Performance improvements

examples/editor-libcosmic/src/text_box.rs

@@ -152,6 +152,8 @@ where
             );
         }
 
+        buffer.shape_until_cursor();
+
         let buffer_x = layout.bounds().x;
         let buffer_y = layout.bounds().y;
         buffer.draw(text_color_u32, |x, y, w, h, color| {

examples/editor-orbclient/src/main.rs

@@ -100,6 +100,8 @@ fn main() {
         let font_size = buffer.metrics().font_size;
         let line_height = buffer.metrics().line_height;
 
+        buffer.shape_until_cursor();
+
         if buffer.redraw {
             let instant = Instant::now();
 

examples/editor-test/src/main.rs

@@ -9,6 +9,8 @@ fn redraw(window: &mut Window, buffer: &mut TextBuffer<'_>) {
     let font_size = buffer.metrics().font_size;
     let line_height = buffer.metrics().line_height;
 
+    buffer.shape_until_cursor();
+
     if buffer.redraw {
         let instant = Instant::now();