//=========================================================================================
private void DrawSpanBackground(Graphics g, TextPoint start, TextPoint end, Brush brush, Pen pen)
{
if (start.Line != end.Line)
{
//first selected line
int iLastCol = TextCaret.GetLastCol(this.Viewer.Document[start.Line].Text, this.Viewer._TabSize);
this.DrawLineSpanBackground(g, start.Line, start.Col, iLastCol - start.Col, brush, null);
//intermediate selected lines
for (int i = start.Line + 1; i < end.Line; i++)
{
iLastCol = TextCaret.GetLastCol(this.Viewer.Document[i].Text, this.Viewer._TabSize);
this.DrawLineSpanBackground(g, i, 0, iLastCol + 1, brush, null);
}
//last selected line
this.DrawLineSpanBackground(g, end.Line, 0, end.Col, brush, null);
}
//if there some selected symbols
else if (start.Col != end.Col)
{
this.DrawLineSpanBackground(g, start.Line, start.Col, end.Col - start.Col, brush, pen);
}
}
//=========================================================================================
public void Add(Brush brush, Pen pen, int lineStart, int chrStart, int lineEnd, int chrEnd)
{
if (lineStart >= this.Viewer.Document.Count || lineEnd >= this.Viewer.Document.Count)
{
return;
}
int iColStart = this.Viewer.Caret.GetColumn(this.Viewer.Document[lineStart].Text, chrStart);
int iColEnd = this.Viewer.Caret.GetColumn(this.Viewer.Document[lineEnd].Text, chrEnd);
TextPoint pStart = new TextPoint(lineStart, iColStart, chrStart);
TextPoint pEnd = new TextPoint(lineEnd, iColEnd, chrEnd);
if (lineEnd == lineStart)
{
TextSpan oSpan = new TextSpan(brush, pen, pStart, pEnd);
this.Add(oSpan);
}
else
{
TextPoint p1, p2;
string sLine = this.Viewer.Document[lineStart].Text;
p2 = new TextPoint(lineStart, TextCaret.GetLastCol(sLine, this.Viewer._TabSize), sLine.Length);
TextSpan oSpan = new TextSpan(brush, pen, pStart, p2);
this.Add(oSpan);
for (int iLine = lineStart + 1; iLine < lineEnd; iLine++)
{
sLine = this.Viewer.Document[iLine].Text;
p1 = new TextPoint(iLine, 0, 0);
p2 = new TextPoint(iLine, TextCaret.GetLastCol(sLine, this.Viewer._TabSize), sLine.Length);
oSpan = new TextSpan(brush, pen, p1, p2);
this.Add(oSpan);
}
p1 = new TextPoint(lineEnd, 0, 0);
oSpan = new TextSpan(brush, pen, p1, pEnd);
this.Add(oSpan);
}
}
//=========================================================================================
internal void SetOwner(CodeViewer viewer)
{
this.Viewer = viewer;
this.Caret = new TextCaret(this);
this.Renderer = new DocumentViewRenderer(viewer);
}
//=========================================================================================
internal void SetOwner(CodeViewer viewer)
{
this.Viewer = viewer;
this.Caret = new TextCaret(this);
this.Renderer = new DocumentViewRenderer(viewer);
}
