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* What is the proper way to scale fringe-bitmaps for high-DPI displays?
@ 2019-03-20 14:55 Clément Pit-Claudel
  2019-03-20 17:32 ` Eli Zaretskii
  0 siblings, 1 reply; 19+ messages in thread
From: Clément Pit-Claudel @ 2019-03-20 14:55 UTC (permalink / raw)
  To: Emacs developers

Hi all,

Users on Flycheck are complaining about poor readability of our fringe bitmaps on high-DPI monitors, as the bitmaps look tiny on such screens.  An easy fix is to double the size of the bitmap, but it leaves users of low-DPI monitors in the cold.  A trickier fix would be to dynamically detect the current monitor's density, and pick the appropriate bitmap accordingly, but I'm not entirely sure how to do detect these high-DPI monitors:

- x-display-monitor-attributes-list seems OK, but looks more complex than what we need (based on looking at the C code) — is it OK to call it repeatedly to figure out the current monitor's density for a given frame?

- x-display-pixel-width and x-display-pixel-mm seem simpler, but the documentation says 'On "multi-monitor" setups this refers to the pixel width for all
physical monitors associated with TERMINAL.'.  What does this mean?

Also, how do applications typically deal with frames being moved from a low-DPI monitor to a high-DPI one? Is that an issue in practice?

Thanks!
Clément.



^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2019-03-21 18:33 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-03-20 14:55 What is the proper way to scale fringe-bitmaps for high-DPI displays? Clément Pit-Claudel
2019-03-20 17:32 ` Eli Zaretskii
2019-03-20 19:34   ` Clément Pit-Claudel
2019-03-20 19:44     ` Eli Zaretskii
2019-03-20 20:05       ` Clément Pit-Claudel
2019-03-20 20:17         ` Eli Zaretskii
2019-03-20 21:17           ` Clément Pit-Claudel
2019-03-21  3:32             ` Eli Zaretskii
2019-03-21 11:43               ` Daniel Pittman
2019-03-21 13:33                 ` Yuri Khan
2019-03-21 14:32                   ` Eli Zaretskii
2019-03-21 17:32                     ` Alex
2019-03-21 18:31                       ` Eli Zaretskii
2019-03-21 17:38                     ` Clément Pit-Claudel
2019-03-21 18:33                       ` Eli Zaretskii
2019-03-21 17:40               ` Clément Pit-Claudel
2019-03-20 19:37   ` Clément Pit-Claudel
2019-03-21 15:24   ` Dmitry Gutov
2019-03-21 16:02     ` Eli Zaretskii

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