public override void Draw(Graphics gr, Point position, Range range) { //draw background if (BackgroundBrush != null) { gr.FillRectangle(BackgroundBrush, position.X, position.Y, (range.End.iChar - range.Start.iChar) * range.tb.CharWidth, range.tb.CharHeight); } //draw chars using (var f = new Font(range.tb.Font, FontStyle)) { Line line = range.tb[range.Start.iLine]; float dx = range.tb.CharWidth; float y = position.Y + range.tb.LineInterval / 2; float x = position.X - range.tb.CharWidth / 3; if (ForeBrush == null) { ForeBrush = new SolidBrush(range.tb.ForeColor); } if (range.tb.ImeAllowed) { //IME mode for (int i = range.Start.iChar; i < range.End.iChar; i++) { SizeF size = TextCode.GetCharSize(f, line[i].c); var gs = gr.Save(); float k = size.Width > range.tb.CharWidth + 1 ? range.tb.CharWidth / size.Width : 1; gr.TranslateTransform(x, y + (1 - k) * range.tb.CharHeight / 2); gr.ScaleTransform(k, (float)Math.Sqrt(k)); gr.DrawString(line[i].c.ToString(), f, ForeBrush, 0, 0, stringFormat); gr.Restore(gs); x += dx; } } else { //classic mode for (int i = range.Start.iChar; i < range.End.iChar; i++) { //draw char gr.DrawString(line[i].c.ToString(), f, ForeBrush, x, y, stringFormat); x += dx; } } } }