public override void Undo(GraphicsList list)
{
list.UnselectAll();
// Add all objects from cloneList to list.
foreach (DrawObject o in cloneList)
{
list.Add(o);
}
}
public override void Undo(GraphicsList list)
{
list.UnselectAll();
// Add all objects from cloneList to list.
int n = cloneList.Count;
for (int i = n - 1; i >= 0; i--)
{
list.Insert(indexList[i], cloneList[i]);
}
}
public override void Undo(GraphicsList list)
{
list.UnselectAll();
// Add all objects from cloneList to list.
int n = cloneList.Count;
for (int i = n - 1; i >= 0; i--)
{
list.Insert(indexList[i], cloneList[i]);
}
}
/// <summary>
/// Right-click handler
/// </summary>
/// <param name="e"></param>
private void OnContextMenu(MouseEventArgs e)
{
// Change current selection if necessary
var point = new Point(e.X, e.Y);
int n = GraphicsList.Count;
DrawObject o = null;
for (int i = 0; i < n; i++)
{
if (GraphicsList[i].HitTest(point) == 0)
{
o = GraphicsList[i];
break;
}
}
if (o != null)
{
if (!o.Selected)
{
GraphicsList.UnselectAll();
}
// Select clicked object
o.Selected = true;
_bringToFrontToolStripMenuItem.Enabled = true;
_sendToBackToolStripMenuItem.Enabled = true;
_cutToolStripMenuItem.Enabled = true;
_copyToolStripMenuItem.Enabled = true;
_deleteToolStripMenuItem.Enabled = true;
}
else
{
_bringToFrontToolStripMenuItem.Enabled = false;
_sendToBackToolStripMenuItem.Enabled = false;
_cutToolStripMenuItem.Enabled = false;
_copyToolStripMenuItem.Enabled = false;
_deleteToolStripMenuItem.Enabled = false;
GraphicsList.UnselectAll();
}
_pasteToolStripMenuItem.Enabled = GraphicsList.AreItemsInMemory();
_contextMenuStrip.Show(MousePosition);
Refresh();
}
/// <summary>
/// Right-click handler
/// </summary>
/// <param name="e"></param>
private void OnContextMenu(MouseEventArgs e)
{
// Change current selection if necessary
Point point = new Point(Math.Abs(this.AutoScrollPosition.X) + e.X, Math.Abs(this.AutoScrollPosition.Y) + e.Y);
int n = GraphicsList.Count;
DrawObject o = null;
for (int i = 0; i < n; i++)
{
if (GraphicsList[i].HitTest(point) == 0)
{
o = GraphicsList[i];
break;
}
}
if (o != null)
{
if (!o.Selected)
{
GraphicsList.UnselectAll();
}
// Select clicked object
o.Selected = true;
}
else
{
GraphicsList.UnselectAll();
}
Refresh(); // in the case selection was changed
// Show context menu.
// Context menu items are filled from owner form Edit menu items.
m_ContextMenu = new ContextMenuStrip();
int nItems = owner.ContextParent.DropDownItems.Count;
// Read Edit items and move them to context menu.
// Since every move reduces number of items, read them in reverse order.
// To get items in direct order, insert each of them to beginning.
for (int i = nItems - 1; i >= 0; i--)
{
m_ContextMenu.Items.Insert(0, owner.ContextParent.DropDownItems[i]);
}
// Show context menu for owner form, so that it handles items selection.
// Convert pointscroll from this window coordinates to owner's coordinates.
point.X += this.Left;
point.Y += this.Top;
Point org = new Point(e.X, e.Y);
m_ContextMenu.Show(owner, org);
Owner.SetStateOfControls(); // enable/disable menu items
// Context menu is shown, but owner's Edit menu is now empty.
// Subscribe to context menu Closed event and restore items there.
m_ContextMenu.Closed += delegate(object sender, ToolStripDropDownClosedEventArgs args)
{
if (m_ContextMenu != null) // precaution
{
nItems = m_ContextMenu.Items.Count;
for (int k = nItems - 1; k >= 0; k--)
{
owner.ContextParent.DropDownItems.Insert(0, m_ContextMenu.Items[k]);
}
}
};
}
public override void Redo(GraphicsList list)
{
list.UnselectAll();
list.Add(drawObject);
}
public override void Redo(GraphicsList list)
{
list.UnselectAll();
list.Add(drawObject);
}
