Add English and Chinese translations

QuickLook.Plugin/QuickLook.Plugin.TextViewer/Plugin.cs

@@ -70,7 +70,7 @@ namespace QuickLook.Plugin.TextViewer
 
         public void View(string path, ContextObject context)
         {
-            _tvp = new TextViewerPanel(path);
+            _tvp = new TextViewerPanel(path, context);
 
             context.ViewerContent = _tvp;
             context.Title = $"{Path.GetFileName(path)}";

QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj

@@ -90,5 +90,11 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="Translations.lang">
+      <SubType>Designer</SubType>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml

@@ -10,8 +10,7 @@
              d:DesignWidth="448.79"
              UseLayoutRounding="True">
     <Grid>
-        <avalonEdit:TextEditor x:Name="viewer" Background="#00FFFFFF" FontFamily="Consolas" FontSize="14"
+        <avalonEdit:TextEditor x:Name="viewer" Background="#00FFFFFF" FontSize="14" ShowLineNumbers="True"
-                               ShowLineNumbers="True"
                                WordWrap="True" IsReadOnly="True" />
     </Grid>
 </UserControl>

QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml.cs

@@ -16,8 +16,10 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 using System.IO;
+using System.Reflection;
 using System.Text;
 using System.Windows.Controls;
+using System.Windows.Media;
 using ICSharpCode.AvalonEdit.Highlighting;
 using QuickLook.Plugin.TextViewer.SimpleHelpers;
 
@@ -28,10 +30,15 @@ namespace QuickLook.Plugin.TextViewer
     /// </summary>
     public partial class TextViewerPanel : UserControl
     {
-        public TextViewerPanel(string path)
+        public TextViewerPanel(string path, ContextObject context)
         {
             InitializeComponent();
 
+            viewer.FontFamily =
+                new FontFamily(context.GetString(
+                    Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"Translations.lang"),
+                    "Editor_FontFamily", failsafe: "Consolas"));
+
             LoadFile(path);
         }
 

QuickLook.Plugin/QuickLook.Plugin.TextViewer/Translations.lang

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Translations>
+  <en>
+    <Editor_FontFamily>Consolas</Editor_FontFamily>
+  </en>
+  <zh-CN>
+    <Editor_FontFamily>Consolas,Microsoft Yahei UI,Microsoft Yahei,SimSun</Editor_FontFamily>
+  </zh-CN>
+  <ja-JP>
+    <Editor_FontFamily>Consolas,Meiryo UI,MS UI Gothic,MS Gothic</Editor_FontFamily>
+  </ja-JP>
+</Translations>

QuickLook/App.xaml.cs

@@ -36,6 +36,8 @@ namespace QuickLook
         public static readonly string AppFullPath = Assembly.GetExecutingAssembly().Location;
         public static readonly string AppPath = Path.GetDirectoryName(AppFullPath);
 
+        internal static readonly string Translations = Path.Combine(AppPath, @"Translations.lang");
+
         private bool _isFirstInstance;
         private Mutex _isRunning;
 
@@ -62,7 +64,7 @@ namespace QuickLook
                     RemoteCallShowPreview(e);
                 // second instance: duplicate
                 else
-                    MessageBox.Show("QuickLook is already running in the background.");
+                    MessageBox.Show(TranslationHelper.GetString(Translations, "APP_SECOND"));
 
                 Shutdown();
                 return;
@@ -84,7 +86,8 @@ namespace QuickLook
         {
             TrayIconManager.GetInstance();
             if (!e.Args.Contains("/autorun") && !IsUWP)
-                TrayIconManager.GetInstance().ShowNotification("", "QuickLook is running in the background.");
+                TrayIconManager.GetInstance()
+                    .ShowNotification("", TranslationHelper.GetString(Translations, "APP_START"));
             if (e.Args.Contains("/first"))
                 AutoStartupHelper.CreateAutorunShortcut();
 

QuickLook/Helpers/AutoStartupHelper.cs

@@ -23,7 +23,7 @@ namespace QuickLook.Helpers
 {
     internal static class AutoStartupHelper
     {
-        private static readonly string _startupFullPath = Path.Combine(
+        private static readonly string StartupFullPath = Path.Combine(
             Environment.GetFolderPath(Environment.SpecialFolder.Startup),
             Path.ChangeExtension(Path.GetFileName(App.AppFullPath), ".lnk"));
 
@@ -34,11 +34,11 @@ namespace QuickLook.Helpers
 
             try
             {
-                File.Create(_startupFullPath).Close();
+                File.Create(StartupFullPath).Close();
 
                 var shl = new Shell();
-                var dir = shl.NameSpace(Path.GetDirectoryName(_startupFullPath));
+                var dir = shl.NameSpace(Path.GetDirectoryName(StartupFullPath));
-                var itm = dir.Items().Item(Path.GetFileName(_startupFullPath));
+                var itm = dir.Items().Item(Path.GetFileName(StartupFullPath));
                 var lnk = (ShellLinkObject) itm.GetLink;
 
                 lnk.Path = App.AppFullPath;
@@ -46,7 +46,7 @@ namespace QuickLook.Helpers
                 lnk.SetIconLocation(App.AppFullPath, 0);
                 lnk.WorkingDirectory = App.AppPath;
 
-                lnk.Save(_startupFullPath);
+                lnk.Save(StartupFullPath);
             }
             catch (Exception)
             {
@@ -59,7 +59,7 @@ namespace QuickLook.Helpers
             if (App.IsUWP)
                 return;
 
-            File.Delete(_startupFullPath);
+            File.Delete(StartupFullPath);
         }
 
         internal static bool IsAutorun()
@@ -67,7 +67,7 @@ namespace QuickLook.Helpers
             if (App.IsUWP)
                 return true;
 
-            return File.Exists(_startupFullPath);
+            return File.Exists(StartupFullPath);
         }
     }
 }

QuickLook/Helpers/TranslationHelper.cs

@@ -0,0 +1,67 @@
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Xml.XPath;
+
+namespace QuickLook.Helpers
+{
+    internal class TranslationHelper
+    {
+        private static readonly CultureInfo CurrentCultureInfo = CultureInfo.CurrentUICulture;
+        //private static readonly CultureInfo CurrentCultureInfo = CultureInfo.GetCultureInfo("zh-CN");
+
+        private static readonly Dictionary<string, XPathNavigator> FileCache = new Dictionary<string, XPathNavigator>();
+        private static readonly Dictionary<string, string> StringCache = new Dictionary<string, string>();
+
+        public static string GetString(string file, string id, CultureInfo locale = null, string failsafe = null)
+        {
+            if (!File.Exists(file))
+                return failsafe ?? id;
+
+            if (locale == null)
+                locale = CurrentCultureInfo;
+
+            var nav = GetLangFile(file);
+
+            // try to get string
+            var s = GetStringFromXml(nav, id, locale);
+            if (s != null)
+                return s;
+
+            // try again for parent language
+            if (locale.Parent.Name != string.Empty)
+                s = GetStringFromXml(nav, id, locale.Parent);
+            if (s != null)
+                return s;
+
+            // use fallback language
+            s = GetStringFromXml(nav, id, CultureInfo.GetCultureInfo("en"));
+            if (s != null)
+                return s;
+
+            return failsafe ?? id;
+        }
+
+        private static string GetStringFromXml(XPathNavigator nav, string id, CultureInfo locale)
+        {
+            var cacheKey = $"{locale.Name}::{id}";
+            if (StringCache.ContainsKey(cacheKey))
+                return StringCache[cacheKey];
+
+            var result = nav.SelectSingleNode($@"/Translations/{locale.Name}/{id}");
+            StringCache.Add(cacheKey, result?.Value);
+
+            return result?.Value;
+        }
+
+        private static XPathNavigator GetLangFile(string file)
+        {
+            if (FileCache.ContainsKey(file))
+                return FileCache[file];
+
+            var res = new XPathDocument(file).CreateNavigator();
+            FileCache.Add(file, res);
+            return res;
+        }
+    }
+}

QuickLook/Helpers/Updater.cs

@@ -53,7 +53,7 @@ namespace QuickLook.Helpers
                         if (!silent)
                             Application.Current.Dispatcher.Invoke(
                                 () => TrayIconManager.GetInstance().ShowNotification("",
-                                    "You are now on the latest version."));
+                                    TranslationHelper.GetString(App.Translations, "Update_NoUpdate")));
                         return;
                     }
 
@@ -67,7 +67,7 @@ namespace QuickLook.Helpers
                         {
                             ViewWindowManager.GetInstance().InvokeViewer(changeLogPath);
                             TrayIconManager.GetInstance().ShowNotification("",
-                                $"New version {nVersion} is released. Click here to open the download page.",
+                                string.Format(TranslationHelper.GetString(App.Translations, "Update_Found"), nVersion),
                                 clickEvent: () => Process.Start(
                                     @"https://github.com/xupefei/QuickLook/releases/latest"));
                         });
@@ -77,7 +77,7 @@ namespace QuickLook.Helpers
                     Debug.WriteLine(e.Message);
                     Application.Current.Dispatcher.Invoke(
                         () => TrayIconManager.GetInstance().ShowNotification("",
-                            $"Error occured when checking for updates: {e.Message}"));
+                            string.Format(TranslationHelper.GetString(App.Translations, "Update_Error"), e.Message)));
                 }
             });
         }

QuickLook/MainWindowTransparent.xaml

@@ -14,8 +14,7 @@
     WindowStartupLocation="CenterScreen"
     Focusable="False" WindowStyle="None"
     Background="#E5FAFAFA" AllowsTransparency="True"
-    ShowActivated="False" ShowInTaskbar="False"
+    ShowActivated="False" ShowInTaskbar="False">
-    FontFamily="Segoe UI,Microsoft Yahei UI">
     <Window.Resources>
         <converters:BooleanToResizeModeConverter x:Key="BooleanToResizeModeConverter" />
         <converters:BooleanToResizeBorderThicknessConverter x:Key="BooleanToResizeBorderThicknessConverter" />

QuickLook/MainWindowTransparent.xaml.cs

@@ -21,6 +21,7 @@ using System.IO;
 using System.Runtime.ExceptionServices;
 using System.Windows;
 using System.Windows.Input;
+using System.Windows.Media;
 using System.Windows.Threading;
 using QuickLook.Helpers;
 using QuickLook.Helpers.BlurLibrary;
@@ -40,6 +41,9 @@ namespace QuickLook
 
             InitializeComponent();
 
+            FontFamily =
+                new FontFamily(TranslationHelper.GetString(App.Translations, "UI_FontFamily", failsafe: "Segoe UI"));
+
             SourceInitialized += (sender, e) =>
             {
                 if (AllowsTransparency)
@@ -177,11 +181,13 @@ namespace QuickLook
 
             buttonOpenWith.Content = isExe == null
                 ? Directory.Exists(PreviewPath)
-                    ? $"Browse “{Path.GetFileName(PreviewPath)}”"
+                    ? string.Format(TranslationHelper.GetString(App.Translations, "MW_BrowseFolder"),
-                    : "Open..."
+                        Path.GetFileName(PreviewPath))
+                    : string.Format(TranslationHelper.GetString(App.Translations, "MW_Open"),
+                        Path.GetFileName(PreviewPath))
                 : isExe == true
-                    ? $"Run “{appFriendlyName}”"
+                    ? string.Format(TranslationHelper.GetString(App.Translations, "MW_Run"), appFriendlyName)
-                    : $"Open with “{appFriendlyName}”";
+                    : string.Format(TranslationHelper.GetString(App.Translations, "MW_OpenWith"), appFriendlyName);
         }
 
         internal void BeginHide()

QuickLook/Plugin/ContextObject.cs

@@ -17,6 +17,7 @@
 
 using System;
 using System.ComponentModel;
+using System.Globalization;
 using System.Runtime.CompilerServices;
 using System.Windows;
 using QuickLook.Annotations;
@@ -126,6 +127,14 @@ namespace QuickLook.Plugin
 
         public event PropertyChangedEventHandler PropertyChanged;
 
+        /// <summary>
+        ///     Get a string from translation Xml document.
+        /// </summary>
+        public string GetString(string file, string id, CultureInfo locale = null, string failsafe = null)
+        {
+            return TranslationHelper.GetString(file, id, locale, failsafe);
+        }
+
         /// <summary>
         ///     Show a notification balloon.
         /// </summary>

QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs

@@ -20,6 +20,7 @@ using System.Globalization;
 using System.IO;
 using System.Threading.Tasks;
 using System.Windows.Controls;
+using QuickLook.Helpers;
 
 namespace QuickLook.Plugin.InfoPanel
 {
@@ -61,7 +62,8 @@ namespace QuickLook.Plugin.InfoPanel
             filename.Text = string.IsNullOrEmpty(name) ? path : name;
 
             var last = File.GetLastWriteTime(path);
-            modDate.Text = $"Last modified at {last.ToString(CultureInfo.CurrentCulture)}";
+            modDate.Text = string.Format(TranslationHelper.GetString(App.Translations, "InfoPanel_LastModified"),
+                last.ToString(CultureInfo.CurrentCulture));
 
             Stop = false;
 
@@ -83,7 +85,9 @@ namespace QuickLook.Plugin.InfoPanel
                     Dispatcher.Invoke(() =>
                     {
                         totalSize.Text =
-                            $"Capacity {totalSpace.ToPrettySize(2)}, {totalFreeSpace.ToPrettySize(2)} available";
+                            string.Format(TranslationHelper.GetString(App.Translations, "InfoPanel_DriveSize"),
+                                totalSpace.ToPrettySize(2),
+                                totalFreeSpace.ToPrettySize(2));
                     });
                 }
                 else if (Directory.Exists(path))
@@ -95,10 +99,17 @@ namespace QuickLook.Plugin.InfoPanel
                         Dispatcher.Invoke(() =>
                         {
                             string t;
-                            var d = totalDirsL != 0 ? $"{totalDirsL} folders" : string.Empty;
+                            var d = totalDirsL != 0
-                            var f = totalFilesL != 0 ? $"{totalFilesL} files" : string.Empty;
+                                ? string.Format(
+                                    TranslationHelper.GetString(App.Translations, "InfoPanel_Folders"), totalDirsL)
+                                : string.Empty;
+                            var f = totalFilesL != 0
+                                ? string.Format(
+                                    TranslationHelper.GetString(App.Translations, "InfoPanel_Files"), totalFilesL)
+                                : string.Empty;
                             if (!string.IsNullOrEmpty(d) && !string.IsNullOrEmpty(f))
-                                t = $"({d} and {f})";
+                                t = string.Format(
+                                    TranslationHelper.GetString(App.Translations, "InfoPanel_FolderAndFile"), d, f);
                             else if (string.IsNullOrEmpty(d) && string.IsNullOrEmpty(f))
                                 t = string.Empty;
                             else

QuickLook/QuickLook.csproj

@@ -92,6 +92,8 @@
     <Reference Include="System.Xaml">
       <RequiredTargetFramework>4.0</RequiredTargetFramework>
     </Reference>
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Xml.Linq" />
     <Reference Include="WindowsBase" />
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
@@ -133,6 +135,7 @@
     <Compile Include="Helpers\BlurLibrary\PlatformsImpl\WindowsVistaWindowBlurController.cs" />
     <Compile Include="Helpers\FileHelper.cs" />
     <Compile Include="Helpers\ProcessHelper.cs" />
+    <Compile Include="Helpers\TranslationHelper.cs" />
     <Compile Include="MainWindowNoTransparent.cs" />
     <Compile Include="PipeServerManager.cs" />
     <Compile Include="PluginManager.cs" />
@@ -253,6 +256,12 @@
       <EmbedInteropTypes>True</EmbedInteropTypes>
     </COMReference>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="Translations.lang">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <SubType>Designer</SubType>
+    </None>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>"$(SolutionDir)Scripts\update-version.cmd" "$(SolutionDir)" "$(SolutionDir)GitVersion.cs"</PreBuildEvent>

QuickLook/Translations.lang

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Translations>
+  <en>
+    <UI_FontFamily>Segoe UI</UI_FontFamily>
+    <APP_START>QuickLook is running in the background.</APP_START>
+    <APP_SECOND>QuickLook is already running in the background.</APP_SECOND>
+    <MW_BrowseFolder>Browse “{0}”</MW_BrowseFolder>
+    <MW_Open>Open “{0}”</MW_Open>
+    <MW_OpenWith>Open with “{0}”</MW_OpenWith>
+    <MW_Run>Run “{0}”</MW_Run>
+    <Icon_RunAtStartup>Run at &amp;Startup</Icon_RunAtStartup>
+    <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
+    <Icon_CheckUpdate>Check for &amp;Updates...</Icon_CheckUpdate>
+    <Icon_Quit>&amp;Quit</Icon_Quit>
+    <Update_NoUpdate>You are now on the latest version.</Update_NoUpdate>
+    <Update_Found>New version {0} is released. Click here to open the download page.</Update_Found>
+    <Update_Error>Error occured when checking for updates: {0}</Update_Error>
+    <InfoPanel_LastModified>Last modified at {0}</InfoPanel_LastModified>
+    <InfoPanel_DriveSize>Capacity {0}, {1} available</InfoPanel_DriveSize>
+    <InfoPanel_Folders>{0} folders</InfoPanel_Folders>
+    <InfoPanel_Files>{0} files</InfoPanel_Files>
+    <InfoPanel_FolderAndFile>({0} and {1})</InfoPanel_FolderAndFile>
+  </en>
+  <zh-CN>
+    <UI_FontFamily>Segoe UI,Microsoft Yahei UI,Microsoft Yahei,SimSun</UI_FontFamily>
+    <APP_START>QuickLook 正在后台运行。</APP_START>
+    <APP_SECOND>另一个 QuickLook 进程正在运行。</APP_SECOND>
+    <MW_BrowseFolder>浏览 “{0}”</MW_BrowseFolder>
+    <MW_Open>打开 “{0}”</MW_Open>
+    <MW_OpenWith>用 “{0}” 打开</MW_OpenWith>
+    <MW_Run>运行 “{0}”</MW_Run>
+    <Icon_RunAtStartup>启动时自动运行 (&amp;S)</Icon_RunAtStartup>
+    <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
+    <Icon_CheckUpdate>检查更新... (&amp;U)</Icon_CheckUpdate>
+    <Icon_Quit>退出 (&amp;Q)</Icon_Quit>
+    <Update_NoUpdate>您已使用了最新版本。</Update_NoUpdate>
+    <Update_Found>发现新版本 {0}。点击这里打开下载页面。</Update_Found>
+    <Update_Error>检查更新时发生错误：{0}</Update_Error>
+    <InfoPanel_LastModified>最后修改于 {0}</InfoPanel_LastModified>
+    <InfoPanel_DriveSize>总容量 {0}，可用 {1}</InfoPanel_DriveSize>
+    <InfoPanel_Folders>{0} 个目录</InfoPanel_Folders>
+    <InfoPanel_Files>{0} 个文件</InfoPanel_Files>
+    <InfoPanel_FolderAndFile>(含 {0}和 {1})</InfoPanel_FolderAndFile>
+  </zh-CN>
+</Translations>

QuickLook/TrayIconManager.cs

@@ -29,7 +29,8 @@ namespace QuickLook
         private readonly NotifyIcon _icon;
 
         private readonly MenuItem _itemAutorun =
-            new MenuItem("Run at &Startup", (sender, e) =>
+            new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_RunAtStartup"),
+                (sender, e) =>
                 {
                     if (AutoStartupHelper.IsAutorun())
                         AutoStartupHelper.RemoveAutorunShortcut();
@@ -41,17 +42,19 @@ namespace QuickLook
         {
             _icon = new NotifyIcon
             {
-                Text = $"QuickLook v{Application.ProductVersion}",
+                Text = string.Format(TranslationHelper.GetString(App.Translations, "Icon_ToolTip"),
+                    Application.ProductVersion),
                 Icon = Resources.app,
                 Visible = true,
                 ContextMenu = new ContextMenu(new[]
                 {
                     new MenuItem($"v{Application.ProductVersion}") {Enabled = false},
                     new MenuItem("-"),
-                    new MenuItem("Check for &Updates...",
+                    new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_CheckUpdate"),
                         (sender, e) => Updater.CheckForUpdates()) {Enabled = !App.IsUWP},
                     _itemAutorun,
-                    new MenuItem("&Quit", (sender, e) => System.Windows.Application.Current.Shutdown())
+                    new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_Quit"),
+                        (sender, e) => System.Windows.Application.Current.Shutdown())
                 })
             };