List<string> lines = new List<string>();
public int longestLineIdx = 0;
public int longestLineCharCount = 0;
+ /// <summary>
+ /// real position in char arrays, tab = 1 char
+ /// </summary>
+ int _currentLine = 0;
+ int _currentCol = 0;
public int Length { get { return lines.Count;}}
+ /// <summary>
+ /// Return line with tabs replaced by spaces
+ /// </summary>
+ public string GetPrintableLine(int i){
+ return string.IsNullOrEmpty(lines[i]) ? "" : lines[i].Replace("\t", new String(' ', Interface.TabSize));
+ }
+
public string this[int i]
{
get { return lines[i]; }
AddRange (Regex.Split (rawSource, "\r\n|\r|\n|\\\\n"));
lineBreak = detectLineBreakKind (rawSource);
- findLongestLine ();
+ findLongestVisualLine ();
}
- void findLongestLine(){
+ void findLongestVisualLine(){
longestLineCharCount = 0;
- for (int i = 0; i < lines.Count; i++) {
- if (lines[i].Length > longestLineCharCount) {
- longestLineCharCount = lines[i].Length;
+ for (int i = 0; i < this.Length; i++) {
+ if (this.GetPrintableLine(i).Length > longestLineCharCount) {
+ longestLineCharCount = this.GetPrintableLine(i).Length;
longestLineIdx = i;
}
}
return lines.Count > 0 ? lines.Aggregate((i, j) => i + this.lineBreak + j) : "";
}
}
+
+ /// <summary>
+ /// convert visual position to buffer position
+ /// </summary>
+ Point getBuffPos (Point visualPos) {
+ int i = 0;
+ int buffCol = 0;
+ while (i < visualPos.X) {
+ if (this [visualPos.Y] [buffCol] == '\t')
+ i += Interface.TabSize;
+ else
+ i++;
+ buffCol++;
+ }
+ return new Point (buffCol, visualPos.Y);
+ }
+ /// <summary>
+ /// convert buffer postition to visual position
+ /// </summary>
+ Point getVisualPos (Point buffPos) {
+ int vCol = this[buffPos.Y].Substring(0, buffPos.X).Replace("\t", new String(' ', Interface.TabSize)).Length;
+ return new Point (vCol, buffPos.Y);
+ }
+ /// <summary>
+ /// Gets visual position computed from actual buffer position
+ /// </summary>
+ public Point VisualPosition {
+ get { return getVisualPos (new Point (_currentCol, _currentLine)); }
+ }
+ /// <summary>
+ /// set buffer current position from visual position
+ /// </summary>
+ public void SetBufferPos(Point visualPosition) {
+ CurrentPosition = getBuffPos(visualPosition);
+ }
+
+ #region Editing and moving cursor
+ Point selectionStart = -1;
+ Point selectionEnd = -1;
+ public void SetSelection (Point visualStart, Point visualEnd) {
+ selectionStart = getBuffPos (visualStart);
+ selectionEnd = getBuffPos (visualEnd);
+ }
+ public void ResetSelection () {
+ selectionStart = selectionEnd = -1;
+ }
+ bool selectionIsEmpty {
+ get { return selectionStart == selectionEnd; }
+ }
+ public int CurrentColumn{
+ get { return _currentCol; }
+ set {
+ if (value == _currentCol)
+ return;
+ if (value < 0)
+ _currentCol = 0;
+ else if (value > lines [_currentLine].Length)
+ _currentCol = lines [_currentLine].Length;
+ else
+ _currentCol = value;
+ }
+ }
+ public int CurrentLine{
+ get { return _currentLine; }
+ set {
+ if (value == _currentLine)
+ return;
+ if (value >= lines.Count)
+ _currentLine = lines.Count-1;
+ else if (value < 0)
+ _currentLine = 0;
+ else
+ _currentLine = value;
+ //force recheck of currentCol for bounding
+ int cc = _currentCol;
+ _currentCol = 0;
+ CurrentColumn = cc;
+ }
+ }
+ public Point CurrentPosition {
+ get { return new Point(CurrentColumn, CurrentLine); }
+ set {
+ _currentCol = value.X;
+ _currentLine = value.Y;
+ }
+ }
+ protected Char CurrentChar { get { return lines [CurrentLine] [CurrentColumn]; } }
+
+ /// <summary>
+ /// Moves cursor one char to the left.
+ /// </summary>
+ /// <returns><c>true</c> if move succeed</returns>
+ public bool MoveLeft(){
+ int tmp = _currentCol - 1;
+ if (tmp < 0) {
+ if (_currentLine == 0)
+ return false;
+ CurrentLine--;
+ CurrentColumn = int.MaxValue;
+ } else
+ CurrentColumn = tmp;
+ return true;
+ }
+ /// <summary>
+ /// Moves cursor one char to the right.
+ /// </summary>
+ /// <returns><c>true</c> if move succeed</returns>
+ public bool MoveRight(){
+ int tmp = _currentCol + 1;
+ if (tmp > this [_currentLine].Length){
+ if (CurrentLine == this.Length - 1)
+ return false;
+ CurrentLine++;
+ CurrentColumn = 0;
+ } else
+ CurrentColumn = tmp;
+ return true;
+ }
+ public void GotoWordStart(){
+ if (this[CurrentLine].Length == 0)
+ return;
+ CurrentColumn--;
+ //skip white spaces
+ while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn > 0)
+ CurrentColumn--;
+ while (char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn > 0)
+ CurrentColumn--;
+ if (!char.IsLetterOrDigit (this.CurrentChar))
+ CurrentColumn++;
+ }
+ public void GotoWordEnd(){
+ //skip white spaces
+ if (CurrentColumn >= this [CurrentLine].Length - 1)
+ return;
+ while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < this [CurrentLine].Length-1)
+ CurrentColumn++;
+ while (char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < this [CurrentLine].Length-1)
+ CurrentColumn++;
+ if (char.IsLetterOrDigit (this.CurrentChar))
+ CurrentColumn++;
+ }
+ public void DeleteChar()
+ {
+ if (selectionIsEmpty) {
+ if (CurrentColumn == 0) {
+ if (CurrentLine == 0 && this.Length == 1)
+ return;
+ CurrentLine--;
+ CurrentColumn = this [CurrentLine].Length;
+ this [CurrentLine] += this [CurrentLine + 1];
+ RemoveAt (CurrentLine + 1);
+ return;
+ }
+ CurrentColumn--;
+ this [CurrentLine] = this [CurrentLine].Remove (CurrentColumn, 1);
+ } else {
+ int linesToRemove = selectionEnd.Y - selectionStart.Y + 1;
+ int l = selectionStart.Y;
+
+ if (linesToRemove > 0) {
+ this [l] = this [l].Remove (selectionStart.X, this [l].Length - selectionStart.X) +
+ this [selectionEnd.Y].Substring (selectionEnd.X, this [selectionEnd.Y].Length - selectionEnd.X);
+ l++;
+ for (int c = 0; c < linesToRemove-1; c++)
+ RemoveAt (l);
+ CurrentLine = selectionStart.Y;
+ CurrentColumn = selectionStart.X;
+ } else
+ this [l] = this [l].Remove (selectionStart.X, selectionEnd.X - selectionStart.X);
+ CurrentColumn = selectionStart.X;
+ ResetSelection ();
+ }
+ }
+ /// <summary>
+ /// Insert new string at caret position, should be sure no line break is inside.
+ /// </summary>
+ /// <param name="str">String.</param>
+ public void Insert(string str)
+ {
+ if (!selectionIsEmpty)
+ this.DeleteChar ();
+ string[] strLines = Regex.Split (str, "\r\n|\r|\n|" + @"\\n").ToArray();
+ this [CurrentLine] = this [CurrentLine].Insert (CurrentColumn, strLines[0]);
+ CurrentColumn += strLines[0].Length;
+ for (int i = 1; i < strLines.Length; i++) {
+ InsertLineBreak ();
+ this [CurrentLine] = this [CurrentLine].Insert (CurrentColumn, strLines[i]);
+ CurrentColumn += strLines[i].Length;
+ }
+ }
+ /// <summary>
+ /// Insert a line break.
+ /// </summary>
+ public void InsertLineBreak()
+ {
+ Insert(CurrentLine + 1, this[CurrentLine].Substring(CurrentColumn));
+ this [CurrentLine] = this [CurrentLine].Substring (0, CurrentColumn);
+ CurrentLine++;
+ CurrentColumn = 0;
+ }
+ #endregion
}
}
return;
if (value < 0)
_currentCol = 0;
- else if (value > buffer [_currentLine].Length)
- _currentCol = buffer [_currentLine].Length;
+ else if (value > buffer.GetPrintableLine(_currentLine).Length)
+ _currentCol = buffer.GetPrintableLine(_currentLine).Length;
else
_currentCol = value;
+ buffer.SetBufferPos (CurrentPosition);
+
if (_currentCol < ScrollX)
ScrollX = _currentCol;
else if (_currentCol >= ScrollX + visibleColumns)
int cc = _currentCol;
_currentCol = 0;
CurrentColumn = cc;
+
+ buffer.SetBufferPos (CurrentPosition);
+
//System.Diagnostics.Debug.WriteLine ("Scroll:{0} visibleLines:{1} CurLine:{2}", ScrollY, visibleLines, CurrentLine);
if (_currentLine < ScrollY)
ScrollY = _currentLine;
}
[XmlIgnore]public Point CurrentPosition {
get { return new Point(CurrentColumn, CurrentLine); }
+ set {
+ CurrentColumn = value.X;
+ CurrentLine = value.Y;
+ }
}
//TODO:using HasFocus for drawing selection cause SelBegin and Release binding not to work
/// <summary>
/// </summary>
/// <returns><c>true</c> if move succeed</returns>
public bool MoveLeft(){
- int tmp = _currentCol - 1;
- if (tmp < 0) {
- if (_currentLine == 0)
- return false;
- CurrentLine--;
- CurrentColumn = int.MaxValue;
- } else
- CurrentColumn = tmp;
- return true;
+ bool res = buffer.MoveLeft();
+ CurrentPosition = buffer.VisualPosition;
+ return res;
}
/// <summary>
/// Moves cursor one char to the right.
/// </summary>
/// <returns><c>true</c> if move succeed</returns>
public bool MoveRight(){
- int tmp = _currentCol + 1;
- if (tmp > buffer [_currentLine].Length){
- if (CurrentLine == buffer.Length - 1)
- return false;
- CurrentLine++;
- CurrentColumn = 0;
- } else
- CurrentColumn = tmp;
- return true;
+ bool res = buffer.MoveRight();
+ CurrentPosition = buffer.VisualPosition;
+ return res;
}
public void GotoWordStart(){
- if (buffer[CurrentLine].Length == 0)
- return;
- CurrentColumn--;
- //skip white spaces
- while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn > 0)
- CurrentColumn--;
- while (char.IsLetterOrDigit (buffer [CurrentLine] [CurrentColumn]) && CurrentColumn > 0)
- CurrentColumn--;
- if (!char.IsLetterOrDigit (this.CurrentChar))
- CurrentColumn++;
+ buffer.GotoWordStart();
+ CurrentPosition = buffer.VisualPosition;
}
public void GotoWordEnd(){
- //skip white spaces
- if (CurrentColumn >= buffer [CurrentLine].Length - 1)
- return;
- while (!char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < buffer [CurrentLine].Length-1)
- CurrentColumn++;
- while (char.IsLetterOrDigit (this.CurrentChar) && CurrentColumn < buffer [CurrentLine].Length-1)
- CurrentColumn++;
- if (char.IsLetterOrDigit (this.CurrentChar))
- CurrentColumn++;
+ buffer.GotoWordEnd();
+ CurrentPosition = buffer.VisualPosition;
}
public void DeleteChar()
{
- if (selectionIsEmpty) {
- if (CurrentColumn == 0) {
- if (CurrentLine == 0 && buffer.Length == 1)
- return;
- CurrentLine--;
- CurrentColumn = buffer [CurrentLine].Length;
- buffer [CurrentLine] += buffer [CurrentLine + 1];
- buffer.RemoveAt (CurrentLine + 1);
- OnTextChanged (this, null);
- return;
- }
- CurrentColumn--;
- buffer [CurrentLine] = buffer [CurrentLine].Remove (CurrentColumn, 1);
- } else {
- int linesToRemove = selectionEnd.Y - selectionStart.Y + 1;
- int l = selectionStart.Y;
-
- if (linesToRemove > 0) {
- buffer [l] = buffer [l].Remove (selectionStart.X, buffer [l].Length - selectionStart.X) +
- buffer [selectionEnd.Y].Substring (selectionEnd.X, buffer [selectionEnd.Y].Length - selectionEnd.X);
- l++;
- for (int c = 0; c < linesToRemove-1; c++)
- buffer.RemoveAt (l);
- CurrentLine = selectionStart.Y;
- CurrentColumn = selectionStart.X;
- } else
- buffer [l] = buffer [l].Remove (selectionStart.X, selectionEnd.X - selectionStart.X);
- CurrentColumn = selectionStart.X;
- SelBegin = -1;
- SelRelease = -1;
- }
+ if (!selectionIsEmpty)
+ buffer.SetSelection (selectionStart, selectionEnd);
+ buffer.DeleteChar ();
+ CurrentPosition = buffer.VisualPosition;
+ SelBegin = -1;
+ SelRelease = -1;
OnTextChanged (this, null);
}
/// <summary>
protected void Insert(string str)
{
if (!selectionIsEmpty)
- this.DeleteChar ();
- string[] strLines = Regex.Split (str, "\r\n|\r|\n|" + @"\\n").ToArray();
- buffer [CurrentLine] = buffer [CurrentLine].Insert (CurrentColumn, strLines[0]);
- CurrentColumn += strLines[0].Length;
- for (int i = 1; i < strLines.Length; i++) {
- InsertLineBreak ();
- buffer [CurrentLine] = buffer [CurrentLine].Insert (CurrentColumn, strLines[i]);
- CurrentColumn += strLines[i].Length;
- }
+ DeleteChar ();
+
+ buffer.Insert (str);
+ CurrentPosition = buffer.VisualPosition;
+
OnTextChanged (this, null);
RegisterForGraphicUpdate();
}
/// </summary>
protected void InsertLineBreak()
{
- buffer.Insert(CurrentLine + 1, buffer[CurrentLine].Substring(CurrentColumn));
- buffer [CurrentLine] = buffer [CurrentLine].Substring (0, CurrentColumn);
- CurrentLine++;
- CurrentColumn = 0;
+ buffer.InsertLineBreak ();
+ CurrentPosition = buffer.VisualPosition;
OnTextChanged (this, null);
}
#endregion
#region Drawing
+ /// <summary>
+ /// Draw unparsed buffer.
+ /// </summary>
void draw(Context gr){
gr.SelectFontFace (Font.Name, Font.Slant, Font.Wheight);
gr.SetFontSize (Font.Size);
int lPtr = 0;
for (int t = 0; t < tokens.Count; t++) {
- string lstr = tokens [t].Content;
+ string lstr = tokens [t].PrintableContent;
if (lPtr < ScrollX) {
if (lPtr - ScrollX + lstr.Length <= 0) {
lPtr += lstr.Length;
case Key.Left:
if (e.Shift) {
if (selectionIsEmpty)
- SelBegin = new Point(CurrentColumn, CurrentLine);
+ SelBegin = CurrentPosition;
if (e.Control)
GotoWordStart ();
else if (!MoveLeft ())
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