thumbnailmodel.cpp Example File

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 #include "thumbnailmodel.h"

 #include <QtCore/qurl.h>
 #include <QtGui/qpixmap.h>

 #if defined(Q_WS_MAEMO_5)
 const QSize ThumbnailModel::thumbnailSize(124, 124);
 #else
 const QSize ThumbnailModel::thumbnailSize(128, 128);
 #endif

 ThumbnailModel::ThumbnailModel(QAbstractGallery *gallery, QObject *parent)
     : QGalleryQueryModel(gallery, parent)
 {
     connect(&cache, SIGNAL(thumbnailReady()), this, SLOT(thumbnailLoaded()));
 }

 ThumbnailModel::~ThumbnailModel()
 {
 }

 QVariant ThumbnailModel::data(const QModelIndex &index, int role) const
 {
     return role == Qt::DecorationRole && index.isValid()
             ? cache.thumbnail(imageUrl(index))
             : QGalleryQueryModel::data(index, role);
 }

 QUrl ThumbnailModel::imageUrl(const QModelIndex &index) const
 {
     return itemUrl(index);
 }

 void ThumbnailModel::thumbnailLoaded()
 {
     emit dataChanged(index(0, 0), index(rowCount() - 1, columnCount() -1));
 }