- Qt 5.5
- Qt Multimedia
- QML Camera Example
- declarative-camera.qml Example File
- Qt 5.5.1 Reference Documentation

# declarative-camera.qml Example File

declarative-camera/declarative-camera.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    **
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    import QtQuick 2.0
    import QtMultimedia 5.4

    Rectangle {
        id : cameraUI

        width: 800
        height: 480

        color: "black"
        state: "PhotoCapture"

        states: [
            State {
                name: "PhotoCapture"
                StateChangeScript {
                    script: {
                        camera.captureMode = Camera.CaptureStillImage
                        camera.start()
                    }
                }
            },
            State {
                name: "PhotoPreview"
            },
            State {
                name: "VideoCapture"
                StateChangeScript {
                    script: {
                        camera.captureMode = Camera.CaptureVideo
                        camera.start()
                    }
                }
            },
            State {
                name: "VideoPreview"
                StateChangeScript {
                    script: {
                        camera.stop()
                    }
                }
            }
        ]

        Camera {
            id: camera
            captureMode: Camera.CaptureStillImage

            imageCapture {
                onImageCaptured: {
                    photoPreview.source = preview
                    stillControls.previewAvailable = true
                    cameraUI.state = "PhotoPreview"
                }
            }

            videoRecorder {
                 resolution: "640x480"
                 frameRate: 30
            }
        }

        PhotoPreview {
            id : photoPreview
            anchors.fill : parent
            onClosed: cameraUI.state = "PhotoCapture"
            visible: cameraUI.state == "PhotoPreview"
            focus: visible
        }

        VideoPreview {
            id : videoPreview
            anchors.fill : parent
            onClosed: cameraUI.state = "VideoCapture"
            visible: cameraUI.state == "VideoPreview"
            focus: visible

            //don't load recorded video if preview is invisible
            source: visible ? camera.videoRecorder.actualLocation : ""
        }

        VideoOutput {
            id: viewfinder
            visible: cameraUI.state == "PhotoCapture" || cameraUI.state == "VideoCapture"

            x: 0
            y: 0
            width: parent.width - stillControls.buttonsPanelWidth
            height: parent.height

            source: camera
            autoOrientation: true
        }

        PhotoCaptureControls {
            id: stillControls
            anchors.fill: parent
            camera: camera
            visible: cameraUI.state == "PhotoCapture"
            onPreviewSelected: cameraUI.state = "PhotoPreview"
            onVideoModeSelected: cameraUI.state = "VideoCapture"
        }

        VideoCaptureControls {
            id: videoControls
            anchors.fill: parent
            camera: camera
            visible: cameraUI.state == "VideoCapture"
            onPreviewSelected: cameraUI.state = "VideoPreview"
            onPhotoModeSelected: cameraUI.state = "PhotoCapture"
        }
    }