From a19a216bc60160c162e616145ef091dd18ce4e61 Mon Sep 17 00:00:00 2001
From: Skip Montanaro <skip.montanaro@gmail.com>
Date: Tue, 16 Feb 2021 14:40:46 -0600
Subject: Python 0.9.1 as posted in alt.sources

---
 lib/HVSplit.py | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 lib/HVSplit.py

(limited to 'lib/HVSplit.py')

diff --git a/lib/HVSplit.py b/lib/HVSplit.py
new file mode 100644
index 0000000..d52af8e
--- /dev/null
+++ b/lib/HVSplit.py
@@ -0,0 +1,56 @@
+# HVSplit contains generic code for HSplit and VSplit.
+# HSplit and VSplit are specializations to either dimension.
+
+# XXX This does not yet stretch/shrink children if there is too much
+# XXX or too little space in the split dimension.
+# XXX (NB There is no interface to ask children for stretch preferences.)
+
+from Split import Split
+
+class HVSplit() = Split():
+ #
+ def create(self, (parent, hv)):
+ # hv is 0 or 1 for HSplit or VSplit
+ self = Split.create(self, parent)
+ self.hv = hv
+ return self
+ #
+ def minsize(self, m):
+ hv, vh = self.hv, 1 - self.hv
+ size = [0, 0]
+ for c in self.children:
+ csize = c.minsize(m)
+ if csize[vh] > size[vh]: size[vh] = csize[vh]
+ size[hv] = size[hv] + csize[hv]
+ return size[0], size[1]
+ #
+ def getbounds(self):
+ return self.bounds
+ #
+ def setbounds(self, bounds):
+ self.bounds = bounds
+ hv, vh = self.hv, 1 - self.hv
+ mf = self.parent.beginmeasuring
+ size = self.minsize(mf())
+ # XXX not yet used! Later for stretching
+ maxsize_hv = bounds[1][hv] - bounds[0][hv]
+ origin = [self.bounds[0][0], self.bounds[0][1]]
+ for c in self.children:
+ size = c.minsize(mf())
+ corner = [0, 0]
+ corner[vh] = bounds[1][vh]
+ corner[hv] = origin[hv] + size[hv]
+ c.setbounds((origin[0], origin[1]), \
+ (corner[0], corner[1]))
+ origin[hv] = corner[hv]
+ # XXX stretch
+ # XXX too-small
+ #
+
+class HSplit() = HVSplit():
+ def create(self, parent):
+ return HVSplit.create(self, (parent, 0))
+
+class VSplit() = HVSplit():
+ def create(self, parent):
+ return HVSplit.create(self, (parent, 1))
-- 
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