Re: redraw_rect

I've commited those changes now, we seem to have some problem with the 
SDL backend (iam quite sure it is the backend), to me it appears as if 
the surface::update command doesnt work ok with not fullscreen updates.
Need to investigate though, i havent got the time to look into 
surface_sdl atm!

Marc Strämke wrote:
> Iam going to remove redraw_rect from the container if noone objects :)
> Basicly the concept of having a redraw rect in each container/widget is 
> borked, it is only a transient value which has to be passed upwards to 
> application when redraw is called, so the only object which needs to 
> maintain a redraw rect is application, otherwise many things dont really 
> work because for example if i call current_state->redraw(rect()); then 
> the user expects that the whole state is redrawed, but in the children's 
> redraw rects there is the information missing that a redraw is neccesary 
> and so no redraw takes place (IMO this is what's happening in test app 
> with sdl (no initial screen update)). The right way to do the screen 
> updating would be simply to pass upwards the redraw rectangle on the 
> stack, and only applications stores it. When Draw is called, the drawing 
> routines will get the redraw rectangle as the cliprect parameter and 
> decide for themselfes if redrawing is necessary, without using local state.