From kde-core-devel  Sat Aug 07 02:57:54 1999
From: Cristian Tibirna <ctibirna () total ! net>
Date: Sat, 07 Aug 1999 02:57:54 +0000
To: kde-core-devel
Subject: transparent backgrounds in apps
X-MARC-Message: https://marc.info/?l=kde-core-devel&m=93399467419432

Hi
 
As Lotzi proposed putting transparent background (TBG) in the libraries,
Antonio actually worked the feature in konsole and Daniel prepared those
fast fading routines, I thought all of you could be interested.
 
Instead of putting all the konsole (kpager) duplicating background
mechanism in the libs, what about building a TBG pixmap server in
kdesktop?
 
Yes, this will invalidate TBG if kdesktop would not function, but then the
TBG would look weird anyways, as no bg would be really available.
 
The advantages would be:
 
- reducing the code needed for transparent background to one line par app
- reducing the memory usage from one desktop-sized pixmap per app for each
  desktop at *one* pixmap per desktop. 
- speeding up the TBG mechanism since each TBG display will only require a
  simple bitBlt of a pixmap having the size of the requesting widget.
- centralizing all the TBG code (hence making it available for anything,
  from full widgets to menu items :-)
 
What do you think?
 
Thanks for listening
Cristian