/**************************************************************************** ** ** Copyright (C) 2012 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef MAINWIDGET_H #define MAINWIDGET_H #include #include #include class Engine; class FrequencySpectrum; class ProgressBar; class Spectrograph; class Waveform; class LevelMeter; class SettingsDialog; class ToneGeneratorDialog; QT_FORWARD_DECLARE_CLASS(QAudioFormat) QT_FORWARD_DECLARE_CLASS(QLabel) QT_FORWARD_DECLARE_CLASS(QPushButton) QT_FORWARD_DECLARE_CLASS(QMenu) QT_FORWARD_DECLARE_CLASS(QAction) /** * 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 audioPositionChanged(qint64 position); void bufferLengthChanged(qint64 length); private slots: void showFileDialog(); void showSettingsDialog(); void showToneGeneratorDialog(); void initializeRecord(); void updateModeMenu(); void updateButtonStates(); private: void createUi(); void createMenus(); void connectUi(); void reset(); enum Mode { NoMode, RecordMode, GenerateToneMode, LoadFileMode }; void setMode(Mode mode); private: Mode m_mode; Engine* m_engine; #ifndef DISABLE_WAVEFORM Waveform* m_waveform; #endif 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