ux: Use RepeatButton instead of Button to make ScrollIndicator support PointerPress operation

Author: gadfly3173

src/Resources/Styles.axaml

@@ -230,16 +230,16 @@
     <Setter Property="Background" Value="Red"/>
   </Style>
 
-  <Style Selector="Button.icon_button">
+  <Style Selector="Button.icon_button, RepeatButton.icon_button">
     <Setter Property="BorderThickness" Value="0"/>
     <Setter Property="Background" Value="Transparent"/>
     <Setter Property="VerticalAlignment" Value="Center"/>
   </Style>
-  <Style Selector="Button.icon_button /template/ ContentPresenter#PART_ContentPresenter">
+  <Style Selector="Button.icon_button /template/ ContentPresenter#PART_ContentPresenter, RepeatButton.icon_button /template/ ContentPresenter#PART_ContentPresenter">
     <Setter Property="Background" Value="Transparent"/>
     <Setter Property="Opacity" Value="0.8"/>
   </Style>
-  <Style Selector="Button.icon_button:pointerover /template/ ContentPresenter#PART_ContentPresenter">
+  <Style Selector="Button.icon_button:pointerover /template/ ContentPresenter#PART_ContentPresenter, RepeatButton.icon_button:pointerover /template/ ContentPresenter#PART_ContentPresenter">
     <Setter Property="Opacity" Value="1"/>
   </Style>
 

src/Views/Launcher.axaml

@@ -86,9 +86,9 @@
 
       <!-- Pages Tabs-->
       <Grid x:Name="launcherTabsContainer" Grid.Column="1" Height="30" ColumnDefinitions="Auto,*,Auto" VerticalAlignment="Bottom" SizeChanged="UpdateScrollIndicator">
-        <Button x:Name="leftScrollIndicator" Grid.Column="0" Classes="icon_button" Width="18" Height="30" Click="ScrollTabsLeft">
+        <RepeatButton x:Name="leftScrollIndicator" Grid.Column="0" Classes="icon_button" Width="18" Height="30" Click="ScrollTabsLeft">
           <Path Width="8" Height="14" Stretch="Fill" Data="{StaticResource Icons.TriangleLeft}"/>
-        </Button>
+        </RepeatButton>
 
         <ScrollViewer Grid.Column="1"
                       x:Name="launcherTabsScroller"
@@ -241,9 +241,9 @@
           </StackPanel>
         </ScrollViewer>
 
-        <Button x:Name="rightScrollIndicator" Grid.Column="2" Classes="icon_button" Width="18" Height="30" Click="ScrollTabsRight">
+        <RepeatButton x:Name="rightScrollIndicator" Grid.Column="2" Classes="icon_button" Width="18" Height="30" Click="ScrollTabsRight">
           <Path Width="8" Height="14" Stretch="Fill" Data="{StaticResource Icons.TriangleRight}"/>
-        </Button>
+        </RepeatButton>
       </Grid>
 
       <!-- Caption Buttons (Windows/Linux)-->