Chris@378: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@378: 
Chris@378: /*
Chris@378:     Sonic Visualiser
Chris@378:     An audio file viewer and annotation editor.
Chris@378:     Centre for Digital Music, Queen Mary, University of London.
Chris@378:     This file copyright 2007-2008 QMUL.
Chris@378:     
Chris@378:     This program is free software; you can redistribute it and/or
Chris@378:     modify it under the terms of the GNU General Public License as
Chris@378:     published by the Free Software Foundation; either version 2 of the
Chris@378:     License, or (at your option) any later version.  See the file
Chris@378:     COPYING included with this distribution for more information.
Chris@378: */
Chris@378: 
Chris@378: #include "ProgressDialog.h"
Chris@378: 
Chris@378: #include <QProgressDialog>
Chris@378: #include <QApplication>
Chris@378: #include <QTimer>
Chris@378: 
Chris@378: ProgressDialog::ProgressDialog(QString message, bool cancellable,
Chris@378:                                int timeBeforeShow, QWidget *parent) : 
Chris@378:     m_showTimer(0),
Chris@378:     m_timerElapsed(false)
Chris@378: {
Chris@378:     m_dialog = new QProgressDialog(message, cancellable ? tr("Cancel") : 0,
Chris@378:                                    0, 100, parent);
Chris@378:     if (timeBeforeShow > 0) {
Chris@378:         m_dialog->hide();
Chris@378:         m_showTimer = new QTimer;
Chris@378:         connect(m_showTimer, SIGNAL(timeout()), this, SLOT(showTimerElapsed()));
Chris@378:         m_showTimer->setSingleShot(true);
Chris@378:         m_showTimer->start(timeBeforeShow);
Chris@378:     } else {
Chris@378:         m_dialog->show();
Chris@378:         m_dialog->raise();
Chris@378:         m_timerElapsed = true;
Chris@378:     }
Chris@378: 
Chris@378:     if (cancellable) {
Chris@378:         connect(m_dialog, SIGNAL(canceled()), this, SIGNAL(cancelled()));
Chris@378:     }
Chris@378: }
Chris@378: 
Chris@378: ProgressDialog::~ProgressDialog()
Chris@378: {
Chris@378:     delete m_showTimer;
Chris@378:     delete m_dialog;
Chris@378: }
Chris@378: 
Chris@378: void
Chris@378: ProgressDialog::setMessage(QString text)
Chris@378: {
Chris@378:     m_dialog->setLabelText(text);
Chris@378: }
Chris@378: 
Chris@378: void
Chris@378: ProgressDialog::showTimerElapsed()
Chris@378: {
Chris@378:     m_timerElapsed = true;
Chris@378:     delete m_showTimer;
Chris@378:     m_showTimer = 0;
Chris@378:     if (m_dialog->value() > 0) {
Chris@378:         m_dialog->show();
Chris@378:     }
Chris@378:     qApp->processEvents();
Chris@378: }
Chris@378: 
Chris@378: void
Chris@378: ProgressDialog::setProgress(int percentage)
Chris@378: {
Chris@378:     if (percentage > m_dialog->value()) {
Chris@378: 
Chris@378:         m_dialog->setValue(percentage);
Chris@378: 
Chris@378:         if (percentage >= 100) {
Chris@378:             delete m_showTimer;
Chris@378:             m_showTimer = 0;
Chris@378:             m_dialog->hide();
Chris@378:         } else if (m_timerElapsed && !m_dialog->isVisible()) {
Chris@378:             m_dialog->show();
Chris@378:             m_dialog->raise();
Chris@378:         }
Chris@378: 
Chris@378:         qApp->processEvents();
Chris@378:     }
Chris@378: }
Chris@378: