private void SetOutline(DockPane pane, DockStyle dock, int contentIndex)
{
if (dock != DockStyle.Fill)
{
var rect = pane.DisplayingRectangle;
if (dock == DockStyle.Right)
{
rect.X += rect.Width / 2;
}
if (dock == DockStyle.Bottom)
{
rect.Y += rect.Height / 2;
}
if (dock == DockStyle.Left || dock == DockStyle.Right)
{
rect.Width -= rect.Width / 2;
}
if (dock == DockStyle.Top || dock == DockStyle.Bottom)
{
rect.Height -= rect.Height / 2;
}
rect.Location = pane.PointToScreen(rect.Location);
SetDragForm(rect);
}
else if (contentIndex == -1)
{
var rect = pane.DisplayingRectangle;
rect.Location = pane.PointToScreen(rect.Location);
SetDragForm(rect);
}
else
{
using (var path = pane.TabStripControl.GetOutline(contentIndex))
{
var rectF = path.GetBounds();
var rect = new Rectangle((int)rectF.X, (int)rectF.Y, (int)rectF.Width, (int)rectF.Height);
using (var matrix = new Matrix(rect,
new[] { new Point(0, 0), new Point(rect.Width, 0), new Point(0, rect.Height) }))
{
path.Transform(matrix);
}
var region = new Region(path);
SetDragForm(rect, region);
}
}
}
protected override GraphicsPath GetOutline(int index)
{
Point[] pts = new Point[8];
if (Appearance == DockPane.AppearanceStyle.Document)
{
Rectangle rectTab = GetTabRectangle(index);
rectTab.Intersect(TabsRectangle);
int y = DockPane.PointToClient(PointToScreen(new Point(0, rectTab.Bottom))).Y;
Rectangle rectPaneClient = DockPane.ClientRectangle;
pts[0] = DockPane.PointToScreen(new Point(rectPaneClient.Left, y));
pts[1] = PointToScreen(new Point(rectTab.Left, rectTab.Bottom));
pts[2] = PointToScreen(new Point(rectTab.Left, rectTab.Top));
pts[3] = PointToScreen(new Point(rectTab.Right, rectTab.Top));
pts[4] = PointToScreen(new Point(rectTab.Right, rectTab.Bottom));
pts[5] = DockPane.PointToScreen(new Point(rectPaneClient.Right, y));
pts[6] = DockPane.PointToScreen(new Point(rectPaneClient.Right, rectPaneClient.Bottom));
pts[7] = DockPane.PointToScreen(new Point(rectPaneClient.Left, rectPaneClient.Bottom));
}
else
{
Rectangle rectTab = GetTabRectangle(index);
rectTab.Intersect(TabsRectangle);
int y = DockPane.PointToClient(PointToScreen(new Point(0, rectTab.Top))).Y;
Rectangle rectPaneClient = DockPane.ClientRectangle;
pts[0] = DockPane.PointToScreen(new Point(rectPaneClient.Left, rectPaneClient.Top));
pts[1] = DockPane.PointToScreen(new Point(rectPaneClient.Right, rectPaneClient.Top));
pts[2] = DockPane.PointToScreen(new Point(rectPaneClient.Right, y));
pts[3] = PointToScreen(new Point(rectTab.Right, rectTab.Top));
pts[4] = PointToScreen(new Point(rectTab.Right, rectTab.Bottom));
pts[5] = PointToScreen(new Point(rectTab.Left, rectTab.Bottom));
pts[6] = PointToScreen(new Point(rectTab.Left, rectTab.Top));
pts[7] = DockPane.PointToScreen(new Point(rectPaneClient.Left, y));
}
GraphicsPath path = new GraphicsPath();
path.AddLines(pts);
return(path);
}