Files
ncspot/src/ui/trackbutton.rs
Henrik Friedrichsen 909ce8c81d cargo fmt
2019-03-03 15:53:54 +01:00

121 lines
3.4 KiB
Rust

use cursive::align::HAlign;
use cursive::direction::Direction;
use cursive::event::{Callback, Event, EventResult, EventTrigger};
use cursive::theme::ColorStyle;
use cursive::traits::View;
use cursive::vec::Vec2;
use cursive::Cursive;
use cursive::Printer;
use rspotify::spotify::model::track::FullTrack;
use unicode_width::UnicodeWidthStr;
pub struct TrackButton {
callbacks: Vec<(EventTrigger, Callback)>,
track: FullTrack,
title: String,
duration: String,
enabled: bool,
last_size: Vec2,
invalidated: bool,
}
impl TrackButton {
pub fn new(track: &FullTrack) -> TrackButton {
let artists = track
.artists
.iter()
.map(|ref artist| artist.name.clone())
.collect::<Vec<String>>()
.join(", ");
let formatted_title = format!("{} - {}", artists, track.name);
let minutes = track.duration_ms / 60000;
let seconds = (track.duration_ms % 60000) / 1000;
let formatted_duration = format!("{:02}:{:02}", minutes, seconds);
TrackButton {
callbacks: Vec::new(),
track: track.clone(),
title: formatted_title,
duration: formatted_duration,
enabled: true,
last_size: Vec2::zero(),
invalidated: true,
}
}
pub fn add_callback<F, E>(&mut self, trigger: E, cb: F)
where
E: Into<EventTrigger>,
F: 'static + Fn(&mut Cursive),
{
self.callbacks.push((trigger.into(), Callback::from_fn(cb)));
}
}
// This is heavily based on Cursive's Button implementation with minor
// modifications to print the track's duration at the right screen border
impl View for TrackButton {
fn draw(&self, printer: &Printer<'_, '_>) {
if printer.size.x == 0 {
return;
}
let style = if !(self.enabled && printer.enabled) {
ColorStyle::secondary()
} else if !printer.focused {
ColorStyle::primary()
} else {
ColorStyle::highlight()
};
// shorten titles that are too long and append ".." to indicate this
let mut title_shortened = self.title.clone();
title_shortened.truncate(printer.size.x - self.duration.width() - 1);
if title_shortened.width() < self.title.width() {
let offset = title_shortened.width() - 2;
title_shortened.replace_range(offset.., "..");
}
printer.with_color(style, |printer| {
printer.print((0, 0), &title_shortened);
});
// track duration goes to the end of the line
let offset = HAlign::Right.get_offset(self.duration.width(), printer.size.x);
printer.with_color(style, |printer| {
printer.print((offset, 0), &self.duration);
});
}
fn on_event(&mut self, event: Event) -> EventResult {
for (trigger, callback) in self.callbacks.iter() {
if trigger.apply(&event) {
return EventResult::Consumed(Some(callback.clone()));
}
}
EventResult::Ignored
}
fn layout(&mut self, size: Vec2) {
self.last_size = size;
self.invalidated = false;
}
fn required_size(&mut self, constraint: Vec2) -> Vec2 {
// we always want the full width
Vec2::new(constraint.x, 1)
}
fn take_focus(&mut self, _: Direction) -> bool {
self.enabled
}
fn needs_relayout(&self) -> bool {
self.invalidated
}
}