8a37852f48
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3230 fd906abe-77d9-0310-91a1-e0d9ade77398
84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
#
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# Copyright (c) 2008 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Media asset management interface definitions.
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$Id$
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"""
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from zope.interface import Interface, Attribute
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from zope.i18nmessageid import MessageFactory
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from zope import schema
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_ = MessageFactory('cybertools.media')
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class IMediaAsset(Interface):
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modified = schema.Date(
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title=_(u'Date'),
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description=_(u'The date/time the picture was taken.'),
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required=False,)
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def getData(variant=None):
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""" Return the binary data of the media asset or one of its variants.
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"""
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def getContentType(variant=None):
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""" Return the mime-formatted content type of the media asset
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or one of its variants.
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"""
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def transform(rules):
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""" Generate user-defined transformed variants of the media asset
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according to the rules given.
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"""
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class IFileTransform(Interface):
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""" Transformations using files in the filesystem.
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"""
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def open(path):
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""" Open the image under the given filename.
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"""
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def save(path, mimetype):
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""" Save the image under the given filename.
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"""
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def rotate(rotangle):
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""" Return a copy of an image rotated the given number of degrees
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counter clockwise around its centre.
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"""
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def color(mode):
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""" Create image with specified color mode (e.g. 'greyscale').
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"""
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def crop(relWidth, relHeight, alignX=0.5, alignY=0.5):
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""" Return a rectangular region from the current image. The box is defined
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by a relative width and a relative height defining the crop aspect
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as well as a horizontal (x) and a verical (y) alignment parameters.
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"""
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def resize(width, height):
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""" Modify the image to contain a thumbnail version of itself, no
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larger than the given size.
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"""
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