* moves the idea of the size of the item up to LayoutItem, as both Widget and Layout implemented it separately
* provides a way in LayoutItem to adjust a rect within an item to its margins (that is what LayoutItem::topLeft() is there for)
* fix several bugs, both painting and sizing, in LineEdit
* Applet sets margins now based on the existence of setDrawBackground
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=776380
otherwise the updated layout doesn't take effect. This means that it really
does need to be called from relayout(). So to prevent a quasi-infinite loop,
don't restart the timeline if it's already running.
This fixes the tasks geometry not updating correctly when applets are added
to the panel.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=754148
* widgets should let Widget handle sizing, geometry unless there are very good reasons for it
* don't relayout the parent layout if the parent layout is already relayouting, because that relayout will have called the child's relayout in the first place. get it? relayout!
* i can dance. we can dance. do the relayout dance.
* some style guide fixes
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=738957
* introduce relayout() which does only that
* place guards around relayout() calls in Layout class to prevent recursion
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=738923
