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#include "FenPrincipale.h"
#include <qtconcurrentmap.h>
QImage scale(const QString &name)
{
QImage image(name);
return image.scaled(100, 100,Qt::KeepAspectRatio);
}
void FenPrincipale::traitementImages()
{
QTimer::singleShot(0 , this , SLOT( charger() ));
miniLayout = new QHBoxLayout;
QGroupBox *groupMiniatures = new QGroupBox("Miniatures:");
groupMiniatures->setLayout(miniLayout);
imageGrandeLayout = new QHBoxLayout;
QGroupBox *groupImageGrande = new QGroupBox("Image:");
groupImageGrande->setLayout(imageGrandeLayout);
QLabel *metaData = new QLabel;
QHBoxLayout *metaDataLayout = new QHBoxLayout;
metaDataLayout->addWidget(metaData);
QGroupBox *groupMetaData = new QGroupBox("Métadonnées:");
groupMetaData->setLayout(metaDataLayout);
QGridLayout *triLayout = new QGridLayout;
triLayout->addWidget(groupMetaData,0,0,1,1);
triLayout->addWidget(groupImageGrande,0,1,1,1);
triLayout->addWidget(groupMiniatures,1,0,1,2);
QWidget *w = new QWidget;
w->setLayout(triLayout);
mainLayout->addWidget(w);
}
void FenPrincipale::charger()
{
/*recupere un repertoire*/
QString s = QFileDialog::getExistingDirectory(this);
if(s.isEmpty()) return;
QDir imageDir(s);
QStringList fileFilter;
/*recupere toute les nom d'image*/
fileFilter << "*.png" << "*.jpg" <<"*.gif" << "*.bmp" << "*.ppm" << "*.pgm";
QStringList lImage = imageDir.entryList(fileFilter,QDir::Files);
/*ajoute le path des images*/
for(int i=0;i<lImage.size();++i)
{
lImage[i] = imageDir.absolutePath() + "/" + lImage[i];
}
pathImages = new QStringList;
pathImages = &lImage;
/*dialog avec bar de progression*/
QProgressDialog dialog
(
QString("Progression utilisant %1 thread(s)...").arg(QThread::idealThreadCount()),
"Stop",
0,100
);
/*futurewatcher recuperant l'avancement et le resultat du mapped*/
QFutureWatcher<QImage> futureWatcher;
QObject::connect(&futureWatcher, SIGNAL(finished()), &dialog, SLOT(reset()));
QObject::connect(&dialog, SIGNAL(canceled()), &futureWatcher, SLOT(cancel()));
QObject::connect(&futureWatcher, SIGNAL(progressRangeChanged(int, int)), &dialog, SLOT(setRange(int, int)));
QObject::connect(&futureWatcher, SIGNAL(progressValueChanged(int)), &dialog, SLOT(setValue(int)));
/*a chaque nouvelle imagette genere on l'affiche*/
QObject::connect(&futureWatcher, SIGNAL(resultReadyAt ( int )),this,SLOT(newImage(int)));
/*lancement du mapped*/
futureWatcher.setFuture(QtConcurrent::mapped(lImage,scale ));
/*permet de certifier que futureWatcher et lImage ne sont pas détruit avant la fin du mapped*/
dialog.exec();
/*attend la fin des traitement en cours*/
futureWatcher.waitForFinished();
}
void FenPrincipale::newImage(int index)
{
/*on récuper le sender du signal connecte*/
QFutureWatcher<QImage> * watcher =static_cast< QFutureWatcher<QImage> * >(sender());
if (!watcher) return;
/*creation d'un QLabel et ajout dans le layout d'image*/
monLabel *label = new monLabel;
label->setPixmap( QPixmap::fromImage(watcher->resultAt (index)) );
label->setValue(index);
miniLayout->addWidget(label);
connect(label, SIGNAL(onClicked(int)), this, SLOT(afficheImageGrand(int)));
}
void FenPrincipale::afficheImageGrand(int i)
{
QLabel *imageGrande = new QLabel;
QMessageBox::critical(this, "test", pathImages->at(i));
//QImage image(pathImages->at(i));
//imageGrande->setPixmap(QPixmap::fromImage(image));
imageGrandeLayout->addWidget(imageGrande);
}
monLabel::monLabel(QWidget * parent,Qt::WindowFlags f) : QLabel(parent,f)
{
m_var=-1;
}
void monLabel::mouseReleaseEvent(QMouseEvent *)
{
emit onClicked(m_var);
}
void monLabel::setValue(int var)
{
m_var=var;
}
int monLabel::getValue()
{
return m_var;
} |
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