libkonq Library API Documentation

kivdirectoryoverlay.cc

00001 /* This file is part of the KDE libraries 00002 Copyright (C) 2002 Simon MacMullen 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public License 00015 along with this library; see the file COPYING.LIB. If not, write to 00016 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00017 Boston, MA 02111-1307, USA. 00018 */ 00019 00020 #include <qdict.h> 00021 #include <qpixmap.h> 00022 #include <qpainter.h> 00023 #include <qbitmap.h> 00024 #include <qimage.h> 00025 00026 #include <kfileivi.h> 00027 #include <kfileitem.h> 00028 #include <kapplication.h> 00029 #include <kdirlister.h> 00030 #include <kstandarddirs.h> 00031 #include <kiconloader.h> 00032 #include <konq_settings.h> 00033 #include <klocale.h> 00034 #include <kdebug.h> 00035 00036 #include "kivdirectoryoverlay.h" 00037 00038 KIVDirectoryOverlay::KIVDirectoryOverlay(KFileIVI* directory) 00039 : m_lister(0), m_foundItems(false), 00040 m_containsFolder(false), m_popularIcons(0) 00041 { 00042 if (!m_lister) 00043 { 00044 m_lister = new KDirLister; 00045 m_lister->setAutoErrorHandlingEnabled(false, 0); 00046 connect(m_lister, SIGNAL(completed()), SLOT(slotCompleted())); 00047 connect(m_lister, SIGNAL(newItems( const KFileItemList& )), SLOT(slotNewItems( const KFileItemList& ))); 00048 m_lister->setShowingDotFiles(false); 00049 } 00050 m_directory = directory; 00051 } 00052 00053 KIVDirectoryOverlay::~KIVDirectoryOverlay() 00054 { 00055 if (m_lister) m_lister->stop(); 00056 delete m_lister; 00057 delete m_popularIcons; 00058 } 00059 00060 void KIVDirectoryOverlay::start() 00061 { 00062 if ( m_directory->item()->isReadable() ) { 00063 m_popularIcons = new QDict<int>; 00064 m_popularIcons->setAutoDelete(true); 00065 m_lister->openURL(m_directory->item()->url()); 00066 } else { 00067 emit finished(); 00068 } 00069 } 00070 00071 void KIVDirectoryOverlay::timerEvent(QTimerEvent *) 00072 { 00073 m_lister->stop(); 00074 } 00075 00076 void KIVDirectoryOverlay::slotCompleted() 00077 { 00078 if (!m_popularIcons) return; 00079 00080 // Look through the histogram for the most popular mimetype 00081 QDictIterator<int> currentIcon( (*m_popularIcons) ); 00082 unsigned int best = 0; 00083 unsigned int total = 0; 00084 for ( ; currentIcon.current(); ++currentIcon ) { 00085 unsigned int currentCount = (*currentIcon.current()); 00086 total += currentCount; 00087 if ( best < currentCount ) { 00088 best = currentCount; 00089 m_bestIcon = currentIcon.currentKey(); 00090 } 00091 } 00092 00093 // Only show folder if there's no other candidate. Most folders contain 00094 // folders. We know this. 00095 if ( m_bestIcon.isNull() && m_containsFolder ) { 00096 m_bestIcon = "folder"; 00097 } 00098 00099 if ( best * 2 < total ) { 00100 m_bestIcon = "kmultiple"; 00101 } 00102 00103 if (!m_bestIcon.isNull()) { 00104 m_directory->setOverlay(m_bestIcon); 00105 } 00106 00107 delete m_popularIcons; 00108 m_popularIcons = 0; 00109 00110 emit finished(); 00111 } 00112 00113 void KIVDirectoryOverlay::slotNewItems( const KFileItemList& items ) 00114 { 00115 if ( !m_popularIcons) return; 00116 00117 KFileItemListIterator files( items ); 00118 00119 KFileItem* file; 00120 for ( ; (file = files.current()) != 0; ++files ) { 00121 if ( file -> isFile() ) { 00122 00123 QString iconName = file -> iconName(); 00124 if (!iconName) continue; 00125 00126 int* iconCount = m_popularIcons -> find( file -> iconName() ); 00127 if (!iconCount) { 00128 iconCount = new int(0); 00129 Q_ASSERT(file); 00130 m_popularIcons -> insert(file -> iconName(), iconCount); 00131 } 00132 (*iconCount)++; 00133 } else if ( file -> isDir() ) { 00134 m_containsFolder = true; 00135 } 00136 } 00137 00138 m_foundItems = true; 00139 } 00140 00141 #include "kivdirectoryoverlay.moc"
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This file is part of the documentation for libkonq Library Version 3.3.0.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Fri Aug 13 21:46:59 2004 by doxygen 1.3.8 written by Dimitri van Heesch, © 1997-2003