<?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>tonegeneratordialog.cpp Example File | 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-multimedia-spectrum-example.html">Spectrum Example</a></td><td >tonegeneratordialog.cpp Example File</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="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">tonegeneratordialog.cpp Example File</h1> <span class="subtitle">multimedia/spectrum/app/tonegeneratordialog.cpp</span> <!-- $$$multimedia/spectrum/app/tonegeneratordialog.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 "tonegeneratordialog.h"</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 <QVBoxLayout></span> <span class="preprocessor">#include <QCheckBox></span> <span class="preprocessor">#include <QSlider></span> <span class="preprocessor">#include <QSpinBox></span> <span class="keyword">const</span> <span class="type">int</span> ToneGeneratorFreqMin <span class="operator">=</span> <span class="number">1</span>; <span class="keyword">const</span> <span class="type">int</span> ToneGeneratorFreqMax <span class="operator">=</span> <span class="number">1000</span>; <span class="keyword">const</span> <span class="type">int</span> ToneGeneratorFreqDefault <span class="operator">=</span> <span class="number">440</span>; <span class="keyword">const</span> <span class="type">int</span> ToneGeneratorAmplitudeDefault <span class="operator">=</span> <span class="number">75</span>; ToneGeneratorDialog<span class="operator">::</span>ToneGeneratorDialog(<span class="type">QWidget</span> <span class="operator">*</span>parent) : <span class="type">QDialog</span>(parent) <span class="operator">,</span> m_toneGeneratorSweepCheckBox(<span class="keyword">new</span> <span class="type">QCheckBox</span>(tr(<span class="string">"Frequency sweep"</span>)<span class="operator">,</span> <span class="keyword">this</span>)) <span class="operator">,</span> m_frequencySweepEnabled(<span class="keyword">true</span>) <span class="operator">,</span> m_toneGeneratorControl(<span class="keyword">new</span> <span class="type">QWidget</span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_toneGeneratorFrequencyControl(<span class="keyword">new</span> <span class="type">QWidget</span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_frequencySlider(<span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="keyword">this</span>)) <span class="operator">,</span> m_frequencySpinBox(<span class="keyword">new</span> <span class="type">QSpinBox</span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_frequency(ToneGeneratorFreqDefault) <span class="operator">,</span> m_amplitudeSlider(<span class="keyword">new</span> <span class="type">QSlider</span>(<span class="type">Qt</span><span class="operator">::</span>Horizontal<span class="operator">,</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>); m_toneGeneratorSweepCheckBox<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); <span class="comment">// Configure tone generator controls</span> m_frequencySlider<span class="operator">-</span><span class="operator">></span>setRange(ToneGeneratorFreqMin<span class="operator">,</span> ToneGeneratorFreqMax); m_frequencySlider<span class="operator">-</span><span class="operator">></span>setValue(ToneGeneratorFreqDefault); m_frequencySpinBox<span class="operator">-</span><span class="operator">></span>setRange(ToneGeneratorFreqMin<span class="operator">,</span> ToneGeneratorFreqMax); m_frequencySpinBox<span class="operator">-</span><span class="operator">></span>setValue(ToneGeneratorFreqDefault); m_amplitudeSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">100</span>); m_amplitudeSlider<span class="operator">-</span><span class="operator">></span>setValue(ToneGeneratorAmplitudeDefault); <span class="comment">// Add widgets to layout</span> <span class="type">QGridLayout</span> <span class="operator">*</span>frequencyControlLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QGridLayout</span>; <span class="type">QLabel</span> <span class="operator">*</span>frequencyLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Frequency (Hz)"</span>)<span class="operator">,</span> <span class="keyword">this</span>); frequencyControlLayout<span class="operator">-</span><span class="operator">></span>addWidget(frequencyLabel<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); frequencyControlLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_frequencySlider<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); frequencyControlLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_frequencySpinBox<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); m_toneGeneratorFrequencyControl<span class="operator">-</span><span class="operator">></span>setLayout(frequencyControlLayout); m_toneGeneratorFrequencyControl<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); <span class="type">QGridLayout</span> <span class="operator">*</span>toneGeneratorLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QGridLayout</span>; <span class="type">QLabel</span> <span class="operator">*</span>amplitudeLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QLabel</span>(tr(<span class="string">"Amplitude"</span>)<span class="operator">,</span> <span class="keyword">this</span>); toneGeneratorLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_toneGeneratorSweepCheckBox<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); toneGeneratorLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_toneGeneratorFrequencyControl<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>); toneGeneratorLayout<span class="operator">-</span><span class="operator">></span>addWidget(amplitudeLabel<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span>); toneGeneratorLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_amplitudeSlider<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); m_toneGeneratorControl<span class="operator">-</span><span class="operator">></span>setLayout(toneGeneratorLayout); m_toneGeneratorControl<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type">QSizePolicy</span><span class="operator">::</span>Preferred<span class="operator">,</span> <span class="type">QSizePolicy</span><span class="operator">::</span>Fixed); dialogLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_toneGeneratorControl); <span class="comment">// Connect</span> connect(m_toneGeneratorSweepCheckBox<span class="operator">,</span> <span class="operator">&</span><span class="type">QCheckBox</span><span class="operator">::</span>toggled<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>ToneGeneratorDialog<span class="operator">::</span>frequencySweepEnabled); connect(m_frequencySlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>valueChanged<span class="operator">,</span> m_frequencySpinBox<span class="operator">,</span> <span class="operator">&</span><span class="type">QSpinBox</span><span class="operator">::</span>setValue); connect(m_frequencySpinBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>of(<span class="operator">&</span><span class="type">QSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span> m_frequencySlider<span class="operator">,</span> <span class="operator">&</span><span class="type">QSlider</span><span class="operator">::</span>setValue); <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> 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> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>ToneGeneratorDialog<span class="operator">::</span>accept); 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> <span class="operator">&</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>ToneGeneratorDialog<span class="operator">::</span>reject); setLayout(dialogLayout); } ToneGeneratorDialog<span class="operator">::</span><span class="operator">~</span>ToneGeneratorDialog() { } bool ToneGeneratorDialog<span class="operator">::</span>isFrequencySweepEnabled() <span class="keyword">const</span> { <span class="keyword">return</span> m_toneGeneratorSweepCheckBox<span class="operator">-</span><span class="operator">></span>isChecked(); } <span class="type">qreal</span> ToneGeneratorDialog<span class="operator">::</span>frequency() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type">qreal</span>(m_frequencySlider<span class="operator">-</span><span class="operator">></span>value()); } <span class="type">qreal</span> ToneGeneratorDialog<span class="operator">::</span>amplitude() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type">qreal</span>(m_amplitudeSlider<span class="operator">-</span><span class="operator">></span>value()) <span class="operator">/</span> <span class="number">100.0</span>; } <span class="type">void</span> ToneGeneratorDialog<span class="operator">::</span>frequencySweepEnabled(bool enabled) { m_frequencySweepEnabled <span class="operator">=</span> enabled; m_toneGeneratorFrequencyControl<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="operator">!</span>enabled); } </pre> </div> <!-- @@@multimedia/spectrum/app/tonegeneratordialog.cpp --> </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>