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|
use std::cmp::max;
use tui::{
backend::Backend,
layout::{Constraint, Direction, Layout, Rect},
widgets::Block,
Frame,
};
use crate::{
app::{widgets::tui_stuff::PipeGauge, AppConfigFields, Component, DataCollection, Widget},
canvas::Painter,
constants::SIDE_BORDERS,
options::layout_options::LayoutRule,
};
const REQUIRED_COLUMNS: usize = 4;
#[derive(Debug)]
pub struct BasicCpu {
bounds: Rect,
display_data: Vec<(f64, String, String)>,
width: LayoutRule,
showing_avg: bool,
}
impl BasicCpu {
/// Creates a new [`BasicCpu`] given a [`AppConfigFields`].
pub fn from_config(app_config_fields: &AppConfigFields) -> Self {
Self {
bounds: Default::default(),
display_data: Default::default(),
width: Default::default(),
showing_avg: app_config_fields.show_average_cpu,
}
}
/// Sets the width.
pub fn width(mut self, width: LayoutRule) -> Self {
self.width = width;
self
}
}
impl Component for BasicCpu {
fn bounds(&self) -> Rect {
self.bounds
}
fn set_bounds(&mut self, new_bounds: Rect) {
self.bounds = new_bounds;
}
}
impl Widget for BasicCpu {
fn get_pretty_name(&self) -> &'static str {
"CPU"
}
fn draw<B: Backend>(
&mut self, painter: &Painter, f: &mut Frame<'_, B>, area: Rect, selected: bool,
_expanded: bool,
) {
const CONSTRAINTS: [Constraint; 2 * REQUIRED_COLUMNS - 1] = [
Constraint::Ratio(1, REQUIRED_COLUMNS as u32),
Constraint::Length(2),
Constraint::Ratio(1, REQUIRED_COLUMNS as u32),
Constraint::Length(2),
Constraint::Ratio(1, REQUIRED_COLUMNS as u32),
Constraint::Length(2),
Constraint::Ratio(1, REQUIRED_COLUMNS as u32),
];
let block = Block::default()
.borders(*SIDE_BORDERS)
.border_style(painter.colours.highlighted_border_style);
let inner_area = block.inner(area);
let split_area = Layout::default()
.direction(Direction::Horizontal)
.constraints(CONSTRAINTS)
.split(inner_area)
.into_iter()
.enumerate()
.filter_map(
|(index, rect)| {
if index % 2 == 0 {
Some(rect)
} else {
None
}
},
);
let display_data_len = self.display_data.len();
let length = display_data_len / REQUIRED_COLUMNS;
let largest_height = max(
1,
length
+ (if display_data_len % REQUIRED_COLUMNS == 0 {
0
} else {
1
}),
);
let mut leftover = display_data_len % REQUIRED_COLUMNS;
let column_heights = (0..REQUIRED_COLUMNS).map(|_| {
if leftover > 0 {
leftover -= 1;
length + 1
} else {
length
}
});
if selected {
f.render_widget(block, area);
}
let mut index_offset = 0;
split_area
.into_iter()
.zip(column_heights)
.for_each(|(area, height)| {
let column_areas = Layout::default()
.direction(Direction::Vertical)
.constraints(vec![Constraint::Length(1); largest_height])
.split(area);
let num_entries = if index_offset + height < display_data_len {
height
} else {
display_data_len - index_offset
};
let end = index_offset + num_entries;
self.display_data[index_offset..end]
.iter()
.zip(column_areas)
.enumerate()
.for_each(|(column_index, ((percent, label, usage_label), area))| {
let cpu_index = index_offset + column_index;
let style = if cpu_index == 0 {
painter.colours.avg_colour_style
} else {
let cpu_style_index = if self.showing_avg {
cpu_index - 1
} else {
cpu_index
};
painter.colours.cpu_colour_styles
[cpu_style_index % painter.colours.cpu_colour_styles.len()]
};
f.render_widget(
PipeGauge::default()
.ratio(*percent)
.style(style)
.gauge_style(style)
.start_label(label.clone())
.end_label(usage_label.clone()),
area,
);
});
index_offset = end;
});
}
fn update_data(&mut self, data_collection: &DataCollection) {
self.display_data = data_collection
.cpu_harvest
.iter()
.map(|data| {
(
data.cpu_usage / 100.0,
format!(
"{:3}",
data.cpu_count
.map(|c| c.to_string())
.unwrap_or_else(|| data.cpu_prefix.clone())
),
format!("{:3.0}%", data.cpu_usage.round()),
)
})
.collect::<Vec<_>>();
}
fn width(&self) -> LayoutRule {
self.width
}
fn height(&self) -> LayoutRule {
let display_data_len = self.display_data.len();
let length = max(
1,
(display_data_len / REQUIRED_COLUMNS) as u16
+ (if display_data_len % REQUIRED_COLUMNS == 0 {
0
} else {
1
}),
);
LayoutRule::Length { length }
}
}
|
