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maraskan_user · 04-10-2021, 07:27 AM

This is very interesting! Maybe we could use this thread to collate thoughts, theories and data on the functioning of the present scaling in KOReader. A couple of months ago I did some experiments and took a few notes on the different settings available:

"Screen DPI"

+ Affects UI size.
+ Affects EM fonts.
- Doesn't affect PX, PT, IN, imageSize.

src>> Device:setScreenDPI(_dpi)

"Font Size"

- Doesn't affects UI size.
+ Affects EM fonts.
- Doesn't affect PX, PT, IN, imageSize.

src>> SetFontSize()

"Zoom (dpi)"

- Doesn't affects UI size.
- Doesn't affects EM fonts.
+ Affects PX, PT, IN, imageSize.

src>> SetRenderDPI()
src>> self._document:setIntProperty("crengine.render.dpi ", value or 96)

This weird separation is more historically grown than intentional, I assume? I still remember how confusing it was when I started using koreader...

04-10-2021, 07:27 AM	#8
maraskan_user Member Posts: 12 Karma: 10 Join Date: Dec 2020 Location: Germany Device: Boox Nova 3, Galaxy Tab S6, Samsung M21	This is very interesting! Maybe we could use this thread to collate thoughts, theories and data on the functioning of the present scaling in KOReader. A couple of months ago I did some experiments and took a few notes on the different settings available: "Screen DPI" + Affects UI size. + Affects EM fonts. - Doesn't affect PX, PT, IN, imageSize. src>> Device:setScreenDPI(_dpi) "Font Size" - Doesn't affects UI size. + Affects EM fonts. - Doesn't affect PX, PT, IN, imageSize. src>> SetFontSize() "Zoom (dpi)" - Doesn't affects UI size. - Doesn't affects EM fonts. + Affects PX, PT, IN, imageSize. src>> SetRenderDPI() src>> self._document:setIntProperty("crengine.render.dpi ", value or 96) This weird separation is more historically grown than intentional, I assume? I still remember how confusing it was when I started using koreader...