commit 1b5c4c179586b74501466e3ee21dd8d7171da691
Author: Ilya <crolsi@factry.io>
Date:   Tue Mar 29 23:16:37 2022 +0200

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..96ef6c0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..b983c3d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "embedded-components"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+embedded-graphics = "*"
+embedded-graphics-simulator = "*"
+chrono = "*"
+embedded-layout = "*"
+num-traits = "*"
diff --git a/examples/test.rs b/examples/test.rs
new file mode 100644
index 0000000..092c03a
--- /dev/null
+++ b/examples/test.rs
@@ -0,0 +1,106 @@
+use embedded_components::{Calendar, ComponentStyle, Gauge, ScrollingCalendar};
+use embedded_graphics::{
+  pixelcolor::{raw::RawU2, BinaryColor, Rgb888},
+  prelude::*,
+};
+use embedded_graphics_simulator::{
+  BinaryColorTheme, OutputSettingsBuilder, SimulatorDisplay, Window,
+};
+
+#[derive(Copy, Clone, PartialEq, Eq)]
+enum TriColor {
+  White,
+  Black,
+  Red,
+}
+
+impl PixelColor for TriColor {
+  type Raw = RawU2;
+}
+
+impl From<BinaryColor> for TriColor {
+  fn from(value: BinaryColor) -> TriColor {
+    match value {
+      BinaryColor::On => TriColor::Black,
+      BinaryColor::Off => TriColor::White,
+    }
+  }
+}
+
+impl Into<Rgb888> for TriColor {
+  fn into(self) -> Rgb888 {
+    match self {
+      TriColor::Black => Rgb888::new(0, 0, 0),
+      TriColor::White => Rgb888::new(255, 255, 255),
+      TriColor::Red => Rgb888::new(180, 0, 0),
+    }
+  }
+}
+
+impl From<Rgb888> for TriColor {
+  fn from(value: Rgb888) -> TriColor {
+    match value {
+      _ => TriColor::White,
+    }
+  }
+}
+
+fn main() -> Result<(), core::convert::Infallible> {
+  //let mut display = SimulatorDisplay::<BinaryColor>::new(Size::new(212, 104));
+  //let mut display = SimulatorDisplay::<BinaryColor>::new(Size::new(800, 480));
+  let mut display = SimulatorDisplay::<TriColor>::new(Size::new(800, 480));
+
+  let fg_color = TriColor::Black;
+  let bg_color = TriColor::White;
+  let hi_color = Some(TriColor::Red);
+
+  let gauge = Gauge {
+    top_left: Point::new(300, 300),
+    bezel: 1,
+    border: 1,
+    size: Size::new(200, 20),
+    ratio: 0.5,
+    fg_color,
+    bg_color,
+    text: "test test test test test",
+  };
+  gauge.draw(&mut display)?;
+
+  let calendar = Calendar {
+    top_left: Point::new(10, 10),
+    size: Size::new(196, 196),
+    border: 1,
+    fg_color,
+    bg_color,
+    hi_color,
+  };
+  calendar.draw(&mut display)?;
+
+  let calendar_style = ComponentStyle {
+    border: 1,
+    bezel: 1,
+    fg_color,
+    bg_color,
+    hi_color: TriColor::Red,
+  };
+
+  let calendar_week = ScrollingCalendar {
+    top_left: Point::new(400, 10),
+    size: Size::new(396, 396),
+    style: calendar_style,
+    day: chrono::Local::now()
+      .naive_local()
+      .date()
+      .checked_add_signed(chrono::Duration::days(28 * 4 * 0 - 14))
+      .unwrap(),
+    weeks: 5,
+  };
+  calendar_week.draw(&mut display)?;
+
+  let output_settings = OutputSettingsBuilder::new()
+    .theme(BinaryColorTheme::Default)
+    .build();
+  Window::new("Hello World", &output_settings).show_static(&display);
+
+  Ok(())
+}
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..b196eaa
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1 @@
+tab_spaces = 2
diff --git a/src/bullet_counter.rs b/src/bullet_counter.rs
new file mode 100644
index 0000000..2591744
--- /dev/null
+++ b/src/bullet_counter.rs
@@ -0,0 +1,27 @@
+use embedded_graphics::{
+  pixelcolor::{BinaryColor, PixelColor},
+  prelude::*,
+  primitives::{Circle, Rectangle},
+};
+use embedded_layout::prelude::*;
+
+pub struct BulletCounter<C> {
+  pub top_left: Point,
+  pub size: Size, // Available space
+  pub color: C,
+}
+
+impl<C> Drawable for BulletCounter<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    Ok(())
+  }
+}
diff --git a/src/calendar.rs b/src/calendar.rs
new file mode 100644
index 0000000..4e1a1a7
--- /dev/null
+++ b/src/calendar.rs
@@ -0,0 +1,386 @@
+use crate::ComponentStyle;
+
+use chrono::{Datelike, Month};
+use embedded_graphics::{
+  mono_font::{
+    ascii::{FONT_10X20, FONT_4X6, FONT_6X9, FONT_8X13},
+    MonoFont, MonoTextStyle,
+  },
+  pixelcolor::{BinaryColor, PixelColor},
+  prelude::*,
+  primitives::{Line, PrimitiveStyle, Rectangle},
+  text::Text,
+};
+use embedded_layout::prelude::*;
+use num_traits::cast::FromPrimitive;
+
+fn font(height: u32) -> MonoFont<'static> {
+  if height < 8 {
+    return FONT_4X6;
+  } else if height < 10 {
+    return FONT_6X9;
+  } else if height < 14 {
+    return FONT_8X13;
+  } else {
+    return FONT_10X20;
+  }
+}
+
+pub struct CalendarDay<C> {
+  pub top_left: Point,
+  pub size: Size,
+  pub fg_color: C,
+  pub bg_color: C,
+  pub border: u32,
+  pub day_of_month: u32,
+  pub has_event: bool,
+}
+
+impl<C> Drawable for CalendarDay<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    // Adding based on border so that the borders overlap
+    let date_rect = Rectangle::new(
+      self.top_left,
+      self.size + Size::new(self.border / 2 + 1, self.border / 2 + 1),
+    );
+    date_rect
+      .into_styled(PrimitiveStyle::with_fill(self.bg_color))
+      .draw(target)?;
+    date_rect
+      .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+      .draw(target)?;
+
+    let text = format!("{}", self.day_of_month);
+    let date_font = font(self.size.height / 2);
+    let text_style = MonoTextStyle::new(&date_font, self.fg_color);
+    Text::new(&text, self.top_left, text_style)
+      .align_to(&date_rect, horizontal::Center, vertical::Center)
+      .draw(target)?;
+
+    if self.has_event {
+      let event_padding: i32 = 2 + self.size.height as i32 / 10;
+      Line::new(
+        self.top_left + Point::new(event_padding, self.size.height as i32 - event_padding),
+        self.top_left
+          + Point::new(
+            self.size.width as i32 - event_padding,
+            self.size.height as i32 - event_padding,
+          ),
+      )
+      .into_styled(PrimitiveStyle::with_stroke(self.fg_color, 2))
+      .draw(target)?;
+    }
+
+    Ok(())
+  }
+}
+
+pub struct CalendarMonth<C> {
+  pub top_left: Point,
+  pub size: Size,
+  pub border: u32,
+  pub fg_color: C,
+  pub bg_color: C,
+  pub month: chrono::Month,
+}
+
+impl<C> Drawable for CalendarMonth<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let rect = Rectangle::new(
+      self.top_left,
+      self.size + Size::new(self.border / 2 + 1, self.border / 2 + 1),
+    );
+    rect
+      .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+      .draw(target)?;
+
+    let month_font = font((self.size.height as f32 * 0.8 - 2.) as u32);
+    let text_style = MonoTextStyle::new(&month_font, self.fg_color);
+    Text::new(self.month.name(), self.top_left, text_style)
+      .align_to(&rect, horizontal::Center, vertical::Center)
+      .draw(target)?;
+
+    Ok(())
+  }
+}
+
+pub struct Calendar<C> {
+  pub top_left: Point,
+  pub size: Size,
+  pub border: u32,
+  pub fg_color: C,
+  pub bg_color: C,
+  // If hi_color is None, the fg and bg colors are inverted instead.
+  pub hi_color: Option<C>,
+}
+
+impl<C> Drawable for Calendar<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let border = self.border;
+
+    let date_now = chrono::offset::Local::now().date();
+    let first_day = date_now.with_day(1).unwrap();
+    let last_day = date_now
+      .with_day(1)
+      .unwrap()
+      .with_month(date_now.month() % 11 + 1)
+      .unwrap()
+      .pred();
+
+    let empty_squares = first_day.weekday().num_days_from_monday();
+    let squares_needed = empty_squares + last_day.day();
+    let month_needs_separate_row = empty_squares < 4;
+    let mut rows_needed = squares_needed / 7 + 1;
+    if month_needs_separate_row {
+      rows_needed += 1;
+    }
+
+    let width = self.size.width / 7;
+    let height = self.size.height / rows_needed;
+
+    let month_width = if month_needs_separate_row {
+      width * 7
+    } else {
+      width * empty_squares
+    };
+    let calendar_month = CalendarMonth {
+      border,
+      top_left: self.top_left,
+      size: Size::new(month_width, height),
+      fg_color: self.fg_color,
+      bg_color: self.bg_color,
+      month: Month::from_u32(date_now.month()).unwrap(),
+    };
+    calendar_month.draw(target)?;
+
+    for i in empty_squares..squares_needed {
+      let x = i % 7;
+      let mut y = i / 7;
+      if month_needs_separate_row {
+        y = y + 1;
+      }
+      let day_of_month = i - empty_squares + 1;
+      let is_weekend = date_now
+        .with_day(day_of_month)
+        .unwrap()
+        .weekday()
+        .num_days_from_monday()
+        >= 5;
+      let is_today = day_of_month == date_now.day();
+
+      let (mut fg_color, mut bg_color, mut border) = match is_weekend ^ is_today {
+        false => (self.fg_color, self.bg_color, border),
+        true => (self.bg_color, self.fg_color, 0),
+      };
+      if is_today && self.hi_color.is_some() {
+        (fg_color, bg_color, border) = (self.bg_color, self.hi_color.unwrap(), 0);
+      }
+
+      let calendar_day = CalendarDay {
+        border,
+        top_left: self.top_left + Point::new((width * x) as i32, (height * y) as i32),
+        size: Size::new(width, height),
+        fg_color,
+        bg_color,
+        day_of_month: i - empty_squares + 1,
+        has_event: i - empty_squares + 1 == date_now.day(),
+      };
+      calendar_day.draw(target)?;
+    }
+
+    Ok(())
+  }
+}
+
+pub struct ScrollingWeek {
+  day: chrono::NaiveDate,
+}
+
+impl ScrollingWeek {
+  pub fn succ(&self) -> ScrollingWeek {
+    let start_of_next_month = self
+      .day
+      .with_month(self.day.month() % 11 + 1)
+      .unwrap()
+      .with_day(1)
+      .unwrap();
+
+    let days_until_next_month =
+      start_of_next_month.num_days_from_ce() - self.day.num_days_from_ce();
+    let day_of_week = self.day.weekday().number_from_monday() as i32;
+
+    let days_to_skip = if days_until_next_month < 7 {
+      days_until_next_month
+    } else {
+      8 - day_of_week
+    };
+
+    ScrollingWeek {
+      day: self
+        .day
+        .checked_add_signed(chrono::Duration::days(days_to_skip as i64))
+        .unwrap(),
+    }
+  }
+
+  pub fn month(&self) -> chrono::Month {
+    chrono::Month::from_u32(self.day.month()).unwrap()
+  }
+
+  pub fn week(&self) -> u32 {
+    self.day.iso_week().week()
+  }
+
+  pub fn year(&self) -> i32 {
+    self.day.year()
+  }
+}
+
+pub struct ScrollingCalendar<C> {
+  pub top_left: Point,
+  pub size: Size,
+  pub style: ComponentStyle<C>,
+  pub day: chrono::NaiveDate,
+  pub weeks: u32,
+}
+
+impl<C> Drawable for ScrollingCalendar<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let height = self.size.height / (1 + self.weeks * 2);
+    let mut week = ScrollingWeek {
+      day: chrono::NaiveDate::from_isoywd(
+        self.day.year(),
+        self.day.iso_week().week(),
+        chrono::Weekday::Mon,
+      )
+      .checked_add_signed(chrono::Duration::days(-7 * self.weeks as i64))
+      .unwrap(),
+    };
+
+    for i in 0..self.weeks * 2 {
+      week = week.succ();
+
+      let calendar_week = CalendarWeek {
+        top_left: Point::new(self.top_left.x, self.top_left.y + (height * i) as i32),
+        size: Size::new(self.size.width, height),
+        style: self.style.clone(),
+        year: week.year(),
+        month: week.month(),
+        week: week.week(),
+      };
+      calendar_week.draw(target)?;
+    }
+
+    Ok(())
+  }
+}
+
+pub struct CalendarWeek<C> {
+  pub top_left: Point,
+  pub size: Size,
+  pub style: ComponentStyle<C>,
+  pub year: i32,
+  pub month: chrono::Month,
+  pub week: u32,
+}
+
+impl<C> Drawable for CalendarWeek<C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let today = chrono::Utc::now().date();
+    let monday = chrono::NaiveDate::from_isoywd(self.year, self.week, chrono::Weekday::Mon);
+    let sunday = chrono::NaiveDate::from_isoywd(self.year, self.week, chrono::Weekday::Sun);
+    let week_starts_in_prev_month = monday.month() != self.month.number_from_month();
+    let week_ends_in_next_month = sunday.month() != self.month.number_from_month();
+    let first_day = match week_starts_in_prev_month {
+      true => sunday.with_day(1).unwrap(),
+      false => monday,
+    };
+    let last_day = match week_ends_in_next_month {
+      true => sunday.with_day(1).unwrap().pred(),
+      false => sunday,
+    };
+
+    let width = self.size.width / 7;
+
+    let mut weekday = first_day.weekday();
+    for i in first_day.weekday().number_from_monday()..(last_day.weekday().number_from_monday() + 1)
+    {
+      let day = chrono::NaiveDate::from_isoywd(self.year, self.week, weekday);
+
+      let (fg_color, bg_color) = match (
+        weekday.num_days_from_monday() < 5,
+        day.num_days_from_ce() == today.num_days_from_ce(),
+      ) {
+        (_, true) => (self.style.bg_color, self.style.hi_color),
+        (true, _) => (self.style.fg_color, self.style.bg_color),
+        (false, _) => (self.style.bg_color, self.style.fg_color),
+      };
+
+      let style = ComponentStyle {
+        fg_color,
+        bg_color,
+        ..self.style
+      };
+
+      let calendar_day = CalendarDay {
+        top_left: self.top_left + Point::new((width * weekday.num_days_from_monday()) as i32, 0),
+        size: Size::new(width, self.size.height),
+        border: self.style.border,
+        fg_color,
+        bg_color,
+        day_of_month: day.day(),
+        has_event: day.num_days_from_ce() == today.num_days_from_ce(),
+      };
+      calendar_day.draw(target)?;
+
+      weekday = weekday.succ();
+    }
+
+    Ok(())
+  }
+}
diff --git a/src/gauge.rs b/src/gauge.rs
new file mode 100644
index 0000000..add9350
--- /dev/null
+++ b/src/gauge.rs
@@ -0,0 +1,77 @@
+use embedded_graphics::{
+    mono_font::{ascii::FONT_6X9, MonoTextStyle},
+    pixelcolor::{BinaryColor, PixelColor},
+    prelude::*,
+    primitives::{PrimitiveStyle, Rectangle},
+    text::{Baseline, Text},
+};
+
+pub struct Gauge<'a, C> {
+    pub top_left: Point,
+    pub bezel: u32,
+    pub border: u32,
+    pub size: Size,
+    pub ratio: f32,
+    pub fg_color: C,
+    pub bg_color: C,
+    pub text: &'a str,
+}
+
+impl<C> Drawable for Gauge<'_, C>
+where
+    C: PixelColor + From<BinaryColor>,
+{
+    type Color = C;
+    type Output = ();
+
+    fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+    where
+        D: DrawTarget<Color = C>,
+    {
+        let margin = self.border + self.bezel;
+
+        Rectangle::new(self.top_left, self.size)
+            .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+            .draw(target)?;
+
+        let inner_size = self.size - Size::new(margin * 2, margin * 2);
+        let inner_filled = Size::new(
+            (inner_size.width as f32 * self.ratio).ceil() as u32,
+            inner_size.height,
+        );
+        let inner_unfilled = Size::new(inner_size.width - inner_filled.width, inner_size.height);
+
+        let filled_rect = Rectangle::new(
+            self.top_left + Point::new(margin as i32, margin as i32),
+            inner_filled,
+        );
+        let unfilled_rect = Rectangle::new(
+            self.top_left + Point::new(margin as i32 + inner_filled.width as i32, margin as i32),
+            inner_unfilled,
+        );
+
+        // Added stroke as well because sometimes it showed a 1px bezel otherwise
+        // This is probably because the outer border stroke extends border/2 out/inwards
+        filled_rect
+            .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+            .draw(target)?;
+        filled_rect
+            .into_styled(PrimitiveStyle::with_fill(self.fg_color))
+            .draw(target)?;
+
+        let filled_style = MonoTextStyle::new(&FONT_6X9, self.bg_color);
+        let unfilled_style = MonoTextStyle::new(&FONT_6X9, self.fg_color);
+
+        let mut text =
+            Text::with_baseline(self.text, self.top_left, filled_style, Baseline::Middle);
+        let text_box = text.bounding_box();
+        text.position = self.top_left + Point::new(margin as i32, margin as i32) + inner_size / 2
+            - Point::new((text_box.size.width as f32 / 2.) as i32, 0);
+
+        text.draw(&mut target.clipped(&filled_rect))?;
+        let text = Text::with_baseline(self.text, text.position, unfilled_style, Baseline::Middle);
+        text.draw(&mut target.clipped(&unfilled_rect))?;
+
+        Ok(())
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..f61eb47
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,9 @@
+mod bullet_counter;
+mod calendar;
+mod gauge;
+mod style;
+
+pub use bullet_counter::BulletCounter;
+pub use calendar::{Calendar, ScrollingCalendar};
+pub use gauge::Gauge;
+pub use style::ComponentStyle;
diff --git a/src/list_item.rs b/src/list_item.rs
new file mode 100644
index 0000000..9bdcd0f
--- /dev/null
+++ b/src/list_item.rs
@@ -0,0 +1,78 @@
+use embedded_graphics::{
+  pixelcolor::{BinaryColor, PixelColor},
+  prelude::*,
+  primitives::{Line, PrimitiveStyle, Rectangle},
+  text::Text,
+};
+use embedded_layout::prelude::*;
+
+pub struct ListItemData {
+  pub text: &'a str,
+  pub icon: &'a str,
+}
+
+pub struct List<'a, C> {
+  pub top_left: Point,
+  pub border: u32,
+  pub size: Size,
+  pub fg_color: C,
+  pub bg_color: C,
+  pub list_items: Vec<ListItemData>,
+}
+
+impl<C> Drawable for ListItem<'_, C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let rect = Rectangle::new(self.top_left, self.size);
+    rect
+      .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+      .draw(target)?;
+    rect
+      .into_styled(PrimitiveStyle::with_fill(self.fg_color))
+      .draw(target)?;
+
+    // TODO: draw list items
+
+    Ok(())
+  }
+}
+
+pub struct ListItem<'a, C> {
+  pub top_left: Point,
+  pub border: u32,
+  pub size: Size,
+  pub fg_color: C,
+  pub bg_color: C,
+  pub text: &'a str,
+}
+
+impl<C> Drawable for ListItem<'_, C>
+where
+  C: PixelColor + From<BinaryColor>,
+{
+  type Color = C;
+  type Output = ();
+
+  fn draw<D>(&self, target: &mut D) -> Result<Self::Output, D::Error>
+  where
+    D: DrawTarget<Color = C>,
+  {
+    let rect = Rectangle::new(self.top_left, self.size);
+    rect
+      .into_styled(PrimitiveStyle::with_stroke(self.fg_color, self.border))
+      .draw(target)?;
+    rect
+      .into_styled(PrimitiveStyle::with_fill(self.fg_color))
+      .draw(target)?;
+
+    Ok(())
+  }
+}
diff --git a/src/style.rs b/src/style.rs
new file mode 100644
index 0000000..80d8c01
--- /dev/null
+++ b/src/style.rs
@@ -0,0 +1,8 @@
+#[derive(Clone)]
+pub struct ComponentStyle<C> {
+  pub fg_color: C,
+  pub bg_color: C,
+  pub hi_color: C,
+  pub border: u32,
+  pub bezel: u32,
+}