Add syntax highlight (#4)

* Add syntax highlight handler

* Change to AvalonEdit

* add nuget restore

* fix solution path

* skip build UWP package

Author: shibayan

appveyor.yml

@@ -24,7 +24,11 @@ platform: Any CPU
 
 configuration: Release
 
+before_build:
+  - nuget restore .\src\WinQuickLook.sln
+
 build:
+  project: .\src\WinQuickLook\WinQuickLook.csproj
   verbosity: minimal
 
 artifacts:

src/WinQuickLook/Handlers/SyntaxHighlightPreviewHandler.cs

@@ -0,0 +1,33 @@
+using System.IO;
+using System.Windows;
+using System.Windows.Media;
+
+using ICSharpCode.AvalonEdit.Highlighting;
+
+namespace WinQuickLook.Handlers
+{
+    public class SyntaxHighlightPreviewHandler : PreviewHandlerBase
+    {
+        public override bool CanOpen(string fileName)
+        {
+            return HighlightingManager.Instance.GetDefinitionByExtension(Path.GetExtension(fileName)) != null;
+        }
+
+        public override FrameworkElement GetElement(string fileName)
+        {
+            var avalonEdit = new ICSharpCode.AvalonEdit.TextEditor();
+
+            avalonEdit.BeginInit();
+
+            avalonEdit.FontFamily = new FontFamily("Consolas");
+            avalonEdit.FontSize = 14;
+            avalonEdit.IsReadOnly = true;
+            avalonEdit.Load(fileName);
+            avalonEdit.SyntaxHighlighting = HighlightingManager.Instance.GetDefinitionByExtension(Path.GetExtension(fileName));
+
+            avalonEdit.EndInit();
+
+            return avalonEdit;
+        }
+    }
+}

src/WinQuickLook/QuickLookWindow.xaml.cs

@@ -39,6 +39,7 @@ public QuickLookWindow()
             new VideoPreviewHandler(),
             new AudioPreviewHandler(),
             new HtmlPreviewHandler(),
+            new SyntaxHighlightPreviewHandler(),
             new TextPreviewHandler(),
             new ComInteropPreviewHandler(),
             new GenericPreviewHandler()

src/WinQuickLook/WinQuickLook.csproj

@@ -42,6 +42,10 @@
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="ICSharpCode.AvalonEdit, Version=5.0.3.0, Culture=neutral, PublicKeyToken=9cc39be672370310, processorArchitecture=MSIL">
+      <HintPath>..\packages\AvalonEdit.5.0.3\lib\Net40\ICSharpCode.AvalonEdit.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
@@ -77,6 +81,7 @@
     <Compile Include="Converters\FileNameToTypeNameConverter.cs" />
     <Compile Include="Converters\FileInfoToFileSizeConverter.cs" />
     <Compile Include="Handlers\AudioPreviewHandler.cs" />
+    <Compile Include="Handlers\SyntaxHighlightPreviewHandler.cs" />
     <Compile Include="Handlers\ComInteropPreviewHandler.cs" />
     <Compile Include="Handlers\HtmlPreviewHandler.cs" />
     <Compile Include="Handlers\ImagePreviewHandler.cs" />
@@ -129,6 +134,7 @@
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
     <None Include="app.manifest" />
+    <None Include="packages.config" />
     <None Include="Properties\Settings.settings">
       <Generator>SettingsSingleFileGenerator</Generator>
       <LastGenOutput>Settings.Designer.cs</LastGenOutput>
@@ -159,7 +165,6 @@
   <ItemGroup>
     <Resource Include="Icon.ico" />
   </ItemGroup>
-  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

src/WinQuickLook/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="AvalonEdit" version="5.0.3" targetFramework="net461" />
+</packages>