ecbc38f9e9
This is an extension containing a few demo plug-ins. This is good to demonstrate the extension format. It will also allow to disable these plug-ins (if at some point, one doesn't want to show these demo plug-ins anymore). And finally it deals with the fact that our plug-in code is stupid, as it just tries to find the first executable with the same name (minus extension) as the plug-in folder. This doesn't go well on Windows, where the permission system is non-existent. So our code just ends up trying to run the first file with a similar name in a plug-in folder. As the C goat-exercise contains both an exe and the C source (and the system probably returns files in alphabetic order), GIMP under Windows tries to run the C source instead of the executable (this obviously doesn't go well). We could try to do more complex logics, like not aborting if the first file run fails and try the next one in the plug-in folder. Or maybe just rename the C file to another name. But any of these is just in the end the proof that our plug-in discovery right now is just bogus. The extension system is explicit, not based on randomly trying out files. Plug-ins entry points are explicitly listed in the metadata manifest.
163 lines
6.4 KiB
Python
Executable File
163 lines
6.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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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 3 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, see <https://www.gnu.org/licenses/>.
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import gi
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gi.require_version('Gimp', '3.0')
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from gi.repository import Gimp
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gi.require_version('GimpUi', '3.0')
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from gi.repository import GimpUi
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gi.require_version('Gegl', '0.4')
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from gi.repository import Gegl
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from gi.repository import GObject
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from gi.repository import GLib
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from gi.repository import Gio
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import sys, os
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import gettext
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_ = gettext.gettext
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def N_(message): return message
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class Goat (Gimp.PlugIn):
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## GimpPlugIn virtual methods ##
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def do_query_procedures(self):
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# Localization
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self.set_translation_domain("gimp30-python",
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Gio.file_new_for_path(Gimp.locale_directory()))
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return [ "goat-exercise-python" ]
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def do_create_procedure(self, name):
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procedure = Gimp.ImageProcedure.new(self, name,
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Gimp.PDBProcType.PLUGIN,
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self.run, None)
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procedure.set_image_types("*");
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procedure.set_menu_label("Exercise a goat and a python");
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procedure.set_icon_name(GimpUi.ICON_GEGL);
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procedure.add_menu_path('<Image>/Filters/Development/Goat exercises/');
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procedure.set_documentation("Exercise a goat in the Python 3 language",
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"Takes a goat for a walk in Python 3",
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name);
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procedure.set_attribution("Jehan", "Jehan", "2019");
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return procedure
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def run(self, procedure, run_mode, image, drawable, args, run_data):
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if run_mode == Gimp.RunMode.INTERACTIVE:
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk
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gi.require_version('Gdk', '3.0')
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from gi.repository import Gdk
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GimpUi.init("goat-exercise-py3.py")
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dialog = GimpUi.Dialog(use_header_bar=True,
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title=_("Exercise a goat (Python 3)"),
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role="goat-exercise-Python3")
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dialog.add_button("_Cancel", Gtk.ResponseType.CANCEL)
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dialog.add_button("_Source", Gtk.ResponseType.APPLY)
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dialog.add_button("_OK", Gtk.ResponseType.OK)
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geometry = Gdk.Geometry();
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geometry.min_aspect = 0.5;
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geometry.max_aspect = 1.0;
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dialog.set_geometry_hints(None, geometry, Gdk.WindowHints.ASPECT);
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box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=2)
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dialog.get_content_area().add(box)
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box.show()
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# XXX We use printf-style string for sharing the localized
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# string. You may just use recommended Python format() or
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# any style you like in your plug-ins.
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head_text=("This plug-in is an exercise in '%s' to "
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"demo plug-in creation.\nCheck out the last "
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"version of the source code online by clicking "
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"the \"Source\" button." % ("Python 3"))
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label = Gtk.Label(label=head_text)
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box.pack_start(label, False, False, 1)
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label.show()
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contents = None
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# Get the file contents Python-style instead of using
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# GLib.file_get_contents() which returns bytes result, and
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# when converting to string, get newlines as text contents.
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# Rather than wasting time to figure this out, use Python
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# core API!
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with open(os.path.realpath(__file__), 'r') as f:
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contents = f.read()
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if contents is not None:
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scrolled = Gtk.ScrolledWindow()
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scrolled.set_vexpand (True)
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box.pack_start(scrolled, True, True, 1)
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scrolled.show()
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view = Gtk.TextView()
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view.set_wrap_mode(Gtk.WrapMode.WORD)
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view.set_editable(False)
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buffer = view.get_buffer()
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buffer.set_text(contents, -1)
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scrolled.add(view)
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view.show()
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while (True):
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response = dialog.run()
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if response == Gtk.ResponseType.OK:
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dialog.destroy()
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break
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elif response == Gtk.ResponseType.APPLY:
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url = "https://gitlab.gnome.org/GNOME/gimp/-/blob/master/plug-ins/goat-exercises/goat-exercise-py3.py"
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Gio.app_info_launch_default_for_uri(url, None)
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continue
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else:
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dialog.destroy()
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return procedure.new_return_values(Gimp.PDBStatusType.CANCEL,
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GLib.Error())
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intersect, x, y, width, height = drawable.mask_intersect();
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if intersect:
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Gegl.init(None);
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buffer = drawable.get_buffer()
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shadow_buffer = drawable.get_shadow_buffer()
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graph = Gegl.Node()
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input = graph.create_child("gegl:buffer-source")
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input.set_property("buffer", buffer)
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invert = graph.create_child("gegl:invert")
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output = graph.create_child("gegl:write-buffer")
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output.set_property("buffer", shadow_buffer)
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input.link(invert)
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invert.link(output)
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output.process()
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# This is extremely important in bindings, since we don't
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# unref buffers. If we don't explicitly flush a buffer, we
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# may left hanging forever. This step is usually done
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# during an unref().
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shadow_buffer.flush()
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drawable.merge_shadow(True)
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drawable.update(x, y, width, height)
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Gimp.displays_flush()
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return procedure.new_return_values(Gimp.PDBStatusType.SUCCESS, GLib.Error())
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Gimp.main(Goat.__gtype__, sys.argv)
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