Remake the sleep timer menu item, so that selecting it while the timer is running

just cancels that one (displayed text is changed accordingly and
displays te remaining time).
Selecting it again allows to set a new time.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30778 a1c6a512-1295-4272-9138-f99709370657

apps/lang/english.lang

@@ -12863,7 +12863,7 @@
 </phrase>
 <phrase>
   id: LANG_SLEEP_TIMER_DURATION
-  desc: default sleep timer duration in minutes
+  desc: default sleep timer duration in minutes (unused in UI)
   user: core
   <source>
     *: "Default Sleep Timer Duration"
@@ -12889,3 +12889,17 @@
     *: "Start Sleep Timer On Boot"
   </voice>
 </phrase>
+<phrase>
+  id: LANG_SLEEP_TIMER_CANCEL_CURRENT
+  desc: shown instead of sleep timer when it's running
+  user: core
+  <source>
+    *: "Cancel Sleep Timer"
+  </source>
+  <dest>
+    *: "Cancel Sleep Timer"
+  </dest>
+  <voice>
+    *: "Cancel Sleep Timer"
+  </voice>
+</phrase>

apps/menu.h

@@ -198,7 +198,7 @@ int do_menu(const struct menu_item_ex *menu, int *start_selected,
     static const struct menu_get_name_and_icon name##_                      \
         = {callback,text_callback,voice_callback,text_cb_data,icon};        \
     static const struct menu_func name##__ = {{(void*)func}, param};           \
-    static const struct menu_item_ex name   =                                  \
+    const struct menu_item_ex name   =                                  \
         { MT_FUNCTION_CALL|MENU_DYNAMIC_DESC|flags,                            \
          { .function = & name##__}, {.menu_get_name_and_icon = & name##_}};
 

apps/menus/main_menu.c

@@ -419,21 +419,71 @@ static void sleep_timer_set(int minutes)
 
 static int sleep_timer(void)
 {
-    int minutes = get_sleep_timer() ? 0 : global_settings.sleeptimer_duration;
+    int minutes = global_settings.sleeptimer_duration;
-    return (int)set_int(str(LANG_SLEEP_TIMER), "", UNIT_MIN, &minutes,
+    if (get_sleep_timer())
+        sleep_timer_set(0);
+    else
+        set_int(str(LANG_SLEEP_TIMER), "", UNIT_MIN, &minutes,
                    &sleep_timer_set, 5, 0, 300, sleep_timer_formatter); 
+    return 0;
 }
 
+static int seconds_to_min(int secs)
+{
+    int min = secs / 60;
+    if ((secs % 60) > 50) /* round up for 50+ seconds */
+        min++;
+
+    return min;
+}
+
+static char* sleep_timer_getname(int selected_item, void * data, char *buffer)
+{
+    (void)selected_item;
+    (void)data;
+    (void)buffer;
+    int sec = get_sleep_timer();
+    char timer_buf[10];
+    /* we have no sprintf, so MAX_PATH is a guess */
+    if (sec > 0)
+    {   /* show cancel and countdown if running */
+        snprintf(buffer, MAX_PATH, "%s (%s)", str(LANG_SLEEP_TIMER_CANCEL_CURRENT),
+                sleep_timer_formatter(timer_buf, sizeof(timer_buf), seconds_to_min(sec), NULL));
+    }
+    else
+        snprintf(buffer, MAX_PATH, "%s", str(LANG_SLEEP_TIMER));
+
+    return buffer;
+}
+
+static int sleep_timer_voice(int selected_item, void*data)
+{
+    (void)selected_item;
+    (void)data;
+    int seconds = get_sleep_timer();
+    if (seconds > 0)
+    {
+        long talk_ids[] = {
+            LANG_SLEEP_TIMER_CANCEL_CURRENT,
+            VOICE_PAUSE,
+            seconds_to_min(seconds) | UNIT_MIN << UNIT_SHIFT,
+            TALK_FINAL_ID
+        };
+        talk_idarray(talk_ids, true);
+    }
+    else
+        talk_id(LANG_SLEEP_TIMER, true);
+    return 0;
+}
 
 #if CONFIG_RTC
 int time_screen(void* ignored);
 MENUITEM_FUNCTION(timedate_item, MENU_FUNC_CHECK_RETVAL, ID2P(LANG_TIME_MENU),
                     time_screen, NULL,  NULL, Icon_Menu_setting );
 #endif
-/* Sleep timer items are in the time/date screen if there is a RTC */
+MENUITEM_FUNCTION_DYNTEXT(sleep_timer_call, 0, sleep_timer, NULL, sleep_timer_getname,
-MENUITEM_FUNCTION(sleep_timer_call, 0, ID2P(LANG_SLEEP_TIMER), sleep_timer,
+                          sleep_timer_voice, NULL, NULL, Icon_Menu_setting);
-                    NULL, NULL, Icon_Menu_setting); /* make it look like a 
+                           /* make it look like a setting to the user */
-                                                       setting to the user */
 #if CONFIG_RTC == 0
 MENUITEM_SETTING(sleeptimer_on_startup,
                  &global_settings.sleeptimer_on_startup, NULL);