right to left text on calendar events

daemon.py

@@ -18296,6 +18296,13 @@ class PubServer(BaseHTTPRequestHandler):
                 if self.server.key_shortcuts.get(nickname):
                     access_keys = self.server.key_shortcuts[nickname]
 
+                languages_understood = \
+                    get_understood_languages(self.server.base_dir,
+                                             self.server.http_prefix,
+                                             nickname,
+                                             self.server.domain_full,
+                                             self.server.person_cache)
+
                 # show the calendar screen
                 msg = html_calendar(self.server.person_cache,
                                     self.server.translate,
@@ -18306,7 +18313,8 @@ class PubServer(BaseHTTPRequestHandler):
                                     access_keys,
                                     False, self.server.system_language,
                                     self.server.default_timeline,
-                                    self.server.theme_name)
+                                    self.server.theme_name,
+                                    languages_understood)
                 if msg:
                     msg = msg.encode('utf-8')
                     msglen = len(msg)
@@ -18338,6 +18346,13 @@ class PubServer(BaseHTTPRequestHandler):
                 if self.server.key_shortcuts.get(nickname):
                     access_keys = self.server.key_shortcuts[nickname]
 
+                languages_understood = \
+                    get_understood_languages(self.server.base_dir,
+                                             self.server.http_prefix,
+                                             nickname,
+                                             self.server.domain_full,
+                                             self.server.person_cache)
+
                 # show the calendar screen
                 msg = html_calendar(self.server.person_cache,
                                     self.server.translate,
@@ -18349,7 +18364,8 @@ class PubServer(BaseHTTPRequestHandler):
                                     True,
                                     self.server.system_language,
                                     self.server.default_timeline,
-                                    self.server.theme_name)
+                                    self.server.theme_name,
+                                    languages_understood)
                 if msg:
                     msg = msg.encode('utf-8')
                     msglen = len(msg)

epicyon-calendar.css

@@ -172,13 +172,34 @@ a:focus {
     font-size: 28px;
     position: relative;
     padding: 20px;
+    direction: ltr;
 }
+
+.calendar__day__event__rtl {
+    color: var(--event-color);
+    background-color: var(--event-background-private);
+    float: left;
+    font-size: 28px;
+    position: relative;
+    padding: 20px;
+    direction: rtl;
+}
+
 .calendar__day__event__public {
     color: var(--event-public-color);
     float: left;
     font-size: 28px;
     position: relative;
     padding: 20px;
+    direction: ltr;
+}
+.calendar__day__event__public__rtl {
+    color: var(--event-public-color);
+    float: left;
+    font-size: 28px;
+    position: relative;
+    padding: 20px;
+    direction: rtl;
 }
 .place {
     color: var(--place-color);

webapp_calendar.py

@@ -22,10 +22,12 @@ from utils import remove_domain_port
 from utils import acct_dir
 from utils import local_actor_url
 from utils import replace_users_with_at
+from utils import get_language_from_post
 from happening import get_todays_events
 from happening import get_calendar_events
 from happening import get_todays_events_icalendar
 from happening import get_month_events_icalendar
+from webapp_utils import language_right_to_left
 from webapp_utils import get_banner_file
 from webapp_utils import set_custom_background
 from webapp_utils import html_header_with_external_style
@@ -108,7 +110,9 @@ def _html_calendar_day(person_cache: {}, translate: {},
                        year: int, month_number: int, day_number: int,
                        nickname: str, domain: str, day_events: [],
                        month_name: str, actor: str,
-                       theme: str, access_keys: {}) -> str:
+                       theme: str, access_keys: {},
+                       system_language: str,
+                       languages_understood: []) -> str:
     """Show a day within the calendar
     """
     account_dir = acct_dir(base_dir, nickname, domain)
@@ -250,10 +254,19 @@ def _html_calendar_day(person_cache: {}, translate: {},
                     translate['Delete this event'] + '" src="/' + \
                     'icons/delete.png" /></a></td>\n'
 
+            content_language = \
+                get_language_from_post(event_post, system_language,
+                                       languages_understood)
+            is_rtl = language_right_to_left(content_language)
+
             event_class = 'calendar__day__event'
+            if is_rtl:
+                event_class = 'calendar__day__event__rtl'
             cal_item_class = 'calItem'
             if event_is_public:
                 event_class = 'calendar__day__event__public'
+                if is_rtl:
+                    event_class = 'calendar__day__event__public__trl'
                 cal_item_class = 'calItemPublic'
             if event_time:
                 if event_end_time:
@@ -322,7 +335,8 @@ def html_calendar(person_cache: {}, translate: {},
                   http_prefix: str, domain_full: str,
                   text_mode_banner: str, access_keys: {},
                   icalendar: bool, system_language: str,
-                  default_timeline: str, theme: str) -> str:
+                  default_timeline: str, theme: str,
+                  languages_understood: []) -> str:
     """Show the calendar for a person
     """
     domain = remove_domain_port(domain_full)
@@ -401,7 +415,8 @@ def html_calendar(person_cache: {}, translate: {},
                                   year, month_number, day_number,
                                   nickname, domain, day_events,
                                   month_name, actor,
-                                  theme, access_keys)
+                                  theme, access_keys,
+                                  system_language, languages_understood)
 
     if icalendar:
         return get_month_events_icalendar(base_dir, nickname, domain,