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pageview: Send pixmap preload requests in order of increasing distance from the viewport

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(instead of requesting everything past it till the end of the document,
and then starting to load backwards)
This commit is contained in:
Fabio D'Urso 2012-07-02 08:28:23 +02:00
parent b78aa89d12
commit a022d124e6
1 changed files with 4 additions and 3 deletions
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7
ui/pageview.cpp
View file

@ -4019,10 +4019,7 @@ void PageView::slotRequestVisiblePixmaps( int newValue )
requestedPixmaps.push_back( new Okular::PixmapRequest(
PAGEVIEW_ID, i->pageNumber(), i->uncroppedWidth(), i->uncroppedHeight(), PAGEVIEW_PRELOAD_PRIO, true ) );
}
}
for( int j = 1; j <= pagesToPreload; j++ )
{
// add the page before the 'visible series' in preload
int headRequest = d->visibleItems.first()->pageNumber() - j;
if ( headRequest >= 0 )
@ -4033,6 +4030,10 @@ void PageView::slotRequestVisiblePixmaps( int newValue )
requestedPixmaps.push_back( new Okular::PixmapRequest(
PAGEVIEW_ID, i->pageNumber(), i->uncroppedWidth(), i->uncroppedHeight(), PAGEVIEW_PRELOAD_PRIO, true ) );
}
// stop if we've already reached both ends of the document
if ( headRequest < 0 && tailRequest >= (int)d->items.count() )
break;
}
}