Disable rounding effect when window is tiled

[SilverMarcs]

Currently corners are still rounded when a window is tiled on either side and/or quarter of screen. This is especially distracting when two windows are tiled side by side as it introduces this gap:

Additionally, it adds the following effect in the active window:

[a-parhom]

The problem with black corners near the edge of the screen is fixed in the branch 'precache_shadows'. It may need some more performance optimization though, so not merged to master right now (see issue #15).

For now I have not found a solution for verifying if a window is tiled. If I'll find it in future, I'll add an option for disabling the effect for tiled windows.

[SilverMarcs]

I'll check that branch out. I wonder if would it be possible to round off window the edge of an window thats touching the monitor and squaring off the edge of window thats tiled against another window

[a-parhom]

I don't think it's even possible to do it that way. All that could be done here is to make the effect skip processing of tiled windows.

[matinlotfali]

The tiling is supported in https://github.com/matinlotfali/KDE-Rounded-Corners