62 lines
3.1 KiB
Python
62 lines
3.1 KiB
Python
#!/usr/bin/env python3
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import inkex
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from inkex import Transform
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from lxml import etree
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class NormalizeDrawingScale(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument('--remove_viewbox', type=inkex.Boolean, default=True)
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pars.add_argument('--target_scale', type=float, default=100.0)
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def effect(self):
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namedView = self.document.getroot().find(inkex.addNS('namedview', 'sodipodi'))
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doc_units = namedView.get(inkex.addNS('document-units', 'inkscape'))
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docScale = self.svg.scale
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docWidth = self.svg.uutounit(self.svg.width, doc_units)
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docHeight = self.svg.uutounit(self.svg.height, doc_units)
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vxMin, vyMin, vxMax, vyMax = self.svg.get_viewbox()
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vxTotal = vxMax - vxMin
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vScaleX = self.svg.unittouu(str(vxTotal / self.svg.width) + doc_units)
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if vScaleX == 0.0: #seems there is no viewBox attribute, then ...
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#self.msg("viewBox attribute is missing in svg:svg. Applying new one ...")
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vScaleX = 1.0 #this is the case we deal with px as display unit and we removed the viewBox
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self.svg.set('viewBox', '0 0 {} {}'.format(targetScale * docWidth, targetScale * docHeight))
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targetScale = self.options.target_scale / 100
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if round(vScaleX, 5) != targetScale or self.options.remove_viewbox is True:
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#set scale to 100% (we adjust viewBox)
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if self.options.remove_viewbox is False:
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self.svg.set('viewBox', '0 0 {} {}'.format(targetScale * docWidth, targetScale * docHeight))
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else:
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self.svg.pop('viewBox')
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self.document.getroot().set('inkscape:document-units', 'px')
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self.svg.set('width', docWidth)
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self.svg.set('height', docHeight)
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namedView.attrib[inkex.addNS('document-units', 'inkscape')] = 'px'
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translation_matrix = [[targetScale / vScaleX, 0.0, 0.0], [0.0, targetScale / vScaleX, 0.0]]
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#select each top layer and apply the transformation to scale
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processed = []
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for element in self.document.getroot().iter(tag=etree.Element):
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if element != self.document.getroot():
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if element.tag == inkex.addNS('g','svg'):
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parent = element.getparent()
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if parent.get('inkscape:groupmode') != 'layer' and element.get('inkscape:groupmode') == 'layer':
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element.transform = Transform(translation_matrix) * element.composed_transform()
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processed.append(element)
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#do the same for all elements which lay on first level and which are not a layer
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for element in self.document.getroot().getchildren():
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if isinstance(element, inkex.ShapeElement) and element not in processed:
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element.transform = Transform(translation_matrix) * element.composed_transform()
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else:
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inkex.utils.debug("Nothing to do. Scale is already 100%")
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if __name__ == '__main__':
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NormalizeDrawingScale().run() |