protected override void OnPaint(PaintEventArgs e)
{
bool rtl = RightToLeft == RightToLeft.Yes;
AdjustScroll();
int startI = VerticalScroll.Value/ItemHeight - 1;
int finishI = (VerticalScroll.Value + ClientSize.Height)/ItemHeight + 1;
startI = Math.Max(startI, 0);
finishI = Math.Min(finishI, VisibleItems.Count);
int y = 0;
for (int i = startI; i < finishI; i++)
{
y = i*ItemHeight - VerticalScroll.Value;
if (ImageList != null && VisibleItems[i].ImageIndex >= 0)
if (rtl)
e.Graphics.DrawImage(ImageList.Images[VisibleItems[i].ImageIndex], Width - 1 - LeftPadding, y);
else
e.Graphics.DrawImage(ImageList.Images[VisibleItems[i].ImageIndex], 1, y);
var textRect = new Rectangle(LeftPadding, y, ClientSize.Width - 1 - LeftPadding, ItemHeight - 1);
if (rtl)
textRect = new Rectangle(1, y, ClientSize.Width - 1 - LeftPadding, ItemHeight - 1);
if (i == SelectedItemIndex)
{
Brush selectedBrush = new LinearGradientBrush(new Point(0, y - 3), new Point(0, y + ItemHeight),
Color.White, Color.Orange);
e.Graphics.FillRectangle(selectedBrush, textRect);
e.Graphics.DrawRectangle(Pens.Orange, textRect);
}
if (i == hoveredItemIndex)
e.Graphics.DrawRectangle(Pens.Red, textRect);
var sf = new StringFormat();
if (rtl)
sf.FormatFlags = StringFormatFlags.DirectionRightToLeft;
var args = new PaintItemEventArgs(e.Graphics, e.ClipRectangle)
{
Font = Font,
TextRect = new RectangleF(textRect.Location, textRect.Size),
StringFormat = sf,
IsSelected = i == SelectedItemIndex,
IsHovered = i == hoveredItemIndex
};
//call drawing
VisibleItems[i].OnPaint(args);
}
}
public virtual void OnPaint(PaintItemEventArgs e)
{
e.Graphics.DrawString(ToString(), e.Font, Brushes.Black, e.TextRect, e.StringFormat);
}
public override void OnPaint(PaintItemEventArgs e)
{
if (ColumnWidth != null && ColumnWidth.Length != MenuTextByColumns.Length)
throw new Exception("ColumnWidth.Length != MenuTextByColumns.Length");
int[] columnWidth = ColumnWidth;
if (columnWidth == null)
{
columnWidth = new int[MenuTextByColumns.Length];
float step = e.TextRect.Width/MenuTextByColumns.Length;
for (int i = 0; i < MenuTextByColumns.Length; i++)
columnWidth[i] = (int) step;
}
//draw columns
Pen pen = Pens.Silver;
Brush brush = Brushes.Black;
float x = e.TextRect.X;
e.StringFormat.FormatFlags = e.StringFormat.FormatFlags | StringFormatFlags.NoWrap;
for (int i = 0; i < MenuTextByColumns.Length; i++)
{
int width = columnWidth[i];
var rect = new RectangleF(x, e.TextRect.Top, width, e.TextRect.Height);
e.Graphics.DrawLine(pen, new PointF(x, e.TextRect.Top), new PointF(x, e.TextRect.Bottom));
e.Graphics.DrawString(MenuTextByColumns[i], e.Font, brush, rect, e.StringFormat);
x += width;
}
}
