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- use crate::window::Size;
- use pango::LayoutExt;
- #[derive(Debug,Clone,Copy)]
- pub enum Located {
- FromLeft(i32),
- FromRight(i32),
- }
- pub struct Config<'r> {
- pub left: Vec<&'r Widget>,
- pub right: Vec<&'r Widget>,
- }
- impl<'r> Config<'r> {
- pub fn draw(&self, d: &Drawing) {
- let mut offset = 10;
- for w in self.left.iter() {
- offset += 10 + w.draw(d, Located::FromLeft(offset));
- }
- offset = 10;
- for w in self.right.iter() {
- offset += 10 + w.draw(d, Located::FromRight(offset));
- }
- }
- }
- impl Located {
- fn draw_text(&self, d: &Drawing, msg: &str) -> i32 {
- d.lyt.set_text(msg);
- let (w, _) = d.lyt.get_size();
- d.ctx.move_to(self.target_x(d, w / pango::SCALE), 4.0);
- pangocairo::functions::show_layout(d.ctx, d.lyt);
- w / pango::SCALE
- }
- fn target_x(&self, d: &Drawing, w: i32) -> f64 {
- match self {
- Located::FromLeft(x) => *x as f64,
- Located::FromRight(x) => (d.size.wd - (x + w)) as f64,
- }
- }
- }
- pub struct Drawing<'t> {
- pub ctx: &'t cairo::Context,
- pub lyt: &'t pango::Layout,
- pub size: Size,
- }
- pub trait Widget {
- fn draw(&self, d: &Drawing, loc: Located) -> i32;
- }
- #[derive(Debug)]
- pub struct Time {
- fmt: String,
- }
- impl Time {
- pub fn new() -> Time {
- Time {
- fmt: format!("%a %b %d %H:%M")
- }
- }
- }
- impl Widget for Time {
- fn draw(&self, d: &Drawing, loc: Located) -> i32 {
- let now = chrono::Local::now();
- loc.draw_text(d, &format!("{}", &now.format(&self.fmt)))
- }
- }
- #[derive(Debug)]
- pub struct Text<'t> {
- text: &'t str,
- }
- impl<'t> Text<'t> {
- pub fn new(text: &str) -> Text {
- Text { text }
- }
- }
- impl<'t> Widget for Text<'t> {
- fn draw(&self, d: &Drawing, loc: Located) -> i32 {
- loc.draw_text(d, &self.text)
- }
- }
- pub struct SmallBox;
- impl Widget for SmallBox {
- fn draw(&self, d: &Drawing, loc: Located) -> i32 {
- let sz = d.size.ht - 8;
- let x = loc.target_x(d, sz);
- d.ctx.rectangle(x, 4.0, sz as f64, sz as f64);
- d.ctx.fill();
- sz
- }
- }
- pub struct Battery {
- file_list: Vec<std::path::PathBuf>,
- }
- impl Battery {
- pub fn new() -> Result<Battery, failure::Error> {
- use std::fs;
- let mut batteries = Vec::new();
- for entry in fs::read_dir("/sys/class/power_supply")? {
- let e = entry?;
- if e.file_name().to_string_lossy().starts_with("BAT") {
- let mut path = e.path();
- path.push("capacity");
- batteries.push(path);
- }
- }
- Ok(Battery {
- file_list: batteries,
- })
- }
- fn read_status(&self) -> Result<f64, failure::Error> {
- let charges: Result<Vec<i32>, failure::Error> =
- self.file_list.iter().map(|path| {
- Ok(std::fs::read_to_string(path)?.trim().parse()?)
- }).collect();
- let charges = charges?;
- let len = charges.len() as f64;
- let sum: i32 = charges.into_iter().sum();
- Ok(sum as f64 / len / 100.0)
- }
- }
- impl Widget for Battery {
- fn draw(&self, d: &Drawing, loc: Located) -> i32 {
- let amt = self.read_status().unwrap();
- let sz = d.size.ht - 8;
- let x = loc.target_x(d, sz);
- if amt < 0.1 {
- d.ctx.set_source_rgb(1.0, 0.0, 0.0);
- } else if amt < 0.5 {
- d.ctx.set_source_rgb(1.0, 1.0, 0.0);
- } else {
- d.ctx.set_source_rgb(0.0, 1.0, 0.5);
- }
- d.ctx.rectangle(x, 8.0, sz as f64 * amt, sz as f64 - 8.0);
- d.ctx.fill();
- d.ctx.set_source_rgb(1.0, 1.0, 1.0);
- d.ctx.rectangle(x, 8.0, sz as f64, sz as f64 - 8.0);
- d.ctx.stroke();
- sz
- }
- }
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