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Issue #59: Set physical dimensions of images in the rasterizer

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Jakub Melka
2023-07-16 18:56:50 +02:00
parent fe1bf16597
commit 2daf1a6d53
1 changed files with 8 additions and 0 deletions
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8
Pdf4QtLib/sources/pdfrenderer.cpp
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@ -317,6 +317,14 @@ QImage PDFRasterizer::render(PDFInteger pageIndex,
image.convertTo(QImage::Format_ARGB32_Premultiplied);
}
// Calculate image DPI
QSizeF rotatedSizeInMeters = page->getRotatedMediaBoxMM().size() / 1000.0;
QSizeF rotatedSizeInPixels = image.size();
qreal dpiX = rotatedSizeInPixels.width() / rotatedSizeInMeters.width();
qreal dpiY = rotatedSizeInPixels.height() / rotatedSizeInMeters.height();
image.setDotsPerMeterX(qCeil(dpiX));
image.setDotsPerMeterY(qCeil(dpiY));
return image;
}