triple click to select line + fix highlighting

src/core/text/build.rs

@@ -92,11 +92,7 @@ impl TextBuilderOutput for TextEditOutput {
             builder.attrs.font_size,
             builder.attrs.line_height,
         ));
-        let mut text = TextEdit {
-            view: TextView::new(buf, builder.attrs, builder.hint.get(ui)),
-            selection: Default::default(),
-            history: Default::default(),
-        };
+        let mut text = TextEdit::new(TextView::new(buf, builder.attrs, builder.hint.get(ui)));
         let font_system = &mut ui.data.text.font_system;
         text.buf
             .set_text(font_system, &builder.content, &Attrs::new(), SHAPING, None);

src/core/text/edit.rs

@@ -9,12 +9,21 @@ use winit::{
 };
 
 pub struct TextEdit {
-    pub(super) view: TextView,
-    pub(super) selection: TextSelection,
-    pub(super) history: Vec<(String, TextSelection)>,
+    view: TextView,
+    selection: TextSelection,
+    history: Vec<(String, TextSelection)>,
+    double_hit: Option<Cursor>,
 }
 
 impl TextEdit {
+    pub fn new(view: TextView) -> Self {
+        Self {
+            view,
+            selection: Default::default(),
+            history: Default::default(),
+            double_hit: None,
+        }
+    }
     pub fn select_content(&self, start: Cursor, end: Cursor) -> String {
         let (start, end) = sort_cursors(start, end);
         let mut iter = self.buf.lines.iter().skip(start.line);
@@ -106,6 +115,9 @@ fn iter_layout_lines(
             }
         }
         for line in iter {
+            if line.line_i > end.line {
+                return;
+            }
             if line.line_i == end.line
                 && let Some(end_x) = index_x(&line, end.index)
             {
@@ -339,6 +351,14 @@ impl<'a> TextEditCtx<'a> {
         }
     }
 
+    pub fn select_line_at(&mut self, cursor: Cursor) {
+        let end = self.text.buf.lines[cursor.line].text().len();
+        self.text.selection = TextSelection::Span {
+            start: Cursor::new(cursor.line, 0),
+            end: Cursor::new(cursor.line, end),
+        }
+    }
+
     pub fn select(&mut self, pos: Vec2, size: Vec2, drag: bool, recent: bool) {
         let pos = pos - self.text.region().top_left().to_abs(size);
         let hit = self.text.buf.hit(pos.x, pos.y);
@@ -354,6 +374,7 @@ impl<'a> TextEditCtx<'a> {
                 (None, true) => (),
                 (Some(hit), false) => {
                     if recent && hit == *pos {
+                        self.text.double_hit = Some(hit);
                         return self.select_word_at(hit);
                     } else {
                         *pos = hit
@@ -364,7 +385,16 @@ impl<'a> TextEditCtx<'a> {
             TextSelection::Span { start, end } => match (hit, drag) {
                 (None, false) => *sel = TextSelection::None,
                 (None, true) => *sel = TextSelection::Pos(*start),
-                (Some(hit), false) => *sel = TextSelection::Pos(hit),
+                (Some(hit), false) => {
+                    if recent
+                        && let Some(double) = self.text.double_hit
+                        && double == hit
+                    {
+                        return self.select_line_at(hit);
+                    } else {
+                        *sel = TextSelection::Pos(hit)
+                    }
+                }
                 (Some(hit), true) => *end = hit,
             },
         }