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#[macro_use]
pub mod macros;
pub mod base64;
pub mod clipboard;
pub mod digraph;
pub mod document;
pub mod editor;
pub mod events;
pub mod graphics;
pub mod gutter;
pub mod handlers;
pub mod info;
pub mod input;
pub mod keyboard;
pub mod register;
pub mod theme;
pub mod tree;
pub mod view;
use std::num::NonZeroUsize;
// uses NonZeroUsize so Option<DocumentId> use a byte rather than two
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
pub struct DocumentId(NonZeroUsize);
impl Default for DocumentId {
fn default() -> DocumentId {
// Safety: 1 is non-zero
DocumentId(unsafe { NonZeroUsize::new_unchecked(1) })
}
}
impl std::fmt::Display for DocumentId {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_fmt(format_args!("{}", self.0))
}
}
slotmap::new_key_type! {
pub struct ViewId;
}
pub enum Align {
Top,
Center,
Bottom,
}
pub fn align_view(doc: &Document, view: &mut View, align: Align) {
let doc_text = doc.text().slice(..);
let cursor = doc.selection(view.id).primary().cursor(doc_text);
let viewport = view.inner_area(doc);
let last_line_height = viewport.height.saturating_sub(1);
let relative = match align {
Align::Center => last_line_height / 2,
Align::Top => 0,
Align::Bottom => last_line_height,
};
let text_fmt = doc.text_format(viewport.width, None);
let annotations = view.text_annotations(doc, None);
(view.offset.anchor, view.offset.vertical_offset) = char_idx_at_visual_offset(
doc_text,
cursor,
-(relative as isize),
0,
&text_fmt,
&annotations,
);
}
pub use document::Document;
pub use editor::Editor;
use helix_core::char_idx_at_visual_offset;
pub use theme::Theme;
pub use view::View;
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