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#
# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
#
# Jockey is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# Jockey is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
import fill_style
import line_style
import copy
def _draw_zap(can, p1, p2, style, pat):
x = copy.deepcopy(p1)
x.extend(p2)
can.polygon(None, pat, x)
can.lines(style, p1)
can.lines(style, p2)
def zap_horizontally(can, style, pat, x1, y1, x2, y2, xsize, ysize):
"""Draw a horizontal "zapping" symbol on the canvas that shows
that a graph is ripped in the middle.
Parameter <fill_style> specifies the style for the zig-zag lines.
PAT specifies the pattern with which the area is filled.
The symbol is drawn in the rectangle (<x1>, <y1>) - (<x2>, <y2>).
Each "zigzag" has the width <xsize>, height <ysize>."""
assert isinstance(style, line_style.T)
assert isinstance(pat, fill_style.T)
points = []
points2 = []
x = x1
y = y1
while x < x2:
points.append((x, y))
points2.append((x, y + (y2-y1)))
x += xsize
if y == y1:
y += ysize
else:
y -= ysize
points2.reverse()
_draw_zap(can, points, points2, style, pat)
def zap_vertically(can, style, pat, x1, y1, x2, y2, xsize, ysize):
"""Draw a vertical "zapping" symbol on the canvas that shows
that a graph is ripped in the middle.
Parameter <fill_style> specifies the style for the zig-zag lines.
PAT specifies the pattern with which the area is filled.
The symbol is drawn in the rectangle (<x1>, <y1>) - (<x2>, <y2>).
Each "zigzag" has the width <xsize>, height <ysize>."""
points = []
points2 = []
x = x1
y = y1
while y < y2:
points.append((x, y))
points2.append((x + (x2-x1), y))
y += ysize
if x == x1:
x += xsize
else:
x -= xsize
points2.reverse()
_draw_zap(can, points, points2, style, pat)