declarative-camera.qml Example File

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 import QtQuick 2.0
 import QtMultimedia 5.0

 Rectangle {
     id : cameraUI
     color: "black"
     state: "PhotoCapture"

     states: [
         State {
             name: "PhotoCapture"
             StateChangeScript {
                 script: {
                     camera.visible = true
                     camera.focus = true
                     stillControls.visible = true
                     photoPreview.visible = false
                 }
             }
         },
         State {
             name: "PhotoPreview"
             StateChangeScript {
                 script: {
                     camera.visible = false
                     stillControls.visible = false
                     photoPreview.visible = true
                     photoPreview.focus = true
                 }
             }
         }
     ]

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

         Keys.onPressed : {
             //return to capture mode if the shutter button is touched
             if (event.key == Qt.Key_CameraFocus && !event.isAutoRepeat) {
                 cameraUI.state = "PhotoCapture"
                 event.accepted = true;
             }
         }
     }

     Camera {
         id: camera
         x: 0
         y: 0
         width: parent.width - stillControls.buttonsPanelWidth
         height: parent.height
         focus: visible //to receive focus and capture key events
         //captureResolution : "640x480"

         flashMode: stillControls.flashMode
         whiteBalanceMode: stillControls.whiteBalance
         exposureCompensation: stillControls.exposureCompensation

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

     CaptureControls {
         id: stillControls
         anchors.fill: parent
         camera: camera
         onPreviewSelected: cameraUI.state = "PhotoPreview"
     }

 }