Decouple some plugins from QuickLook

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/ViewerPanel.GlassLayer.cs

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+// Copyright © 2024 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using QuickLook.Common.Helpers;
+using System;
+using System.ComponentModel;
+using System.Linq;
+using System.Reflection;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+
+namespace QuickLook.Plugin.VideoViewer;
+
+public partial class ViewerPanel : UserControl, IDisposable, INotifyPropertyChanged
+{
+    /// <summary>
+    /// Load and insert the GlassLayer control to the videoControlContainer.
+    /// </summary>
+    private partial void LoadAndInsertGlassLayer()
+    {
+        // Replace XAML with C# dynamic construction
+        // Implementation without dependencies of QuickLook.exe assembly
+
+        //<glassLayer:GlassLayer xmlns:glassLayer='clr-namespace:QuickLook.Controls.GlassLayer;assembly=QuickLook'
+        //                        ColorOverlayVisibility='{Binding ElementName=viewerPanel, Path=HasVideo, Converter={StaticResource BooleanToVisibilityConverter}}'
+        //                        GlassVisibility='{Binding ElementName=viewerPanel, Path=HasVideo, Converter={StaticResource BooleanToVisibilityConverter}}'
+        //                        OverlayColor='{DynamicResource CaptionBackground}'>
+        //    <glassLayer:GlassLayer.Style>
+        //        <Style TargetType='glassLayer:GlassLayer'>
+        //            <Setter Property='BlurredElement' Value='{Binding ElementName=mediaElement}' />
+        //            <Style.Triggers>
+        //                <DataTrigger Binding='{Binding ElementName=viewerPanel, Path=HasVideo}' Value='True'>
+        //                    <Setter Property='BlurredElement' Value='{Binding ElementName=mediaElement}' />
+        //                </DataTrigger>
+        //            </Style.Triggers>
+        //        </Style>
+        //    </glassLayer:GlassLayer.Style>
+        //</glassLayer:GlassLayer>
+
+        try
+        {
+            var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies()
+                .First(a => a.GetName(false).Name == "QuickLook");
+
+            var glassLayerType = loadedAssemblies?.GetType("QuickLook.Controls.GlassLayer.GlassLayer")
+                ?? throw new TypeLoadException
+                (
+                    """
+                    The type 'QuickLook.Controls.GlassLayer.GlassLayer' could not be found in the loaded assembly 'QuickLook.exe'.
+                    Make sure the assembly is correctly loaded and the type exists.
+                    """
+                );
+
+            // glassLayer:GlassLayer
+            var glassLayerInstance = Activator.CreateInstance(glassLayerType);
+
+            // Prepare the `SetBinding` method
+            var setBindingMethod = glassLayerType.GetMethod("SetBinding", BindingFlags.Public | BindingFlags.Instance, null, [typeof(DependencyProperty), typeof(BindingBase)], null);
+
+            // Prepare the `SetResourceReference` method
+            var setResourceReferenceMethod = glassLayerType.GetMethod("SetResourceReference", BindingFlags.Public | BindingFlags.Instance);
+
+            // ColorOverlayVisibility="{Binding ElementName=viewerPanel, Path=HasVideo, Converter={StaticResource BooleanToVisibilityConverter}}"
+            var colorOverlayVisibilityProperty = glassLayerType.GetField("ColorOverlayVisibilityProperty", BindingFlags.Public | BindingFlags.Static)?.GetValue(null)
+                ?? throw new InvalidOperationException("ColorOverlayVisibilityProperty not found.");
+
+            Binding colorOverlayVisibilityBinding = new(nameof(HasVideo))
+            {
+                ElementName = nameof(viewerPanel),
+                Converter = (BooleanToVisibilityConverter)Resources[nameof(BooleanToVisibilityConverter)]
+            };
+
+            setBindingMethod.Invoke(glassLayerInstance, [colorOverlayVisibilityProperty, colorOverlayVisibilityBinding]);
+
+            // GlassVisibility="{Binding ElementName=viewerPanel, Path=HasVideo, Converter={StaticResource BooleanToVisibilityConverter}}"
+            var glassVisibilityProperty = glassLayerType.GetField("GlassVisibilityProperty", BindingFlags.Public | BindingFlags.Static)?.GetValue(null)
+                ?? throw new InvalidOperationException("GlassVisibilityProperty not found.");
+
+            Binding glassVisibilityBinding = new(nameof(HasVideo))
+            {
+                ElementName = nameof(viewerPanel),
+                Converter = (BooleanToVisibilityConverter)Resources[nameof(BooleanToVisibilityConverter)]
+            };
+
+            setBindingMethod.Invoke(glassLayerInstance, [glassVisibilityProperty, glassVisibilityBinding]);
+
+            // OverlayColor="{DynamicResource CaptionBackground}"
+            var overlayColorProperty = glassLayerType.GetField("OverlayColorProperty", BindingFlags.Public | BindingFlags.Static)?.GetValue(null)
+                ?? throw new InvalidOperationException("OverlayColorProperty not found.");
+
+            setResourceReferenceMethod.Invoke(glassLayerInstance, [overlayColorProperty, "CaptionBackground"]);
+
+            // <Style TargetType="glassLayer:GlassLayer">
+            var styleConstructor = typeof(Style).GetConstructor([typeof(Type)]);
+            var style = (Style)styleConstructor.Invoke([glassLayerType]);
+
+            // <Setter Property="BlurredElement" Value="{Binding ElementName=mediaElement}" />
+            var blurredElementProperty = glassLayerType.GetField("BlurredElementProperty", BindingFlags.Public | BindingFlags.Static)?.GetValue(null)
+                ?? throw new InvalidOperationException("BlurredElementProperty not found.");
+
+            var blurredElementSetter = new Setter((DependencyProperty)blurredElementProperty, new Binding()
+            {
+                ElementName = "mediaElement"
+            });
+            style.Setters.Add(blurredElementSetter);
+
+            // <DataTrigger Binding="{Binding ElementName=viewerPanel, Path=HasVideo}" Value="True">
+            var dataTrigger = new DataTrigger()
+            {
+                Binding = new Binding("HasVideo")
+                {
+                    ElementName = "viewerPanel"
+                },
+                Value = true,
+            };
+
+            var dataTriggerSetter = new Setter((DependencyProperty)blurredElementProperty, new Binding()
+            {
+                ElementName = "mediaElement"
+            });
+            dataTrigger.Setters.Add(dataTriggerSetter);
+
+            style.Triggers.Add(dataTrigger);
+
+            // <glassLayer:GlassLayer.Style>
+            glassLayerType.GetProperty(nameof(Style)).SetValue(glassLayerInstance, style);
+
+            // Insert `glassLayer:GlassLayer` to `videoControlContainer` in XAML
+            videoControlContainer.Children.Insert(0, (UIElement)glassLayerInstance);
+        }
+        catch (Exception e)
+        {
+            ProcessHelper.WriteLog(e.ToString());
+        }
+    }
+}