prs/prs.mobile/comal.timesheets/CustomControls/TimeSelector/TimeButton.xaml

<?xml version="1.0" encoding="utf-8"?>

<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:material="clr-namespace:XF.Material.Forms.UI;assembly=XF.Material"
             xmlns:local="clr-namespace:comal.timesheets"
             x:Class="comal.timesheets.TimeButton">

    <ContentView.Resources>
        <local:TimeSpanFormatter x:Key="TimeSpanFormatter"/>
    </ContentView.Resources>
    <ContentView.ControlTemplate>
        <ControlTemplate>
            <material:MaterialCard 
                x:Name="_frame"
                CornerRadius = "5"
                Elevation = "0"
                Margin = "2"
                HasShadow = "False"
                Padding = "{TemplateBinding Padding}"
                IsClickable = "True"
                IsEnabled="True"
                BackgroundColor="{TemplateBinding ButtonColor}"
                BorderColor="{TemplateBinding BorderColor}"
                Clicked="_frame_OnClicked">
                
                    <material:MaterialLabel 
                        x:Name="_label" 
                        Text="{TemplateBinding Time, Converter={StaticResource TimeSpanFormatter}}" 
                        VerticalOptions="CenterAndExpand" 
                        HorizontalOptions="CenterAndExpand"
                        TypeScale = "{TemplateBinding TypeScale}"
                        HorizontalTextAlignment = "Center"
                        TextColor="{TemplateBinding TextColor}"
                    />
                    
            </material:MaterialCard>
        </ControlTemplate>
    </ContentView.ControlTemplate>

</ContentView>