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Fix thumbnail images - they have too low resolution

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Jakub Melka
2023-07-28 15:13:33 +02:00
parent 29ea799c20
commit 91c9315900
1 changed files with 5 additions and 2 deletions
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7
Pdf4QtLib/sources/pdfitemmodels.cpp
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@@ -1,4 +1,4 @@
// Copyright (C) 2019-2022 Jakub Melka // Copyright (C) 2019-2022 Jakub Melka
// //
// This file is part of PDF4QT. // This file is part of PDF4QT.
// //
@@ -19,6 +19,7 @@
#include "pdfdocument.h" #include "pdfdocument.h"
#include "pdfdrawspacecontroller.h" #include "pdfdrawspacecontroller.h"
#include "pdfdbgheap.h" #include "pdfdbgheap.h"
#include "pdfdrawwidget.h"
#include <QFont> #include <QFont>
#include <QStyle> #include <QStyle>
@@ -691,9 +692,11 @@ QVariant PDFThumbnailsItemModel::data(const QModelIndex& index, int role) const
QPixmap pixmap; QPixmap pixmap;
if (!m_thumbnailCache.find(key, &pixmap)) if (!m_thumbnailCache.find(key, &pixmap))
{ {
QImage thumbnail = m_proxy->drawThumbnailImage(index.row(), m_thumbnailSize); const qreal devicePixelRatio = m_proxy->getWidget()->devicePixelRatioF();
QImage thumbnail = m_proxy->drawThumbnailImage(index.row(), m_thumbnailSize * devicePixelRatio);
if (!thumbnail.isNull()) if (!thumbnail.isNull())
{ {
thumbnail.setDevicePixelRatio(devicePixelRatio);
pixmap = QPixmap::fromImage(qMove(thumbnail)); pixmap = QPixmap::fromImage(qMove(thumbnail));
m_thumbnailCache.insert(key, pixmap); m_thumbnailCache.insert(key, pixmap);
} }