Progress Bar Example¶

#------------------------------------------------------------------------------
# Copyright (c) 2013, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#------------------------------------------------------------------------------
""" An example of the 'ProgressBar' widget.

This example demonstrates the use the `ProgressBar` widget by hooking
it up to a `PushButton` widgets which simulates a work update.

<< autodoc-me >>
"""
import random
from enaml.layout.api import hbox, align
from enaml.widgets.api import (
    Window, Container, ProgressBar, Label, PushButton
)


enamldef Main(Window):
    title = 'Progress Bar'
    Container:
        constraints = [
            hbox(work_button, progress, label),
            align('v_center', work_button, progress, label),
        ]
        ProgressBar: progress:
            pass
        Label: label:
            text << '{0}% ({1}/{2})'.format(progress.percentage, progress.value, progress.maximum)
        PushButton: work_button:
            text << "Do Some Work" if progress.percentage < 100 else "Reset"
            clicked ::
                if progress.percentage < 100:
                    val = progress.value + random.randint(0, 10)
                    progress.value = min(val, 100)
                else:
                    progress.value = 0