Bug 368136

Summary:	email only renders to a quarter of its designated space
Product:	[Applications] kmail2	Reporter:	Lukas Schneiderbauer <lukas.schneiderbauer>
Component:	UI	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	georg.herdt, jonathan.lucas
Priority:	NOR
Version:	5.2.1
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	screenshot of kmail

Description Lukas Schneiderbauer 2016-09-02 05:58:07 UTC

Kmail version: 5.3.0 /16.08.0 (was not pickable above)
Qt: 5.6.1

Email on my hidpi screen only renders to a quarter of its designated space,
see screenshot soon to be attached.
This also happens when "opening" the email into a new window.

Let me know if you need additional info.

Reproducible: Always

Comment 1 Lukas Schneiderbauer 2016-09-02 05:59:03 UTC

Created attachment 100892 [details]
screenshot of kmail

Comment 2 Georg Herdt 2016-09-09 19:27:54 UTC

Same behaviour here on OpenSuse tumbleweed using kmail 5.3.0 with KDE 5.25.0 and Qt 5.6.1
My screensize 3840x2160.
KMail is unusable on such displays.

Comment 3 Georg Herdt 2016-09-09 20:35:22 UTC

I found a workaround.
Launch KMail with this additional settings:
> QT_SCALE_FACTOR=2 kmail 

See this blog post to get an idea what is happening:
https://blog.qt.io/blog/2016/01/26/high-dpi-support-in-qt-5-6/

Seems to me as if KHTMLpart compnent does not behave well in some scenarios ...

Comment 4 Lukas Schneiderbauer 2016-09-09 21:34:16 UTC

I already have QT_SCREEN_SCALE_FACTORS set.
Besides, setting QT_SCALE_FACTOR=2 in addition just scales the user interface again. The original problem is there nonetheless.

Comment 5 Lukas Schneiderbauer 2016-09-10 09:36:28 UTC

In addition I should mention that the mouse interactions (cursor and clicks, selections) behave as if the email text were in its correct position. So just the "drawing" is wrong.

Comment 6 jonathan.lucas 2016-12-04 17:54:32 UTC

issue persists in kmail 5.3.3. 
similarly, once a specific mail is opened via double click in new window, it keeps being non-scaled as seen in Lukas' screenshot.

Comment 7 Christoph Feck 2016-12-07 14:44:55 UTC


*** This bug has been marked as a duplicate of bug 372189 ***