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Gracefully handle unreferenced gradients with --keep-unreferenced-defs (#173)

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Closes: #156
Signed-off-by: Niels Thykier <niels@thykier.net>
This commit is contained in:
Niels Thykier 2018-03-10 16:06:50 +01:00 • committed by Eduard Braun
parent cae0faefa0
commit 6ea126d290
1 changed files with 20 additions and 16 deletions
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36
scour/scour.py
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@ -1421,22 +1421,26 @@ def removeDuplicateGradients(doc):
# for each element that referenced the gradient we are going to replace dup_id with master_id
dup_id = dupGrad.getAttribute('id')
funcIRI = re.compile('url\\([\'"]?#' + dup_id + '[\'"]?\\)') # matches url(#a), url('#a') and url("#a")
for elem in referencedIDs[dup_id]:
# find out which attribute referenced the duplicate gradient
for attr in ['fill', 'stroke']:
v = elem.getAttribute(attr)
(v_new, n) = funcIRI.subn('url(#' + master_id + ')', v)
if n > 0:
elem.setAttribute(attr, v_new)
if elem.getAttributeNS(NS['XLINK'], 'href') == '#' + dup_id:
elem.setAttributeNS(NS['XLINK'], 'href', '#' + master_id)
styles = _getStyle(elem)
for style in styles:
v = styles[style]
(v_new, n) = funcIRI.subn('url(#' + master_id + ')', v)
if n > 0:
styles[style] = v_new
_setStyle(elem, styles)
# With --keep-unreferenced-defs, we can end up with
# unreferenced gradients. See GH#156.
if dup_id in referencedIDs:
for elem in referencedIDs[dup_id]:
# find out which attribute referenced the duplicate gradient
for attr in ['fill', 'stroke']:
v = elem.getAttribute(attr)
(v_new, n) = funcIRI.subn('url(#' + master_id + ')', v)
if n > 0:
elem.setAttribute(attr, v_new)
if elem.getAttributeNS(NS['XLINK'], 'href') == '#' + dup_id:
elem.setAttributeNS(NS['XLINK'], 'href', '#' + master_id)
styles = _getStyle(elem)
for style in styles:
v = styles[style]
(v_new, n) = funcIRI.subn('url(#' + master_id + ')', v)
if n > 0:
styles[style] = v_new
_setStyle(elem, styles)
# now that all referencing elements have been re-mapped to the master
# it is safe to remove this gradient from the document