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[Question #704940]: copy-image with use device pixel ratio on hi-dpi screen

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From: Benedykt 'Silmethule' Jaworski <question704940@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 01 Feb 2023 12:25:36 -0000
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New question #704940 on qpdfview:
https://answers.launchpad.net/qpdfview/+question/704940

When I select a rectangle in an open PDF and copy the image on a hi-dpi screen with interface scaling (1.5x), and the viewing option “use device pixel ratio” is turned on, the copied image is lower-res than the displayed PDF, as if “use device pixel ratio” was turned off.

If I take a direct screenshot of the PDF viewer window I get 1.5x1.5 times bigger image than the copied one.

Is this expected behaviour that the image being copied is lower-res than the PDF rendered on screen? It’s surprising to me and I don’t like to be forced to zoom in on the page much more than when viewing it to get reasonable quality image when copying.

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