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Qt 5.2.1 Reference Documentation</li>
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<h1 class="title">QML Camera Example</h1>
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<p>The Camera Example shows how to use the API to capture a still image or video.<p class="centerAlign"><img src="images/qml-camera.png" alt="" /></p><p>This example demonstrates how to use the Qt Multimedia QML API to access camera functions. It shows how to change settings and to capture images.</p>
<p>Most of the QML code supports the user interface for this application with the camera types being mostly found in <i>declarative-camera.qml</i> and <i>CaptureControls.qml</i>.</p>
<p>In <i>declarative-camera.qml</i> the <a href="qml-qtmultimedia-camera.html">Camera</a> is initialized with an id of <i>camera</i>, a photo preview is setup, states are implemented for image preview or capture and CaptureControls is initialized. The initial <i>state</i> is <i>PhotoCapture</i>. <a href="qml-qtmultimedia-cameracapture.html">CameraCapture</a> includes a handler, <i>onImageCaptured</i>, for the imageCaptured signal. The handler sets up the application to process the preview including a change in the user interface state. The PhotoPreview becomes visible with any key press being picked up by the handler in PhotoPreview and returning the state to <i>PhotoCapture</i>.</p>
<p><i>CaptureControls</i>, which is implemented in <i>CaptureControls.qml</i>, generates a column on the right hand side of the screen which includes control buttons for <i>focus</i> (not initially visible), <i>capture</i>, <i>flash modes</i>, <i>white balance</i>, <i>exposure compensation</i>, and if a preview is available a <i>preview</i> button. The last button exits from the application.</p>
<p>When the Capture button is pressed the <i>onClicked</i> handler calls captureImage()</p>
<p>Files:</p>
<ul>
<li><a href="qtmultimedia-declarative-camera-camerabutton-qml.html">declarative-camera/CameraButton.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-camerapropertybutton-qml.html">declarative-camera/CameraPropertyButton.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-camerapropertypopup-qml.html">declarative-camera/CameraPropertyPopup.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-focusbutton-qml.html">declarative-camera/FocusButton.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-photocapturecontrols-qml.html">declarative-camera/PhotoCaptureControls.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-photopreview-qml.html">declarative-camera/PhotoPreview.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-videocapturecontrols-qml.html">declarative-camera/VideoCaptureControls.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-videopreview-qml.html">declarative-camera/VideoPreview.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-zoomcontrol-qml.html">declarative-camera/ZoomControl.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-declarative-camera-qml.html">declarative-camera/declarative-camera.qml</a></li>
<li><a href="qtmultimedia-declarative-camera-qmlcamera-cpp.html">declarative-camera/qmlcamera.cpp</a></li>
<li><a href="qtmultimedia-declarative-camera-declarative-camera-pro.html">declarative-camera/declarative-camera.pro</a></li>
<li><a href="qtmultimedia-declarative-camera-declarative-camera-qmlproject.html">declarative-camera/declarative-camera.qmlproject</a></li>
<li><a href="qtmultimedia-declarative-camera-declarative-camera-qrc.html">declarative-camera/declarative-camera.qrc</a></li>
</ul>
<p>Images:</p>
<ul>
<li><a href="images/used-in-examples/declarative-camera/images/camera_auto_mode.png">declarative-camera/images/camera_auto_mode.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_camera_setting.png">declarative-camera/images/camera_camera_setting.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_flash_auto.png">declarative-camera/images/camera_flash_auto.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_flash_fill.png">declarative-camera/images/camera_flash_fill.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_flash_off.png">declarative-camera/images/camera_flash_off.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_flash_redeye.png">declarative-camera/images/camera_flash_redeye.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_white_balance_cloudy.png">declarative-camera/images/camera_white_balance_cloudy.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_white_balance_flourescent.png">declarative-camera/images/camera_white_balance_flourescent.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_white_balance_incandescent.png">declarative-camera/images/camera_white_balance_incandescent.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/camera_white_balance_sunny.png">declarative-camera/images/camera_white_balance_sunny.png</a></li>
<li><a href="images/used-in-examples/declarative-camera/images/toolbutton.png">declarative-camera/images/toolbutton.png</a></li>
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