agrobot_base/AgroBase/OperationControl/Controls/TemperatureIndicator.xaml

<UserControl x:Class="OperationControl.Controls.TemperatureIndicator"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:conv="clr-namespace:OperationControl.Converters"
             x:Name="Root"
             MinHeight="64" MinWidth="240">
    <UserControl.Resources>
        <!-- Paleta -->
        <SolidColorBrush x:Key="BarBack"   Color="#222"/>
        <SolidColorBrush x:Key="BarBorder" Color="#404040"/>
        <SolidColorBrush x:Key="MarkBrush" Color="#FFFFFF"/>

        <conv:TempRangeToBrushConverter x:Key="TempRangeToBrushConverter"/>
        <conv:TempValueToWidthConverter x:Key="TempValueToWidthConverter"/>
    </UserControl.Resources>

    <Grid Margin="6,4">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="8"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!-- Cabeçalho: Label + Valor grande -->
        <DockPanel Grid.Row="0" LastChildFill="False">
            <TextBlock Text="{Binding Label, ElementName=Root}"
                       Foreground="#DDD" Opacity="0.9"
                       FontSize="13" VerticalAlignment="Center"
                       Margin="0,0,8,0"/>
            <Border Background="#333" CornerRadius="6" Padding="10,2" >
                <TextBlock>
                    <Run Text="{Binding Value, ElementName=Root, StringFormat={}{0:0.0}}"/>
                    <Run Text="{Binding Units, ElementName=Root}"/>
                </TextBlock>
            </Border>
        </DockPanel>

        <!-- Barra de temperatura -->
        <Grid Grid.Row="2">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="4"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <!-- Barra -->
            <Grid Grid.Row="0" Height="20" VerticalAlignment="Center">
                <!-- Fundo / borda -->
                <Border Background="{StaticResource BarBack}"
                        CornerRadius="6"
                        BorderBrush="{StaticResource BarBorder}"
                        BorderThickness="1"/>

                <!-- Faixa dinâmica (cor troca por thresholds) -->
                <Rectangle x:Name="FillRect"
                           RadiusX="6" RadiusY="6"
                           HorizontalAlignment="Left" Height="20">
                    <Rectangle.Fill>
                        <MultiBinding Converter="{StaticResource TempRangeToBrushConverter}">
                            <Binding ElementName="Root" Path="Value"/>
                            <Binding ElementName="Root" Path="WarnStart"/>
                            <Binding ElementName="Root" Path="CritStart"/>
                        </MultiBinding>
                    </Rectangle.Fill>
                    <Rectangle.Width>
                        <MultiBinding Converter="{StaticResource TempValueToWidthConverter}">
                            <Binding ElementName="Root" Path="Value"/>
                            <Binding ElementName="Root" Path="Min"/>
                            <Binding ElementName="Root" Path="Max"/>
                            <Binding RelativeSource="{RelativeSource AncestorType=Grid}" Path="ActualWidth"/>
                        </MultiBinding>
                    </Rectangle.Width>
                </Rectangle>

                <!-- Marcador (triângulo) na ponta do valor -->
                <Grid IsHitTestVisible="False">
                    <Polygon Points="0,0 10,0 5,8"
                             Fill="{StaticResource MarkBrush}"
                             HorizontalAlignment="Left" VerticalAlignment="Top"
                             Margin="0,-8,0,0">
                        <Polygon.RenderTransform>
                            <TranslateTransform x:Name="MarkerTT"/>
                        </Polygon.RenderTransform>
                    </Polygon>
                </Grid>
            </Grid>

            <!-- Escala mínima / máxima (opcional, sutil) -->
            <DockPanel Grid.Row="2" Margin="2,4,2,0" LastChildFill="True" Opacity="0.75">
                <TextBlock Text="{Binding Min, ElementName=Root, StringFormat={}{0:0}}" Foreground="#AAA"/>
                <TextBlock Text="{Binding Max, ElementName=Root, StringFormat={}{0:0}}"
                           Foreground="#AAA" HorizontalAlignment="Right">
                    <TextBlock.RenderTransform>
                        <TranslateTransform X="{Binding ActualWidth, RelativeSource={RelativeSource AncestorType=Grid}}"/>
                    </TextBlock.RenderTransform>
                </TextBlock>
            </DockPanel>
        </Grid>

        <!-- Animação de alerta (leve brilho quando crítico) -->
        <Border Grid.RowSpan="3" CornerRadius="8" Background="#00FFFFFF" x:Name="AlertGlow" IsHitTestVisible="False"/>
    </Grid>
</UserControl>