void ProcessBlinkQueue()
{
int curentTickCount = Environment.TickCount;
_tickCountAtLastProcessBlinkQueue = curentTickCount;
bool anyCellInvalidated = false;
while (_blinkQueue.Count > 0 && curentTickCount - _blinkQueue[0].tickCount > BlinkTime)
{
BlinkInfo bi = _blinkQueue[0];
_blinkQueue.RemoveAt(0);
if (bi.recordIndex == -1 || bi.fieldIndex == -1) // associated record or column was deleted.
{
continue;
}
BlinkInfo bi2 = (BlinkInfo)_blinkTable[bi.GetKey()];
if (bi2 != null && bi2.tickCount == bi.tickCount)
{
_blinkTable.Clear(bi.GetKey());
}
int record = bi.recordIndex;
int rowIndex = record + 1;
int columnIndex = bi.fieldIndex + 1;
RowColumnIndex cellRowColumnIndex = new RowColumnIndex(rowIndex, columnIndex);
RenderStyles.Clear(cellRowColumnIndex);
if (IsCellVisible(cellRowColumnIndex))
{
InvalidateCellRenderStyleBackground(cellRowColumnIndex);
anyCellInvalidated = true;
}
}
if (anyCellInvalidated)
{
InvalidateVisual(false);
}
}
public BlinkState GetBlinkState(int r, int fd)
{
RowColumnIndex key = BlinkInfo.GetKey(r, fd);
BlinkInfo bi;
if (_blinkTable.TryGetValue(key, out bi))
{
return(bi.BlinkState);
}
return(BlinkState.None);
}
void Blink(ListChangedEventArgs e)
{
if (BlinkTime <= 0)
{
return;
}
ChangedFieldInfoCollection changeFields = GetChangedFields();
bool anyCellInvalidated = false;
if (changeFields != null)
{
foreach (ChangedFieldInfo ci in changeFields)
{
PropertyDescriptor pd = _pdc[ci.Name];
object item = SourceList[e.NewIndex];
DataRow row = item as DataRow;
BlinkState bs = BlinkState.None;
if (e.ListChangedType == ListChangedType.ItemAdded)
{
bs = BlinkState.NewRecord;
}
else
{
object value = ci.NewValue;
object oldValue = ci.OldValue;
int cmp = CompareColumns.CompareNullableObjects(value, oldValue);
if (cmp > 0)
{
bs = BlinkState.Increased;
if (oldValue == null || oldValue is DBNull)
{
bs = BlinkState.NewValue;
}
}
else if (cmp < 0)
{
bs = BlinkState.Reduced;
if (value == null || value is DBNull)
{
bs = BlinkState.NullValue;
}
}
}
if (bs != BlinkState.None)
{
RowColumnIndex key = BlinkInfo.GetKey(e.NewIndex, ci.FieldIndex);
BlinkInfo biOld;
if (_blinkTable.TryGetValue(key, out biOld))
{
int n = _blinkQueue.IndexOf(biOld);
if (n != -1)
{
_blinkQueue.RemoveAt(n);
}
}
BlinkInfo bi = new BlinkInfo(bs, e.NewIndex, ci.FieldIndex, Environment.TickCount, ci);
_blinkQueue.Add(bi);
_blinkTable[key] = bi;
int record = e.NewIndex;
int rowIndex = record + 1;
int columnIndex = bi.fieldIndex + 1;
RowColumnIndex cellRowColumnIndex = new RowColumnIndex(rowIndex, columnIndex);
RenderStyles.Clear(cellRowColumnIndex);
if (IsCellVisible(cellRowColumnIndex))
{
InvalidateCellRenderStyleBackground(cellRowColumnIndex);
anyCellInvalidated = true;
}
}
}
}
if (anyCellInvalidated)
{
InvalidateVisual(false);
}
}