Summary: | Garbage stays on screen with antialiasing enabled | ||
---|---|---|---|
Product: | [Applications] konsole | Reporter: | Ricardo Garcia <yellow> |
Component: | general | Assignee: | Konsole Developer <konsole-devel> |
Status: | RESOLVED FIXED | ||
Severity: | normal | CC: | adaptee, esigra, vassilii |
Priority: | NOR | ||
Version: | 1.5.2 | ||
Target Milestone: | --- | ||
Platform: | Slackware | ||
OS: | Linux | ||
Latest Commit: | Version Fixed In: | ||
Attachments: |
Typed one underscore
Typed several more underscores Removed the underscores with backspace. Notice garbage on screen. |
Description
Ricardo Garcia
2005-11-10 20:01:02 UTC
Created attachment 13380 [details]
Typed one underscore
Created attachment 13381 [details]
Typed several more underscores
Created attachment 13382 [details]
Removed the underscores with backspace. Notice garbage on screen.
I forgot to mention that the garbage disappears if you hide the konsole display by minimizing it or putting another window on top of it and then showing it again. I still have it in debian kde konsole from 3.5.5: $ dpkg --status konsole Package: konsole Status: install ok installed ... Architecture: i386 Source: kdebase Version: 4:3.5.5a.dfsg.1-6 It feels that the application gets the bounding box info from the font chars, but in reality the symbol gets rendered into larger box, when the antialiasing is taken into account. In "Monospace/bold/18" font, do an "echo M" to have an "M" printed near the left border. Then do a "clear" and you'll see the left portion of "M"'s antialiasing (lighter gray than the letter) still on the screen. I can post screenshots if it's unclear. P.S. My version of konsole is 1.6.5 I am not able to reproduce here, but looking at the relevant code your diagnosis is probably correct. The box cleared for the character is based on the width and height metrics in pixels returned by Qt. It is possible that under some circumstances with antialiasing the character extends beyond this area. If you wish, I can give you as much local settings for reproduction as you need so that it's retestable locally. Here are the relevant debconf settings: *** The following debconf settings were detected: * fontconfig/subpixel_rendering: Never * fontconfig/enable_bitmaps: false * fontconfig/hinting_type: Native Font that I gave in my original mail hits it, also most other fonts with wide enough capital M which are bold have the same effect. Here is my fonts configuration set (from /etc/fonts/conf.d) lrwxrwxrwx 1 root root 42 2007-04-16 19:25 10-no-sub-pixel.conf -> /etc/fonts/conf.avail/10-no-sub-pixel.conf lrwxrwxrwx 1 root root 39 2007-03-07 20:28 20-fix-globaladvance.conf -> ../conf.avail/20-fix-globaladvance.conf lrwxrwxrwx 1 root root 36 2007-03-07 20:28 20-lohit-gujarati.conf -> ../conf.avail/20-lohit-gujarati.conf lrwxrwxrwx 1 root root 39 2007-03-07 20:28 20-unhint-small-vera.conf -> ../conf.avail/20-unhint-small-vera.conf lrwxrwxrwx 1 root root 33 2007-03-07 20:28 30-amt-aliases.conf -> ../conf.avail/30-amt-aliases.conf lrwxrwxrwx 1 root root 39 2007-04-16 19:25 30-defoma.conf -> /var/lib/defoma/fontconfig.d/fonts.conf lrwxrwxrwx 1 root root 33 2007-03-07 20:28 30-urw-aliases.conf -> ../conf.avail/30-urw-aliases.conf lrwxrwxrwx 1 root root 29 2007-03-07 20:28 40-generic.conf -> ../conf.avail/40-generic.conf lrwxrwxrwx 1 root root 31 2007-03-07 20:28 49-sansserif.conf -> ../conf.avail/49-sansserif.conf lrwxrwxrwx 1 root root 26 2007-03-07 20:28 50-user.conf -> ../conf.avail/50-user.conf lrwxrwxrwx 1 root root 27 2007-03-07 20:28 51-local.conf -> ../conf.avail/51-local.conf lrwxrwxrwx 1 root root 27 2007-03-07 20:28 60-latin.conf -> ../conf.avail/60-latin.conf lrwxrwxrwx 1 root root 35 2007-03-07 20:28 65-fonts-persian.conf -> ../conf.avail/65-fonts-persian.conf lrwxrwxrwx 1 root root 30 2007-03-07 20:28 65-nonlatin.conf -> ../conf.avail/65-nonlatin.conf lrwxrwxrwx 1 root root 29 2007-03-07 20:28 69-unifont.conf -> ../conf.avail/69-unifont.conf lrwxrwxrwx 1 root root 40 2007-04-16 19:25 70-no-bitmaps.conf -> /etc/fonts/conf.avail/70-no-bitmaps.conf lrwxrwxrwx 1 root root 31 2007-03-07 20:28 80-delicious.conf -> ../conf.avail/80-delicious.conf lrwxrwxrwx 1 root root 31 2007-03-07 20:28 90-synthetic.conf -> ../conf.avail/90-synthetic.conf If you need the contents of those not here, I can paste them together, but these are Debian std; the defoma one only sets up some particular aliases: <fontconfig> <dir>/var/lib/defoma/fontconfig.d</dir> <alias> <family>Palatino-Roman</family> <accept><family>URWPalladioL-Roma</family></accept> </alias> ... Feel free to ask for more details if needed. Vassilii Should be fixed in KDE 4 since Konsole now always repaints full lines rather than individual letters when typing on a line. I couldn't reproduce in KDE 3 though so I'll need someone else to confirm. Verified fixed on KDE 4.4.5. Thanks, folks! |