New trunk

bzr revid: pinky-3f10ee12cea3c4c75cef44ab04ad33ef47432907

1 files changed, 78 insertions, 0 deletions

diff --git a/bin/pychart/zap.py b/bin/pychart/zap.py
new file mode 100644
index 00000000000..2c8672c65c6
--- /dev/null
+++ b/bin/pychart/zap.py
@@ -0,0 +1,78 @@
+#
+# 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)
+