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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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 Nokia Corporation 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 MAINWIDGET_H
#define MAINWIDGET_H
#include <QWidget>
#include <QIcon>
#include <QtMultimedia/qaudio.h>
class Engine;
class FrequencySpectrum;
class ProgressBar;
class Spectrograph;
class Waveform;
class LevelMeter;
class SettingsDialog;
class ToneGeneratorDialog;
QT_BEGIN_NAMESPACE
class QAudioFormat;
class QLabel;
class QPushButton;
class QMenu;
class QAction;
QT_END_NAMESPACE
/**
* Main application widget, responsible for connecting the various UI
* elements to the Engine.
*/
class MainWidget : public QWidget {
Q_OBJECT
public:
MainWidget(QWidget *parent = 0);
~MainWidget();
// QObject
void timerEvent(QTimerEvent *event);
public slots:
void stateChanged(QAudio::Mode mode, QAudio::State state);
void formatChanged(const QAudioFormat &format);
void spectrumChanged(qint64 position, qint64 length,
const FrequencySpectrum &spectrum);
void infoMessage(const QString &message, int timeoutMs);
void errorMessage(const QString &heading, const QString &detail);
void positionChanged(qint64 position);
void bufferDurationChanged(qint64 duration);
private slots:
void showFileDialog();
void showSettingsDialog();
void showToneGeneratorDialog();
void initializeRecord();
void dataDurationChanged(qint64 duration);
private:
void createUi();
void createMenus();
void connectUi();
void updateButtonStates();
void reset();
enum Mode {
NoMode,
RecordMode,
GenerateToneMode,
LoadFileMode
};
void setMode(Mode mode);
private:
Mode m_mode;
Engine* m_engine;
Waveform* m_waveform;
ProgressBar* m_progressBar;
Spectrograph* m_spectrograph;
LevelMeter* m_levelMeter;
QPushButton* m_modeButton;
QPushButton* m_recordButton;
QIcon m_recordIcon;
QPushButton* m_pauseButton;
QIcon m_pauseIcon;
QPushButton* m_playButton;
QIcon m_playIcon;
QPushButton* m_settingsButton;
QIcon m_settingsIcon;
QLabel* m_infoMessage;
int m_infoMessageTimerId;
SettingsDialog* m_settingsDialog;
ToneGeneratorDialog* m_toneGeneratorDialog;
QMenu* m_modeMenu;
QAction* m_loadFileAction;
QAction* m_generateToneAction;
QAction* m_recordAction;
};
#endif // MAINWIDGET_H
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