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# Shift current selection by given x y amounts using optional mode.
# Author: Andrew Trevorrow (andrew@trevorrow.com), June 2006.
# Updated to use exit command, Nov 2006.
from glife import validint, inside
from string import lower
import golly as g
selrect = g.getselrect()
if len(selrect) == 0: g.exit("There is no selection.")
answer = g.getstring("Enter x y shift amounts and an optional mode\n" +
"(valid modes are copy/or/xor, default is or):",
"0 0 or",
"Shift selection")
xym = answer.split()
# extract x and y amounts
if len(xym) == 0: g.exit()
if len(xym) == 1: g.exit("Supply x and y amounts separated by a space.")
if not validint(xym[0]): g.exit("Bad x value: " + xym[0])
if not validint(xym[1]): g.exit("Bad y value: " + xym[1])
x = int(xym[0])
y = int(xym[1])
# extract optional mode
if len(xym) > 2:
mode = lower(xym[2])
if mode=="c": mode="copy"
if mode=="o": mode="or"
if mode=="x": mode="xor"
if not (mode == "copy" or mode == "or" or mode == "xor"):
g.exit("Unknown mode: " + xym[2] + " (must be copy/or/xor)")
else:
mode = "or"
# this method cuts the current selection and pastes it into the
# new position (without changing the current clipboard pattern)
selcells = g.getcells(selrect)
g.clear(inside)
selrect[0] += x
selrect[1] += y
g.select(selrect)
if mode == "copy":
g.clear(inside)
g.putcells(selcells, x, y, 1, 0, 0, 1, mode)
if not g.visrect(selrect): g.fitsel()
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