From 3b0b007a406691eb88c8b1dcff00287be4034bef Mon Sep 17 00:00:00 2001
From: Zhang Dian <54255897+zdpcdt@users.noreply.github.com>
Date: Mon, 9 Feb 2026 18:29:13 +0800
Subject: [PATCH] fix: reverse TickBar when Slider direction is reversed.
 (#744)

---
 .../Semi.Avalonia.Demo/Pages/SliderDemo.axaml |  9 +++++
 src/Semi.Avalonia/Controls/Slider.axaml       | 36 ++++++++++---------
 2 files changed, 29 insertions(+), 16 deletions(-)

diff --git a/demo/Semi.Avalonia.Demo/Pages/SliderDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/SliderDemo.axaml
index 63cabf9..c1de1e2 100644
--- a/demo/Semi.Avalonia.Demo/Pages/SliderDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/SliderDemo.axaml
@@ -22,6 +22,15 @@
             TickFrequency="10"
             TickPlacement="Outside"
             Value="0" />
+        <Slider
+            Value="0"
+            Minimum="0"
+            Maximum="100"
+            TickPlacement="BottomRight"
+            IsSnapToTickEnabled="True"
+            IsDirectionReversed="True"
+            Ticks="0,20,25,40,75,100"
+            Width="300" />
         <Slider
             Width="300"
             Classes="ToolTip"
diff --git a/src/Semi.Avalonia/Controls/Slider.axaml b/src/Semi.Avalonia/Controls/Slider.axaml
index 7ccd916..117121b 100644
--- a/src/Semi.Avalonia/Controls/Slider.axaml
+++ b/src/Semi.Avalonia/Controls/Slider.axaml
@@ -92,11 +92,12 @@
                                 VerticalAlignment="Bottom"
                                 Fill="{DynamicResource SliderTickForeground}"
                                 IsVisible="False"
-                                Maximum="{TemplateBinding Slider.Maximum}"
-                                Minimum="{TemplateBinding Slider.Minimum}"
-                                Orientation="{TemplateBinding Slider.Orientation}"
+                                Maximum="{TemplateBinding Maximum}"
+                                Minimum="{TemplateBinding Minimum}"
+                                Orientation="{TemplateBinding Orientation}"
                                 Placement="Top"
-                                TickFrequency="{TemplateBinding Slider.TickFrequency}"
+                                IsDirectionReversed="{TemplateBinding IsDirectionReversed}"
+                                TickFrequency="{TemplateBinding TickFrequency}"
                                 Ticks="{TemplateBinding Ticks}" />
                             <TickBar
                                 Name="BottomTickBar"
@@ -106,11 +107,12 @@
                                 VerticalAlignment="Top"
                                 Fill="{DynamicResource SliderTickForeground}"
                                 IsVisible="False"
-                                Maximum="{TemplateBinding Slider.Maximum}"
-                                Minimum="{TemplateBinding Slider.Minimum}"
-                                Orientation="{TemplateBinding Slider.Orientation}"
+                                Maximum="{TemplateBinding Maximum}"
+                                Minimum="{TemplateBinding Minimum}"
+                                Orientation="{TemplateBinding Orientation}"
                                 Placement="Bottom"
-                                TickFrequency="{TemplateBinding Slider.TickFrequency}"
+                                IsDirectionReversed="{TemplateBinding IsDirectionReversed}"
+                                TickFrequency="{TemplateBinding TickFrequency}"
                                 Ticks="{TemplateBinding Ticks}" />
                             <Track
                                 Name="PART_Track"
@@ -169,11 +171,12 @@
                                 HorizontalAlignment="Right"
                                 Fill="{DynamicResource SliderTickForeground}"
                                 IsVisible="False"
-                                Maximum="{TemplateBinding Slider.Maximum}"
-                                Minimum="{TemplateBinding Slider.Minimum}"
-                                Orientation="{TemplateBinding Slider.Orientation}"
+                                Maximum="{TemplateBinding Maximum}"
+                                Minimum="{TemplateBinding Minimum}"
+                                Orientation="{TemplateBinding Orientation}"
                                 Placement="Left"
-                                TickFrequency="{TemplateBinding Slider.TickFrequency}"
+                                IsDirectionReversed="{TemplateBinding IsDirectionReversed}"
+                                TickFrequency="{TemplateBinding TickFrequency}"
                                 Ticks="{TemplateBinding Ticks}" />
                             <TickBar
                                 Name="RightTickBar"
@@ -183,11 +186,12 @@
                                 HorizontalAlignment="Left"
                                 Fill="{DynamicResource SliderTickForeground}"
                                 IsVisible="False"
-                                Maximum="{TemplateBinding Slider.Maximum}"
-                                Minimum="{TemplateBinding Slider.Minimum}"
-                                Orientation="{TemplateBinding Slider.Orientation}"
+                                Maximum="{TemplateBinding Maximum}"
+                                Minimum="{TemplateBinding Minimum}"
+                                Orientation="{TemplateBinding Orientation}"
                                 Placement="Right"
-                                TickFrequency="{TemplateBinding Slider.TickFrequency}"
+                                IsDirectionReversed="{TemplateBinding IsDirectionReversed}"
+                                TickFrequency="{TemplateBinding TickFrequency}"
                                 Ticks="{TemplateBinding Ticks}" />
                             <Track
                                 Name="PART_Track"