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Subject DO NOT REPLY [Bug 115962] Broken antialiasing on exporting curved objects to PDF
Date Mon, 06 Feb 2012 16:50:58 GMT

Armin Le Grand <> changed:

           What    |Removed                     |Added
             Status|CONFIRMED                   |ACCEPTED

--- Comment #8 from Armin Le Grand <> 2012-02-06 16:50:58 UTC ---
ALG: Checked various aspects of PDF export: Normally implying 720 DPI (see
VirtualDevice::SetReferenceDevice with REFDEV_MODE_PDF1 used from the PDF
Exporter). Just for MetaFloatTransparentAction this is not used, but:

nMaxBmpDPI = i_rContext.m_bOnlyLosslessCompression ? 300 : 72;

This means there is a workaround to choose lossless compression in the PDF
dialog to get 300 DPI for conversion of MetaFloatTransparentActions to
BitmapEx. This also means even then nut the full implied DPI for PDF export is
used. The workaround also increases PDF file size by exporting images lossless.
There is also an increase of data (of course) when going from 72 to 300 DPI,
but compared with using 720 DPI (I tried that out) it is acceptable and gives
acceptable results, a good quality/filesize compromize.

For solving this I tend to raise the default resolution to 300 DPI for
exporting of MetaFloatTransparentActions, independent from set lossless

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