Fix cursor bold and italic rendering (#1136)

* Fix cursor bold and italic rendering

* Rename character to grid cell

* Rename character -> grid_cell in Cursor struct

* Rename get_cursor_character -> get_cursor_grid_cell

src/editor/cursor.rs

@@ -4,6 +4,8 @@ use skia_safe::Color4f;
 
 use crate::editor::style::{Colors, Style};
 
+use super::grid::GridCell;
+
 #[derive(Debug, Clone, PartialEq)]
 pub enum CursorShape {
     Block,
@@ -44,7 +46,7 @@ pub struct Cursor {
     pub style: Option<Arc<Style>>,
     pub enabled: bool,
     pub double_width: bool,
-    pub character: String,
+    pub grid_cell: GridCell,
 }
 
 impl Cursor {
@@ -60,7 +62,7 @@ impl Cursor {
             blinkoff: None,
             enabled: true,
             double_width: false,
-            character: " ".to_string(),
+            grid_cell: (" ".to_string(), None),
         }
     }
 

src/editor/mod.rs

@@ -387,12 +387,12 @@ impl Editor {
     fn send_cursor_info(&mut self) {
         let (grid_left, grid_top) = self.cursor.grid_position;
         if let Some(window) = self.windows.get(&self.cursor.parent_window_id) {
-            let (character, double_width) = window.get_cursor_character(grid_left, grid_top);
-            self.cursor.character = character;
+            let (character, style, double_width) = window.get_cursor_grid_cell(grid_left, grid_top);
+            self.cursor.grid_cell = (character, style);
             self.cursor.double_width = double_width;
         } else {
             self.cursor.double_width = false;
-            self.cursor.character = " ".to_string();
+            self.cursor.grid_cell = (" ".to_string(), None);
         }
         self.draw_command_batcher
             .queue(DrawCommand::UpdateCursor(self.cursor.clone()))

src/editor/window.rs

@@ -63,10 +63,14 @@ impl Window {
         });
     }
 
-    pub fn get_cursor_character(&self, window_left: u64, window_top: u64) -> (String, bool) {
-        let character = match self.grid.get_cell(window_left, window_top) {
-            Some((character, _)) => character.clone(),
-            _ => ' '.to_string(),
+    pub fn get_cursor_grid_cell(
+        &self,
+        window_left: u64,
+        window_top: u64,
+    ) -> (String, Option<Arc<Style>>, bool) {
+        let grid_cell = match self.grid.get_cell(window_left, window_top) {
+            Some((character, style)) => (character.clone(), style.clone()),
+            _ => (' '.to_string(), None),
         };
 
         let double_width = match self.grid.get_cell(window_left + 1, window_top) {
@@ -74,7 +78,7 @@ impl Window {
             _ => false,
         };
 
-        (character, double_width)
+        (grid_cell.0, grid_cell.1, double_width)
     }
 
     pub fn get_width(&self) -> u64 {

src/renderer/cursor_renderer/mod.rs

@@ -273,7 +273,7 @@ impl CursorRenderer {
         let mut paint = Paint::new(skia_safe::colors::WHITE, None);
         paint.set_anti_alias(settings.antialiasing);
 
-        let character = self.cursor.character.clone();
+        let character = self.cursor.grid_cell.0.clone();
 
         let mut cursor_width = grid_renderer.font_dimensions.width;
         if self.cursor.double_width && self.cursor.shape == CursorShape::Block {
@@ -341,52 +341,58 @@ impl CursorRenderer {
             self.previous_editor_mode = current_mode.clone();
         }
 
-        if self.cursor.enabled && render {
-            // Draw Background
-            let background_color = self
-                .cursor
-                .background(&grid_renderer.default_style.colors)
-                .to_color();
-            paint.set_color(background_color);
-
-            // The cursor is made up of four points, so I create a path with each of the four
-            // corners.
-            let mut path = Path::new();
-
-            path.move_to(self.corners[0].current_position);
-            path.line_to(self.corners[1].current_position);
-            path.line_to(self.corners[2].current_position);
-            path.line_to(self.corners[3].current_position);
-            path.close();
-
-            canvas.draw_path(&path, &paint);
-
-            // Draw foreground
-            let foreground_color = self
-                .cursor
-                .foreground(&grid_renderer.default_style.colors)
-                .to_color();
-            paint.set_color(foreground_color);
-
-            canvas.save();
-            canvas.clip_path(&path, None, Some(false));
-
-            let y_adjustment = grid_renderer.shaper.y_adjustment();
-            let blobs = &grid_renderer.shaper.shape_cached(character, false, false);
-
-            for blob in blobs.iter() {
-                canvas.draw_text_blob(
-                    &blob,
-                    (self.destination.x, self.destination.y + y_adjustment as f32),
-                    &paint,
-                );
-            }
+        if !(self.cursor.enabled && render) {
+            return;
+        }
+        // Draw Background
+        let background_color = self
+            .cursor
+            .background(&grid_renderer.default_style.colors)
+            .to_color();
+        paint.set_color(background_color);
+
+        // The cursor is made up of four points, so I create a path with each of the four
+        // corners.
+        let mut path = Path::new();
+
+        path.move_to(self.corners[0].current_position);
+        path.line_to(self.corners[1].current_position);
+        path.line_to(self.corners[2].current_position);
+        path.line_to(self.corners[3].current_position);
+        path.close();
+
+        canvas.draw_path(&path, &paint);
+
+        // Draw foreground
+        let foreground_color = self
+            .cursor
+            .foreground(&grid_renderer.default_style.colors)
+            .to_color();
+        paint.set_color(foreground_color);
+
+        canvas.save();
+        canvas.clip_path(&path, None, Some(false));
+
+        let y_adjustment = grid_renderer.shaper.y_adjustment();
+        let style = &self.cursor.grid_cell.1;
+
+        let bold = style.as_ref().map(|x| x.bold).unwrap_or(false);
+        let italic = style.as_ref().map(|x| x.italic).unwrap_or(false);
+
+        let blobs = &grid_renderer.shaper.shape_cached(character, bold, italic);
+
+        for blob in blobs.iter() {
+            canvas.draw_text_blob(
+                &blob,
+                (self.destination.x, self.destination.y + y_adjustment as f32),
+                &paint,
+            );
+        }
 
-            canvas.restore();
+        canvas.restore();
 
-            if let Some(vfx) = self.cursor_vfx.as_ref() {
-                vfx.render(&settings, canvas, grid_renderer, &self.cursor);
-            }
+        if let Some(vfx) = self.cursor_vfx.as_ref() {
+            vfx.render(&settings, canvas, grid_renderer, &self.cursor);
         }
     }
 }