Super repetitions optimization

src/repetitions.rs

@@ -14,10 +14,7 @@ use iced::widget::button::{danger, Status};
 pub use iced::widget::button::{Catalog, Style};
 use iced::widget::container::bordered_box;
 use iced::widget::tooltip::Position::Top;
-use iced::widget::{
-    button, column, container, radio, row, scrollable, space, svg, text, text_input, tooltip, Column,
-    Row,
-};
+use iced::widget::{button, column, container, lazy, radio, row, scrollable, space, svg, text, text_input, tooltip, Column, Row};
 use iced::{Background, Border, Center, Color, Element, Fill, Length, Shadow, Task, Theme};
 use iced_core::border::Radius;
 use iced_core::svg::Handle;
@@ -267,14 +264,15 @@ impl RepetitionsState {
             .spacing(DEFAULT_SPACING)
             .into()
     }
-
     fn activity_bar(&self, set: &CardSetSettings) -> Element<'_, RepetitionsMessage> {
+        const MAX_DAY_COUNT: f32 = 128.0;
+
         let state = self.state.lock().unwrap();
         let history = state.activity.get(&set.id);
         let mut counts: Vec<u32> = vec![0; 30 * 7];
-
         let now = Local::now().date_naive();
 
+
         if let Some(history) = history {
             for (date, activity) in history {
                 let distance = now - *date;
@@ -291,6 +289,7 @@ impl RepetitionsState {
             }
         }
 
+        lazy((counts, now), |(counts, now)| {
             let mut row = Row::new()
                 .padding(Padding {
                     top: 0.0,
@@ -300,14 +299,13 @@ impl RepetitionsState {
                 })
                 .spacing(QUARTER_SPACING);
 
-        const MAX_DAY_COUNT: f32 = 128.0;
 
             let mut iter = counts.into_iter();
             for i in 0..30 {
                 let mut column = Column::new().spacing(QUARTER_SPACING);
 
                 for j in 0..7 {
-                let value = iter.next().unwrap() as f32;
+                    let value = *iter.next().unwrap() as f32;
                     let k = (value / MAX_DAY_COUNT).min(1.0) * 0.9 + 0.1;
 
                     let date = now.clone().checked_sub_days(Days::new(30 * 7 - i * 7 - j - 1)).unwrap();
@@ -333,7 +331,9 @@ impl RepetitionsState {
 
                 row = row.push(column);
             }
-        scrollable(column!["Карта активности", row].spacing(QUARTER_SPACING).align_x(Center)).into()
+            scrollable(column!["Карта активности", row].spacing(QUARTER_SPACING).align_x(Center))
+        }).into()
+
     }
 
     fn words_words_view(&self, set: &CardSetSettings) -> Element<'_, RepetitionsMessage> {