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/* Gwenview - A simple image viewer for KDE
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Copyright (C) 2000-2002 Aur�lien G�teau
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This class is based on the ImagePreviewJob class from Konqueror.
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Original copyright follows.
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/* This file is part of the KDE project
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Copyright (C) 2000 David Faure <faure@kde.org>
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2000 Carsten Pfeiffer <pfeiffer@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <kfileviewitem.h>
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#include "thumbnailloadjob.moc"
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#define LOG(x) kdDebug() << k_funcinfo << x << endl
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const QString& ThumbnailLoadJob::thumbnailDir() {
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if (!dir.isEmpty()) return dir;
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KGlobal::dirs()->addResourceType("thumbnails","share/thumbnails/");
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dir = QDir::cleanDirPath( KGlobal::dirs()->resourceDirs("thumbnails")[0] );
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ThumbnailLoadJob::ThumbnailLoadJob(const KFileViewItemList* itemList,ThumbnailSize size)
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: KIO::Job(false), mThumbnailSize(size)
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// Look for images and store the items in our todo list
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for (KFileViewItem* item=itemList->getFirst(); item; item=item->next()) {
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if (mItems.isEmpty()) return;
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QString originalDir=QDir::cleanDirPath( mItems.first()->url().directory() );
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// Check if we're already in a cache dir
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// In that case the cache dir will be the original dir
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KGlobal::dirs()->addResourceType("thumbnails","share/thumbnails/");
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QString cacheBaseDir = QDir::cleanDirPath( KGlobal::dirs()->resourceDirs("thumbnails")[0] );
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QString cacheBaseDir = thumbnailDir();
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if ( originalDir.startsWith(cacheBaseDir) ) {
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mCacheDir=originalDir;
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// Generate the thumbnail dir name
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KMD5 md5( QFile::encodeName(originalDir) );
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md5.hexDigest( hash );
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QString thumbPath = QString::fromLatin1( hash, 4 ) + "/" +
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QString::fromLatin1( &hash[4], 4 ) + "/" +
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QString::fromLatin1( &hash[8] ) + "/";
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// Create the thumbnail cache dir
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mCacheDir = locateLocal( "thumbnails", thumbPath + "/" + QString(mThumbnailSize) + "/" );
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LOG("mCacheDir=" << mCacheDir);
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ThumbnailLoadJob::~ThumbnailLoadJob() {
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void ThumbnailLoadJob::start() {
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if (mItems.isEmpty()) {
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LOG("Nothing to do");
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//-Internal--------------------------------------------------------------
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void ThumbnailLoadJob::itemRemoved(const KFileViewItem* item) {
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mItems.removeRef(item);
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if (item == mCurrentItem) {
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subjobs.first()->kill();
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subjobs.removeFirst();
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void ThumbnailLoadJob::determineNextIcon() {
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if (mItems.isEmpty()) {
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LOG("emitting result");
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// First, stat the orig file
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mState = STATE_STATORIG;
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mCurrentItem = mItems.first();
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mCurrentURL = mCurrentItem->url();
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KIO::Job* job = KIO::stat(mCurrentURL,false);
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LOG( "KIO::stat orig " << mCurrentURL.url() );
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mItems.removeFirst();
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void ThumbnailLoadJob::slotResult(KIO::Job * job) {
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ASSERT(subjobs.isEmpty()); // We should have only one job at a time ...
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case STATE_STATORIG: {
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// Could not stat original, drop this one and move on to the next one
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// Get modification time of the original file
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KIO::UDSEntry entry = static_cast<KIO::StatJob*>(job)->statResult();
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KIO::UDSEntry::ConstIterator it= entry.begin();
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for (; it!=entry.end(); it++) {
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if ((*it).m_uds == KIO::UDS_MODIFICATION_TIME) {
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mOriginalTime = (time_t)((*it).m_long);
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// Now stat the thumbnail
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mThumbURL.setPath(mCacheDir + "/" + mCurrentURL.fileName());
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mState = STATE_STATTHUMB;
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KIO::Job * job = KIO::stat(mThumbURL, false);
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LOG("Stat thumb " << mThumbURL.url());
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case STATE_STATTHUMB:
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// Try to load this thumbnail - takes care of determineNextIcon
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if (statResultThumbnail(static_cast < KIO::StatJob * >(job)))
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// Not found or not valid, let's create a thumbnail
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createThumbnail(mCurrentURL.path());
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case STATE_CREATETHUMB:
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// Thumbnail saved, go on
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bool ThumbnailLoadJob::statResultThumbnail(KIO::StatJob * job) {
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// Quit if thumbnail not found
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if (job->error()) return false;
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// Get thumbnail modification time
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KIO::UDSEntry entry = job->statResult();
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KIO::UDSEntry::ConstIterator it = entry.begin();
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time_t thumbnailTime = 0;
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for (; it != entry.end(); it++) {
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if ((*it).m_uds == KIO::UDS_MODIFICATION_TIME) {
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thumbnailTime = (time_t) ((*it).m_long);
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// Quit if thumbnail is older than file
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if (thumbnailTime<mOriginalTime) {
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if (!pix.load(mThumbURL.path())) {
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emit thumbnailLoaded(mCurrentItem,pix);
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void ThumbnailLoadJob::createThumbnail(QString pixPath) {
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mState = STATE_CREATETHUMB;
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thumbURL.setProtocol("thumbnail");
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thumbURL.setPath(pixPath);
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QString sizeStr=QString::number(mThumbnailSize.pixelSize());
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KIO::TransferJob * job = KIO::get(thumbURL, false, false);
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connect(job, SIGNAL(data(KIO::Job *, const QByteArray &)),
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SLOT(slotThumbData(KIO::Job *, const QByteArray &)));
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job->addMetaData("mimeType", mCurrentItem->mimetype());
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job->addMetaData("iconSize", sizeStr);
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job->addMetaData("width",sizeStr);
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job->addMetaData("height",sizeStr);
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job->addMetaData("extent",sizeStr);
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job->addMetaData("plugin","imagethumbnail");
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void ThumbnailLoadJob::slotThumbData(KIO::Job *, const QByteArray& imgData) {
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QPixmap pix(imgData);
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emit thumbnailLoaded(mCurrentItem,pix);
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file.setName(mThumbURL.path());
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if (!file.open(IO_WriteOnly)) return;
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file.writeBlock(imgData.data(), imgData.size());
added
removed
gwenview/thumbnailloadjob.cpp
