void ShowPlaceholder(DockToolbar bar, bool horz, int x, int y, int w, int h)
{
if (orientation != Orientation.Horizontal)
{
horz = !horz;
}
PanelToWindow(x, y, w, h, out x, out y, out w, out h);
bool created = false;
if (placeholder == null || horz != currentPlaceholderHorz)
{
HidePlaceholder();
placeholder = new PlaceholderWindow(parentFrame);
placeholderArrow1 = new ArrowWindow(parentFrame, horz ? ArrowWindow.Direction.Right : ArrowWindow.Direction.Down);
placeholderArrow2 = new ArrowWindow(parentFrame, horz ? ArrowWindow.Direction.Left : ArrowWindow.Direction.Up);
currentPlaceholderHorz = horz;
created = true;
}
int sx, sy;
this.GdkWindow.GetOrigin(out sx, out sy);
sx += x;
sy += y;
int mg = -4;
placeholder.Move(sx - mg, sy - mg);
placeholder.Resize(w + mg * 2, h + mg * 2);
if (horz)
{
placeholderArrow1.Move(sx - placeholderArrow1.Width, sy + (h / 2) - placeholderArrow1.Height / 2);
placeholderArrow2.Move(sx + w, sy + (h / 2) - placeholderArrow1.Height / 2);
}
else
{
int px = sx + w / 2 - placeholderArrow1.Width / 2;
if (px < 0)
{
px = 0;
}
placeholderArrow1.Move(px, sy - placeholderArrow1.Height);
placeholderArrow2.Move(px, sy + h);
}
if (created)
{
placeholder.Show();
placeholder.Present();
if (bar.FloatingDock != null)
{
bar.FloatingDock.Present();
}
placeholderArrow1.Present();
placeholderArrow2.Present();
}
}