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f1d67cfbac
This code adds threaded processing of a batch of images. It uses the QtConcurrent implementations to call a function repeteadly using MAX_THREADS (Qt gets that for us) and returns a list of it. This call is blocking, so while the pixmaps are being scaled in threads, it will wait for all scalling to be done. Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
#include "divepicturewidget.h"
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#include <dive.h>
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#include <qtconcurrentmap.h>
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void DivePictureDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QStyledItemDelegate::paint(painter, option, index);
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}
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DivePictureModel::DivePictureModel(QObject *parent): QAbstractTableModel(parent)
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{
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}
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typedef QPair<QString, QPixmap> SPixmap;
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typedef QList<SPixmap> SPixmapList;
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SPixmap scaleImages(const QString& s){
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QPixmap p = QPixmap(s).scaled(128,128, Qt::KeepAspectRatio);
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SPixmap ret;
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ret.first = s;
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ret.second = p;
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return ret;
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}
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void DivePictureModel::updateDivePictures(int divenr)
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{
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qDebug() << "Updating dive pictures.";
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beginRemoveRows(QModelIndex(), 0, numberOfPictures-1);
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numberOfPictures = 0;
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endRemoveRows();
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QStringList pictures;
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struct dive *d = get_dive(divenr);
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if (!d){
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qDebug() << "Got no dive, exiting.";
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return;
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}
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// All pictures are set in *all* divecomputers. ( waste of memory if > 100 pictures? )
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// so just get from the first one.
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struct event *ev = d->dc.events;
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while(ev){
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if(ev->type == 123){ // 123 means PICTURE.
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numberOfPictures++;
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pictures.push_back(QString(ev->name));
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}
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ev = ev->next;
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}
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SPixmapList retList = QtConcurrent::blockingMapped<SPixmapList>( pictures, scaleImages);
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Q_FOREACH(const SPixmap & pixmap, retList)
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stringPixmapCache[pixmap.first] = pixmap.second;
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if (numberOfPictures == 0){
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qDebug() << "Got no pictures, exiting.";
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return;
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}
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beginInsertRows(QModelIndex(), 0, numberOfPictures-1);
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endInsertRows();
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qDebug() << "Everything Ok.";
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}
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int DivePictureModel::columnCount(const QModelIndex &parent) const
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{
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}
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QVariant DivePictureModel::data(const QModelIndex &index, int role) const
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{
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}
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int DivePictureModel::rowCount(const QModelIndex &parent) const
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{
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return numberOfPictures;
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}
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DivePictureWidget::DivePictureWidget(QWidget *parent): QListView(parent)
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{
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}
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