/// <summary>
/// calc the line number of the line the TextPointer is located on in the
/// FlowDocument.
/// </summary>
/// <param name="Pointer"></param>
/// <param name="Doc"></param>
/// <returns></returns>
public static int GetLineNumber(this TextPointer Pointer, FlowDocument Doc)
{
TextPointer pointerStart = Pointer.GetLineStartPosition(0);
TextPointer p = Doc.ContentStart.GetLineStartPosition(0);
var p2 = p.GetLineStartPosition(1);
int lineNumber = 0;
while (true)
{
if (pointerStart.CompareTo(p) <= 0)
{
break;
}
p = p.GetLineStartPosition(1);
if (p == null)
{
break;
}
lineNumber++;
}
return(lineNumber);
}
/// <summary>
/// Pad the line of the text pointer to the length specified.
/// </summary>
/// <param name="Doc"></param>
/// <param name="Pointer"></param>
/// <param name="Length"></param>
public static void PadLineToLength(
this TextPointer Pointer, FlowDocument Doc, int Length, char PadChar = ' ')
{
TextPointer tp1 = Pointer.GetLineStartPosition(0);
TextPointer tp2 = Pointer.GetLineStartPosition(1);
if (tp2 != null)
{
tp2 = tp2.GetNextInsertionPosition(LogicalDirection.Backward);
}
else
{
tp2 = Doc.ContentEnd.GetNextInsertionPosition(LogicalDirection.Backward);
}
// current line text.
TextRange r1 = new TextRange(tp1, tp2);
string lineText = r1.Text;
// pad length
string padText = null;
int padLx = Length - lineText.Length;
if (padLx > 0)
{
padText = new StringBuilder().AppendRepeat(PadChar, padLx).ToString();
tp2.InsertTextInRun(padText);
}
}
public static string GetLine(this TextPointer pointer, int index)
{
var start = pointer.GetLineStartPosition(index);
var end = pointer.GetLineStartPosition(index + 1) ?? pointer.DocumentEnd;
var line = new TextRange(start, end);
return(line.Text.Trim());
}
/// <summary>
/// Gets the current line of text in the RichTextBox
/// </summary>
/// <param name="rtb"></param>
/// <returns></returns>
public static String GetCurrentLine(this RichTextBox rtb)
{
TextPointer caretPos = rtb.CaretPosition;
TextPointer start = caretPos.GetLineStartPosition(0);
TextPointer end = (caretPos.GetLineStartPosition(1) != null ? caretPos.GetLineStartPosition(1) : caretPos.DocumentEnd);
TextRange tr = new TextRange(start, end);
return(tr.Text);
}
// Given a RichTextBox, return the line text of the current caret position
public static string Rtb_GetCaretLineText(RichTextBox rtb)
{
TextPointer caretPos = rtb.CaretPosition;
if (caretPos.GetLineStartPosition(1) == null)
{
return("<null>");
}
return(new TextRange(caretPos.GetLineStartPosition(0), caretPos.GetLineStartPosition(1)).Text);
}
private void UpdateCaretPosition()
{
TextPointer caretLineStart = richTextBox_Main.CaretPosition.GetLineStartPosition(0);
TextPointer p = richTextBox_Main.Document.ContentStart.GetLineStartPosition(0);
int columnNumber = Math.Max(richTextBox_Main.CaretPosition.GetLineStartPosition(0).GetOffsetToPosition(richTextBox_Main.CaretPosition) - 1, 0);
int currentLineNumber = 1;
while (true)
{
if (caretLineStart.CompareTo(p) < 0)
{
break;
}
int result;
p = p.GetLineStartPosition(1, out result);
if (result == 0)
{
break;
}
currentLineNumber++;
}
statusBarItem_Position.Content = $"{currentLineNumber}:{columnNumber}";
}
public void GoToLine(int linenumber)
{
if (linenumber == 1)
{
this.CaretPosition = Document.ContentStart.DocumentStart.GetLineStartPosition(0);
}
else
{
TextPointer ls = Document.ContentStart.DocumentStart.GetLineStartPosition(0);
TextPointer p = Document.ContentStart.GetLineStartPosition(0);
int @int = 2;
while (true)
{
int r = 0;
p = p.GetLineStartPosition(1, out r);
if (r == 0)
{
this.CaretPosition = p;
break; // TODO: might not be correct. Was : Exit While
}
if (linenumber == @int)
{
this.CaretPosition = p;
break; // TODO: might not be correct. Was : Exit While
}
@int += 1;
}
}
}
public int GetLineNumber(bool TillEnd = false)
{
TextPointer caretLineStart = MainRichTextBox.CaretPosition.GetLineStartPosition(0);
TextPointer p = MainRichTextBox.Document.ContentStart.GetLineStartPosition(0);
int caretLineNumber = 1;
while (true)
{
if (!TillEnd)
{
if (caretLineStart.CompareTo(p) < 0)
{
break;
}
}
int result;
p = p.GetLineStartPosition(1, out result);
if (result == 0)
{
break;
}
caretLineNumber++;
}
return(caretLineNumber);
}
private void INPUTBOX_TextChanged(object sender, TextChangedEventArgs e)
{
INPUTBOX.ClearValue(TextElement.FontWeightProperty);
INPUTBOX.ClearValue(TextElement.ForegroundProperty);
TextRange tr = new TextRange(INPUTBOX.Document.ContentStart, INPUTBOX.Document.ContentEnd);
string data = tr.Text;
MatchCollection matches = Regex.Matches(data, @"[\w]+");
long num = matches.Count;
WORDCOUNT.Content = num.ToString() + " Words ";
//Get Line number in the richtextbox...
//INPUTBOX.CaretPosition = INPUTBOX.CaretPosition.GetLineStartPosition(0);
TextPointer caretStart = INPUTBOX.CaretPosition.GetLineStartPosition(0);
TextPointer tp = INPUTBOX.Document.ContentStart.GetLineStartPosition(0);
int linesCount = 1;
while (true)
{
if (caretStart.CompareTo(tp) < 0)
{
break;
}
int result;
tp = tp.GetLineStartPosition(1, out result);
if (result == 0)
{
break;
}
linesCount++;
}
if (linesCount > 9 && linesCount <= 99)
{
Thickness tk = INPUTBOX.Margin;
tk.Left = 40;
INPUTBOX.Margin = tk;
SCROLLNUM.Width = 30;
}
else if (linesCount > 99 && linesCount < 1000)
{
Thickness tk = INPUTBOX.Margin;
tk.Left = 50;
INPUTBOX.Margin = tk;
SCROLLNUM.Width = 40;
}
else if (linesCount >= 1000)
{
MessageBox.Show("Sorry, I cannot deal with so much text!");
}
//Display in Another richtextbox
while (maxLine < linesCount)
{
maxLine++;
SCROLLNUM.AppendText(Environment.NewLine + maxLine.ToString());
}
while (maxLine > linesCount)
{
maxLine--;
SCROLLNUM.Document.Blocks.Remove(SCROLLNUM.Document.Blocks.LastBlock);
}
}
/// <summary>
/// Gets the position at the end of the line containing pointer
/// </summary>
/// <param name="pointer">Position on the line being queried</param>
/// <returns>The position at the end of the line containing pointer</returns>
public static TextPointer GetLineEndPosition(TextPointer pointer)
{
if (pointer == null)
{
throw new ArgumentNullException("pointer");
}
TextPointer result;
int actualCount;
TextPointer endOfLine = pointer.GetLineStartPosition(1, out actualCount);
if (actualCount != 1)
{
result = pointer.DocumentEnd;
}
else
{
// There may be several consecutive line boundary positions
// only one of them is really useful to us.
// It's the line start position whose forward and backward character rects are on
// different lines.
// The fastest way to find such a position without testing character rects it to
// walk backward searching for the first position that is no a line start position.
do
{
endOfLine = endOfLine.GetPositionAtOffset(-1);
}while (endOfLine != null && endOfLine.IsAtLineStartPosition);
result = endOfLine ?? pointer.DocumentEnd;
}
return(result);
}
public static int GetPositionInLine(this TextPointer Pointer)
{
TextPointer tp1 = Pointer.GetLineStartPosition(0);
int ox = tp1.GetOffsetToPosition(Pointer);
return(ox - 1);
}
protected override void OnTextChanged(TextChangedEventArgs e)
{
if (this.completions == null)
{
this.completions = new ObservableCollection <string>();
}
var textRange = new TextRange(this.Document.ContentStart, this.Document.ContentEnd);
this.code = textRange.Text;
TextPointer caretLineStart = this.CaretPosition.GetLineStartPosition(0);
TextPointer p = this.Document.ContentStart.GetLineStartPosition(0);
int value = this.CaretPosition.GetLineStartPosition(0).GetOffsetToPosition(this.CaretPosition);
this.column = (uint)value;
this.line = 0;
while (true)
{
if (caretLineStart.CompareTo(p) < 0)
{
break;
}
int result;
p = p.GetLineStartPosition(1, out result);
if (result == 0)
{
break;
}
this.line++;
}
this.autoResetEvent.Set();
base.OnTextChanged(e);
}
// Given a RichTextBox, return the column number of the current caret position
public static int Rtb_GetCaretColumnPos(RichTextBox rtb)
{
TextPointer caretPos = rtb.CaretPosition;
TextPointer lineStartPos = caretPos.GetLineStartPosition(0);
return(Math.Max(lineStartPos.GetOffsetToPosition(caretPos) - 1, 0));
}
public static int GetFirtsLineEndPosition(this TextBlock source)
{
var text = source.Text;
TextPointer lineStart = source.ContentStart.GetPositionAtOffset(1, LogicalDirection.Forward);
TextPointer lineEnd = lineStart?.GetLineStartPosition(1);
return(lineEnd != null?lineStart.GetOffsetToPosition(lineEnd) : text.Length);
}
internal void HighlightLine(Color clr)
{
// Get the where the next line start - this will be null if there is no next line, in which case it will use the document's end.
var nextStart = StartPointer.GetLineStartPosition(1);
// Create a highlight up from the start to the end of the line - the TextRange represents where the RichTextBox gets highlighted.
highlights.Add(new CodeTextBoxHighlight(new TextRange(StartPointer, (nextStart ?? txtCode.Document.ContentEnd).GetInsertionPosition(LogicalDirection.Backward)), clr));
}
public static TextPointer GetTextPointerForPosition(this RichTextBox rtb, int line, int column)
{
TextPointer docStartLine = rtb.Document.ContentStart.GetLineStartPosition(0);
TextPointer tp = docStartLine.GetLineStartPosition(line);
for (int i = 0; i <= column; i++)
{
tp = tp.GetNextInsertionPosition(LogicalDirection.Forward);
}
return(tp);
}
/// <summary>
/// NOTE: This method is slow and inneficient. DO not yet know a better way...
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public static int GetLineNumberFromPosition(RichTextBox rtb, TextPointer position)
{
if (position == null)
{
return(0);
}
int lineMoved;
position.GetLineStartPosition(-int.MaxValue, out lineMoved);
return(-lineMoved);
}
public static int GetLineForTextPointer(this RichTextBox rtb, TextPointer tp)
{
TextPointer tpLine = tp.GetLineStartPosition(0);
int lineNr = 1;
for (TextPointer linePointer = rtb.Document.ContentStart.GetLineStartPosition(0);
linePointer.CompareTo(tpLine) < 0; linePointer = linePointer.GetLineStartPosition(1))
{
lineNr++;
}
return(lineNr);
}
public static int GetColumnForTextPointer(this RichTextBox rtb, TextPointer tp)
{
TextPointer tpColumn = tp.GetInsertionPosition(LogicalDirection.Backward);
int columnNr = 1;
for (TextPointer linePointer = tpColumn.GetLineStartPosition(0).GetNextInsertionPosition(LogicalDirection.Forward);
linePointer.CompareTo(tpColumn) < 0; linePointer = linePointer.GetNextInsertionPosition(LogicalDirection.Forward))
{
columnNr++;
}
return(columnNr);
}
private void RtbxTexto_TextChanged(object sender, TextChangedEventArgs e)
{
TextPointer posCursor = rtbxTexto.CaretPosition;
TextPointer linea = posCursor.GetLineStartPosition(0);
TextRange rangoColumna = new TextRange(linea, posCursor);
int indiceColumna = rangoColumna.Text.Length;
int indiceLinea = rtbxTexto.Document.Blocks.Count;
stbItemColumna.Content = "Col " + indiceColumna;
stbItemLinea.Content = "Lin " + indiceLinea;
}
private void DocumentEditor_SelectionChanged(object sender, RoutedEventArgs e)
{
TextPointer ls = CaretPosition.GetLineStartPosition(0);
TextPointer p = Document.ContentStart.GetLineStartPosition(0);
int @int = 1;
int int2 = 1;
while (true)
{
if (ls.CompareTo(p) < 1)
{
break; // TODO: might not be correct. Was : Exit While
}
int r = 0;
p = p.GetLineStartPosition(1, out r);
if (r == 0)
{
break; // TODO: might not be correct. Was : Exit While
}
@int += 1;
}
TextPointer ls2 = Document.ContentStart.DocumentEnd.GetLineStartPosition(0);
TextPointer p2 = Document.ContentEnd.DocumentStart.GetLineStartPosition(0);
while (true)
{
if (ls2.CompareTo(p2) < 1)
{
break; // TODO: might not be correct. Was : Exit While
}
int r = 0;
p2 = p2.GetLineStartPosition(1, out r);
if (r == 0)
{
break; // TODO: might not be correct. Was : Exit While
}
int2 += 1;
}
SelectedLineNumber = @int;
LineCount = int2;
TextRange t = new TextRange(Document.ContentStart, Document.ContentEnd);
TextPointer caretPos = CaretPosition;
TextPointer poi = CaretPosition.GetLineStartPosition(0);
int currentColumnNumber = Math.Max(p.GetOffsetToPosition(caretPos) - 1, 0) + 1;
int currentColumnCount = currentColumnNumber;
currentColumnCount += CaretPosition.GetTextRunLength(System.Windows.Documents.LogicalDirection.Forward);
SelectedColumnNumber = currentColumnNumber;
ColumnCount = currentColumnCount;
}
private void OnKeyUp(object sender, KeyEventArgs e)
{
// Indentation.
if (e.Key == Key.Enter || e.Key == Key.Return)
{
TextPointer caret = richTextBox.CaretPosition;
caret.GetLineStartPosition(0).InsertTextInRun(this.CurrentIndentation);
TextPointer moveTo = caret.Paragraph.ContentEnd;
if (moveTo != null)
{
richTextBox.CaretPosition = moveTo;
}
}
}
/// <summary>
/// return a TextPointer positioned before a specified position on the line.
/// If the position exceeds the end of the line, either pad the line with
/// blanks or set the position to the last char on the line.
/// </summary>
/// <param name="Doc"></param>
/// <param name="Pointer"></param>
/// <param name="Position"></param>
/// <param name="Pad"></param>
/// <returns></returns>
public static TextPointer SetPositionOnLine(
this TextPointer Pointer,
FlowDocument Doc, int Position,
bool Pad = false)
{
TextPointer tp = Pointer.GetLineStartPosition(0);
int pos = Position;
// make sure length of the line can accomodate the position.
string lineText = Pointer.GetLineText(Doc, 0, "");
if (pos > (lineText.Length - 1))
{
if (Pad == false)
{
pos = lineText.Length - 1;
}
else
{
Pointer.PadLineToLength(Doc, pos + 1);
lineText = Pointer.GetLineText(Doc);
}
}
// position to the last char on the line.
if (lineText.Length == (pos + 1))
{
tp = Pointer.GetLineEndPosition(Doc);
}
// advance a char at a time from the start of the line.
else
{
for (int ix = 0; ix < pos; ++ix)
{
var nextTp = tp.GetNextInsertionPosition(LogicalDirection.Forward);
if (nextTp != null)
{
tp = nextTp;
}
else
{
break;
}
}
}
return(tp);
}
/// <summary>
/// WARNING: Be carefull with this function.
/// When the text is wrapped (text longer then the visual-text-box) this function returns only the text until the end of the visual line
/// As long as there is no text-wrapping it should work fine. (Is disabled now by setting PageWidht to 100000)
/// If this is a problem this function needs to be extended to handle this case.
/// </summary>
public static TextRange GetVisualLine(this RichTextBox richTextBox, int lineNumber)
{
TextPointer textStart = richTextBox.Document.ContentStart.GetNextInsertionPosition(LogicalDirection.Forward);
var searchedLineStart = textStart.GetLineStartPosition(lineNumber);
if (searchedLineStart == null)
{
// Line does not exist
throw new Exception($"GetLineNotifierLine() - Line {lineNumber} does not exist");
}
var nextLineStart = searchedLineStart.GetLineStartPosition(1);
var searchedLineEnd = (nextLineStart != null ? nextLineStart : textStart.DocumentEnd).GetInsertionPosition(LogicalDirection.Backward);
TextRange textRange = new TextRange(searchedLineStart, searchedLineEnd);
return(textRange);
}
private void GetCaretPosition(out int ColumnNumber, out int LineNumber)
{
TextPointer current = rtbConsole.CaretPosition;
var start = current.GetEdgeTextPointer(LogicalDirection.Backward); // Word position before caret
var end = current.GetEdgeTextPointer(LogicalDirection.Forward); // Word position after caret
current.GetCharacterRect(LogicalDirection.Forward);
current.GetLineStartPosition(-int.MaxValue, out LineNumber);
if (LineNumber < 0)
{
LineNumber *= -1;
}
LineNumber++;
//var p = rtbConsole.Document.Blocks.ElementAt(lineNumber - 1) as Paragraph;
ColumnNumber = start.GetLineStartPosition(0).GetOffsetToPosition(current) - 3;
}
internal static int GetLineNumberFromSelection(TextPointer position)
{
if (position == null)
{
return(0);
}
int lineNumber = 0;
int linesMoved;
do
{
position = position.GetLineStartPosition(-1, out linesMoved);
lineNumber++;
}while (position != null && linesMoved != 0);
return(lineNumber);
}
public static IEnumerable <string> GetLines(this TextBlock source)
{
var text = source.Text;
int offset = 0;
TextPointer lineStart = source.ContentStart.GetPositionAtOffset(1, LogicalDirection.Forward);
do
{
TextPointer lineEnd = lineStart != null?lineStart.GetLineStartPosition(1) : null;
int length = lineEnd != null?lineStart.GetOffsetToPosition(lineEnd) : text.Length - offset;
yield return(text.Substring(offset, length));
offset += length;
lineStart = lineEnd;
}while (lineStart != null);
}
/// <summary>
/// Find the input string within the document, starting at the specified position.
/// </summary>
/// <param name="position">the current text position</param>
/// <param name="input">input text</param>
/// <returns>An <see cref="TextRange"/> representing the (next) matching string within the text container. Null if there are no matches.</returns>
public TextRange FindNext(ref TextPointer position, String input)
{
FindText(input);
foreach (var result in _searchHits)
{
if (position.CompareTo(result.End) < 0)
{
position = result.Start;
double top = PointToScreen(position.GetLineStartPosition(0).GetCharacterRect(LogicalDirection.Forward).TopLeft).Y + PointFromScreen(new Point(0, 0)).Y;
Trace.WriteLine($" Top: {top}, CharOffset: {position}");
ScrollViewer.ScrollToVerticalOffset(ScrollViewer.VerticalOffset + top);
position = result.End;
return(result);
}
}
return(null);
}
private static void LogRemoved(object sender, LogEventArgs e)
{
RichTextBox richTextBox;
if (!items.TryGetValue((ComponentViewModel)sender, out richTextBox))
{
return;
}
TextPointer pointer1 = richTextBox.Document.ContentStart.GetNextContextPosition(LogicalDirection.Forward);
TextPointer pointer2 = pointer1.GetLineStartPosition(1);
if ((pointer1 == null) || (pointer2 == null))
{
return;
}
richTextBox.Selection.Select(pointer1, pointer2);
richTextBox.Selection.Text = "";
}
internal static int GetColumnNumberFromSelection(TextPointer position)
{
if (position == null)
{
return(0);
}
int linesMoved;
TextPointer lineStartPosition = position.GetLineStartPosition(0, out linesMoved);
int columnNumber = 0;
do
{
columnNumber++;
position = position.GetNextInsertionPosition(LogicalDirection.Backward);
}while (position != null && position.CompareTo(lineStartPosition) > 0);
return(columnNumber);
}
