diff options
Diffstat (limited to 'helix-term/src/ui')
| -rw-r--r-- | helix-term/src/ui/completion.rs | 8 | ||||
| -rw-r--r-- | helix-term/src/ui/editor.rs | 95 |
2 files changed, 65 insertions, 38 deletions
diff --git a/helix-term/src/ui/completion.rs b/helix-term/src/ui/completion.rs index be6db42c..942a2483 100644 --- a/helix-term/src/ui/completion.rs +++ b/helix-term/src/ui/completion.rs @@ -86,7 +86,7 @@ impl Completion { let item = item.unwrap(); // if more text was entered, remove it - let cursor = doc.selection(view.id).cursor(); + let cursor = doc.selection(view.id).cursor(doc.text().slice(..)); if trigger_offset < cursor { let remove = Transaction::change( doc.text(), @@ -109,7 +109,7 @@ impl Completion { ) } else { let text = item.insert_text.as_ref().unwrap_or(&item.label); - let cursor = doc.selection(view.id).cursor(); + let cursor = doc.selection(view.id).cursor(doc.text().slice(..)); Transaction::change( doc.text(), vec![(cursor, cursor, Some(text.as_str().into()))].into_iter(), @@ -155,7 +155,7 @@ impl Completion { // TODO: hooks should get processed immediately so maybe do it after select!(), before // looping? - let cursor = doc.selection(view.id).cursor(); + let cursor = doc.selection(view.id).cursor(doc.text().slice(..)); if self.trigger_offset <= cursor { let fragment = doc.text().slice(self.trigger_offset..cursor); let text = Cow::from(fragment); @@ -212,7 +212,7 @@ impl Component for Completion { .language() .and_then(|scope| scope.strip_prefix("source.")) .unwrap_or(""); - let cursor_pos = doc.selection(view.id).cursor(); + let cursor_pos = doc.selection(view.id).cursor(doc.text().slice(..)); let cursor_pos = (helix_core::coords_at_pos(doc.text().slice(..), cursor_pos).row - view.first_line) as u16; diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs index 9a2fbf57..8e29be6c 100644 --- a/helix-term/src/ui/editor.rs +++ b/helix-term/src/ui/editor.rs @@ -8,7 +8,7 @@ use crate::{ use helix_core::{ coords_at_pos, - graphemes::{ensure_grapheme_boundary, next_grapheme_boundary}, + graphemes::{ensure_grapheme_boundary_next, next_grapheme_boundary, prev_grapheme_boundary}, syntax::{self, HighlightEvent}, LineEnding, Position, Range, }; @@ -161,8 +161,8 @@ impl EditorView { let highlights = highlights.into_iter().map(|event| match event.unwrap() { // convert byte offsets to char offset HighlightEvent::Source { start, end } => { - let start = ensure_grapheme_boundary(text, text.byte_to_char(start)); - let end = ensure_grapheme_boundary(text, text.byte_to_char(end)); + let start = ensure_grapheme_boundary_next(text, text.byte_to_char(start)); + let end = ensure_grapheme_boundary_next(text, text.byte_to_char(end)); HighlightEvent::Source { start, end } } event => event, @@ -186,21 +186,18 @@ impl EditorView { } .unwrap_or(base_cursor_scope); - let primary_selection_scope = theme - .find_scope_index("ui.selection.primary") - .unwrap_or(selection_scope); - let highlights: Box<dyn Iterator<Item = HighlightEvent>> = if is_focused { - // inject selections as highlight scopes - let mut spans: Vec<(usize, std::ops::Range<usize>)> = Vec::new(); - // TODO: primary + insert mode patching: // (ui.cursor.primary).patch(mode).unwrap_or(cursor) - let primary_cursor_scope = theme .find_scope_index("ui.cursor.primary") .unwrap_or(cursor_scope); + let primary_selection_scope = theme + .find_scope_index("ui.selection.primary") + .unwrap_or(selection_scope); + // inject selections as highlight scopes + let mut spans: Vec<(usize, std::ops::Range<usize>)> = Vec::new(); for (i, range) in selections.iter().enumerate() { let (cursor_scope, selection_scope) = if i == primary_idx { (primary_cursor_scope, primary_selection_scope) @@ -208,24 +205,23 @@ impl EditorView { (cursor_scope, selection_scope) }; - let cursor_end = next_grapheme_boundary(text, range.head); // Used in every case below. - - if range.head == range.anchor { - spans.push((cursor_scope, range.head..cursor_end)); + // Special-case: cursor at end of the rope. + if range.head == range.anchor && range.head == text.len_chars() { + spans.push((cursor_scope, range.head..range.head + 1)); continue; } - let reverse = range.head < range.anchor; - - if reverse { - spans.push((cursor_scope, range.head..cursor_end)); - spans.push(( - selection_scope, - cursor_end..next_grapheme_boundary(text, range.anchor), - )); + let range = range.min_width_1(text); + if range.head > range.anchor { + // Standard case. + let cursor_start = prev_grapheme_boundary(text, range.head); + spans.push((selection_scope, range.anchor..cursor_start)); + spans.push((cursor_scope, cursor_start..range.head)); } else { - spans.push((selection_scope, range.anchor..range.head)); + // Reverse case. + let cursor_end = next_grapheme_boundary(text, range.head); spans.push((cursor_scope, range.head..cursor_end)); + spans.push((selection_scope, cursor_end..range.anchor)); } } @@ -258,7 +254,10 @@ impl EditorView { spans.pop(); } HighlightEvent::Source { start, end } => { - let text = text.slice(start..end); + // `unwrap_or_else` part is for off-the-end indices of + // the rope, to allow cursor highlighting at the end + // of the rope. + let text = text.get_slice(start..end).unwrap_or_else(|| " ".into()); use helix_core::graphemes::{grapheme_width, RopeGraphemes}; @@ -327,7 +326,11 @@ impl EditorView { let info: Style = theme.get("info"); let hint: Style = theme.get("hint"); - for (i, line) in (view.first_line..last_line).enumerate() { + // Whether to draw the line number for the last line of the + // document or not. We only draw it if it's not an empty line. + let draw_last = text.line_to_byte(last_line) < text.len_bytes(); + + for (i, line) in (view.first_line..(last_line + 1)).enumerate() { use helix_core::diagnostic::Severity; if let Some(diagnostic) = doc.diagnostics().iter().find(|d| d.line == line) { surface.set_stringn( @@ -344,11 +347,17 @@ impl EditorView { ); } - // line numbers having selections are rendered differently + // Line numbers having selections are rendered + // differently, further below. + let line_number_text = if line == last_line && !draw_last { + " ~".into() + } else { + format!("{:>5}", line + 1) + }; surface.set_stringn( viewport.x + 1 - OFFSET, viewport.y + i as u16, - format!("{:>5}", line + 1), + line_number_text, 5, linenr, ); @@ -362,19 +371,34 @@ impl EditorView { if is_focused { let screen = { let start = text.line_to_char(view.first_line); - let end = text.line_to_char(last_line + 1); + let end = text.line_to_char(last_line + 1) + 1; // +1 for cursor at end of text. Range::new(start, end) }; let selection = doc.selection(view.id); for selection in selection.iter().filter(|range| range.overlaps(&screen)) { - let head = view.screen_coords_at_pos(doc, text, selection.head); + let head = view.screen_coords_at_pos( + doc, + text, + if selection.head > selection.anchor { + selection.head - 1 + } else { + selection.head + }, + ); if let Some(head) = head { + // Draw line number for selected lines. + let line_number = view.first_line + head.row; + let line_number_text = if line_number == last_line && !draw_last { + " ~".into() + } else { + format!("{:>5}", line_number + 1) + }; surface.set_stringn( viewport.x + 1 - OFFSET, viewport.y + head.row as u16, - format!("{:>5}", view.first_line + head.row + 1), + line_number_text, 5, linenr_select, ); @@ -382,7 +406,7 @@ impl EditorView { // TODO: set cursor position for IME if let Some(syntax) = doc.syntax() { use helix_core::match_brackets; - let pos = doc.selection(view.id).cursor(); + let pos = doc.selection(view.id).cursor(doc.text().slice(..)); let pos = match_brackets::find(syntax, doc.text(), pos) .and_then(|pos| view.screen_coords_at_pos(doc, text, pos)); @@ -427,7 +451,7 @@ impl EditorView { widgets::{Paragraph, Widget}, }; - let cursor = doc.selection(view.id).cursor(); + let cursor = doc.selection(view.id).cursor(doc.text().slice(..)); let diagnostics = doc.diagnostics().iter().filter(|diagnostic| { diagnostic.range.start <= cursor && diagnostic.range.end >= cursor @@ -539,7 +563,10 @@ impl EditorView { // _ => "indent:ERROR", // }; let position_info = { - let pos = coords_at_pos(doc.text().slice(..), doc.selection(view.id).cursor()); + let pos = coords_at_pos( + doc.text().slice(..), + doc.selection(view.id).cursor(doc.text().slice(..)), + ); format!("{}:{}", pos.row + 1, pos.col + 1) // convert to 1-indexing }; |