From ec5be9bfef1a56a5605bffcfbadd8ca00c19d45e Mon Sep 17 00:00:00 2001
From: Valeriia Koriavikova <mandragora1783@gmail.com>
Date: Thu, 2 Jul 2026 18:21:15 +0300
Subject: [PATCH] Merge pull request #15847 from
 LeoMorgan113/feature/ticks-label-fix

Fix chart axis ticks font size
---
 .../widget/lib/chart/time-series-chart.ts     | 25 +++++++++++++++----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
index ca2456e109..763c8d612d 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/chart/time-series-chart.ts
@@ -846,15 +846,29 @@ export class TbTimeSeriesChart {
     }
   }
 
+  private maxTickLabelHalfHeight(): number {
+    const axes = this.yAxisList.filter(a => a.settings.show && a.settings.showTickLabels);
+    if (!axes.length) {
+      return 0;
+    }
+
+    const defaultSize = defaultTimeSeriesChartYAxisSettings.tickLabelFont.size;
+    const maxFontSize = Math.max(...axes.map(a => a.settings.tickLabelFont?.size || defaultSize));
+    return Math.ceil(maxFontSize / 2);
+  }
+
   private minTopOffset(): number {
-    const showTickLabels =
-      !!this.yAxisList.find(yAxis => yAxis.settings.show && yAxis.settings.showTickLabels);
-    return (this.topPointLabels) ? 25 :
-      (showTickLabels ? 10 : 5);
+    if (this.topPointLabels) {
+      return 25;
+    }
+    const half = this.maxTickLabelHalfHeight();
+    return half ? Math.max(10, half) : 5;
   }
 
   private minBottomOffset(): number {
-    return this.settings.dataZoom ? 45 : 5;
+    const half = this.maxTickLabelHalfHeight();
+    const minOffset = half ? Math.max(5, half) : 5;
+    return this.settings.dataZoom ? Math.max(45, minOffset) : minOffset;
   }
 
   private _onParentScroll() {
@@ -883,6 +897,7 @@ export class TbTimeSeriesChart {
             this.updateBarsAnimation(barItems, false);
           }
           this.timeSeriesChart.resize();
+          this.updateAxes();
           if (this.animationEnabled()) {
             this.updateBarsAnimation(barItems, true);
           }