public ImageGridCell CreateCell(int x, int y)
{
Point key = new Point(x, y);
ImageGridCell cell = new ImageGridCell(x, y);
cells.Add(key, cell);
return(cell);
}
protected override void OnMouseMove(MouseEventArgs e)
{
// compute cell coord of event location
int gridX = e.Location.X - AutoScrollPosition.X;
int gridY = e.Location.Y - AutoScrollPosition.Y;
Point CellCoord = new Point(gridX / cellIncr, gridY / cellIncr);
if (dragging && (CellCoord != lastMouseCell))
{
// Might want to optimize
Invalidate();
}
// save mouse location
lastMouseLoc = e.Location;
lastMouseCell = CellCoord;
// get the cell
ImageGridCell cell;
cells.TryGetValue(CellCoord, out cell);
// hide or show the tooltip
if ((cell != null) && (cell.ToolTipText != null))
{
if (cell != lastToolTipCell)
{
Point pt = e.Location;
pt.Y += cellSize / 2;
toolTip.Show(cell.ToolTipText, this, pt);
lastToolTipCell = cell;
}
}
else
{
toolTip.Hide(base.FindForm());
}
base.OnMouseMove(e);
}
public void FreeCell(ImageGridCell cell)
{
cells.Remove(new Point(cell.X, cell.Y));
}