- tweak: UI improvement

Nebula.Launcher/Views/ExceptionView.axaml

@@ -0,0 +1,46 @@
+<UserControl
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    mc:Ignorable="d"
+    x:Class="Nebula.Launcher.Views.ExceptionView"
+    x:DataType="system:Exception"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:system="clr-namespace:System;assembly=System.Runtime"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <Design.DataContext>
+        <system:Exception />
+    </Design.DataContext>
+    <Border
+        BoxShadow="{StaticResource DefaultShadow}"
+        CornerRadius="5"
+        Margin="0,0,0,5">
+        <Border.Background>
+            <LinearGradientBrush EndPoint="100%,50%" StartPoint="0%,50%">
+                <GradientStop Color="#443333" Offset="0.0" />
+                <GradientStop Color="#333333" Offset="1.0" />
+            </LinearGradientBrush>
+        </Border.Background>
+        <StackPanel>
+            <Border CornerRadius="5,5,0,0">
+                <Border.Background>
+                    <LinearGradientBrush EndPoint="100%,50%" StartPoint="0%,50%">
+                        <GradientStop Color="#FF6B6B" Offset="0.0" />
+                        <GradientStop Color="#FF8E53" Offset="0.3" />
+                        <GradientStop Color="#FF5E3A" Offset="0.6" />
+                        <GradientStop Color="#FF5e5e" Offset="1.0" />
+                    </LinearGradientBrush>
+                </Border.Background>
+                <ScrollViewer>
+                    <Label Margin="4">
+                        <TextBlock Text="{Binding Message}" />
+                    </Label>
+                </ScrollViewer>
+            </Border>
+            <Label Margin="4">
+                <TextBlock Text="{Binding StackTrace}" TextWrapping="Wrap" />
+            </Label>
+        </StackPanel>
+    </Border>
+</UserControl>