private void RefreshChanges()
{
Region region = new Region(Rectangle.Empty);
Rectangle rectDockArea = FullPanelEdge ? DockPanel.DockArea : DockPanel.DocumentWindowBounds;
rectDockArea = RectangleToClient(DockPanel.RectangleToScreen(rectDockArea));
if (ShouldPanelIndicatorVisible(DockState.DockLeft))
{
PanelLeft.Location = new Point(rectDockArea.X + _PanelIndicatorMargin, rectDockArea.Y + (rectDockArea.Height - PanelRight.Height) / 2);
PanelLeft.Visible = true;
region.Union(PanelLeft.Bounds);
}
else
{
PanelLeft.Visible = false;
}
if (ShouldPanelIndicatorVisible(DockState.DockRight))
{
PanelRight.Location = new Point(rectDockArea.X + rectDockArea.Width - PanelRight.Width - _PanelIndicatorMargin, rectDockArea.Y + (rectDockArea.Height - PanelRight.Height) / 2);
PanelRight.Visible = true;
region.Union(PanelRight.Bounds);
}
else
{
PanelRight.Visible = false;
}
if (ShouldPanelIndicatorVisible(DockState.DockTop))
{
PanelTop.Location = new Point(rectDockArea.X + (rectDockArea.Width - PanelTop.Width) / 2, rectDockArea.Y + _PanelIndicatorMargin);
PanelTop.Visible = true;
region.Union(PanelTop.Bounds);
}
else
{
PanelTop.Visible = false;
}
if (ShouldPanelIndicatorVisible(DockState.DockBottom))
{
PanelBottom.Location = new Point(rectDockArea.X + (rectDockArea.Width - PanelBottom.Width) / 2, rectDockArea.Y + rectDockArea.Height - PanelBottom.Height - _PanelIndicatorMargin);
PanelBottom.Visible = true;
region.Union(PanelBottom.Bounds);
}
else
{
PanelBottom.Visible = false;
}
if (ShouldPanelIndicatorVisible(DockState.Document))
{
Rectangle rectDocumentWindow = RectangleToClient(DockPanel.RectangleToScreen(DockPanel.DocumentWindowBounds));
PanelFill.Location = new Point(rectDocumentWindow.X + (rectDocumentWindow.Width - PanelFill.Width) / 2, rectDocumentWindow.Y + (rectDocumentWindow.Height - PanelFill.Height) / 2);
PanelFill.Visible = true;
region.Union(PanelFill.Bounds);
}
else
{
PanelFill.Visible = false;
}
if (ShouldPaneDiamondVisible())
{
Rectangle rect = RectangleToClient(DockPane.RectangleToScreen(DockPane.ClientRectangle));
PaneDiamond.Location = new Point(rect.Left + (rect.Width - PaneDiamond.Width) / 2, rect.Top + (rect.Height - PaneDiamond.Height) / 2);
PaneDiamond.Visible = true;
using (GraphicsPath graphicsPath = PaneDiamond.DisplayingGraphicsPath.Clone() as GraphicsPath)
{
Point[] pts = new Point[]
{
new Point(PaneDiamond.Left, PaneDiamond.Top),
new Point(PaneDiamond.Right, PaneDiamond.Top),
new Point(PaneDiamond.Left, PaneDiamond.Bottom)
};
using (Matrix matrix = new Matrix(PaneDiamond.ClientRectangle, pts))
{
graphicsPath.Transform(matrix);
}
region.Union(graphicsPath);
}
}
else
{
PaneDiamond.Visible = false;
}
Region = region;
}