Converserely, when the icon is clicked, the icon needs to be hidden on the backgound and the window needs to be restored in its current state (which may be different than the state of the window at the time it was iconified.
Squashed commit of the following:
graphics/: Add checks in all places that I can think to avoid doing something stupid with hidden windows
Improve some naming
Add a new file missing in last commit.
graphics/: Initial, incomplete support for hiding windows.
graphics/nxbe/nxbe_bitmap.c: Fix another coordinate system problem.
graphics/: Review use of device coordinate system with window frambebuffer and make fixes accordingly.
graphics/nxbe/nxbe_fill.c: Fix a coordinate system bug. Was trying to update the window fraembuffer using the device coordinate system. Need to use the relative coordinate system.
graphics/: Use DEBUGASSERT instead of return an error since the is no user to handle the errors within the NX server. Use CONFIG_DEBUG_GRAPHICS instead of CONFIG_DEBUG_FEATURES in most cases.
graphics/: Nothing under graphics/ should set the errno.
Squashed commit of the following:
Update TODO list
graphics/nxbe: The moverectangle renderer now supports updates to the per-window framebuffer (unclipped) as well as the graphics device memory (clipped).
graphics/nxbe: The filltrapezond renderer now supports updates to the per-window framebuffer (unclipped) as well as the graphics device memory (clipped).
graphics/nxbe: The getrectangle method now returns data from the per-window framebuffer if available.
graphics/nxbe: The fillrectangle renderer now supports updates to the per-window framebuffer (unclipped) as well as the graphics device memory (clipped).
graphics/nxmu: If a window supports a per-window framebuffer, then redraw callbacks are suppressed and the device content is updated from the shadow, per-window framebuffer. graphics/nxbe: The copyrectangle renderer now supports updates to the per-window framebuffer (unclipped) as well as the graphics device memory (clipped).
graphics/nxbe/nxbe_setsize.c: Reallocate the per-window framebuffer when the window size changes.
