public bool AppliesOnMouseDown(MouseEventArgs e, DataGridView.HitTestInfo hit)
{
if (!ShouldChangeCursor(hit, _tableState, e.X))
{
return(false);
}
bool leftedge = (e.X - hit.ColumnX) < (_tableState.ColumnWidth / 2);
if (leftedge && hit.ColumnIndex == _tableState.GetFirstVisibleDataColumnIndex())
{
return(false);
}
_operationStarted = false;
_orgMouseX = Cursor.Position.X;
_orgeX = e.X;
_orgWidth = _tableState.ColumnWidth;
_orgScroll = _tableState.GetCurrentScroll();
_orgNColumns = _tableState.CountVisibleDataColumns(hit.ColumnIndex, !leftedge);
_orgSColumns = _orgScroll / _orgWidth;
_orgSPixels = _orgScroll % _orgWidth;
_lefthalf = _tableState.GetNormalizedXCoordinate(e.X) < 0.5;
return(true);
}
public static bool ShouldChangeCursor(DataGridView.HitTestInfo hit, TableState state, int x)
{
if (state.ScalingMode == ScalingMode.ResizeQuad)
{
float f = state.GetNormalizedXCoordinate(x);
if (!((f > 0 && f < 0.25) || (f > 0.75 && f < 1)))
{
return(false);
}
if (hit.Type != DataGridViewHitTestType.ColumnHeader && hit.Type != DataGridViewHitTestType.Cell)
{
return(false);
}
}
else if (state.ScalingMode == ScalingMode.ResizeHalf)
{
if (hit.Type != DataGridViewHitTestType.ColumnHeader)
{
return(false);
}
float f = state.GetNormalizedXCoordinate(x);
if (!(f > 0 && f < 1))
{
return(false);
}
}
else
{
if (hit.Type != DataGridViewHitTestType.ColumnHeader)
{
return(false);
}
if (Math.Abs(x - hit.ColumnX) > _maxDistanceFromDivider && Math.Abs(x - hit.ColumnX - state.ColumnWidth) > _maxDistanceFromDivider)
{
return(false);
}
}
return(true);
}
public bool AppliesOnMouseDown(MouseEventArgs e, DataGridView.HitTestInfo hit)
{
if (e.Button != MouseButtons.Left)
{
return(false);
}
if (_state.ScalingMode == ScalingMode.ResizeQuad)
{
float f = _state.GetNormalizedXCoordinate(e.X);
if (f <= 0.25 || f >= 0.75)
{
return(false);
}
}
else if (_state.ScalingMode == ScalingMode.ResizeHalf)
{
if (hit.Type != DataGridViewHitTestType.Cell)
{
return(false);
}
}
else
{
if (hit.RowIndex == -1)
{
return(false);
}
if (hit.ColumnIndex < VisualizerTable.DataColumnOffset && hit.ColumnIndex != VisualizerTable.PhantomColumnIndex)
{
return(false);
}
}
_lastX = Cursor.Position.X;
_thresholdReached = false;
return(true);
}
