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use std::time::Instant;
use tui::{
Frame,
layout::{Constraint, Rect},
style::Style,
};
use crate::{
app::{App, data::Values},
canvas::{
Painter,
components::time_graph::{GraphData, PercentTimeGraph},
drawing_utils::should_hide_x_label,
},
collection::memory::MemData,
get_binary_unit_and_denominator,
};
/// Convert memory info into a combined memory label.
#[inline]
fn memory_legend_label(name: &str, data: Option<&MemData>) -> String {
if let Some(data) = data {
let total_bytes = data.total_bytes.get();
let percentage = data.used_bytes as f64 / total_bytes as f64 * 100.0;
let (unit, denominator) = get_binary_unit_and_denominator(total_bytes);
let used = data.used_bytes as f64 / denominator;
let total = total_bytes as f64 / denominator;
format!("{name}:{percentage:3.0}% {used:.1}{unit}/{total:.1}{unit}")
} else {
format!("{name}: 0% 0.0B/0.0B")
}
}
/// Get graph data.
#[inline]
fn graph_data<'a>(
out: &mut Vec<GraphData<'a>>, name: &str, last_harvest: Option<&'a MemData>,
time: &'a [Instant], values: &'a Values, style: Style,
) {
if !values.no_elements() {
let label = memory_legend_label(name, last_harvest).into();
out.push(
GraphData::default()
.name(label)
.time(time)
.values(values)
.style(style),
);
}
}
impl Painter {
pub fn draw_memory_graph(
&self, f: &mut Frame<'_>, app_state: &mut App, draw_loc: Rect, widget_id: u64,
) {
if let Some(mem_state) = app_state.states.mem_state.widget_states.get_mut(&widget_id) {
let hide_x_labels = should_hide_x_label(
app_state.app_config_fields.hide_time,
app_state.app_config_fields.autohide_time,
&mut mem_state.autohide_timer,
draw_loc,
);
let graph_data = {
let mut size = 1;
let data = app_state.data_store.get_data();
// TODO: is this optimization really needed...? This just pre-allocates a vec, but it'll probably never
// be that big...
if data.swap_harvest.is_some() {
size += 1; // add capacity for SWAP
}
#[cfg(feature = "zfs")]
{
if data.arc_harvest.is_some() {
size += 1; // add capacity for ARC
}
}
#[cfg(feature = "gpu")]
{
size += data.gpu_harvest.len(); // add row(s) for gpu
}
let mut points = Vec::with_capacity(size);
let timeseries = &data.timeseries_data;
let time = ×eries.time;
// TODO: Add a "no data" option here/to time graph if there is no entries
graph_data(
&mut points,
"RAM",
data.ram_harvest.as_ref(),
time,
×eries.ram,
self.styles.ram_style,
);
graph_data(
&mut points,
"SWP",
data.swap_harvest.as_ref(),
time,
×eries.swap,
self.styles.swap_style,
);
#[cfg(not(target_os = "windows"))]
{
graph_data(
&mut points,
"CACHE", // TODO: Figure out how to line this up better
data.cache_harvest.as_ref(),
time,
×eries.cache_mem,
self.styles.cache_style,
);
}
#[cfg(feature = "zfs")]
{
graph_data(
&mut points,
"ARC",
data.arc_harvest.as_ref(),
time,
×eries.arc_mem,
self.styles.arc_style,
);
}
#[cfg(feature = "gpu")]
{
let mut colour_index = 0;
let gpu_styles = &self.styles.gpu_colours;
for (name, harvest) in &data.gpu_harvest {
if let Some(gpu_data) = data.timeseries_data.gpu_mem.get(name) {
let style = {
if gpu_styles.is_empty() {
Style::default()
} else {
let colour = gpu_styles[colour_index % gpu_styles.len()];
colour_index += 1;
colour
}
};
graph_data(
&mut points,
name, // TODO: REALLY figure out how to line this up better
Some(harvest),
time,
gpu_data,
style,
);
}
}
}
points
};
PercentTimeGraph {
display_range: mem_state.current_display_time,
hide_x_labels,
app_config_fields: &app_state.app_config_fields,
current_widget: app_state.current_widget.widget_id,
is_expanded: app_state.is_expanded,
title: " Memory ".into(),
styles: &self.styles,
widget_id,
legend_position: app_state.app_config_fields.memory_legend_position,
legend_constraints: Some((Constraint::Ratio(3, 4), Constraint::Ratio(3, 4))),
}
.build()
.draw(f, draw_loc, graph_data);
}
if app_state.should_get_widget_bounds() {
// Update draw loc in widget map
if let Some(widget) = app_state.widget_map.get_mut(&widget_id) {
widget.top_left_corner = Some((draw_loc.x, draw_loc.y));
widget.bottom_right_corner =
Some((draw_loc.x + draw_loc.width, draw_loc.y + draw_loc.height));
}
}
}
}