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maemo-ui/src/mmyth_epg_grid_widget.c
author rosfran
Mon Apr 30 18:54:25 2007 +0100 (2007-04-30)
branchtrunk
changeset 606 45798efca6ef
parent 245 f9329edd3b5e
child 754 cb885ee44618
permissions -rw-r--r--
[svn r612] Optimizations - doesn't need to call all the time the URI functions to see if is a LiveTV, and if it is a local file URI. 
     1 #include <gtk/gtksignal.h>

     2 #include <gdk/gdkevents.h>

     3 #include <gdk/gdkkeysyms.h>

     4 

     5 #include "mmyth_uicommon.h"

     6 #include "mmyth_epg_grid_widget.h"

     7 

     8 #include <gmyth/gmyth_util.h>

     9 #include <gmyth/gmyth_epg.h>

    10 

    11 #define PIXELS_HOUR 105

    12 #define PROGRAM_SEPARATION 2

    13 

    14 enum {

    15   SELECTION_UPDATED_SIGNAL,

    16   LAST_SIGNAL

    17 };

    18 

    19 struct _MMythEpgGridWidgetPrivate {

    20     /* private widget components */

    21     GtkWidget *epg_channels_vbox;

    22     GtkWidget *epg_programs_vbox;

    23  

    24     GHashTable *service_model_hash;

    25     

    26     /* guidegrid attributes */

    27     gboolean show_favorites;

    28     gint current_start_channel_id;

    29     

    30     GTimeVal* current_start_time;

    31     GTimeVal* current_end_time;

    32 

    33     guint selected_channel_index;

    34     

    35     /* GList of ProgramInfo for each Channel */

    36     GList * program_list[MAX_DISPLAY_CHANS];

    37     GList * channel_list;

    38     

    39     GMythEPG *mmyth_epg;

    40 

    41     GMythBackendInfo *backend_info;

    42     

    43     gint DISPLAY_CHANS;

    44 };

    45 

    46 static void mmyth_epg_grid_widget_class_init          (MMythEpgGridWidgetClass *klass);

    47 static void mmyth_epg_grid_widget_init                (MMythEpgGridWidget *object);

    48 static void mmyth_epg_grid_widget_private_init        (MMythEpgGridWidgetPrivate *private);

    49 static void mmyth_epg_grid_widget_mount_services      (MMythEpgGridWidget *object, 

    50                                                        GTimeVal* start_time, GTimeVal* end_time);

    51 static void mmyth_epg_grid_widget_mount_header        (MMythEpgGridWidget *object);

    52 static void mmyth_epg_grid_widget_clicked             (GtkWidget* widget, 

    53                                                        GdkEventExpose *event, 

    54                                                        gpointer data);

    55 static GtkWidget *create_event_box_lbl                (gchar *str, int width, 

    56                                                        const GdkColor *bg_color, 

    57                                                        const GdkColor *fg_color);

    58 

    59 static void mmyth_epg_grid_widget_fill_programinfos(MMythEpgGridWidgetPrivate *private);

    60 static void mmyth_epg_grid_widget_fill_program_row_infos(

    61                     MMythEpgGridWidgetPrivate *private, 

    62                     unsigned int chanNum, unsigned int row);

    63 

    64 static gint mmyth_epg_grid_widget_signals[LAST_SIGNAL] = { 0 };

    65 

    66 G_DEFINE_TYPE(MMythEpgGridWidget, mmyth_epg_grid_widget, GTK_TYPE_EVENT_BOX)

    67     

    68 static void

    69 mmyth_epg_grid_widget_class_init (MMythEpgGridWidgetClass *klass)

    70 {

    71   g_type_class_add_private (klass, sizeof (MMythEpgGridWidgetPrivate));

    72   

    73   mmyth_epg_grid_widget_signals[SELECTION_UPDATED_SIGNAL] = g_signal_new (

    74                      "selection_updated",

    75 					 G_TYPE_FROM_CLASS(klass), 

    76 					 G_SIGNAL_RUN_FIRST,

    77 					 0,

    78                      NULL,

    79                      NULL,

    80 					 g_cclosure_marshal_VOID__POINTER, 

    81                      G_TYPE_NONE, 

    82                      1,

    83                      G_TYPE_POINTER);

    84 }

    85 

    86 static void 

    87 mmyth_epg_grid_widget_private_init (MMythEpgGridWidgetPrivate *private)

    88 {

    89     time_t cur_time;

    90     

    91     g_return_if_fail(private != NULL);     

    92 

    93     private->epg_channels_vbox   = NULL;

    94     private->epg_programs_vbox   = NULL;

    95     private->service_model_hash  = NULL;

    96 

    97     private->show_favorites = FALSE;

    98     private->current_start_channel_id = -1;

    99 

   100     /* Selected the first diplayable channel initially */

   101     private->selected_channel_index = 0;

   102         

   103     /* TODO fix the current start/end time */

   104     private->current_start_time = g_new0( GTimeVal, 1 );

   105     private->current_start_time->tv_sec = time(&cur_time);

   106 

   107     private->current_end_time = g_new0( GTimeVal, 1 );

   108     private->current_end_time->tv_sec = time(&cur_time) + 10800;

   109     

   110     private->DISPLAY_CHANS = MAX_DISPLAY_CHANS;

   111 

   112     private->backend_info = gmyth_backend_info_new_full ( "localhost", "mythtv",

   113     	"mythtv", "mythconverg", 6543 );

   114 

   115     // TODO: Close the epg and unref it in dispose call

   116     private->mmyth_epg = gmyth_epg_new ();

   117     if (!gmyth_epg_connect (private->mmyth_epg, private->backend_info)) {

   118     	g_warning ("[%s] Could not connect mysql handler to db", __FUNCTION__);

   119     	g_object_unref (private->mmyth_epg);

   120     	private->mmyth_epg = NULL;

   121     }

   122 }

   123 

   124 static void

   125 mmyth_epg_grid_widget_init (MMythEpgGridWidget *mmyth_epg_grid_widget)

   126 {

   127     MMythEpgGridWidgetPrivate *private = 

   128         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   129     

   130     /* init private fields */

   131     mmyth_epg_grid_widget_private_init(private);

   132 

   133     mmyth_epg_grid_widget->epg_view_model      = NULL;

   134     mmyth_epg_grid_widget->selected_grid_item  = NULL;

   135 

   136     GtkWidget *epg_event_box = GTK_WIDGET(mmyth_epg_grid_widget);

   137     gtk_widget_modify_bg(epg_event_box, GTK_STATE_NORMAL, &main_bg_color);

   138     gtk_widget_set_size_request (epg_event_box, 0, 125);

   139     

   140     GtkWidget *epg_main_hbox = gtk_hbox_new (FALSE, 10);

   141     gtk_container_set_border_width(GTK_CONTAINER (epg_main_hbox), 10);

   142     

   143     gtk_container_add (GTK_CONTAINER (epg_event_box),

   144                        epg_main_hbox);

   145 		        

   146     /* channels vbox */

   147     GtkWidget *epg_channels_vbox = gtk_vbox_new (FALSE, 3); 

   148     private->epg_channels_vbox = epg_channels_vbox; 

   149 

   150     /* programs vbox */

   151     GtkWidget *epg_programs_vbox = gtk_vbox_new (FALSE, 3);

   152     private->epg_programs_vbox = epg_programs_vbox;

   153     

   154     /* packing start */

   155     gtk_box_pack_start (GTK_BOX (epg_main_hbox),

   156 	                epg_channels_vbox, FALSE, FALSE, 0);

   157     gtk_box_pack_start (GTK_BOX (epg_main_hbox),

   158                         epg_programs_vbox, FALSE, FALSE, 0);

   159 

   160     /* table header (first line) */  

   161     mmyth_epg_grid_widget_mount_header(mmyth_epg_grid_widget);                 

   162     

   163     /* service programs */ 

   164     /* mount service programs with current time */

   165     mmyth_epg_grid_widget_mount_services(mmyth_epg_grid_widget, 

   166                                          private->current_start_time,

   167                                          private->current_end_time);                                           

   168 }

   169 

   170 GtkWidget*

   171 mmyth_epg_grid_widget_new ()

   172 {

   173   return GTK_WIDGET ( gtk_type_new (mmyth_epg_grid_widget_get_type ()));

   174 }

   175 

   176 static void

   177 mmyth_epg_grid_widget_mount_services( MMythEpgGridWidget *mmyth_epg_grid_widget, 

   178                                      GTimeVal* start_time, GTimeVal* end_time )

   179 {

   180     GList *proglist;

   181     GList *channel_list = NULL;

   182     GMythChannelInfo *channel_info;

   183 

   184     int chanid;

   185     MMythEpgGridWidgetPrivate *private = 

   186         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   187 	

   188 	// update view_model

   189 	/* FIXME shallow free or recursive? */

   190 	if(mmyth_epg_grid_widget->epg_view_model != NULL) {

   191 		g_list_free(mmyth_epg_grid_widget->epg_view_model);

   192 		mmyth_epg_grid_widget->epg_view_model = NULL;

   193 	}

   194 	

   195 	if(private->service_model_hash != NULL) {

   196 		g_hash_table_destroy(private->service_model_hash);

   197 	}

   198 

   199 	private->service_model_hash = g_hash_table_new(NULL, NULL);

   200 

   201     /* fill program infos from db */

   202     mmyth_epg_grid_widget_fill_programinfos(private);

   203     

   204     channel_list = private->channel_list;

   205  

   206     /* for each channel get_programs() */

   207     for (chanid=0; channel_list &&

   208                    chanid < private->DISPLAY_CHANS; chanid++) {

   209         proglist = (GList *) private->program_list[chanid];        

   210     

   211         channel_info = (GMythChannelInfo *) channel_list->data;

   212         channel_list = g_list_next(channel_list);        

   213 

   214         /* Service Title*/

   215         GString *name = NULL;

   216         if (channel_info->channel_name)

   217         	name = g_string_new (channel_info->channel_name->str);

   218 		

   219 		GdkColor title_bg_color;

   220 		title_bg_color.red = 5000;

   221 		title_bg_color.green = 9000;

   222 		title_bg_color.blue = 40000;        

   223 		

   224 		GdkColor title_fg_color;

   225 		title_fg_color.red = 60000;

   226 		title_fg_color.green = 60000;

   227 		title_fg_color.blue = 60000;        

   228 		

   229 		GtkWidget *event_box_channel = create_event_box_lbl(

   230                                                         name->str, 90, 

   231 									                    &title_bg_color, 

   232 									                    &title_fg_color);

   233 

   234         gtk_box_pack_start (GTK_BOX (private->epg_channels_vbox),

   235 		                    event_box_channel, FALSE, FALSE, 0);

   236 

   237   		GtkWidget *epg_line_hbox = gtk_hbox_new (FALSE, 0);      

   238 

   239 	    GdkColor bg_color;

   240 	    bg_color.red = 5000;

   241 	    bg_color.green = 30000;

   242 	    bg_color.blue = 60000;        

   243 	

   244 	    GdkColor fg_color;

   245 	    fg_color.red = 60000;

   246 	    fg_color.green = 60000;

   247 	    fg_color.blue = 60000;        

   248 		

   249 		/* Content parsing */

   250         GList *epg_grid_list = NULL;

   251 

   252         GMythProgramInfo *proginfo;

   253         int pixel_count = 0;

   254         for (; proglist; proglist = proglist->next) {

   255             proginfo = (GMythProgramInfo *) proglist->data;

   256             

   257             GString *content_name = proginfo->title;

   258                     

   259        	    GTimeVal* initial_time = g_new0( GTimeVal, 1 );

   260 	    GTimeVal* last_time = g_new0( GTimeVal, 1 ); 

   261 	    GTimeVal* duration = g_new0( GTimeVal, 1 );

   262 

   263             GTimeVal* schedule_start_time = proginfo->startts;

   264             GTimeVal* schedule_end_time   = proginfo->endts;

   265 

   266 	        initial_time->tv_sec = 

   267                 (schedule_start_time->tv_sec < start_time->tv_sec) ? start_time->tv_sec : schedule_start_time->tv_sec;

   268             last_time->tv_sec = (schedule_end_time->tv_sec > end_time->tv_sec) ? end_time->tv_sec : schedule_end_time->tv_sec;

   269 	        duration->tv_sec = last_time->tv_sec - initial_time->tv_sec;

   270 		    

   271             // Verify program time 

   272             #if 0

   273 			    g_debug ("ServiceID: %d, ScheduleID: %d\n", service->id, schedule->id);

   274                 fprintf (stderr, "program time\nfrom = %d, to = %d\n", 

   275                          schedule->validFrom, schedule->validTo); 

   276                 

   277                 struct tm loctime;

   278     

   279                 /* Convert it to local time representation. */

   280                 if (localtime_r((time_t *)&schedule->validFrom, &loctime) == NULL) {

   281                     g_warning ("localtime_r error in mmyth_epg_grid_widget!\n");

   282                     return NULL;

   283                 }            

   284                 fprintf (stderr, asctime (&loctime)); 

   285                 

   286                 if (localtime_r((time_t *)&schedule->validTo, &loctime) == NULL) {

   287                     g_warning ("localtime_r error in mmyth_epg_grid_widget!\n");

   288                     return NULL;

   289                 } 

   290                 fprintf (stderr, asctime (&loctime)); 

   291             #endif

   292     		

   293     	    /* fprintf(stderr, "duration = %d\n", duration); */

   294     	    double duration_hour = duration->tv_sec / (double) 3600.0;

   295     	    /* fprintf(stderr, "duration_hour = %lf\n", duration_hour); */

   296     		

   297             int size = PIXELS_HOUR * duration_hour;

   298                 

   299             /* complete hour */

   300             /* FIXME: UGLY WRONG HACK TO ALIGN PROGRAM TIME!!!*/

   301             if( last_time->tv_sec % 3600 != 0 ) {

   302                 size -= PROGRAM_SEPARATION;                

   303             }

   304             if ( initial_time->tv_sec % 3600 != 0 ) {

   305                 size -= PROGRAM_SEPARATION;                

   306             }

   307 

   308             pixel_count += size + PROGRAM_SEPARATION;

   309 	        GtkWidget *event_box = create_event_box_lbl(content_name->str, 

   310 							  size, &bg_color, 

   311 							  &fg_color);

   312 							  gtk_widget_add_events(event_box, 

   313 							  GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

   314             

   315             /* create EpgGridItem */

   316             EpgGridItem *epg_grid_item = g_new0(EpgGridItem, 1);

   317             epg_grid_item->proginfo  = proginfo;

   318             epg_grid_item->event_box = event_box;

   319             epg_grid_item->object    = mmyth_epg_grid_widget;

   320             

   321             epg_grid_list = g_list_prepend(epg_grid_list, (gpointer) epg_grid_item);                                   		                        

   322 

   323      	    gtk_box_pack_start (GTK_BOX (epg_line_hbox),

   324 	                            event_box, FALSE, FALSE, PROGRAM_SEPARATION);

   325 	                                 

   326    	        g_signal_connect (G_OBJECT (event_box), "button-press-event",

   327 		                      G_CALLBACK (mmyth_epg_grid_widget_clicked), 

   328                               (gpointer*) epg_grid_list);

   329         }

   330 #if 0

   331         printf("chaind = %d!!!!" chanid);fflush(stdout);

   332 #endif        

   333 

   334         if(!epg_grid_list) {

   335             /* No programs for current channel */

   336             /* FIXME: size HARDCODED */

   337             GtkWidget *event_box = create_event_box_lbl("No program list available",

   338                               PIXELS_HOUR * 3, &bg_color,

   339                               &fg_color);

   340                               gtk_widget_add_events(event_box,

   341                               GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

   342 

   343             /* create EpgGridItem */

   344             EpgGridItem *epg_grid_item = g_new0(EpgGridItem, 1);

   345             epg_grid_item->proginfo  = NULL;

   346             epg_grid_item->event_box = event_box;

   347             epg_grid_item->object    = mmyth_epg_grid_widget;

   348 

   349             epg_grid_list = g_list_prepend(epg_grid_list, (gpointer) epg_grid_item);

   350             

   351             gtk_box_pack_start (GTK_BOX (epg_line_hbox),

   352 	                            event_box, FALSE, FALSE, PROGRAM_SEPARATION);            	

   353 	                                 

   354    	        g_signal_connect (G_OBJECT (event_box), "button-press-event",

   355 		                      G_CALLBACK (mmyth_epg_grid_widget_clicked),

   356                               (gpointer*) epg_grid_list);

   357         }

   358 

   359         epg_grid_list = g_list_reverse(epg_grid_list);

   360         mmyth_epg_grid_widget->epg_view_model = 

   361               g_list_append(mmyth_epg_grid_widget->epg_view_model, epg_grid_list);

   362         

   363 	    gtk_box_pack_start (GTK_BOX (private->epg_programs_vbox),

   364 	                        epg_line_hbox, FALSE, FALSE,  0);                    		    		

   365     }

   366 }

   367 

   368 static void

   369 mmyth_epg_grid_widget_mount_header(MMythEpgGridWidget *mmyth_epg_grid_widget)

   370 {	          	    

   371     MMythEpgGridWidgetPrivate *private = 

   372         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   373     

   374     struct tm hour_tm;

   375     const gchar name_title[] = "Today";    

   376     GtkWidget * lbl_title = gtk_label_new(name_title);

   377 

   378     gtk_misc_set_alignment (GTK_MISC(lbl_title), 0.0, 0.5);

   379     

   380     gtk_box_pack_start (GTK_BOX (private->epg_channels_vbox),

   381                         lbl_title, FALSE, FALSE, 0);

   382 

   383 	/* hours title line */

   384     GtkWidget *epg_programs_hours_hbox = gtk_hbox_new (TRUE, 0); 

   385 

   386     if (localtime_r((time_t *)&private->current_start_time->tv_sec, &hour_tm) == NULL) {

   387         g_warning ("localtime_r error in mmyth_epg_grid_widget!\n");

   388         return;

   389     }    

   390 

   391     if (hour_tm.tm_min>30) {

   392         hour_tm.tm_min = 30;

   393     } else if (hour_tm.tm_min>0) {

   394         hour_tm.tm_min = 0;

   395     }

   396         

   397     gchar hour1_str[10];

   398     strftime(hour1_str, 8, "%H:%M", &hour_tm);

   399     GtkWidget * lbl_hour1 = gtk_label_new(hour1_str);

   400     gtk_misc_set_alignment (GTK_MISC(lbl_hour1), 0.0, 0.5);    

   401 	

   402     hour_tm.tm_hour++;

   403     gchar hour2_str[10];    

   404     strftime(hour2_str, 8, "%H:%M", &hour_tm);

   405     GtkWidget * lbl_hour2 = gtk_label_new(hour2_str);

   406     gtk_misc_set_alignment (GTK_MISC(lbl_hour2), 0.0, 0.5);        

   407 

   408     hour_tm.tm_hour++;

   409 	gchar hour3_str[10];    

   410     strftime(hour3_str, 8, "%H:%M", &hour_tm);

   411     GtkWidget * lbl_hour3 = gtk_label_new(hour3_str);

   412     gtk_misc_set_alignment (GTK_MISC(lbl_hour3), 0.0, 0.5);        

   413     

   414     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   415                         lbl_hour1, TRUE, TRUE, 0);                    

   416     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   417                         lbl_hour2, TRUE, TRUE, 0);                    

   418     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   419                         lbl_hour3, TRUE, TRUE, 0); 

   420  

   421     gtk_box_pack_start (GTK_BOX (private->epg_programs_vbox),

   422                         epg_programs_hours_hbox, FALSE, FALSE, 0);                        

   423 }

   424 

   425 /******************************************************************************

   426  *              INTERNAL CALLBACKS FOR STATE CHANGE                           *

   427  *****************************************************************************/

   428 static void 

   429 mmyth_epg_grid_widget_deselect_service(MMythEpgGridWidget *mmyth_epg_grid_widget)

   430 {

   431 	EpgGridItem *epg_grid_item;

   432 	

   433   	/* deselect*/

   434     if(mmyth_epg_grid_widget->selected_grid_item != NULL) {

   435     	epg_grid_item = 

   436             (EpgGridItem*) mmyth_epg_grid_widget->selected_grid_item->data;

   437     	gtk_widget_set_state(GTK_WIDGET(epg_grid_item->event_box), GTK_STATE_NORMAL);

   438     }            

   439 }

   440 

   441 static void 

   442 mmyth_epg_grid_widget_clicked (GtkWidget* widget, 

   443                                GdkEventExpose *event, gpointer data)

   444 {           

   445     g_return_if_fail(data != NULL);

   446 

   447     GList *epg_grid_item_list = (GList *) data;

   448     EpgGridItem *epg_grid_item = (EpgGridItem *) epg_grid_item_list->data;

   449 

   450     /* update the selected service */

   451     mmyth_epg_grid_widget_update_service( epg_grid_item->object, (GList*) data );       

   452 }

   453 

   454 void

   455 mmyth_epg_grid_widget_update_service(MMythEpgGridWidget * object,

   456                                      GList *selected_grid_list)

   457 {

   458     g_return_if_fail(object != NULL);

   459     g_return_if_fail(selected_grid_list != NULL);

   460 		

   461 	EpgGridItem *epg_grid_item = (EpgGridItem *) selected_grid_list->data;

   462 

   463     mmyth_epg_grid_widget_deselect_service(epg_grid_item->object);

   464 

   465     /* updating current selected schedule_item and schedule_list*/

   466     object->selected_grid_item = selected_grid_list;

   467     

   468     /* set state of the event box */

   469     gtk_widget_set_state(GTK_WIDGET(epg_grid_item->event_box), GTK_STATE_SELECTED);

   470     /* emit update signal for listeners */

   471     g_signal_emit(object, 

   472                   mmyth_epg_grid_widget_signals[SELECTION_UPDATED_SIGNAL],

   473                   0,

   474                   (gpointer) epg_grid_item);

   475 }

   476 

   477 static GtkWidget * 

   478 create_event_box_lbl(gchar *str, int width, const GdkColor *bg_color, 

   479                      const GdkColor *fg_color) 

   480 {

   481     GtkWidget *event_box = gtk_event_box_new();

   482 	GtkWidget *lbl = gtk_label_new(str);

   483     gtk_label_set_ellipsize(GTK_LABEL(lbl), PANGO_ELLIPSIZE_END);

   484 

   485     gtk_widget_modify_bg(event_box, GTK_STATE_NORMAL, bg_color);    

   486     gtk_widget_modify_fg(lbl, GTK_STATE_NORMAL, fg_color);    

   487     

   488     /* selected colors are const*/

   489     GdkColor selected_bg_color;

   490     selected_bg_color.red = 100;

   491     selected_bg_color.green = 40000;

   492     selected_bg_color.blue = 100;        

   493 

   494     GdkColor selected_fg_color;

   495     selected_fg_color.red = 100;

   496     selected_fg_color.green = 100;

   497     selected_fg_color.blue = 100;        

   498             

   499     gtk_widget_modify_bg(event_box, GTK_STATE_SELECTED, &selected_bg_color);    

   500     gtk_widget_modify_fg(lbl, GTK_STATE_SELECTED, &selected_fg_color);    

   501     

   502     gtk_misc_set_alignment (GTK_MISC(lbl), 0.0, 0.5);    

   503 	gtk_container_add (GTK_CONTAINER (event_box),

   504                        lbl);

   505 	gtk_widget_set_size_request(event_box, width, -1);

   506 	                       

   507     return event_box;

   508 }

   509 

   510 /******************************************************************************

   511  *                            METHODS                                         *

   512  *****************************************************************************/

   513 

   514 /* Callback for hardware keys */

   515 gboolean

   516 mmyth_epg_grid_widget_key_press (MMythEpgGridWidget * object, 

   517                                  GtkWidget * widget, GdkEventKey * event)

   518 {

   519     MMythEpgGridWidgetPrivate *private = 

   520         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(object);

   521   

   522     EpgGridItem *epg_grid_item;

   523     GList *tmp;

   524     

   525     /* List of selected_grid_item */

   526     GList *selected_view_model;

   527     

   528     gint channel_index;

   529     

   530 	if(object->selected_grid_item == NULL) {

   531         g_warning ("No program selected");

   532 	    return FALSE;

   533 	} 

   534     

   535     epg_grid_item = (EpgGridItem*) object->selected_grid_item->data;    

   536     

   537     channel_index = private->selected_channel_index;

   538     

   539     switch (event->keyval) {

   540         case GDK_Up:        

   541             selected_view_model = g_list_nth( object->epg_view_model, channel_index - 1 );

   542             if(selected_view_model != NULL) {

   543                 private->selected_channel_index = channel_index - 1;

   544    	            tmp = (GList *) selected_view_model->data;               

   545                 /* TODO: select a better centralized item 

   546                    currently is picking the 1st or last item */

   547                 if(g_list_next(object->selected_grid_item) == NULL &&

   548                    g_list_previous(object->selected_grid_item) != NULL) {

   549                     /* in this case the new selected will be the last */ 

   550                     tmp = g_list_last(tmp);

   551                 }

   552 

   553 	            /* update the selected service */

   554                 mmyth_epg_grid_widget_update_service( object, tmp );

   555             }    

   556         return TRUE;         

   557         case GDK_Down:

   558             selected_view_model = g_list_nth( object->epg_view_model, channel_index + 1 );            

   559             if(selected_view_model != NULL) {   	            

   560                 private->selected_channel_index = channel_index + 1;

   561    	            tmp = (GList *) selected_view_model->data;

   562                 /* TODO: select a better centralized item 

   563                    currently is picking the 1st or last item */

   564                 if(g_list_next(object->selected_grid_item) == NULL &&

   565                    g_list_previous(object->selected_grid_item) != NULL) {

   566                     /* in this case the new selected will be the last */ 

   567                     tmp = g_list_last(tmp);

   568                 }

   569 

   570 	            /* update the selected service */

   571                 mmyth_epg_grid_widget_update_service( object, tmp );

   572             }

   573         return TRUE;        

   574         case GDK_Left:    

   575             tmp = g_list_previous( object->selected_grid_item );

   576             if(tmp != NULL) {

   577 	            /* update the selected service */

   578                 mmyth_epg_grid_widget_update_service( object, tmp );

   579             }

   580         return TRUE;        

   581         case GDK_Right:

   582             tmp = g_list_next( object->selected_grid_item );

   583             if(tmp != NULL) {

   584 	            /* update the selected service */

   585                 mmyth_epg_grid_widget_update_service( object, tmp );

   586             }

   587         return TRUE;        

   588 	    default:

   589 	    return TRUE;

   590     }

   591     

   592     return FALSE;

   593 }

   594 

   595 static void 

   596 mmyth_epg_grid_widget_fill_programinfos (MMythEpgGridWidgetPrivate *private)

   597 {

   598     GList *channels_list = NULL;

   599     int y;

   600 

   601     if ((private->mmyth_epg != NULL) &&

   602 	   	(gmyth_epg_get_channel_list (private->mmyth_epg, &channels_list) < 0 )) {

   603 			private->channel_list = NULL;

   604 			return;

   605     }

   606     

   607     private->channel_list = channels_list;

   608     

   609     for (y = 0; y < private->DISPLAY_CHANS && channels_list; y++) {

   610         GMythChannelInfo *channel_info = (GMythChannelInfo *) channels_list->data;

   611 

   612         mmyth_epg_grid_widget_fill_program_row_infos(

   613                             private, channel_info->channel_ID, y);

   614 

   615         channels_list = g_list_next (channels_list);

   616     }

   617 }

   618 

   619 static void 

   620 mmyth_epg_grid_widget_fill_program_row_infos(MMythEpgGridWidgetPrivate *private,

   621                                              guint chanNum, guint row)

   622 {    

   623     gint res =  gmyth_epg_get_program_list (private->mmyth_epg,

   624     					&(private->program_list[row]),

   625                         chanNum, private->current_start_time, 

   626                         private->current_end_time);

   627                         

   628     if (res < 0) {

   629     	g_warning ("[%s] Error while retrieving epg programs", __FUNCTION__);

   630     }

   631 }

   632
gmyth