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use std::io::Write;
use crossterm::{
cursor,
terminal::{Clear, ClearType},
queue,
};
use termimad::{Area, CompoundStyle, InputField};
use crate::{
app::W,
app_context::AppContext,
errors::ProgramError,
skin::Skin,
};
pub struct Screen {
pub width: u16,
pub height: u16,
pub skin: Skin,
pub input_field: InputField,
}
impl Screen {
pub fn new(con: &AppContext, skin: Skin) -> Result<Screen, ProgramError> {
let mut input_field = InputField::new(Area::new(0, 0, 10, 1));
input_field.set_normal_style(CompoundStyle::from(skin.input.clone()));
let mut screen = Screen {
width: 0,
height: 0,
skin,
input_field,
};
screen.read_size(con)?;
Ok(screen)
}
pub fn read_size(&mut self, con: &AppContext) -> Result<(), ProgramError> {
let (w, h) = termimad::terminal_size();
self.width = w;
self.height = h;
if let Some(h) = con.launch_args.height {
self.height = h;
}
debug!("screen size: {} x {}", self.width, self.height);
self.input_field.change_area(0, h-1, w - 15);
debug!("input_field area: {:?}", self.input_field.area);
Ok(())
}
/// move the cursor to x,y and clears the line.
pub fn goto_clear(&self, w: &mut W, x: u16, y: u16)
-> Result<(), ProgramError> {
self.goto(w, x, y)?;
self.clear_line(w)
}
/// move the cursor to x,y
pub fn goto(
&self,
w: &mut W,
x: u16,
y: u16
) -> Result<(), ProgramError> {
queue!(w, cursor::MoveTo(x, y))?;
Ok(())
}
/// clear the whole screen
pub fn clear(&self, w: &mut W) -> Result<(), ProgramError> {
queue!(w, Clear(ClearType::All))?;
Ok(())
}
/// clear from the cursor to the end of line
pub fn clear_line(&self, w: &mut W) -> Result<(), ProgramError> {
queue!(w, Clear(ClearType::UntilNewLine))?;
Ok(())
}
}
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