public void DataGridCell_Equals_Invoke_ReturnsExpected(DataGridCell cell, object other, bool expected)
{
if (other is DataGridCell otherCell)
{
Assert.Equal(expected, cell.GetHashCode().Equals(otherCell.GetHashCode()));
}
Assert.Equal(expected, cell.Equals(other));
}
private void ShowToolTipForCurrentCell(int x, int y)
{
HitTestInfo hitInfo = HitTest(x, y);
Debug.Assert(hitInfo != null, "hitInfo != null");
string cellText = string.Empty;
bool overSameCell = false;
if (hitInfo.Type == HitTestType.Cell)
{
DataGridCell hitCell = new DataGridCell(hitInfo.Row, hitInfo.Column);
overSameCell = hitCell.Equals(m_lastToolTipCell);
m_lastToolTipCell = hitCell;
// Get the column style and text for the cell under the mouse pointer.
DataGridTableStyle tableStyle = CurrentTableStyle;
if (tableStyle != null)
{
DataGridColumnStyle columnStyle = tableStyle.GridColumnStyles[hitCell.ColumnNumber];
ICellToolTip tooltipColumn = columnStyle as ICellToolTip;
if (tooltipColumn != null)
{
// This column can provide its own tool tip. Make the hit coordinates relative to the cell.
Rectangle cellBounds = GetCellBounds(hitCell);
cellText = tooltipColumn.GetCellToolTip(x - cellBounds.X, y - cellBounds.Y,
CurrencyManager, hitCell);
}
if (tooltipColumn == null || (ShowToolTipsForTextColumns && cellText == null))
{
System.Windows.Forms.DataGridTextBoxColumn textColumn = columnStyle as System.Windows.Forms.DataGridTextBoxColumn;
if (textColumn != null)
{
cellText = GetToolTipForTextColumn(x, y, hitCell, textColumn);
}
}
}
}
else
{
m_lastToolTipCell = new DataGridCell(-1, -1);
}
// If the tooltip text hasn't changed AND the mouse is over the same cell as before then
// don't make any changes. This check has to be made - if SetToolTip() is called whenever the mouse
// moves then no tooltip is displayed at all! If we check only for the same cell this doesn't allow
// for column styles like DataGridEditorColumn where not all of the cell area is the text area. If
// we check only the text then the tooltip doesn't move when the user moves the mouse from one cell
// to another cell that happens to contain the same text.
if (overSameCell && m_toolTip.GetToolTip(this) == cellText)
{
return;
}
SetToolTip(cellText);
}