public GroupPanel(int l = 0)
{
InitializeComponent();
Id = Guid.NewGuid().ToString();
AllowDrop = true;
dragTo = DragTo.None;
DoubleBuffered = true;
SetStyle(ControlStyles.DoubleBuffer | ControlStyles.OptimizedDoubleBuffer | ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
UpdateStyles();
tpanel = new TabControl()
{
Dock = DockStyle.Fill
};
tpanel.MouseDown += tpanel_MouseDown;
tpanel.MouseUp += tpanel_MouseUp;
tpanel.Enter += Tpanel_Enter;
Controls.Add(tpanel);
level = l;
}
protected override void OnDragLeave(EventArgs e)
{
tp_mask.Visible = false;
dragTo = DragTo.None;
}
protected override void OnDragDrop(DragEventArgs drgevent)
{
tp_mask.Visible = false;
if (dragTo == DragTo.None)
{
return;
}
var data = drgevent.Data.GetData(typeof(DragData)) as DragData;
if (data == null)
{
return;
}
if (tpanel.TabPages.Count == 1 && data.Id == Id)
{
return;
}
if (dragTo == DragTo.Center)
{
if (data.Id == Id)
{
return;
}
tpanel.TabPages.Add(data.Tab);
tpanel.Visible = true;
if (spanel != null)
{
spanel.Visible = false;
}
}
else
{
if (tpanel.TabPages.Count == 1 && data.Id == Id)
{
return;
}
var tps1 = new List <TabPage>();
var tps2 = new List <TabPage>();
tps1.Add(data.Tab);
tpanel.TabPages.Remove(data.Tab);
tps2.AddRange(tpanel.TabPages.Cast <TabPage>().ToArray());
InitSpanel();
if (dragTo == DragTo.Top || dragTo == DragTo.Left)
{
spanel.SetTabs(tps1.ToArray(), tps2.ToArray());
}
else
{
spanel.SetTabs(tps2.ToArray(), tps1.ToArray());
}
if (dragTo == DragTo.Top || dragTo == DragTo.Bottom)
{
spanel.SetDirection(Orientation.Horizontal);
}
else
{
spanel.SetDirection(Orientation.Vertical);
}
dragTo = DragTo.None;
tpanel.Visible = false;
spanel.Visible = true;
}
data.Source.DropDone();
}
protected override void OnDragOver(DragEventArgs drgevent)
{
var data = drgevent.Data.GetData(typeof(DragData)) as DragData;
if (data == null)
{
return;
}
drgevent.Effect = DragDropEffects.Move;
var wsd = Width / 3;
var hsd = Height / 3;
var pt = PointToClient(new Point(drgevent.X, drgevent.Y));
if (pt.X > wsd && pt.X < Width - wsd && pt.Y > hsd && pt.Y < Height - hsd)
{
if (data.Id == Id)
{
return;
}
tp_mask.Width = Width;
tp_mask.Height = Height;
tp_mask.Left = 0;
tp_mask.Top = 0;
tp_mask.Visible = true;
dragTo = DragTo.Center;
}
else if (pt.X < wsd || pt.Y < hsd)
{
if (pt.X < wsd || pt.X < pt.Y)
{
tp_mask.Width = Width / 2;
tp_mask.Height = Height;
dragTo = DragTo.Left;
}
else
{
tp_mask.Width = Width;
tp_mask.Height = Height / 2;
dragTo = DragTo.Top;
}
tp_mask.Left = 0;
tp_mask.Top = 0;
tp_mask.Visible = true;
}
else if (pt.X > Width - wsd || pt.Y > Height - hsd)
{
if (pt.X > Width - wsd || pt.X > pt.Y)
{
tp_mask.Width = Width / 2;
tp_mask.Height = Height;
tp_mask.Left = Width - tp_mask.Width;
tp_mask.Top = 0;
dragTo = DragTo.Right;
}
else
{
tp_mask.Width = Width;
tp_mask.Height = Height / 2;
tp_mask.Top = Height - tp_mask.Height;
tp_mask.Left = 0;
dragTo = DragTo.Bottom;
}
tp_mask.Visible = true;
}
else
{
tp_mask.Visible = false;
dragTo = DragTo.None;
}
}
