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#!/usr/bin/env python
""" This is a simple test envisage3 application to demonstrate how one
can use TVTK's scene and browser plugins to create a simple application.
"""
# Author: Prabhu Ramachandran <prabhu_r@users.sf.net>
# Copyright (c) 2008, Enthought, Inc.
# License: BSD Style.
# Standard library imports.
import os.path
import logging
# Enthought library imports.
from apptools.logger.api import LogFileHandler, FORMATTER
from traits.etsconfig.api import ETSConfig
from traits.api import List
from envisage.api import Plugin
from envisage.ui.workbench.api import WorkbenchApplication
from envisage.core_plugin import CorePlugin
from envisage.ui.workbench.workbench_plugin import WorkbenchPlugin
from envisage.plugins.python_shell.python_shell_plugin import PythonShellPlugin
from tvtk.plugins.scene.scene_plugin import ScenePlugin
from tvtk.plugins.scene.ui.scene_ui_plugin import SceneUIPlugin
from tvtk.plugins.browser.browser_plugin import BrowserPlugin
from pyface.workbench.api import Perspective, PerspectiveItem
logger = logging.getLogger()
###############################################################################
# `TestPerspective` class.
###############################################################################
class TestPerspective(Perspective):
""" An default perspective for the app. """
# The perspective's name.
name = 'Test'
# Should this perspective be enabled or not?
enabled = True
# Should the editor area be shown in this perspective?
show_editor_area = True
# View IDs.
BROWSER_VIEW = 'tvtk.plugins.browser.browser_view.BrowserView'
SHELL_VIEW = 'envisage.plugins.python_shell.view.python_shell_view.PythonShellView'
# The contents of the perspective.
contents = [
PerspectiveItem(id=BROWSER_VIEW, position='left'),
PerspectiveItem(id=SHELL_VIEW, position='bottom')
]
###############################################################################
# `MyPlugin` class.
###############################################################################
class MyPlugin(Plugin):
# Extension points we contribute to.
PERSPECTIVES = 'envisage.ui.workbench.perspectives'
# The plugin's unique identifier.
id = 'tvtk_example_plugin'
# The plugin's name (suitable for displaying to the user).
name = 'TVTK example plugin'
# Perspectives.
perspectives = List(contributes_to=PERSPECTIVES)
def _perspectives_default(self):
""" Trait initializer. """
return [TestPerspective]
###############################################################################
# Useful functions.
###############################################################################
def setup_logger(logger, fname, stream=True, mode=logging.ERROR):
"""Setup a log file and the logger in `ETSConfig.application_home`.
Parameters:
-----------
fname -- file name the logger should use.
stream -- Add a stream handler.
mode -- the logging mode.
"""
path = os.path.join(ETSConfig.application_home, fname)
handler = LogFileHandler(path)
logger.addHandler(handler)
if stream:
s = logging.StreamHandler()
s.setFormatter(FORMATTER)
s.setLevel(mode)
logger.addHandler(s)
logger.info("*"*80)
logger.info("logfile is: '%s'", os.path.abspath(path))
logger.info("*"*80)
def bind_object(value, app):
"""Binds the scene manager service to the Python shell."""
if not value:
# value is False when the GUI is stopped.
return
id = 'envisage.plugins.python_shell.view.python_shell_view.PythonShellView'
py = app.workbench.active_window.get_view_by_id(id)
id = 'tvtk.plugins.scene.i_scene_manager.ISceneManager'
sm = app.workbench.active_window.get_service(id)
if py is not None:
py.bind('scene_manager', sm)
def main():
"""The main application is created and launched here."""
# Setup the logger.
plugins = [CorePlugin(),
WorkbenchPlugin(),
MyPlugin(),
ScenePlugin(),
SceneUIPlugin(),
BrowserPlugin(),
PythonShellPlugin(),
]
# Create an Envisage application.
id = 'tvtk.examples.plugins.test'
application = WorkbenchApplication(id=id,
plugins = plugins
)
# This needs to be done here since the ETSConfig.application_home is
# not set correctly up to this point.
setup_logger(logger, 'test.log', mode=logging.DEBUG)
application.gui.on_trait_change(lambda value: bind_object(value, application),
'started')
# Start the application.
application.run()
if __name__ == '__main__':
main()
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