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qtmultimedia5-doc-5.12.6-1.mga7.noarch.rpm

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<td >Qt 5.12</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-modules.html">C++ Classes</a></td><td >QCameraZoomControl</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtmultimedia-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#static-public-members">Static Public Members</a></li>
<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#macros">Macros</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QCameraZoomControl Class</h1>
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<p>The <a href="qcamerazoomcontrol.html">QCameraZoomControl</a> class supplies control for optical and digital camera zoom. <a href="#details">More...</a></p>
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<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QCameraZoomControl&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += multimedia</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qmediacontrol.html">QMediaControl</a></td></tr></table></div><ul>
<li><a href="qcamerazoomcontrol-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#dtor.QCameraZoomControl">~QCameraZoomControl</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#currentDigitalZoom">currentDigitalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#currentOpticalZoom">currentOpticalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumDigitalZoom">maximumDigitalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumOpticalZoom">maximumOpticalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#requestedDigitalZoom">requestedDigitalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual qreal </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#requestedOpticalZoom">requestedOpticalZoom</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#zoomTo">zoomTo</a></b>(qreal <i>optical</i>, qreal <i>digital</i>) = 0</td></tr>
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<a name="signals"></a>
<h2 id="signals">Signals</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#currentDigitalZoomChanged">currentDigitalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#currentOpticalZoomChanged">currentOpticalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumDigitalZoomChanged">maximumDigitalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumOpticalZoomChanged">maximumOpticalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#requestedDigitalZoomChanged">requestedDigitalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#requestedOpticalZoomChanged">requestedOpticalZoomChanged</a></b>(qreal <i>zoom</i>)</td></tr>
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<h2 id="static-public-members">Static Public Members</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#staticMetaObject-var">staticMetaObject</a></b></td></tr>
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<a name="protected-functions"></a>
<h2 id="protected-functions">Protected Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#QCameraZoomControl">QCameraZoomControl</a></b>(QObject *<i>parent</i> = nullptr)</td></tr>
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<a name="macros"></a>
<h2 id="macros">Macros</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#QCameraZoomControl_iid">QCameraZoomControl_iid</a></b></td></tr>
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<a name="details"></a>
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<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qcamerazoomcontrol.html">QCameraZoomControl</a> class supplies control for optical and digital camera zoom.</p>
<p>The interface name of <a href="qcamerazoomcontrol.html">QCameraZoomControl</a> is <code>org.qt-project.qt.camerazoomcontrol/5.0</code> as defined in <a href="qcamerazoomcontrol.html#QCameraZoomControl_iid">QCameraZoomControl_iid</a>.</p>
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<p><b>See also </b><a href="qmediaservice.html#requestControl-1">QMediaService::requestControl</a>() and <a href="qcamera.html">QCamera</a>.</p>
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<div class="func">
<h2>Member Function Documentation</h2>
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<h3 class="fn" id="QCameraZoomControl"><a name="QCameraZoomControl"></a><code>[protected] </code>QCameraZoomControl::<span class="name">QCameraZoomControl</span>(<span class="type">QObject</span> *<i>parent</i> = nullptr)</h3>
<p>Constructs a camera zoom control object with <i>parent</i>.</p>
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<h3 class="fn" id="dtor.QCameraZoomControl"><a name="dtor.QCameraZoomControl"></a><code>[virtual] </code>QCameraZoomControl::<span class="name">~QCameraZoomControl</span>()</h3>
<p>Destruct the camera zoom control object.</p>
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<h3 class="fn" id="currentDigitalZoom"><a name="currentDigitalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">currentDigitalZoom</span>() const</h3>
<p>Return the current digital zoom value.</p>
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<h3 class="fn" id="currentDigitalZoomChanged"><a name="currentDigitalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">currentDigitalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the current digital <i>zoom</i> value changed.</p>
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<h3 class="fn" id="currentOpticalZoom"><a name="currentOpticalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">currentOpticalZoom</span>() const</h3>
<p>Return the current optical zoom value.</p>
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<h3 class="fn" id="currentOpticalZoomChanged"><a name="currentOpticalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">currentOpticalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the current optical <i>zoom</i> value changed.</p>
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<h3 class="fn" id="maximumDigitalZoom"><a name="maximumDigitalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">maximumDigitalZoom</span>() const</h3>
<p>Returns the maximum digital zoom value, or 1.0 if digital zoom is not supported.</p>
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<h3 class="fn" id="maximumDigitalZoomChanged"><a name="maximumDigitalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">maximumDigitalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the maximum supported digital <i>zoom</i> value changed.</p>
<p>The maximum supported zoom value can depend on other camera settings, like capture mode or resolution.</p>
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<h3 class="fn" id="maximumOpticalZoom"><a name="maximumOpticalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">maximumOpticalZoom</span>() const</h3>
<p>Returns the maximum optical zoom value, or 1.0 if optical zoom is not supported.</p>
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<h3 class="fn" id="maximumOpticalZoomChanged"><a name="maximumOpticalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">maximumOpticalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the maximum supported optical <i>zoom</i> value changed.</p>
<p>The maximum supported zoom value can depend on other camera settings, like focusing mode.</p>
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<h3 class="fn" id="requestedDigitalZoom"><a name="requestedDigitalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">requestedDigitalZoom</span>() const</h3>
<p>Return the requested digital zoom value.</p>
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<h3 class="fn" id="requestedDigitalZoomChanged"><a name="requestedDigitalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">requestedDigitalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the requested digital <i>zoom</i> value changed.</p>
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<h3 class="fn" id="requestedOpticalZoom"><a name="requestedOpticalZoom"></a><code>[pure virtual] </code><span class="type">qreal</span> QCameraZoomControl::<span class="name">requestedOpticalZoom</span>() const</h3>
<p>Return the requested optical zoom value.</p>
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<h3 class="fn" id="requestedOpticalZoomChanged"><a name="requestedOpticalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">requestedOpticalZoomChanged</span>(<span class="type">qreal</span> <i>zoom</i>)</h3>
<p>Signal emitted when the requested optical <i>zoom</i> value changed.</p>
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<h3 class="fn" id="zoomTo"><a name="zoomTo"></a><code>[pure virtual] </code><span class="type">void</span> QCameraZoomControl::<span class="name">zoomTo</span>(<span class="type">qreal</span> <i>optical</i>, <span class="type">qreal</span> <i>digital</i>)</h3>
<p>Sets <i>optical</i> and <i>digital</i> zoom values.</p>
<p>Zooming can be asynchronous with value changes reported with <a href="qcamerazoomcontrol.html#currentDigitalZoomChanged">currentDigitalZoomChanged</a>() and <a href="qcamerazoomcontrol.html#currentOpticalZoomChanged">currentOpticalZoomChanged</a>() signals.</p>
<p>The backend should expect and correctly handle frequent zoomTo() calls during zoom animations or slider movements.</p>
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<div class="macros">
<h2>Macro Documentation</h2>
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<h3 class="fn" id="QCameraZoomControl_iid"><a name="QCameraZoomControl_iid"></a><span class="name">QCameraZoomControl_iid</span></h3>
<p><code>org.qt-project.qt.camerazoomcontrol/5.0</code></p>
<p>Defines the interface name of the <a href="qcamerazoomcontrol.html">QCameraZoomControl</a> class.</p>
<!-- @@@QCameraZoomControl_iid -->
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