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|
use cursive::direction::Direction;
use cursive::event::{Event, EventResult, Key};
use cursive::theme::{Effect, Style};
use cursive::view::View;
use cursive::{Printer, Vec2};
use chrono::prelude::*;
use chrono::{Duration, Local, NaiveDate};
use crate::habit::{Bit, Count, Habit, TrackEvent, ViewMode};
use crate::CONFIGURATION;
pub trait ShadowView {
fn draw(&self, printer: &Printer);
fn required_size(&mut self, _: Vec2) -> Vec2;
fn take_focus(&mut self, _: Direction) -> bool;
fn on_event(&mut self, e: Event) -> EventResult;
}
// the only way to not rewrite each View implementation for trait
// objects of Habit is to rewrite the View trait itself.
impl<T> ShadowView for T
where
T: Habit,
T::HabitType: std::fmt::Display,
{
fn draw(&self, printer: &Printer) {
let now = if self.view_month_offset() == 0 {
Local::today()
} else {
Local::today()
.checked_sub_signed(Duration::weeks(4 * self.view_month_offset() as i64))
.unwrap()
};
let year = now.year();
let month = now.month();
let goal_reached_style = Style::from(CONFIGURATION.reached_color);
let todo_style = Style::from(CONFIGURATION.todo_color);
let future_style = Style::from(CONFIGURATION.future_color);
let strikethrough = Style::from(Effect::Strikethrough);
let goal_status =
self.view_month_offset() == 0 && self.reached_goal(Local::now().naive_utc().date());
printer.with_style(
Style::merge(&[
if goal_status {
strikethrough
} else {
Style::none()
},
if !printer.focused {
future_style
} else {
Style::none()
},
]),
|p| {
p.print((0, 0), &format!(" {} ", self.name()));
},
);
let draw_month = |printer: &Printer| {
let days = (1..31)
.map(|i| NaiveDate::from_ymd_opt(year, month, i))
.flatten() // dates 28-31 may not exist, ignore them if they don't
.collect::<Vec<_>>();
for (week, line_nr) in days.chunks(7).zip(2..) {
let weekly_goal = self.goal() * week.len() as u32;
let is_this_week = week.contains(&Local::now().naive_utc().date());
let remaining = week.iter().map(|&i| self.remaining(i)).sum::<u32>();
let completions = weekly_goal - remaining;
let full = CONFIGURATION.view_width - 8;
let bars_to_fill = (completions * full as u32) / weekly_goal;
let percentage = (completions as f64 * 100f64) / weekly_goal as f64;
printer.with_style(future_style, |p| {
p.print((4, line_nr), &"―".repeat(full));
});
printer.with_style(goal_reached_style, |p| {
p.print((4, line_nr), &"―".repeat(bars_to_fill as usize));
});
printer.with_style(
if is_this_week {
Style::none()
} else {
future_style
},
|p| {
p.print((0, line_nr), &format!("{:3.0}% ", percentage));
},
);
}
};
let draw_day = |printer: &Printer| {
let mut i = 1;
while let Some(d) = NaiveDate::from_ymd_opt(year, month, i) {
let day_style;
if self.reached_goal(d) {
day_style = goal_reached_style;
} else {
day_style = todo_style;
}
let coords: Vec2 = ((i % 7) * 3, i / 7 + 2).into();
if let Some(c) = self.get_by_date(d) {
printer.with_style(day_style, |p| {
p.print(coords, &format!("{:^3}", c));
});
} else {
printer.with_style(future_style, |p| {
p.print(coords, &format!("{:^3}", CONFIGURATION.future_chr));
});
}
i += 1;
}
};
match self.view_mode() {
ViewMode::Day => draw_day(printer),
ViewMode::Month => draw_month(printer),
_ => draw_day(printer),
};
}
fn required_size(&mut self, _: Vec2) -> Vec2 {
(25, 6).into()
}
fn take_focus(&mut self, _: Direction) -> bool {
true
}
fn on_event(&mut self, e: Event) -> EventResult {
let now = Local::now().naive_utc().date();
match e {
Event::Key(Key::Enter) | Event::Char('n') => {
self.modify(now, TrackEvent::Increment);
return EventResult::Consumed(None);
}
Event::Key(Key::Backspace) | Event::Char('p') => {
self.modify(now, TrackEvent::Decrement);
return EventResult::Consumed(None);
}
_ => return EventResult::Ignored,
}
}
}
macro_rules! auto_view_impl {
($struct_name:ident) => {
impl View for $struct_name {
fn draw(&self, printer: &Printer) {
ShadowView::draw(self, printer);
}
fn required_size(&mut self, x: Vec2) -> Vec2 {
ShadowView::required_size(self, x)
}
fn take_focus(&mut self, d: Direction) -> bool {
ShadowView::take_focus(self, d)
}
fn on_event(&mut self, e: Event) -> EventResult {
ShadowView::on_event(self, e)
}
}
};
}
auto_view_impl!(Count);
auto_view_impl!(Bit);
|
