QuickLook/QuickLook/ViewerWindow.xaml

<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:busyDecorator="clr-namespace:QuickLook.Controls.BusyDecorator"
    xmlns:glassLayer="clr-namespace:QuickLook.Controls.GlassLayer"
    xmlns:converters="clr-namespace:QuickLook.Converters"
    xmlns:controls="clr-namespace:QuickLook.Controls"
    mc:Ignorable="d" x:Class="QuickLook.ViewerWindow" x:Name="mainWindow"
    UseLayoutRounding="True"
    d:DesignWidth="624" d:DesignHeight="700"
    MinWidth="400" MinHeight="200"
    Focusable="False"
    ResizeMode="CanResize"
    BorderBrush="{DynamicResource CaptionBackground}"
    Foreground="{DynamicResource WindowTextForeground}"
    Background="{DynamicResource MainWindowBackground}"
    ShowInTaskbar="False"
    Title="{Binding ElementName=titleAreaText, Path=Text}"
    ShowActivated="False">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/QuickLook.Common;component/Styles/MainWindowStyles.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <converters:WindowStateMaximizedToThicknessConverter x:Key="WindowStateMaximizedToThicknessConverter" />
            <converters:WindowStateNormalToThicknessConverter x:Key="WindowStateNormalToThicknessConverter" />
            <converters:BooleanToVisibilityCollapsedConverter x:Key="BooleanToVisibilityCollapsedConverter" />
            <converters:BooleanToVisibilityHiddenConverter x:Key="BooleanToVisibilityHiddenConverter" />
            <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
        </ResourceDictionary>
    </Window.Resources>
    <WindowChrome.WindowChrome>
        <WindowChrome CaptionHeight="{StaticResource MainWindowCaptionHeight}" CornerRadius="0"
                      GlassFrameThickness=" 1"
                      ResizeBorderThickness="{StaticResource MainWindowResizeThickness}"
                      UseAeroCaptionButtons="False" />
    </WindowChrome.WindowChrome>
    <Window.Style>
        <Style TargetType="Window">
            <Setter Property="BorderThickness" Value="{StaticResource MainWindowShadowMarginThickness}" />
        </Style>
    </Window.Style>
    <Grid x:Name="windowFrameContainer"
          Margin="{Binding ElementName=mainWindow, Path=WindowState, Converter={StaticResource WindowStateMaximizedToThicknessConverter}, ConverterParameter={StaticResource MainWindowResizeThickness}}">
        <Grid x:Name="viewerRootContainer" ZIndex="190">
            <Grid x:Name="windowCaptionContainer" Height="{StaticResource MainWindowCaptionHeight}"
                  VerticalAlignment="Top"
                  ZIndex="100">
                <Grid.Style>
                    <Style TargetType="Grid">
                        <Setter Property="Opacity" Value="1" />
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ContextObject.TitlebarAutoHide, ElementName=mainWindow}" Value="True">
                                <Setter Property="Opacity" Value="0" />
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </Grid.Style>
                <Grid.Resources>
                    <Storyboard x:Key="ShowCaptionContainerStoryboard" Completed="AutoHideCaptionContainer">
                        <DoubleAnimation
                            Storyboard.Target="{Binding Source={x:Reference windowCaptionContainer}}"
                            Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:0.05" />
                    </Storyboard>
                    <Storyboard x:Key="HideCaptionContainerStoryboard">
                        <DoubleAnimationUsingKeyFrames
                            Storyboard.Target="{Binding Source={x:Reference windowCaptionContainer}}"
                            Storyboard.TargetProperty="Opacity">
                            <DoubleAnimationUsingKeyFrames.KeyFrames>
                                <LinearDoubleKeyFrame Value="1" KeyTime="0:0:0" />
                                <LinearDoubleKeyFrame Value="1" KeyTime="0:0:1" />
                                <LinearDoubleKeyFrame Value="0" KeyTime="0:0:1.05" />
                            </DoubleAnimationUsingKeyFrames.KeyFrames>
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </Grid.Resources>
                <glassLayer:GlassLayer OverlayColor="{DynamicResource CaptionBackground}"
                                       BlurredElement="{Binding ElementName=containerPanel}"
                                       ColorOverlayVisibility="{Binding ContextObject.TitlebarColourVisibility, ElementName=mainWindow, Converter={StaticResource BooleanToVisibilityConverter}}"
                                       GlassVisibility="{Binding ContextObject.TitlebarBlurVisibility, ElementName=mainWindow, Converter={StaticResource BooleanToVisibilityConverter}}"
                                       NoiseVisibility="Visible" />
                <DockPanel>
                    <Button DockPanel.Dock="Right" x:Name="buttonCloseWindow"
                            Style="{StaticResource CaptionCloseButtonStyle}" Content="&#xE894;" />
                    <Button DockPanel.Dock="Right" x:Name="buttonWindowStatus"
                            Visibility="{Binding ContextObject.CanResize, ElementName=mainWindow, Converter={StaticResource BooleanToVisibilityConverter}}">
                        <Button.Style>
                            <Style TargetType="Button" BasedOn="{StaticResource CaptionButtonStyle}">
                                <Setter Property="Content" Value="&#xE740;" />
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding WindowState, ElementName=mainWindow}"
                                                 Value="Maximized">
                                        <Setter Property="Content" Value="&#xE73F;" />
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Button.Style>
                    </Button>
                    <Button DockPanel.Dock="Right" x:Name="buttonShare" Style="{StaticResource CaptionButtonStyle}"
                            Content="&#xE72D;" ToolTip="Share" />
                    <Button DockPanel.Dock="Right" x:Name="buttonOpenWith" Style="{StaticResource CaptionButtonStyle}"
                            Content="&#xE7AC;" ToolTip="Open With" />
                    <Button x:Name="buttonOpen" DockPanel.Dock="Right"
                            Style="{StaticResource CaptionTextButtonStyle}">
                        <Button.Content>
                            <TextBlock x:Name="buttonOpenText" VerticalAlignment="Center">
                                Open with <Bold>AppName</Bold>
                            </TextBlock>
                        </Button.Content>
                    </Button>
                    <Button DockPanel.Dock="Left" x:Name="buttonTop" Tag="Auto" ToolTip="Stay on Top">
                        <Button.Resources>
                            <Grid x:Key="ContentTop">
                                <TextBlock>&#xE898;</TextBlock>
                                <TextBlock>&#xE872;</TextBlock>
                            </Grid>
                        </Button.Resources>
                        <Button.Style>
                            <Style TargetType="Button" BasedOn="{StaticResource CaptionButtonStyle}">
                                <Setter Property="Content" Value="&#xE898;" />
                                <Style.Triggers>
                                    <Trigger Property="Tag" Value="Auto">
                                        <Setter Property="Content" Value="&#xE898;" />
                                    </Trigger>
                                    <Trigger Property="Tag" Value="Top">
                                        <Setter Property="Content" Value="{StaticResource ContentTop}" />
                                    </Trigger>
                                </Style.Triggers>
                            </Style>
                        </Button.Style>
                    </Button>
                    <Button DockPanel.Dock="Left" x:Name="buttonPin" Tag="Auto" ToolTip="Prevent Closing">
                        <Button.Resources>
                            <Grid x:Key="ContentPin">
                                <TextBlock>&#xE840;</TextBlock>
                                <TextBlock>&#xE842;</TextBlock>
                            </Grid>
                        </Button.Resources>
                        <Button.Style>
                            <Style TargetType="Button" BasedOn="{StaticResource CaptionButtonStyle}">
                                <Setter Property="Content" Value="&#xE840;" />
                                <Style.Triggers>
                                    <Trigger Property="Tag" Value="Auto">
                                        <Setter Property="Content" Value="&#xE840;" />
                                    </Trigger>
                                    <Trigger Property="Tag" Value="Pin">
                                        <Setter Property="Content" Value="{StaticResource ContentPin}" />
                                    </Trigger>
                                </Style.Triggers>
                            </Style>
                        </Button.Style>
                    </Button>
                    <Grid x:Name="titleArea" Background="Transparent">
                        <TextBlock x:Name="titleAreaText" Text="{Binding ContextObject.Title, ElementName=mainWindow}" FontSize="12"
                                   HorizontalAlignment="Left" TextTrimming="CharacterEllipsis"
                                   VerticalAlignment="Center" Margin="5,0" />
                    </Grid>
                </DockPanel>
            </Grid>
            <DockPanel x:Name="containerPanel" ZIndex="80">
                <Grid DockPanel.Dock="Top" Height="{StaticResource MainWindowCaptionHeight}"
                      Visibility="{Binding ContextObject.TitlebarOverlap, ElementName=mainWindow, Converter={StaticResource BooleanToVisibilityCollapsedConverter}}" />
                <ContentControl x:Name="container"
                                Visibility="{Binding ElementName=mainWindow, Path=ContextObject.IsBusy, Converter={StaticResource BooleanToVisibilityHiddenConverter}}"
                                Foreground="{DynamicResource WindowTextForeground}"
                                Content="{Binding ContextObject.ViewerContent, ElementName=mainWindow}" />
            </DockPanel>
        </Grid>
        <Grid x:Name="busyIndicatorLayer" ZIndex="200" 
              Visibility="{Binding ElementName=mainWindow, Path=ContextObject.IsBusy, Converter={StaticResource BooleanToVisibilityConverter}}">
            <busyDecorator:BusyDecorator x:Name="busyDecorator"
                                         IsBusyIndicatorShowing="{Binding ElementName=mainWindow, Path=ContextObject.IsBusy}"
                                         VerticalAlignment="Center"
                                         HorizontalAlignment="Center" />
        </Grid>
    </Grid>
</Window>