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mightyscape-1.1-deprecated/extensions/fablabchemnitz/funshapes/funshapes.py

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2021-07-23 02:36:56 +02:00
#!/usr/bin/env python3
# coding=utf-8
#
# Copyright (C) [2021] [Matt Cottam], [mpcottam@raincloud.co.uk]
#
# 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.
#
"""
A simple Extension to test if a Gtk3 Gui will work on most Inkscape 1.1+ Systems.
Inkscape 1.1 is the minimum verion.
Draws a simple set of randomly coloured circles and outputs them to the canvas.
"""
import inkex
from inkex.elements import Group, PathElement
from inkex import transforms, styles
import random
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk, GdkPixbuf, Gdk
from lxml import etree
# Could not find simplestyle, found this instead in extensions repo
def formatStyle(a):
"""Format an inline style attribute from a dictionary"""
return ";".join([att + ":" + str(val) for att, val in a.items()])
def random_rgb(self):
random_red = random.randrange(0, 255)
random_green = random.randrange(0, 255)
random_blue = random.randrange(0, 255)
return f'rgb({random_red}, {random_green}, {random_blue})'
# Generate a circle or circle path
def draw_svg_circle(self, r, cx, cy, parent, is_path):
style = {'stroke': 'black',
# 'stroke-opacity': (r/200),
'stroke-width': '0.1',
# 'fill': 'none'
'fill': random_rgb(self)
}
attribs = {
'style': formatStyle(style),
'r': str(r),
'cx': str(cx),
'cy': str(cy)
}
my_circle = etree.SubElement(Funshapes.output_group, inkex.addNS('circle', 'svg'), attribs)
def draw_svg_circle_series(self, r, cx, cy, parent, is_path):
my_list = range(1, 100)
for item in reversed(my_list):
draw_svg_circle(self, item, cx, cy, parent, is_path)
gtk3_add_svg_image(self, Funshapes.output_group)
def draw_svg_circle_series_scale(self, r, cx, cy, parent, is_path):
Funshapes.output_group.clear()
upper_range = int(Funshapes.main_window.h_scale.get_value())
my_list = range(1, upper_range)
for item in reversed(my_list):
draw_svg_circle(self, item, cx, cy, parent, is_path)
gtk3_add_svg_image(self, Funshapes.output_group)
def group_wrapper(self, my_objects, to_layer):
group_id = 'g' + str(random.randrange(100000, 1000000))
new_group = self.svg.add(Group.new('#' + group_id))
# inkex set, takes account of NS attribs etc
new_group.set('inkscape:groupmode', 'layer')
new_group.set('inkscape:label', 'My_Layer_' + group_id)
# When plucking an object from an svg, will only have its own transforms
# Composed transforms must be applied instead.
for my_object in my_objects:
my_object_transforms = my_object.composed_transform()
my_object.attrib['transform'] = ''
my_object.transform.add_matrix(my_object_transforms)
new_group.append(my_object)
new_group.attrib['id'] = group_id
return new_group
def object_to_xml_tag(self):
my_tag = str(self.tostring().decode("utf-8"))
return my_tag
##########################
# GTK3 GUI SECTION BELOW
##########################
def gtk3_gui(self):
Funshapes.main_window = Gtk.Window()
Funshapes.main_window.root_grid = Gtk.Grid()
Funshapes.main_window.add(Funshapes.main_window.root_grid)
root_grid = Funshapes.main_window.root_grid
main_window = Funshapes.main_window
gtk3_scales(root_grid, Funshapes.main_window)
main_window.connect("destroy", Gtk.main_quit)
main_window.show_all()
draw_svg_circle_series(self, 200, 100, 100, Funshapes.self.svg, 'yes')
Gtk.main()
return main_window
def gtk3_scales(grid, inkex_self):
ad1 = Gtk.Adjustment(value=20, lower=0, upper=100, step_increment=5, page_increment=10, page_size=0)
inkex_self.h_scale = Gtk.Scale(
orientation=Gtk.Orientation.HORIZONTAL, adjustment=ad1)
inkex_self.h_scale.set_digits(0)
inkex_self.h_scale.set_valign(Gtk.Align.START)
inkex_self.h_scale.connect("value-changed", draw_svg_circle_series_scale, 50, 100, 100, None, None)
grid.attach(inkex_self.h_scale, 1, 0, 1, 1)
def gtk3_add_svg_image(self, svg_object):
Funshapes.base_image = Gtk.Image()
Funshapes.base_image.set_from_file('white.png')
random_number = random.randrange(10000, 1000000, 1)
# convert svg object to svg xml
svg = object_to_xml_tag(svg_object)
svg = f'<svg width="200" viewBox="0 0 200 ' \
f'200" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape">{svg}</svg> '
loader = GdkPixbuf.PixbufLoader()
loader.write(svg.encode())
loader.close()
pixbuf = loader.get_pixbuf()
Funshapes.preview_image = Gtk.Image.new_from_pixbuf(pixbuf)
Funshapes.preview_image.show_all()
if Funshapes.main_window.root_grid.get_child_at(1, 1) is None:
Funshapes.main_window.root_grid.attach(Funshapes.preview_image, 1, 1, 1, 1)
else:
Funshapes.main_window.root_grid.get_child_at(1, 1).destroy()
Funshapes.main_window.root_grid.attach(Funshapes.preview_image, 1, 1, 1, 1)
class Funshapes(inkex.EffectExtension):
def effect(self):
Funshapes.self = self
output_group_id = f'Funshapes_{random.randrange(10000, 1000000, 1)}'
Funshapes.output_group = Group.new('#' + output_group_id)
# create new gtk3 window and attach to effect self
self.win = gtk3_gui(self)
# When GTK is exited
Funshapes.self.svg.append(Funshapes.output_group)
if __name__ == '__main__':
Funshapes().run()