🐛 Ensure line height is properly handled on line breaks

render-wasm/src/render/text.rs

@@ -12,6 +12,7 @@ pub fn render(
         .surfaces
         .canvas(surface_id.unwrap_or(SurfaceId::Fills));
 
+    let mut offset_y = 0.0;
     let container_height = shape.selrect().height();
 
     for builder in paragraphs {
@@ -19,15 +20,19 @@ pub fn render(
         skia_paragraph.layout(shape.bounds().width());
         let paragraph_height: f32 = skia_paragraph.height();
 
-        let offset_y = match shape.vertical_align() {
+        let paragraph_offset_y = match shape.vertical_align() {
             VerticalAlign::Center => (container_height - paragraph_height) / 2.0,
             VerticalAlign::Bottom => container_height - paragraph_height,
             _ => 0.0,
         };
 
+        offset_y += paragraph_offset_y;
+
         let xy = (shape.selrect().x(), shape.selrect().y() + offset_y);
         skia_paragraph.paint(canvas, xy);
 
+        offset_y += paragraph_height;
+
         for line_metrics in skia_paragraph.get_line_metrics().iter() {
             let style_metrics: Vec<_> = line_metrics
                 .get_style_metrics(line_metrics.start_index..line_metrics.end_index)
@@ -38,6 +43,11 @@ pub fn render(
             let total_line_width = line_metrics.width as f32;
             let total_chars = line_metrics.end_index - line_metrics.start_index;
 
+            // No text decoration for empty lines
+            if total_chars == 0 || style_metrics.is_empty() {
+                continue;
+            }
+
             for (i, (index, style_metric)) in style_metrics.iter().enumerate() {
                 let text_style = style_metric.text_style;
                 let font_metrics = style_metric.font_metrics;

render-wasm/src/shapes/text.rs

@@ -275,6 +275,26 @@ impl Paragraph {
             1 => skia::textlayout::TextDirection::RTL,
             _ => skia::textlayout::TextDirection::LTR,
         });
+
+        // Force minimum line height for empty lines using strut style
+        if !self.children.is_empty() {
+            let reference_child = self
+                .children
+                .iter()
+                .find(|child| !child.text.trim().is_empty())
+                .unwrap_or(&self.children[0]);
+
+            let mut strut_style = skia::textlayout::StrutStyle::default();
+            strut_style.set_font_size(reference_child.font_size);
+            strut_style.set_height(self.line_height);
+            strut_style.set_height_override(true);
+            strut_style.set_half_leading(false);
+            strut_style.set_leading(0.0);
+            strut_style.set_strut_enabled(true);
+            strut_style.set_force_strut_height(true);
+            style.set_strut_style(strut_style);
+        }
+
         style
     }
 
@@ -339,6 +359,7 @@ impl TextLeaf {
         style.set_letter_spacing(paragraph.letter_spacing);
         style.set_height(paragraph.line_height);
         style.set_height_override(true);
+        style.set_half_leading(false);
 
         style.set_decoration_type(match self.text_decoration {
             0 => skia::textlayout::TextDecoration::NO_DECORATION,