62 lines
2.4 KiB
Python
62 lines
2.4 KiB
Python
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#!/usr/bin/env python
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#coding:utf-8
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# Author: mozman --<mozman@gmx.at>
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# Purpose: svg image element
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# Created: 09.10.2010
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# Copyright (C) 2010, Manfred Moitzi
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# License: MIT License
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from svgwrite.base import BaseElement
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from svgwrite.mixins import Transform, _vert, _horiz, Clipping
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class Image(BaseElement, Transform, Clipping):
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""" The **image** element indicates that the contents of a complete file are
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to be rendered into a given rectangle within the current user coordinate
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system. The **image** element can refer to raster image files such as PNG
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or JPEG or to files with MIME type of "image/svg+xml".
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"""
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elementname = 'image'
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def __init__(self, href, insert=None, size=None, **extra):
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"""
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:param string href: hyperlink to the image resource
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:param 2-tuple insert: insert point (**x**, **y**)
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:param 2-tuple size: (**width**, **height**)
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:param dict attribs: additional SVG attributes
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:param extra: additional SVG attributs as keyword-arguments
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"""
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super(Image, self).__init__(**extra)
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self['xlink:href'] = href
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if insert is not None:
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self['x'] = insert[0]
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self['y'] = insert[1]
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if size is not None:
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self['width'] = size[0]
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self['height'] = size[1]
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def stretch(self):
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""" Stretch viewBox in x and y direction to fill viewport, does not
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preserve aspect ratio.
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"""
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self['preserveAspectRatio'] = 'none'
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def fit(self, horiz="center", vert="middle", scale="meet"):
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""" Set the preserveAspectRatio attribute.
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:param string horiz: horizontal alignment ``'left'|'center'|'right'``
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:param string vert: vertical alignment ``'top'|'middle'|'bottom'``
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:param string scale: scale method ``'meet'|'slice'``
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============= ===========
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Scale methods Description
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============= ===========
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``meet`` preserve aspect ration and zoom to limits of viewBox
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``slice`` preserve aspect ration and viewBox touch viewport on all bounds, viewBox will extend beyond the bounds of the viewport
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============= ===========
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"""
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if self.debug and scale not in ('meet', 'slice'):
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raise ValueError("Invalid scale parameter '%s'" % scale)
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self.attribs['preserveAspectRatio'] = "%s%s %s" % (_horiz[horiz],_vert[vert], scale)
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