1 files changed, 42 insertions, 0 deletions
diff --git a/font/src/lib.rs b/font/src/lib.rs
index 5d35e47a..776127ea 100644
--- a/font/src/lib.rs
+++ b/font/src/lib.rs
@@ -65,6 +65,13 @@ pub const UNDERLINE_CURSOR_CHAR: char = '\u{10a3e2}';
 #[cfg(target_os = "macos")]
 pub const UNDERLINE_CURSOR_CHAR: char = '▁';
 
+/// Character used for the beam cursor
+#[cfg(not(target_os = "macos"))]
+// This is part of the private use area and should not conflict with any font
+pub const BEAM_CURSOR_CHAR: char = '\u{10a3e3}';
+#[cfg(target_os = "macos")]
+pub const BEAM_CURSOR_CHAR: char = '▎';
+
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct FontDesc {
     name: String,
@@ -209,6 +216,41 @@ impl Default for RasterizedGlyph {
     }
 }
 
+// Returns a custom underline cursor character
+pub fn get_underline_cursor_glyph(descent: i32, width: i32) -> Result<RasterizedGlyph, Error> {
+    // Create a new rectangle, the height is half the distance between
+    // bounding box bottom and the baseline
+    let height = i32::abs(descent / 2);
+    let buf = vec![255u8; (width * height * 3) as usize];
+
+    // Create a custom glyph with the rectangle data attached to it
+    return Ok(RasterizedGlyph {
+        c: UNDERLINE_CURSOR_CHAR,
+        top: descent + height,
+        left: 0,
+        height,
+        width,
+        buf: buf,
+    });
+}
+
+// Returns a custom beam cursor character
+pub fn get_beam_cursor_glyph(ascent: i32, height: i32, width: i32) -> Result<RasterizedGlyph, Error> {
+    // Create a new rectangle
+    let beam_width = (f64::from(width) / 5.) as i32;
+    let buf = vec![255u8; (beam_width * height * 3) as usize];
+
+    // Create a custom glyph with the rectangle data attached to it
+    return Ok(RasterizedGlyph {
+        c: BEAM_CURSOR_CHAR,
+        top: ascent,
+        left: 0,
+        height,
+        width: beam_width,
+        buf: buf,
+    });
+}
+
 struct BufDebugger<'a>(&'a [u8]);
 
 impl<'a> fmt::Debug for BufDebugger<'a> {