From 2efa6dce78604cdf422ff233a99f7dd5f06b821c Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Mon, 18 Oct 2021 15:41:33 +0200
Subject: [PATCH] fix(label) fix clipped italic letters

fixes: #2559
---
 src/widgets/lv_label.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/widgets/lv_label.c b/src/widgets/lv_label.c
index dbd400b3d..a13421c13 100644
--- a/src/widgets/lv_label.c
+++ b/src/widgets/lv_label.c
@@ -757,6 +757,15 @@ static void lv_label_event(const lv_obj_class_t * class_p, lv_event_t * e)
         lv_label_revert_dots(obj);
         lv_label_refr_text(obj);
     }
+    else if(code == LV_EVENT_REFR_EXT_DRAW_SIZE) {
+        /* Italic or other non-typical letters can be drawn of out of the object.
+         * It happens if box_w + ofs_x > adw_w in the glyph.
+         * To avoid this add some extra draw area.
+         * font_h / 4 is an empirical value. */
+        const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
+        lv_coord_t font_h = lv_font_get_line_height(font);
+        lv_event_set_ext_draw_size(e, font_h / 4);
+    }
     else if(code == LV_EVENT_SIZE_CHANGED) {
         lv_label_revert_dots(obj);
         lv_label_refr_text(obj);