134 lines
3.8 KiB
Rust
134 lines
3.8 KiB
Rust
// This file is part of Deja-Vu.
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//
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// Deja-Vu is free software: you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Deja-Vu is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Deja-Vu. If not, see <https://www.gnu.org/licenses/>.
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//
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use std::time::Instant;
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use color_eyre::Result;
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use ratatui::{
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Frame,
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layout::{Constraint, Layout, Rect},
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style::{Style, Stylize},
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text::Span,
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widgets::Paragraph,
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};
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use super::Component;
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use crate::action::Action;
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#[derive(Debug, Clone, PartialEq)]
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pub struct FpsCounter {
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mode: String,
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last_tick_update: Instant,
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tick_count: u32,
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ticks_per_second: f64,
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last_frame_update: Instant,
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frame_count: u32,
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frames_per_second: f64,
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}
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impl Default for FpsCounter {
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fn default() -> Self {
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Self::new()
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}
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}
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impl FpsCounter {
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#[must_use]
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pub fn new() -> Self {
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Self {
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mode: String::from(""),
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last_tick_update: Instant::now(),
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tick_count: 0,
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ticks_per_second: 0.0,
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last_frame_update: Instant::now(),
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frame_count: 0,
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frames_per_second: 0.0,
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}
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}
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#[allow(clippy::unnecessary_wraps)]
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fn app_tick(&mut self) -> Result<()> {
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self.tick_count += 1;
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let now = Instant::now();
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let elapsed = (now - self.last_tick_update).as_secs_f64();
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if elapsed >= 1.0 {
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self.ticks_per_second = f64::from(self.tick_count) / elapsed;
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self.last_tick_update = now;
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self.tick_count = 0;
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}
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Ok(())
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}
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#[allow(clippy::unnecessary_wraps)]
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fn render_tick(&mut self) -> Result<()> {
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self.frame_count += 1;
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let now = Instant::now();
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let elapsed = (now - self.last_frame_update).as_secs_f64();
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if elapsed >= 1.0 {
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self.frames_per_second = f64::from(self.frame_count) / elapsed;
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self.last_frame_update = now;
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self.frame_count = 0;
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}
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Ok(())
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}
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}
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impl Component for FpsCounter {
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fn update(&mut self, action: Action) -> Result<Option<Action>> {
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match action {
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Action::SetMode(mode) => {
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self.mode = format!("{:?}", mode);
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}
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Action::Render => self.render_tick()?,
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Action::Tick => self.app_tick()?,
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_ => {}
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};
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Ok(None)
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}
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fn draw(&mut self, frame: &mut Frame, area: Rect) -> Result<()> {
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let [_, row, _] = Layout::vertical([
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Constraint::Length(1),
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Constraint::Length(1),
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Constraint::Min(0),
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])
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.areas(area);
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let [_, left, right, _] = Layout::horizontal([
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Constraint::Length(2),
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Constraint::Min(1),
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Constraint::Min(1),
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Constraint::Length(2),
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])
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.areas(row);
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// Debug
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let span = Span::styled(format!("Mode: {}", &self.mode), Style::new().dim());
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let paragraph = Paragraph::new(span).left_aligned();
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frame.render_widget(paragraph, left);
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// FPS
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let message = format!(
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"{:.2} ticks/sec, {:.2} FPS",
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self.ticks_per_second, self.frames_per_second
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);
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let span = Span::styled(message, Style::new().dim());
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let paragraph = Paragraph::new(span).right_aligned();
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frame.render_widget(paragraph, right);
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Ok(())
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}
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}
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