public void Draw(ListViewItem item, Graphics g, Rectangle rect)
{
if (!myOffsetsAreCorrect)
{
UpdateOffsets(g);
}
int startOffset = CalculateOffset(item);
for (int i = 0; i < myPainters.Length; i++)
{
IItemPainter painter = myPainters[i];
Size size = painter.GetSize(item, g);
int offset = myOffsets[i] + startOffset;
int endOffset = i == myPainters.Length - 1 ? rect.Width : myOffsets[i + 1];
switch (myAlignments[i])
{
case ColumnAlignment.Right:
offset += (endOffset - offset) - size.Width;
break;
case ColumnAlignment.Center:
offset += ((endOffset - offset) - size.Width) / 2;
break;
}
painter.Draw(item, g, new Rectangle(offset, 0, endOffset - offset, 0));
}
}
private void UpdateOffsets(Graphics g)
{
myOffsets = new int[myPainters.Length];
int offset = 0;
for (int i = 0; i < myPainters.Length; i++)
{
IItemPainter painter = myPainters[i];
myOffsets[i] = offset;
int maxWidth = 0;
foreach (ListViewItem item in myItems)
{
Size size = painter.GetSize(item, g);
if (size.Width > maxWidth)
{
maxWidth = size.Width;
}
}
offset += maxWidth + SPACING;
}
myWidth = offset;
myOffsetsAreCorrect = true;
}
public int CompareTo(IItemPainter other)
{
return(string.CompareOrdinal(Name, other.Name));
}