def scroll(axis_side):
axis, side = literal_eval(axis_side)
#print "axis, side", axis, side,
side = -1 if side == 0 else 1
diff = P(50 * side, 0) if axis == 0 else P(0, 50 * side)
#print diff
scale = get_scale(doc['drawing'], "zoom")
xy = get_translate(doc['drawing'], "scroll_xy") + diff / scale
doc['drawing.transforms.scroll_xy'] = ("translate", xy)
def zoom(out):
# Should conjugate by current mouse position
out = literal_eval(out)
zoom = get_scale(doc["drawing"], "zoom") / 1.25 if out else\
get_scale(doc["drawing"], "zoom") * 1.25
doc["drawing"].transforms["zoom"] = ("scale", zoom)