From 56ce76cf42cd34900f649bdf08e2a001f32658a4 Mon Sep 17 00:00:00 2001
From: Polesznyák Márk <contact@pml68.dev>
Date: Mon, 22 Sep 2025 19:17:48 +0200
Subject: feat(wip): iced_material based code highlighting

---
 src/panes/code_view.rs | 112 ++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 102 insertions(+), 10 deletions(-)

(limited to 'src')

diff --git a/src/panes/code_view.rs b/src/panes/code_view.rs
index 5e29634..2dc27e9 100644
--- a/src/panes/code_view.rs
+++ b/src/panes/code_view.rs
@@ -10,19 +10,111 @@ use crate::icon;
 use crate::types::{DesignerPane, Message};
 
 // TODO: implement a highlight style for the material theme
+//fn highlight_style(theme: &Theme, scope: &Scope) -> Format<Font> {
+//    let theme = if theme.is_dark() {
+//        iced::Theme::SolarizedDark
+//    } else {
+//        iced::Theme::SolarizedLight
+//    };
+//
+//    match scope {
+//        Scope::Custom { .. } | Scope::Other => Format {
+//            color: Some(theme.extended_palette().primary.strong.color),
+//            font: None,
+//        },
+//        _ => Highlight::default_style(&theme, scope),
+//    }
+//}
+
 fn highlight_style(theme: &Theme, scope: &Scope) -> Format<Font> {
-    let theme = if theme.is_dark() {
-        iced::Theme::SolarizedDark
-    } else {
-        iced::Theme::SolarizedLight
+    let colors = theme.colors();
+
+    let color = match scope {
+        // Comments are low-priority and often de-emphasized
+        Scope::Comment => colors.outline.variant,
+
+        // Strings and escape sequences are content-rich
+        Scope::String
+        | Scope::QuotedString
+        | Scope::QuotedSingle
+        | Scope::EscapeSequence => colors.tertiary.color,
+
+        // Regex deserves distinct treatment, often looking like code but acting like a string
+        Scope::RegExp => colors.secondary.secondary_container,
+
+        // Numeric literals and constants (user- or built-in)
+        Scope::Number | Scope::BuiltinConstant | Scope::UserDefinedConstant => {
+            colors.secondary.color
+        }
+
+        // Variable identifiers and function call references
+        Scope::Variable | Scope::VariableFunction | Scope::VariableStart => {
+            colors.primary.color
+        }
+
+        // Function and method declarations
+        Scope::FunctionName | Scope::LibraryFunction => {
+            colors.primary.primary_container
+        }
+
+        // Keywords and language operators
+        Scope::Keyword
+        | Scope::KeywordOperator
+        | Scope::KeywordOther
+        | Scope::Operator
+        | Scope::Continuation => colors.secondary.secondary_container,
+
+        // Module/class/namespace declarations
+        Scope::Class
+        | Scope::LibraryClass
+        | Scope::StorageType
+        | Scope::StorageModifier
+        | Scope::Storage => colors.tertiary.tertiary_container,
+
+        // Import paths or directives
+        Scope::Import => colors.tertiary.color,
+
+        // Error cases, invalid tokens
+        Scope::Exception | Scope::Invalid => colors.error.color,
+
+        // HTML-like tags or markup tokens
+        Scope::TagName | Scope::TagStart => colors.primary.primary_container,
+
+        // Special constants, macros, etc.
+        Scope::Special | Scope::SupportConstruct => {
+            colors.inverse.inverse_primary
+        }
+
+        // Braces, parentheses, brackets — structural but low priority
+        Scope::Braces | Scope::Parantheses | Scope::Brackets => {
+            colors.outline.variant
+        }
+
+        // Fallback
+        Scope::Other => colors.surface.on_surface_variant,
+
+        // Handle user-defined custom scope
+        Scope::Custom { name, .. } => {
+            if name.contains("comment") {
+                colors.outline.variant
+            } else if name.contains("error") {
+                colors.error.color
+            } else if name.contains("string") {
+                colors.tertiary.color
+            } else if name.contains("keyword") {
+                colors.secondary.secondary_container
+            } else if name.contains("function") {
+                colors.primary.primary_container
+            } else {
+                // Default fallback for unknown custom scopes
+                colors.surface.on_surface_variant
+            }
+        }
     };
 
-    match scope {
-        Scope::Custom { .. } | Scope::Other => Format {
-            color: Some(theme.extended_palette().primary.strong.color),
-            font: None,
-        },
-        _ => Highlight::default_style(&theme, scope),
+    Format {
+        color: Some(color),
+        font: None,
     }
 }
 
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