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57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
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# A FormSplit lets you place its children exactly where you want them
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# (including silly places!).
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# It does no explicit geometry management except moving its children
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# when it is moved.
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# The interface to place children is as follows.
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# Before you add a child, you may specify its (left, top) position
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# relative to the FormSplit. If you don't specify a position for
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# a child, it goes right below the previous child; the first child
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# goes to (0, 0) by default.
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# NB: This places data attributes named form_* on its children.
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# XXX Yes, I know, there should be options to do all sorts of relative
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# placement, but for now this will do.
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from Split import Split
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class FormSplit() = Split():
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#
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def create(self, parent):
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self.next_left = self.next_top = 0
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self.last_child = None
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return Split.create(self, parent)
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#
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def minsize(self, m):
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max_width, max_height = 0, 0
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for c in self.children:
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c.form_width, c.form_height = c.minsize(m)
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max_width = max(max_width, c.form_width + c.form_left)
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max_height = max(max_height, c.form_height + c.form_top)
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return max_width, max_height
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#
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def getbounds(self):
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return self.bounds
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#
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def setbounds(self, bounds):
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self.bounds = bounds
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fleft, ftop = bounds[0]
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for c in self.children:
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left, top = c.form_left + fleft, c.form_top + ftop
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right, bottom = left + c.form_width, top + c.form_height
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c.setbounds((left, top), (right, bottom))
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#
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def placenext(self, (left, top)):
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self.next_left = left
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self.next_top = top
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self.last_child = None
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#
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def addchild(self, child):
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if self.last_child:
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width, height = \
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self.last_child.minsize(self.beginmeasuring())
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self.next_top = self.next_top + height
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child.form_left = self.next_left
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child.form_top = self.next_top
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Split.addchild(self, child)
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self.last_child = child
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#
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