Qt 4.8: guitartunerui.h Example File (demos/mobile/guitartuner/src/guitartunerui.h)

Qt Reference Documentation

- Qt 4.8
- ALL VERSIONS

- A
- A
- A
- Print

# guitartunerui.h Example File

demos/mobile/guitartuner/src/guitartunerui.h

     /****************************************************************************
     **
     ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the QtDeclarative module 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."
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #ifndef GUITARTUNERUI_H
     #define GUITARTUNERUI_H

     #include <QWidget>
     #include <QDebug>

     namespace Ui {
         class GuitarTunerUI;
     }

     const qreal FrequencyE = 82.407;
     const qreal FrequencyA = 110.00;
     const qreal FrequencyD = 146.83;
     const qreal FrequencyG = 196.00;
     const qreal FrequencyB = 246.94;
     const qreal FrequencyE2 = 329.63;

     class GuitarTunerUI : public QWidget
     {
         Q_OBJECT

     public:
         explicit GuitarTunerUI(QWidget *parent = 0);
         ~GuitarTunerUI();

         qreal getVolume() const;
         bool getMuteState() const;
         qreal getMicrophoneSensitivity() const;
         bool isInputModeActive() const;
         qreal getFrequency() const;
         int getScaleMaximumValue() const;
         void setMaximumVoiceDifference(int max);
         void setMaximumPrecisionPerNote(int max);

     public slots:
         void toggleSound(bool off);
         void next();
         void prev();
         void changeVolume();
         void toggleInputOrOutput();

         void lowVoice();
         void voiceDifference(qreal difference);
         void correctFrequencyObtained();

     signals:
         void modeChanged(bool isInput);
         void volumeChanged(qreal volume);
         void microphoneSensitivityChanged(qreal sensitivity);
         void muteChanged(bool isMuted);
         void targetFrequencyChanged(qreal targetFrequency);

     protected:
         void changeEvent(QEvent *e);

     private:
         Ui::GuitarTunerUI *ui;
         void changeTone(int newIndex);
         qreal getVolumeFromSoundSlider() const;
         int m_currentToneIndex;
         QString m_currentToneString;
         qreal m_currentToneFrequency;
         void updateFrequencyByToneIndex(int index);
         bool m_outputActive;
         bool m_muted;
         qreal m_outputVolumeLevel;
         qreal m_inputVolumeLevel;
         int m_maximumPrecision;
     };

     #endif // GUITARTUNERUI_H