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/*!
\example multimediawidgets/declarative-camera
\title QML Camera Example
\ingroup multimedia_examples
\brief  The Camera Example shows how to use the API to capture a still image
or video.

\image qml-camera.png

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.

Most of the QML code supports the user interface for this application with the
camera types being mostly found in \e {declarative-camera.qml} and
\e {CaptureControls.qml}.

In \e {declarative-camera.qml} the \l Camera is initialized with an id
of \e {camera}, a photo preview is setup, states are implemented for image
preview or capture and \l CaptureControls is initialized. The initial
\e state is \e PhotoCapture. \l CameraCapture includes a handler, \e onImageCaptured,
for the \l {imageCaptured} signal. The handler sets up the application to process
the preview including a change in the user interface state. The \l PhotoPreview
becomes visible with any key press being picked up by the handler
in PhotoPreview and returning the state to \e PhotoCapture.

\e CaptureControls, which is implemented in \e {CaptureControls.qml},
generates a column on the right hand side of the screen which includes control
buttons for \e focus (not initially visible), \e {capture}, \e {flash modes},
\e {white balance}, \e {exposure compensation}, and if a preview is
available a \e {preview} button. The last button exits from the application.

When the Capture button is pressed the \e onClicked handler calls
\l {Camera::captureImage()}{captureImage()}







*/
