Mercurial > hg > svgui
view widgets/ProgressDialog.cpp @ 1363:bbeffb29bf09
Fix inconsistency between centre frame actually set and centre frame notified as set, which caused the start frame location to creep out of place gradually as you page through
author | Chris Cannam |
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date | Tue, 30 Oct 2018 14:00:20 +0000 |
parents | 05d12869043e |
children | c8a6fd3f9dff |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2007-2008 QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #include "ProgressDialog.h" #include <QProgressDialog> #include <QApplication> #include <QTimer> ProgressDialog::ProgressDialog(QString message, bool cancellable, int timeBeforeShow, QWidget *parent, Qt::WindowModality modality) : m_showTimer(0), m_timerElapsed(false), m_cancelled(false) { m_dialog = new QProgressDialog(message, cancellable ? tr("Cancel") : 0, 0, 100, parent); m_dialog->setWindowModality(modality); if (timeBeforeShow > 0) { m_dialog->hide(); m_showTimer = new QTimer; connect(m_showTimer, SIGNAL(timeout()), this, SLOT(showTimerElapsed())); m_showTimer->setSingleShot(true); m_showTimer->start(timeBeforeShow); } else { m_dialog->show(); m_dialog->raise(); m_timerElapsed = true; } if (cancellable) { connect(m_dialog, SIGNAL(canceled()), this, SLOT(canceled())); } } ProgressDialog::~ProgressDialog() { delete m_showTimer; delete m_dialog; } bool ProgressDialog::isDefinite() const { return (m_dialog->maximum() > 0); } void ProgressDialog::setDefinite(bool definite) { if (definite) m_dialog->setMaximum(100); else m_dialog->setMaximum(0); } void ProgressDialog::setMessage(QString text) { m_dialog->setLabelText(text); } void ProgressDialog::canceled() { m_cancelled = true; emit cancelled(); } bool ProgressDialog::wasCancelled() const { return m_cancelled; } void ProgressDialog::showTimerElapsed() { m_timerElapsed = true; if (m_dialog->value() > 0) { emit showing(); m_dialog->show(); } qApp->processEvents(); } void ProgressDialog::setProgress(int percentage) { if (percentage > m_dialog->value()) { if (percentage >= 100 && isDefinite()) { m_dialog->hide(); } else if (m_timerElapsed && !m_dialog->isVisible()) { emit showing(); m_dialog->show(); m_dialog->raise(); } m_dialog->setValue(percentage); // processes event loop when modal if (!m_dialog->isModal()) qApp->processEvents(); } }