diff options
Diffstat (limited to 'src/daemon/engines.c')
| -rw-r--r-- | src/daemon/engines.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/src/daemon/engines.c b/src/daemon/engines.c new file mode 100644 index 0000000..69efc39 --- /dev/null +++ b/src/daemon/engines.c @@ -0,0 +1,308 @@ +/* $Id: engines.c 2114 2006-10-22 14:44:42Z nick $ + * + * Copyright (C) 2006 Christian Hammond <[email protected]> + * Copyright (C) 2005 John (J5) Palmieri <[email protected]> + * Copyright (C) 2006 Nick Schermer <[email protected]> + * + * 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 <libxfce4util/libxfce4util.h> +#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); +} |