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));
}
}
/// <summary>
/// Draws Item
/// </summary>
private void DrawItem(ref NMLVCUSTOMDRAW customDraw)
{
try
{
ListViewItem item = this.Items[customDraw.nmcd.dwItemSpec];
if (myItemPainter != null && myItemPainter.IsHandled(item))
{
using (Graphics g = Graphics.FromHdc(customDraw.nmcd.hdc))
{
myItemPainter.Draw(item, g, new Rectangle(0, 0, ClientSize.Width, 0));
}
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine("CustomListView.DrawItem failed : " + ex, "UI");
}
}
// private Rectangle GetFullItemRectangle(int index)
// {
// //TODO: GetItemRectangle works strange
// Rectangle rectangle = GetItemRectangle(index);
// rectangle.Height = GetItemHeight(index) + 1;
// return rectangle;
// }
// protected override void OnSelectedIndexChanged(EventArgs e)
// {
// try
// {
// SuspendLayout();
// if (myOldSelectedIndex != SelectedIndex)
// {
// if ( myOldSelectedIndex >= 0 && myOldSelectedIndex < Items.Count )
// Invalidate(GetFullItemRectangle(myOldSelectedIndex));
// int index = SelectedIndex;
// if ( index >= 0 && index < Items.Count )
// Invalidate(GetFullItemRectangle(index));
// myOldSelectedIndex = SelectedIndex;
// }
// base.OnSelectedIndexChanged (e);
// ResumeLayout(false);
// }
// catch (Exception ex)
// {
// System.Console.Write( ex );
// }
// }
//
//
protected override void OnDrawItem(DrawItemEventArgs e)
{
try
{
if (myItemPainter != null && e.Index >= 0 && e.Index < Items.Count)
{
//System.Console.WriteLine(e.Bounds.Height);
myItemPainter.Draw(Items[e.Index], e.Graphics, e.Bounds, e.Index == mySelectedIndexPreview);
}
else
{
base.OnDrawItem(e);
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine("CustomListBox.DrawItem failed : " + ex, "UI");
Invalidate(e.Bounds);
}
}
