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List: kwin
Subject: Re: Color Filter plugin
From: "Anton Moiseev" <benderamp () gmail ! com>
Date: 2008-01-29 10:15:57
Message-ID: 9aa228cf0801290215w52f84ebenae4ea32883cfa8dd () mail ! gmail ! com
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Qt allows making background completely transparent and at the same time to
leave other application elements opaque:
http://doc.trolltech.com/qq/qq16-background.html
This is done with the standard API, so would not be a hack. I think that
applications like Konsole should support this as one of the transparency
modes. But for all other cases I think that color filter effect would be
very useful as a universal solution. As it was said, if I type text in kword
(or read text in the proprietary acrobat reader version), I want to see what
happens on the desktop - and kword should not support such kind of
transparency in no way natively (and acrobat reader would never support this
moreover).
On Jan 29, 2008 1:00 PM, Lubos Lunak <l.lunak@suse.cz> wrote:
> On Monday 28 of January 2008, Sebastian Kuegler wrote:
> > On Thursday 24 January 2008 22:18:48 Lubos Lunak wrote:
> > > some for I-know-fragment-shaders people I guess :) . Today I noticed
> one
> > > user in one forum asking if it's possible somehow to have one window
> on
> > > top of another one, with the top one having background transparent, so
> > > that the user could work in the top one while reading text from the
> > > bottom one. Where the point is that only the background should be
> > > transparent, since making the whole window transparent makes it less
> > > readable.
> > >
> > > Would it be possible to extend Invert to make arbitrary color
> > > conversions, including changing the alpha channel (i.e. something like
> > > http://wiki.compiz-fusion.org/Plugins/Colorfilter)?
> >
> > Konsole is doing this, no? (Although it's at an application level.) But
> it
> > certainly works nicely, transparant background, opaque text on top of
> it.
> >
> > Filtering out the backgroundcolor sounds quite hackish to me.
>
> And do you have a better idea? It's still certainly better than each
> applications hacking it themselves (especially given all the trouble that
> currently arise as a result) and putting two windows this way to be able
> to
> work with them together seems to be the main use for the opacity function.
>
> --
> Lubos Lunak
> KDE developer
> --------------------------------------------------------------
> SUSE LINUX, s.r.o. e-mail: l.lunak@suse.cz , l.lunak@kde.org
> Lihovarska 1060/12 tel: +420 284 028 972
> 190 00 Prague 9 fax: +420 284 028 951
> Czech Republic http//www.suse.cz
> _______________________________________________
> Kwin mailing list
> Kwin@kde.org
> https://mail.kde.org/mailman/listinfo/kwin
>
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Qt allows making background completely transparent and at the same time to leave \
other application elements opaque:<br><a \
href="http://doc.trolltech.com/qq/qq16-background.html">http://doc.trolltech.com/qq/qq16-background.html</a><br>
<br>This is done with the standard API, so would not be a hack. I think that \
applications like Konsole should support this as one of the transparency modes. But \
for all other cases I think that color filter effect would be very useful as a \
universal solution. As it was said, if I type text in kword (or read text in the \
proprietary acrobat reader version), I want to see what happens on the desktop - and \
kword should not support such kind of transparency in no way natively (and acrobat \
reader would never support this moreover).<br> <br><div class="gmail_quote">On Jan \
29, 2008 1:00 PM, Lubos Lunak <<a \
href="mailto:l.lunak@suse.cz">l.lunak@suse.cz</a>> wrote:<br><blockquote \
class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt \
0pt 0.8ex; padding-left: 1ex;"> On Monday 28 of January 2008, Sebastian Kuegler \
wrote:<br>> On Thursday 24 January 2008 22:18:48 Lubos Lunak wrote:<br>> > \
some for I-know-fragment-shaders people I guess :) . Today I noticed \
one<br>> > user in one forum asking if it's possible somehow to have one \
window on<br> > > top of another one, with the top one having background \
transparent, so<br>> > that the user could work in the top one while reading \
text from the<br>> > bottom one. Where the point is that only the background \
should be<br> > > transparent, since making the whole window transparent makes \
it less<br>> > readable.<br>> ><br>> > Would it be possible \
to extend Invert to make arbitrary color<br>> > conversions, including changing \
the alpha channel (i.e. something like<br> > > <a \
href="http://wiki.compiz-fusion.org/Plugins/Colorfilter" \
target="_blank">http://wiki.compiz-fusion.org/Plugins/Colorfilter</a>)?<br>><br>> \
Konsole is doing this, no? (Although it's at an application level.) But it<br> \
> certainly works nicely, transparant background, opaque text on top of \
it.<br>><br>> Filtering out the backgroundcolor sounds quite hackish to \
me.<br><br> And do you have a better idea? It's still certainly better than \
each<br> applications hacking it themselves (especially given all the trouble \
that<br>currently arise as a result) and putting two windows this way to be able \
to<br>work with them together seems to be the main use for the opacity function.<br> \
<br>--<br>Lubos Lunak<br>KDE \
developer<br>--------------------------------------------------------------<br>SUSE \
LINUX, s.r.o. e-mail: <a href="mailto:l.lunak@suse.cz">l.lunak@suse.cz</a> , \
<a href="mailto:l.lunak@kde.org">l.lunak@kde.org</a><br> Lihovarska 1060/12 \
tel: +420 284 028 972<br>190 00 Prague 9 fax: +420 284 028 \
951<br>Czech Republic \
http//www.suse.cz<br>_______________________________________________<br>Kwin mailing \
list<br><a href="mailto:Kwin@kde.org">Kwin@kde.org</a><br> <a \
href="https://mail.kde.org/mailman/listinfo/kwin" \
target="_blank">https://mail.kde.org/mailman/listinfo/kwin</a><br></blockquote></div><br>
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