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