Add support for rendering cursors to rusttype

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fixed erroneous results when using the `indexed_colors` config option
+- Fixed rendering cursors other than rectangular with the RustType backend
 
 ## Version 0.2.1
 

alacritty_windows.yml

@@ -240,7 +240,12 @@ selection:
 
 hide_cursor_when_typing: false
 
-# - Beam
+# Cursor style
+#
+# Values for 'cursor_style':
+#   - Block
+#   - Underline
+#   - Beam
 cursor_style: Block
 
 # Whether the cursor should be a hollow block on window focus loss

font/src/rusttype/mod.rs

@@ -72,6 +72,32 @@ impl ::Rasterize for RustTypeRasterizer {
     }
 
     fn get_glyph(&mut self, glyph_key: GlyphKey) -> Result<RasterizedGlyph, Error> {
+        match glyph_key.c {
+            super::UNDERLINE_CURSOR_CHAR => {
+                let metrics = self.metrics(glyph_key.font_key, glyph_key.size)?;
+                return super::get_underline_cursor_glyph(metrics.descent as i32, metrics.average_advance as i32);
+            }
+            super::BEAM_CURSOR_CHAR => {
+                let metrics = self.metrics(glyph_key.font_key, glyph_key.size)?;
+
+                return super::get_beam_cursor_glyph(
+                    (metrics.line_height + f64::from(metrics.descent)).round() as i32,
+                    metrics.line_height.round() as i32,
+                    metrics.average_advance.round() as i32
+                );
+            }
+            super::BOX_CURSOR_CHAR => {
+                let metrics = self.metrics(glyph_key.font_key, glyph_key.size)?;
+
+                return super::get_box_cursor_glyph(
+                    (metrics.line_height + f64::from(metrics.descent)).round() as i32,
+                    metrics.line_height.round() as i32,
+                    metrics.average_advance.round() as i32
+                );
+            }
+            _ => ()
+        }
+
         let scaled_glyph = self.fonts[glyph_key.font_key.token as usize]
             .glyph(glyph_key.c)
             .ok_or(Error::MissingGlyph)?