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#!/usr/bin/env gjs
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* hello-world.js
* Copyright (C) Jehan
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
const System = imports.system
imports.gi.versions.Gimp = '3.0';
const Gimp = imports.gi.Gimp;
imports.gi.versions.GimpUi = '3.0';
const GimpUi = imports.gi.GimpUi;
imports.gi.versions.Gegl = '0.4';
const Gegl = imports.gi.Gegl;
imports.gi.versions.Gtk = '3.0';
const Gtk = imports.gi.Gtk;
imports.gi.versions.Gdk = '3.0';
const Gdk = imports.gi.Gdk;
const GLib = imports.gi.GLib;
const GObject = imports.gi.GObject;
const Gio = imports.gi.Gio;
/* gjs's ARGV is not C-style. We must add the program name as first
* value.
*/
ARGV.unshift(System.programInvocationName);
let url = "https://gitlab.gnome.org/GNOME/gimp/blob/master/extensions/goat-exercises/goat-exercise-gjs.js";
function _(message) { return GLib.dgettext(null, message); }
var Goat = GObject.registerClass({
GTypeName: 'Goat',
}, class Goat extends Gimp.PlugIn {
vfunc_query_procedures() {
return ["plug-in-goat-exercise-gjs"];
}
vfunc_create_procedure(name) {
let procedure = Gimp.ImageProcedure.new(this, name, Gimp.PDBProcType.PLUGIN, this.run);
procedure.set_image_types("*");
procedure.set_sensitivity_mask(Gimp.ProcedureSensitivityMask.DRAWABLE);
procedure.set_menu_label(_("Plug-In Example in _JavaScript"));
procedure.set_icon_name(GimpUi.ICON_GEGL);
procedure.add_menu_path ('<Image>/Filters/Development/Plug-In Examples/');
procedure.set_documentation(_("Plug-in example in JavaScript (GJS)"),
_("Plug-in example in JavaScript (GJS)"),
name);
procedure.set_attribution("Jehan", "Jehan", "2019");
return procedure;
}
run(procedure, run_mode, image, drawables, config, run_data) {
/* TODO: localization. */
if (drawables.length != 1) {
let msg = `Procedure '${procedure.get_name()}' only works with one drawable.`;
let error = GLib.Error.new_literal(Gimp.PlugIn.error_quark(), 0, msg);
return procedure.new_return_values(Gimp.PDBStatusType.CALLING_ERROR, error)
}
let drawable = drawables[0];
if (run_mode == Gimp.RunMode.INTERACTIVE) {
GimpUi.init("goat-exercise-gjs");
/* TODO: help function and ID. */
let dialog = new GimpUi.Dialog({
title: _("Plug-In Example in JavaScript (GJS)"),
role: "goat-exercise-JavaScript",
use_header_bar: true,
});
dialog.add_button(_("_Cancel"), Gtk.ResponseType.CANCEL);
dialog.add_button(_("_Source"), Gtk.ResponseType.APPLY);
dialog.add_button(_("_OK"), Gtk.ResponseType.OK);
let geometry = new Gdk.Geometry();
geometry.min_aspect = 0.5;
geometry.max_aspect = 1.0;
dialog.set_geometry_hints (null, geometry, Gdk.WindowHints.ASPECT);
let box = new Gtk.Box({
orientation: Gtk.Orientation.VERTICAL,
spacing: 2
});
dialog.get_content_area().add(box);
box.show();
let lang = "JavaScript (GJS)";
/* XXX Can't we have nicer-looking multiline strings and
* also in printf format like in C for sharing the same
* string in localization?
*/
let head_text = `This plug-in is an exercise in '${lang}' to demo plug-in creation.\n` +
`Check out the last version of the source code online by clicking the \"Source\" button.`;
let label = new Gtk.Label({label:head_text});
box.pack_start(label, false, false, 1);
label.show();
let contents = imports.byteArray.toString(GLib.file_get_contents(System.programInvocationName)[1]);
if (contents) {
let scrolled = new Gtk.ScrolledWindow();
scrolled.set_vexpand (true);
box.pack_start(scrolled, true, true, 1);
scrolled.show();
let view = new Gtk.TextView();
view.set_wrap_mode(Gtk.WrapMode.WORD);
view.set_editable(false);
let buffer = view.get_buffer();
buffer.set_text(contents, -1);
scrolled.add(view);
view.show();
}
while (true) {
let response = dialog.run();
if (response == Gtk.ResponseType.OK) {
dialog.destroy();
break;
}
else if (response == Gtk.ResponseType.APPLY) {
Gio.app_info_launch_default_for_uri(url, null);
continue;
}
else { /* CANCEL, CLOSE, DELETE_EVENT */
dialog.destroy();
return procedure.new_return_values(Gimp.PDBStatusType.CANCEL, null)
}
}
}
let [ intersect, x, y, width, height ] = drawable.mask_intersect();
if (intersect) {
Gegl.init(null);
let buffer = drawable.get_buffer();
let shadow_buffer = drawable.get_shadow_buffer();
let graph = new Gegl.Node();
let input = graph.create_child("gegl:buffer-source");
input.set_property("buffer", buffer);
let invert = graph.create_child("gegl:invert");
let output = graph.create_child("gegl:write-buffer");
output.set_property("buffer", shadow_buffer);
input.link(invert);
invert.link(output);
output.process();
/* This is extremely important in bindings, since we don't
* unref buffers. If we don't explicitly flush a buffer, we
* may left hanging forever. This step is usually done
* during an unref().
*/
shadow_buffer.flush();
drawable.merge_shadow(true);
drawable.update(x, y, width, height);
Gimp.displays_flush();
}
return procedure.new_return_values(Gimp.PDBStatusType.SUCCESS, null);
}
});
Gimp.main(Goat.$gtype, ARGV);
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