199 lines
6.0 KiB
Python
199 lines
6.0 KiB
Python
#!/usr/bin/env python3
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# coding=utf-8
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#
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# Copyright (C) [2021] [Matt Cottam], [mpcottam@raincloud.co.uk]
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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"""
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A simple Extension to test if a Gtk3 Gui will work on most Inkscape 1.1+ Systems.
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Inkscape 1.1 is the minimum verion.
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Draws a simple set of randomly coloured circles and outputs them to the canvas.
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"""
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import inkex
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from inkex.elements import Group, PathElement
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from inkex import transforms, styles
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import random
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import gi
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gi.require_version("Gtk", "3.0")
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from gi.repository import Gtk, GdkPixbuf, Gdk
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from lxml import etree
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# Could not find simplestyle, found this instead in extensions repo
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def formatStyle(a):
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"""Format an inline style attribute from a dictionary"""
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return ";".join([att + ":" + str(val) for att, val in a.items()])
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def random_rgb(self):
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random_red = random.randrange(0, 255)
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random_green = random.randrange(0, 255)
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random_blue = random.randrange(0, 255)
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return f'rgb({random_red}, {random_green}, {random_blue})'
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# Generate a circle or circle path
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def draw_svg_circle(self, r, cx, cy, parent, is_path):
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style = {'stroke': 'black',
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# 'stroke-opacity': (r/200),
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'stroke-width': '0.1',
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# 'fill': 'none'
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'fill': random_rgb(self)
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}
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attribs = {
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'style': formatStyle(style),
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'r': str(r),
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'cx': str(cx),
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'cy': str(cy)
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}
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my_circle = etree.SubElement(Funshapes.output_group, inkex.addNS('circle', 'svg'), attribs)
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def draw_svg_circle_series(self, r, cx, cy, parent, is_path):
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my_list = range(1, 100)
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for item in reversed(my_list):
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draw_svg_circle(self, item, cx, cy, parent, is_path)
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gtk3_add_svg_image(self, Funshapes.output_group)
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def draw_svg_circle_series_scale(self, r, cx, cy, parent, is_path):
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Funshapes.output_group.clear()
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upper_range = int(Funshapes.main_window.h_scale.get_value())
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my_list = range(1, upper_range)
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for item in reversed(my_list):
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draw_svg_circle(self, item, cx, cy, parent, is_path)
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gtk3_add_svg_image(self, Funshapes.output_group)
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def group_wrapper(self, my_objects, to_layer):
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group_id = 'g' + str(random.randrange(100000, 1000000))
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new_group = self.svg.add(Group.new('#' + group_id))
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# inkex set, takes account of NS attribs etc
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new_group.set('inkscape:groupmode', 'layer')
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new_group.set('inkscape:label', 'My_Layer_' + group_id)
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# When plucking an object from an svg, will only have its own transforms
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# Composed transforms must be applied instead.
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for my_object in my_objects:
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my_object_transforms = my_object.composed_transform()
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my_object.attrib['transform'] = ''
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my_object.transform.add_matrix(my_object_transforms)
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new_group.append(my_object)
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new_group.attrib['id'] = group_id
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return new_group
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def object_to_xml_tag(self):
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my_tag = str(self.tostring().decode("utf-8"))
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return my_tag
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##########################
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# GTK3 GUI SECTION BELOW
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##########################
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def gtk3_gui(self):
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Funshapes.main_window = Gtk.Window()
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Funshapes.main_window.root_grid = Gtk.Grid()
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Funshapes.main_window.add(Funshapes.main_window.root_grid)
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root_grid = Funshapes.main_window.root_grid
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main_window = Funshapes.main_window
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gtk3_scales(root_grid, Funshapes.main_window)
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main_window.connect("destroy", Gtk.main_quit)
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main_window.show_all()
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draw_svg_circle_series(self, 200, 100, 100, Funshapes.self.svg, 'yes')
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Gtk.main()
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return main_window
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def gtk3_scales(grid, inkex_self):
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ad1 = Gtk.Adjustment(value=20, lower=0, upper=100, step_increment=5, page_increment=10, page_size=0)
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inkex_self.h_scale = Gtk.Scale(
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orientation=Gtk.Orientation.HORIZONTAL, adjustment=ad1)
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inkex_self.h_scale.set_digits(0)
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inkex_self.h_scale.set_valign(Gtk.Align.START)
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inkex_self.h_scale.connect("value-changed", draw_svg_circle_series_scale, 50, 100, 100, None, None)
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grid.attach(inkex_self.h_scale, 1, 0, 1, 1)
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def gtk3_add_svg_image(self, svg_object):
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Funshapes.base_image = Gtk.Image()
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Funshapes.base_image.set_from_file('white.png')
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random_number = random.randrange(10000, 1000000, 1)
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# convert svg object to svg xml
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svg = object_to_xml_tag(svg_object)
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svg = f'<svg width="200" viewBox="0 0 200 ' \
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f'200" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape">{svg}</svg> '
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loader = GdkPixbuf.PixbufLoader()
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loader.write(svg.encode())
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loader.close()
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pixbuf = loader.get_pixbuf()
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Funshapes.preview_image = Gtk.Image.new_from_pixbuf(pixbuf)
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Funshapes.preview_image.show_all()
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if Funshapes.main_window.root_grid.get_child_at(1, 1) is None:
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Funshapes.main_window.root_grid.attach(Funshapes.preview_image, 1, 1, 1, 1)
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else:
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Funshapes.main_window.root_grid.get_child_at(1, 1).destroy()
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Funshapes.main_window.root_grid.attach(Funshapes.preview_image, 1, 1, 1, 1)
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class Funshapes(inkex.EffectExtension):
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def effect(self):
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Funshapes.self = self
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output_group_id = f'Funshapes_{random.randrange(10000, 1000000, 1)}'
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Funshapes.output_group = Group.new('#' + output_group_id)
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# create new gtk3 window and attach to effect self
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self.win = gtk3_gui(self)
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# When GTK is exited
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Funshapes.self.svg.append(Funshapes.output_group)
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if __name__ == '__main__':
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Funshapes().run() |