Custom file picker width

book/src/configuration.md

@@ -35,6 +35,9 @@ To override global configuration parameters, create a `config.toml` file located
 |`git-global` | Enables reading global .gitignore, whose path is specified in git's config: `core.excludefile` option. | true
 |`git-exclude` | Enables reading `.git/info/exclude` files. | true
 |`max-depth` | Set with an integer value for maximum depth to recurse. | Defaults to `None`.
+|`width-factor` | File picker width, treated as a factor. Defaults to 0.9 | `0.9` |
+|`height-factor` | File picker height, treated as a factor. Defaults to 0.9 | `0.9` |
+|`preview-width` | File picker preview width, from 0.0 to 1.0 treated as a factor, > 1 width in characters. Defaults to 0.5 | `0.5` |
 
 ## LSP
 

helix-term/src/ui/picker.rs

@@ -160,15 +160,24 @@ impl<T: 'static> Component for FilePicker<T> {
         // |         | |         |
         // +---------+ +---------+
         let render_preview = area.width > MIN_SCREEN_WIDTH_FOR_PREVIEW;
-        let area = inner_rect(area);
+        let area = inner_rect(
+            area,
+            cx.editor.config.file_picker.width_factor,
+            cx.editor.config.file_picker.height_factor,
+        );
         // -- Render the frame:
         // clear area
         let background = cx.editor.theme.get("ui.background");
         let text = cx.editor.theme.get("ui.text");
         surface.clear_with(area, background);
 
         let picker_width = if render_preview {
-            area.width / 2
+            match cx.editor.config.file_picker.preview_width {
+                w if w <= 0.0 => area.width / 2,
+                w if w <= 1.0 => (area.width as f32 * (1.0 - w)).round() as u16,
+                w if w < area.width as f32 => area.width - w.round() as u16,
+                _ => area.width,
+            }
         } else {
             area.width
         };
@@ -388,10 +397,10 @@ impl<T> Picker<T> {
 // - on input change:
 //  - score all the names in relation to input
 
-fn inner_rect(area: Rect) -> Rect {
+fn inner_rect(area: Rect, width_factor: f32, height_factor: f32) -> Rect {
     let margin = Margin {
-        vertical: area.height * 10 / 100,
-        horizontal: area.width * 10 / 100,
+        vertical: (area.height as f32 * (1.0 - width_factor)).round() as u16,
+        horizontal: (area.width as f32 * (1.0 - height_factor)).round() as u16,
     };
     area.inner(&margin)
 }
@@ -453,7 +462,11 @@ impl<T: 'static> Component for Picker<T> {
 
     fn render(&mut self, area: Rect, surface: &mut Surface, cx: &mut Context) {
         let area = if self.render_centered {
-            inner_rect(area)
+            inner_rect(
+                area,
+                cx.editor.config.file_picker.width_factor,
+                cx.editor.config.file_picker.height_factor,
+            )
         } else {
             area
         };
@@ -534,7 +547,11 @@ impl<T: 'static> Component for Picker<T> {
 
     fn cursor(&self, area: Rect, editor: &Editor) -> (Option<Position>, CursorKind) {
         // TODO: this is mostly duplicate code
-        let area = inner_rect(area);
+        let area = inner_rect(
+            area,
+            editor.config.file_picker.width_factor,
+            editor.config.file_picker.height_factor,
+        );
         let block = Block::default().borders(Borders::ALL);
         // calculate the inner area inside the box
         let inner = block.inner(area);

helix-view/src/editor.rs

@@ -59,6 +59,12 @@ pub struct FilePickerConfig {
     /// WalkBuilder options
     /// Maximum Depth to recurse directories in file picker and global search. Defaults to `None`.
     pub max_depth: Option<usize>,
+    /// File picker width, treated as a factor. Defaults to 0.9.
+    pub width_factor: f32,
+    /// File picker height, treated as a factor. Defaults to 0.9.
+    pub height_factor: f32,
+    /// File picker preview width, from 0.0 to 1.0 treated as a factor, > 1 width in characters. Defaults to 0.5.
+    pub preview_width: f32,
 }
 
 impl Default for FilePickerConfig {
@@ -71,6 +77,9 @@ impl Default for FilePickerConfig {
             git_global: true,
             git_exclude: true,
             max_depth: None,
+            width_factor: 0.9,
+            height_factor: 0.9,
+            preview_width: 0.5,
         }
     }
 }