/// <summary>
/// protected method to handle the popup context menu in the <see cref="ZedGraphControl"/>.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
{
// disable context menu by default
e.Cancel = true;
var menuStrip = sender as ContextMenuStrip;
//Revision: JCarpenter 10/06
var objState = GetObjectState();
if (_masterPane == null || menuStrip == null)
{
return;
}
menuStrip.Items.Clear();
_isZooming = false;
_isPanning = false;
Cursor.Current = Cursors.Default;
_menuClickPt = this.PointToClient(Control.MousePosition);
var paneBase = _masterPane.FindPane(_menuClickPt);
if (!IsShowContextMenu || !(paneBase is GraphPane))
{
return;
}
var pane = (GraphPane)paneBase;
var menuStr = string.Empty;
var item = new ToolStripMenuItem
{
Name = "unzoom",
Tag = "unzoom"
};
if (pane == null || pane.ZoomStack.IsEmpty)
{
menuStr = ZedGraphLocale.unzoom;
}
else
{
switch (pane.ZoomStack.Top.Type)
{
case ZoomState.StateType.Zoom:
case ZoomState.StateType.WheelZoom:
menuStr = ZedGraphLocale.unzoom;
break;
case ZoomState.StateType.Pan:
menuStr = ZedGraphLocale.unpan;
break;
case ZoomState.StateType.Scroll:
menuStr = ZedGraphLocale.unscroll;
break;
}
}
//menuItem.Text = "Un-" + ( ( pane == null || pane.zoomStack.IsEmpty ) ?
// "Zoom" : pane.zoomStack.Top.TypeString );
item.Text = menuStr;
item.Click += new EventHandler(this.MenuClick_ZoomOut);
if (pane.ZoomStack.IsEmpty)
{
item.Enabled = false;
}
menuStrip.Items.Add(item);
item = new ToolStripMenuItem
{
Name = "undo_all",
Tag = "undo_all"
};
menuStr = ZedGraphLocale.undo_all;
item.Text = menuStr;
item.Click += new EventHandler(this.MenuClick_ZoomOutAll);
if (pane == null || pane.ZoomStack.IsEmpty)
{
item.Enabled = false;
}
menuStrip.Items.Add(item);
item = new ToolStripMenuItem
{
Name = "set_default",
Tag = "set_default"
};
menuStr = ZedGraphLocale.set_default;
item.Text = menuStr;
item.Click += MenuClick_RestoreScale;
menuStrip.Items.Add(item);
// separator
menuStrip.Items.Add(new ToolStripSeparator());
item = new ToolStripMenuItem
{
Name = "copy",
Tag = "copy",
Text = ZedGraphLocale.copy
};
item.Click += MenuClick_Copy;
menuStrip.Items.Add(item);
item = new ToolStripMenuItem
{
Name = "save_as",
Tag = "save_as",
Text = ZedGraphLocale.save_as
};
item.Click += MenuClick_SaveAs;
menuStrip.Items.Add(item);
item = new ToolStripMenuItem
{
Name = "page_setup",
Tag = "page_setup",
Text = ZedGraphLocale.page_setup
};
item.Click += MenuClick_PageSetup;
menuStrip.Items.Add(item);
item = new ToolStripMenuItem
{
Name = "print",
Tag = "print",
Text = ZedGraphLocale.print
};
item.Click += MenuClick_Print;
menuStrip.Items.Add(item);
// separator
menuStrip.Items.Add(new ToolStripSeparator());
item = new ToolStripMenuItem
{
Name = "show_val",
Tag = "show_val",
Text = ZedGraphLocale.show_val
};
item.Click += MenuClick_ShowValues;
item.Checked = IsShowPointValues;
menuStrip.Items.Add(item);
// if e.Cancel is set to false, the context menu does not display
// it is initially set to false because the context menu has no items
e.Cancel = false;
// Provide Callback for User to edit the context menu
//Revision: JCarpenter 10/06 - add ContextMenuObjectState objState
ContextMenuBuilder?.Invoke(this, menuStrip, _menuClickPt, objState);
}
