added localization for month and weekday to calendar-widget

i18n/en/libcosmic.ftl

@@ -9,3 +9,24 @@ designers = Designers
 artists = Artists
 translators = Translators
 documenters = Documenters
+
+# Calendar
+january = January { $year }
+february = February { $year }
+march = March { $year }
+april = April { $year }
+may = May { $year }
+june = June { $year }
+july = July { $year }
+august = August { $year }
+september = September { $year }
+october = October { $year }
+november = November { $year }
+december = December { $year }
+monday = Mon
+tuesday = Tue
+wednesday = Wed
+thursday = Thu
+friday = Fri
+saturday = Sat
+sunday = Sun

src/widget/calendar.rs

@@ -8,7 +8,8 @@ use std::cmp;
 use crate::iced_core::{Alignment, Length, Padding};
 use crate::widget::{Grid, button, column, grid, icon, row, text};
 use apply::Apply;
-use chrono::{Datelike, Days, Local, Months, NaiveDate, Weekday};
+use chrono::{Datelike, Days, Local, Month, Months, NaiveDate, Weekday};
+use crate::fl;
 
 /// A widget that displays an interactive calendar.
 pub fn calendar<M>(
@@ -129,7 +130,42 @@ where
                 icon.padding([0, 12]).on_press($on_press)
             }};
         }
-        let date = text(this.model.visible.format("%B %Y").to_string()).size(18);
+        macro_rules! translate_month {
+            ($month:expr, $year:expr) => {{
+                match $month {
+                    chrono::Month::January => fl!("january", year=$year),
+                    chrono::Month::February => fl!("february", year=$year),
+                    chrono::Month::March => fl!("march", year=$year),
+                    chrono::Month::April => fl!("april", year=$year),
+                    chrono::Month::May => fl!("may", year=$year),
+                    chrono::Month::June => fl!("june", year=$year),
+                    chrono::Month::July => fl!("july", year=$year),
+                    chrono::Month::August => fl!("august", year=$year),
+                    chrono::Month::September => fl!("september", year=$year),
+                    chrono::Month::October => fl!("october", year=$year),
+                    chrono::Month::November => fl!("november", year=$year),
+                    chrono::Month::December => fl!("december", year=$year)
+                }
+            }}
+        }
+        macro_rules! translate_weekday {
+            ($weekday:expr) => {{
+                match $weekday {
+                    Weekday::Mon => fl!("monday"),
+                    Weekday::Tue => fl!("tuesday"),
+                    Weekday::Wed => fl!("wednesday"),
+                    Weekday::Thu => fl!("thursday"),
+                    Weekday::Fri => fl!("friday"),
+                    Weekday::Sat => fl!("saturday"),
+                    Weekday::Sun => fl!("sunday")
+                }
+            }}
+        }
+
+        let date = text(translate_month!(
+            Month::try_from(this.model.visible.month() as u8)
+                .expect("Previously valid month is suddenly invalid"),
+            this.model.visible.year())).size(18);
 
         let month_controls = row::with_capacity(2)
             .push(icon!("go-previous-symbolic", (this.on_prev)()))
@@ -142,7 +178,7 @@ where
         let mut first_day_of_week = this.first_day_of_week;
         for _ in 0..7 {
             calendar_grid = calendar_grid.push(
-                text(first_day_of_week.to_string())
+                text(translate_weekday!(first_day_of_week))
                     .size(12)
                     .width(Length::Fixed(36.0))
                     .align_x(Alignment::Center),