Align Offset Example

An example of the align layout helper with inter-element offsets.

This is example is nearly identical to the align.enaml example. This example adds to the other by showing how the align layout helper accepts spacing offsets for its layout items.

Tip

To see this example in action, download it from align_offset and run:

$ enaml-run align_offset.enaml

Screenshot

Example Enaml Code

#------------------------------------------------------------------------------
# Copyright (c) 2013, 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 of the `align` layout helper with inter-element offsets.

This is example is nearly identical to the `align.enaml` example. This
example adds to the other by showing how the `align` layout helper
accepts spacing offsets for its layout items.

<< 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 with a relative
            # offset between them.
            align('left', pb1, 20, pb2),

            # Align the top button with the center of the field with
            # a relative offset between them.
            align('h_center', fld, 50, 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'