/// <summary>
/// Returns the optimum window position in relation to the specified notify icon.
/// </summary>
/// <param name="notifyicon">The notify icon that the window should be aligned to.</param>
/// <param name="windowwidth">The width of the window.</param>
/// <param name="windowheight">The height of the window.</param>
/// <param name="dpi">The system's DPI (in relative units: 1.0 = 96 DPI, 1.25 = 120 DPI, etc.).</param>
/// <param name="pinned">Whether the window is pinned open or not. Affects positioning in Windows 7 only.</param>
/// <returns>A Point specifying the suggested location of the window (top left point).</returns>
public static Point GetWindowPosition(NotifyIcon notifyicon, double windowwidth, double windowheight, double dpi, bool pinned)
{
// retrieve taskbar rect
Rectangle taskbarRectangle = Taskbar.GetTaskbarRectangle();
// retrieve notify icon location
Rectangle nipositiontemp = NotifyIconHelpers.GetNotifyIconRectangle(notifyicon, true);
// if our functions can't find the rectangle, align it to a corner of the screen
Rectangle niposition;
if (nipositiontemp == Rectangle.Empty)
{
switch (Taskbar.GetTaskbarEdge())
{
case Taskbar.TaskbarEdge.Bottom: // bottom right corner
niposition = new Rectangle(taskbarRectangle.Right - 1, taskbarRectangle.Bottom - 1, 1, 1);
break;
case Taskbar.TaskbarEdge.Top: // top right corner
niposition = new Rectangle(taskbarRectangle.Right - 1, taskbarRectangle.Top, 1, 1);
break;
case Taskbar.TaskbarEdge.Right: // bottom right corner
niposition = new Rectangle(taskbarRectangle.Right - 1, taskbarRectangle.Bottom - 1, 1, 1);
break;
case Taskbar.TaskbarEdge.Left: // bottom left corner
niposition = new Rectangle(taskbarRectangle.Left, taskbarRectangle.Bottom - 1, 1, 1);
break;
default:
goto case Taskbar.TaskbarEdge.Bottom;
}
}
else
{
niposition = (Rectangle)nipositiontemp;
}
// check if notify icon is in the fly-out
bool inflyout = NotifyIconHelpers.IsRectangleInFlyOut(niposition);
// if the window is pinned open and in the fly-out (Windows 7 only),
// we should position the window above the 'show hidden icons' button
if (inflyout && pinned)
{
niposition = (Rectangle)NotifyArea.GetButtonRectangle();
}
// determine centre of notify icon
Point nicentre = new Point(niposition.Left + (niposition.Width / 2), niposition.Top + (niposition.Height / 2));
// get window offset from edge
double edgeoffset = WindowEdgeOffset * dpi;
// get working area bounds
Rectangle workarea = GetWorkingArea(niposition);
// calculate window position
double windowleft = 0, windowtop = 0;
switch (Taskbar.GetTaskbarEdge())
{
case Taskbar.TaskbarEdge.Bottom:
// horizontally centre above icon
windowleft = nicentre.X - (windowwidth / 2);
if (inflyout)
{
windowtop = niposition.Top - windowheight - edgeoffset;
}
else
{
windowtop = taskbarRectangle.Top - windowheight - edgeoffset;
}
break;
case Taskbar.TaskbarEdge.Top:
// horizontally centre below icon
windowleft = nicentre.X - (windowwidth / 2);
if (inflyout)
{
windowtop = niposition.Bottom + edgeoffset;
}
else
{
windowtop = taskbarRectangle.Bottom + edgeoffset;
}
break;
case Taskbar.TaskbarEdge.Left:
// vertically centre to the right of icon (or above icon if in flyout and not pinned)
if (inflyout && !pinned)
{
windowleft = nicentre.X - (windowwidth / 2);
windowtop = niposition.Top - windowheight - edgeoffset;
}
else
{
windowleft = taskbarRectangle.Right + edgeoffset;
windowtop = nicentre.Y - (windowheight / 2);
}
break;
case Taskbar.TaskbarEdge.Right:
// vertically centre to the left of icon (or above icon if in flyout and not pinned)
if (inflyout && !pinned)
{
windowleft = nicentre.X - (windowwidth / 2);
windowtop = niposition.Top - windowheight - edgeoffset;
}
else
{
windowleft = taskbarRectangle.Left - windowwidth - edgeoffset;
windowtop = nicentre.Y - (windowheight / 2);
}
break;
default:
goto case Taskbar.TaskbarEdge.Bottom; // should be unreachable
}
//// check that the window is within the working area
//// if not, put it next to the closest edge
if (windowleft + windowwidth + edgeoffset > workarea.Right) // too far right
{
windowleft = workarea.Right - windowwidth - edgeoffset;
}
else if (windowleft < workarea.Left) // too far left
{
windowleft = workarea.Left + edgeoffset;
}
if (windowtop + windowheight + edgeoffset > workarea.Bottom) // too far down
{
windowtop = workarea.Bottom - windowheight - edgeoffset;
}
//// the window should never be too far up, so we can skip checking for that
return(new Point((int)windowleft, (int)windowtop));
}