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Use screen size when deciding if tile manager should be used

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Kevin Slagle 2020-03-01 09:32:27 +00:00 committed by Albert Astals Cid
parent d8cad26be7
commit af99a04431
1 changed files with 18 additions and 5 deletions
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23
core/document.cpp
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@ -39,6 +39,8 @@
#include <QLabel>
#include <QPrinter>
#include <QPrintDialog>
#include <QScreen>
#include <QWindow>
#include <QStack>
#include <QUndoCommand>
#include <QMimeDatabase>
@ -1394,6 +1396,17 @@ void DocumentPrivate::sendGeneratorPixmapRequest()
QRect requestRect = r->isTile() ? r->normalizedRect().geometry( r->width(), r->height() ) : QRect( 0, 0, r->width(), r->height() );
TilesManager *tilesManager = r->d->tilesManager();
const double normalizedArea = r->normalizedRect().width() * r->normalizedRect().height();
const QScreen *screen = nullptr;
if (m_widget)
{
const QWindow *window = m_widget->window()->windowHandle();
if (window)
screen = window->screen();
}
if (!screen)
screen = QGuiApplication::primaryScreen();
const long screenSize = screen->devicePixelRatio() * screen->size().width()
* screen->devicePixelRatio() * screen->size().height();
// If it's a preload but the generator is not threaded no point in trying to preload
if ( r->preload() && !m_generator->hasFeature( Generator::Threaded ) )
@ -1419,9 +1432,9 @@ void DocumentPrivate::sendGeneratorPixmapRequest()
m_pixmapRequestsStack.pop_back();
delete r;
}
// If the requested area is above 8000000 pixels, and we're not rendering most of the page, switch on the tile manager
// If the requested area is above 4*screenSize pixels, and we're not rendering most of the page, switch on the tile manager
else if ( !tilesManager && m_generator->hasFeature( Generator::TiledRendering ) &&
(long)r->width() * (long)r->height() > 8000000L &&
(long)r->width() * (long)r->height() > 4L*screenSize &&
normalizedArea < 0.75 && normalizedArea != 0 )
{
// if the image is too big. start using tiles
@ -1477,8 +1490,8 @@ void DocumentPrivate::sendGeneratorPixmapRequest()
delete r;
}
}
// If the requested area is below 6000000 pixels, switch off the tile manager
else if ( tilesManager && (long)r->width() * (long)r->height() < 6000000L )
// If the requested area is below 3*screenSize pixels, switch off the tile manager
else if ( tilesManager && (long)r->width() * (long)r->height() < 3L*screenSize )
{
qCDebug(OkularCoreDebug).nospace() << "Stop using tiles on page " << r->pageNumber()
<< " (" << r->width() << "x" << r->height() << " px);";
@ -1489,7 +1502,7 @@ void DocumentPrivate::sendGeneratorPixmapRequest()
request = r;
}
else if ( (long)requestRect.width() * (long)requestRect.height() > 200000000L && (SettingsCore::memoryLevel() != SettingsCore::EnumMemoryLevel::Greedy ) )
else if ( (long)requestRect.width() * (long)requestRect.height() > 100L*screenSize && (SettingsCore::memoryLevel() != SettingsCore::EnumMemoryLevel::Greedy ) )
{
m_pixmapRequestsStack.pop_back();
if ( !m_warnedOutOfMemory )