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use crate::compositor::{Component, Context};
use tui::buffer::Buffer as Surface;
use helix_view::graphics::Rect;
pub struct Text {
pub(crate) contents: tui::text::Text<'static>,
size: (u16, u16),
viewport: (u16, u16),
}
impl Text {
pub fn new(contents: String) -> Self {
Self {
contents: tui::text::Text::from(contents),
size: (0, 0),
viewport: (0, 0),
}
}
}
impl From<tui::text::Text<'static>> for Text {
fn from(contents: tui::text::Text<'static>) -> Self {
Self {
contents,
size: (0, 0),
viewport: (0, 0),
}
}
}
impl Component for Text {
fn render(&mut self, area: Rect, surface: &mut Surface, _cx: &mut Context) {
use tui::widgets::{Paragraph, Widget, Wrap};
let par = Paragraph::new(&self.contents).wrap(Wrap { trim: false });
// .scroll(x, y) offsets
par.render(area, surface);
}
fn required_size(&mut self, viewport: (u16, u16)) -> Option<(u16, u16)> {
if viewport != self.viewport {
let width = std::cmp::min(self.contents.width() as u16, viewport.0);
let height = std::cmp::min(self.contents.height() as u16, viewport.1);
self.size = (width, height);
self.viewport = viewport;
}
Some(self.size)
}
}
pub fn required_size(text: &tui::text::Text, max_text_width: u16) -> (u16, u16) {
let mut text_width = 0;
let mut height = 0;
for content in &text.lines {
height += 1;
let content_width = content.width() as u16;
if content_width > max_text_width {
text_width = max_text_width;
height += content_width.checked_div(max_text_width).unwrap_or(0);
} else if content_width > text_width {
text_width = content_width;
}
}
(text_width, height)
}
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