/* demo-gui.c * Copyright (C) 2008 Rov Juvano * * 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 . */ #ifdef HAVE_CONFIG_H #include "config.h" #endif /* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex * with newer GLib versions (>= 2.31.0) */ #define GLIB_DISABLE_DEPRECATION_WARNINGS #include #include #include #include #include "demo-gui.h" #undef G_LOG_DOMAIN #define G_LOG_DOMAIN "demo-gui" enum { SIGNAL_ERROR, SIGNAL_QUITING, LAST_SIGNAL }; static guint demo_gui_signals[LAST_SIGNAL] = { 0 }; enum { PROP_0, }; typedef struct _DemoGuiPrivate { DemoPlayer *player; GList *uris; GList *now_playing; gboolean is_playing; GtkWidget *window; GtkEntry *rate_entry; GtkStatusbar *status_bar; gint position_updater_id; GtkRange *seek_range; GtkLabel *amount_played; GtkLabel *amount_to_play; GtkAction *play_action; GtkAction *pause_action; GtkAction *open_file; GtkAction *playlist_next; } DemoGuiPrivate; #define DEMO_GUI_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DEMO_TYPE_GUI, DemoGuiPrivate)) /* forward declarations */ static GValueArray *build_gvalue_array (guint n_values, ...); /* Handlers for status bar and seek bar */ static int pop_status_bar (gpointer data) { GValueArray *gvalues = (GValueArray *) data; GtkStatusbar *sb = GTK_STATUSBAR (g_value_get_object (g_value_array_get_nth (gvalues, 0))); guint msg_id = g_value_get_uint (g_value_array_get_nth (gvalues, 1)); gtk_statusbar_remove (sb, 0, msg_id); return FALSE; } #define DEFAULT_STATUS_BAR_TIMEOUT 2 static void status_bar_printf (GtkStatusbar * sb, guint seconds, gchar const *format, ...) { va_list args; gchar msg[80]; guint msg_id; va_start (args, format); g_vsnprintf (msg, 80, format, args); va_end (args); msg_id = gtk_statusbar_push (sb, 0, msg); g_timeout_add (2000, pop_status_bar, build_gvalue_array (2, G_TYPE_OBJECT, sb, G_TYPE_UINT, msg_id)); } #define PRINTF_TIME_FORMAT "u:%02u:%02u" #define PRINTF_TIME_ARGS(t) \ (t >= 0) ? (guint) ((t) / (60 * 60)) : 99, \ (t >= 0) ? (guint) (((t) / (60)) % 60) : 99, \ (t >= 0) ? (guint) ((t) % 60) : 99 static gchar * demo_gui_seek_bar_format (GtkScale * scale, gdouble value, gpointer data) { return g_strdup_printf ("%" PRINTF_TIME_FORMAT, PRINTF_TIME_ARGS ((gint64) value)); } static gboolean update_position (gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gchar pos_str[16], dur_str[16]; gint pos = demo_player_get_position (priv->player); if (pos > 0) { gint dur = demo_player_get_duration (priv->player); g_snprintf (pos_str, 16, "%" PRINTF_TIME_FORMAT, PRINTF_TIME_ARGS (pos)); if (dur > 0) { g_snprintf (dur_str, 16, "-%" PRINTF_TIME_FORMAT, PRINTF_TIME_ARGS (dur - pos)); } else { dur = pos; g_sprintf (dur_str, "-??:??:??"); } if (dur > 0) gtk_range_set_range (GTK_RANGE (priv->seek_range), 0, (gdouble) dur); gtk_range_set_value (GTK_RANGE (priv->seek_range), (gdouble) pos); } else { g_sprintf (pos_str, "??:??:??"); g_sprintf (dur_str, "-??:??:??"); } gtk_label_set_text (GTK_LABEL (priv->amount_played), pos_str); gtk_label_set_text (GTK_LABEL (priv->amount_to_play), dur_str); return priv->is_playing; } static gboolean demo_gui_seek_bar_change (GtkRange * range, GtkScrollType scroll, gdouble value, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gint new_second = (gint) value; status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Seeking to %i second", new_second); demo_player_seek_to (priv->player, new_second); return FALSE; } /* Callbacks for actions */ static void demo_gui_do_change_rate (GtkAction * action, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = g_value_get_object (g_value_array_get_nth (gvalues, 0)); gdouble scale_amount = g_value_get_double (g_value_array_get_nth (gvalues, 1)); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Changing rate by %3.2lf", scale_amount); demo_player_scale_rate (priv->player, scale_amount); } static void demo_gui_do_set_rate (GtkAction * action, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = g_value_get_object (g_value_array_get_nth (gvalues, 0)); gdouble new_rate = g_value_get_double (g_value_array_get_nth (gvalues, 1)); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Setting rate to %3.2lf", new_rate); demo_player_set_rate (priv->player, new_rate); } static gboolean demo_gui_do_rate_entered (GtkWidget * widget, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gchar *err = NULL; const gchar *text = gtk_entry_get_text (GTK_ENTRY (widget)); double new_rate = g_strtod (text, &err); if (*err) { gtk_widget_error_bell (priv->window); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Invalid rate: %s", text); return TRUE; } status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Setting rate to %3.2lf", new_rate); demo_player_set_rate (priv->player, new_rate); return FALSE; } static void demo_gui_do_toggle_advanced (GtkAction * action, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); GtkWidget *stride_ui = GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 1))); GtkWidget *overlap_ui = GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 2))); GtkWidget *search_ui = GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 3))); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gboolean active; status_bar_printf (priv->status_bar, 1, "Toggling advanced mode"); active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)); gtk_widget_set_sensitive (stride_ui, active); gtk_widget_set_sensitive (overlap_ui, active); gtk_widget_set_sensitive (search_ui, active); } static void demo_gui_do_toggle_disabled (GtkAction * action, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); GtkAction *advanced_action = GTK_ACTION (g_value_get_object (g_value_array_get_nth (gvalues, 1))); GtkWidget *advanced_ui = GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 2))); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gboolean active; status_bar_printf (priv->status_bar, 1, "Toggling disabled"); active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)); gtk_action_set_sensitive (GTK_ACTION (advanced_action), !active); gtk_widget_set_sensitive (GTK_WIDGET (advanced_ui), !active); g_object_set (G_OBJECT (priv->player), "disabled", active, NULL); } static void demo_gui_do_seek (GtkAction * action, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); gint seconds = g_value_get_int (g_value_array_get_nth (gvalues, 1)); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Requesting seek by %i seconds", seconds); demo_player_seek_by (priv->player, seconds); } static void demo_gui_do_play (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); if (priv->is_playing) { g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, "Already playing"); return; } status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Requesting playback start"); demo_player_play (priv->player); } static void demo_gui_do_pause (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); if (!priv->is_playing) { g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, "Already paused"); return; } status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Requesting playback pause"); demo_player_pause (priv->player); } static void demo_gui_do_play_pause (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Reqesting playback toggle"); if (priv->is_playing) gtk_action_activate (priv->pause_action); else gtk_action_activate (priv->play_action); } static void demo_gui_do_open_file (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); GtkWidget *dialog = gtk_file_chooser_dialog_new ("Open File", GTK_WINDOW (priv->window), GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL); if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT) { char *filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog)); GError *err = NULL; g_list_free (priv->uris); priv->uris = NULL; priv->now_playing = NULL; demo_player_load_uri (priv->player, g_filename_to_uri (filename, NULL, &err)); g_free (filename); } gtk_widget_destroy (dialog); } static void demo_gui_do_playlist_prev (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); if (priv->now_playing) { if (priv->now_playing->prev) { status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playlist previous"); priv->now_playing = priv->now_playing->prev; } else { priv->now_playing = NULL; gtk_widget_error_bell (priv->window); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Beginning of playlist"); return; } } else if (priv->uris) { status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playlist previous: wrap"); priv->now_playing = g_list_last (priv->uris); } else { gtk_action_activate (priv->open_file); return; } demo_player_load_uri (priv->player, priv->now_playing->data); } static void demo_gui_do_playlist_next (GtkAction * action, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); if (priv->now_playing) { if (priv->now_playing->next) { status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playlist next"); priv->now_playing = priv->now_playing->next; } else { priv->now_playing = NULL; gtk_widget_error_bell (priv->window); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "End of playlist"); return; } } else if (priv->uris) { status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playlist next: wrap"); priv->now_playing = priv->uris; } else { gtk_action_activate (priv->open_file); return; } demo_player_load_uri (priv->player, priv->now_playing->data); } static void demo_gui_do_about_dialog (GtkAction * action, gpointer data) { static const gchar *authors[] = { "Rov Juvano ", NULL }; gtk_show_about_dialog (NULL, "program-name", "gst-scaletempo-demo", "version", VERSION, "authors", authors, "license", "This program is free software: you can redistribute it and/or modify\n\ it under the terms of the GNU General Public License as published by\n\ the Free Software Foundation, either version 3 of the License, or\n\ (at your option) any later version.\n\ \n\ This program is distributed in the hope that it will be useful,\n\ but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ GNU General Public License for more details.\n\ \n\ You should have received a copy of the GNU General Public License\n\ along with this program. If not, see .", "title", "About gst-scaletempo-demo", NULL); } static void demo_gui_do_quit (gpointer source, gpointer data) { gtk_main_quit (); g_signal_emit (DEMO_GUI (data), demo_gui_signals[SIGNAL_QUITING], 0, NULL); } static gboolean demo_gui_request_set_stride (GtkSpinButton * spinbutton, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); guint new_stride = gtk_spin_button_get_value_as_int (spinbutton); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Reqesting setting stride to %u ms", new_stride); g_object_set (G_OBJECT (priv->player), "stride", new_stride, NULL); return TRUE; } static gboolean demo_gui_request_set_overlap (GtkSpinButton * spinbutton, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gdouble new_overlap = gtk_spin_button_get_value_as_int (spinbutton); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Requesting setting overlap to %2.0lf%%", new_overlap); g_object_set (G_OBJECT (priv->player), "overlap", new_overlap / 100.0, NULL); return TRUE; } static gboolean demo_gui_request_set_search (GtkSpinButton * spinbutton, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); guint new_search = gtk_spin_button_get_value_as_int (spinbutton); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Requesting setting search to %u ms", new_search); g_object_set (G_OBJECT (priv->player), "search", new_search, NULL); return TRUE; } /* Callbacks from signals */ static void demo_gui_rate_changed (DemoPlayer * player, gdouble new_rate, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gchar e[6]; status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Rate changed to %3.2lf", new_rate); g_snprintf (e, 6, "%3.2f", new_rate); gtk_entry_set_text (GTK_ENTRY (priv->rate_entry), e); } static void demo_gui_playing_started (DemoPlayer * player, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); priv->is_playing = TRUE; status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playing started"); gtk_action_set_sensitive (priv->play_action, FALSE); gtk_action_set_sensitive (priv->pause_action, TRUE); gtk_action_set_visible (priv->play_action, FALSE); gtk_action_set_visible (priv->pause_action, TRUE); if (priv->position_updater_id) { g_source_remove (priv->position_updater_id); priv->position_updater_id = 0; } update_position (gui); priv->position_updater_id = g_timeout_add (1000, update_position, gui); } static void demo_gui_playing_paused (DemoPlayer * player, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gtk_action_set_sensitive (priv->play_action, TRUE); gtk_action_set_sensitive (priv->pause_action, FALSE); gtk_action_set_visible (priv->play_action, TRUE); gtk_action_set_visible (priv->pause_action, FALSE); priv->is_playing = FALSE; if (priv->position_updater_id) g_source_remove (priv->position_updater_id); priv->position_updater_id = 0; update_position (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playing paused"); } static void demo_gui_playing_ended (DemoPlayer * player, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Playing ended"); gtk_action_activate (priv->playlist_next); } static void demo_gui_player_errored (DemoPlayer * player, const gchar * msg, gpointer data) { DemoGui *gui = DEMO_GUI (data); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); status_bar_printf (priv->status_bar, 5, msg); } static void demo_gui_stride_changed (DemoPlayer * player, GParamSpec * pspec, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); GtkEntry *entry = GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1))); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); guint new_stride; gchar e[6]; g_object_get (G_OBJECT (player), "stride", &new_stride, NULL); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Stride changed to %u", new_stride); snprintf (e, 6, "%u", new_stride); gtk_entry_set_text (entry, e); } static void demo_gui_overlap_changed (DemoPlayer * player, GParamSpec * pspec, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); GtkEntry *entry = GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1))); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); gdouble new_overlap; gchar e[6]; g_object_get (G_OBJECT (player), "overlap", &new_overlap, NULL); new_overlap *= 100; status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Overlap changed to %2.0lf%%", new_overlap); snprintf (e, 6, "%2.0f", new_overlap); gtk_entry_set_text (entry, e); } static void demo_gui_search_changed (DemoPlayer * player, GParamSpec * pspec, gpointer data) { GValueArray *gvalues = (GValueArray *) data; DemoGui *gui = DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0))); GtkEntry *entry = GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1))); DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); guint new_search; gchar e[6]; g_object_get (G_OBJECT (player), "search", &new_search, NULL); status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT, "Search changed to %u", new_search); snprintf (e, 6, "%u", new_search); gtk_entry_set_text (entry, e); } /* method implementations */ static void demo_gui_set_player_func (DemoGui * gui, DemoPlayer * player) { DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); if (priv->player) { g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player), G_CALLBACK (demo_gui_rate_changed), gui); g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player), G_CALLBACK (demo_gui_playing_started), gui); g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player), G_CALLBACK (demo_gui_playing_paused), gui); g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player), G_CALLBACK (demo_gui_playing_ended), gui); g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player), G_CALLBACK (demo_gui_player_errored), gui); g_object_unref (priv->player); } g_object_ref (player); priv->player = player; g_signal_connect (G_OBJECT (priv->player), "error", G_CALLBACK (demo_gui_player_errored), gui); g_signal_connect (G_OBJECT (priv->player), "rate-changed", G_CALLBACK (demo_gui_rate_changed), gui); g_signal_connect (G_OBJECT (priv->player), "playing-started", G_CALLBACK (demo_gui_playing_started), gui); g_signal_connect (G_OBJECT (priv->player), "playing-paused", G_CALLBACK (demo_gui_playing_paused), gui); g_signal_connect (G_OBJECT (priv->player), "playing-ended", G_CALLBACK (demo_gui_playing_ended), gui); priv->is_playing = FALSE; } static void demo_gui_set_playlist_func (DemoGui * gui, GList * uris) { DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); priv->uris = uris; } typedef struct _ActionEntry { GtkAction *action; GtkWidget *button; const gchar *accel; const gchar *name; const gchar *label; const gchar *tooltip; const gchar *stock_id; GtkAccelGroup *accel_group; GtkActionGroup *action_group; GCallback callback; gpointer data; } ActionEntry; static GValueArray * build_gvalue_array (guint n_values, ...) { va_list args; GValueArray *gva; int i; va_start (args, n_values); gva = g_value_array_new (n_values); for (i = 0; i < n_values; i++) { GType type = va_arg (args, GType); GValue *gval = g_new0 (GValue, 1); if (type == G_TYPE_INT) { gint value = va_arg (args, gint); g_value_set_int (g_value_init (gval, G_TYPE_INT), value); } else if (type == G_TYPE_UINT) { guint value = va_arg (args, guint); g_value_set_uint (g_value_init (gval, G_TYPE_UINT), value); } else if (type == G_TYPE_DOUBLE) { double value = va_arg (args, double); g_value_set_double (g_value_init (gval, G_TYPE_DOUBLE), value); } else if (type == G_TYPE_OBJECT) { GObject *value = va_arg (args, GObject *); g_value_set_object (g_value_init (gval, G_TYPE_OBJECT), value); } else { g_critical ("build_gvalue_array cannot handle type (%s)", g_type_name (type)); va_end (args); return NULL; } g_value_array_append (gva, gval); } va_end (args); return gva; } static void create_action (ActionEntry * p) { p->action = gtk_action_new (p->name, p->label, p->tooltip, p->stock_id); gtk_action_group_add_action_with_accel (p->action_group, p->action, p->accel); gtk_action_set_accel_group (p->action, p->accel_group); gtk_action_connect_accelerator (p->action); p->button = gtk_button_new (); #if GTK_CHECK_VERSION (2, 16, 0) gtk_activatable_set_related_action (GTK_ACTIVATABLE (p->button), p->action); #else gtk_action_connect_proxy (p->action, p->button); #endif gtk_button_set_image (GTK_BUTTON (p->button), gtk_action_create_icon (p->action, GTK_ICON_SIZE_BUTTON)); g_signal_connect (G_OBJECT (p->action), "activate", p->callback, p->data); } static void demo_gui_show_func (DemoGui * gui) { DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); GtkWidget *window; GtkAccelGroup *accel_group; GtkActionGroup *action_group; GtkAction *toggle_advanced, *toggle_disabled; ActionEntry *slower_lg, *slower_sm, *faster_sm, *faster_lg, *normal, *rewind_lg, *rewind_sm, *forward_sm, *forward_lg, *pause, *play, *play_pause, *open_file, *playlist_prev, *playlist_next, *quit, *about; GtkRequisition pause_size; GtkWidget *rate_entry, *rate_label, *toolbox, *stride_ui, *overlap_ui, *search_ui, *propbox, *adv_check, *disabled_check, *media_controls, *amount_played, *amount_to_play, *seek_range, *seek_bar, *status_bar, *file_menu, *file_menu_item, *media_menu_item, *demo_menu, *demo_menu_item, *menu_bar, *toplevel_box, *media_menu; GError *error = NULL; gtk_init (NULL, NULL); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (demo_gui_do_quit), gui); accel_group = gtk_accel_group_new (); gtk_window_add_accel_group (GTK_WINDOW (window), accel_group); action_group = gtk_action_group_new ("toolbar"); slower_lg = &(ActionEntry) { NULL, NULL, "braceleft", "slower-large", "2x Slower", "half playback rate", GTK_STOCK_GO_DOWN, accel_group, action_group, G_CALLBACK (demo_gui_do_change_rate), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 0.5) }; create_action (slower_lg); slower_sm = &(ActionEntry) { NULL, NULL, "bracketleft", "slower-small", "_Slower", "decrease playback rate", GTK_STOCK_GO_DOWN, accel_group, action_group, G_CALLBACK (demo_gui_do_change_rate), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, pow (2, -1.0 / 12)) }; create_action (slower_sm); faster_sm = &(ActionEntry) { NULL, NULL, "bracketright", "faster-small", "_Faster", "increase playback rate", GTK_STOCK_GO_UP, accel_group, action_group, G_CALLBACK (demo_gui_do_change_rate), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, pow (2, 1.0 / 12)) }; create_action (faster_sm); faster_lg = &(ActionEntry) { NULL, NULL, "braceright", "faster-large", "2X Faster", "double playback rate", GTK_STOCK_GO_UP, accel_group, action_group, G_CALLBACK (demo_gui_do_change_rate), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 2.0) }; create_action (faster_lg); normal = &(ActionEntry) { NULL, NULL, "backslash", "normal", "_Normal", "playback normal rate", GTK_STOCK_CLEAR, accel_group, action_group, G_CALLBACK (demo_gui_do_set_rate), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 1.0) }; create_action (normal); rewind_lg = &(ActionEntry) { NULL, NULL, "Left", "seek-rewind-large", "Rewind (large)", "seek -30 seconds", GTK_STOCK_MEDIA_REWIND, accel_group, action_group, G_CALLBACK (demo_gui_do_seek), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, -30) }; create_action (rewind_lg); rewind_sm = &(ActionEntry) { NULL, NULL, "Left", "seek-rewind-small", "Rewind", "seek -15 seconds", GTK_STOCK_MEDIA_REWIND, accel_group, action_group, G_CALLBACK (demo_gui_do_seek), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, -5) }; create_action (rewind_sm); forward_sm = &(ActionEntry) { NULL, NULL, "Right", "seek-forward-small", "Forward", "seek +5 seconds", GTK_STOCK_MEDIA_FORWARD, accel_group, action_group, G_CALLBACK (demo_gui_do_seek), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, 5) }; create_action (forward_sm); forward_lg = &(ActionEntry) { NULL, NULL, "Right", "seek-forward-large", "Forward (large)", "seek +30 seconds", GTK_STOCK_MEDIA_FORWARD, accel_group, action_group, G_CALLBACK (demo_gui_do_seek), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, 30) }; create_action (forward_lg); pause = &(ActionEntry) { NULL, NULL, "p", "pause", "Pause", "Pause playback", GTK_STOCK_MEDIA_PAUSE, accel_group, action_group, G_CALLBACK (demo_gui_do_pause), gui}; create_action (pause); play = &(ActionEntry) { NULL, NULL, "p", "play", "Play", "Start Playback", GTK_STOCK_MEDIA_PLAY, accel_group, action_group, G_CALLBACK (demo_gui_do_play), gui}; create_action (play); gtk_widget_size_request (pause->button, &pause_size); gtk_widget_set_size_request (play->button, pause_size.width, -1); play_pause = &(ActionEntry) { NULL, NULL, "space", "play-pause", "Play/Pause", "Toggle playback", NULL, accel_group, action_group, G_CALLBACK (demo_gui_do_play_pause), gui}; create_action (play_pause); open_file = &(ActionEntry) { NULL, NULL, "o", "open-file", "Open File", "Open file for playing", GTK_STOCK_OPEN, accel_group, action_group, G_CALLBACK (demo_gui_do_open_file), gui}; create_action (open_file); playlist_prev = &(ActionEntry) { NULL, NULL, "less", "playlist-previous", "Previous", "Previous in playlist", GTK_STOCK_MEDIA_PREVIOUS, accel_group, action_group, G_CALLBACK (demo_gui_do_playlist_prev), gui}; create_action (playlist_prev); playlist_next = &(ActionEntry) { NULL, NULL, "greater", "playlist-next", "Next", "Next in playlist", GTK_STOCK_MEDIA_NEXT, accel_group, action_group, G_CALLBACK (demo_gui_do_playlist_next), gui}; create_action (playlist_next); quit = &(ActionEntry) { NULL, NULL, "q", "quit", "Quit", "Quit demo", GTK_STOCK_QUIT, accel_group, action_group, G_CALLBACK (demo_gui_do_quit), gui}; create_action (quit); about = &(ActionEntry) { NULL, NULL, "h", "about", "About", "About gst-scaletemo-demo", GTK_STOCK_ABOUT, accel_group, action_group, G_CALLBACK (demo_gui_do_about_dialog), gui}; create_action (about); rate_entry = gtk_entry_new (); rate_label = gtk_label_new ("Rate:"); gtk_entry_set_max_length (GTK_ENTRY (rate_entry), 5); gtk_entry_set_text (GTK_ENTRY (rate_entry), "1.0"); gtk_entry_set_width_chars (GTK_ENTRY (rate_entry), 5); g_signal_connect (G_OBJECT (rate_entry), "activate", G_CALLBACK (demo_gui_do_rate_entered), gui); toolbox = gtk_hbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (toolbox), slower_sm->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toolbox), rate_label, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toolbox), rate_entry, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toolbox), faster_sm->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toolbox), normal->button, FALSE, FALSE, 2); stride_ui = gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (60, 1, 1000, 1, 10, 0)), 0, 0); overlap_ui = gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (20, 0, 100, 5, 10, .00001)), 0, 0); search_ui = gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (14, 0, 1000, 1, 10, 0)), 0, 0); gtk_widget_set_sensitive (stride_ui, FALSE); gtk_widget_set_sensitive (overlap_ui, FALSE); gtk_widget_set_sensitive (search_ui, FALSE); g_signal_connect (G_OBJECT (stride_ui), "output", G_CALLBACK (demo_gui_request_set_stride), gui); g_signal_connect (G_OBJECT (overlap_ui), "output", G_CALLBACK (demo_gui_request_set_overlap), gui); g_signal_connect (G_OBJECT (search_ui), "output", G_CALLBACK (demo_gui_request_set_search), gui); g_signal_connect (G_OBJECT (priv->player), "notify::stride", G_CALLBACK (demo_gui_stride_changed), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_OBJECT, stride_ui)); g_signal_connect (G_OBJECT (priv->player), "notify::overlap", G_CALLBACK (demo_gui_overlap_changed), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_OBJECT, overlap_ui)); g_signal_connect (G_OBJECT (priv->player), "notify::search", G_CALLBACK (demo_gui_search_changed), build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_OBJECT, search_ui)); propbox = gtk_hbox_new (FALSE, 0); adv_check = gtk_check_button_new (); gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("stride:"), FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), stride_ui, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("overlap:"), FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), overlap_ui, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("search:"), FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), search_ui, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (propbox), adv_check, FALSE, FALSE, 2); toggle_advanced = GTK_ACTION (gtk_toggle_action_new ("advanced", "Enable Parameters", "Toggle advanced controls", 0)); gtk_action_group_add_action_with_accel (action_group, toggle_advanced, "a"); gtk_action_set_accel_group (toggle_advanced, accel_group); gtk_action_connect_accelerator (toggle_advanced); gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (toggle_advanced), FALSE); #if GTK_CHECK_VERSION (2, 16, 0) gtk_activatable_set_related_action (GTK_ACTIVATABLE (adv_check), toggle_advanced); #else gtk_action_connect_proxy (toggle_advanced, adv_check); #endif g_signal_connect (G_OBJECT (toggle_advanced), "activate", G_CALLBACK (demo_gui_do_toggle_advanced), build_gvalue_array (4, G_TYPE_OBJECT, gui, G_TYPE_OBJECT, stride_ui, G_TYPE_OBJECT, overlap_ui, G_TYPE_OBJECT, search_ui)); toggle_disabled = GTK_ACTION (gtk_toggle_action_new ("disabled", "Disable Scaletempo", "Toggle disabling scaletempo", 0)); gtk_action_group_add_action_with_accel (action_group, toggle_disabled, "d"); gtk_action_set_accel_group (toggle_disabled, accel_group); gtk_action_connect_accelerator (toggle_disabled); gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (toggle_disabled), FALSE); disabled_check = gtk_check_button_new (); #if GTK_CHECK_VERSION (2, 16, 0) gtk_activatable_set_related_action (GTK_ACTIVATABLE (disabled_check), toggle_disabled); #else gtk_action_connect_proxy (toggle_disabled, disabled_check); #endif g_signal_connect (G_OBJECT (toggle_disabled), "activate", G_CALLBACK (demo_gui_do_toggle_disabled), build_gvalue_array (3, G_TYPE_OBJECT, gui, G_TYPE_OBJECT, toggle_advanced, G_TYPE_OBJECT, propbox)); gtk_box_pack_start (GTK_BOX (toolbox), disabled_check, FALSE, FALSE, 2); media_controls = gtk_hbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (media_controls), playlist_prev->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (media_controls), rewind_sm->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (media_controls), play->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (media_controls), pause->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (media_controls), forward_sm->button, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (media_controls), playlist_next->button, FALSE, FALSE, 2); amount_played = gtk_label_new ("?:??:??"); amount_to_play = gtk_label_new ("-?:??:??"); gtk_label_set_width_chars (GTK_LABEL (amount_played), 8); gtk_label_set_width_chars (GTK_LABEL (amount_to_play), 8); gtk_misc_set_alignment (GTK_MISC (amount_played), 1, 1); gtk_misc_set_alignment (GTK_MISC (amount_to_play), 0, 1); seek_range = gtk_hscale_new (GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 5.0, 30.0, 0.00))); #if !GTK_CHECK_VERSION (3, 0, 0) gtk_range_set_update_policy (GTK_RANGE (seek_range), GTK_UPDATE_DISCONTINUOUS); #endif seek_bar = gtk_hbox_new (FALSE, 0); gtk_box_pack_start (GTK_BOX (seek_bar), amount_played, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (seek_bar), seek_range, TRUE, TRUE, 2); gtk_box_pack_start (GTK_BOX (seek_bar), amount_to_play, FALSE, FALSE, 2); g_signal_connect (G_OBJECT (seek_range), "format-value", G_CALLBACK (demo_gui_seek_bar_format), gui); g_signal_connect (G_OBJECT (seek_range), "change-value", G_CALLBACK (demo_gui_seek_bar_change), gui); status_bar = gtk_statusbar_new (); /* Menubar */ file_menu = gtk_menu_new (); gtk_menu_set_accel_group (GTK_MENU (file_menu), accel_group); gtk_menu_shell_append (GTK_MENU_SHELL (file_menu), gtk_action_create_menu_item (open_file->action)); gtk_menu_shell_append (GTK_MENU_SHELL (file_menu), gtk_action_create_menu_item (about->action)); gtk_menu_shell_append (GTK_MENU_SHELL (file_menu), gtk_action_create_menu_item (quit->action)); file_menu_item = gtk_menu_item_new_with_mnemonic ("_File"); gtk_menu_item_set_submenu (GTK_MENU_ITEM (file_menu_item), file_menu); media_menu = gtk_menu_new (); gtk_menu_set_accel_group (GTK_MENU (media_menu), accel_group); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (rewind_lg->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (rewind_sm->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (forward_sm->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (forward_lg->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (play->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (pause->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (play_pause->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (playlist_prev->action)); gtk_menu_shell_append (GTK_MENU_SHELL (media_menu), gtk_action_create_menu_item (playlist_next->action)); media_menu_item = gtk_menu_item_new_with_mnemonic ("_Media"); gtk_menu_item_set_submenu (GTK_MENU_ITEM (media_menu_item), media_menu); demo_menu = gtk_menu_new (); gtk_menu_set_accel_group (GTK_MENU (demo_menu), accel_group); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (faster_lg->action)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (faster_sm->action)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (slower_sm->action)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (slower_lg->action)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (normal->action)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (toggle_disabled)); gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu), gtk_action_create_menu_item (toggle_advanced)); demo_menu_item = gtk_menu_item_new_with_mnemonic ("_Scaletempo"); gtk_menu_item_set_submenu (GTK_MENU_ITEM (demo_menu_item), demo_menu); menu_bar = gtk_menu_bar_new (); gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), file_menu_item); gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), media_menu_item); gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), demo_menu_item); /* Toplevel Window */ gtk_window_set_title (GTK_WINDOW (window), "Scaletempo Demo"); toplevel_box = gtk_vbox_new (FALSE, 0); gtk_container_set_border_width (GTK_CONTAINER (toplevel_box), 3); gtk_container_add (GTK_CONTAINER (window), toplevel_box); gtk_box_pack_start (GTK_BOX (toplevel_box), menu_bar, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toplevel_box), media_controls, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toplevel_box), toolbox, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toplevel_box), propbox, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toplevel_box), seek_bar, FALSE, FALSE, 2); gtk_box_pack_start (GTK_BOX (toplevel_box), status_bar, FALSE, FALSE, 2); priv->window = window; priv->rate_entry = GTK_ENTRY (rate_entry); priv->status_bar = GTK_STATUSBAR (status_bar); priv->seek_range = GTK_RANGE (seek_range); priv->amount_played = GTK_LABEL (amount_played); priv->amount_to_play = GTK_LABEL (amount_to_play); priv->play_action = GTK_ACTION (play->action); priv->pause_action = GTK_ACTION (pause->action); priv->open_file = GTK_ACTION (open_file->action); priv->playlist_next = GTK_ACTION (playlist_next->action); gtk_action_set_sensitive (priv->pause_action, FALSE); gtk_action_set_visible (priv->pause_action, FALSE); gtk_widget_show_all (window); gtk_widget_grab_focus (seek_range); gtk_action_activate (priv->playlist_next); status_bar_printf (GTK_STATUSBAR (status_bar), 5, "Welcome to the Scaletempo demo."); if (!g_thread_try_new ("name", (GThreadFunc) gtk_main, NULL, &error)) { g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, error->message); } } /* Method wrappers */ void demo_gui_set_player (DemoGui * gui, DemoPlayer * player) { g_return_if_fail (DEMO_IS_GUI (gui)); g_return_if_fail (DEMO_IS_PLAYER (player)); DEMO_GUI_GET_CLASS (gui)->set_player (gui, player); } void demo_gui_set_playlist (DemoGui * gui, GList * uris) { g_return_if_fail (DEMO_IS_GUI (gui)); DEMO_GUI_GET_CLASS (gui)->set_playlist (gui, uris); } void demo_gui_show (DemoGui * gui) { g_return_if_fail (DEMO_IS_GUI (gui)); DEMO_GUI_GET_CLASS (gui)->show (gui); } /* GObject overrides */ static void demo_gui_get_property (GObject * object, guint property_id, GValue * value, GParamSpec * pspec) { //DemoGui *gui = DEMO_GUI (object); switch (property_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void demo_gui_set_property (GObject * object, guint property_id, const GValue * value, GParamSpec * pspec) { //DemoGui *gui = DEMO_GUI (object); switch (property_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } /* GTypeInfo functions */ static void demo_gui_init (GTypeInstance * instance, gpointer klass) { DemoGui *gui = (DemoGui *) instance; DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui); priv->player = NULL; priv->uris = NULL; priv->now_playing = NULL; priv->is_playing = FALSE; priv->window = NULL; priv->rate_entry = NULL; priv->position_updater_id = 0; priv->seek_range = NULL; priv->amount_played = NULL; priv->amount_to_play = NULL; } static void demo_gui_class_init (gpointer klass, gpointer class_data) { DemoGuiClass *gui_class = (DemoGuiClass *) klass; GObjectClass *as_object_class = G_OBJECT_CLASS (klass); GType type; g_type_class_add_private (klass, sizeof (DemoGuiPrivate)); /* DemiPlayer */ gui_class->set_player = demo_gui_set_player_func; gui_class->set_playlist = demo_gui_set_playlist_func; gui_class->show = demo_gui_show_func; /* GObject */ as_object_class->get_property = demo_gui_get_property; as_object_class->set_property = demo_gui_set_property; /* Properties */ /* Signals */ type = G_TYPE_FROM_CLASS (klass); demo_gui_signals[SIGNAL_ERROR] = g_signal_new ("error", type, G_SIGNAL_RUN_FIRST, 0, NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); demo_gui_signals[SIGNAL_QUITING] = g_signal_new ("quiting", type, G_SIGNAL_RUN_FIRST, 0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, NULL); } GType demo_gui_get_type (void) { static GType type = 0; if (G_UNLIKELY (type == 0)) { static const GTypeInfo info = { sizeof /* Class */ (DemoGuiClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) demo_gui_class_init, (GClassFinalizeFunc) NULL, (gconstpointer) NULL, /* class_data */ sizeof /* Instance */ (DemoGui), /* n_preallocs */ 0, (GInstanceInitFunc) demo_gui_init, (const GTypeValueTable *) NULL }; type = g_type_register_static (G_TYPE_OBJECT, "DemoGui", &info, 0); } return type; }