185 lines
5.0 KiB
Rust
185 lines
5.0 KiB
Rust
//! With this module you can perform actions that are terminal related.
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//! Like clearing and scrolling in the terminal or getting the size of the terminal.
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use super::*;
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use std::fmt;
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use std::io::Write;
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/// Struct that stores an specific platform implementation for terminal related actions.
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///
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/// Check `/examples/version/terminal` in the library for more specific examples.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// term.scroll_down(5);
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/// term.scroll_up(4);
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/// let (with, height) = term.terminal_size();
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///
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/// ```
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pub struct Terminal<'terminal> {
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terminal: Box<ITerminal>,
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screen_manager: &'terminal ScreenManager,
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}
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impl<'terminal> Terminal<'terminal> {
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/// Create new terminal instance whereon terminal related actions can be performed.
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pub fn new(screen_manager: &'terminal ScreenManager) -> Terminal<'terminal> {
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#[cfg(target_os = "windows")]
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let terminal = functions::get_module::<Box<ITerminal>>(
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Box::new(WinApiTerminal::new()),
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Box::new(AnsiTerminal::new()),
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).unwrap();
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#[cfg(not(target_os = "windows"))]
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let terminal = Box::from(AnsiTerminal::new()) as Box<ITerminal>;
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Terminal {
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terminal,
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screen_manager: screen_manager,
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}
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}
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/// Clear the current cursor by specifying the clear type
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// // clear all cells in terminal.
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/// term.clear(terminal::ClearType::All);
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/// // clear all cells from the cursor position downwards in terminal.
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/// term.clear(terminal::ClearType::FromCursorDown);
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/// // clear all cells from the cursor position upwards in terminal.
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/// term.clear(terminal::ClearType::FromCursorUp);
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/// // clear current line cells in terminal.
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/// term.clear(terminal::ClearType::CurrentLine);
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/// // clear all cells from cursor position until new line in terminal.
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/// term.clear(terminal::ClearType::UntilNewLine);
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///
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/// ```
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pub fn clear(&mut self, clear_type: ClearType) {
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self.terminal.clear(clear_type, &mut self.screen_manager);
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}
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/// Get the terminal size (x,y).
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///
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/// #Example
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///
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/// ```rust
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///
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/// extern crate crossterm;
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/// use crossterm::terminal;
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/// use crossterm::Context;
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// let size = term.terminal_size();
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/// println!("{:?}", size);
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///
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/// ```
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pub fn terminal_size(&self) -> (u16, u16) {
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return self.terminal.terminal_size(&self.screen_manager);
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}
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/// Scroll `n` lines up in the current terminal.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// // scroll up by 5 lines
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/// let size = term.scroll_up(5);
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///
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/// ```
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pub fn scroll_up(&self, count: i16) {
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self.terminal.scroll_up(count, &self.screen_manager);
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}
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/// Scroll `n` lines up in the current terminal.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// // scroll down by 5 lines
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/// let size = term.scroll_down(5);
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///
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/// ```
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pub fn scroll_down(&self, count: i16) {
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self.terminal.scroll_down(count, &self.screen_manager);
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}
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/// Set the terminal size. Note that not all terminals can be set to a very small scale.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// // Set of the size to X: 10 and Y: 10
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/// let size = term.set_size(10,10);
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///
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/// ```
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pub fn set_size(&self, width: i16, height: i16) {
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self.terminal.set_size(width, height, &self.screen_manager);
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}
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/// Exit the current process.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// let size = term.exit();
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///
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/// ```
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pub fn exit(&self) {
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self.terminal.exit();
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}
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/// Write any displayable content to the current terminal screen.
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///
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/// #Example
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///
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/// ```rust
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///
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/// let crossterm = Crossterm::new();
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/// let term = crossterm.terminal();
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///
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/// let size = term.write("Some text \n Some text on new line");
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///
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/// ```
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pub fn write<D: fmt::Display>(&self, value: D) {
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use std::fmt::Write;
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let mut string = String::new();
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write!(string, "{}", value).unwrap();
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self.screen_manager.write_string(string);
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}
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}
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/// Get an terminal implementation whereon terminal related actions could performed
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pub fn terminal(screen_manager: &mut ScreenManager) -> Terminal {
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Terminal::new(screen_manager)
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}
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