<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>imagesettings.cpp Example File | Qt Multimedia 5.9</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 5.9</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-multimediawidgets-camera-example.html">Camera Example</a></td><td >imagesettings.cpp Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td>
</tr></table>
</div>
</div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">imagesettings.cpp Example File</h1>
<span class="subtitle">multimediawidgets/camera/imagesettings.cpp</span>
<!-- $$$multimediawidgets/camera/imagesettings.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "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
** "AS IS" 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "imagesettings.h"</span>
<span class="preprocessor">#include "ui_imagesettings.h"</span>
<span class="preprocessor">#include <QComboBox></span>
<span class="preprocessor">#include <QDebug></span>
<span class="preprocessor">#include <QCameraImageCapture></span>
<span class="preprocessor">#include <QMediaService></span>
ImageSettings<span class="operator">::</span>ImageSettings(<span class="type"><a href="qcameraimagecapture.html">QCameraImageCapture</a></span> <span class="operator">*</span>imageCapture<span class="operator">,</span> <span class="type">QWidget</span> <span class="operator">*</span>parent) :
<span class="type">QDialog</span>(parent)<span class="operator">,</span>
ui(<span class="keyword">new</span> Ui<span class="operator">::</span>ImageSettingsUi)<span class="operator">,</span>
imagecapture(imageCapture)
{
ui<span class="operator">-</span><span class="operator">></span>setupUi(<span class="keyword">this</span>);
<span class="comment">//image codecs</span>
ui<span class="operator">-</span><span class="operator">></span>imageCodecBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Default image format"</span>)<span class="operator">,</span> <span class="type">QVariant</span>(<span class="type">QString</span>()));
<span class="keyword">const</span> <span class="type">QStringList</span> supportedImageCodecs <span class="operator">=</span> imagecapture<span class="operator">-</span><span class="operator">></span>supportedImageCodecs();
<span class="keyword">for</span> (<span class="keyword">const</span> <span class="type">QString</span> <span class="operator">&</span>codecName : supportedImageCodecs) {
<span class="type">QString</span> description <span class="operator">=</span> imagecapture<span class="operator">-</span><span class="operator">></span>imageCodecDescription(codecName);
ui<span class="operator">-</span><span class="operator">></span>imageCodecBox<span class="operator">-</span><span class="operator">></span>addItem(codecName <span class="operator">+</span> <span class="string">": "</span> <span class="operator">+</span> description<span class="operator">,</span> <span class="type">QVariant</span>(codecName));
}
ui<span class="operator">-</span><span class="operator">></span>imageQualitySlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="type">int</span>(<span class="type"><a href="qmultimedia.html">QMultimedia</a></span><span class="operator">::</span>VeryHighQuality));
ui<span class="operator">-</span><span class="operator">></span>imageResolutionBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Default Resolution"</span>));
<span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type">QSize</span><span class="operator">></span> supportedResolutions <span class="operator">=</span> imagecapture<span class="operator">-</span><span class="operator">></span>supportedResolutions();
<span class="keyword">for</span> (<span class="keyword">const</span> <span class="type">QSize</span> <span class="operator">&</span>resolution : supportedResolutions) {
ui<span class="operator">-</span><span class="operator">></span>imageResolutionBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="type">QString</span>(<span class="string">"%1x%2"</span>)<span class="operator">.</span>arg(resolution<span class="operator">.</span>width())<span class="operator">.</span>arg(resolution<span class="operator">.</span>height())<span class="operator">,</span>
<span class="type">QVariant</span>(resolution));
}
}
ImageSettings<span class="operator">::</span><span class="operator">~</span>ImageSettings()
{
<span class="keyword">delete</span> ui;
}
<span class="type">void</span> ImageSettings<span class="operator">::</span>changeEvent(<span class="type">QEvent</span> <span class="operator">*</span>e)
{
<span class="type">QDialog</span><span class="operator">::</span>changeEvent(e);
<span class="keyword">switch</span> (e<span class="operator">-</span><span class="operator">></span>type()) {
<span class="keyword">case</span> <span class="type">QEvent</span><span class="operator">::</span>LanguageChange:
ui<span class="operator">-</span><span class="operator">></span>retranslateUi(<span class="keyword">this</span>);
<span class="keyword">break</span>;
<span class="keyword">default</span>:
<span class="keyword">break</span>;
}
}
<span class="type"><a href="qimageencodersettings.html">QImageEncoderSettings</a></span> ImageSettings<span class="operator">::</span>imageSettings() <span class="keyword">const</span>
{
<span class="type"><a href="qimageencodersettings.html">QImageEncoderSettings</a></span> settings <span class="operator">=</span> imagecapture<span class="operator">-</span><span class="operator">></span>encodingSettings();
settings<span class="operator">.</span>setCodec(boxValue(ui<span class="operator">-</span><span class="operator">></span>imageCodecBox)<span class="operator">.</span>toString());
settings<span class="operator">.</span>setQuality(<span class="type"><a href="qmultimedia.html">QMultimedia</a></span><span class="operator">::</span>EncodingQuality(ui<span class="operator">-</span><span class="operator">></span>imageQualitySlider<span class="operator">-</span><span class="operator">></span>value()));
settings<span class="operator">.</span>setResolution(boxValue(ui<span class="operator">-</span><span class="operator">></span>imageResolutionBox)<span class="operator">.</span>toSize());
<span class="keyword">return</span> settings;
}
<span class="type">void</span> ImageSettings<span class="operator">::</span>setImageSettings(<span class="keyword">const</span> <span class="type"><a href="qimageencodersettings.html">QImageEncoderSettings</a></span> <span class="operator">&</span>imageSettings)
{
selectComboBoxItem(ui<span class="operator">-</span><span class="operator">></span>imageCodecBox<span class="operator">,</span> <span class="type">QVariant</span>(imageSettings<span class="operator">.</span>codec()));
selectComboBoxItem(ui<span class="operator">-</span><span class="operator">></span>imageResolutionBox<span class="operator">,</span> <span class="type">QVariant</span>(imageSettings<span class="operator">.</span>resolution()));
ui<span class="operator">-</span><span class="operator">></span>imageQualitySlider<span class="operator">-</span><span class="operator">></span>setValue(imageSettings<span class="operator">.</span>quality());
}
<span class="type">QVariant</span> ImageSettings<span class="operator">::</span>boxValue(<span class="keyword">const</span> <span class="type">QComboBox</span> <span class="operator">*</span>box) <span class="keyword">const</span>
{
<span class="type">int</span> idx <span class="operator">=</span> box<span class="operator">-</span><span class="operator">></span>currentIndex();
<span class="keyword">if</span> (idx <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>)
<span class="keyword">return</span> <span class="type">QVariant</span>();
<span class="keyword">return</span> box<span class="operator">-</span><span class="operator">></span>itemData(idx);
}
<span class="type">void</span> ImageSettings<span class="operator">::</span>selectComboBoxItem(<span class="type">QComboBox</span> <span class="operator">*</span>box<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QVariant</span> <span class="operator">&</span>value)
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> box<span class="operator">-</span><span class="operator">></span>count(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="keyword">if</span> (box<span class="operator">-</span><span class="operator">></span>itemData(i) <span class="operator">=</span><span class="operator">=</span> value) {
box<span class="operator">-</span><span class="operator">></span>setCurrentIndex(i);
<span class="keyword">break</span>;
}
}
}
</pre>
</div>
<!-- @@@multimediawidgets/camera/imagesettings.cpp -->
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2017 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>
