//general
private void onChanged(object sender, EventArgs e)
{
this.Refresh();
//update ui
ModifiedEventArgs args = e as ModifiedEventArgs;
if (args != null && (args.Action == Action.Cleared ||
(args.Action == Action.Removed && args.Point == _selection)))
Selection = null;
else
RaiseGradientChanged();
}
/// <summary>
/// move, drag out/in a fader
/// </summary>
private bool UpdateSelection(MouseEventArgs e)
{
if (_blend == null)
return false;
if (_selection != null)
{
if (_focussel)
{
//move focus point
_blend.SetFocusPosition(_selection, PointToPos(new Point(
e.X - _offset.X,
e.Y - _offset.Y)));
}
else if (!this.ClientRectangle.Contains(e.Location))
{
// don't remove the point if dragged outside the area anymore,
// it's bloody annoying and easy to do.
////remove point if dragged out
//_tmp = _selection;
//if (_selection is ColorPoint)
// _blend.Colors.Remove(_selection as ColorPoint);
//else
// _blend.Alphas.Remove(_selection as AlphaPoint);
//_selection = null;
//RaiseSelectionChanged();
}
else
{
//move selected point
_selection.Position = PointToPos(new Point(
e.X - _offset.X,
e.Y - _offset.Y));
}
}
else if (_tmp != null && this.ClientRectangle.Contains(e.Location))
{
_tmp.Position = PointToPos(new Point(
e.X - _offset.X,
e.Y - _offset.Y));
//re-add point
if (_tmp is ColorPoint)
_blend.Colors.Add((ColorPoint)_tmp);
else
_blend.Alphas.Add((AlphaPoint)_tmp);
Selection = _tmp;
_tmp = null;
}
else
return false;
return true;
}
//select or add faders
protected override void OnMouseDown(MouseEventArgs e)
{
if (_blend != null && e.Button == MouseButtons.Left && !ReadOnly)
{
bool foc;
Selection = GetFaderUnderMouse(e.Location, ref _offset, out foc);
FocusSelection = foc;
if (_selection == null)
{
//create new color or alpha point
Rectangle area = Rectangle.Inflate(this.ClientRectangle, -BORDER, -BORDER);
double pos = PointToPos(e.Location);
_offset = Point.Empty;
//
if (_orientation == Orientation.Horizontal ?
e.Y > area.Bottom : e.X > area.Right)
{
ColorPoint pnt = new ColorPoint(_blend.GetColorAt((float)pos), pos);
_selection = pnt;
_blend.Colors.Add(pnt);
}
else if (_orientation == Orientation.Horizontal ?
e.Y < area.Y : e.X < area.X)
{
// MS: 25/09/11: disable drawing alpha points, we don't want to use them (yet).
//AlphaPoint pnt = new AlphaPoint(_blend.GetColorAt((float)pos).A, pos);
//_selection = pnt;
//_blend.Alphas.Add(pnt);
}
}
}
base.OnMouseDown(e);
}
