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Implement Action::SelectWord in text::Editor

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Héctor Ramón Jiménez 2023-09-14 15:20:23 +02:00
parent edd5918475
commit f7d66899f1
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2 changed files with 61 additions and 1 deletions
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1
graphics/Cargo.toml
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@ -34,6 +34,7 @@ raw-window-handle.workspace = true
rustc-hash.workspace = true
thiserror.workspace = true
twox-hash.workspace = true
unicode-segmentation.workspace = true
image.workspace = true
image.optional = true

61
graphics/src/text/editor.rs
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@ -274,7 +274,66 @@ impl editor::Editor for Editor {
}
}
}
Action::SelectWord => todo!(),
Action::SelectWord => {
use unicode_segmentation::UnicodeSegmentation;
let cursor = editor.cursor();
if let Some(line) = editor.buffer().lines.get(cursor.line) {
let (start, end) =
UnicodeSegmentation::unicode_word_indices(line.text())
// Split words with dots
.flat_map(|(i, word)| {
word.split('.').scan(i, |current, word| {
let start = *current;
*current += word.len() + 1;
Some((start, word))
})
})
// Turn words into ranges
.map(|(i, word)| (i, i + word.len()))
// Find the word at cursor
.find(|&(start, end)| {
start <= cursor.index && cursor.index < end
})
// Cursor is not in a word. Let's select its punctuation cluster.
.unwrap_or_else(|| {
let start = line.text()[..cursor.index]
.char_indices()
.rev()
.take_while(|(_, c)| {
c.is_ascii_punctuation()
})
.map(|(i, _)| i)
.last()
.unwrap_or(cursor.index);
let end = line.text()[cursor.index..]
.char_indices()
.skip_while(|(_, c)| {
c.is_ascii_punctuation()
})
.map(|(i, _)| i + cursor.index)
.next()
.unwrap_or(cursor.index);
(start, end)
});
if start != end {
editor.set_cursor(cosmic_text::Cursor {
index: start,
..cursor
});
editor.set_select_opt(Some(cosmic_text::Cursor {
index: end,
..cursor
}));
}
}
}
Action::SelectLine => todo!(),
// Editing events