frozenassassine/textcontrolbox-uwp

A UWP based textbox with Syntaxhighlighting and support for very large amounts of text

TextControlBox-UWP

🤔 What is TextControlBox?

A UWP based textbox with syntaxhighlighting and support for very large amount of text which is still in development.

Reason why I built it

UWP has a default Textbox and a RichTextBox. Both of them are very slow in rendering multiple thousand lines. The selection works also very slow. So I decided to create my own version of a Textbox.

📥 Download

🔍 Features:

• Viewing files with a million lines or more without performance issues
• Syntaxhighlighting
• Outstanding performance because it only renders the lines that are needed to display
• Linenumbering
• Linehighlighter
• Json to create custom syntaxhighlighting
• Highly customizable

❗ Problems:

• Current text limit is 100 million characters
• Currently there is no textwrapping
• First version for WinUI with many problems and bugs, but working Github

🚩 Available languages:

• Batch
• Config file
• C++
• C#
• CSV
• CSS
• GCode
• Hex
• Html
• Java
• Javascript
• Json
• Markdown
• LaTex
• PHP
• Python
• QSharp
• Toml
• Xml

🚀 Usage:

Properties

- ScrollBarPosition (get/set)
- CharacterCount (get)
- NumberOfLines (get)
- CurrentLineIndex (get)
- SelectedText (get/set)
- SelectionStart (get/set)
- SelectionLength (get/set)
- ContextFlyoutDisabled (get/set)
- ContextFlyout (get/set)
- CursorSize (get/set)
- ShowLineNumbers (get/set)
- ShowLineHighlighter (get/set)
- ZoomFactor (get/set)
- IsReadonly (get/set)
- Text (get/set)
- RenderedFontSize (get)
- FontSize (get/set)
- FontFamily (get/set)
- Cursorposition (get/set)
- SpaceBetweenLineNumberAndText (get/set)
- LineEnding (get/set)
- SyntaxHighlighting (get/set)
- CodeLanguage (get/set)
- RequestedTheme (get/set)
- Design (get/set)
- static CodeLanguages (get/set) 
- VerticalScrollSensitivity (get/set)
- HorizontalScrollSensitivity (get/set)
- VerticalScroll (get/set)
- HorizontalScroll (get/set)
- CornerRadius (get/set)
- UseSpacesInsteadTabs (get/set)
- NumberOfSpacesForTab (get/set)

Functions

- SelectLine(index)
- GoToLine(index)
- SetText(text)
- LoadText(text)
- Paste()
- Copy()
- Cut()
- GetText()
- SetSelection(start, length)
- SelectAll()
- ClearSelection()
- Undo()
- Redo()
- ScrollLineToCenter(line)
- ScrollOneLineUp()
- ScrollOneLineDown()
- ScrollLineIntoView(line)
- ScrollTopIntoView()
- ScrollBottomIntoView()
- ScrollPageUp()
- ScrollPageDown()
- GetLineContent(line)
- GetLinesContent(startline, count)
- SetLineContent(line, text)
- DeleteLine(line)
- AddLine(position, text)
- FindInText(pattern)
- SurroundSelectionWith(value)
- SurroundSelectionWith(value1, value2)
- DuplicateLine(line)
- FindInText(word, up, matchCase, wholeWord)
- ReplaceInText(word, replaceword, up, matchCase, wholeword)
- ReplaceAll(word, replaceword, up, matchCase, wholeword)
- static GetCodeLanguageFromJson(jsondata)
- static SelectCodeLanguageById(identifier)
- Unload()
- ClearUndoRedoHistory()

Create custom syntaxhighlighting languages with json:

{
  "Highlights": [
    {
      "CodeStyle": { //optional delete when not used
        "Bold": true, 
        "Underlined": true, 
        "Italic": true
      },
      "Pattern": "REGEX PATTERN",
      "ColorDark": "#ffffff", //color in dark theme
      "ColorLight": "#000000" //color in light theme
    },
  ],
  "Name": "NAME",
  "Filter": "EXTENSION1|EXTENSION2", //.cpp|.c
  "Description": "DESCRIPTION",
  "Author": "AUTHOR"
}  

To bind it to the textbox you can use one of these ways:

TextControlBox textbox = new TextControlBox();

//Use a builtin language -> see list a bit higher
//Language identifiers are case intensitive
textbox.CodeLanguage = TextControlBox.GetCodeLanguageFromId("CSharp");

//Use a custom language:
var result = TextControlBox.GetCodeLanguageFromJson("JSON DATA");
if(result.Succeed)
     textbox.CodeLanguage = result.CodeLanguage; 

Create custom designs in C#:

textbox.Design = new TextControlBoxDesign(
    new SolidColorBrush(Color.FromArgb(255, 30, 30, 30)), //Background brush
    Color.FromArgb(255, 255, 255, 255), //Text color
    Color.FromArgb(100, 0, 100, 255), //Selection color
    Color.FromArgb(255, 255, 255, 255), //Cursor color
    Color.FromArgb(50, 100, 100, 100), //Linehighlighter color
    Color.FromArgb(255, 100, 100, 100), //Linenumber color
    Color.FromArgb(0, 0, 0, 0), //Linenumber background
    Color.FromArgb(100,255,150,0) //Search highlight color
    );

👨‍👩‍👧‍👦 Contributors:

If you want to contribute for this project, feel free to open an issue or a pull request.

📸 Images

textcontrolbox-uwp's Issues

Enter not deleting selection

If enter gets pressed, the selection wont be deleted and instead a new line gets inserted and the selected content stays

Make not every character count as single undo

Every pressed key counts as a single undo, minimize this to enter and space presses

Can not select text by using Shift + ArrowKeys

Implement Undo for Tab key

Completely remake the AddNewLine function

The AddNewLine function is full of problems and needs a redo

Scroll vertical if typing reaches end of viewport

Add Undo for Delete Key

Entering from characters using Ctrl + Alt + [Key] doesn't work

If all text is selected overwriting doesn't work

If all text gets selected by pressing Ctrl + A and any character or Ctrl + V gets pressed the selected text gets removed but the entered character or the clipboard won't get pasted

Undo forgets one line in Remove and Replace function in Selection.cs

Select first line to last line(the character position doesn't matter) and press delete or press any character.

After pressing Ctrl + Z for Undo the last line is missing in Undo

Undo for DeleteText doesn't readds the last line

Undo for NewLine doesn't work properly

Scroll when selection to left/right

Scroll the text horizontally when selecting

Scroll on enter in end of textbox

Scroll to the last inserted line if enter gets pressed at the bottom of the textbox, to make the inserted line visible

OutOfRange exception in CalculateStepsToMoveLeft function

TextControlBox-UWP/TextControlBox-TestApp/TextControlBox/Helper/Cursor.cs

Line 224 in 225e471

char CurrentCharacter = CurrentLine.Content[i];

Fix OutOfRange exceptions

Fix OutOfRange exceptions in TotalLines-list by using functions with OutOfRange-check, instead the direct index accessor

OutOfRange exception in AddCharacter in TextControlBox.xaml.cs

TextControlBox-UWP/TextControlBox-TestApp/TextControlBox/TextControlBox.xaml.cs

Line 226 in 2dd7b69

DeleteCount = EndLine.CharacterPosition == TotalLines[EndLine.LineNumber].Length ? 0 : 1;

Tab moves selection further after reaching end of line

When reaching end of line by using Shift + Tab the selection moves further back

Ending selection over Canvas_Linenumber is not working

Emoji-window doesn't input emojis

The emoji-window doesn't input color-emojis or ASCII-emojis to the textbox

First line selection doesn't work

The first line can not get selected for its own. just with another line selected too

OutOfRange exception in ReplaceUndo function

RemoveRange throws OutOfRange exception in ReplaceUndo in Selection.cs

Add public function to change zoom

Delete selected text from last line forgets last line in Undo

Select text from bottom to anywhere without fully selecting the selection end-line -> Delete -> Undo:

The line, which was not selected completely, stays

Implement Redo & Undo

Horizontal scroll doesn't affect cursorposition

The cursor doesn't calculate the position relative to the horizontal scrolling

Add events

Add events

• Textchanged
• Selectionchanged
• Zoomchanged

Delete key removes whole line when pressing delete at the end of line

Introduce new Length accessor in Line class

Introduce a new accessor in the Line class which returns the lenght of the Content value

Add Undo for remove key

OutOfRange-exception in GetSelectedText in Selection.cs

Exception in Line between if-statement StartLine == EndLine

Remember the TextSelection/CursorPosition in Undo

Undo after deleting text doesn't remove last line

Implement tab-key functions

Implement functions for the tab-key:

• Tab = insert tab
• Tab on selected text = insert tab for every line in selection
• Shift + Tab = remove tab
• Shift + Tab on selected text = remove tab in every line in selection

Add text drag/drop

Fix Cursor movement Up/Down using arrow-keys

Fix horizontal scrollbar width to match longest line

Fix selection positions

Fix all the selection positions after Remove, Replace, Insert, Tab, Enter, etc.

Cursor renders at position, that doen't exist in text

The cursor sometimes renders at a position which is greater than the length of TotalLines

Implement a linehighlighter

Wrong cursor placement after Cut and Paste

GetSelectedText (Selection.cs) adds newline after end

Copying the selected text and pasting it behind the copied one, adds a new line to the end of the textbox everytime the text gets pasted

Change the UndoStack to something better

Because the UndoStack can only store 1MB of data, the potential for large Undooperations is pretty weak.

A custom Stack using an Array or a List is a should be a way better alternative here.

Cursor sometimes renders one line lower than it should

Replace text (Selection.cs) in singleline selection with multiline paste doesn't work correctly

Implement Undo for replace selection with Enter-Key

Scroll horizontal if text reaches end of viewport

Enter over selection makes a mess if whole line is selected

Select lines by clicking on a linenumber

Undo of top to bottom selection with delete key doesn't add back all lines

Select some lines from the top to the bottom -> Press Delete -> Press Ctrl + Z: Not all lines are back