woocraft 0.4.5

GPUI components lib for Woocraft design system.
Documentation 
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use gpui::{
  App, Bounds, FontWeight, Hsla, PathBuilder, Pixels, Point, SharedString, TextAlign, Window,
  point, px,
};

use super::{
  label::{PlotLabel, TEXT_GAP, TEXT_SIZE, Text},
  origin_point,
};

pub const AXIS_GAP: f32 = 18.;

pub struct AxisText {
  pub text: SharedString,
  pub tick: Pixels,
  pub color: Hsla,
  pub font_size: Pixels,
  pub align: TextAlign,
}

impl AxisText {
  pub fn new(text: impl Into<SharedString>, tick: impl Into<Pixels>, color: Hsla) -> Self {
    Self {
      text: text.into(),
      tick: tick.into(),
      color,
      font_size: TEXT_SIZE.into(),
      align: TextAlign::Left,
    }
  }

  pub fn font_size(mut self, font_size: impl Into<Pixels>) -> Self {
    self.font_size = font_size.into();
    self
  }

  pub fn align(mut self, align: TextAlign) -> Self {
    self.align = align;
    self
  }
}

#[derive(Default)]
pub struct PlotAxis {
  x: Option<Pixels>,
  x_label: PlotLabel,
  show_x_axis: bool,
  y: Option<Pixels>,
  y_label: PlotLabel,
  show_y_axis: bool,
  stroke: Hsla,
}

impl PlotAxis {
  pub fn new() -> Self {
    Self {
      show_x_axis: true,
      ..Default::default()
    }
  }

  /// Set the x-axis of the Axis.
  pub fn x(mut self, x: impl Into<Pixels>) -> Self {
    self.x = Some(x.into());
    self
  }

  /// Hide the x-axis of the Axis.
  pub fn hide_x_axis(mut self) -> Self {
    self.show_x_axis = false;
    self
  }

  /// Set the x-label of the Axis.
  pub fn x_label(mut self, label: impl IntoIterator<Item = AxisText>) -> Self {
    if let Some(x) = self.x {
      self.x_label = label
        .into_iter()
        .map(|t| Text {
          text: t.text,
          origin: point(t.tick, x + px(TEXT_GAP * 3.)),
          color: t.color,
          font_size: t.font_size,
          font_weight: FontWeight::NORMAL,
          align: t.align,
        })
        .into();
    }
    self
  }

  /// Set the y-axis of the Axis.
  pub fn y(mut self, y: impl Into<Pixels>) -> Self {
    self.y = Some(y.into());
    self
  }

  /// Hide the y-axis of the Axis.
  pub fn hide_y_axis(mut self) -> Self {
    self.show_y_axis = false;
    self
  }

  /// Set the y-label of the Axis.
  pub fn y_label(mut self, label: impl IntoIterator<Item = AxisText>) -> Self {
    if let Some(y) = self.y {
      self.y_label = label
        .into_iter()
        .map(|t| Text {
          text: t.text,
          origin: point(y + px(TEXT_GAP), t.tick),
          color: t.color,
          font_size: t.font_size,
          font_weight: FontWeight::NORMAL,
          align: t.align,
        })
        .into();
    }
    self
  }

  /// Set the stroke color of the Axis.
  pub fn stroke(mut self, stroke: impl Into<Hsla>) -> Self {
    self.stroke = stroke.into();
    self
  }

  fn draw_axis(&self, start_point: Point<Pixels>, end_point: Point<Pixels>, window: &mut Window) {
    let mut builder = PathBuilder::stroke(px(1.));
    builder.move_to(start_point);
    builder.line_to(end_point);
    if let Ok(path) = builder.build() {
      window.paint_path(path, self.stroke);
    }
  }

  /// Paint the Axis.
  pub fn paint(&self, bounds: &Bounds<Pixels>, window: &mut Window, cx: &mut App) {
    let origin = bounds.origin;

    // X axis
    if let Some(x) = self.x
      && self.show_x_axis
    {
      self.draw_axis(
        origin_point(px(0.), x, origin),
        origin_point(bounds.size.width, x, origin),
        window,
      );
    }
    self.x_label.paint(bounds, window, cx);

    // Y axis
    if let Some(y) = self.y
      && self.show_y_axis
    {
      self.draw_axis(
        origin_point(y, px(0.), origin),
        origin_point(y, bounds.size.height, origin),
        window,
      );
    }
    self.y_label.paint(bounds, window, cx);
  }
}