<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qcamerazoomcontrol.cpp --> <title>QCameraZoomControl Class | Qt Multimedia 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <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 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <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> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">QCameraZoomControl Class</h1> <!-- $$$QCameraZoomControl-brief --> <p>The <a href="qcamerazoomcontrol.html">QCameraZoomControl</a> class supplies control for optical and digital camera zoom. <a href="#details">More...</a></p> <!-- @@@QCameraZoomControl --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QCameraZoomControl></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> </table></div> <a name="signals"></a> <h2 id="signals">Signals</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#currentDigitalZoomChanged">currentDigitalZoomChanged</a></b>(qreal <i>digitalZoom</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>opticalZoom</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumDigitalZoomChanged">maximumDigitalZoomChanged</a></b>(<i>qreal</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#maximumOpticalZoomChanged">maximumOpticalZoomChanged</a></b>(<i>qreal</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>digitalZoom</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>opticalZoom</i>)</td></tr> </table></div> <a name="static-public-members"></a> <h2 id="static-public-members">Static Public Members</h2> <div class="table"><table class="alignedsummary"> <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> </table></div> <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> </table></div> <a name="macros"></a> <h2 id="macros">Macros</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qcamerazoomcontrol.html#QCameraZoomControl_iid">QCameraZoomControl_iid</a></b></td></tr> </table></div> <a name="details"></a> <!-- $$$QCameraZoomControl-description --> <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> </div> <p><b>See also </b><a href="qmediaservice.html#requestControl-1">QMediaService::requestControl</a>() and <a href="qcamera.html">QCamera</a>.</p> <!-- @@@QCameraZoomControl --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QCameraZoomControl[overload1]$$$QCameraZoomControlQObject* --> <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> <!-- @@@QCameraZoomControl --> <!-- $$$~QCameraZoomControl[overload1]$$$~QCameraZoomControl --> <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> <!-- @@@~QCameraZoomControl --> <!-- $$$currentDigitalZoom[overload1]$$$currentDigitalZoom --> <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> <!-- @@@currentDigitalZoom --> <!-- $$$currentDigitalZoomChanged[overload1]$$$currentDigitalZoomChangedqreal --> <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>digitalZoom</i>)</h3> <!-- @@@currentDigitalZoomChanged --> <!-- $$$currentOpticalZoom[overload1]$$$currentOpticalZoom --> <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> <!-- @@@currentOpticalZoom --> <!-- $$$currentOpticalZoomChanged[overload1]$$$currentOpticalZoomChangedqreal --> <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>opticalZoom</i>)</h3> <!-- @@@currentOpticalZoomChanged --> <!-- $$$maximumDigitalZoom[overload1]$$$maximumDigitalZoom --> <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> <!-- @@@maximumDigitalZoom --> <!-- $$$maximumDigitalZoomChanged[overload1]$$$maximumDigitalZoomChangedqreal --> <h3 class="fn" id="maximumDigitalZoomChanged"><a name="maximumDigitalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">maximumDigitalZoomChanged</span>(<i>qreal</i>)</h3> <!-- @@@maximumDigitalZoomChanged --> <!-- $$$maximumOpticalZoom[overload1]$$$maximumOpticalZoom --> <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> <!-- @@@maximumOpticalZoom --> <!-- $$$maximumOpticalZoomChanged[overload1]$$$maximumOpticalZoomChangedqreal --> <h3 class="fn" id="maximumOpticalZoomChanged"><a name="maximumOpticalZoomChanged"></a><code>[signal] </code><span class="type">void</span> QCameraZoomControl::<span class="name">maximumOpticalZoomChanged</span>(<i>qreal</i>)</h3> <!-- @@@maximumOpticalZoomChanged --> <!-- $$$requestedDigitalZoom[overload1]$$$requestedDigitalZoom --> <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> <!-- @@@requestedDigitalZoom --> <!-- $$$requestedDigitalZoomChanged[overload1]$$$requestedDigitalZoomChangedqreal --> <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>digitalZoom</i>)</h3> <!-- @@@requestedDigitalZoomChanged --> <!-- $$$requestedOpticalZoom[overload1]$$$requestedOpticalZoom --> <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> <!-- @@@requestedOpticalZoom --> <!-- $$$requestedOpticalZoomChanged[overload1]$$$requestedOpticalZoomChangedqreal --> <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>opticalZoom</i>)</h3> <!-- @@@requestedOpticalZoomChanged --> <!-- $$$zoomTo[overload1]$$$zoomToqrealqreal --> <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> <!-- @@@zoomTo --> </div> <div class="macros"> <h2>Macro Documentation</h2> <!-- $$$QCameraZoomControl_iid[overload1]$$$QCameraZoomControl_iid --> <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 --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>