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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">tonegeneratordialog.cpp Example File</h1> <span class="small-subtitle">demos/spectrum/app/tonegeneratordialog.cpp</span> <!-- $$$demos/spectrum/app/tonegeneratordialog.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 Digia Plc and its Subsidiary(-ies) 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"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qdialog.html">QDialog</a></span>(parent) <span class="operator">,</span> m_toneGeneratorSweepCheckBox(<span class="keyword">new</span> <span class="type"><a href="qcheckbox.html">QCheckBox</a></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"><a href="qwidget.html">QWidget</a></span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_toneGeneratorFrequencyControl(<span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>(<span class="keyword">this</span>)) <span class="operator">,</span> m_frequencySlider(<span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="qt.html">Qt</a></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"><a href="qspinbox.html">QSpinBox</a></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"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="keyword">this</span>)) { <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>dialogLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></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"><a href="qscopedpointer.html">QScopedPointer</a></span><span class="operator"><</span><span class="type"><a href="qgridlayout.html">QGridLayout</a></span><span class="operator">></span> frequencyControlLayout(<span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>frequencyLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></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<span class="operator">.</span>data()); frequencyControlLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred to m_toneGeneratorFrequencyControl</span> m_toneGeneratorFrequencyControl<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>); <span class="type"><a href="qscopedpointer.html">QScopedPointer</a></span><span class="operator"><</span><span class="type"><a href="qgridlayout.html">QGridLayout</a></span><span class="operator">></span> toneGeneratorLayout(<span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>amplitudeLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></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<span class="operator">.</span>data()); m_toneGeneratorControl<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); dialogLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_toneGeneratorControl); toneGeneratorLayout<span class="operator">.</span>take(); <span class="comment">// ownership transferred</span> <span class="comment">// Connect</span> CHECKED_CONNECT(m_toneGeneratorSweepCheckBox<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(frequencySweepEnabled(<span class="type">bool</span>))); CHECKED_CONNECT(m_frequencySlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_frequencySpinBox<span class="operator">,</span> SLOT(setValue(<span class="type">int</span>))); CHECKED_CONNECT(m_frequencySpinBox<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_frequencySlider<span class="operator">,</span> SLOT(setValue(<span class="type">int</span>))); <span class="comment">// Add standard buttons to layout</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span> <span class="operator">*</span>buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span>(<span class="keyword">this</span>); buttonBox<span class="operator">-</span><span class="operator">></span>setStandardButtons(<span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>Ok <span class="operator">|</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></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"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></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"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></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); } ToneGeneratorDialog<span class="operator">::</span><span class="operator">~</span>ToneGeneratorDialog() { } <span class="type">bool</span> 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"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ToneGeneratorDialog<span class="operator">::</span>frequency() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>(m_frequencySlider<span class="operator">-</span><span class="operator">></span>value()); } <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ToneGeneratorDialog<span class="operator">::</span>amplitude() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></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(<span class="type">bool</span> 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> <!-- @@@demos/spectrum/app/tonegeneratordialog.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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