8000 added traits null ui · matplotlib/matplotlib@89ae6cd · GitHub
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added traits null ui
svn path=/trunk/matplotlib/; revision=977
1 parent e945059 commit 89ae6cd

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‎lib/matplotlib/enthought/resource/__init__.py

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from resource_factory import ResourceFactory
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from resource_manager import ResourceManager
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from resource_path import resource_path

‎lib/matplotlib/enthought/resource/resource_factory.py

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""" Default base-class for resource factories. """
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class ResourceFactory:
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""" Default base-class for resource factories. """
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###########################################################################
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# 'ResourceFactory' interface.
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###########################################################################
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def image_from_file(self, filename):
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""" Creates an image from the data in the specified filename. """
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raise NotImplemented
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def image_from_data(self, data):
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""" Creates an image from the specified data. """
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raise NotImplemented
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#### EOF ######################################################################

‎lib/matplotlib/enthought/resource/resource_manager.py

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""" The default resource manager.
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A resource manager locates and loads application resources such as images and
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sounds etc.
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"""
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# Standard library imports.
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import glob, inspect, operator, os
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from os.path import join
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from zipfile import ZipFile
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# Enthought library imports.
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from matplotlib.enthought.traits import HasTraits, Instance
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from matplotlib.enthought.util.resource import get_path
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# Local imports.
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from resource_factory import ResourceFactory
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from resource_reference import ImageReference
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class ResourceManager(HasTraits):
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""" The default resource manager.
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A resource manager locates and loads application resources such as images
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and sounds etc.
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"""
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# Allowed extensions for image resources.
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IMAGE_EXTENSIONS = ['.png', '.jpg', '.bmp', '.gif', '.ico']
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# The resource factory is responsible for actually creating resources.
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# This is used so that (for example) different GUI toolkits can create
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# a images in the format that they require.
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resource_factory = Instance(ResourceFactory)
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###########################################################################
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# 'ResourceManager' interface.
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###########################################################################
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def locate_image(self, image_name, path):
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""" Locates an image. """
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if not operator.isSequenceType(path):
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path = [path]
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resource_path = []
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for item in path:
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if type(item) is str:
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resource_path.append(item)
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else:
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resource_path.extend(self._get_resource_path(item))
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return self._locate_image(image_name, resource_path)
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def load_image(self, image_name, path):
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""" Loads an image. """
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reference = self.locate_image(image_name, path)
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if reference is not None:
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image = reference.load()
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else:
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image = None
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return image
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###########################################################################
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# Private interface.
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###########################################################################
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def _locate_image(self, image_name, resource_path):
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""" Attempts to locate an image resource.
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If the image is found, an image resource reference is returned.
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If the image is NOT found None is returned.
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"""
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# If the image name contains a file extension (eg. '.jpg') then we will
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# only accept an an EXACT filename match.
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basename, extension = os.path.splitext(image_name)
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if len(extension) > 0:
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extensions = [extension]
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pattern = image_name
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# Otherwise, we will search for common image suffixes.
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else:
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extensions = self.IMAGE_EXTENSIONS
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pattern = image_name + '.*'
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for dirname in resource_path:
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# Try the 'images' sub-directory first (since that is commonly
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# where we put them!). If the image is not found there then look
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# in the directory itself.
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for path in ['images', '']:
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# Is there anything resembling the image name in the directory?
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filenames = glob.glob(join(dirname, path, pattern))
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for filename in filenames:
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not_used, extension = os.path.splitext(filename)
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if extension in extensions:
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reference = ImageReference(
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self.resource_factory, filename=filename
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)
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return reference
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# Is there an 'images' zip file in the directory?
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zip_filename = join(dirname, 'images.zip')
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if os.path.isfile(zip_filename):
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zip_file = ZipFile(zip_filename, 'r')
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# Try the image name itself, and then the image name with
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# common images suffixes.
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for extension in extensions:
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try:
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image_data = zip_file.read(basename + extension)
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reference = ImageReference(
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self.resource_factory, data=image_data
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)
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return reference
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except:
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pass
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return None
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def _get_resource_path(self, object):
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""" Returns the resource path for an object. """
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if hasattr(object, 'resource_path'):
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resource_path = object.resource_path
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else:
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resource_path = self._get_default_resource_path(object)
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return resource_path
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def _get_default_resource_path(self, object):
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""" Returns the default resource path for an object. """
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resource_path = []
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for klass in inspect.getmro(object.__class__):
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try:
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resource_path.append(get_path(klass))
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# We get an attribute error when we get to a C extension type (in
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# our case it will most likley be 'CHasTraits'. We simply ignore
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# everything after this point!
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except AttributeError:
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break
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return resource_path
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#### EOF ######################################################################

‎lib/matplotlib/enthought/resource/resource_path.py

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""" Returns a resource path based on the call stack.
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This type of resource path is normally requested from the constructor for an
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object whose resources are relative to the module constructing the object.
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"""
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# Standard library imports.
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import sys
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from inspect import stack
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from os.path import dirname, exists
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from os import getcwd
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def resource_path ( level = 2 ):
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"""Returns a resource path calculated from the caller's stack.
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"""
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module = stack( level )[ level ][0].f_globals[ '__name__' ]
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if module != '__main__':
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# Return the path to the module:
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return dirname( getattr( sys.modules.get( module ), '__file__' ) )
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# '__main__' is not a real module, so we need a work around:
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for path in [ dirname( sys.argv[0] ), getcwd() ]:
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if exists( path ):
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break
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return path
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#### EOF ######################################################################

‎lib/matplotlib/enthought/resource/resource_reference.py

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""" Resource references. """
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# Enthought library imports.
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from matplotlib.enthought.traits import Any, HasTraits, Instance
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# Local imports.
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from resource_factory import ResourceFactory
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class ResourceReference(HasTraits):
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""" Abstract base class for resource references.
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Resource references are returned from calls to 'locate_reference' on the
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resource manager.
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"""
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# The resource factory that will be used to load the resource.
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resource_factory = Instance(ResourceFactory) # ReadOnly
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###########################################################################
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# 'ResourceReference' interface.
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###########################################################################
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def load(self):
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""" Loads the resource. """
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raise NotImplementedError
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class ImageReference(ResourceReference):
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""" A reference to an image resource. """
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# Iff the image was found in a file then this is the name of that file.
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filename = Any # ReadOnly
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# Iff the image was found in a zip file then this is the image data that
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# was read from the zip file.
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data = Any # ReadOnly
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def __init__(self, resource_factory, filename=None, data=None):
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""" Creates a new image reference. """
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self.resource_factory = resource_factory
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self.filename = filename
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self.data = data
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return
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###########################################################################
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# 'ResourceReference' interface.
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###########################################################################
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def load(self):
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""" Loads the resource. """
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if self.filename is not None:
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image = self.resource_factory.image_from_file(self.filename)
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elif self.data is not None:
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image = self.resource_factory.image_from_data(self.data)
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else:
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raise ValueError("Image reference has no filename OR data")
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return image
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#### EOF ######################################################################

‎lib/matplotlib/enthought/traits/ui/__init__.py

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#-------------------------------------------------------------------------------
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#
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# Export the symbols defined by the traits.ui package.
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#
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# Written by: David C. Morrill
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#
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# Date: 10/07/2004
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#
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# (c) Copyright 2004 by Enthought, Inc.
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#
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# Imports:
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#-------------------------------------------------------------------------------
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from handler import Handler, default_handler
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from view import View
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from group import Group
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from ui_info import UIInfo
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from help import on_help_call
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from include import Include
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from item import Item
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from editor_factory import EditorFactory
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from editor import Editor
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from toolkit import toolkit
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from view_element import ViewElement, ViewSubElement
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from help_template import help_template
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from tree_node import TreeNode, ObjectTreeNode, TreeNodeObject
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from editors import BooleanEditor, ButtonEditor, CheckListEditor, \
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CodeEditor, ColorEditor, RGBColorEditor, RGBAColorEditor, CompoundEditor, \
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DirectoryEditor, EnumEditor, FileEditor, FontEditor, KivaFontEditor, \
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ImageEnumEditor, InstanceEditor, ListEditor, PlotEditor, RangeEditor, \
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TextEditor, TreeEditor, TupleEditor
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from editors import ColorTrait, RGBColorTrait, RGBAColorTrait, \
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EnableRGBAColorEditor, FontTrait, KivaFontTrait
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import view_elements
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