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maemo-ui/src/mmyth_epg_grid_widget.c
author rosfran
Wed Dec 20 18:54:31 2006 +0000 (2006-12-20)
branchtrunk
changeset 236 d7fb0e36deff
parent 20 7174e23f7617
child 244 c88244670b08
permissions -rw-r--r--
[svn r237] Added channel info. 
     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_util.h" 

     9 #include "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     time_t current_start_time;

    31     time_t 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                                                        int start_time, int 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 = time(&cur_time);

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

   106     

   107     private->DISPLAY_CHANS = MAX_DISPLAY_CHANS;

   108 

   109     private->backend_info = gmyth_backend_info_new_full ( "192.168.1.109", "mythtv",

   110     	"mythtv", "mythconverg", 6543 );

   111 

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

   113     private->mmyth_epg = gmyth_epg_new ();

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

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

   116     	g_object_unref (private->mmyth_epg);

   117     	private->mmyth_epg = NULL;

   118     }

   119 }

   120 

   121 static void

   122 mmyth_epg_grid_widget_init (MMythEpgGridWidget *mmyth_epg_grid_widget)

   123 {

   124     MMythEpgGridWidgetPrivate *private = 

   125         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   126     

   127     /* init private fields */

   128     mmyth_epg_grid_widget_private_init(private);

   129 

   130     mmyth_epg_grid_widget->epg_view_model      = NULL;

   131     mmyth_epg_grid_widget->selected_grid_item  = NULL;

   132 

   133     GtkWidget *epg_event_box = GTK_WIDGET(mmyth_epg_grid_widget);

   134     gtk_widget_modify_bg(epg_event_box, GTK_STATE_NORMAL, &main_bg_color);

   135     gtk_widget_set_size_request (epg_event_box, 0, 125);

   136     

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

   138     gtk_container_set_border_width(GTK_CONTAINER (epg_main_hbox), 10);

   139     

   140     gtk_container_add (GTK_CONTAINER (epg_event_box),

   141                        epg_main_hbox);

   142 		        

   143     /* channels vbox */

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

   145     private->epg_channels_vbox = epg_channels_vbox; 

   146 

   147     /* programs vbox */

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

   149     private->epg_programs_vbox = epg_programs_vbox;

   150     

   151     /* packing start */

   152     gtk_box_pack_start (GTK_BOX (epg_main_hbox),

   153 	                epg_channels_vbox, FALSE, FALSE, 0);

   154     gtk_box_pack_start (GTK_BOX (epg_main_hbox),

   155                         epg_programs_vbox, FALSE, FALSE, 0);

   156 

   157     /* table header (first line) */  

   158     mmyth_epg_grid_widget_mount_header(mmyth_epg_grid_widget);                 

   159     

   160     /* service programs */ 

   161     /* mount service programs with current time */

   162     mmyth_epg_grid_widget_mount_services(mmyth_epg_grid_widget, 

   163                                          private->current_start_time,

   164                                          private->current_end_time);                                           

   165 }

   166 

   167 GtkWidget*

   168 mmyth_epg_grid_widget_new ()

   169 {

   170   return GTK_WIDGET ( gtk_type_new (mmyth_epg_grid_widget_get_type ()));

   171 }

   172 

   173 static void

   174 mmyth_epg_grid_widget_mount_services(MMythEpgGridWidget *mmyth_epg_grid_widget, 

   175                                      int start_time, int end_time)

   176 {

   177     GList *proglist;

   178     GList *channel_list = NULL;

   179     GMythChannelInfo *channel_info;

   180 

   181     int chanid;

   182     MMythEpgGridWidgetPrivate *private = 

   183         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   184 	

   185 	// update view_model

   186 	/* FIXME shallow free or recursive? */

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

   188 		g_list_free(mmyth_epg_grid_widget->epg_view_model);

   189 		mmyth_epg_grid_widget->epg_view_model = NULL;

   190 	}

   191 	

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

   193 		g_hash_table_destroy(private->service_model_hash);

   194 	}

   195 

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

   197 

   198     /* fill program infos from db */

   199     mmyth_epg_grid_widget_fill_programinfos(private);

   200     

   201     channel_list = private->channel_list;

   202  

   203     /* for each channel get_programs() */

   204     for (chanid=0; channel_list &&

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

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

   207     

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

   209         channel_list = g_list_next(channel_list);        

   210 

   211         /* Service Title*/

   212         GString *name = NULL;

   213         if (channel_info->channel_name)

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

   215 		

   216 		GdkColor title_bg_color;

   217 		title_bg_color.red = 5000;

   218 		title_bg_color.green = 9000;

   219 		title_bg_color.blue = 40000;        

   220 		

   221 		GdkColor title_fg_color;

   222 		title_fg_color.red = 60000;

   223 		title_fg_color.green = 60000;

   224 		title_fg_color.blue = 60000;        

   225 		

   226 		GtkWidget *event_box_channel = create_event_box_lbl(

   227                                                         name->str, 90, 

   228 									                    &title_bg_color, 

   229 									                    &title_fg_color);

   230 

   231         gtk_box_pack_start (GTK_BOX (private->epg_channels_vbox),

   232 		                    event_box_channel, FALSE, FALSE, 0);

   233 

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

   235 

   236 	    GdkColor bg_color;

   237 	    bg_color.red = 5000;

   238 	    bg_color.green = 30000;

   239 	    bg_color.blue = 60000;        

   240 	

   241 	    GdkColor fg_color;

   242 	    fg_color.red = 60000;

   243 	    fg_color.green = 60000;

   244 	    fg_color.blue = 60000;        

   245 		

   246 		/* Content parsing */

   247         GList *epg_grid_list = NULL;

   248 

   249         GMythProgramInfo *proginfo;

   250         int pixel_count = 0;

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

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

   253             

   254             GString *content_name = proginfo->title;

   255                     

   256        	    int initial_time, last_time, duration;

   257 

   258             int schedule_start_time = proginfo->startts;

   259             int schedule_end_time   = proginfo->endts;

   260 

   261 	        initial_time = 

   262                 (schedule_start_time < start_time) ? start_time : schedule_start_time;

   263             last_time = (schedule_end_time > end_time) ? end_time : schedule_end_time;

   264 	        duration = last_time - initial_time;

   265 		    

   266             // Verify program time 

   267             #if 0

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

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

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

   271                 

   272                 struct tm loctime;

   273     

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

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

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

   277                     return NULL;

   278                 }            

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

   280                 

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

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

   283                     return NULL;

   284                 } 

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

   286             #endif

   287     		

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

   289     	    double duration_hour = duration / (double) 3600.0;

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

   291     		

   292             int size = PIXELS_HOUR * duration_hour;

   293                 

   294             /* complete hour */

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

   296             if(last_time%3600 != 0) {

   297                 size -= PROGRAM_SEPARATION;                

   298             }

   299             if(initial_time%3600 != 0) {

   300                 size -= PROGRAM_SEPARATION;                

   301             }

   302 

   303             pixel_count += size + PROGRAM_SEPARATION;

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

   305 							  size, &bg_color, 

   306 							  &fg_color);

   307 							  gtk_widget_add_events(event_box, 

   308 							  GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

   309             

   310             /* create EpgGridItem */

   311             EpgGridItem *epg_grid_item = g_new(EpgGridItem, 1);

   312             epg_grid_item->proginfo  = proginfo;

   313             epg_grid_item->event_box = event_box;

   314             epg_grid_item->object    = mmyth_epg_grid_widget;

   315             

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

   317 

   318      	    gtk_box_pack_start (GTK_BOX (epg_line_hbox),

   319 	                            event_box, FALSE, FALSE, PROGRAM_SEPARATION);

   320 	                                 

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

   322 		                      G_CALLBACK (mmyth_epg_grid_widget_clicked), 

   323                               (gpointer*) epg_grid_list);

   324         }

   325 #if 0

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

   327 #endif        

   328 

   329         if(!epg_grid_list) {

   330             /* No programs for current channel */

   331             /* FIXME: size HARDCODED */

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

   333                               PIXELS_HOUR * 3, &bg_color,

   334                               &fg_color);

   335                               gtk_widget_add_events(event_box,

   336                               GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

   337 

   338             /* create EpgGridItem */

   339             EpgGridItem *epg_grid_item = g_new(EpgGridItem, 1);

   340             epg_grid_item->proginfo  = NULL;

   341             epg_grid_item->event_box = event_box;

   342             epg_grid_item->object    = mmyth_epg_grid_widget;

   343 

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

   345             

   346             gtk_box_pack_start (GTK_BOX (epg_line_hbox),

   347 	                            event_box, FALSE, FALSE, PROGRAM_SEPARATION);            	

   348 	                                 

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

   350 		                      G_CALLBACK (mmyth_epg_grid_widget_clicked),

   351                               (gpointer*) epg_grid_list);

   352         }

   353 

   354         epg_grid_list = g_list_reverse(epg_grid_list);

   355         mmyth_epg_grid_widget->epg_view_model = 

   356               g_list_append(mmyth_epg_grid_widget->epg_view_model, epg_grid_list);

   357         

   358 	    gtk_box_pack_start (GTK_BOX (private->epg_programs_vbox),

   359 	                        epg_line_hbox, FALSE, FALSE,  0);                    		    		

   360     }

   361 }

   362 

   363 static void

   364 mmyth_epg_grid_widget_mount_header(MMythEpgGridWidget *mmyth_epg_grid_widget)

   365 {	          	    

   366     MMythEpgGridWidgetPrivate *private = 

   367         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(mmyth_epg_grid_widget);

   368     

   369     struct tm hour_tm;

   370     const gchar name_title[] = "Today";    

   371     GtkWidget * lbl_title = gtk_label_new(name_title);

   372 

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

   374     

   375     gtk_box_pack_start (GTK_BOX (private->epg_channels_vbox),

   376                         lbl_title, FALSE, FALSE, 0);

   377 

   378 	/* hours title line */

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

   380 

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

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

   383         return NULL;

   384     }    

   385 

   386     if (hour_tm.tm_min>30) {

   387         hour_tm.tm_min = 30;

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

   389         hour_tm.tm_min = 0;

   390     }

   391         

   392     gchar hour1_str[10];

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

   394     GtkWidget * lbl_hour1 = gtk_label_new(hour1_str);

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

   396 	

   397     hour_tm.tm_hour++;

   398     gchar hour2_str[10];    

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

   400     GtkWidget * lbl_hour2 = gtk_label_new(hour2_str);

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

   402 

   403     hour_tm.tm_hour++;

   404 	gchar hour3_str[10];    

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

   406     GtkWidget * lbl_hour3 = gtk_label_new(hour3_str);

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

   408     

   409     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   410                         lbl_hour1, TRUE, TRUE, 0);                    

   411     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   412                         lbl_hour2, TRUE, TRUE, 0);                    

   413     gtk_box_pack_start (GTK_BOX (epg_programs_hours_hbox),

   414                         lbl_hour3, TRUE, TRUE, 0); 

   415  

   416     gtk_box_pack_start (GTK_BOX (private->epg_programs_vbox),

   417                         epg_programs_hours_hbox, FALSE, FALSE, 0);                        

   418 }

   419 

   420 /******************************************************************************

   421  *              INTERNAL CALLBACKS FOR STATE CHANGE                           *

   422  *****************************************************************************/

   423 static void 

   424 mmyth_epg_grid_widget_deselect_service(MMythEpgGridWidget *mmyth_epg_grid_widget)

   425 {

   426 	EpgGridItem *epg_grid_item;

   427 	

   428   	/* deselect*/

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

   430     	epg_grid_item = 

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

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

   433     }            

   434 }

   435 

   436 static void 

   437 mmyth_epg_grid_widget_clicked (GtkWidget* widget, 

   438                                GdkEventExpose *event, gpointer data)

   439 {           

   440     g_return_if_fail(data != NULL);

   441 

   442     GList *epg_grid_item_list = (GList *) data;

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

   444 

   445     /* update the selected service */

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

   447 }

   448 

   449 void

   450 mmyth_epg_grid_widget_update_service(MMythEpgGridWidget * object,

   451                                      GList *selected_grid_list)

   452 {

   453     g_return_if_fail(object != NULL);

   454     g_return_if_fail(selected_grid_list != NULL);

   455 		

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

   457 

   458     mmyth_epg_grid_widget_deselect_service(epg_grid_item->object);

   459 

   460     /* updating current selected schedule_item and schedule_list*/

   461     object->selected_grid_item = selected_grid_list;

   462     

   463     /* set state of the event box */

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

   465     /* emit update signal for listeners */

   466     g_signal_emit(object, 

   467                   mmyth_epg_grid_widget_signals[SELECTION_UPDATED_SIGNAL],

   468                   0,

   469                   (gpointer) epg_grid_item);

   470 }

   471 

   472 static GtkWidget * 

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

   474                      const GdkColor *fg_color) 

   475 {

   476     GtkWidget *event_box = gtk_event_box_new();

   477 	GtkWidget *lbl = gtk_label_new(str);

   478     gtk_label_set_ellipsize(GTK_LABEL(lbl), PANGO_ELLIPSIZE_END);

   479 

   480     gtk_widget_modify_bg(event_box, GTK_STATE_NORMAL, bg_color);    

   481     gtk_widget_modify_fg(lbl, GTK_STATE_NORMAL, fg_color);    

   482     

   483     /* selected colors are const*/

   484     GdkColor selected_bg_color;

   485     selected_bg_color.red = 100;

   486     selected_bg_color.green = 40000;

   487     selected_bg_color.blue = 100;        

   488 

   489     GdkColor selected_fg_color;

   490     selected_fg_color.red = 100;

   491     selected_fg_color.green = 100;

   492     selected_fg_color.blue = 100;        

   493             

   494     gtk_widget_modify_bg(event_box, GTK_STATE_SELECTED, &selected_bg_color);    

   495     gtk_widget_modify_fg(lbl, GTK_STATE_SELECTED, &selected_fg_color);    

   496     

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

   498 	gtk_container_add (GTK_CONTAINER (event_box),

   499                        lbl);

   500 	gtk_widget_set_size_request(event_box, width, -1);

   501 	                       

   502     return event_box;

   503 }

   504 

   505 /******************************************************************************

   506  *                            METHODS                                         *

   507  *****************************************************************************/

   508 

   509 /* Callback for hardware keys */

   510 gboolean

   511 mmyth_epg_grid_widget_key_press (MMythEpgGridWidget * object, 

   512                                  GtkWidget * widget, GdkEventKey * event)

   513 {

   514     MMythEpgGridWidgetPrivate *private = 

   515         MMYTH_EPG_GRID_WIDGET_GET_PRIVATE(object);

   516   

   517     EpgGridItem *epg_grid_item;

   518     GList *tmp;

   519     

   520     /* List of selected_grid_item */

   521     GList *selected_view_model;

   522     

   523     gint channel_index;

   524     

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

   526         g_warning ("No program selected");

   527 	    return FALSE;

   528 	} 

   529     

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

   531     

   532     channel_index = private->selected_channel_index;

   533     

   534     switch (event->keyval) {

   535         case GDK_Up:        

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

   537             if(selected_view_model != NULL) {

   538                 private->selected_channel_index = channel_index - 1;

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

   540                 /* TODO: select a better centralized item 

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

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

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

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

   545                     tmp = g_list_last(tmp);

   546                 }

   547 

   548 	            /* update the selected service */

   549                 mmyth_epg_grid_widget_update_service( object, tmp );

   550             }    

   551         return TRUE;         

   552         case GDK_Down:

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

   554             if(selected_view_model != NULL) {   	            

   555                 private->selected_channel_index = channel_index + 1;

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

   557                 /* TODO: select a better centralized item 

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

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

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

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

   562                     tmp = g_list_last(tmp);

   563                 }

   564 

   565 	            /* update the selected service */

   566                 mmyth_epg_grid_widget_update_service( object, tmp );

   567             }

   568         return TRUE;        

   569         case GDK_Left:    

   570             tmp = g_list_previous( object->selected_grid_item );

   571             if(tmp != NULL) {

   572 	            /* update the selected service */

   573                 mmyth_epg_grid_widget_update_service( object, tmp );

   574             }

   575         return TRUE;        

   576         case GDK_Right:

   577             tmp = g_list_next( object->selected_grid_item );

   578             if(tmp != NULL) {

   579 	            /* update the selected service */

   580                 mmyth_epg_grid_widget_update_service( object, tmp );

   581             }

   582         return TRUE;        

   583 	    default:

   584 	    return TRUE;

   585     }

   586     

   587     return FALSE;

   588 }

   589 

   590 static void 

   591 mmyth_epg_grid_widget_fill_programinfos (MMythEpgGridWidgetPrivate *private)

   592 {

   593     GList *channels_list = NULL;

   594     int y;

   595 

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

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

   598 			private->channel_list = NULL;

   599 			return;

   600     }

   601     

   602     private->channel_list = channels_list;

   603     

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

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

   606 

   607         mmyth_epg_grid_widget_fill_program_row_infos(

   608                             private, channel_info->channel_ID, y);

   609 

   610         channels_list = g_list_next (channels_list);

   611     }

   612 }

   613 

   614 static void 

   615 mmyth_epg_grid_widget_fill_program_row_infos(MMythEpgGridWidgetPrivate *private,

   616                                              guint chanNum, guint row)

   617 {    

   618     gint res =  gmyth_epg_get_program_list (private->mmyth_epg,

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

   620                         chanNum, private->current_start_time, 

   621                         private->current_end_time);

   622                         

   623     if (res < 0) {

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

   625     }

   626 }

   627
gmyth