private bool MouseMoveAction(int x, int y, MouseButtons b)
{
switch (action)
{
case MouseAction.Select:
if (selrect != Rectangle.Empty)
{
parent.cview.InvalidatePage(selrect);
}
selrect.X = Math.Min(x, selx);
selrect.Y = Math.Min(y, sely);
selrect.Width = Math.Abs(x - selx);
selrect.Height = Math.Abs(y - sely);
parent.cview.InvalidatePage(selrect);
break;
case MouseAction.Move:
// on first move
if (first_move)
{
if (original_selected != null)
{
parent.SelectedObjects.Remove(original_selected);
original_selected = null;
}
if (moveitem != null)
{
if (moveitem is IStateObject)
{
movestates[moveitem] = (moveitem as IStateObject).GetState();
}
if (!(moveitem as GuiObject).selected)
{
parent.SelectedObjects.Clear();
parent.SelectedObjects.Add(moveitem as GuiObject);
}
}
else
{
parent.SelectedObjects.Clear();
foreach (GuiObject t in movelist)
{
parent.SelectedObjects.Add(t);
}
foreach (GuiObject t in movelist)
{
if (t is IStateObject)
{
movestates[t] = (t as IStateObject).GetState();
}
}
}
AddAssociatedObjects();
first_move = false;
}
// usual move
if (moveitem != null)
{
moveitem.Moving(x, y, ref moveux, ref moveuy);
}
else
{
foreach (IMoveMultiple i in movelist)
{
i.ShiftShape(x - selx, y - sely);
}
selx = x;
sely = y;
}
break;
case MouseAction.Scroll:
parent.cview.AdjustPageCoords(selx - x, sely - y);
first_move = false;
break;
case MouseAction.CreateConnection:
conn.Invalidate();
conn.InvalidateTemporary();
conn.second.item = parent.FindItem(x, y, out moveux, out moveuy, true) as IAcceptConnection;
if (conn.second.item == null || conn.second.item == conn.first.item)
{
conn.second.x = x;
conn.second.y = y;
conn.second.item = null;
}
else
{
conn.second.item.coord_nearest(x, y, out conn.second.ux, out conn.second.uy);
conn.second.UpdatePosition(true);
}
conn.DoCreationFixup();
conn.InvalidateTemporary();
conn.Invalidate();
break;
}
return(action != MouseAction.Scroll);
}
public override void MouseDown(int x, int y, MouseButtons b, Keys modif, int realx, int realy)
{
// Left mouse button
if (action != MouseAction.None)
{
return;
}
if (b == MouseButtons.Left)
{
if (current_operation == MouseOperation.DrawComment || current_operation == MouseOperation.DrawPackage)
{
switch (current_operation)
{
case MouseOperation.DrawComment:
moveitem = GuiElementFactory.CreateMemo(parent, x, y);
break;
case MouseOperation.DrawPackage:
moveitem = GuiElementFactory.CreatePackage(parent, x, y);
break;
}
first_move = true;
moveux = 0;
moveuy = 0;
action = MouseAction.Move;
}
else if ((modif & Keys.Control) == Keys.Control || current_operation == MouseOperation.DrawConnection)
{
conn_item = parent.FindItem(x, y, out moveux, out moveuy, true) as IAcceptConnection;
if (conn_item == null)
{
action = MouseAction.Scroll;
selx = x;
sely = y;
return;
}
int ux;
float uy;
conn_item.coord_nearest(x, y, out ux, out uy);
action = MouseAction.CreateConnection;
conn = new GuiConnection(new GuiConnectionPoint(conn_item, ux, uy, 0), new GuiConnectionPoint(x, y, 1), conn_type, parent, conn_type == UmlRelationType.Attachment ? GuiConnectionStyle.Line : conn_style);
conn.first.item.coord_nearest(x, y, out conn.first.ux, out conn.first.uy);
conn.first.UpdatePosition(true);
conn.DoCreationFixup();
conn.InvalidateTemporary();
conn.Invalidate();
}
else if ((modif & Keys.Shift) == Keys.Shift)
{
GuiObject obj = parent.FindItem(x, y, false);
if (obj != null)
{
parent.SelectedObjects.Add(obj);
obj.Invalidate();
}
}
else
{
// Left button click:
// select
// move, move multiple
GuiObject s = parent.FindItem(x, y, out moveux, out moveuy, false);
if (s == null)
{
parent.SelectedObjects.Clear();
action = MouseAction.Select;
selx = x;
sely = y;
return;
}
if (!s.selected)
{
parent.SelectedObjects.Clear();
parent.SelectedObjects.Add(s);
}
// deciding: to move, or not ...
moveitem = null;
movelist = null;
movestates.Clear();
original_selected = null;
GuiObject t = parent.FindItem(x, y, out moveux, out moveuy, true);
if (t != null)
{
if (t is IMoveRedirect)
{
if (t.selected)
{
original_selected = t;
}
moveitem = (t as IMoveRedirect).MoveRedirect(ref moveux, ref moveuy);
}
else if (t is IMoveMultiple && (t as IMoveMultiple).CanMoveInGroup)
{
movelist = new ArrayList();
if (!t.selected)
{
movelist.Add(t);
}
foreach (GuiObject o in parent.SelectedObjects)
{
if (o is IMoveMultiple && (o as IMoveMultiple).CanMoveInGroup)
{
movelist.Add(o);
}
}
selx = x;
sely = y;
}
else if (t is IMoveable && (t as IMoveable).IsMoveable(x, y))
{
moveitem = t as IMoveable;
}
if (moveitem != null || movelist != null)
{
first_move = true;
action = MouseAction.Move;
}
else if (t is IClickable)
{
(t as IClickable).LeftClick(false, x, y);
}
}
}
}
else if (b == MouseButtons.Right)
{
ISelectable obj = parent.FindItem(x, y, true) as ISelectable;
if (obj != null)
{
if (obj is IDropMenu)
{
parent.SelectedObjects.Clear();
parent.SelectedObjects.Add(obj as GuiObject);
System.Windows.Forms.ContextMenu m = new ContextMenu();
(obj as IDropMenu).AddMenuItems(m, x, y);
if (m.MenuItems.Count > 0)
{
m.Show(parent.cview, new Point(realx, realy));
}
}
}
else
{
action = MouseAction.Scroll;
Cursor.Current = Cursors.Hand;
selx = x;
sely = y;
menurealx = realx;
menurealy = realy;
first_move = true;
}
}
}