several fixes and more extensions from 1.1 back again
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extensions/fablabchemnitz/normalize_drawing_scale/meta.json
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20
extensions/fablabchemnitz/normalize_drawing_scale/meta.json
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[
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{
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"name": "Normalize Drawing Scale",
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"id": "fablabchemnitz.de.normalize_drawing_scale",
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"path": "laser_check",
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"dependent_extensions": null,
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"original_name": "Normalize Drawing Scale",
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"original_id": "fablabchemnitz.de.normalize_drawing_scale",
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"license": "GNU GPL v3",
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"license_url": "",
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"comment": "",
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"source_url": "https://gitea.fablabchemnitz.de/FabLab_Chemnitz/mightyscape-1.2/src/branch/master/extensions/fablabchemnitz/normalize_drawing_scale",
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"fork_url": null,
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"documentation_url": "https://stadtfabrikanten.org/display/IFM/Normale+Drawing+Scale",
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"inkscape_gallery_url": null,
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"main_authors": [
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"github.com/eridur-de"
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]
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}
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]
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<?xml version="1.0" encoding="UTF-8"?>
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<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
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<name>Normalize Drawing Scale</name>
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<id>fablabchemnitz.de.normalize_drawing_scale</id>
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<param name="remove_viewbox" type="bool" gui-text="Remove viewBox and set document units to px" gui-description="Removes viewBox attribute from svg:svg. Warning: this disabled the feature to change the document units to anything else than px unit.">false</param>
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<param name="target_scale" type="float" min="0.001" max="9999.000" precision="3" gui-text="Target scale (%)" gui-description="Default is 100%">100.0</param>
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<effect needs-live-preview="false">
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<object-type>all</object-type>
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<effects-menu>
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<submenu name="FabLab Chemnitz">
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<submenu name="Transformations"/>
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</submenu>
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</effects-menu>
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</effect>
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<script>
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<command location="inx" interpreter="python">normalize_drawing_scale.py</command>
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</script>
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</inkscape-extension>
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#!/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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format_units = inkex.units.parse_unit(self.svg.get('width'))[1] #get the "Format:" unit at "Display tab"
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namedView = self.document.getroot().find(inkex.addNS('namedview', 'sodipodi'))
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display_units = namedView.get(inkex.addNS('document-units', 'inkscape')) #means the "Display units:" at "Display tab"
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docScale = self.svg.scale
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inkscapeScale = self.svg.inkscape_scale #this is the "Scale:" value at "Display tab"
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docWidth = self.svg.get('width')
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docHeight = self.svg.get('height')
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docWidth_fin = inkex.units.parse_unit(docWidth)[0]
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docHeight_fin = inkex.units.parse_unit(docHeight)[0]
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vxMin, vyMin, vxMax, vyMax = self.svg.get_viewbox()
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vxTotal = vxMax - vxMin
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targetScale = self.options.target_scale / 100
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visualScaleX = self.svg.unittouu(str(vxTotal / self.svg.viewport_width) + display_units)
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formatScaleX = self.svg.unittouu(str(vxTotal / self.svg.viewport_width) + format_units)
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docWidth_new = docWidth_fin * visualScaleX * inkscapeScale
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docHeight_new = docHeight_fin * visualScaleX * inkscapeScale
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docWidth_new = docWidth_fin * targetScale / inkscapeScale
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docHeight_new = docHeight_fin * targetScale / inkscapeScale
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#inkex.errormsg("format_units: " + str(format_units))
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#inkex.errormsg("display_units: " + str(display_units))
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#inkex.errormsg("docScale: {:0.6f}".format(docScale))
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#inkex.errormsg("inkscapeScale: {:0.6f}".format(inkscapeScale))
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#inkex.errormsg("docWidth_fin: {:0.3f}{}".format(docWidth_fin, format_units))
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#inkex.errormsg("docHeight_fin: {:0.3f}{}".format(docHeight_fin, format_units))
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#inkex.errormsg("vxTotal: " + str(vxTotal))
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#inkex.errormsg("docWidth_new: {:0.3f}{} ({:0.3f}px)".format(docWidth_new, format_units, self.svg.unittouu(str(docWidth_new) + format_units)))
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#inkex.errormsg("docHeight_new: {:0.3f}{} ({:0.3f}px)".format(docHeight_new, format_units, self.svg.unittouu(str(docHeight_new) + format_units)))
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#inkex.errormsg("targetScale: {:0.6f}".format(targetScale))
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#inkex.errormsg("visualScaleX: {:0.6f}".format(visualScaleX))
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#inkex.errormsg("formatScaleX: {:0.6f}".format(formatScaleX))
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if inkscapeScale == targetScale: #strange rule. might break sth.
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inkex.utils.debug("Nothing to do. Scale is already 100%")
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return
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if visualScaleX == 0.0: #seems there is no viewBox attribute, then ...
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#inkex.errormsg("viewBox attribute is missing in svg:svg. Applying new one ...")
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visualScaleX = 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_fin, targetScale * docHeight_fin))
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if round(visualScaleX, 5) != targetScale or self.options.remove_viewbox is True:
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#set scale to 100% (we adjust viewBox)
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sc = (1 / (targetScale / inkscapeScale))
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if self.options.remove_viewbox is False:
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viewBoxNew = '0 0 {} {}'.format(docWidth_fin / targetScale, docHeight_fin / targetScale)
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#inkex.errormsg("viewBox modifying to: {}".format(viewBoxNew))
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#inkex.errormsg("width modifying to: {}{}".format(docWidth_fin, format_units))
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#inkex.errormsg("height modifying to: {}{}".format(docHeight_fin, format_units))
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self.svg.set('viewBox', viewBoxNew)
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self.svg.set('width', "{}{}".format(docWidth_fin, format_units))
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self.svg.set('height', "{}{}".format(docHeight_fin, format_units))
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else:
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#inkex.errormsg("viewBox popping; setting back to px ...")
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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_fin)
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self.svg.set('height', docHeight_fin)
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namedView.attrib[inkex.addNS('document-units', 'inkscape')] = 'px'
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translation_matrix = [[sc, 0.0, 0.0], [0.0, sc, 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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return
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if __name__ == '__main__':
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NormalizeDrawingScale().run()
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