/// <summary>
/// Closes the context menu control shopwn earlier (if it's still visible at all).
/// </summary>
internal void CloseContextMenu(ICtxtMenuControl ctxtMenuCtrl)
{
if (ctxtForm != null && ctxtMenuCtrl == ctxtForm.CtxtMenuControl)
{
ctxtForm.Close();
ctxtForm = null;
}
}
public override void Dispose()
{
if (ctxtForm != null)
{
ctxtForm.Dispose(); ctxtForm = null;
}
form.Dispose();
if (canvas != null)
{
try
{
canvasMutex.WaitOne();
canvas.Dispose();
canvas = null;
}
finally
{
canvasMutex.ReleaseMutex();
}
}
base.Dispose();
}
/// <summary>
/// Shows a context menu at the desired location, or the nearest best place.
/// </summary>
/// <param name="screenLoc">The desired location in screen coordinates.</param>
/// <param name="ctxtMenuCtrl">The context menu UI to show.</param>
internal void ShowContextMenu(Point screenLoc, ICtxtMenuControl ctxtMenuCtrl)
{
// If we currently have a context menu on the screen, kill it.
if (ctxtForm != null)
{
ctxtForm.Close();
ctxtForm = null;
}
// Create new form
var ff = new CtxtMenuForm(ctxtMenuCtrl);
// Calculate optimal location.
// Horizontally: centered around pointer
// Vertically: prefer above, with 3px in between
Screen scr = getScreenForPoint(screenLoc);
int x = screenLoc.X - ff.Width / 2;
if (x < scr.WorkingArea.Left)
{
x = scr.WorkingArea.Left;
}
else if (x + ff.Width > scr.WorkingArea.Right)
{
x = scr.WorkingArea.Right - ff.Width;
}
int y = screenLoc.Y - ff.Height - 3;
if (y < scr.WorkingArea.Top)
{
y = screenLoc.Y + 3;
}
ff.Location = new Point(x, y);
// Show context menu
ff.Show(form);
form.Focus();
ctxtForm = ff;
}
/// <summary>
/// Shows a context menu at the desired location, or the nearest best place.
/// </summary>
/// <param name="screenLoc">The desired location in screen coordinates.</param>
/// <param name="ctxtMenuCtrl">The context menu UI to show.</param>
internal void ShowContextMenu(Point screenLoc, ICtxtMenuControl ctxtMenuCtrl)
{
// If we currently have a context menu on the screen, kill it.
if (ctxtForm != null)
{
ctxtForm.Close();
ctxtForm = null;
}
// Create new form
var ff = new CtxtMenuForm(ctxtMenuCtrl);
// Calculate optimal location.
// Horizontally: centered around pointer
// Vertically: prefer above, with 3px in between
Screen scr = getScreenForPoint(screenLoc);
int x = screenLoc.X - ff.Width / 2;
if (x < scr.WorkingArea.Left) x = scr.WorkingArea.Left;
else if (x + ff.Width > scr.WorkingArea.Right) x = scr.WorkingArea.Right - ff.Width;
int y = screenLoc.Y - ff.Height - 3;
if (y < scr.WorkingArea.Top) y = screenLoc.Y + 3;
ff.Location = new Point(x, y);
// Show context menu
ff.Show(form);
form.Focus();
ctxtForm = ff;
}
/// <summary>
/// Closes the context menu control shopwn earlier (if it's still visible at all).
/// </summary>
internal void CloseContextMenu(ICtxtMenuControl ctxtMenuCtrl)
{
if (ctxtForm != null && ctxtMenuCtrl == ctxtForm.CtxtMenuControl)
{
ctxtForm.Close();
ctxtForm = null;
}
}
public override void Dispose()
{
if (ctxtForm != null) { ctxtForm.Dispose(); ctxtForm = null; }
form.Dispose();
if (canvas != null)
{
try
{
canvasMutex.WaitOne();
canvas.Dispose();
canvas = null;
}
finally
{
canvasMutex.ReleaseMutex();
}
}
base.Dispose();
}