Dan Espen <des...@verizon.net> writes: > Ranjan Maitra <stat.mai...@inbox.com> writes: > >> On Sun, 02 Dec 2012 00:14:45 -0500 Dan Espen <des...@verizon.net> wrote: >> >>> Ranjan Maitra <stat.mai...@inbox.com> writes: >>> >>> > Hello, >>> > >>> > I was wondering if it is yet possible to get rounded corners on >>> > windows using fvwm. I know that there is an unofficial patch around for >>> > this, but I was looking to hopefully avoid going out of the official >>> > version. >>> > >>> > If it is not possible to get rounded corners on windows using fvwm, are >>> > there any plans for adding this support? If so, soon? Longer? Why not >>> > just adapt the patch? >>> >>> Generally Fvwm only adds frivolous things (like FvwmAnimate), >>> when they don't add bloat to the core of fvwm. >>> >>> I found a file named >>> >>> 09-FluxRoundedCorners.patch >>> >>> It doesn't qualify. >> >> OK, I am sorry for this naivete, but I don't know what parts in the >> patch cause the bloat: can they be worked around? (Of course, by >> that, I mean easily, since after all, anything can possibly be worked >> around.) > > If that's the complete patch, it's lacking documentation and only works > with 2 radiuses, would attempt to curve a 1 pixel border. In short, it > looks like a hack.
Looking again at rounded windows, I notice how they conflict with Fvwm's notion of a border. Fvwm borders come in beveled and flat flavors with variable width. A one or 2 pixel border doesn't lend itself to being rounded. I'm not sure how many pixels are needed before rounding becomes visible, probably around 5. Bevels probably wouldn't work at all. You couldn't just use a shape mask, you'd have to try to make the bevel follow the curve. So far I haven't found a generic method for building the shape mask that would account for the degree of curvature. The patch I looked at, just used 2 different shape masks. I'm not sure how well that approach would work at varying resolutions. Lastly, I found this pretty old Kenton Lee write up: http://www.rahul.net/kenton/perf.html#Shapes Shaped Windows A performance issue related to object shapes is the use of shaped (non-rectangular) windows. Shaped windows are available via the SHAPE X protocol extension. While shaped windows can be useful, they can cause performance problems in many situations. Most importantly, Expose events always return rectangular exposure regions, so if a shaped window is moved or unmapped, the X server must send many Expose events to each exposed window to describe the shaped region. If the client owning the exposed window processes each event, its performance will be significantly affected. In general, you should avoid repeatedly resizing, moving, or unmapping shaped windows owned by your application. Also, if you expect many Expose events caused by shaped windows, you should write your Expose event handlers to compress the events as much as possible. So, I think that pretty much puts the nail in the coffin of shaped windows for me. Rounded windows have visual appeal because the roundness is more visually appealing. But I find fast pretty appealing too. Anyway, comments welcome. -- Dan Espen
