[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[soredake]

https://bugs.kde.org/show_bug.cgi?id=368939

soredake  changed:

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 CC|broaden_acid002@simplelogin |
   |.com|

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Noah Davis]

https://bugs.kde.org/show_bug.cgi?id=368939

Noah Davis  changed:

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 CC||noaha...@gmail.com
Version|unspecified |19.12.3

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Rex Dieter]

https://bugs.kde.org/show_bug.cgi?id=368939

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 CC||rdie...@gmail.com

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[soredake]

https://bugs.kde.org/show_bug.cgi?id=368939

soredake  changed:

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 CC||ndrzj1...@relay.firefox.com

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Méven Car]

https://bugs.kde.org/show_bug.cgi?id=368939

Méven Car  changed:

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 Ever confirmed|0   |1
 Status|REPORTED|CONFIRMED

--- Comment #9 from Méven Car  ---
(In reply to Ryan Swart from comment #0)
> With a high-dpi monitor, screenshots are far larger than they need to be,
> and need to be opened in gwenview or an image manipulation for resizing
> before they are usable. Having a pre-set resolution that the image can be
> resized to after capture, would remove that step and enable interesting
> workflow optimizations (eg. make website/app preview images easy to
> thumbnail).

The issue is about image formats : the typical file format used for screenshot
png has capability for pixel ratio but is rarely supported AFAIK
https://www.w3.org/TR/2003/REC-PNG-20031110/#11pHYs
http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.8

The good news is it seems Qt/QImage is supporting this
https://code.woboq.org/qt5/qtbase/src/gui/image/qpnghandler.cpp.html#1076 so
spectacle could support this with some effort in some cases. For instance in
multi-screen with wayland and multiple scaling factor this would make little
sense. But single screen screenshots or rectangular would be candidate.
The other option to allow to take downscaled screenshots would loose resolution
and details so this is not advisable and might make your screenshot unusable.

https://invent.kde.org/graphics/spectacle/-/merge_requests/29 fixing
https://bugs.kde.org/show_bug.cgi?id=409762 will allow on Wayland when in a
multi-monitor setup to take screenshots with each screen downscaled by their
own scale factor (loosing details!).

In the meantime you'd need to convert the image to lower resolution/scale down
the image, https://www.html5rocks.com/en/mobile/high-dpi/ gwenview or
imagemagick do that like a charm.

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368939

Nate Graham  changed:

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   See Also||https://bugs.kde.org/show_b
   ||ug.cgi?id=409762

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368939

Nate Graham  changed:

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 CC||meven@enioka.com

--- Comment #8 from Nate Graham  ---
You're reporting Bug 409762. This bug report tracks the opposite: optionally
reducing the resolution of HiDPI screenshots to the level of what you're
already seeing.

In fact you could say this is already fixed on Wayland LOL

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=368939

el...@seznam.cz changed:

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 CC||el...@seznam.cz

--- Comment #7 from el...@seznam.cz ---
I just tried Wayland and Spectacle on 4K and my screenshots are only FHD. And I
would like to be them in 4K. So I guess this issue should be addressed also on
Wayland, where things behave differently.

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=368939

signupem...@posteo.uk changed:

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 CC||signupem...@posteo.uk

--- Comment #6 from signupem...@posteo.uk ---
I too have HiDPI and I too would like something like this - whether as a
default or not - implemented. At present I have to export all screenshots to
GIMP and scale them down.

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Peter Wu]

https://bugs.kde.org/show_bug.cgi?id=368939

--- Comment #5 from Peter Wu  ---
Support for multiple monitors with different DPIs is a slightly different
issue. I think it would make sense to scale down to one with the lowest
resolution. It might however be informative to see how other operating systems
or desktop environments handle it.

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Boudhayan Gupta]

https://bugs.kde.org/show_bug.cgi?id=368939

Boudhayan Gupta  changed:

   What|Removed |Added

 CC||m...@baloneygeek.com

--- Comment #4 from Boudhayan Gupta  ---
I don't actually think this is a terrible idea. This might actually help us
with all those pesky "things don't work when we have different DPIs on differen
displays" - let's just scale everything down to the lowest common denominator.
Comments?

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[Spectacle] [Bug 368939] Option to automatically reduce size for HiDPI captures, which otherwise are humongous

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=368939

Nate Graham  changed:

   What|Removed |Added

Summary|Resize screenshot before|Option to automatically
   |copying/sending to another  |reduce size for HiDPI
   |application |captures, which otherwise
   ||are humongous
 CC||pointedst...@zoho.com

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