private void PaintLineHighlight()
{
using (Graphics g = this.CreateGraphics())
{
Color color = Color.Lavender;
Pen highlight_pen = new Pen(Color.Lavender);
Pen clear_pen = new Pen(this.BackColor);
SolidBrush highlight_brush = new SolidBrush(Color.FromArgb(64, color.R, color.G, color.B));
SolidBrush clear_brush = new SolidBrush(this.BackColor);
// index of the current line
int index = this.GetFirstCharIndexOfCurrentLine();
// rectangle to specify which region to paint too
Rectangle rect = new Rectangle();
// specify dimensions
rect.X = 0;
rect.Y = this.GetPositionFromCharIndex(index).Y;
rect.Width = this.GetHorizontalScrollBarWidth();
rect.Height = Convert.ToInt32(this.Font.Height * this.ZoomFactor);
// this will always be true unless the current line remains the same
if (!(mLastHighlight.mCharIndex == index) && !(mLastHighlight.mRectangle == rect))
{
// remove the last highlight. regardless of the brush specified, white is always applied, and the text is painted over
g.DrawRectangle(clear_pen, mLastHighlight.mRectangle);
g.FillRectangle(clear_brush, mLastHighlight.mRectangle);
// apply highlight to the current line
g.DrawRectangle(highlight_pen, rect);
g.FillRectangle(highlight_brush, rect);
}
mLastHighlight = new LastHighlight(index, rect);
}
}
private void PaintLineHighlight()
{
using (Graphics g = this.CreateGraphics())
{
Color color = Color.Lavender;
Pen highlight_pen = new Pen(Color.Lavender);
Pen clear_pen = new Pen(this.BackColor);
SolidBrush highlight_brush = new SolidBrush(Color.FromArgb(64, color.R, color.G, color.B));
SolidBrush clear_brush = new SolidBrush(this.BackColor);
// index of the current line
int index = this.GetFirstCharIndexOfCurrentLine();
// rectangle to specify which region to paint too
Rectangle rect = new Rectangle();
// specify dimensions
rect.X = 0;
rect.Y = this.GetPositionFromCharIndex(index).Y;
rect.Width = this.GetHorizontalScrollBarWidth();
rect.Height = Convert.ToInt32(this.Font.Height * this.ZoomFactor);
// this will always be true unless the current line remains the same
if (!(mLastHighlight.mCharIndex == index) && !(mLastHighlight.mRectangle == rect))
{
// remove the last highlight. regardless of the brush specified, white is always applied, and the text is painted over
g.DrawRectangle(clear_pen, mLastHighlight.mRectangle);
g.FillRectangle(clear_brush, mLastHighlight.mRectangle);
// apply highlight to the current line
g.DrawRectangle(highlight_pen, rect);
g.FillRectangle(highlight_brush, rect);
}
mLastHighlight = new LastHighlight(index, rect);
}
}