protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index < 0 || e.Index >= Items.Count)
{
return;
}
if (Items.Count == 0 && Focused)
{
ProtoListControlHelp.DrawFocusRectangle(e.Graphics, e.Bounds);
return;
}
// 描绘背景颜色
e.Graphics.FillRectangle(GetBackBrush(e), e.Bounds);
if (GetFocused(e))
{
ProtoListControlHelp.DrawFocusRectangle(e.Graphics, e.Bounds);
}
// 描绘文字
e.Graphics.DrawString(Items[e.Index].ToString(), Font, GetForeBrush(e), e.Bounds);
}
protected override void OnDrawItem(DrawListViewItemEventArgs e)
{
if (e.ItemIndex < 0 || e.ItemIndex >= Items.Count)
{
return;
}
if (Items.Count == 0 && Focused)
{
ProtoListControlHelp.DrawFocusRectangle(e.Graphics, e.Bounds);
return;
}
Rectangle Bounds = new Rectangle(e.Bounds.X, e.Bounds.Y, this.ClientSize.Width, e.Bounds.Height);
// TODO：修正焦点条被截断的问题。
// 描绘背景图形
e.Graphics.FillRectangle(GetBackBrush(e), Bounds);
if (GetFocused(e))
{
e.Graphics.FillRectangle(ProtoListControlHelp.GetFocusBrush(e.Bounds, BackColor), e.Bounds);
ProtoListControlHelp.DrawFocusRectangle(e.Graphics, e.Bounds);
}
// 子类描绘调用
foreach (ListViewItem.ListViewSubItem item in e.Item.SubItems)
{
OnDrawSubItem(new DrawListViewSubItemEventArgs(
e.Graphics, item.Bounds, e.Item, item, e.ItemIndex, 0, null, e.State));
}
// 补齐剩余部分
if (e.ItemIndex == Items.Count - 1)
{
int cy = e.Bounds.Y + e.Bounds.Height, count = e.ItemIndex % ProtoListControlHelp.DefaultBackColors.Count;
while (cy <= this.ClientRectangle.Height)
{
count = (count + 1) % ProtoListControlHelp.DefaultBackColors.Count;
SolidBrush ExtraBackBrush = new SolidBrush(ProtoListControlHelp.
CheckEnabled(ProtoListControlHelp.DefaultBackColors[count], Enabled));
e.Graphics.FillRectangle(ExtraBackBrush, new Rectangle(e.Bounds.X, cy, this.ClientSize.Width, e.Bounds.Height));
cy += e.Bounds.Height;
}
}
}
protected void DrawFocusRectangle(Graphics graphics, Rectangle rect)
{
ProtoListControlHelp.DrawFocusRectangle(graphics, rect);
}
