def testExpand(self):
"""Sizeable.allocateSize checks the expandability."""
big_width = size.SizeAllocation((0, 0), (100, 20))
big_height = size.SizeAllocation((0, 0), (10, 200))
widget = MockWidget(10, 20)
widget.requestSize(True)
widget.can_expand_width = False
widget.can_expand_height = False
self.assertRaises(sizeable.ExpandError,
widget.allocateSize, big_width)
self.assertRaises(sizeable.ExpandError,
widget.allocateSize, big_height)
widget.can_expand_width = True
widget.can_expand_height = False
widget.allocateSize(big_width)
self.assertRaises(sizeable.ExpandError,
widget.allocateSize, big_height)
widget.can_expand_width = False
widget.can_expand_height = True
self.assertRaises(sizeable.ExpandError,
widget.allocateSize, big_width)
widget.allocateSize(big_height)
widget.can_expand_width = True
widget.can_expand_height = True
widget.allocateSize(big_width)
widget.allocateSize(big_height)
def testAllocateSizeTooBigNoExpand(self):
"""BorderLayout.allocateSize expands the margins."""
my_layout = borderlayout.BorderLayout((1, 2, 3, 4))
child = MockWidget(10, 20)
child.can_expand_width = False
child.can_expand_height = False
child.requestSize(True)
allocated_size = SizeAllocation((100, 200), (30, 50))
my_layout.allocateSize(allocated_size, None, [child])
child_size = child.allocated_size
# The child does not expand: its size is nominal but the position not.
#
# Horizontal margin: 30 - 10 = 20.
# The original margins are 1 and 3, total 4.
# ratio = 20 / 4 = 5.
# New margins are 1 * 5 = 5 and 3 * 5 = 15.
# Check: 5 + 15 = 50.
# The child's left is after the first margin: 5.
#
# Vertical margin: 50 - 20 = 30.
# The original margins are 2 and 4, total 6.
# ratio = 30 / 6 = 5.
# New margins are 2 * 5 = 10 and 4 * 5 = 20.
# Check: 10 + 20 = 30.
# The child's top is after the first margin: 10.
self.assertEquals(child_size.pos.asTuple(), (105, 210))
self.assertEquals(child_size.size.asTuple(), (10, 20))
def testAllocateSizeTooBigExpand(self):
"""BorderLayout.allocateSize expands the child."""
my_layout = borderlayout.BorderLayout((1, 2, 3, 4))
child = MockWidget(10, 20)
child.can_expand_width = True
child.can_expand_height = True
child.requestSize(True)
allocated_size = SizeAllocation((100, 200), (30, 50))
my_layout.allocateSize(allocated_size, None, [child])
child_size = child.allocated_size
# The child expands, so only its size changes. Its location doesn't.
self.assertEquals(child_size.pos.asTuple(), (101, 202))
self.assertEquals(child_size.size.asTuple(), (30 - 4, 50 - 6))
