/* $Id: engines.c 2114 2006-10-22 14:44:42Z nick $ * * Copyright (C) 2006 Christian Hammond * Copyright (C) 2005 John (J5) Palmieri * Copyright (C) 2006 Nick Schermer * * 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, 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 #include "daemon.h" #include "engines.h" typedef struct { GModule *module; guint ref_count; gboolean (*theme_check_init)(unsigned int major_ver, unsigned int minor_ver, unsigned int micro_ver); void (*get_theme_info)(char **theme_name, char **theme_ver, char **author, char **homepage); GtkWindow *(*create_notification)(UrlClickedCb url_clicked_cb); void (*destroy_notification)(GtkWindow *nw); void (*show_notification)(GtkWindow *nw); void (*hide_notification)(GtkWindow *nw); void (*set_notification_hints)(GtkWindow *nw, GHashTable *hints); void (*set_notification_text)(GtkWindow *nw, const char *summary, const char *body); void (*set_notification_icon)(GtkWindow *nw, GdkPixbuf *pixbuf); void (*set_notification_arrow)(GtkWindow *nw, gboolean visible, int x, int y); void (*add_notification_action)(GtkWindow *nw, const char *label, const char *key, GCallback cb); void (*clear_notification_actions)(GtkWindow *nw); void (*move_notification)(GtkWindow *nw, int x, int y); void (*set_notification_timeout)(GtkWindow *nw, glong timeout); void (*notification_tick)(GtkWindow *nw, glong timeout); } ThemeEngine; static ThemeEngine *active_engine = NULL; static ThemeEngine * load_theme_engine(const char *name) { ThemeEngine *engine; char *filename; char *path; filename = g_strdup_printf("lib%s.so", name); path = g_build_filename(ENGINES_DIR, filename, NULL); g_free(filename); engine = g_new0(ThemeEngine, 1); engine->ref_count = 1; engine->module = g_module_open(path, G_MODULE_BIND_LAZY); g_free(path); if (engine->module == NULL) goto error; #define BIND_REQUIRED_FUNC(name) \ if (!g_module_symbol(engine->module, #name, (gpointer *)&engine->name)) \ { \ /* Too harsh! Fall back to default. */ \ g_warning("Theme doesn't provide the required function '%s'", #name); \ goto error; \ } #define BIND_OPTIONAL_FUNC(name) \ g_module_symbol(engine->module, #name, (gpointer *)&engine->name); BIND_REQUIRED_FUNC(theme_check_init); BIND_REQUIRED_FUNC(get_theme_info); BIND_REQUIRED_FUNC(create_notification); BIND_REQUIRED_FUNC(set_notification_text); BIND_REQUIRED_FUNC(set_notification_icon); BIND_REQUIRED_FUNC(set_notification_arrow); BIND_REQUIRED_FUNC(add_notification_action); BIND_REQUIRED_FUNC(clear_notification_actions); BIND_REQUIRED_FUNC(move_notification); BIND_OPTIONAL_FUNC(destroy_notification); BIND_OPTIONAL_FUNC(show_notification); BIND_OPTIONAL_FUNC(hide_notification); BIND_OPTIONAL_FUNC(set_notification_timeout); BIND_OPTIONAL_FUNC(set_notification_hints); BIND_OPTIONAL_FUNC(notification_tick); if (!engine->theme_check_init(NOTIFICATION_DAEMON_MAJOR_VERSION, NOTIFICATION_DAEMON_MINOR_VERSION, NOTIFICATION_DAEMON_MICRO_VERSION)) { g_error("Theme doesn't work with this version of notification-daemon"); goto error; } return engine; error: if (engine->module != NULL && !g_module_close(engine->module)) g_warning("%s: %s", filename, g_module_error()); g_free(engine); return NULL; } static void destroy_engine(ThemeEngine *engine) { g_assert(engine->ref_count == 0); if (active_engine == engine) active_engine = NULL; g_module_close(engine->module); g_free(engine); } void theme_changed_cb(void) { if (active_engine == NULL) return; active_engine->ref_count--; if (active_engine->ref_count == 0) destroy_engine(active_engine); /* This is no longer the true active engine, so reset this. */ active_engine = NULL; } static ThemeEngine * get_theme_engine(void) { if (active_engine == NULL) { gchar *enginename; enginename = xfce_load_setting ("engine_name", "standard"); if (enginename == NULL) { active_engine = load_theme_engine("standard"); g_assert(active_engine != NULL); } else { active_engine = load_theme_engine(enginename); if (active_engine == NULL) { g_warning("Unable to load theme engine '%s'", enginename); active_engine = load_theme_engine("standard"); } g_free(enginename); g_assert(active_engine != NULL); } } return active_engine; } static void theme_engine_unref(ThemeEngine *engine) { engine->ref_count--; if (engine->ref_count == 0) destroy_engine(engine); } GtkWindow * theme_create_notification(UrlClickedCb url_clicked_cb) { ThemeEngine *engine = get_theme_engine(); GtkWindow *nw = engine->create_notification(url_clicked_cb); g_object_set_data_full(G_OBJECT(nw), "_theme_engine", engine, (GDestroyNotify)theme_engine_unref); engine->ref_count++; return nw; } void theme_destroy_notification(GtkWindow *nw) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->destroy_notification != NULL) engine->destroy_notification(nw); else gtk_widget_destroy(GTK_WIDGET(nw)); } void theme_show_notification(GtkWindow *nw) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->show_notification != NULL) engine->show_notification(nw); else gtk_widget_show(GTK_WIDGET(nw)); } void theme_hide_notification(GtkWindow *nw) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->hide_notification != NULL) engine->hide_notification(nw); else gtk_widget_hide(GTK_WIDGET(nw)); } void theme_set_notification_hints(GtkWindow *nw, GHashTable *hints) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->set_notification_hints != NULL) engine->set_notification_hints(nw, hints); } void theme_set_notification_timeout(GtkWindow *nw, glong timeout) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->set_notification_timeout != NULL) engine->set_notification_timeout(nw, timeout); } void theme_notification_tick(GtkWindow *nw, glong remaining) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); if (engine->notification_tick != NULL) engine->notification_tick(nw, remaining); } void theme_set_notification_text(GtkWindow *nw, const char *summary, const char *body) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->set_notification_text(nw, summary, body); } void theme_set_notification_icon(GtkWindow *nw, GdkPixbuf *pixbuf) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->set_notification_icon(nw, pixbuf); } void theme_set_notification_arrow(GtkWindow *nw, gboolean visible, int x, int y) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->set_notification_arrow(nw, visible, x, y); } void theme_add_notification_action(GtkWindow *nw, const char *label, const char *key, GCallback cb) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->add_notification_action(nw, label, key, cb); } void theme_clear_notification_actions(GtkWindow *nw) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->clear_notification_actions(nw); } void theme_move_notification(GtkWindow *nw, int x, int y) { ThemeEngine *engine = g_object_get_data(G_OBJECT(nw), "_theme_engine"); engine->move_notification(nw, x, y); }