Files
qt4-x11/doc/html/demos-mobile-qcamera-cameraexample-h.html
2025-08-24 20:55:26 +08:00

356 lines
19 KiB
HTML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Qt 4.8: cameraexample.h Example File (demos/mobile/qcamera/cameraexample.h)</title>
<link rel="stylesheet" type="text/css" href="style/style.css" />
<script src="scripts/jquery.js" type="text/javascript"></script>
<script src="scripts/functions.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="style/superfish.css" />
<link rel="stylesheet" type="text/css" href="style/narrow.css" />
<!--[if IE]>
<meta name="MSSmartTagsPreventParsing" content="true">
<meta http-equiv="imagetoolbar" content="no">
<![endif]-->
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie6.css">
<![endif]-->
<!--[if IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie7.css">
<![endif]-->
<!--[if IE 8]>
<link rel="stylesheet" type="text/css" href="style/style_ie8.css">
<![endif]-->
<script src="scripts/superfish.js" type="text/javascript"></script>
<script src="scripts/narrow.js" type="text/javascript"></script>
</head>
<body class="" onload="CheckEmptyAndLoadList();">
<div class="header" id="qtdocheader">
<div class="content">
<div id="nav-logo">
<a href="index.html">Home</a></div>
<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
<div id="narrowsearch"></div>
<div id="nav-topright">
<ul>
<li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li>
<li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li>
<li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/">
DOC</a></li>
<li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li>
</ul>
</div>
<div id="shortCut">
<ul>
<li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li>
<li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS </a></li>
</ul>
</div>
<ul class="sf-menu" id="narrowmenu">
<li><a href="#">API Lookup</a>
<ul>
<li><a href="classes.html">Class index</a></li>
<li><a href="functions.html">Function index</a></li>
<li><a href="modules.html">Modules</a></li>
<li><a href="namespaces.html">Namespaces</a></li>
<li><a href="qtglobal.html">Global Declarations</a></li>
<li><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</li>
<li><a href="#">Qt Topics</a>
<ul>
<li><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li><a href="supported-platforms.html">Supported Platforms</a></li>
<li><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</li>
<li><a href="#">Examples</a>
<ul>
<li><a href="all-examples.html">Examples</a></li>
<li><a href="tutorials.html">Tutorials</a></li>
<li><a href="demos.html">Demos</a></li>
<li><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="wrapper">
<div class="hd">
<span></span>
</div>
<div class="bd group">
<div class="sidebar">
<div class="searchlabel">
Search index:</div>
<div class="search" id="sidebarsearch">
<form id="qtdocsearch" action="" onsubmit="return false;">
<fieldset>
<input type="text" name="searchstring" id="pageType" value="" />
<div id="resultdialog">
<a href="#" id="resultclose">Close</a>
<p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p>
<p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span>&nbsp;results:</p>
<ul id="resultlist" class="all">
</ul>
</div>
</fieldset>
</form>
</div>
<div class="box first bottombar" id="lookup">
<h2 title="API Lookup"><span></span>
API Lookup</h2>
<div id="list001" class="list">
<ul id="ul001" >
<li class="defaultLink"><a href="classes.html">Class index</a></li>
<li class="defaultLink"><a href="functions.html">Function index</a></li>
<li class="defaultLink"><a href="modules.html">Modules</a></li>
<li class="defaultLink"><a href="namespaces.html">Namespaces</a></li>
<li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li>
<li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</div>
</div>
<div class="box bottombar" id="topics">
<h2 title="Qt Topics"><span></span>
Qt Topics</h2>
<div id="list002" class="list">
<ul id="ul002" >
<li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li class="defaultLink"><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li>
<li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</div>
</div>
<div class="box" id="examples">
<h2 title="Examples"><span></span>
Examples</h2>
<div id="list003" class="list">
<ul id="ul003">
<li class="defaultLink"><a href="all-examples.html">Examples</a></li>
<li class="defaultLink"><a href="tutorials.html">Tutorials</a></li>
<li class="defaultLink"><a href="demos.html">Demos</a></li>
<li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</div>
</div>
</div>
<div class="wrap">
<div class="toolbar">
<div class="breadcrumb toolblock">
<ul>
<li class="first"><a href="index.html">Home</a></li>
<!-- Breadcrumbs go here -->
</ul>
</div>
<div class="toolbuttons toolblock">
<ul>
<li id="smallA" class="t_button">A</li>
<li id="medA" class="t_button active">A</li>
<li id="bigA" class="t_button">A</li>
<li id="print" class="t_button"><a href="javascript:this.print();">
<span>Print</span></a></li>
</ul>
</div>
</div>
<div class="content mainContent">
<h1 class="title">cameraexample.h Example File</h1>
<span class="small-subtitle">demos/mobile/qcamera/cameraexample.h</span>
<!-- $$$demos/mobile/qcamera/cameraexample.h-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#ifndef QCAMERAEXAMPLE_H</span>
<span class="preprocessor">#define QCAMERAEXAMPLE_H</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="comment">// Multimedia API in QtMobility API</span>
<span class="comment">// Unlike the other APIs in Qt Mobility,</span>
<span class="comment">// the Multimedia API is not in the QtMobility namespace &quot;QTM_USE_NAMESPACE&quot;</span>
<span class="preprocessor">#include &lt;QCamera&gt;</span>
<span class="preprocessor">#include &lt;QCameraImageCapture&gt;</span>
<span class="comment">// QtMobility API</span>
<span class="preprocessor">#include &lt;QSystemScreenSaver&gt;</span>
QTM_USE_NAMESPACE
<span class="preprocessor">#include &lt;QAbstractVideoSurface&gt;</span>
<span class="preprocessor">#include &lt;QVideoRendererControl&gt;</span>
<span class="preprocessor">#include &lt;QVideoSurfaceFormat&gt;</span>
<span class="comment">/*****************************************************************************
* MyVideoSurface
*/</span>
<span class="keyword">class</span> VideoIF
{
<span class="keyword">public</span>:
<span class="keyword">virtual</span> <span class="type">void</span> updateVideo() <span class="operator">=</span> <span class="number">0</span>;
};
<span class="keyword">class</span> MyVideoSurface: <span class="keyword">public</span> <span class="type"><a href="qabstractvideosurface.html">QAbstractVideoSurface</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
MyVideoSurface(<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> widget<span class="operator">,</span> VideoIF<span class="operator">*</span> target<span class="operator">,</span> <span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span> parent <span class="operator">=</span> <span class="number">0</span>);
<span class="operator">~</span>MyVideoSurface();
<span class="type">bool</span> start(<span class="keyword">const</span> <span class="type"><a href="qvideosurfaceformat.html">QVideoSurfaceFormat</a></span> <span class="operator">&amp;</span>format);
<span class="type">bool</span> present(<span class="keyword">const</span> <span class="type"><a href="qvideoframe.html">QVideoFrame</a></span> <span class="operator">&amp;</span>frame);
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qvideoframe.html">QVideoFrame</a></span><span class="operator">::</span>PixelFormat<span class="operator">&gt;</span> supportedPixelFormats(
<span class="type"><a href="qabstractvideobuffer.html">QAbstractVideoBuffer</a></span><span class="operator">::</span>HandleType handleType <span class="operator">=</span> <span class="type"><a href="qabstractvideobuffer.html">QAbstractVideoBuffer</a></span><span class="operator">::</span>NoHandle) <span class="keyword">const</span>;
<span class="type">void</span> paint(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">*</span>);
<span class="keyword">private</span>:
<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> m_targetWidget;
VideoIF<span class="operator">*</span> m_target;
<span class="type"><a href="qvideoframe.html">QVideoFrame</a></span> m_frame;
<span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format m_imageFormat;
<span class="type"><a href="qvideosurfaceformat.html">QVideoSurfaceFormat</a></span> m_videoFormat;
};
<span class="comment">/*****************************************************************************
* CameraExample
*/</span>
<span class="keyword">class</span> Message;
<span class="keyword">class</span> ContactsDialog;
<span class="keyword">class</span> Button;
<span class="keyword">class</span> BusinessCardHandling;
<span class="keyword">class</span> CameraExample: <span class="keyword">public</span> <span class="type"><a href="qmainwindow.html">QMainWindow</a></span><span class="operator">,</span> <span class="keyword">public</span> VideoIF
{
Q_OBJECT
<span class="keyword">public</span>:
CameraExample(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
<span class="operator">~</span>CameraExample();
<span class="type">void</span> paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span><span class="operator">*</span>);
<span class="type">void</span> mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>);
<span class="type">void</span> updateVideo();
<span class="keyword">public</span> <span class="keyword">slots</span>:
<span class="type">void</span> enableCamera();
<span class="type">void</span> lockStatusChanged(<span class="type">QCamera</span><span class="operator">::</span>LockStatus status<span class="operator">,</span> <span class="type">QCamera</span><span class="operator">::</span>LockChangeReason reason);
<span class="type">void</span> searchAndLock();
<span class="type">void</span> captureImage();
<span class="type">void</span> imageCaptured(<span class="type">int</span> id<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qimage.html">QImage</a></span> <span class="operator">&amp;</span>preview);
<span class="type">void</span> error(<span class="type">QCamera</span><span class="operator">::</span>Error);
<span class="type">void</span> openContactsDlg();
<span class="type">void</span> contactSelected(<span class="type"><a href="qstring.html">QString</a></span> phoneNumber);
<span class="type">void</span> messageStateChanged(<span class="type">int</span> error);
<span class="type">void</span> messageReceived(<span class="type"><a href="qstring.html">QString</a></span> phoneNumber<span class="operator">,</span> <span class="type"><a href="qstring.html">QString</a></span> filename<span class="operator">,</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span> pixmap);
<span class="type">void</span> sendMMS();
<span class="keyword">private</span>:
<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> m_videoWidget;
<span class="type">QCamera</span><span class="operator">*</span> m_camera;
<span class="type">QCameraImageCapture</span><span class="operator">*</span> m_stillImageCapture;
<span class="type"><a href="qstackedwidget.html">QStackedWidget</a></span><span class="operator">*</span> m_stackedWidget;
Button<span class="operator">*</span> m_exit;
Button<span class="operator">*</span> m_cameraBtn;
Button<span class="operator">*</span> m_mms;
<span class="type"><a href="qimage.html">QImage</a></span> m_capturedImage;
<span class="type"><a href="qstring.html">QString</a></span> m_imageName;
<span class="type"><a href="qstring.html">QString</a></span> m_focusMessage;
<span class="type">bool</span> m_focusing;
<span class="type"><a href="qstring.html">QString</a></span> m_phoneNumber;
Message<span class="operator">*</span> m_message;
<span class="type"><a href="qpointer.html">QPointer</a></span><span class="operator">&lt;</span>ContactsDialog<span class="operator">&gt;</span> m_contactsDialog;
BusinessCardHandling<span class="operator">*</span> m_businessCardHandling;
<span class="type">bool</span> pictureCaptured;
<span class="type">bool</span> showViewFinder;
MyVideoSurface<span class="operator">*</span> m_myVideoSurface;
<span class="type">QSystemScreenSaver</span><span class="operator">*</span> m_systemScreenSaver;
};
<span class="preprocessor">#endif // QCAMERA_H</span></pre>
</div>
<!-- @@@demos/mobile/qcamera/cameraexample.h -->
</div>
</div>
</div>
<div class="ft">
<span></span>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">&copy;</acronym> 2015 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.</p>
<br />
<p>
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.</p>
<p>
Documentation sources may be obtained from <a href="http://www.qt-project.org">
www.qt-project.org</a>.</p>
<br />
<p>
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. <a title="Privacy Policy"
href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
</div>
<script src="scripts/functions.js" type="text/javascript"></script>
</body>
</html>