Re: Korean text rendering

2025-05-14 Thread Konstantin Kharlamov
On Thu, 2025-05-15 at 06:29 +0300, Igor Mironchik wrote:
> Hi.
> 
> Are any Korean here? I'm curious if they have very bad performance of
> rendering Korean text in any Qt application? Or is this just because
> of 
> missing some fonts on my system? I see a huge performance slowdown on
> Korean text rendering.

How did you measure? I'm not a Korean, but I tried pasting a Korean
wiki article to Kate with "Droid Sans [1ASC]" font and scrolling and I
don't see any change in performance. Perhaps some more scientific
method required.


Re: Korean text rendering

2025-05-14 Thread Sung-Jae, Cho
Hi.

Yes, here is Korean.
My environment is Gentoo, Xorg, plasma-meta 6.3.4, kate 25.04.0:6,
ibus-hangul as Input Method using.
>From Chrome browser, I pasted a page of Korean article to Kate.
It has no delayed on text edit field and rendering navigate bar with little
delay. Not in a second.

If you have some request for test environment versions and hardware
combination,
please reply again.

Thanks a lot for supporting Korean environment.
I appreciate it.

On Thu, May 15, 2025 at 2:38 PM Igor Mironchik 
wrote:

>
> On 15.05.2025 08:29, Konstantin Kharlamov wrote:
> > On Thu, 2025-05-15 at 06:29 +0300, Igor Mironchik wrote:
> >> Hi.
> >>
> >> Are any Korean here? I'm curious if they have very bad performance of
> >> rendering Korean text in any Qt application? Or is this just because
> >> of
> >> missing some fonts on my system? I see a huge performance slowdown on
> >> Korean text rendering.
> > How did you measure? I'm not a Korean, but I tried pasting a Korean
> > wiki article to Kate with "Droid Sans [1ASC]" font and scrolling and I
> > don't see any change in performance. Perhaps some more scientific
> > method required.
>
>
> I paste in Kate a Korean text (~1kB), it took so much time to paste and
> render it (~5 seconds), and Kate starts to think a lot even on
> navigating in menu.
>
> The same with English or Russian text - I don't see any delays, Kate is
> responsive.
>
>


Re: Korean text rendering

2025-05-14 Thread Konstantin Kharlamov
On Thu, 2025-05-15 at 08:37 +0300, Igor Mironchik wrote:
> 
> On 15.05.2025 08:29, Konstantin Kharlamov wrote:
> > On Thu, 2025-05-15 at 06:29 +0300, Igor Mironchik wrote:
> > > Hi.
> > > 
> > > Are any Korean here? I'm curious if they have very bad
> > > performance of
> > > rendering Korean text in any Qt application? Or is this just
> > > because
> > > of
> > > missing some fonts on my system? I see a huge performance
> > > slowdown on
> > > Korean text rendering.
> > How did you measure? I'm not a Korean, but I tried pasting a Korean
> > wiki article to Kate with "Droid Sans [1ASC]" font and scrolling
> > and I
> > don't see any change in performance. Perhaps some more scientific
> > method required.
> 
> 
> I paste in Kate a Korean text (~1kB), it took so much time to paste
> and 
> render it (~5 seconds), and Kate starts to think a lot even on 
> navigating in menu.
> 
> The same with English or Russian text - I don't see any delays, Kate
> is 
> responsive.

I see. Seems something specific to your system — I just created a 158K
text file by copy-pasting a Korean Wiki article a dozen of times, and
when I open it in Kate, everything is smooth and nice.

Is it maybe the font? What font do you use? Can you try going to Kate
settings and changing the font to "Droid Sans [1ASC]" (on Archlnux it's
a `ttf-droid` package) and seeing if that makes any difference?