mutter/src/compositor/meta-plugin-manager.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (c) 2008 Intel Corp.
*
* Author: Tomas Frydrych <tf@linux.intel.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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "config.h"
#include "compositor-private.h"
#include "meta-plugin-manager.h"
#include <meta/prefs.h>
#include <meta/errors.h>
#include <meta/workspace.h>
#include "meta-module.h"
#include "window-private.h"
#include <string.h>
#include <stdlib.h>
#include <clutter/x11/clutter-x11.h>
static GType plugin_type = G_TYPE_NONE;
struct MetaPluginManager
{
MetaScreen *screen;
MetaPlugin *plugin;
};
void
meta_plugin_manager_set_plugin_type (GType gtype)
{
if (plugin_type != G_TYPE_NONE)
meta_fatal ("Mutter plugin already set: %s", g_type_name (plugin_type));
plugin_type = gtype;
}
/*
* Loads the given plugin.
*/
void
meta_plugin_manager_load (const gchar *plugin_name)
{
const gchar *dpath = MUTTER_PLUGIN_DIR "/";
gchar *path;
MetaModule *module;
if (g_path_is_absolute (plugin_name))
path = g_strdup (plugin_name);
else
path = g_strconcat (dpath, plugin_name, ".so", NULL);
module = g_object_new (META_TYPE_MODULE, "path", path, NULL);
if (!module || !g_type_module_use (G_TYPE_MODULE (module)))
{
/* This is fatal under the assumption that a monitoring
* process like gnome-session will take over and handle
* our untimely exit.
*/
g_printerr ("Unable to load plugin module [%s]: %s",
path, g_module_error());
exit (1);
}
meta_plugin_manager_set_plugin_type (meta_module_get_plugin_type (module));
g_type_module_unuse (G_TYPE_MODULE (module));
g_free (path);
}
static void
on_confirm_display_change (MetaMonitorManager *monitors,
MetaPluginManager *plugin_mgr)
{
meta_plugin_manager_confirm_display_change (plugin_mgr);
}
MetaPluginManager *
meta_plugin_manager_new (MetaScreen *screen)
{
MetaPluginManager *plugin_mgr;
MetaPluginClass *klass;
MetaPlugin *plugin;
MetaMonitorManager *monitors;
plugin_mgr = g_new0 (MetaPluginManager, 1);
plugin_mgr->screen = screen;
plugin_mgr->plugin = plugin = g_object_new (plugin_type, "screen", screen, NULL);
klass = META_PLUGIN_GET_CLASS (plugin);
if (klass->start)
klass->start (plugin);
monitors = meta_monitor_manager_get ();
g_signal_connect (monitors, "confirm-display-change",
G_CALLBACK (on_confirm_display_change), plugin_mgr);
return plugin_mgr;
}
static void
meta_plugin_manager_kill_window_effects (MetaPluginManager *plugin_mgr,
MetaWindowActor *actor)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
if (klass->kill_window_effects)
klass->kill_window_effects (plugin, actor);
}
static void
meta_plugin_manager_kill_switch_workspace (MetaPluginManager *plugin_mgr)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
if (klass->kill_switch_workspace)
klass->kill_switch_workspace (plugin);
}
/*
* Public method that the compositor hooks into for events that require
* no additional parameters.
*
* Returns TRUE if the plugin handled the event type (i.e.,
* if the return value is FALSE, there will be no subsequent call to the
* manager completed() callback, and the compositor must ensure that any
* appropriate post-effect cleanup is carried out.
*/
gboolean
meta_plugin_manager_event_simple (MetaPluginManager *plugin_mgr,
MetaWindowActor *actor,
unsigned long event)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
MetaDisplay *display = meta_screen_get_display (plugin_mgr->screen);
gboolean retval = FALSE;
if (display->display_opening)
return FALSE;
switch (event)
{
case META_PLUGIN_MINIMIZE:
if (klass->minimize)
{
retval = TRUE;
meta_plugin_manager_kill_window_effects (plugin_mgr,
actor);
_meta_plugin_effect_started (plugin);
klass->minimize (plugin, actor);
}
break;
case META_PLUGIN_MAP:
if (klass->map)
{
retval = TRUE;
meta_plugin_manager_kill_window_effects (plugin_mgr,
actor);
_meta_plugin_effect_started (plugin);
klass->map (plugin, actor);
}
break;
case META_PLUGIN_DESTROY:
if (klass->destroy)
{
retval = TRUE;
_meta_plugin_effect_started (plugin);
klass->destroy (plugin, actor);
}
break;
default:
g_warning ("Incorrect handler called for event %lu", event);
}
return retval;
}
/*
* The public method that the compositor hooks into for maximize and unmaximize
* events.
*
* Returns TRUE if the plugin handled the event type (i.e.,
* if the return value is FALSE, there will be no subsequent call to the
* manager completed() callback, and the compositor must ensure that any
* appropriate post-effect cleanup is carried out.
*/
gboolean
meta_plugin_manager_event_maximize (MetaPluginManager *plugin_mgr,
MetaWindowActor *actor,
unsigned long event,
gint target_x,
gint target_y,
gint target_width,
gint target_height)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
MetaDisplay *display = meta_screen_get_display (plugin_mgr->screen);
gboolean retval = FALSE;
if (display->display_opening)
return FALSE;
switch (event)
{
case META_PLUGIN_MAXIMIZE:
if (klass->maximize)
{
retval = TRUE;
meta_plugin_manager_kill_window_effects (plugin_mgr,
actor);
_meta_plugin_effect_started (plugin);
klass->maximize (plugin, actor,
target_x, target_y,
target_width, target_height);
}
break;
case META_PLUGIN_UNMAXIMIZE:
if (klass->unmaximize)
{
retval = TRUE;
meta_plugin_manager_kill_window_effects (plugin_mgr,
actor);
_meta_plugin_effect_started (plugin);
klass->unmaximize (plugin, actor,
target_x, target_y,
target_width, target_height);
}
break;
default:
g_warning ("Incorrect handler called for event %lu", event);
}
return retval;
}
/*
* The public method that the compositor hooks into for desktop switching.
*
* Returns TRUE if the plugin handled the event type (i.e.,
* if the return value is FALSE, there will be no subsequent call to the
* manager completed() callback, and the compositor must ensure that any
* appropriate post-effect cleanup is carried out.
*/
gboolean
meta_plugin_manager_switch_workspace (MetaPluginManager *plugin_mgr,
gint from,
gint to,
MetaMotionDirection direction)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
MetaDisplay *display = meta_screen_get_display (plugin_mgr->screen);
gboolean retval = FALSE;
if (display->display_opening)
return FALSE;
if (klass->switch_workspace)
{
retval = TRUE;
meta_plugin_manager_kill_switch_workspace (plugin_mgr);
_meta_plugin_effect_started (plugin);
klass->switch_workspace (plugin, from, to, direction);
}
return retval;
}
gboolean
meta_plugin_manager_filter_keybinding (MetaPluginManager *plugin_mgr,
MetaKeyBinding *binding)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
if (klass->keybinding_filter)
return klass->keybinding_filter (plugin, binding);
return FALSE;
}
gboolean
meta_plugin_manager_xevent_filter (MetaPluginManager *plugin_mgr,
XEvent *xev)
{
MetaPlugin *plugin = plugin_mgr->plugin;
return _meta_plugin_xevent_filter (plugin, xev);
}
void
meta_plugin_manager_confirm_display_change (MetaPluginManager *plugin_mgr)
{
MetaPlugin *plugin = plugin_mgr->plugin;
MetaPluginClass *klass = META_PLUGIN_GET_CLASS (plugin);
if (klass->confirm_display_change)
return klass->confirm_display_change (plugin);
else
return meta_plugin_complete_display_change (plugin, TRUE);
}