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