From d097b5f1d5eb8e8be755f28f99b48614904ab89b Mon Sep 17 00:00:00 2001
From: Hendrik Norkowski <hnorkowski@mail.de>
Date: Fri, 21 Apr 2023 22:59:33 +0200
Subject: [PATCH] feat(ui): dimm cursor when terminal loses focus POC

---
 helix-term/src/ui/editor.rs          | 26 ++++++++++++++++++++++++--
 runtime/themes/catppuccin_mocha.toml |  2 ++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index fd8e8fb21b471..fa7cfbff94831 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -43,6 +43,8 @@ pub struct EditorView {
     pub(crate) last_insert: (commands::MappableCommand, Vec<InsertEvent>),
     pub(crate) completion: Option<Completion>,
     spinners: ProgressSpinners,
+    // Tracks if the terminal window is focused by reaction to terminal focus events
+    terminal_focused: bool,
 }
 
 #[derive(Debug, Clone)]
@@ -68,6 +70,7 @@ impl EditorView {
             last_insert: (commands::MappableCommand::normal_mode, Vec::new()),
             completion: None,
             spinners: ProgressSpinners::default(),
+            terminal_focused: true,
         }
     }
 
@@ -148,6 +151,7 @@ impl EditorView {
                     view,
                     theme,
                     &config.cursor_shape,
+                    self.terminal_focused,
                 ),
             );
             let focused_view_elements = Self::highlight_focused_view_elements(view, doc, theme);
@@ -391,6 +395,7 @@ impl EditorView {
         view: &View,
         theme: &Theme,
         cursor_shape_config: &CursorShapeConfig,
+        is_terminal_focused: bool,
     ) -> Vec<(usize, std::ops::Range<usize>)> {
         let text = doc.text().slice(..);
         let selection = doc.selection(view.id);
@@ -412,6 +417,9 @@ impl EditorView {
         let base_primary_cursor_scope = theme
             .find_scope_index("ui.cursor.primary")
             .unwrap_or(base_cursor_scope);
+        let base_primary_cursor_unfocused_scope = theme
+            .find_scope_index("ui.cursor.primary_unfocused")
+            .unwrap_or(base_cursor_scope);
 
         let cursor_scope = match mode {
             Mode::Insert => theme.find_scope_index_exact("ui.cursor.insert"),
@@ -426,12 +434,22 @@ impl EditorView {
             Mode::Normal => theme.find_scope_index_exact("ui.cursor.primary.normal"),
         }
         .unwrap_or(base_primary_cursor_scope);
+        let primary_cursor_unfocused_scope = match mode {
+            Mode::Insert => theme.find_scope_index_exact("ui.cursor.primary_unfocused.insert"),
+            Mode::Select => theme.find_scope_index_exact("ui.cursor.primary_unfocused.select"),
+            Mode::Normal => theme.find_scope_index_exact("ui.cursor.primary_unfocused.normal"),
+        }
+        .unwrap_or(base_primary_cursor_unfocused_scope);
 
         let mut spans: Vec<(usize, std::ops::Range<usize>)> = Vec::new();
         for (i, range) in selection.iter().enumerate() {
             let selection_is_primary = i == primary_idx;
             let (cursor_scope, selection_scope) = if selection_is_primary {
-                (primary_cursor_scope, primary_selection_scope)
+                if is_terminal_focused {
+                    (primary_cursor_scope, primary_selection_scope)
+                } else {
+                    (primary_cursor_unfocused_scope, primary_selection_scope)
+                }
             } else {
                 (cursor_scope, selection_scope)
             };
@@ -1344,13 +1362,17 @@ impl Component for EditorView {
 
             Event::Mouse(event) => self.handle_mouse_event(event, &mut cx),
             Event::IdleTimeout => self.handle_idle_timeout(&mut cx),
-            Event::FocusGained => EventResult::Ignored(None),
+            Event::FocusGained => {
+                self.terminal_focused = true;
+                EventResult::Consumed(None)
+            }
             Event::FocusLost => {
                 if context.editor.config().auto_save {
                     if let Err(e) = commands::typed::write_all_impl(context, false, false) {
                         context.editor.set_error(format!("{}", e));
                     }
                 }
+                self.terminal_focused = false;
                 EventResult::Consumed(None)
             }
         }
diff --git a/runtime/themes/catppuccin_mocha.toml b/runtime/themes/catppuccin_mocha.toml
index 126613bc70b8a..a886be02d2c7b 100644
--- a/runtime/themes/catppuccin_mocha.toml
+++ b/runtime/themes/catppuccin_mocha.toml
@@ -93,6 +93,7 @@
 
 "ui.cursor" = { fg = "base", bg = "secondary_cursor" }
 "ui.cursor.primary" = { fg = "base", bg = "rosewater" }
+"ui.cursor.primary_unfocused" = { fg = "base", bg = "rosewater_dimmed" }
 "ui.cursor.match" = { fg = "peach", modifiers = ["bold"] }
 
 "ui.cursorline.primary" = { bg = "cursorline" }
@@ -115,6 +116,7 @@ hint = "teal"
 [palette]
 # catppuccin palette colors
 rosewater = "#f5e0dc"
+rosewater_dimmed = "#474249"
 flamingo = "#f2cdcd"
 pink = "#f5c2e7"
 mauve = "#cba6f7"