embedded-components/src/list_item.rs

use crate::ComponentStyle;
use embedded_graphics::{
  mono_font::{
    ascii::{FONT_10X20, FONT_7X14},
    MonoTextStyle,
  },
  pixelcolor::{BinaryColor, PixelColor},
  prelude::*,
  primitives::{Line, PrimitiveStyle, Rectangle},
  text::{Baseline, Text},
};
use embedded_layout::prelude::*;

pub struct ListItemData {
  pub text: String,
  pub icon: String,
  pub progress: f32,
}

impl<'a> ListItemData {
  pub fn new(icon: &'a str, text: &'a str) -> Self {
    Self {
      icon: String::from(icon),
      text: String::from(text),
      progress: 0f32,
    }
  }

  pub fn with_progress(self, progress: f32) -> Self {
    Self { progress, ..self }
  }
}

pub struct List<C> {
  pub style: ComponentStyle<C>,
  pub top_left: Point,
  pub size: Size,
  pub items_shown: usize,
  pub list_items: Vec<ListItemData>,
}

impl<C> Drawable for List<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.style.bg_color,
        self.style.border,
      ))
      .draw(target)?;
    rect
      .into_styled(PrimitiveStyle::with_fill(self.style.bg_color))
      .draw(target)?;

    let height = self.size.height / self.items_shown as u32;

    for (i, item) in self.list_items.iter().enumerate().take(self.items_shown) {
      let list_item = ListItem {
        style: self.style.clone(),
        top_left: self.top_left + Point::new(0, (height as usize * i) as i32),
        size: Size::new(self.size.width, height),
        text: &item.text,
        icon: &item.icon,
        progress: item.progress,
      };
      list_item.draw(target)?;
    }

    Ok(())
  }
}

pub struct ListItem<'a, C> {
  pub style: ComponentStyle<C>,
  pub top_left: Point,
  pub size: Size,
  pub text: &'a str,
  pub icon: &'a str,
  pub progress: f32,
}

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 + Size::new(self.style.border / 2 + 1, self.style.border / 2 + 1),
    );
    rect
      .into_styled(PrimitiveStyle::with_fill(self.style.bg_color))
      .draw(target)?;
    rect
      .into_styled(PrimitiveStyle::with_stroke(
        self.style.border_color,
        self.style.border,
      ))
      .draw(target)?;

    let icon_square = Rectangle::new(self.top_left, Size::new(rect.size.height, rect.size.height));
    icon_square
      .into_styled(PrimitiveStyle::with_stroke(
        self.style.border_color,
        self.style.border,
      ))
      .draw(target)?;

    let icon_style = MonoTextStyle::new(&FONT_10X20, self.style.hi_color);

    let mut icon = Text::with_baseline(self.icon, self.top_left, icon_style, Baseline::Middle);
    let icon_box = icon.bounding_box();
    icon.position = self.top_left
      + Point::new(
        (self.size.height / 2 - icon_box.size.width / 2) as i32,
        (self.size.height / 2) as i32,
      );

    icon.draw(&mut target.clipped(&rect))?;

    let text_style = MonoTextStyle::new(&FONT_7X14, self.style.fg_color);

    let mut text = Text::with_baseline(self.text, self.top_left, text_style, Baseline::Middle);
    let text_box = text.bounding_box();
    text.position = self.top_left
      + Point::new(
        (self.size.height as f32 * 1.2) as i32,
        self.size.height as i32 / 2,
      );

    text.draw(&mut target.clipped(&rect))?;

    if self.progress >= 100f32 {
      let strikethrough = Line::new(
        text.position + Point::new(0, 1),
        text.position + Point::new(text_box.size.width as i32, 1),
      );
      strikethrough
        .into_styled(PrimitiveStyle::with_stroke(self.style.fg_color, 2))
        .draw(target)?;
    }

    Ok(())
  }
}