use crate::{

align_view,

annotations::diagnostics::InlineDiagnostics,

editor::{GutterConfig, GutterType},

graphics::Rect,

handlers::diagnostics::DiagnosticsHandler,

use helix_core::{

char_idx_at_visual_offset,

doc_formatter::TextFormat,

text_annotations::TextAnnotations,

visual_offset_from_anchor, visual_offset_from_block, Position, RopeSlice, Selection,

Transaction,

#[derive(Clone)]

pub struct View {

pub id: ViewId,

pub area: Rect,

pub doc: DocumentId,

pub jumps: JumpList,

Self {

id: ViewId::default(),

doc,

area: Rect::default(), // will get calculated upon inserting into tree

jumps: JumpList::new((doc, Selection::point(0))), // TODO: use actual sel

docs_access_history: Vec::new(),

doc: &Document,

scrolloff: usize,

) -> Option<ViewPosition> {

let doc_text = doc.text().slice(..);

let viewport = self.inner_area(doc);

let text_fmt = doc.text_format(viewport.width, None);

let annotations = self.text_annotations(doc, None);

} else {

};

let cursor = doc.selection(self.id).primary().cursor(doc_text);

let off = visual_offset_from_anchor(

doc_text,

offset.anchor,

);

let (new_anchor, at_top) = match off {

if CENTERING {

// cursor out of view

return None;

}

(true, true)

}

(true, false)

}

Ok((_, _)) => (false, false),

if new_anchor {

let v_off = if at_top {

} else {

};

(offset.anchor, offset.vertical_offset) =

char_idx_at_visual_offset(doc_text, cursor, -v_off, 0, &text_fmt, &annotations);

.col;

let last_col = offset.horizontal_offset + viewport.width.saturating_sub(1) as usize;

// scroll right

// scroll left

};

}

// if we are not centering return None if view position is unchanged

return None;

}

Some(offset)

}

if let Some(offset) = self.offset_coords_to_in_view_center::<false>(doc, scrolloff) {

}

}

if let Some(offset) = self.offset_coords_to_in_view_center::<true>(doc, scrolloff) {

} else {

align_view(doc, self, Align::Center);

}

#[inline]

pub fn estimate_last_doc_line(&self, doc: &Document) -> usize {

let doc_text = doc.text().slice(..);

// Saturating subs to make it inclusive zero indexing.

(line + self.inner_height())

.min(doc_text.len_lines())

let viewport = self.inner_area(doc);

let text_fmt = doc.text_format(viewport.width, None);

let annotations = self.text_annotations(doc, None);

// last visual line in view is trivial to compute

// fast path when the EOF is not visible on the screen,

if self.estimate_last_doc_line(doc) < doc_text.len_lines() - 1 {

// translate to document line

let pos = visual_offset_from_anchor(

doc_text,

usize::MAX,

&text_fmt,

&annotations,

);

match pos {

Err(PosAfterMaxRow) => visual_height.saturating_sub(1),

Err(PosBeforeAnchorRow) => 0,

}

text: RopeSlice,

pos: usize,

) -> Option<Position> {

let viewport = self.inner_area(doc);

let text_fmt = doc.text_format(viewport.width, None);

let annotations = self.text_annotations(doc, None);

let mut pos = visual_offset_from_anchor(

text,

pos,

&text_fmt,

&annotations,

)

.ok()?

.0;

return None;

}

if pos.row >= viewport.height as usize {

return None;

}

Some(pos)

}

let mut text_annotations = TextAnnotations::default();

if let Some(labels) = doc.jump_labels.get(&self.id) {

text_annotations.add_overlay(labels, style);

}

padding_after_inlay_hints,

}) = doc.inlay_hints.get(&self.id)

{

// Overlapping annotations are ignored apart from the first so the order here is not random:

// types -> parameters -> others should hopefully be the "correct" order for most use cases,

.add_inline_annotations(padding_after_inlay_hints, None);

};

let config = doc.config.load();

let width = self.inner_width(doc);

let enable_cursor_line = self

.diagnostics_handler

doc,

cursor,

width,

config,

));

}

ignore_virtual_text: bool,

) -> Option<usize> {

let text = doc.text().slice(..);

let (char_idx, virt_lines) = char_idx_at_visual_offset(

text,

text_row as isize,

text_col,

&text_fmt,

use super::*;

use arc_swap::ArcSwap;

// 1 diagnostic + 1 spacer + 3 linenr (< 1000 lines) + 1 spacer + 1 diff

const DEFAULT_GUTTER_OFFSET: u16 = 7;

let mut view = View::new(DocumentId::default(), GutterConfig::default());

view.area = Rect::new(40, 40, 40, 40);

let rope = Rope::from_str("abc\n\tdef");

rope,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

assert_eq!(

view.text_pos_at_screen_coords(

);

view.area = Rect::new(40, 40, 40, 40);

let rope = Rope::from_str("abc\n\tdef");

rope,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

assert_eq!(

view.text_pos_at_screen_coords(

&doc,

);

view.area = Rect::new(40, 40, 40, 40);

let rope = Rope::from_str("abc\n\tdef");

rope,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

assert_eq!(

view.text_pos_at_screen_coords(

&doc,

let mut view = View::new(DocumentId::default(), GutterConfig::default());

view.area = Rect::new(40, 40, 40, 40);

let rope = Rope::from_str("Hi! こんにちは皆さん");

rope,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

assert_eq!(

view.text_pos_at_screen_coords(

let mut view = View::new(DocumentId::default(), GutterConfig::default());

view.area = Rect::new(40, 40, 40, 40);

let rope = Rope::from_str("Hèl̀l̀ò world!");

rope,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

assert_eq!(

view.text_pos_at_screen_coords(