diff options
Diffstat (limited to 'krusader/Panel/krcalcspacedialog.cpp')
| -rw-r--r-- | krusader/Panel/krcalcspacedialog.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/krusader/Panel/krcalcspacedialog.cpp b/krusader/Panel/krcalcspacedialog.cpp new file mode 100644 index 0000000..aced7ed --- /dev/null +++ b/krusader/Panel/krcalcspacedialog.cpp @@ -0,0 +1,187 @@ +/*************************************************************************** + krcalcspacedialog.cpp - description + ------------------- + begin : Fri Jan 2 2004 + copyright : (C) 2004 by Shie Erlich & Rafi Yanai + e-mail : krusader@users.sourceforge.net + web site : http://krusader.sourceforge.net +--------------------------------------------------------------------------- +Description +*************************************************************************** + +A + + db dD d8888b. db db .d8888. .d8b. d8888b. d88888b d8888b. + 88 ,8P' 88 `8D 88 88 88' YP d8' `8b 88 `8D 88' 88 `8D + 88,8P 88oobY' 88 88 `8bo. 88ooo88 88 88 88ooooo 88oobY' + 88`8b 88`8b 88 88 `Y8b. 88~~~88 88 88 88~~~~~ 88`8b + 88 `88. 88 `88. 88b d88 db 8D 88 88 88 .8D 88. 88 `88. + YP YD 88 YD ~Y8888P' `8888Y' YP YP Y8888D' Y88888P 88 YD + + S o u r c e F i l e + +*************************************************************************** +* * +* 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. * +* * +***************************************************************************/ + +// Qt Includes +#include <qtimer.h> +#include <qlayout.h> +#include <qlabel.h> +// KDE Includes +#include <klocale.h> +#include <kcursor.h> +// Krusader Includes +#include "krcalcspacedialog.h" +#include "listpanel.h" +#include "panelfunc.h" +#include "../krusader.h" +#include "../VFS/krpermhandler.h" + +/* --=={ Patch by Heiner <h.eichmann@gmx.de> }==-- */ +KrCalcSpaceDialog::CalcThread::CalcThread(KrCalcSpaceDialog * parent, ListPanel * panel, const QStringList & items) + : m_totalSize(0), m_currentSize(0), m_totalFiles(0), m_totalDirs(0), m_items(items), m_files(panel->func->files()), + m_view(panel->view), m_parent(parent), m_threadInUse(true), m_stop(false) {} + +void KrCalcSpaceDialog::CalcThread::cleanUp(){ + if (m_threadInUse || !finished()) + m_synchronizeUsageAccess.unlock(); + else{ + m_synchronizeUsageAccess.unlock(); // prevents a resource leak + // otherwise: no one needs this instance any more: delete it + delete this; + } +} + +void KrCalcSpaceDialog::CalcThread::deleteInstance(){ + // synchronize to avoid race condition. + m_synchronizeUsageAccess.lock(); + m_threadInUse = false; + cleanUp(); +} + +void KrCalcSpaceDialog::CalcThread::run(){ + if ( !m_items.isEmpty() ) // if something to do: do the calculation + for ( QStringList::ConstIterator it = m_items.begin(); it != m_items.end(); ++it ) + { + m_currentSize = 0; + m_files->vfs_calcSpace( *it, &m_currentSize, &m_totalFiles, &m_totalDirs , & m_stop); + if (m_stop) + break; + KrDetailedViewItem * viewItem = dynamic_cast<KrDetailedViewItem *>(m_view->findItemByName ( *it ) ); + if (viewItem){ + KrCalcSpaceDialog::setDirSize(viewItem, m_currentSize); + //viewItem->repaintItem(); // crash in KrDetailedViewItem::repaintItem(): setPixmap(_view->column(KrDetailedView::Name),KrView::getIcon(_vf)) + } + m_totalSize += m_currentSize; + m_currentSize = 0; + } + // synchronize to avoid race condition. + m_synchronizeUsageAccess.lock(); + cleanUp(); // this does not need the instance any more +} + +void KrCalcSpaceDialog::CalcThread::stop(){ + // cancel was pressed + m_stop = true; +} + +KrCalcSpaceDialog::KrCalcSpaceDialog(QWidget *parent, ListPanel * files, const QStringList & items, bool autoclose) : + KDialogBase(parent, "KrCalcSpaceDialog", true, i18n("Calculate Occupied Space"), Ok|Cancel), + m_autoClose(autoclose), m_canceled(false), m_timerCounter(0){ + // the dialog: The Ok button is hidden until it is needed + showButtonOK(false); + m_thread = new CalcThread(this, files, items); + m_pollTimer = new QTimer(this); + QWidget * mainWidget = new QWidget( this ); + setMainWidget(mainWidget); + QVBoxLayout *topLayout = new QVBoxLayout( mainWidget, 0, spacingHint() ); + + m_label = new QLabel( "", mainWidget, "caption" ); + showResult(); // fill m_label with something usefull + topLayout->addWidget( m_label ); + topLayout->addStretch(10); +} + +void KrCalcSpaceDialog::calculationFinished(){ + // close dialog if auto close is true + if (m_autoClose){ + done(0); + return; + } + // otherwise hide cancel and show ok button + showButtonCancel(false); + showButtonOK(true); + showResult(); // and show final result +} + +/* This timer has two jobs: it polls the thread if it is finished. Polling is + better here as it might finish while the dialog builds up. Secondly it refreshes + the displayed result. + */ +void KrCalcSpaceDialog::timer(){ + // thread finished? + if (m_thread->finished()){ + // close dialog or switch buttons + calculationFinished(); + m_pollTimer->stop(); // stop the polling. No longer needed + return; + } + + // Every 10 pollings (1 second) refresh the displayed result + if (++m_timerCounter > 10){ + m_timerCounter = 0; + showResult(); + } +} + +void KrCalcSpaceDialog::showResult(){ + if (!m_thread) return; + QString msg; + QString fileName = ( ( m_thread->getItems().count() == 1 ) ? ( i18n( "Name: " ) + m_thread->getItems().first() + "\n" ) : QString( "" ) ); + msg = fileName + i18n( "Total occupied space: %1").arg( KIO::convertSize( m_thread->getTotalSize() ) ); + if (m_thread->getTotalSize() >= 1024) + msg += " (" + KRpermHandler::parseSize( m_thread->getTotalSize() ) + "bytes)"; + msg += "\n"; + msg += i18n("in %n directory", "in %n directories", m_thread->getTotalDirs() ); + msg += " "; + msg += i18n("and %n file", "and %n files", m_thread->getTotalFiles() ); + m_label->setText(msg); +} + +void KrCalcSpaceDialog::slotCancel(){ + m_thread->stop(); // notify teh thread to stop + m_canceled = true; // set the cancel flag + KDialogBase::slotCancel(); // close the dialog +} + +KrCalcSpaceDialog::~KrCalcSpaceDialog(){ + CalcThread * tmp = m_thread; + m_thread = 0; // do not access the thread anymore or core dump if smoe piece of code wrongly does + tmp->deleteInstance(); // Notify the thread, that the dialog does not need anymore. +} + +void KrCalcSpaceDialog::exec(){ + m_thread->start(); // start the thread + if (m_autoClose){ // autoclose + // set the cursor to busy mode and wait 3 seconds or until the thread finishes + krApp->setCursor( KCursor::waitCursor() ); + bool result = m_thread->wait(3000); + krApp->setCursor( KCursor::arrowCursor() ); // return the cursor to normal mode + if (result) return;// thread finished: do not show the dialog + showResult(); // fill the invisible dialog with usefull data + } + // prepare and start the poll timer + connect(m_pollTimer, SIGNAL(timeout()), this, SLOT(timer())); + m_pollTimer->start(100); + KDialogBase::exec(); // show the dialog +} +/* --=={ End of patch by Heiner <h.eichmann@gmx.de> }==-- */ + + +#include "krcalcspacedialog.moc" |