Merge branch 'v3.7_dark_mode' into master

Author: elvirbrk

NoteHighlightAddin/AddIn.cs

@@ -48,6 +48,8 @@ protected Application OneNoteApplication
 
         private bool QuickStyle { get; set; }
 
+        private bool DarkMode { get; set; }
+
         public AddIn()
 		{
 		}
@@ -151,6 +153,20 @@ public void cbQuickStyle_OnAction(IRibbonControl control, bool isPressed)
             NoteHighlightForm.Properties.Settings.Default.Save();
         }
 
+
+        public bool cbDarkMode_GetPressed(IRibbonControl control)
+        {
+            this.DarkMode = NoteHighlightForm.Properties.Settings.Default.DarkMode;
+            return this.DarkMode;
+        }
+
+        public void cbDarkMOde_OnAction(IRibbonControl control, bool isPressed)
+        {
+            this.DarkMode = isPressed;
+            NoteHighlightForm.Properties.Settings.Default.DarkMode = this.DarkMode;
+            NoteHighlightForm.Properties.Settings.Default.Save();
+        }
+
         //public async Task AddInButtonClicked(IRibbonControl control)
         public void AddInButtonClicked(IRibbonControl control)
         {
@@ -204,7 +220,7 @@ private void ShowForm()
                     }
                 }
 
-                MainForm form = new MainForm(tag, outFileName, selectedText, this.QuickStyle);
+                MainForm form = new MainForm(tag, outFileName, selectedText, this.QuickStyle, this.DarkMode);
 
                 System.Windows.Forms.Application.Run(form);
                 //}
@@ -608,6 +624,14 @@ private XElement PrepareFormatedContent(string htmlContent, HighLightParameter p
                     defaultStyle = item.Substring(0, item.IndexOf(">") + 1);
                     //Sets language to Latin to disable spell check
                     defaultStyle = defaultStyle.Insert(defaultStyle.Length - 1, " lang=la");
+
+                    if (this.DarkMode)
+                    {
+                        //Remove background-color element so that text would render with correct contrast in dark mode
+                        int bcIndex = defaultStyle.IndexOf("background-color");
+                        defaultStyle = defaultStyle.Remove(bcIndex, defaultStyle.IndexOf(';', bcIndex) - bcIndex +1);
+                    }
+
                     item = item.Substring(item.IndexOf(">") + 1);
                 }
 

NoteHighlightAddin/App.config

@@ -22,6 +22,9 @@
       </setting>
       <setting name="QuickStyle" serializeAs="String">
         <value>False</value>
+	  </setting>
+      <setting name="DarkMode" serializeAs="String">
+        <value>True</value>
       </setting>
       <setting name="Font" serializeAs="String">
         <value>Courier New</value>

NoteHighlightAddin/HtmlFragment.cs

@@ -26,7 +26,7 @@ public static void CopyToClipboard(string htmlFragment, string title, Uri source
 
             string header =
                             @"Format:HTML Format
-                            Version:1.0
+                            Version:0.9
                             StartHTML:<<<<<<<1
                             EndHTML:<<<<<<<2
                             StartFragment:<<<<<<<3
@@ -54,10 +54,10 @@ public static void CopyToClipboard(string htmlFragment, string title, Uri source
             int fragmentStart = sb.Length;
 
             sb.Append(htmlFragment);
-            int fragmentEnd = sb.Length;
+            int fragmentEnd = Encoding.UTF8.GetBytes(sb.ToString()).Length;
 
             sb.Append(post);
-            int endHTML = sb.Length;
+            int endHTML = Encoding.UTF8.GetBytes(sb.ToString()).Length;
 
             // Backpatch offsets
             sb.Replace("<<<<<<<1", To8DigitString(startHTML));

NoteHighlightAddin/MainForm.cs

@@ -29,6 +29,7 @@ public partial class MainForm : Form
         private string _fileName;
 
         private HighLightParameter _parameters;
+        private bool _darkMode;
 
         //要HighLight的Code
         private string CodeContent { get { return this.txtCode.Text; } }
@@ -48,21 +49,24 @@ public partial class MainForm : Form
 
         private bool _quickStyle;
 
+        public bool DarkMode { get { return _darkMode; } }
+
         [System.Runtime.InteropServices.DllImport("user32.dll")]
         private static extern bool SetForegroundWindow(IntPtr hWnd);
 
         #endregion
 
         #region -- Constructor --
 
-        public MainForm(string codeType, string fileName, string selectedText, bool quickStyle)
+        public MainForm(string codeType, string fileName, string selectedText, bool quickStyle, bool darkMode)
         {
             _codeType = codeType;
             _fileName = fileName;
             InitializeComponent();
             LoadThemes();
             txtCode.Text = selectedText;
             _quickStyle = quickStyle;
+            _darkMode = darkMode;
 
             if (_quickStyle)
             {
@@ -192,6 +196,15 @@ private void InsertToClipboard(string outputFileName)
                         string byteOrderMarkUtf8 = Encoding.UTF8.GetString(Encoding.UTF8.GetPreamble());
                         line = line.Replace(byteOrderMarkUtf8, "");
 
+                        if (line.StartsWith("<pre") && this.DarkMode)
+                        {
+
+                            //Remove background-color element so that text would render with correct contrast in dark mode
+                            int bcIndex = line.IndexOf("background-color");
+                            line = line.Remove(bcIndex, line.IndexOf(';', bcIndex) - bcIndex + 1);
+                        }
+
+
                         if (!line.StartsWith("</pre>"))
                         {
                             line = line.Replace("\t", "&nbsp;&nbsp;&nbsp;&nbsp;").Replace("&apos;", "'") + "<br />";