            value: Camera.WhiteBalanceSunlight
                            text: "Sunlight"
                        }
                        ListElement {
                            icon: "images/camera_white_balance_cloudy.png"
                            value: Camera.WhiteBalanceCloudy
                            text: "Cloudy"
                        }
                        ListElement {
                            icon: "images/camera_white_balance_incandescent.png"
                            value: Camera.WhiteBalanceTungsten
                            text: "Tungsten"
                        }
                        ListElement {
                            icon: "images/camera_white_balance_flourescent.png"
                            value: Camera.WhiteBalanceFluorescent
                            text: "Fluorescent"
                        }
                    }
                }

                ExposureCompensationButton {
                    id : exposureCompensationButton
                }

                CameraButton {
                    text: "View"
                    onClicked: captureControls.previewSelected()
                    visible: captureControls.previewAvailable
                }

                CameraButton {
                    id: quitButton
                    text: "Quit"
                    onClicked: Qt.quit()
                }

            }
        }
    }


    Item {
        id: exposureDetails
        anchors.bottom : parent.bottom
        anchors.left : parent.left
        anchors.bottomMargin: 16
        anchors.leftMargin: 16
        height: childrenRect.height
        width: childrenRect.width

        visible : camera.lockStatus == Camera.Locked

        Rectangle {
            opacity: 0.4
            color: "black"
            anchors.fill: parent
        }

        Row {
            spacing : 16

            Text {
                text: "Av: "+camera.aperture.toFixed(1)
                font.pixelSize: 18
                color: "white"
                visible: camera.aperture > 0
            }

            Text {
                font.pixelSize: 18
                color: "white"
                visible: camera.shutterSpped > 0
                text: "Tv: "+printableExposureTime(camera.shutterSpeed)

                function printableExposureTime(t) {
                    if (t > 3.9)
                        return "Tv: "+t.toFixed() + "\"";

                    if (t > 0.24 )
                        return "Tv: "+t.toFixed(1) + "\"";

                    if (t > 0)
                        return "Tv: 1/"+(1/t).toFixed();

                    return "";
                }
            }

            Text {
                text: "ISO: "+camera.iso.toFixed()
                font.pixelSize: 18
                color: "white"
                visible: camera.iso > 0
            }
        }
    }

    ZoomControl {
        x : 0
        y : 0
        width : 100
        height: parent.height

        currentZoom: camera.digitalZoom
        maximumZoom: Math.min(4.0, camera.maximumDigitalZoom)
        onZoomTo: camera.setDigitalZoom(value)
    }
}