1057 lines
42 KiB
Rust
1057 lines
42 KiB
Rust
use alloc::{collections::BTreeMap, string::String};
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use core::cmp;
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use modit::{Event, Key, Motion, Parser, TextObject, WordIter};
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use unicode_segmentation::UnicodeSegmentation;
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use crate::{
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Action, AttrsList, BorrowedWithFontSystem, Buffer, Change, Color, Cursor, Edit, FontSystem,
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Selection, SyntaxEditor, SyntaxTheme,
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};
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pub use modit::{ViMode, ViParser};
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fn undo_2_action<E: Edit>(editor: &mut E, action: cosmic_undo_2::Action<&Change>) {
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match action {
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cosmic_undo_2::Action::Do(change) => {
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editor.apply_change(change);
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}
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cosmic_undo_2::Action::Undo(change) => {
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//TODO: make this more efficient
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let mut reversed = change.clone();
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reversed.reverse();
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editor.apply_change(&reversed);
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}
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}
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}
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fn finish_change<E: Edit>(
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editor: &mut E,
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commands: &mut cosmic_undo_2::Commands<Change>,
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changed: &mut bool,
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) -> Option<Change> {
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//TODO: join changes together
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match editor.finish_change() {
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Some(change) => {
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if !change.items.is_empty() {
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commands.push(change.clone());
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*changed = true;
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}
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Some(change)
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}
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None => None,
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}
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}
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fn search<E: Edit>(editor: &mut E, value: &str, forwards: bool) -> bool {
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let mut cursor = editor.cursor();
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let start_line = cursor.line;
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if forwards {
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while cursor.line < editor.buffer().lines.len() {
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if let Some(index) = editor.buffer().lines[cursor.line]
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.text()
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.match_indices(value)
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.filter_map(|(i, _)| {
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if cursor.line != start_line || i > cursor.index {
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Some(i)
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} else {
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None
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}
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})
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.next()
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{
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cursor.index = index;
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editor.set_cursor(cursor);
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return true;
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}
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cursor.line += 1;
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}
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} else {
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cursor.line += 1;
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while cursor.line > 0 {
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cursor.line -= 1;
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if let Some(index) = editor.buffer().lines[cursor.line]
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.text()
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.rmatch_indices(value)
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.filter_map(|(i, _)| {
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if cursor.line != start_line || i < cursor.index {
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Some(i)
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} else {
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None
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}
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})
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.next()
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{
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cursor.index = index;
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editor.set_cursor(cursor);
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return true;
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}
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}
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}
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false
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}
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fn select_in<E: Edit>(editor: &mut E, start_c: char, end_c: char, include: bool) {
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// Find the largest encompasing object, or if there is none, find the next one.
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let cursor = editor.cursor();
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let buffer = editor.buffer();
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// Search forwards for isolated end character, counting start and end characters found
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let mut end = cursor;
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let mut starts = 0;
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let mut ends = 0;
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'find_end: loop {
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let line = &buffer.lines[end.line];
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let text = line.text();
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for (i, c) in text[end.index..].char_indices() {
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if c == end_c {
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ends += 1;
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} else if c == start_c {
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starts += 1;
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}
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if ends > starts {
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end.index += if include { i + c.len_utf8() } else { i };
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break 'find_end;
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}
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}
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if end.line + 1 < buffer.lines.len() {
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end.line += 1;
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end.index = 0;
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} else {
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break 'find_end;
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}
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}
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// Search backwards to resolve starts and ends
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let mut start = cursor;
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'find_start: loop {
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let line = &buffer.lines[start.line];
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let text = line.text();
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for (i, c) in text[..start.index].char_indices().rev() {
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if c == start_c {
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starts += 1;
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} else if c == end_c {
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ends += 1;
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}
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if starts >= ends {
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start.index = if include { i } else { i + c.len_utf8() };
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break 'find_start;
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}
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}
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if start.line > 0 {
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start.line -= 1;
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start.index = buffer.lines[start.line].text().len();
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} else {
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break 'find_start;
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}
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}
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editor.set_selection(Selection::Normal(start));
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editor.set_cursor(end);
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}
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#[derive(Debug)]
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pub struct ViEditor<'a> {
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editor: SyntaxEditor<'a>,
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parser: ViParser,
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passthrough: bool,
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registers: BTreeMap<char, (Selection, String)>,
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search_opt: Option<(String, bool)>,
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commands: cosmic_undo_2::Commands<Change>,
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changed: bool,
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}
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impl<'a> ViEditor<'a> {
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pub fn new(editor: SyntaxEditor<'a>) -> Self {
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Self {
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editor,
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parser: ViParser::new(),
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passthrough: false,
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registers: BTreeMap::new(),
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search_opt: None,
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commands: cosmic_undo_2::Commands::new(),
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changed: false,
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}
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}
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/// Modifies the theme of the [`SyntaxEditor`], returning false if the theme is missing
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pub fn update_theme(&mut self, theme_name: &str) -> bool {
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self.editor.update_theme(theme_name)
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}
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/// Load text from a file, and also set syntax to the best option
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#[cfg(feature = "std")]
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pub fn load_text<P: AsRef<std::path::Path>>(
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&mut self,
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font_system: &mut FontSystem,
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path: P,
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attrs: crate::Attrs,
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) -> std::io::Result<()> {
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self.editor.load_text(font_system, path, attrs)
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}
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/// Get the default background color
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pub fn background_color(&self) -> Color {
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self.editor.background_color()
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}
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/// Get the default foreground (text) color
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pub fn foreground_color(&self) -> Color {
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self.editor.foreground_color()
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}
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/// Get the current syntect theme
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pub fn theme(&self) -> &SyntaxTheme {
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self.editor.theme()
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}
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/// Get changed flag
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pub fn changed(&self) -> bool {
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self.changed
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}
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/// Set changed flag
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pub fn set_changed(&mut self, changed: bool) {
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self.changed = changed;
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}
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/// Set passthrough mode (true will turn off vi features)
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pub fn set_passthrough(&mut self, passthrough: bool) {
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if passthrough != self.passthrough {
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self.passthrough = passthrough;
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self.buffer_mut().set_redraw(true);
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}
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}
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/// Get current vi parser
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pub fn parser(&self) -> &ViParser {
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&self.parser
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}
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/// Redo a change
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pub fn redo(&mut self) {
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log::debug!("Redo");
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for action in self.commands.redo() {
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undo_2_action(&mut self.editor, action);
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//TODO: clear changed flag when back to last saved state?
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self.changed = true;
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}
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}
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/// Undo a change
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pub fn undo(&mut self) {
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log::debug!("Undo");
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for action in self.commands.undo() {
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undo_2_action(&mut self.editor, action);
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//TODO: clear changed flag when back to last saved state?
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self.changed = true;
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}
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}
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}
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impl<'a> Edit for ViEditor<'a> {
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fn buffer(&self) -> &Buffer {
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self.editor.buffer()
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}
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fn buffer_mut(&mut self) -> &mut Buffer {
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self.editor.buffer_mut()
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}
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fn cursor(&self) -> Cursor {
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self.editor.cursor()
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}
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fn set_cursor(&mut self, cursor: Cursor) {
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self.editor.set_cursor(cursor);
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}
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fn selection(&self) -> Selection {
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self.editor.selection()
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}
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fn set_selection(&mut self, selection: Selection) {
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self.editor.set_selection(selection);
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}
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fn auto_indent(&self) -> bool {
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self.editor.auto_indent()
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}
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fn set_auto_indent(&mut self, auto_indent: bool) {
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self.editor.set_auto_indent(auto_indent);
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}
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fn tab_width(&self) -> u16 {
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self.editor.tab_width()
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}
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fn set_tab_width(&mut self, tab_width: u16) {
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self.editor.set_tab_width(tab_width);
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}
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fn shape_as_needed(&mut self, font_system: &mut FontSystem) {
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self.editor.shape_as_needed(font_system);
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}
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fn delete_range(&mut self, start: Cursor, end: Cursor) {
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self.editor.delete_range(start, end);
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}
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fn insert_at(&mut self, cursor: Cursor, data: &str, attrs_list: Option<AttrsList>) -> Cursor {
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self.editor.insert_at(cursor, data, attrs_list)
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}
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fn copy_selection(&self) -> Option<String> {
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self.editor.copy_selection()
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}
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fn delete_selection(&mut self) -> bool {
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self.editor.delete_selection()
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}
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fn apply_change(&mut self, change: &Change) -> bool {
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self.editor.apply_change(change)
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}
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fn start_change(&mut self) {
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self.editor.start_change();
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}
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fn finish_change(&mut self) -> Option<Change> {
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finish_change(&mut self.editor, &mut self.commands, &mut self.changed)
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}
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fn action(&mut self, font_system: &mut FontSystem, action: Action) {
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log::debug!("Action {:?}", action);
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let editor = &mut self.editor;
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// Ensure a change is always started
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editor.start_change();
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if self.passthrough {
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editor.action(font_system, action);
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// Always finish change when passing through (TODO: group changes)
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finish_change(editor, &mut self.commands, &mut self.changed);
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return;
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}
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let key = match action {
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//TODO: this leaves lots of room for issues in translation, should we directly accept Key?
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Action::Backspace => Key::Backspace,
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Action::Delete => Key::Delete,
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Action::Down => Key::Down,
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Action::End => Key::End,
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Action::Enter => Key::Enter,
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Action::Escape => Key::Escape,
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Action::Home => Key::Home,
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Action::Indent => Key::Tab,
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Action::Insert(c) => Key::Char(c),
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Action::Left => Key::Left,
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Action::PageDown => Key::PageDown,
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Action::PageUp => Key::PageUp,
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Action::Right => Key::Right,
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Action::Unindent => Key::Backtab,
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Action::Up => Key::Up,
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_ => {
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log::debug!("Pass through action {:?}", action);
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editor.action(font_system, action);
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// Always finish change when passing through (TODO: group changes)
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finish_change(editor, &mut self.commands, &mut self.changed);
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return;
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}
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};
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let has_selection = match editor.selection() {
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Selection::None => false,
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_ => true,
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};
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self.parser.parse(key, has_selection, |event| {
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log::debug!(" Event {:?}", event);
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let action = match event {
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Event::AutoIndent => {
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log::info!("TODO: AutoIndent");
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return;
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}
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Event::Backspace => Action::Backspace,
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Event::BackspaceInLine => {
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let cursor = editor.cursor();
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if cursor.index > 0 {
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Action::Backspace
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} else {
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return;
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}
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}
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Event::ChangeStart => {
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editor.start_change();
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return;
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}
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Event::ChangeFinish => {
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finish_change(editor, &mut self.commands, &mut self.changed);
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return;
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}
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Event::Delete => Action::Delete,
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Event::DeleteInLine => {
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let cursor = editor.cursor();
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let buffer = editor.buffer();
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if cursor.index < buffer.lines[cursor.line].text().len() {
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Action::Delete
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} else {
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return;
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}
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}
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Event::Escape => Action::Escape,
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Event::Insert(c) => Action::Insert(c),
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Event::NewLine => Action::Enter,
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Event::Put { register, after } => {
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if let Some((selection, data)) = self.registers.get(®ister) {
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editor.start_change();
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if editor.delete_selection() {
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editor.insert_string(data, None);
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} else {
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match selection {
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Selection::None | Selection::Normal(_) | Selection::Word(_) => {
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let mut cursor = editor.cursor();
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if after {
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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if let Some(c) = text[cursor.index..].chars().next() {
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cursor.index += c.len_utf8();
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}
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editor.set_cursor(cursor);
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}
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editor.insert_at(cursor, data, None);
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}
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Selection::Line(_) => {
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let mut cursor = editor.cursor();
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if after {
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// Insert at next line
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cursor.line += 1;
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} else {
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// Previous line will be moved down, so set cursor to next line
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cursor.line += 1;
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editor.set_cursor(cursor);
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cursor.line -= 1;
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}
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// Insert at start of line
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cursor.index = 0;
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// Insert text
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editor.insert_at(cursor, "\n", None);
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editor.insert_at(cursor, data, None);
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// Hack to allow immediate up/down
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editor.shape_as_needed(font_system);
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// Move to inserted line, preserving cursor x position
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if after {
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editor.action(font_system, Action::Down);
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} else {
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editor.action(font_system, Action::Up);
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}
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}
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}
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}
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finish_change(editor, &mut self.commands, &mut self.changed);
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}
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return;
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}
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Event::Redraw => {
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editor.buffer_mut().set_redraw(true);
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return;
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}
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Event::SelectClear => {
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editor.set_selection(Selection::None);
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return;
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}
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Event::SelectStart => {
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let cursor = editor.cursor();
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editor.set_selection(Selection::Normal(cursor));
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return;
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}
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Event::SelectLineStart => {
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let cursor = editor.cursor();
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editor.set_selection(Selection::Line(cursor));
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return;
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}
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Event::SelectTextObject(text_object, include) => {
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match text_object {
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TextObject::AngleBrackets => select_in(editor, '<', '>', include),
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TextObject::CurlyBrackets => select_in(editor, '{', '}', include),
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TextObject::DoubleQuotes => select_in(editor, '"', '"', include),
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TextObject::Parentheses => select_in(editor, '(', ')', include),
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TextObject::Search { forwards } => {
|
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match &self.search_opt {
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Some((value, _)) => {
|
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if search(editor, value, forwards) {
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let mut cursor = editor.cursor();
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editor.set_selection(Selection::Normal(cursor));
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//TODO: traverse lines if necessary
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cursor.index += value.len();
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editor.set_cursor(cursor);
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}
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}
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None => {}
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}
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}
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TextObject::SingleQuotes => select_in(editor, '\'', '\'', include),
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TextObject::SquareBrackets => select_in(editor, '[', ']', include),
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TextObject::Ticks => select_in(editor, '`', '`', include),
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TextObject::Word(word) => {
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let mut cursor = editor.cursor();
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let mut selection = editor.selection();
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let buffer = editor.buffer();
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let text = buffer.lines[cursor.line].text();
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match WordIter::new(text, word)
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.find(|&(i, w)| i <= cursor.index && i + w.len() > cursor.index)
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{
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Some((i, w)) => {
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cursor.index = i;
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selection = Selection::Normal(cursor);
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cursor.index += w.len();
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}
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None => {
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//TODO
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}
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}
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editor.set_selection(selection);
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editor.set_cursor(cursor);
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}
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_ => {
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log::info!("TODO: {:?}", text_object);
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}
|
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}
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return;
|
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}
|
|
Event::SetSearch(value, forwards) => {
|
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self.search_opt = Some((value, forwards));
|
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return;
|
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}
|
|
Event::ShiftLeft => Action::Unindent,
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|
Event::ShiftRight => Action::Indent,
|
|
Event::SwapCase => {
|
|
log::info!("TODO: SwapCase");
|
|
return;
|
|
}
|
|
Event::Undo => {
|
|
for action in self.commands.undo() {
|
|
undo_2_action(editor, action);
|
|
}
|
|
return;
|
|
}
|
|
Event::Yank { register } => {
|
|
if let Some(data) = editor.copy_selection() {
|
|
self.registers.insert(register, (editor.selection(), data));
|
|
}
|
|
return;
|
|
}
|
|
Event::Motion(motion) => {
|
|
match motion {
|
|
Motion::Around => {
|
|
//TODO: what to do for this psuedo-motion?
|
|
return;
|
|
}
|
|
Motion::Down => Action::Down,
|
|
Motion::End => Action::End,
|
|
Motion::GotoLine(line) => Action::GotoLine(line.saturating_sub(1)),
|
|
Motion::GotoEof => {
|
|
Action::GotoLine(editor.buffer().lines.len().saturating_sub(1))
|
|
}
|
|
Motion::Home => Action::Home,
|
|
Motion::Inside => {
|
|
//TODO: what to do for this psuedo-motion?
|
|
return;
|
|
}
|
|
Motion::Left => Action::Left,
|
|
Motion::LeftInLine => {
|
|
let cursor = editor.cursor();
|
|
if cursor.index > 0 {
|
|
Action::Left
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
Motion::Line => {
|
|
//TODO: what to do for this psuedo-motion?
|
|
return;
|
|
}
|
|
Motion::NextChar(find_c) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index < text.len() {
|
|
match text[cursor.index..]
|
|
.char_indices()
|
|
.filter(|&(i, c)| i > 0 && c == find_c)
|
|
.next()
|
|
{
|
|
Some((i, _)) => {
|
|
cursor.index += i;
|
|
editor.set_cursor(cursor);
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
Motion::NextCharTill(find_c) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index < text.len() {
|
|
let mut last_i = 0;
|
|
for (i, c) in text[cursor.index..].char_indices() {
|
|
if last_i > 0 && c == find_c {
|
|
cursor.index += last_i;
|
|
editor.set_cursor(cursor);
|
|
break;
|
|
} else {
|
|
last_i = i;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
Motion::NextSearch => match &self.search_opt {
|
|
Some((value, forwards)) => {
|
|
search(editor, value, *forwards);
|
|
return;
|
|
}
|
|
None => return,
|
|
},
|
|
Motion::NextWordEnd(word) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
loop {
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index < text.len() {
|
|
cursor.index = WordIter::new(text, word)
|
|
.map(|(i, w)| {
|
|
i + w.char_indices().last().map(|(i, _)| i).unwrap_or(0)
|
|
})
|
|
.find(|&i| i > cursor.index)
|
|
.unwrap_or(text.len());
|
|
if cursor.index == text.len() {
|
|
// Try again, searching next line
|
|
continue;
|
|
}
|
|
} else if cursor.line + 1 < buffer.lines.len() {
|
|
// Go to next line and rerun loop
|
|
cursor.line += 1;
|
|
cursor.index = 0;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
editor.set_cursor(cursor);
|
|
return;
|
|
}
|
|
Motion::NextWordStart(word) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
loop {
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index < text.len() {
|
|
cursor.index = WordIter::new(text, word)
|
|
.map(|(i, _)| i)
|
|
.find(|&i| i > cursor.index)
|
|
.unwrap_or(text.len());
|
|
if cursor.index == text.len() {
|
|
// Try again, searching next line
|
|
continue;
|
|
}
|
|
} else if cursor.line + 1 < buffer.lines.len() {
|
|
// Go to next line and rerun loop
|
|
cursor.line += 1;
|
|
cursor.index = 0;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
editor.set_cursor(cursor);
|
|
return;
|
|
}
|
|
Motion::PageDown => Action::PageDown,
|
|
Motion::PageUp => Action::PageUp,
|
|
Motion::PreviousChar(find_c) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index > 0 {
|
|
match text[..cursor.index]
|
|
.char_indices()
|
|
.filter(|&(_, c)| c == find_c)
|
|
.last()
|
|
{
|
|
Some((i, _)) => {
|
|
cursor.index = i;
|
|
editor.set_cursor(cursor);
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
Motion::PreviousCharTill(find_c) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index > 0 {
|
|
match text[..cursor.index]
|
|
.char_indices()
|
|
.filter_map(|(i, c)| {
|
|
if c == find_c {
|
|
let end = i + c.len_utf8();
|
|
if end < cursor.index {
|
|
return Some(end);
|
|
}
|
|
}
|
|
None
|
|
})
|
|
.last()
|
|
{
|
|
Some(i) => {
|
|
cursor.index = i;
|
|
editor.set_cursor(cursor);
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
Motion::PreviousSearch => match &self.search_opt {
|
|
Some((value, forwards)) => {
|
|
search(editor, value, !*forwards);
|
|
return;
|
|
}
|
|
None => return,
|
|
},
|
|
Motion::PreviousWordEnd(word) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
loop {
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index > 0 {
|
|
cursor.index = WordIter::new(text, word)
|
|
.map(|(i, w)| {
|
|
i + w.char_indices().last().map(|(i, _)| i).unwrap_or(0)
|
|
})
|
|
.filter(|&i| i < cursor.index)
|
|
.last()
|
|
.unwrap_or(0);
|
|
if cursor.index == 0 {
|
|
// Try again, searching previous line
|
|
continue;
|
|
}
|
|
} else if cursor.line > 0 {
|
|
// Go to previous line and rerun loop
|
|
cursor.line -= 1;
|
|
cursor.index = buffer.lines[cursor.line].text().len();
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
editor.set_cursor(cursor);
|
|
return;
|
|
}
|
|
Motion::PreviousWordStart(word) => {
|
|
let mut cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
loop {
|
|
let text = buffer.lines[cursor.line].text();
|
|
if cursor.index > 0 {
|
|
cursor.index = WordIter::new(text, word)
|
|
.map(|(i, _)| i)
|
|
.filter(|&i| i < cursor.index)
|
|
.last()
|
|
.unwrap_or(0);
|
|
if cursor.index == 0 {
|
|
// Try again, searching previous line
|
|
continue;
|
|
}
|
|
} else if cursor.line > 0 {
|
|
// Go to previous line and rerun loop
|
|
cursor.line -= 1;
|
|
cursor.index = buffer.lines[cursor.line].text().len();
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
editor.set_cursor(cursor);
|
|
return;
|
|
}
|
|
Motion::Right => Action::Right,
|
|
Motion::RightInLine => {
|
|
let cursor = editor.cursor();
|
|
let buffer = editor.buffer();
|
|
if cursor.index < buffer.lines[cursor.line].text().len() {
|
|
Action::Right
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
Motion::ScreenHigh => {
|
|
//TODO: is this efficient?
|
|
if let Some(first) = editor.buffer().layout_runs().next() {
|
|
Action::GotoLine(first.line_i)
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
Motion::ScreenLow => {
|
|
//TODO: is this efficient?
|
|
if let Some(last) = editor.buffer().layout_runs().last() {
|
|
Action::GotoLine(last.line_i)
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
Motion::ScreenMiddle => {
|
|
//TODO: is this efficient?
|
|
let mut layout_runs = editor.buffer().layout_runs();
|
|
if let Some(first) = layout_runs.next() {
|
|
if let Some(last) = layout_runs.last() {
|
|
Action::GotoLine((last.line_i + first.line_i) / 2)
|
|
} else {
|
|
return;
|
|
}
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
Motion::Selection => {
|
|
//TODO: what to do for this psuedo-motion?
|
|
return;
|
|
}
|
|
Motion::SoftHome => Action::SoftHome,
|
|
Motion::Up => Action::Up,
|
|
}
|
|
}
|
|
};
|
|
editor.action(font_system, action);
|
|
});
|
|
}
|
|
|
|
#[cfg(feature = "swash")]
|
|
fn draw<F>(
|
|
&self,
|
|
font_system: &mut FontSystem,
|
|
cache: &mut crate::SwashCache,
|
|
color: Color,
|
|
mut f: F,
|
|
) where
|
|
F: FnMut(i32, i32, u32, u32, Color),
|
|
{
|
|
let size = self.buffer().size();
|
|
f(0, 0, size.0 as u32, size.1 as u32, self.background_color());
|
|
|
|
let font_size = self.buffer().metrics().font_size;
|
|
let line_height = self.buffer().metrics().line_height;
|
|
|
|
for run in self.buffer().layout_runs() {
|
|
let line_i = run.line_i;
|
|
let line_y = run.line_y;
|
|
let line_top = run.line_top;
|
|
|
|
let cursor_glyph_opt = |cursor: &Cursor| -> Option<(usize, f32, f32)> {
|
|
//TODO: better calculation of width
|
|
let default_width = font_size / 2.0;
|
|
if cursor.line == line_i {
|
|
for (glyph_i, glyph) in run.glyphs.iter().enumerate() {
|
|
if cursor.index >= glyph.start && cursor.index < glyph.end {
|
|
// Guess x offset based on characters
|
|
let mut before = 0;
|
|
let mut total = 0;
|
|
|
|
let cluster = &run.text[glyph.start..glyph.end];
|
|
for (i, _) in cluster.grapheme_indices(true) {
|
|
if glyph.start + i < cursor.index {
|
|
before += 1;
|
|
}
|
|
total += 1;
|
|
}
|
|
|
|
let width = glyph.w / (total as f32);
|
|
let offset = (before as f32) * width;
|
|
return Some((glyph_i, offset, width));
|
|
}
|
|
}
|
|
match run.glyphs.last() {
|
|
Some(glyph) => {
|
|
if cursor.index == glyph.end {
|
|
return Some((run.glyphs.len(), 0.0, default_width));
|
|
}
|
|
}
|
|
None => {
|
|
return Some((0, 0.0, default_width));
|
|
}
|
|
}
|
|
}
|
|
None
|
|
};
|
|
|
|
// Highlight selection (TODO: HIGHLIGHT COLOR!)
|
|
if let Some((start, end)) = self.selection_bounds() {
|
|
if line_i >= start.line && line_i <= end.line {
|
|
let mut range_opt = None;
|
|
for glyph in run.glyphs.iter() {
|
|
// Guess x offset based on characters
|
|
let cluster = &run.text[glyph.start..glyph.end];
|
|
let total = cluster.grapheme_indices(true).count();
|
|
let mut c_x = glyph.x;
|
|
let c_w = glyph.w / total as f32;
|
|
for (i, c) in cluster.grapheme_indices(true) {
|
|
let c_start = glyph.start + i;
|
|
let c_end = glyph.start + i + c.len();
|
|
if (start.line != line_i || c_end > start.index)
|
|
&& (end.line != line_i || c_start < end.index)
|
|
{
|
|
range_opt = match range_opt.take() {
|
|
Some((min, max)) => Some((
|
|
cmp::min(min, c_x as i32),
|
|
cmp::max(max, (c_x + c_w) as i32),
|
|
)),
|
|
None => Some((c_x as i32, (c_x + c_w) as i32)),
|
|
};
|
|
} else if let Some((min, max)) = range_opt.take() {
|
|
f(
|
|
min,
|
|
line_top as i32,
|
|
cmp::max(0, max - min) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
}
|
|
c_x += c_w;
|
|
}
|
|
}
|
|
|
|
if run.glyphs.is_empty() && end.line > line_i {
|
|
// Highlight all of internal empty lines
|
|
range_opt = Some((0, self.buffer().size().0 as i32));
|
|
}
|
|
|
|
if let Some((mut min, mut max)) = range_opt.take() {
|
|
if end.line > line_i {
|
|
// Draw to end of line
|
|
if run.rtl {
|
|
min = 0;
|
|
} else {
|
|
max = self.buffer().size().0 as i32;
|
|
}
|
|
}
|
|
f(
|
|
min,
|
|
line_top as i32,
|
|
cmp::max(0, max - min) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Draw cursor
|
|
if let Some((cursor_glyph, cursor_glyph_offset, cursor_glyph_width)) =
|
|
cursor_glyph_opt(&self.cursor())
|
|
{
|
|
let block_cursor = if self.passthrough {
|
|
false
|
|
} else {
|
|
match self.parser.mode {
|
|
ViMode::Insert | ViMode::Replace => false,
|
|
_ => true, /*TODO: determine block cursor in other modes*/
|
|
}
|
|
};
|
|
|
|
let (start_x, end_x) = match run.glyphs.get(cursor_glyph) {
|
|
Some(glyph) => {
|
|
// Start of detected glyph
|
|
if glyph.level.is_rtl() {
|
|
(
|
|
(glyph.x + glyph.w - cursor_glyph_offset) as i32,
|
|
(glyph.x + glyph.w - cursor_glyph_offset - cursor_glyph_width)
|
|
as i32,
|
|
)
|
|
} else {
|
|
(
|
|
(glyph.x + cursor_glyph_offset) as i32,
|
|
(glyph.x + cursor_glyph_offset + cursor_glyph_width) as i32,
|
|
)
|
|
}
|
|
}
|
|
None => match run.glyphs.last() {
|
|
Some(glyph) => {
|
|
// End of last glyph
|
|
if glyph.level.is_rtl() {
|
|
(glyph.x as i32, (glyph.x - cursor_glyph_width) as i32)
|
|
} else {
|
|
(
|
|
(glyph.x + glyph.w) as i32,
|
|
(glyph.x + glyph.w + cursor_glyph_width) as i32,
|
|
)
|
|
}
|
|
}
|
|
None => {
|
|
// Start of empty line
|
|
(0, cursor_glyph_width as i32)
|
|
}
|
|
},
|
|
};
|
|
|
|
if block_cursor {
|
|
let left_x = cmp::min(start_x, end_x);
|
|
let right_x = cmp::max(start_x, end_x);
|
|
f(
|
|
left_x,
|
|
line_top as i32,
|
|
(right_x - left_x) as u32,
|
|
line_height as u32,
|
|
Color::rgba(color.r(), color.g(), color.b(), 0x33),
|
|
);
|
|
} else {
|
|
f(start_x, line_top as i32, 1, line_height as u32, color);
|
|
}
|
|
}
|
|
|
|
for glyph in run.glyphs.iter() {
|
|
let physical_glyph = glyph.physical((0., 0.), 1.0);
|
|
|
|
let glyph_color = match glyph.color_opt {
|
|
Some(some) => some,
|
|
None => color,
|
|
};
|
|
|
|
cache.with_pixels(
|
|
font_system,
|
|
physical_glyph.cache_key,
|
|
glyph_color,
|
|
|x, y, color| {
|
|
f(
|
|
physical_glyph.x + x,
|
|
line_y as i32 + physical_glyph.y + y,
|
|
1,
|
|
1,
|
|
color,
|
|
);
|
|
},
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'a, 'b> BorrowedWithFontSystem<'b, ViEditor<'a>> {
|
|
/// Load text from a file, and also set syntax to the best option
|
|
#[cfg(feature = "std")]
|
|
pub fn load_text<P: AsRef<std::path::Path>>(
|
|
&mut self,
|
|
path: P,
|
|
attrs: crate::Attrs,
|
|
) -> std::io::Result<()> {
|
|
self.inner.load_text(self.font_system, path, attrs)
|
|
}
|
|
}
|