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#!/usr/bin/env python
# coding=utf-8
#
# Copyright (C) 2011 Felipe Correa da Silva Sanches
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
import inkex
from inkex import Guide
class SetupTypographyCanvas(inkex.EffectExtension):
def add_arguments(self, pars):
pars.add_argument("-e", "--emsize", type=int, default=1000)
pars.add_argument("-c", "--caps", type=int, default=700, help="Caps Height")
pars.add_argument("-x", "--xheight", type=int, default=500)
pars.add_argument("-a", "--ascender", type=int, default=750)
pars.add_argument("-d", "--descender", type=int, default=250)
def create_horizontal_guideline(self, name, position):
return self.svg.add(Guide().move_to(0, position, (0, 1)).update(inkscape__label=name))
def create_vertical_guideline(self, name, position):
return self.svg.add(Guide().move_to(position, 0, (1, 0)).update(inkscape__label=name))
def effect(self):
# Get all the options
emsize = self.options.emsize
ascender = self.options.ascender
caps = self.options.caps
xheight = self.options.xheight
descender = self.options.descender
# Get access to main SVG document element
self.svg.set("width", str(emsize))
self.svg.set("height", str(emsize))
self.svg.set("viewBox", "0 0 " + str(emsize) + " " + str(emsize))
baseline = descender
# Create guidelines
self.create_horizontal_guideline("baseline", baseline)
self.create_horizontal_guideline("ascender", baseline + ascender)
self.create_horizontal_guideline("caps", baseline + caps)
self.create_horizontal_guideline("xheight", baseline + xheight)
self.create_horizontal_guideline("descender", baseline - descender)
namedview = self.svg.namedview
namedview.set('inkscape:document-units', 'px')
namedview.set('inkscape:cx', str(emsize / 2.0))
namedview.set('inkscape:cy', str(emsize / 2.0))
if __name__ == '__main__':
SetupTypographyCanvas().run()
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