Add get_rainbow method, added a todo for rainbow

helix-term/src/ui/editor.rs

@@ -442,8 +442,7 @@ impl EditorView {
 
             for i in starting_indent..(indent_level / tab_width as u16) {
                 let style = if config.indent_guides.rainbow {
-                    let color_index = i as usize % theme.rainbow_length();
-                    indent_guide_style.patch(theme.get(&format!("rainbow.{}", color_index)))
+                    indent_guide_style.patch(theme.get_rainbow(i as usize))
                 } else {
                     indent_guide_style
                 };

helix-view/src/editor.rs

@@ -533,6 +533,8 @@ impl Default for WhitespaceCharacters {
 pub struct IndentGuidesConfig {
     pub render: bool,
     pub character: char,
+
+    // TODO: Make enum to also support background rainbow for indent guides
     pub rainbow: bool,
 }
 

helix-view/src/theme.rs

@@ -213,6 +213,10 @@ impl Theme {
         self.rainbow_length
     }
 
+    pub fn get_rainbow(&self, index: usize) -> Style {
+        self.highlights[index % self.rainbow_length]
+    }
+
     pub fn default_rainbow() -> Vec<Style> {
         vec![
             Style::default().fg(Color::Red),