From 52db599f2bd169d0c23902d970eba87c34238bf3 Mon Sep 17 00:00:00 2001
From: SoraTenshi <dream@neoncity.dev>
Date: Sun, 23 Oct 2022 18:52:22 +0000
Subject: [PATCH] Add style for rainbow ig, dimming, normal and none

---
 book/src/configuration.md   | 14 +++++++-------
 helix-term/src/ui/editor.rs | 14 +++++++++++---
 helix-view/src/editor.rs    | 13 ++++++++++---
 3 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/book/src/configuration.md b/book/src/configuration.md
index 63279403..3fd1bd17 100644
--- a/book/src/configuration.md
+++ b/book/src/configuration.md
@@ -237,12 +237,12 @@ tabpad = "·" # Tabs will look like "→···" (depending on tab width)
 
 Options for rendering vertical indent guides.
 
-| Key         | Description                                                  | Default |
-| ---         | ---                                                          | ---     |
-| `render`    | Whether to render indent guides.                             | `false` |
-| `character` | Literal character to use for rendering the indent guide      | `│`     |
-| `rainbow`   | Whether or not the indent guides shall have changing colors. | `false` |
-| `skip-levels` | Number of indent levels to skip                            | `0`     |
+| Key           | Description                                                                                     | Default |
+| ---           | ---                                                                                             | ---     |
+| `render`      | Whether to render indent guides.                                                                | `false` |
+| `character`   | Literal character to use for rendering the indent guide                                         | `│`     |
+| `rainbow`     | Whether or not the indent guides shall have changing colors. It can be `none`, `dim` or `normal`| `none`  |
+| `skip-levels` | Number of indent levels to skip                                                                 | `0`     |
 
 Example:
 
@@ -250,6 +250,6 @@ Example:
 [editor.indent-guides]
 render = true
 character = "╎"
-rainbow = true
+rainbow = "normal"
 skip-levels = 1
 ```
diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 1826d173..ebc00c5b 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -17,7 +17,7 @@ use helix_core::{
 };
 use helix_view::{
     document::{Mode, SCRATCH_BUFFER_NAME},
-    editor::{CompleteAction, CursorShapeConfig},
+    editor::{CompleteAction, CursorShapeConfig, RainbowIndentOptions},
     graphics::{Color, CursorKind, Modifier, Rect, Style},
     input::{KeyEvent, MouseButton, MouseEvent, MouseEventKind},
     keyboard::{KeyCode, KeyModifiers},
@@ -443,9 +443,17 @@ impl EditorView {
             // TODO: limit to a max indent level too. It doesn't cause visual artifacts but it would avoid some
             // extra loops if the code is deeply nested.
 
+            let modifier = if config.indent_guides.rainbow == RainbowIndentOptions::Dim {
+                Modifier::DIM
+            } else {
+                Modifier::empty()
+            };
+
             for i in starting_indent..(indent_level / tab_width as u16) {
-                let style = if config.indent_guides.rainbow {
-                    indent_guide_style.patch(theme.get_rainbow(i as usize))
+                let style = if config.indent_guides.rainbow != RainbowIndentOptions::None {
+                    indent_guide_style
+                        .patch(theme.get_rainbow(i as usize))
+                        .add_modifier(modifier)
                 } else {
                     indent_guide_style
                 };
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index bdf2be88..cbaa7d10 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -551,13 +551,20 @@ impl Default for WhitespaceCharacters {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum RainbowIndentOptions {
+    None,
+    Dim,
+    Normal,
+}
+
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(default, rename_all = "kebab-case")]
 pub struct IndentGuidesConfig {
     pub render: bool,
     pub character: char,
-    // TODO: Make enum to also support background rainbow for indent guides
-    pub rainbow: bool,
+    pub rainbow: RainbowIndentOptions,
     pub skip_levels: u16,
 }
 
@@ -567,7 +574,7 @@ impl Default for IndentGuidesConfig {
             skip_levels: 0,
             render: false,
             character: '│',
-            rainbow: false,
+            rainbow: RainbowIndentOptions::None,
         }
     }
 }