protected override void OnRenderTabScrollChevron(TabStripScrollButtonRenderEventArgs e)
{
const int ChevronWidth = 8;
const int ChevronHeight = 5;
Pen pen = Pens.Black;
try
{
int x = e.ChevronRectangle.Left + ((e.ChevronRectangle.Width - ChevronWidth) / 2);
int y = e.ChevronRectangle.Top + ((e.ChevronRectangle.Height - ChevronHeight) / 2);
bool left = (e.ScrollDirection == TabStripScrollDirection.Left) &&
(e.ToolStrip.RightToLeft == RightToLeft.No);
if (e.ToolStrip.RightToLeft == RightToLeft.Yes)
{
left = (e.ScrollDirection == TabStripScrollDirection.Right);
}
if (left)
{
x += 2;
}
if (!e.Item.Enabled)
{
pen = new Pen(Color.FromArgb(178, 178, 178), 1);
}
for (int i = 0; i < ChevronHeight; i++, y++)
{
e.Graphics.DrawLine(pen, x, y,
x + 1, y);
e.Graphics.DrawLine(pen, x + 4, y,
x + 4 + 1, y);
if (i < (ChevronHeight / 2))
{
x += (left) ? -1 : +1;
}
else
{
x += (left) ? +1 : -1;
}
}
}
finally
{
if (!e.Item.Enabled)
{
pen.Dispose();
}
}
}
public void DrawTabScrollChevron(TabStripScrollButtonRenderEventArgs e)
{
OnRenderTabScrollChevron(e);
var handler = Events[EventRenderTabScrollChevron] as EventHandler <TabStripScrollButtonRenderEventArgs>;
if (handler != null)
{
handler(this, e);
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (Renderer != null)
{
var chevronRect = new Rectangle(
new Point(Padding.Left, Padding.Top),
new Size(Width - Padding.Horizontal, Height - Padding.Vertical));
var args = new TabStripScrollButtonRenderEventArgs(e.Graphics, this, chevronRect);
Renderer.DrawTabScrollChevron(args);
}
}
protected virtual void OnRenderTabScrollChevron(TabStripScrollButtonRenderEventArgs e)
{
}