93 lines
2.6 KiB
Rust
93 lines
2.6 KiB
Rust
use crate::color::Color;
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use crate::draw::Font;
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use crate::{
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fonts::FontRef,
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widget::{DrawContext, DrawReport, KeyState, ModifiersState, WaitContext, Widget},
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};
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use chrono::{Duration, NaiveDateTime, Timelike};
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pub struct Clock<'a> {
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cur_time: NaiveDateTime,
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clock_cache: Font<'a>,
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size: f32,
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digit: u32,
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colon: u32,
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}
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impl<'a> Clock<'a> {
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pub fn new(time: NaiveDateTime, font: FontRef, size: f32) -> ::std::io::Result<Box<Clock>> {
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let mut clock_cache = Font::new(font, size);
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clock_cache.add_str_to_cache("0123456789:");
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let digit = clock_cache.auto_widest("123456789")?;
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let colon = clock_cache.auto_widest(":")?;
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Ok(Box::new(Clock {
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cur_time: time,
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clock_cache,
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size,
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digit,
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colon,
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}))
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}
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}
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impl<'a> Widget for Clock<'a> {
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fn wait(&mut self, ctx: &mut WaitContext) {
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let target = (self.cur_time + Duration::seconds(60))
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.with_second(0)
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.unwrap()
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.with_nanosecond(0)
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.unwrap();
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ctx.set_time(target);
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}
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fn enter(&mut self) {}
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fn leave(&mut self) {}
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fn size(&self) -> (u32, u32) {
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(self.digit * 4 + self.colon, self.size.ceil() as u32)
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}
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fn draw(
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&mut self,
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ctx: &mut DrawContext,
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pos: (u32, u32),
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_expansion: (u32, u32),
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) -> Result<DrawReport, ::std::io::Error> {
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let (width, height) = self.size();
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if !(ctx.time.date() != self.cur_time.date()
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|| ctx.time.hour() != self.cur_time.hour()
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|| ctx.time.minute() != self.cur_time.minute()
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|| ctx.force)
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{
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return Ok(DrawReport::empty(width, height));
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}
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self.cur_time = ctx.time;
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let buf = &mut ctx.buf.subdimensions((pos.0, pos.1, width, height))?;
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buf.memset(ctx.bg);
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let digit = self.digit;
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let colon = self.colon;
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self.clock_cache.draw_text_fixed_width(
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buf,
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ctx.bg,
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&Color::new(1.0, 1.0, 1.0, 1.0),
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&[digit, digit, colon, digit, digit],
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&format!("{:02}:{:02}", ctx.time.hour(), ctx.time.minute()),
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)?;
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Ok(DrawReport {
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width,
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height,
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damage: vec![(pos.0 as i32, pos.1 as i32, width as i32, height as i32)],
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full_damage: false,
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})
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}
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fn keyboard_input(&mut self, _: u32, _: ModifiersState, _: KeyState, _: Option<String>) {}
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fn mouse_click(&mut self, _: u32, _: (u32, u32)) {}
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fn mouse_scroll(&mut self, _: (f64, f64), _: (u32, u32)) {}
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}
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