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<h1 class="title">settingsdialog.cpp Example File</h1>
<span class="subtitle">multimedia/spectrum/app/settingsdialog.cpp</span>
<!-- $$$multimedia/spectrum/app/settingsdialog.cpp-description -->
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<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
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** This file is part of the examples of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:BSD$
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<span class="preprocessor">#include "settingsdialog.h"</span>
<span class="preprocessor">#include <QCheckBox></span>
<span class="preprocessor">#include <QComboBox></span>
<span class="preprocessor">#include <QDialogButtonBox></span>
<span class="preprocessor">#include <QLabel></span>
<span class="preprocessor">#include <QPushButton></span>
<span class="preprocessor">#include <QSlider></span>
<span class="preprocessor">#include <QSpinBox></span>
<span class="preprocessor">#include <QVBoxLayout></span>
SettingsDialog<span class="operator">::</span>SettingsDialog(
<span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span> <span class="operator">&</span>availableInputDevices<span class="operator">,</span>
<span class="keyword">const</span> <span class="type">QList</span><span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span> <span class="operator">&</span>availableOutputDevices<span class="operator">,</span>
<span class="type">QWidget</span> <span class="operator">*</span>parent)
: <span class="type">QDialog</span>(parent)
<span class="operator">,</span> m_windowFunction(DefaultWindowFunction)
<span class="operator">,</span> m_inputDeviceComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>))
<span class="operator">,</span> m_outputDeviceComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>))
<span class="operator">,</span> m_windowFunctionComboBox(<span class="keyword">new</span> <span class="type">QComboBox</span>(<span class="keyword">this</span>))
{
<span class="type">QVBoxLayout</span> <span class="operator">*</span>dialogLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVBoxLayout</span>(<span class="keyword">this</span>);
<span class="comment">// Populate combo boxes</span>
<span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span> device;
foreach (device<span class="operator">,</span> availableInputDevices)
m_inputDeviceComboBox<span class="operator">-</span><span class="operator">></span>addItem(device<span class="operator">.</span>deviceName()<span class="operator">,</span>
<span class="type">QVariant</span><span class="operator">::</span>fromValue(device));
foreach (device<span class="operator">,</span> availableOutputDevices)
m_outputDeviceComboBox<span class="operator">-</span><span class="operator">></span>addItem(device<span class="operator">.</span>deviceName()<span class="operator">,</span>
<span class="type">QVariant</span><span class="operator">::</span>fromValue(device));
m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"None"</span>)<span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(<span class="type">int</span>(NoWindow)));
m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>addItem(<span class="string">"Hann"</span><span class="operator">,</span> <span class="type">QVariant</span><span class="operator">::</span>fromValue(<span class="type">int</span>(HannWindow)));
m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>setCurrentIndex(m_windowFunction);
<span class="comment">// Initialize default devices</span>
<span class="keyword">if</span> (<span class="operator">!</span>availableInputDevices<span class="operator">.</span>empty())
m_inputDevice <span class="operator">=</span> availableInputDevices<span class="operator">.</span>front();
<span class="keyword">if</span> (<span class="operator">!</span>availableOutputDevices<span class="operator">.</span>empty())
m_outputDevice <span class="operator">=</span> availableOutputDevices<span class="operator">.</span>front();
<span class="comment">// Add widgets to layout</span>
<span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> inputDeviceLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>);
<span class="type">QLabel</span> <span class="operator">*</span>inputDeviceLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Input device"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
inputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(inputDeviceLabel);
inputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_inputDeviceComboBox);
dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(inputDeviceLayout<span class="operator">.</span>data());
inputDeviceLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span>
<span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> outputDeviceLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>);
<span class="type">QLabel</span> <span class="operator">*</span>outputDeviceLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Output device"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
outputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(outputDeviceLabel);
outputDeviceLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_outputDeviceComboBox);
dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(outputDeviceLayout<span class="operator">.</span>data());
outputDeviceLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span>
<span class="type">QScopedPointer</span><span class="operator"><</span><span class="type">QHBoxLayout</span><span class="operator">></span> windowFunctionLayout(<span class="keyword">new</span> <span class="type">QHBoxLayout</span>);
<span class="type">QLabel</span> <span class="operator">*</span>windowFunctionLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Window function"</span>)<span class="operator">,</span> <span class="keyword">this</span>);
windowFunctionLayout<span class="operator">-</span><span class="operator">></span>addWidget(windowFunctionLabel);
windowFunctionLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_windowFunctionComboBox);
dialogLayout<span class="operator">-</span><span class="operator">></span>addLayout(windowFunctionLayout<span class="operator">.</span>data());
windowFunctionLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to dialogLayout</span>
<span class="comment">// Connect</span>
CHECKED_CONNECT(m_inputDeviceComboBox<span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(inputDeviceChanged(<span class="type">int</span>)));
CHECKED_CONNECT(m_outputDeviceComboBox<span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(outputDeviceChanged(<span class="type">int</span>)));
CHECKED_CONNECT(m_windowFunctionComboBox<span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(windowFunctionChanged(<span class="type">int</span>)));
<span class="comment">// Add standard buttons to layout</span>
<span class="type">QDialogButtonBox</span> <span class="operator">*</span>buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDialogButtonBox</span>(<span class="keyword">this</span>);
buttonBox<span class="operator">-</span><span class="operator">></span>setStandardButtons(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Ok <span class="operator">|</span> <span class="type">QDialogButtonBox</span><span class="operator">::</span>Cancel);
dialogLayout<span class="operator">-</span><span class="operator">></span>addWidget(buttonBox);
<span class="comment">// Connect standard buttons</span>
CHECKED_CONNECT(buttonBox<span class="operator">-</span><span class="operator">></span>button(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Ok)<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(accept()));
CHECKED_CONNECT(buttonBox<span class="operator">-</span><span class="operator">></span>button(<span class="type">QDialogButtonBox</span><span class="operator">::</span>Cancel)<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(reject()));
setLayout(dialogLayout);
}
SettingsDialog<span class="operator">::</span><span class="operator">~</span>SettingsDialog()
{
}
<span class="type">void</span> SettingsDialog<span class="operator">::</span>windowFunctionChanged(<span class="type">int</span> index)
{
m_windowFunction <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span>WindowFunction<span class="operator">></span>(
m_windowFunctionComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type">int</span><span class="operator">></span>());
}
<span class="type">void</span> SettingsDialog<span class="operator">::</span>inputDeviceChanged(<span class="type">int</span> index)
{
m_inputDevice <span class="operator">=</span> m_inputDeviceComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span>();
}
<span class="type">void</span> SettingsDialog<span class="operator">::</span>outputDeviceChanged(<span class="type">int</span> index)
{
m_outputDevice <span class="operator">=</span> m_outputDeviceComboBox<span class="operator">-</span><span class="operator">></span>itemData(index)<span class="operator">.</span>value<span class="operator"><</span><span class="type"><a href="qaudiodeviceinfo.html">QAudioDeviceInfo</a></span><span class="operator">></span>();
}
</pre>
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<!-- @@@multimedia/spectrum/app/settingsdialog.cpp -->
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