/// <summary>
/// Ctor: takes ownership of actual context menu UI.
/// </summary>
/// <param name="ctxtMenuControl">The context menu UI.</param>
public CtxtMenuForm(ICtxtMenuControl ctxtMenuControl)
{
this.ctxtMenuControl = ctxtMenuControl;
SuspendLayout();
// Configure form - borderless etc.
AutoScaleDimensions = new System.Drawing.SizeF(6.0F, 13.0F);
AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
BackColor = ZenParams.WindowColor;
ClientSize = new System.Drawing.Size(278, 244);
FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
StartPosition = System.Windows.Forms.FormStartPosition.Manual;
Name = "CtxtMenuForm";
ShowIcon = false;
ShowInTaskbar = false;
Text = "CtxtMenuForm";
TopMost = true;
// Add UI control to children, resize to accommodate it.
ctxtMenuControl.AsUserControl.Location = Point.Empty;
Controls.Add(ctxtMenuControl.AsUserControl);
ctxtMenuControl.AssumeSize();
// KK, done.
//ResumeLayout(false); // No! that screws up size.
Size = ctxtMenuControl.AsUserControl.Size;
Application.AddMessageFilter(this);
}
/// <summary>
/// <para>Called by derived controls to display a context menu.</para>
/// <para>Once shown, top form takes over ownership of provided control (will dispose it when closing context menu).</para>
/// </summary>
/// <param name="relLoc">Desired relative location, in calling control's coordinates.</param>
/// <param name="ctxtMenuCtrl">The UI to show as a context menu.</param>
protected void ShowContextMenu(Point relLoc, ICtxtMenuControl ctxtMenuCtrl)
{
Point absLoc = new Point(AbsRect.X + relLoc.X, AbsRect.Y + relLoc.Y);
Point screenLoc = CurrentParentForm.WinForm.PointToScreen(absLoc);
CurrentParentForm.ShowContextMenu(screenLoc, ctxtMenuCtrl);
}
/// <summary>
/// Ctor: takes ownership of actual context menu UI.
/// </summary>
/// <param name="ctxtMenuControl">The context menu UI.</param>
public CtxtMenuForm(ICtxtMenuControl ctxtMenuControl)
{
this.ctxtMenuControl = ctxtMenuControl;
SuspendLayout();
// Configure form - borderless etc.
AutoScaleDimensions = new System.Drawing.SizeF(6.0F, 13.0F);
AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
BackColor = ZenParams.WindowColor;
ClientSize = new System.Drawing.Size(278, 244);
FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
StartPosition = System.Windows.Forms.FormStartPosition.Manual;
Name = "CtxtMenuForm";
ShowIcon = false;
ShowInTaskbar = false;
Text = "CtxtMenuForm";
TopMost = true;
// Add UI control to children, resize to accommodate it.
ctxtMenuControl.AsUserControl.Location = Point.Empty;
Controls.Add(ctxtMenuControl.AsUserControl);
ctxtMenuControl.AssumeSize();
// KK, done.
//ResumeLayout(false); // No! that screws up size.
Size = ctxtMenuControl.AsUserControl.Size;
Application.AddMessageFilter(this);
}
/// <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;
}
}
/// <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>
protected void CloseContextMenu(ICtxtMenuControl ctxtMenuCtrl)
{
CurrentParentForm.CloseContextMenu(ctxtMenuCtrl);
}
/// <summary>
/// <para>Called by derived controls to display a context menu.</para>
/// <para>Once shown, top form takes over ownership of provided control (will dispose it when closing context menu).</para>
/// </summary>
/// <param name="relLoc">Desired relative location, in calling control's coordinates.</param>
/// <param name="ctxtMenuCtrl">The UI to show as a context menu.</param>
protected void ShowContextMenu(Point relLoc, ICtxtMenuControl ctxtMenuCtrl)
{
Point absLoc = new Point(AbsRect.X + relLoc.X, AbsRect.Y + relLoc.Y);
Point screenLoc = CurrentParentForm.WinForm.PointToScreen(absLoc);
CurrentParentForm.ShowContextMenu(screenLoc, ctxtMenuCtrl);
}
/// <summary>
/// Closes the context menu control shopwn earlier (if it's still visible at all).
/// </summary>
protected void CloseContextMenu(ICtxtMenuControl ctxtMenuCtrl)
{
CurrentParentForm.CloseContextMenu(ctxtMenuCtrl);
}
/// <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;
}
}
