test
This commit is contained in:
@@ -25,6 +25,7 @@ cc = "1.0"
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[dependencies]
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crossterm = "0.28.1"
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downcast-rs = "2.0.1"
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[profile.dev]
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opt-level = 1
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-139
@@ -1,139 +0,0 @@
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//! Console module
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//!
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//! This module provides utilities for managing terminal interactions, including event handling,
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//! rendering, and terminal state management.
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use crate::{Element, Frame};
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/// Represents the console state, containing a frame for rendering and a mouse capture flag.
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pub struct Console(Frame, bool);
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/// Enum representing various events that can occur in the console.
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#[derive(Debug, Clone)]
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pub enum Event {
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/// A keyboard event.
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Key(crossterm::event::KeyEvent),
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/// A terminal resize event with new dimensions (width, height).
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Resize(u16, u16),
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/// A mouse event.
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Mouse(crossterm::event::MouseEvent),
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/// A paste event with the pasted content.
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Paste(String),
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/// An event indicating the terminal gained focus.
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FocusGained,
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/// An event indicating the terminal lost focus.
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FocusLost,
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}
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/// Initializes the console with raw mode enabled and optionally mouse capture.
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///
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/// # Arguments
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/// * `mouse` - A boolean flag indicating whether to enable mouse capture.
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///
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/// # Returns
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/// A `Console` instance wrapped in a `Result`.
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pub fn init(mouse: bool) -> crate::Result<Console> {
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crossterm::terminal::enable_raw_mode()?;
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crate::utils::clear()?;
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crate::utils::hide_cursor()?;
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if mouse {
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crossterm::execute!(std::io::stdout(), crossterm::event::EnableMouseCapture)?;
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}
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Ok(Console(Frame::new(crossterm::terminal::size()?), mouse))
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}
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impl Console {
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/// Renders a user interface element with an optional event.
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///
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/// # Arguments
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/// * `ui` - The UI element to render.
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/// * `event` - An optional event to pass to the UI element.
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///
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/// # Returns
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/// A `Result` indicating success or failure.
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pub fn draw(&mut self, ui: Element, event: Option<Event>) -> crate::Result<()> {
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self.0.clear()?;
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ui(&mut self.0, event)
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}
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/// Runs the console loop, rendering the UI and handling events.
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///
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///
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/// # Arguments
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/// * `ui` - The UI element to render.
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///
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/// # Returns
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/// A `Result` indicating success or failure.
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pub fn run(&mut self, ui: Element) -> crate::Result<()> {
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self.draw(ui.clone(), None)?;
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loop {
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let event = read()?;
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if let Event::Resize(w, h) = event {
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self.0.width = w;
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self.0.height = h;
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} else if let Event::Mouse(crossterm::event::MouseEvent {
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kind: crossterm::event::MouseEventKind::Moved,
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row,
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column,
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..
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}) = event
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{
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self.0.mouse_pos = Some((column, row));
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self.draw(ui.clone(), None)?;
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} else {
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self.draw(ui.clone(), Some(event))?;
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}
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}
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}
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/// Ends the console session, restoring the terminal state.
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///
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/// # Returns
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/// A `Result` indicating success or failure.
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pub fn end(&self) -> crate::Result<()> {
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if self.1 {
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crossterm::execute!(std::io::stdout(), crossterm::event::DisableMouseCapture)?;
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}
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crossterm::terminal::disable_raw_mode()?;
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crate::utils::clear()?;
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crate::utils::show_cursor()
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}
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/// Retrieves the current terminal size.
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///
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/// # Returns
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/// A tuple containing the width and height of the terminal.
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pub fn size(&self) -> (u16, u16) {
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(self.0.width, self.0.height)
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}
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}
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/// Reads an event from the terminal.
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///
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/// # Returns
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/// An `Event` wrapped in a `Result`.
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pub fn read() -> crate::Result<Event> {
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let event = crossterm::event::read()?;
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Ok(match event {
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crossterm::event::Event::Key(k) => Event::Key(k),
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crossterm::event::Event::Resize(w, h) => Event::Resize(w, h),
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crossterm::event::Event::FocusGained => Event::FocusGained,
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crossterm::event::Event::FocusLost => Event::FocusLost,
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crossterm::event::Event::Mouse(m) => Event::Mouse(m),
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crossterm::event::Event::Paste(p) => Event::Paste(p),
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})
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}
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/// Attempts to read an event from the terminal without blocking.
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///
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/// # Returns
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/// An `Option` containing an `Event` if one is available.
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pub fn try_read() -> Option<Event> {
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if crossterm::event::poll(std::time::Duration::ZERO).unwrap_or(false) {
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read().ok()
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} else {
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None
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}
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}
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@@ -1,74 +0,0 @@
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use crate::prelude::*;
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impl Widget for &str {
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fn render(&self) -> String {
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self.to_string()
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}
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}
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impl Widget for String {
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fn render(&self) -> String {
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self.clone()
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}
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}
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pub struct Button {
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pub on_click: Box<dyn FnMut()>,
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children: String,
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width: u16,
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height: u16,
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last_elem: (u16, u16),
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}
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pub fn btn() -> Button {
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Button {
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on_click: Box::new(|| {}),
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children: String::new(),
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width: 0,
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height: 0,
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last_elem: (0, 0),
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}
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}
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impl Widget for Button {
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fn render(&self) -> String {
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self.children.clone()
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}
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fn event(&mut self, _: crate::console::Event) {
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(self.on_click)()
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}
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}
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impl Button {
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pub fn draw<W>(&mut self, w: &W, props: crate::Props) -> crate::Result<()>
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where
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W: Widget,
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{
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let written = w.render();
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let (ww, wh) = utils::str_size(&written);
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let (width, height) = (
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props.width.get(ww, self.width),
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props.height.get(wh, self.height),
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);
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let (x, y) = (
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props.x.get(self.last_elem.0, width, self.width),
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props.y.get(self.last_elem.1, height, self.height),
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);
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self.children += written
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.lines()
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.enumerate()
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.filter(|(i, _)| -> bool { height > (*i as u16) })
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.map(|(_, s)| s.chars().take(width as usize).collect::<String>())
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.collect::<Vec<String>>()
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.join("\n")
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.as_str();
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self.last_elem.0 = x + width;
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self.last_elem.1 = y + height;
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Ok(())
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}
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}
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+22
-192
@@ -1,205 +1,35 @@
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//! # Library Documentation
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//! This library provides a framework for creating terminal-based user interfaces.
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//! It includes support for widgets, layouts, and event handling using `crossterm`.
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use std::{any::TypeId, thread, time::Duration};
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//! ## Modules
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//! - `console`: Handles terminal input and events.
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//! - `elements`: Provides pre-defined UI elements. Optional, enabled by default.
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//! - `rsx`: Supports declarative UI definition using an XML-like syntax. Optional, enabled by default.
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//! - `state`: Manages state for widgets and other components.
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//! - `utils`: Utility functions for terminal rendering.
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//! - `prelude`: Exports commonly used types and traits for easy access.
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pub mod output;
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pub mod console;
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#[cfg(not(feature = "no_elem"))]
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pub mod elements;
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#[cfg(not(feature = "no_rsx"))]
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pub mod rsx;
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pub mod state;
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pub mod utils;
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/// Commonly used imports for convenience.
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pub mod prelude {
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pub use crate::console::*;
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pub use crate::elements::*;
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pub use crate::rsx;
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pub use crate::utils;
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pub use crate::{Element, Frame, Pos, Props, Result, Size, Widget};
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pub use crossterm::event::{KeyCode, KeyEvent};
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pub trait Extension {
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fn tick(&mut self, args: &mut Args);
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}
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/// Type alias for simplifying error handling.
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/// Represents an I/O operation result.
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pub use std::io::Result;
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/// Type alias for a UI element.
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/// An `Element` is a thread-safe function that renders onto a `Frame`
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/// and optionally handles events.
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pub type Element = std::sync::Arc<dyn Fn(&mut Frame, Option<console::Event>) -> crate::Result<()>>;
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/// A trait representing a UI widget.
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pub trait Widget {
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/// Renders the widget as a `String`.
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fn render(&self) -> String;
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/// Handles an event for the widget. Defaults to a no-op.
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fn event(&mut self, event: console::Event) {
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_ = event;
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}
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pub trait BaseElement {
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fn init(&mut self);
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fn get_components<'a>(&'a mut self) -> &'a mut Vec<Box<dyn ElementComponent>>;
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}
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/// Struct representing a rectangular props in the terminal.
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#[derive(Debug, Clone, Copy)]
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pub struct Props {
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pub width: Size,
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pub height: Size,
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pub x: Pos,
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pub y: Pos,
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pub trait ElementComponent {
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fn get_type_id(&self) -> TypeId;
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}
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/// Struct representing a rendering frame.
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#[derive(Debug, Default, Clone, Copy)]
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pub struct Frame {
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pub width: u16,
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pub height: u16,
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mouse_pos: Option<(u16, u16)>,
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last_elem: (u16, u16),
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pub struct Args {
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pub tick_rate: u16,
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pub base_elements: Vec<Box<dyn BaseElement>>,
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}
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/// Enum representing positioning options for widgets.
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#[derive(Debug, Clone, Copy)]
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pub enum Pos {
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/// Automatic positioning.
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#[allow(non_camel_case_types)]
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auto,
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/// Centered positioning.
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#[allow(non_camel_case_types)]
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center,
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/// Fixed position as a number of columns or rows.
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Num(u16),
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}
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/// Enum representing sizing options for widgets.
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#[derive(Debug, Clone, Copy)]
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pub enum Size {
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/// Automatic sizing.
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Auto,
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/// Fixed size.
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Num(u16),
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}
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impl Pos {
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/// Calculates the position based on the current frame dimensions.
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pub fn get(self, auto: u16, width: u16, frame: u16) -> u16 {
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match self {
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Self::auto => auto,
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Self::center => (frame - width) / 2,
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Self::Num(n) => n,
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pub fn run(mut args: Args, mut extensions: Vec<Box<dyn Extension>>) {
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for elem in &mut args.base_elements {
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elem.init();
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}
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loop {
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for extension in &mut extensions {
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extension.tick(&mut args);
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}
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thread::sleep(Duration::from_millis(1000 / args.tick_rate as u64));
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}
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}
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impl Size {
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/// Internal method to compute size.
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fn get_(self, written: u16) -> u16 {
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match self {
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Self::Auto => written,
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Self::Num(n) => n,
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}
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}
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/// Computes the size based on written content or frame dimensions.
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pub fn get(self, written: u16, _frame: u16) -> u16 {
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self.get_(written)
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}
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}
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impl Props {
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/// Creates a new `Props` with default values.
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pub fn new() -> Self {
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Self::default()
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}
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}
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impl Default for Props {
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fn default() -> Self {
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Self {
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width: Size::Auto,
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height: Size::Auto,
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x: Pos::Num(0),
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y: Pos::auto,
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}
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}
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}
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impl Frame {
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/// Draws a widget on the frame.
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pub fn draw<W>(&mut self, w: &W, props: Props) -> Result<()>
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where
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W: Widget,
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{
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let written = w.render();
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let (ww, wh) = utils::str_size(&written);
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let (width, height) = (
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props.width.get(ww, self.width),
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props.height.get(wh, self.height),
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);
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let (x, y) = (
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props.x.get(self.last_elem.0, width, self.width),
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props.y.get(self.last_elem.1, height, self.height),
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);
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let ansi = if let Some((mouse_x, mouse_y)) = &self.mouse_pos {
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if (x..x + width).contains(mouse_x) && (y..y + height).contains(mouse_y) {
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"\x1b[32m"
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} else {
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""
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}
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} else {
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""
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};
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for (i, line) in written.lines().enumerate() {
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if i as u16 > height {
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break;
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}
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println!(
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"\x1b[{};{}H{ansi}{}\x1b[0m",
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y + (i as u16) + 1,
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x + 1,
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line.chars().take(width as usize).collect::<String>()
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);
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}
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self.last_elem.0 = x + width;
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self.last_elem.1 = y + height;
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Ok(())
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}
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/// Clears the frame.
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pub fn clear(&mut self) -> Result<()> {
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self.last_elem.0 = 0;
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self.last_elem.1 = 0;
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utils::clear()
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}
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/// Creates a new frame with the specified dimensions.
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pub fn new((width, height): (u16, u16)) -> Self {
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Self {
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width,
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height,
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last_elem: (0, 0),
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mouse_pos: None,
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}
|
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}
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}
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/// Creates a new state object.
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pub fn use_state<T>(v: T) -> state::State<T> {
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state::State(Box::into_raw(Box::new(v)))
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}
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+27
-11
@@ -1,15 +1,31 @@
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use osui::prelude::*;
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use osui::{
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output::{OutputExtension, RenderAble},
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run, Args, BaseElement,
|
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};
|
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|
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fn main() -> Result<()> {
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let mut con = init(true)?;
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pub struct MyElem(*mut Vec<Box<dyn osui::ElementComponent>>);
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impl BaseElement for MyElem {
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fn init(&mut self) {
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unsafe {
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(*self.0).push(RenderAble::new(|| String::from("value")));
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}
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}
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con.run(app())?;
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con.end()
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}
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pub fn app() -> Element {
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rsx! {
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btn { "Click me" } (x-center y-center)
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fn get_components<'a>(&'a mut self) -> &'a mut Vec<Box<dyn osui::ElementComponent>> {
|
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unsafe { &mut *self.0 }
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}
|
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}
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|
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impl MyElem {
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pub fn new(mut v: Vec<Box<dyn osui::ElementComponent>>) -> Box<MyElem> {
|
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Box::new(MyElem(&mut v))
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}
|
||||
}
|
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|
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fn main() {
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let args = Args {
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tick_rate: 40,
|
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base_elements: vec![],
|
||||
};
|
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run(args, vec![Box::new(OutputExtension)]);
|
||||
}
|
||||
|
||||
@@ -0,0 +1,31 @@
|
||||
use std::{any::TypeId, fmt::Debug};
|
||||
|
||||
use crate::{ElementComponent, Extension};
|
||||
|
||||
pub struct OutputExtension;
|
||||
|
||||
impl Extension for OutputExtension {
|
||||
fn tick(&mut self, args: &mut crate::Args) {
|
||||
for elem in &mut args.base_elements {
|
||||
for comp in elem.get_components() {
|
||||
if comp.get_type_id() == TypeId::of::<RenderAble>() {
|
||||
comp
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct RenderAble(pub Box<dyn Fn() -> String>);
|
||||
|
||||
impl ElementComponent for RenderAble {
|
||||
fn get_type_id(&self) -> std::any::TypeId {
|
||||
TypeId::of::<RenderAble>()
|
||||
}
|
||||
}
|
||||
|
||||
impl RenderAble {
|
||||
pub fn new<F: Fn() -> String + 'static>(f: F) -> Box<RenderAble> {
|
||||
Box::new(RenderAble(Box::new(f)))
|
||||
}
|
||||
}
|
||||
-186
@@ -1,186 +0,0 @@
|
||||
/// A brief summary of what the macro does.
|
||||
///
|
||||
/// A detailed explanation about the macro's purpose,
|
||||
/// how it expands, and when to use it.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// Simple
|
||||
/// ```rust
|
||||
/// rsx! {
|
||||
/// "Hello, World!"
|
||||
/// }
|
||||
/// ```
|
||||
///
|
||||
/// Button example
|
||||
/// ```rust
|
||||
/// rsx! {
|
||||
/// button { "{count}" }
|
||||
/// }
|
||||
/// ```
|
||||
#[macro_export]
|
||||
macro_rules! rsx {
|
||||
($($inner:tt)*) => {
|
||||
std::sync::Arc::new(
|
||||
move |frame: &mut $crate::Frame, event: Option<$crate::console::Event>| -> $crate::Result<()> {
|
||||
$crate::rsx_inner!(frame, event; $($inner)*);
|
||||
Ok(())
|
||||
}
|
||||
)
|
||||
};
|
||||
}
|
||||
|
||||
/// # Warning
|
||||
///
|
||||
/// **Don't use this macro manually** use `rsx!` instead
|
||||
#[macro_export]
|
||||
macro_rules! rsx_inner {
|
||||
// Field
|
||||
($frame:expr, $event:expr;
|
||||
$n:ident: $v:expr
|
||||
$(, $($rest:tt)*)?) => {
|
||||
$frame.$n = $v;
|
||||
$crate::rsx_inner!($frame, $event; $($($rest)*)?);
|
||||
};
|
||||
|
||||
// For loop
|
||||
($frame:expr, $event:expr;
|
||||
for ($i:pat in $e:expr) $(%$s:ident),* {$($inner:tt)*}
|
||||
$($rest:tt)*) => {
|
||||
for $i in $e {
|
||||
$(let $s = $s.copy_state();)*
|
||||
$crate::rsx_inner!($frame, $event; $($inner)*);
|
||||
}
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
// If statement
|
||||
($frame:expr, $event:expr;
|
||||
if ($e:expr) $(%$s:ident),* {$($inner:tt)*}
|
||||
$(else if ($ee:expr) {$($elif_inner:tt)*})*
|
||||
else {$($else_inner:tt)*}
|
||||
$($rest:tt)*) => {
|
||||
$(let $s = $s.copy_state();)*
|
||||
if $e {
|
||||
$crate::rsx_inner!($frame, $event; $($inner)*);
|
||||
} $(else if $ee {
|
||||
$crate::rsx_inner!($frame, $event; $($elif_inner)*);
|
||||
})* else {
|
||||
$crate::rsx_inner!($frame, $event; $($else_inner)*);
|
||||
}
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
($frame:expr, $event:expr;
|
||||
if ($e:expr) $(%$s:ident),* {$($inner:tt)*}
|
||||
$($rest:tt)*) => {
|
||||
$(let $s = $s.copy_state();)*
|
||||
if $e {
|
||||
$crate::rsx_inner!($frame, $event; $($inner)*);
|
||||
}
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
// Literal
|
||||
($frame:expr, $event:expr;
|
||||
$elem:literal ($($inner:tt)*)
|
||||
$($rest:tt)*) => {
|
||||
let mut props = $crate::Props::new();
|
||||
$crate::tw_props!(props, $($inner)*);
|
||||
$frame.draw(&format!($elem), props)?;
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
($frame:expr, $event:expr;
|
||||
$elem:literal
|
||||
$($rest:tt)*) => {
|
||||
$frame.draw(&format!($elem), Props::new())?;
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
// Name { rsx } ( props )
|
||||
($frame:expr, $event:expr;
|
||||
$elem:path {
|
||||
$($inner:tt)*
|
||||
} ($($props_inner:tt)*)
|
||||
$($rest:tt)*) => {
|
||||
let mut props = $crate::Props::new();
|
||||
$crate::tw_props!(props, $($props_inner)*);
|
||||
|
||||
let mut e = $elem();
|
||||
$crate::rsx_inner!(e, $event; $($inner)*);
|
||||
|
||||
$frame.draw(&e, props)?;
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
// Name { rsx }
|
||||
($frame:expr, $event:expr;
|
||||
$elem:path {
|
||||
$($inner:tt)*
|
||||
}
|
||||
$($rest:tt)*) => {
|
||||
let mut e = $elem();
|
||||
$crate::rsx_inner!(e, $event; $($inner)*);
|
||||
|
||||
$frame.draw(&e, $crate::Props::new())?;
|
||||
$crate::rsx_inner!($frame, $event; $($rest)*);
|
||||
};
|
||||
|
||||
($frame:expr, $event:expr;) => {};
|
||||
}
|
||||
|
||||
/// # Warning
|
||||
///
|
||||
/// **Don't use this macro manually** use `rsx!` instead
|
||||
#[macro_export]
|
||||
macro_rules! tw_props {
|
||||
($a:expr, $n:ident) => {
|
||||
$a.$n;
|
||||
};
|
||||
|
||||
// X
|
||||
($a:expr, x-$v:ident $($rest:tt)*) => {
|
||||
$a.x = $crate::Pos::$v;
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
($a:expr, x-$v:literal $($rest:tt)*) => {
|
||||
$a.x = $crate::Pos::Num($v);
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
// Y
|
||||
($a:expr, y-$v:ident $($rest:tt)*) => {
|
||||
$a.y = $crate::Pos::$v;
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
($a:expr, y-$v:literal $($rest:tt)*) => {
|
||||
$a.y = $crate::Pos::Num($v);
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
// Width
|
||||
($a:expr, width-$v:ident $($rest:tt)*) => {
|
||||
$a.width = $crate::Size::$v;
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
($a:expr, width-$v:literal $($rest:tt)*) => {
|
||||
$a.width = $crate::Size::Num($v);
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
// Height
|
||||
($a:expr, height-$v:ident $($rest:tt)*) => {
|
||||
$a.height = $crate::Size::$v;
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
($a:expr, height-$v:literal $($rest:tt)*) => {
|
||||
$a.height = $crate::Size::Num($v);
|
||||
$crate::tw_props!($a, $($rest)*);
|
||||
};
|
||||
|
||||
($a:expr,) => {};
|
||||
}
|
||||
-114
@@ -1,114 +0,0 @@
|
||||
//! The `state` module provides the `State` type for managing mutable state across UI components
|
||||
//! and operations. It wraps a raw pointer to enable shared mutability and integrates with common
|
||||
//! traits for ease of use.
|
||||
|
||||
/// A wrapper around a raw pointer to a mutable value, allowing shared state management.
|
||||
///
|
||||
/// # Safety
|
||||
/// This type uses unsafe code to dereference raw pointers. Proper care must be taken
|
||||
/// to ensure the validity and lifetime of the referenced value.
|
||||
///
|
||||
/// # Examples
|
||||
/// ```
|
||||
/// let value = 42;
|
||||
/// let state = State(Box::into_raw(Box::new(value)));
|
||||
/// assert_eq!(*state, 42);
|
||||
/// ```
|
||||
#[derive(Clone, Copy)]
|
||||
pub struct State<T>(pub(crate) *mut T);
|
||||
|
||||
impl<T: std::fmt::Display> std::fmt::Display for State<T> {
|
||||
/// Formats the value of the state for display.
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "{}", unsafe { &*self.0 })
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: std::fmt::Debug> std::fmt::Debug for State<T> {
|
||||
/// Formats the state for debugging purposes.
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "State({:?})", unsafe { &*self.0 })
|
||||
}
|
||||
}
|
||||
|
||||
//// State Operations ////
|
||||
|
||||
impl<T: std::ops::Add<Output = T> + Clone> std::ops::Add<T> for State<T> {
|
||||
type Output = T;
|
||||
|
||||
/// Adds a value to the state, returning the result.
|
||||
fn add(self, rhs: T) -> Self::Output {
|
||||
unsafe {
|
||||
let lhs = &mut *self.0;
|
||||
lhs.clone() + rhs
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: std::ops::Sub<Output = T> + Clone> std::ops::Sub<T> for State<T> {
|
||||
type Output = T;
|
||||
|
||||
/// Subtracts a value from the state, returning the result.
|
||||
fn sub(self, rhs: T) -> Self::Output {
|
||||
unsafe {
|
||||
let lhs = &mut *self.0;
|
||||
lhs.clone() - rhs
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: std::ops::Div<Output = T> + Clone> std::ops::Div<T> for State<T> {
|
||||
type Output = T;
|
||||
|
||||
/// Divides the state by a value, returning the result.
|
||||
fn div(self, rhs: T) -> Self::Output {
|
||||
unsafe {
|
||||
let lhs = &mut *self.0;
|
||||
lhs.clone() / rhs
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: std::ops::AddAssign + Clone> std::ops::AddAssign<T> for State<T> {
|
||||
/// Adds a value to the state in place.
|
||||
fn add_assign(&mut self, rhs: T) {
|
||||
unsafe { *self.0 += rhs }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: std::ops::SubAssign + Clone> std::ops::SubAssign<T> for State<T> {
|
||||
/// Subtracts a value from the state in place.
|
||||
fn sub_assign(&mut self, rhs: T) {
|
||||
unsafe { *self.0 -= rhs }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> std::ops::Deref for State<T> {
|
||||
type Target = T;
|
||||
|
||||
/// Dereferences the state to access the underlying value.
|
||||
fn deref(&self) -> &Self::Target {
|
||||
unsafe { &*self.0 }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> std::ops::DerefMut for State<T> {
|
||||
/// Dereferences the state to access the underlying mutable value.
|
||||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||
unsafe { &mut *self.0 }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> State<T> {
|
||||
/// Returns a copy of the current state.
|
||||
pub fn copy_state(&self) -> Self {
|
||||
Self(self.0)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: PartialEq<T>> PartialEq<T> for State<T> {
|
||||
/// Compares the state with another value for equality.
|
||||
fn eq(&self, other: &T) -> bool {
|
||||
unsafe { &*self.0 == other }
|
||||
}
|
||||
}
|
||||
@@ -1,94 +0,0 @@
|
||||
//! The `utils` module provides utility functions for terminal manipulation
|
||||
//! and string operations, designed to enhance terminal-based applications.
|
||||
|
||||
use std::io::Write;
|
||||
|
||||
/// Clears the terminal screen and moves the cursor to the top-left corner.
|
||||
///
|
||||
/// # Returns
|
||||
/// A `crate::Result<()>` indicating whether the operation succeeded.
|
||||
///
|
||||
/// # Example
|
||||
/// ```
|
||||
/// utils::clear().unwrap();
|
||||
/// ```
|
||||
pub fn clear() -> crate::Result<()> {
|
||||
print!("\x1B[2J\x1B[H");
|
||||
std::io::stdout().flush()
|
||||
}
|
||||
|
||||
/// Hides the terminal cursor.
|
||||
///
|
||||
/// # Returns
|
||||
/// A `crate::Result<()>` indicating whether the operation succeeded.
|
||||
///
|
||||
/// # Example
|
||||
/// ```
|
||||
/// utils::hide_cursor().unwrap();
|
||||
/// ```
|
||||
pub fn hide_cursor() -> crate::Result<()> {
|
||||
print!("\x1b[?25l");
|
||||
std::io::stdout().flush()
|
||||
}
|
||||
|
||||
/// Shows the terminal cursor.
|
||||
///
|
||||
/// # Returns
|
||||
/// A `crate::Result<()>` indicating whether the operation succeeded.
|
||||
///
|
||||
/// # Example
|
||||
/// ```
|
||||
/// utils::show_cursor().unwrap();
|
||||
/// ```
|
||||
pub fn show_cursor() -> crate::Result<()> {
|
||||
print!("\x1B[?25h");
|
||||
std::io::stdout().flush()
|
||||
}
|
||||
|
||||
/// Flushes the terminal's stdout buffer.
|
||||
///
|
||||
/// # Returns
|
||||
/// A `crate::Result<()>` indicating whether the operation succeeded.
|
||||
///
|
||||
/// # Example
|
||||
/// ```
|
||||
/// utils::flush().unwrap();
|
||||
/// ```
|
||||
pub fn flush() -> crate::Result<()> {
|
||||
std::io::stdout().flush()
|
||||
}
|
||||
|
||||
/// Calculates the width and height of a string when rendered in a terminal.
|
||||
///
|
||||
/// # Arguments
|
||||
/// - `s`: The input string.
|
||||
///
|
||||
/// # Returns
|
||||
/// A tuple `(u16, u16)` where:
|
||||
/// - The first value is the maximum width of the string in characters.
|
||||
/// - The second value is the height of the string in lines.
|
||||
///
|
||||
/// # Example
|
||||
/// ```
|
||||
/// let (width, height) = utils::str_size("Hello\nWorld!");
|
||||
/// assert_eq!((5, 2), (width, height));
|
||||
/// ```
|
||||
pub fn str_size(s: &str) -> (u16, u16) {
|
||||
let mut height = 1;
|
||||
let mut max_width = 0;
|
||||
let mut current_width = 0;
|
||||
|
||||
for b in s.bytes() {
|
||||
if b == b'\n' {
|
||||
height += 1;
|
||||
max_width = max_width.max(current_width);
|
||||
current_width = 0;
|
||||
} else {
|
||||
current_width += 1;
|
||||
}
|
||||
}
|
||||
|
||||
max_width = max_width.max(current_width);
|
||||
|
||||
(max_width, height)
|
||||
}
|
||||
Reference in New Issue
Block a user