blends in and won't be mistaken for a button.
- Makefile: generate icon XPMs with transparent background
- gui_util.c (make_image): set transparency color to white
- gui_util.c (make_transparent_image): new function to return a transparent
image created from an XPM
- gui_tool.c (get_icon_by_inst): make the returned image transparent instead of
opaque
- icons/vec.fig, icons/arc.fig, icons/line.fig, icons/rect.fig, icons/circ.fig:
darkened to increase contrast on grey background
git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5758 99fdad57-331a-0410-800a-d7fa5415bdb3