Qball's Weblog
GObject based plugins and vala in GMPC
It is something I have been preparing for a while now and today I took the first step that makes things work.
GMPC now supports GObject based plugins ( a base abstract class with interfaces).
This part of the code is written in vala, so I hope to offer the possibility of vala-written plugin soon.
Adding support for the GObject based plugins in the existing code was luckily very easy. I started wrapping the access to the plugins in the previous 2 releases, so I had not modify one file only, to get it working (and some pointers types).
The example plugin:
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/* Gnome Music Player Client (GMPC) * Copyright (C) 2004-2009 Qball Cow <qball @sarine.nl> * Project homepage: http://gmpc.wikia.com/ * 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. */ using GLib; using Gtk; using Gmpc; public class Gmpc.TestPlugin : Gmpc.PluginBase, Gmpc.Plugin2.Preferences { public const int[3] version = {,,2}; /********************************************************************************* * Plugin base functions * These functions are required. ********************************************************************************/ public override weak int[3] get_version() { return this.version; } /** * The name of the plugin */ public override weak string get_name() { return "Vala test plugin"; } /** * Tells the plugin to save itself */ public override void save_yourself() { stdout.printf("Vala plugin save myself\n"); /* nothing to save */ } /** * Get set enabled */ public override bool get_enabled() { return (bool)config.get_int_with_default(this.get_name(), "enabled", 1); } public override void set_enabled(bool state) { config.set_int(this.get_name(), "enabled", (int)state); } /********************************************************************************* * Plugin preferences functions ********************************************************************************/ public void pane_construct(Gtk.Container container) { var box = new Gtk.HBox(false,6); var label = new Gtk.Label ("This is a test preferences pane"); box.pack_start(label, false, false,); container.add(box); container.show_all(); stdout.printf("%s: Create preferences panel\n",this.get_name()); } public void pane_destroy(Gtk.Container container) { Gtk.Bin bin = (Gtk.Bin) container; bin.child.destroy(); stdout.printf("%s: Destroy preferences panel\n",this.get_name()); } /********************************************************************************* * Private ********************************************************************************/ /* Plugin functions */ private void connection_changed(Gmpc.Connection conn,MPD.Server server, int connect){ stdout.printf("%s: Connection changed: %i\n",this.get_name(), connect); } construct { stdout.printf("create %s\n", this.get_name()); gmpcconn.connection_changed += connection_changed; } ~TestPlugin() { stdout.printf("Destroying %s\n", this.get_name()); } } </qball> |