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/* ============================================================
*
* This file is a part of kipi-plugins project
* http://www.kipi-plugins.org
*
* Date : 2007-11-11
* Description : a kipi plugin to slide images.
*
* Copyright (C) 2007 by Valerio Fuoglio <valerio dot fuoglio at gmail dot com>
*
* 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, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ============================================================ */
// QT includes
#include <tqimage.h>
#include <tqwmatrix.h>
#include <tqpainter.h>
#include <tqvaluelist.h>
// KDE includes
#include <kdebug.h>
// Local includes
#include "slideshowloader.h"
namespace KIPISlideShowPlugin
{
LoadThread::LoadThread(LoadedImages* loadedImages, TQMutex* imageLock, const KURL path,
const int angle, int width, int height) {
m_path = path;
m_angle = angle;
m_swidth = width;
m_sheight = height;
m_imageLock = imageLock;
m_loadedImages = loadedImages;
}
LoadThread::~LoadThread() {
}
void LoadThread::run() {
TQImage newImage(m_path.path());
// Rotate according to angle
if ( m_angle != 0 )
{
TQWMatrix matrix;
matrix.rotate((double)m_angle);
newImage.xForm( matrix );
}
newImage = TQImage(newImage.smoothScale(m_swidth, m_sheight, TQ_ScaleMin));
m_imageLock->lock();
m_loadedImages->insert(m_path, newImage);
m_imageLock->unlock();
}
// -----------------------------------------------------------------------------------------
SlideShowLoader::SlideShowLoader(FileList &pathList, uint cacheSize, int width, int height, int beginAtIndex) {
m_currIndex = beginAtIndex;
m_cacheSize = cacheSize;
m_pathList = pathList;
m_swidth = width;
m_sheight = height;
m_loadingThreads = new LoadingThreads();
m_loadedImages = new LoadedImages();
m_imageLock = new TQMutex();
m_threadLock = new TQMutex();
for ( uint i = 0; i < uint(m_cacheSize/2) && i < uint(m_pathList.count()); i++ ) {
LoadThread* newThread = new LoadThread(m_loadedImages, m_imageLock, KURL(m_pathList[i].first),
m_pathList[i].second, m_swidth, m_sheight);
m_threadLock->lock();
m_loadingThreads->insert(m_pathList[i].first, newThread);
newThread->start();
m_threadLock->unlock();
}
for ( uint i = 0; i < ( m_cacheSize%2 == 0? (m_cacheSize%2) : uint(m_cacheSize/2)+1); i++ ) {
int toLoad = (m_currIndex - i)%m_pathList.count();
LoadThread* newThread = new LoadThread(m_loadedImages, m_imageLock, KURL(m_pathList[toLoad].first),
m_pathList[toLoad].second, m_swidth, m_sheight);
m_threadLock->lock();
m_loadingThreads->insert(m_pathList[toLoad].first, newThread);
newThread->start();
m_threadLock->unlock();
}
}
SlideShowLoader::~SlideShowLoader() {
m_threadLock->lock();
LoadingThreads::Iterator it;
for ( it = m_loadingThreads->begin(); it != m_loadingThreads->end(); ++it ) {
it.data()->wait();
delete it.data();
m_loadingThreads->remove(it);
}
m_threadLock->unlock();
delete(m_loadingThreads);
delete(m_loadedImages);
delete(m_imageLock);
delete(m_threadLock);
}
void SlideShowLoader::next() {
int victim = (m_currIndex - ( m_cacheSize%2 == 0 ? (m_cacheSize/2)-1 : int(m_cacheSize/2))) % m_pathList.count();
int newBorn = (m_currIndex + int(m_cacheSize/2) + 1) % m_pathList.count();
if ( victim == newBorn ) return;
m_threadLock->lock();
m_imageLock->lock();
m_loadingThreads->remove(m_pathList[victim].first);
m_loadedImages->remove(m_pathList[victim].first);
m_imageLock->unlock();
m_threadLock->unlock();
LoadThread* newThread = new LoadThread(m_loadedImages, m_imageLock, KURL(m_pathList[newBorn].first),
m_pathList[newBorn].second, m_swidth, m_sheight);
m_threadLock->lock();
m_loadingThreads->insert(m_pathList[newBorn].first, newThread);
newThread->start();
m_threadLock->unlock();
m_currIndex = (m_currIndex + 1) % m_pathList.count();
}
void SlideShowLoader::prev() {
int victim = (m_currIndex + int(m_currIndex/2)) % m_pathList.count();
int newBorn = (m_currIndex - ( m_cacheSize&2 == 0 ? (m_cacheSize/2) : int(m_cacheSize/2)+1)) % m_pathList.count();
if ( victim == newBorn ) return;
m_threadLock->lock();
m_imageLock->lock();
m_loadingThreads->remove(m_pathList[victim].first);
m_loadedImages->remove(m_pathList[victim].first);
m_imageLock->unlock();
m_threadLock->unlock();
LoadThread* newThread = new LoadThread(m_loadedImages, m_imageLock, KURL(m_pathList[newBorn].first),
m_pathList[newBorn].second, m_swidth, m_sheight);
m_threadLock->lock();
m_loadingThreads->insert(m_pathList[newBorn].first, newThread);
newThread->start();
m_threadLock->unlock();
m_currIndex = (m_currIndex - 1) % m_pathList.count();
}
TQImage SlideShowLoader::getCurrent() {
checkIsIn(m_currIndex);
m_imageLock->lock();
TQImage returned = (*m_loadedImages)[m_pathList[m_currIndex].first];
m_imageLock->unlock();
return returned;
}
TQString SlideShowLoader::currFileName()
{
return KURL(m_pathList[m_currIndex].first).fileName();
}
KURL SlideShowLoader::currPath()
{
return m_pathList[m_currIndex].first;
}
void SlideShowLoader::checkIsIn(int index)
{
m_threadLock->lock();
if (m_loadingThreads->contains(m_pathList[index].first))
{
if ( (*m_loadingThreads)[m_pathList[index].first]->running() )
(*m_loadingThreads)[m_pathList[index].first]->wait();
m_threadLock->unlock();
}
else
{
LoadThread* newThread = new LoadThread(m_loadedImages, m_imageLock, KURL(m_pathList[index].first),
m_pathList[index].second, m_swidth, m_sheight);
m_loadingThreads->insert(m_pathList[index].first,newThread);
newThread->start();
(*m_loadingThreads)[m_pathList[index].first]->wait();
m_threadLock->unlock();
}
}
} // NameSpace KIPISlideShowPlugin
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