/// Get a surface by location
AdobeSurfacePtr AdobeMemController::getSurface(const AdobeLocationPtr & loc)
{
QString page_position = loc->getBookmark();
CacheIter iter = cache_.find( page_position );
if (iter != cache_.end())
{
return iter.value();
}
return AdobeSurfacePtr();
}
/// Recalculate length of all pages.
/// The total length won't be updated unless calling this function
void AdobeMemController::recalcTotalLength()
{
total_length_ = 0;
CacheIter begin = cache_.begin();
CacheIter end = cache_.end();
CacheIter iter = begin;
for(; iter != end; ++iter)
{
total_length_ += iter.value()->length();
}
}
/// Get a DjVu Page by page number
DjVuPagePtr DjvuPageManager::getPage(int page_num)
{
CacheIter iter = cache_.find( page_num );
if (iter != cache_.end())
{
return iter.value();
}
DjVuPagePtr page(new DjVuPage(page_num));
cache_[page_num] = page;
return page;
}
/// Recalculate length of all pages.
/// The total length won't be updated unless calling this function
void DjvuPageManager::recalcTotalLength()
{
total_length_ = 0;
CacheIter begin = cache_.begin();
CacheIter end = cache_.end();
CacheIter iter = begin;
for(; iter != end; ++iter)
{
total_length_ += iter.value()->imageLength();
}
}
/// Remove a surface for given location
bool AdobeMemController::removeSurface( const AdobeLocationPtr & loc )
{
// remove the surface with lowest priority based on the remove strategy
CacheIter begin = cache_.begin();
CacheIter end = cache_.end();
CacheIter iter = begin;
CacheIter remove_iter = iter;
int ret = 0;
while( iter != end )
{
ret = AdobeSurface::comparePriority( iter.value().get(),
remove_iter.value().get(),
&policy_ );
if (ret < 0)
{
remove_iter = iter;
}
iter++;
}
if ( remove_iter == cache_.end() )
{
return false;
}
AdobeSurfacePtr surface = getSurface( loc );
if ( surface != 0 && surface == remove_iter.value() )
{
// if it is the same surface, return
return false;
}
total_length_ -= remove_iter.value()->length();
// remove the bitmap and other records, reset the status at the time
qDebug( "Remove Page:%p", remove_iter.value().get() );
cache_.erase( remove_iter );
return true;
}
/// Remove a surface for given location
bool DjvuPageManager::clearImage( int page_num )
{
// remove the surface with lowest priority based on the remove strategy
CacheIter begin = cache_.begin();
CacheIter end = cache_.end();
CacheIter iter = begin;
CacheIter remove_iter = iter;
int ret = 0;
while( iter != end )
{
ret = comparePriority( iter.value(), remove_iter.value(), &policy_ );
if (ret < 0)
{
remove_iter = iter;
}
iter++;
}
if ( remove_iter == cache_.end() )
{
return false;
}
DjVuPagePtr page = getPage( page_num );
if ( page != 0 && page == remove_iter.value() )
{
// if it is the same surface, return
return false;
}
total_length_ -= remove_iter.value()->imageLength();
// remove the bitmap and other records, reset the status at the time
qDebug( "Remove Page:%p", remove_iter.value().get() );
remove_iter.value()->clearImage();
return true;
}
QVariant DatabaseModel::data(const QModelIndex &index, int role) const
{
if (index.row() < db_->count()
&& index.column() < columnTags_.size())
{
const int i = index.row();
if (role == Qt::DisplayRole)
{
// return row index number
if (index.column() == 0)
return i + 1;
// return a game value
else
{
// lookup cache
Hash cachepos = ((Hash)i<<MAX_COLUMNS_SHIFT) | (Hash)index.column();
CacheIter c = cache_.find(cachepos);
// return cached value
if (c != cache_.end())
return c.value();
// -- get info first time --
// read game-header-info
Game game;
db_->loadGameHeaders(i, game);
QString tag = game.tag(columnTags_.at(index.column()));
// construct a variant
QVariant ret;
if (tag == "?")
// unknown
ret.setValue( QString("") );
else
{
bool ok;
// return as specific type?
{ float num = tag.toFloat(&ok); if (ok) ret.setValue( num ); }
if (!ok) { int num = tag.toInt(&ok); if (ok) ret.setValue( num ); }
// return as string
if (!ok) ret.setValue( tag );
}
// store in cache
cache_.insert(cachepos, ret);
return ret;
}
}
else if (role == Qt::FontRole)
{
if (db_->deleted(i))
{
QFont font;
font.setStrikeOut(true);
return font;
}
}
else if (role == Qt::ForegroundRole)
{
if (!db_->getValidFlag(i))
{
return QVariant(QColor(Qt::red));
}
else
if (db_->deleted(i))
return QVariant(QColor(Qt::gray));
return QVariant(QColor(Qt::black));
}
}
return QVariant();
}
