added funshapes extension, fixed some bug in incadiff inx

extensions/fablabchemnitz/funshapes/funshapes.inx

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+    <name>Fun Shapes</name>
+    <id>fablabchemnitz.de.funshapes</id>
+    <effect implements-custom-gui="true">
+        <object-type>path</object-type>
+        <effects-menu>
+         <submenu name="FabLab Chemnitz">
+            <submenu name="Shape/Pattern from Generator"/>
+         </submenu>        
+         </effects-menu>
+    </effect>
+    <script>
+        <command location="inx" interpreter="python">funshapes.py</command>
+    </script>
+</inkscape-extension>

extensions/fablabchemnitz/funshapes/funshapes.py

@@ -0,0 +1,199 @@
+#!/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()

extensions/fablabchemnitz/incadiff/incadiff.inx

@@ -3,13 +3,13 @@
     <name>Incadiff</name>
     <id>fablabchemnitz.de.incadiff</id>
     <effect needs-document="true" needs-live-preview="false">
-        <effects-menu hidden="false">
+        <object-type>all</object-type>
+        <effects-menu>
             <submenu name="FabLab Chemnitz">
                 <submenu name="Modify existing Path(s)"/>
             </submenu>
         </effects-menu>
         <menu-tip>Apply successive difference operations on superimposed paths. Useful for plotter addicts.</menu-tip>
-        <object-type>all</object-type>
     </effect>
     <script>
         <command location="inx" interpreter="python">incadiff.py</command>

extensions/fablabchemnitz/validate.sh

@@ -14,13 +14,15 @@ ls -d */ | wc -l
 echo "Removing unrequired pyc cache files"
 find . -type d -name "__pycache__" -exec rm -rf {} \;
 
+read -p "Build local gallery extension zip files?" -n 1 -r
+echo
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    echo "Building Inkscape gallery extension zip files"
+    TARGETDIR="../000_Inkscape_Gallery"
+    mkdir -p $TARGETDIR > /dev/null
     
-echo "Building Inkscape gallery extension zip files"
-TARGETDIR="../000_Inkscape_Gallery"
-mkdir -p $TARGETDIR > /dev/null
-
-#list of extensions which are uploaded at Inkscape gallery by us at the moment
-for EXTENSION in                            \
+    #list of extensions which are uploaded at Inkscape gallery by us at the moment
+    for EXTENSION in                            \
     	"animate_order"                         \
     	"cleanup_styles"                        \
     	"contour_scanner_and_trimmer"           \
@@ -42,7 +44,7 @@ for EXTENSION in                            \
     	"ungrouper_and_element_migrator_filter" \
     	"unwind_paths"                          \
     	"vpypetools"
-do
+    do
     	EXTRA=""
     	if [[ $EXTENSION == "styles_to_layers" ]] || [[  $EXTENSION == "ungrouper_and_element_migrator_filter" ]]; then
     		EXTRA="${EXTRA} apply_transformations/"
@@ -52,4 +54,5 @@ do
         ZIPFILE=$TARGETDIR/$EXTENSION.zip
     	rm $ZIPFILE > /dev/null
     	zip -r  $ZIPFILE $EXTENSION/ 000_about_fablabchemnitz.svg $EXTRA
-done
+    done
+fi