internal TextBufferLocation(TextLine line, int index, int lineNumber, TextBuffer buffer)
{
this._line = line;
this._columnIndex = index;
this._lineIndex = lineNumber;
this._buffer = buffer;
}
private int GetViewIndex(TextLine line, int index)
{
int num = 0;
int num2 = 0;
int length = line.Length;
char[] data = line.Data;
if (data != null)
{
while (num < index)
{
if (data[num] == '\t')
{
num2 += this.TabSize - (num2 % this.TabSize);
}
else
{
num2++;
}
num++;
}
}
return num2;
}
private int GetActualIndex(TextLine line, int xPos)
{
int index = 0;
int num2 = 0;
int length = line.Length;
char[] data = line.Data;
int textWidth;
Interop.SIZE size;
while (index < length)
{
if (data[index] == '\t')
{
num2 += this.TabSize - (num2 % this.TabSize);
}
else
{
num2++;
}
size = this.MeasureString(data, this.ViewLeftIndex, num2 - this.ViewLeftIndex);
textWidth = size.x - (this._fontWidth / 2);
//textWidth = (((num2 - this.ViewLeftIndex) * this._fontWidth) - (this._fontWidth / 2));
if (xPos < (((textWidth + this.MarginPadding) + this._lineNumbersWidth) + this.MarginWidth))
{
return index;
}
index++;
}
return index;
}
private bool SplitLine(TextLine line, int lineNum, int index, bool isBatching)
{
if ((index > line.Length) || (index < 0))
{
return false;
}
char[] data = line.Data;
this.InsertLine(line, lineNum, new TextLine(data, index, line.Length - index), isBatching);
line.Delete(index);
return true;
}
private bool MergeWithNextLine(TextBufferLocation location)
{
int lineIndex = location.LineIndex;
int columnIndex = location.ColumnIndex;
TextLine line = location.Line;
TextLine next = line.Next;
if ((line == null) || (next == null))
{
return false;
}
int length = line.Length;
char[] data = next.Data;
int num2 = next.Length;
if ((data != null) && (num2 > 0))
{
line.Append(data, num2);
if (line.Length > this._maxLineLength)
{
this._maxLineLength = line.Length;
this._maxLine = line;
}
}
location.MoveDown(1);
this.DeleteLine(location);
location.ColumnIndex = length;
return true;
}
private void InsertText(TextBufferLocation location, ArrayList textList, bool addToUndo, bool loading)
{
if (!this._undoing)
{
this.RedoStack.Clear();
}
int count = textList.Count;
if (count >= 1)
{
TextLine line = location.Line;
int lineIndex = location.LineIndex;
int columnIndex = location.ColumnIndex;
TextLine next = line;
int lineNum = lineIndex;
int index = columnIndex;
int lineIndexDelta = 0;
bool flag = columnIndex < line.Length;
for (int i = 0; i < count; i++)
{
char[] chars = (char[]) textList[i];
int length = chars.Length;
int num9 = 0;
if (i > 0)
{
next = next.Next;
lineNum++;
}
if (length > 0)
{
next.Insert(index, chars, 0, length);
if (next == this._last.Line)
{
this._last.ColumnIndex = next.Length;
}
num9 = next.Length;
if (num9 > this._maxLineLength)
{
this._maxLineLength = num9;
this._maxLine = next;
}
index += length;
}
if (i < (count - 1))
{
if (flag)
{
this.SplitLine(next, lineNum, index, true);
}
else
{
this.InsertLine(next, lineNum, true);
}
lineIndexDelta++;
index = 0;
}
}
this.FixLocationLineNumbers(lineIndex, lineIndexDelta, next, lineNum, index);
this._lineCount += lineIndexDelta;
this._last.MoveDown(lineIndexDelta);
this._last.ColumnIndex = this._last.Line.Length;
if (addToUndo)
{
this.AddUndo(4, lineIndex, columnIndex, lineNum, index, textList);
}
if (!loading)
{
this.OnTextBufferChanged(new TextBufferEventArgs(lineIndex, columnIndex, lineIndex, columnIndex, lineNum, index));
}
location.SetLine(next, lineNum);
location.ColumnIndex = index;
}
}
private void InsertLine(TextLine line, int lineNum, TextLine newLine, bool isBatching)
{
TextLine next = line.Next;
line.Next = newLine;
newLine.Previous = line;
newLine.Next = next;
if (next != null)
{
next.Previous = newLine;
}
if (!isBatching)
{
if (next == null)
{
this._last.SetLine(newLine, lineNum + 1);
this._last.ColumnIndex = this._last.Line.Length;
}
this._lineCount++;
}
}
public int MoveUp(int lines)
{
int num = 0;
TextLine previous = this._line;
int lineIndex = this._lineIndex;
while ((num < lines) && (previous != null))
{
previous = previous.Previous;
if (previous != null)
{
this._line = previous;
lineIndex--;
num++;
}
}
this.BeginUpdate();
try
{
if (this.ColumnIndex > this._line.Length)
{
this.ColumnIndex = this._line.Length;
}
this.UpdateLineIndex(lineIndex);
}
finally
{
this.EndUpdate();
}
return num;
}
private void InsertLine(TextLine line, int lineNum)
{
this.InsertLine(line, lineNum, new TextLine(), false);
}
private bool InsertChar(TextBufferLocation location, char c, bool addToUndo)
{
if (!this._undoing)
{
this.RedoStack.Clear();
}
TextLine line = location.Line;
int columnIndex = location.ColumnIndex;
if (columnIndex == line.Length)
{
line.Append(c);
}
else
{
line.Insert(columnIndex, c);
}
if (line == this._last.Line)
{
this._last.ColumnIndex = line.Length;
}
if (line.Length > this._maxLineLength)
{
this._maxLineLength = line.Length;
this._maxLine = line;
}
if (addToUndo)
{
this.AddUndo(1, location.LineIndex, columnIndex, c);
}
int lineIndex = location.LineIndex;
this.OnTextBufferChanged(new TextBufferEventArgs(lineIndex, columnIndex, lineIndex, columnIndex, lineIndex, columnIndex + 1));
location.ColumnIndex++;
return true;
}
private void Initialize()
{
this.UndoStack.Clear();
this.RedoStack.Clear();
TextLine line = new TextLine();
this._first = new TextBufferLocation(line, 0, 0, this);
this.LocationList.Clear();
this._last = this.CreateTextBufferLocation();
this._lineCount = 1;
}
private void FixLocationLineNumbers(int startLineIndex, int lineIndexDelta, TextLine defaultLine, int defaultLineIndex, int defaultIndex)
{
foreach (TextBufferLocation location in this.LocationList)
{
if (location.LineIndex > startLineIndex)
{
if ((location.LineIndex + lineIndexDelta) <= startLineIndex)
{
location.SetLine(defaultLine, defaultLineIndex);
location.ColumnIndex = defaultIndex;
}
else
{
location.UpdateLineIndex(location.LineIndex + lineIndexDelta);
}
}
}
}
private int CountScopes(TextLine s)
{
int num = 0;
for (int i = 0; i < s.Length; i++)
{
if (s[i] == '{')
{
num++;
}
else if (s[i] == '}')
{
num--;
}
}
return num;
}
internal void SetLine(TextLine line, int lineIndex)
{
this._line = line;
if (this.ColumnIndex > this._line.Length)
{
this.ColumnIndex = this._line.Length;
}
this.UpdateLineIndex(lineIndex);
}
private unsafe void PaintTextLine(TextLine line, int lineNum, IntPtr hdc, int yPos, int startIndex)
{
try
{
if (this.LineNumbersVisible)
{
this.ColorTable[4].SetupHdc(hdc);
string str = (lineNum + 1).ToString();
int length = str.Length;
int num2 = (5 - length) * this._fontWidth;
Interop.RECT lpRect = new Interop.RECT(this.MarginWidth, yPos, this.MarginWidth + this._lineNumbersWidth, yPos + this._fontHeight);
fixed (char* chRef = str.ToCharArray())
{
Interop.ExtTextOutW(hdc, this.MarginWidth + num2, yPos, 2, ref lpRect, (IntPtr)chRef, length, null);
}
}
char[] chars = null;
byte[] colors = null;
if (line.Length > 0)
{
int num3 = 0;
char[] data = line.Data;
byte[] attributes = line.Attributes;
int capacity = line.Length * 2;
StringBuilder builder = new StringBuilder(capacity);
MemoryStream stream = new MemoryStream(capacity);
for (int i = 0; i < line.Length; i++)
{
if (data[i] == '\t')
{
int num6 = this.TabSize - (num3 % this.TabSize);
for (int j = 0; j < num6; j++)
{
if (this._owner.ShowWhitespace)
{
builder.Append('→');
}
else
{
builder.Append(' ');
}
stream.WriteByte(attributes[i]);
}
num3 += num6;
}
else
{
if (this._owner.ShowWhitespace && (data[i] == ' '))
{
builder.Append('\x00b7');
}
else
{
builder.Append(data[i]);
}
stream.WriteByte(attributes[i]);
num3++;
}
}
stream.WriteByte(attributes[data.Length]);
chars = builder.ToString().ToCharArray();
colors = stream.ToArray();
}
else
{
colors = new byte[0];
chars = new char[0];
}
if (this._selectionExists)
{
if (this._selection.IsSingleLine)
{
if (lineNum == this._selection.Start.LineIndex)
{
int endIndex = Math.Min(Math.Max(this.GetViewIndex(line, this._selection.Start.ColumnIndex), startIndex), chars.Length);
int minLenght = Math.Min(Math.Max(startIndex, this.GetViewIndex(line, this._selection.End.ColumnIndex)), chars.Length);
int rectLeft = (this.MarginWidth + this._lineNumbersWidth) + this.MarginPadding;
//int textWidth = Math.Max(0, endIndex - startIndex) * this._fontWidth;
int textWidth = this.MeasureString(hdc, chars, startIndex, endIndex - startIndex).x;
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, startIndex, endIndex, false);
rectLeft += textWidth;
//textWidth = Math.Max(0, minLenght - endIndex) * this._fontWidth;
textWidth = this.MeasureString(hdc, chars, endIndex, minLenght - endIndex).x;
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, endIndex, minLenght, true);
rectLeft += textWidth;
this.PaintColoredText(chars, colors, hdc, rectLeft, base.Width - this.VerticalScrollBarWidth, yPos, minLenght, chars.Length, false);
return;
}
}
else
{
// 已选择文本中的第一行
if (lineNum == this._selection.Start.LineIndex)
{
int endIndex = Math.Min(Math.Max(this.GetViewIndex(line, this._selection.Start.ColumnIndex), startIndex), chars.Length);
int rectLeft = (this.MarginWidth + this._lineNumbersWidth) + this.MarginPadding;
// 先画出行前未选中的文本
int textWidth = this.MeasureString(hdc, chars, startIndex, endIndex - startIndex).x;
//int textWidth = Math.Max(0, endIndex - startIndex) * this._fontWidth;
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, startIndex, endIndex, false);
rectLeft += textWidth;
// 然后画出选中的文本
textWidth = this.MeasureString(hdc, chars, endIndex, chars.Length - endIndex).x;
if (startIndex <= chars.Length)
{
textWidth += this._fontWidth;
}
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, endIndex, chars.Length, true);
rectLeft += textWidth;
this.PaintColoredText(chars, colors, hdc, rectLeft, base.Width - this.VerticalScrollBarWidth, yPos, 0, 0, false);
return;
}
// 已选择文本中的最后一行
if (lineNum == this._selection.End.LineIndex)
{
int endIndex = Math.Min(Math.Max(this.GetViewIndex(line, this._selection.End.ColumnIndex), startIndex), chars.Length);
int rectLeft = (this.MarginWidth + this._lineNumbersWidth) + this.MarginPadding;
//int num20 = Math.Max(0, num17 - startIndex) * this._fontWidth;
int textWidth = this.MeasureString(hdc, chars, startIndex, endIndex - startIndex).x;
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, startIndex, endIndex, true);
rectLeft += textWidth;
this.PaintColoredText(chars, colors, hdc, rectLeft, base.Width - this.VerticalScrollBarWidth, yPos, endIndex, chars.Length, false);
return;
}
// 选中文本的中间行
if ((lineNum > this._selection.Start.LineIndex) && (lineNum < this._selection.End.LineIndex))
{
int rectLeft = (this.MarginWidth + this._lineNumbersWidth) + this.MarginPadding;
int textWidth = this.MeasureString(hdc, chars, startIndex, chars.Length - startIndex).x;
if (startIndex <= chars.Length)
{
textWidth += this._fontWidth;
}
this.PaintColoredText(chars, colors, hdc, rectLeft, rectLeft + textWidth, yPos, startIndex, chars.Length, true);
rectLeft += textWidth;
this.PaintColoredText(chars, colors, hdc, rectLeft, base.Width - this.VerticalScrollBarWidth, yPos, 0, 0, false);
return;
}
}
}
startIndex = Math.Min(startIndex, chars.Length);
this.PaintColoredText(chars, colors, hdc, (this.MarginWidth + this._lineNumbersWidth) + this.MarginPadding, base.Width - this.VerticalScrollBarWidth, yPos, startIndex, chars.Length, false);
}
catch (Exception)
{
throw;
}
}
private void InsertLine(TextLine line, int lineNum, bool isBatching)
{
this.InsertLine(line, lineNum, new TextLine(), isBatching);
}
private int CountLeadingSpace(TextLine s)
{
int num = 0;
int num2 = 0;
int tabSize = this._view.TabSize;
while (num < s.Length)
{
if (s[num] == '\t')
{
num2 = ((num2 + tabSize) / tabSize) * tabSize;
}
else
{
if (s[num] != ' ')
{
return num2;
}
num2++;
}
num++;
}
return num2;
}
public int MoveDown(int lines)
{
int num = 0;
TextLine next = this._line;
int lineIndex = this._lineIndex;
while ((num < lines) && (next != null))
{
next = next.Next;
if (next != null)
{
this._line = next;
lineIndex++;
num++;
}
}
this.BeginUpdate();
try
{
if (this.ColumnIndex > this._line.Length)
{
this.ColumnIndex = this._line.Length;
}
this.UpdateLineIndex(lineIndex);
}
finally
{
this.EndUpdate();
}
return num;
}
