def _load_svg(self, value):
manager = getManager(self.context)
width = self.context.element.get('width')
if width is not None:
width = Measurement().fromUnicode(width)
height = self.context.element.get('height')
if height is not None:
height = Measurement().fromUnicode(height)
preserve = self.context.element.get('preserveAspectRatio')
if preserve is not None:
preserve = Boolean().fromUnicode(preserve)
cache_key = f'{value}-{width}x{height}-{preserve}'
if cache_key in manager.svgs:
return manager.svgs[cache_key]
from gzip import GzipFile
from xml.etree import cElementTree
from reportlab.graphics import renderPM
from z3c.rml.svg2rlg import Renderer
fileObj = super().fromUnicode(value)
svg = fileObj.getvalue()
if svg[:2] == b'\037\213':
svg = GzipFile(fileobj=fileObj).read()
svg = cElementTree.fromstring(svg)
svg = Renderer(value).render(svg)
if preserve:
if width is not None or height is not None:
if width is not None and height is None:
height = svg.height * width / svg.width
elif height is not None and width is None:
width = svg.width * height / svg.height
elif float(width) / height > float(svg.width) / svg.height:
width = svg.width * height / svg.height
else:
height = svg.height * width / svg.width
else:
if width is None:
width = svg.width
if height is None:
height = svg.height
svg.scale(width / svg.width, height / svg.height)
svg.width = width
svg.height = height
svg = renderPM.drawToPIL(svg, dpi=300)
svg = reportlab.lib.utils.ImageReader(svg)
# A hack to getImageReader through as an open Image when used with
# imageAndFlowables
svg.read = True
manager.svgs[cache_key] = svg
return svg
def _load_svg(self, value):
manager = getManager(self.context)
width = self.context.element.get('width')
if width is not None:
width = Measurement().fromUnicode(width)
height = self.context.element.get('height')
if height is not None:
height = Measurement().fromUnicode(height)
preserve = self.context.element.get('preserveAspectRatio')
if preserve is not None:
preserve = Boolean().fromUnicode(preserve)
cache_key = '%s-%sx%s-%s' % (value, width, height, preserve)
if cache_key in manager.svgs:
return manager.svgs[cache_key]
from gzip import GzipFile
from reportlab.graphics import renderPM
from xml.etree import cElementTree
from z3c.rml.svg2rlg import Renderer
fileObj = super(Image, self).fromUnicode(value)
svg = fileObj.getvalue()
if svg[:2] == b'\037\213':
svg = GzipFile(fileobj=fileObj).read()
svg = cElementTree.fromstring(svg)
svg = Renderer(value).render(svg)
if preserve:
if width is not None or height is not None:
if width is not None and height is None:
height = svg.height * width / svg.width
elif height is not None and width is None:
width = svg.width * height / svg.height
elif float(width) / height > float(svg.width) / svg.height:
width = svg.width * height / svg.height
else:
height = svg.height * width / svg.width
else:
if width is None:
width = svg.width
if height is None:
height = svg.height
svg.scale(width / svg.width, height / svg.height)
svg.width = width
svg.height = height
svg = renderPM.drawToPIL(svg, dpi=300)
svg = reportlab.lib.utils.ImageReader(svg)
svg.read = True # A hack to get ImageReader through as an open Image
# when used with imageAndFlowables
manager.svgs[cache_key] = svg
return svg
