Add ui.set_row_height

egui/src/experimental/easy_mark_viewer.rs

@@ -8,7 +8,9 @@ pub fn easy_mark(ui: &mut Ui, easy_mark: &str) {
 
 pub fn easy_mark_it<'em>(ui: &mut Ui, items: impl Iterator<Item = easy_mark::Item<'em>>) {
     ui.horizontal_wrapped(|ui| {
-        ui.spacing_mut().item_spacing = Vec2::ZERO;
+        ui.spacing_mut().item_spacing = Vec2::new(0.0, 0.0);
+        ui.set_row_height(ui.fonts()[TextStyle::Body].row_height());
+
         for item in items {
             item_ui(ui, item);
         }
@@ -24,6 +26,7 @@ pub fn item_ui(ui: &mut Ui, item: easy_mark::Item<'_>) {
             // ui.label("\n"); // too much spacing (paragraph spacing)
             ui.allocate_exact_size(vec2(0.0, row_height), Sense::hover()); // make sure we take up some height
             ui.end_row();
+            ui.set_row_height(row_height);
         }
 
         easy_mark::Item::Text(style, text) => {

egui/src/layout.rs

@@ -698,6 +698,13 @@ impl Layout {
             }
         }
     }
+
+    /// Set row height in horizontal wrapping layout.
+    pub(crate) fn set_row_height(&mut self, region: &mut Region, height: f32) {
+        if self.main_wrap && self.is_horizontal() {
+            region.cursor.max.y = region.cursor.min.y + height;
+        }
+    }
 }
 
 // ----------------------------------------------------------------------------

egui/src/placer.rs

@@ -177,6 +177,11 @@ impl Placer {
             self.layout.end_row(&mut self.region, item_spacing)
         }
     }
+
+    /// Set row height in horizontal wrapping layout.
+    pub(crate) fn set_row_height(&mut self, height: f32) {
+        self.layout.set_row_height(&mut self.region, height);
+    }
 }
 
 impl Placer {

egui/src/ui.rs

@@ -1386,6 +1386,11 @@ impl Ui {
             .end_row(self.spacing().item_spacing, &self.painter().clone());
     }
 
+    /// Set row height in horizontal wrapping layout.
+    pub fn set_row_height(&mut self, height: f32) {
+        self.placer.set_row_height(height);
+    }
+
     /// Temporarily split split an Ui into several columns.
     ///
     /// ```

egui_demo_lib/src/apps/http_app.rs

@@ -238,8 +238,10 @@ impl ColoredText {
 
     pub fn ui(&self, ui: &mut egui::Ui) {
         for line in &self.0 {
-            ui.horizontal_wrapped_for_text(egui::TextStyle::Monospace, |ui| {
+            ui.horizontal_wrapped(|ui| {
-                ui.spacing_mut().item_spacing.x = 0.0;
+                ui.spacing_mut().item_spacing = egui::Vec2::ZERO;
+                ui.set_row_height(ui.fonts()[egui::TextStyle::Body].row_height());
+
                 for (style, range) in line {
                     let fg = style.foreground;
                     let text_color = egui::Color32::from_rgb(fg.r, fg.g, fg.b);