This patch adds the possibility to update the state of a layout modifier when
modifying the underlying layout before it is run(i.e. using modifyLayout).
The modified state is also passed to the subsequent call of redoLayout, whose
return takes precedence if both functions return modified states of the layout
modifier.
* Added a XMonad.Util.Image module to manipulate simple images
and show them into an X drawable
* Added the possibility of using image buttons instead of plain
text buttons into the title bar
* Added a XMonad.Layout.ImageButtonDecoration as an example of
how to use the image buttons
nameTail behaves slightly different if there are whitespace before the first word or the name contains tabs or other such whitespace. But I expect few users are affected since the only usecase where nameTail is actually needed is to remove automatically added prefixes. These prefixes will be removed as they should by the new implementation.
There were two bugs:
1. The layout modifier assumed the rect's x was zero.
2. The layout modifier assumed that the stackset's focus actually had focus.
This patch will allow the user to split the currently focused screen instead of all screens together. This is usefull for multiscreen users who have functioning xinerama, but wish to split one of the screens.
The problem was that certain layouts keep their "world" state in their value,
which was thrown away and forgotten after ReleaseResources during toggle.
In particular, decorated layouts store some X11 handles in them and
allocate/deallocate it as appropriate. If any modification to their state is
ignored, they may try to deallocate already deallocated memory, which results
in a crash somewhere inside Xlib.
This patch makes Transformers reversible so that nothing is ever ignored. As a
side effect, layout transformers now do receive messages and messages for the
base layout do not need the undo/reapply cycle -- we just pass messages to the
current transformed layout and unapply the transformer when needed.
(This, however, doesn't mean that the base layout is not asked to release
resources on a transformer change -- we still need the transformer to release
its resources and there's no way to do this without asking the base layout as
well.)
The description for mirrored MouseResizableTile is now "Mirror
MouseResizableTile", to follow the standard of other layouts that can be
mirrored using the Mirror modifier.
