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Lazy loading of card database view => faster startup times

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This commit is contained in:
Fabio Bas 2015-08-26 23:26:39 +02:00
parent c917a6c272
commit fddcbb8296
8 changed files with 84 additions and 53 deletions
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42
cockatrice/src/carddatabasemodel.cpp
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@ -28,26 +28,16 @@ int CardDatabaseModel::columnCount(const QModelIndex &/*parent*/) const
QVariant CardDatabaseModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if ((index.row() >= cardList.size()) || (index.column() >= CARDDBMODEL_COLUMNS))
return QVariant();
if (role != Qt::DisplayRole && role != SortRole)
if (!index.isValid() ||
index.row() >= cardList.size() ||
index.column() >= CARDDBMODEL_COLUMNS ||
(role != Qt::DisplayRole && role != SortRole))
return QVariant();
CardInfo *card = cardList.at(index.row());
switch (index.column()){
case NameColumn: return card->getName();
case SetListColumn: {
QStringList setList;
const QList<CardSet *> &sets = card->getSets();
for (int i = 0; i < sets.size(); i++)
{
if(sets[i]->getEnabled())
setList << sets[i]->getShortName();
}
return setList.join(", ");
}
case SetListColumn: return card->getSetsNames();
case ManaCostColumn: return role == SortRole ?
QString("%1%2").arg(card->getCmc(), 4, QChar('0')).arg(card->getManaCost()) :
card->getManaCost();
@ -139,8 +129,30 @@ CardDatabaseDisplayModel::CardDatabaseDisplayModel(QObject *parent)
filterTree = NULL;
setFilterCaseSensitivity(Qt::CaseInsensitive);
setSortCaseSensitivity(Qt::CaseInsensitive);
loadedRowCount = 0;
}
bool CardDatabaseDisplayModel::canFetchMore(const QModelIndex & index) const
{
return loadedRowCount < sourceModel()->rowCount(index);
}
void CardDatabaseDisplayModel::fetchMore(const QModelIndex & index)
{
int remainder = sourceModel()->rowCount(index) - loadedRowCount;
int itemsToFetch = qMin(100, remainder);
beginInsertRows(QModelIndex(), loadedRowCount, loadedRowCount+itemsToFetch-1);
loadedRowCount += itemsToFetch;
endInsertRows();
}
int CardDatabaseDisplayModel::rowCount(const QModelIndex &parent) const
{
return qMin(QSortFilterProxyModel::rowCount(parent), loadedRowCount);
}
bool CardDatabaseDisplayModel::lessThan(const QModelIndex &left, const QModelIndex &right) const {