207 lines
5.8 KiB
Rust
207 lines
5.8 KiB
Rust
use termion::{clear, cursor, raw::RawTerminal};
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const ESTIMATED_FRAME_BIT_SIZE: usize = 11;
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use std::io::{Stdout, Write};
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use super::theme::{ColorSet, Theme};
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const FRAME_CHAR_HORIZONTAL: char = ' ';
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const FRAME_CHAR_VERTICAL: char = ' ';
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pub enum FrameSize {
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ByAbsolute(u16, u16),
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ByPercent(u16, u16),
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}
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#[derive(Debug, Clone, Copy)]
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pub struct Frame {
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// Both are (w, h)
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start: (u16, u16),
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end: (u16, u16),
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width: u16,
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theme: ColorSet,
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}
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impl Frame {
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#[inline(always)]
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pub fn sub(
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&self,
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theme: ColorSet,
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size: FrameSize,
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width: u16,
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) -> Frame {
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let (p_width, p_height) = self.size();
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size.abs_size((p_width - 1, p_height - 1), theme, width)
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}
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#[inline(always)]
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pub fn goto(&self, x: u16, y: u16) -> String {
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let cg = cursor::Goto(
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self.width.max(
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(self.width + self.start.0 + x)
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.min(self.end.0 - self.width),
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),
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self.width.max(
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(self.width + self.start.1 + y)
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.min(self.end.1 - self.width),
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),
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);
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cg.into()
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}
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#[inline(always)]
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fn goto_internal(&self, x: u16, y: u16) -> String {
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cursor::Goto(
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(self.start.0 + x).min(self.end.0),
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(self.start.1 + y).min(self.end.1),
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)
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.into()
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}
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#[inline(always)]
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fn write_clear_to_end(&self, s: &str) -> String {
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let clear_length = self.size().0 as usize
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- s.len()
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- (self.width * 2) as usize;
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format!("{}{}", s, " ".repeat(clear_length))
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}
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pub fn writeln(&self, s: &str, x: u16, y: u16) -> String {
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let words = s.split('\n').collect::<Vec<&str>>();
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let mut out_words = Vec::with_capacity(words.len());
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for i in 0..words.len() {
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out_words.push(format!(
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"{ret}{str}",
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str = self.write_clear_to_end(words[i]),
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ret = self.goto(x, y + i as u16),
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));
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}
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out_words.concat()
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}
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#[inline(always)]
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fn write_frame_line(&self, y: u16, length: u16) -> String {
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self.goto_internal(0, y)
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+ &FRAME_CHAR_HORIZONTAL
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.to_string()
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.repeat(length as usize)
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}
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pub fn write_centered(&self, s: &str, y: u16) -> String {
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let (width, _) = self.size();
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let words = s.split('\n').collect::<Vec<&str>>();
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let mut out_words = Vec::with_capacity(words.len());
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for i in 0..words.len() {
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let word = words[i];
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let x = width - (word.len() as u16).min(width);
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out_words.push(format!(
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"{ret}{str}",
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str = word,
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ret = self.goto(x / 2, y + i as u16),
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));
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}
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out_words.concat()
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}
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#[inline(always)]
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pub fn size(&self) -> (u16, u16) {
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(self.end.0 - self.start.0, self.end.1 - self.start.1)
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}
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#[inline(always)]
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pub fn from_terminal_size(
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theme: ColorSet,
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width: u16,
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) -> Result<Self, anyhow::Error> {
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let term = termion::terminal_size()?;
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// Swap term dimensions to use x/y
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// let term = (term.1, term.0);
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Ok(Self::from_bottom_right(term, term, width, theme))
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}
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#[inline(always)]
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fn from_bottom_right(
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(pos_w, pos_h): (u16, u16),
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(term_w, term_h): (u16, u16),
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width: u16,
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theme: ColorSet,
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) -> Self {
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Self {
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start: (1.max(term_w - pos_w), 1.max(term_h - pos_h)),
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end: (pos_w, pos_h),
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width,
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theme,
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}
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}
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pub fn frame_str(&self, body_theme: String) -> String {
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if self.width == 0 {
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return body_theme + &clear::All.to_string();
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}
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self.goto_internal(0, 0);
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let (w_len, h_len) = self.size();
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let width_str = FRAME_CHAR_HORIZONTAL
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.to_string()
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.repeat(w_len as usize + 1);
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let mut frame = Vec::with_capacity(h_len as usize + 4);
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let frame_theme = self.theme.to_string();
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let body_clear =
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body_theme.clone() + &" ".repeat(w_len as usize);
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frame.push(self.theme.to_string());
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for y in 0..self.width {
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frame.push(self.write_frame_line(y, w_len));
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}
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for y in self.width..h_len - self.width {
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frame.push(format!(
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"{left}{body_clear}{frame_theme}{left}{char}{right}{char}",
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body_clear = &body_clear,
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frame_theme = &frame_theme,
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left = self.goto_internal(0, y),
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right = self.goto_internal(w_len - self.width, y),
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char = FRAME_CHAR_VERTICAL
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.to_string()
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.repeat(self.width as usize),
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));
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}
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for y in h_len - self.width..h_len {
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frame.push(self.write_frame_line(y, w_len));
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}
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frame.push(self.goto(0, 0));
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frame.push(body_theme);
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frame.concat()
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}
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}
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impl FrameSize {
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#[inline(always)]
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fn abs_size(
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&self,
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(term_width, term_height): (u16, u16),
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theme: ColorSet,
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width: u16,
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) -> Frame {
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let pos = match self {
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FrameSize::ByAbsolute(h, w) => {
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((*w).min(term_width), (*h).min(term_height))
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}
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FrameSize::ByPercent(h, w) => {
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// term_height = 100%
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// x = h%
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//
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// term_height * h / 100 = x
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(
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term_width * (*w).min(100) / 100,
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term_height * (*h).min(100) / 100,
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)
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}
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};
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Frame::from_bottom_right(
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pos,
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(term_width, term_height),
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width,
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theme,
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)
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}
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}
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