public DockPanel()
{
m_extender = new DockPanelExtender(this);
m_dragHandler = new DragHandler(this);
m_panes = new DockPaneCollection();
m_floatWindows = new FloatWindowCollection();
SetStyle(ControlStyles.ResizeRedraw |
ControlStyles.UserPaint |
ControlStyles.AllPaintingInWmPaint |
ControlStyles.DoubleBuffer, true);
SuspendLayout();
Font = SystemInformation.MenuFont;
m_autoHideWindow = new AutoHideWindow(this);
m_autoHideWindow.Visible = false;
m_dummyControl = new DummyControl();
m_dummyControl.Bounds = Rectangle.Empty;
m_dockWindows = new DockWindowCollection(this);
Controls.AddRange(new Control[] {
m_autoHideWindow,
m_dummyControl,
DockWindows[DockState.Document],
DockWindows[DockState.DockLeft],
DockWindows[DockState.DockRight],
DockWindows[DockState.DockTop],
DockWindows[DockState.DockBottom]
});
m_localWindowsHook = new LocalWindowsHook(HookType.WH_CALLWNDPROCRET);
m_localWindowsHook.HookInvoked += new LocalWindowsHook.HookEventHandler(this.HookEventHandler);
m_localWindowsHook.Install();
m_dummyContent = new DockContent();
ResumeLayout();
}
internal void TestDrop(DragHandler dragHandler, Point pt)
{
if (DockArea.Width <= 0 || DockArea.Height <= 0)
{
return;
}
Point ptClient = PointToClient(pt);
int dragSize = MeasurePane.DragSize;
Rectangle rectDoc = DocumentRectangle;
if (ptClient.Y - rectDoc.Top >= 0 && ptClient.Y - rectDoc.Top < dragSize &&
DockWindows[DockState.DockTop].DisplayingList.Count == 0 &&
dragHandler.IsDockStateValid(DockState.DockTop))
{
dragHandler.DropTarget.SetDropTarget(this, DockStyle.Top);
}
else if (rectDoc.Bottom - ptClient.Y >= 0 && rectDoc.Bottom - ptClient.Y < dragSize &&
DockWindows[DockState.DockBottom].DisplayingList.Count == 0 &&
dragHandler.IsDockStateValid(DockState.DockBottom))
{
dragHandler.DropTarget.SetDropTarget(this, DockStyle.Bottom);
}
else if (rectDoc.Right - ptClient.X >= 0 && rectDoc.Right - ptClient.X < dragSize &&
DockWindows[DockState.DockRight].DisplayingList.Count == 0 &&
dragHandler.IsDockStateValid(DockState.DockRight))
{
dragHandler.DropTarget.SetDropTarget(this, DockStyle.Right);
}
else if (ptClient.X - rectDoc.Left >= 0 && ptClient.X - rectDoc.Left < dragSize &&
DockWindows[DockState.DockLeft].DisplayingList.Count == 0 &&
dragHandler.IsDockStateValid(DockState.DockLeft))
{
dragHandler.DropTarget.SetDropTarget(this, DockStyle.Left);
}
else if (((ptClient.Y - rectDoc.Top >= dragSize && ptClient.Y - rectDoc.Top < 2 * dragSize) ||
(rectDoc.Bottom - ptClient.Y >= dragSize && rectDoc.Bottom - ptClient.Y < 2 * dragSize) ||
(rectDoc.Right - ptClient.X >= dragSize && rectDoc.Right - ptClient.X < 2 * dragSize) ||
(ptClient.X - rectDoc.Left >= dragSize && ptClient.X - rectDoc.Left < 2 * dragSize)) &&
DockWindows[DockState.Document].DisplayingList.Count == 0 &&
dragHandler.IsDockStateValid(DockState.Document))
{
dragHandler.DropTarget.SetDropTarget(this, DockStyle.Fill);
}
else
{
return;
}
if (dragHandler.DropTarget.SameAsOldValue)
{
return;
}
Rectangle rect = DockArea;
if (dragHandler.DropTarget.Dock == DockStyle.Top)
{
rect.Height = (int)(DockArea.Height * DockTopPortion);
}
else if (dragHandler.DropTarget.Dock == DockStyle.Bottom)
{
rect.Height = (int)(DockArea.Height * DockBottomPortion);
rect.Y = DockArea.Bottom - rect.Height;
}
else if (dragHandler.DropTarget.Dock == DockStyle.Left)
{
rect.Width = (int)(DockArea.Width * DockLeftPortion);
}
else if (dragHandler.DropTarget.Dock == DockStyle.Right)
{
rect.Width = (int)(DockArea.Width * DockRightPortion);
rect.X = DockArea.Right - rect.Width;
}
else if (dragHandler.DropTarget.Dock == DockStyle.Fill)
{
rect = DocumentRectangle;
}
rect.Location = PointToScreen(rect.Location);
dragHandler.DragOutline = DrawHelper.CreateDragOutline(rect, dragSize);
}