Bug 209331 - Kickoff - subpixel font rendering not used in titles
Summary: Kickoff - subpixel font rendering not used in titles
Status: RESOLVED INTENTIONAL
Alias: None
Product: plasma4
Classification: Plasma
Component: widget-kickoff (show other bugs)
Version: unspecified
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-10-03 19:58 UTC by Rich Johnson
Modified: 2010-05-16 06:50 UTC (History)
6 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
kickoff menu with enabled subpixel hinting but text is rendered incorrectly (69.57 KB, image/png)
2010-04-30 14:17 UTC, Fisiu
Details

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Description Rich Johnson 2009-10-03 19:58:04 UTC
Version:            (using KDE 4.3.1)
OS:                Linux
Installed from:    Ubuntu Packages

Reported originally in Launchpad at https://bugs.launchpad.net/bugs/377552.
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Ever since I upgraded to KDE 4.3 beta on my Karmic system, the icon titles in Kickoff have been displayed using grayscale anti-aliasing instead of subpixel rendering. The descriptions (smaller, gray text) and the title at the top are properly drawn using subpixel rendering. I have attached a screenshot to demonstrate.

screenshot link:  http://launchpadlibrarian.net/26854763/nosubpixel.png

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The Lancelot widget is correctly rendering the text we noticed. This was even confirmed with users of other distros on IRC as well. I can't check my trunk build as it is currently on the fritz.
Comment 1 Aaron J. Seigo 2009-10-03 20:49:51 UTC
it is using Qt to do the font rendering:

p.drawText(titleRect, Qt::AlignLeft|Qt::AlignVCenter, titleText);

it's not something plasma does special.
Comment 2 Taras Puchko 2009-11-05 19:50:24 UTC
The Task Manager and Folder View widget on Kubuntu also use grayscale, but the Digital Clock and Calculator have lcd-antialiased font.

Maybe they use a different method for drawing text?
Comment 3 David A 2009-11-11 13:06:11 UTC
(In reply to comment #2)
> The Task Manager and Folder View widget on Kubuntu also use grayscale, but the
> Digital Clock and Calculator have lcd-antialiased font.
> 
> Maybe they use a different method for drawing text?

I confirm these bugs in OpenSuSE 11.1, KDE 4.3.3

Maybe this affects font rendering?

http://websvn.kde.org/branches/KDE/4.3/kdebase/workspace/plasma/applets/kickoff/ui/urlitemview.cpp?view=markup

147	        painter->setRenderHint(QPainter::Antialiasing, false);
Comment 4 Fisiu 2010-04-30 14:14:54 UTC
Bug still occurs in openSUSE 11.3 Milestone 6.
Qt: 4.6.2
KDE: 4.4.2

Kickoff menu has missing subpixel hinting (when enabled). Main categories are
fine but all apps and their categories NOT.

Why this bug is set to 'RESOLVED as WONTFIX' while it's not resolved?

Regards,
Mariusz
Comment 5 Fisiu 2010-04-30 14:17:10 UTC
Created attachment 43115 [details]
kickoff menu with enabled subpixel hinting but text is rendered incorrectly
Comment 6 PJSingh5000 2010-05-02 06:19:47 UTC
This is still an issue in KDE 4.4.2 (Kubuntu Lucid Lynx 10.04 x64).

Since this bug is marked as RESOLVED/WONTFIX, would someone advise if we need to open a new bug for this issue?