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#------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
""" An example which demonstrates the use of the `align` layout helper.
In this example, we use the `align` layout helper to align various
constraints of the children of a container. The layout consists of
a Field pinned to the top of the Container. Below the Field are two
PushButtons each of which have their `left` boundary aligned. The
top PushButton is then aligned with the `h_center` of the Field.
<< autodoc-me >>
"""
from enaml.layout.api import align
from enaml.widgets.api import Window, Container, Field, PushButton
enamldef Main(Window):
Container:
constraints = [
# Align the left edges of both PushButtons.
align('left', pb1, pb2),
# Align the top button with the center of the field.
align('h_center', fld, pb1),
# Pin the Field to the top of the Container. This is
# orthogonal to the use of `align` for this example,
# but is needed to have a well constrained system.
contents_top == fld.top, contents_left == fld.left,
contents_right == fld.right,
# Setup the vertical constraints for the widgets. This is
# orthogonal to the use of `align` for this example, but
# is needed to have a well constrained system.
fld.bottom + 10 == pb1.top, pb1.bottom + 10 == pb2.top,
pb2.bottom <= contents_bottom,
]
Field: fld:
pass
PushButton: pb1:
text = 'Long Name Foo'
PushButton: pb2:
text = 'Bar'
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