protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (MouseDownWidget != null)
{
MouseDownWidget.OnMouseUp(e.Location);
ConditionalRedrawWidget(MouseDownWidget);
}
if ((e.Button & MouseButtons.Left) != 0)
{
MouseDownWidget = FindWidget(e.Location);
}
else
{
MouseDownWidget = null;
}
if (MouseDownWidget != null)
{
MouseDownWidget.OnMouseDown(e.Location);
ConditionalRedrawWidget(MouseDownWidget);
}
}
protected void ConditionalLayoutWidget(CustomListViewWidget Widget)
{
if (Widget.Item.Tag == Widget)
{
Widget.ConditionalLayout(this, Widget.Item.Bounds);
}
else
{
for (int Idx = 0; Idx < Widget.Item.SubItems.Count; Idx++)
{
ListViewItem.ListViewSubItem SubItem = Widget.Item.SubItems[Idx];
if (SubItem.Tag == Widget)
{
Rectangle Bounds = SubItem.Bounds;
for (int EndIdx = Idx + 1; EndIdx < Widget.Item.SubItems.Count && Widget.Item.SubItems[EndIdx].Tag == Widget; EndIdx++)
{
Rectangle EndBounds = Widget.Item.SubItems[EndIdx].Bounds;
Bounds = new Rectangle(Bounds.X, Bounds.Y, EndBounds.Right - Bounds.X, EndBounds.Bottom - Bounds.Y);
}
Widget.ConditionalLayout(this, Bounds);
break;
}
}
}
}
protected void ConditionalRedrawWidget(CustomListViewWidget Widget)
{
if (Widget.Item.Index != -1 && Widget.RequiresLayout())
{
ConditionalLayoutWidget(Widget);
RedrawItems(Widget.Item.Index, Widget.Item.Index, true);
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (MouseDownWidget != null)
{
CustomListViewWidget Widget = MouseDownWidget;
MouseDownWidget = null;
Widget.OnMouseUp(e.Location);
ConditionalRedrawWidget(Widget);
}
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
if (MouseOverWidget != null)
{
MouseOverWidget.OnMouseLeave();
ConditionalRedrawWidget(MouseOverWidget);
MouseOverWidget = null;
Invalidate();
}
if (HoverItem != -1)
{
HoverItem = -1;
Invalidate();
}
}
public void DrawCustomSubItem(Graphics Graphics, ListViewItem.ListViewSubItem SubItem)
{
CustomListViewWidget Widget = SubItem.Tag as CustomListViewWidget;
if (Widget != null)
{
foreach (ListViewItem.ListViewSubItem OtherSubItem in Widget.Item.SubItems)
{
if (OtherSubItem.Tag == Widget)
{
if (OtherSubItem == SubItem)
{
ConditionalLayoutWidget(Widget);
Widget.Render(Graphics);
}
break;
}
}
}
}
protected CustomListViewWidget FindWidget(ListViewHitTestInfo HitTest)
{
if (HitTest.Item != null)
{
CustomListViewWidget Widget = HitTest.Item.Tag as CustomListViewWidget;
if (Widget != null)
{
return(Widget);
}
}
if (HitTest.SubItem != null)
{
CustomListViewWidget Widget = HitTest.SubItem.Tag as CustomListViewWidget;
if (Widget != null)
{
return(Widget);
}
}
return(null);
}
protected override void OnMouseMove(MouseEventArgs e)
{
ListViewHitTestInfo HitTest = this.HitTest(e.Location);
CustomListViewWidget NewMouseOverWidget = FindWidget(HitTest);
if (MouseOverWidget != null && MouseOverWidget != NewMouseOverWidget)
{
Cursor = Cursors.Arrow;
MouseOverWidget.OnMouseLeave();
ConditionalRedrawWidget(MouseOverWidget);
}
MouseOverWidget = NewMouseOverWidget;
if (MouseOverWidget != null)
{
Cursor = MouseOverWidget.Cursor;
MouseOverWidget.OnMouseMove(e.Location);
ConditionalRedrawWidget(MouseOverWidget);
}
int PrevHoverItem = HoverItem;
HoverItem = (HitTest.Item == null)? -1 : HitTest.Item.Index;
if (HoverItem != PrevHoverItem)
{
if (HoverItem != -1)
{
RedrawItems(HoverItem, HoverItem, true);
}
if (PrevHoverItem != -1 && PrevHoverItem < Items.Count)
{
RedrawItems(PrevHoverItem, PrevHoverItem, true);
}
}
base.OnMouseMove(e);
}