/// <summary>
/// gets the fader under the mouse and writes the mouseoffset
/// to offset. if no fader is under the mouse, offset is (0,0)
/// </summary>
private List <ColorGradient.Point> GetFadersUnderMouse(Point location, ref Point offset, out bool focus)
{
focus = false;
if (_blend != null)
{
using (Graphics gr = this.CreateGraphics()) {
//check selection
if (_selection != null && _selection.Count > 0)
{
//fader
if (_selection.All(x => HitsSlider(gr, x.Position, x is AlphaPoint, false, location, ref _offset)))
{
return(_selection);
}
//focus
if (_selection.All(x => HitsSlider(gr, _blend.GetFocusPosition(x), x is AlphaPoint, true, location, ref _offset)))
{
focus = true;
return(_selection);
}
}
List <ColorGradient.Point> rv = new List <ColorGradient.Point>();
//check other color faders
double targetPosition = -1;
Point rvOffset = Point.Empty;
foreach (ColorPoint pnt in _blend.Colors.SortedArray())
{
if (HitsSlider(gr, pnt.Position, false, false, location, ref rvOffset))
{
if (targetPosition < 0)
{
targetPosition = pnt.Position;
offset = rvOffset;
}
if (pnt.Position == targetPosition)
{
rv.Add(pnt);
}
}
}
return(rv);
//check other alpha faders
//foreach (AlphaPoint pnt in _blend.Alphas)
// if (HitsSlider(gr, pnt.Position, true, false, location, ref offset))
// rv.Add(pnt);
}
}
offset = Point.Empty;
return(null);
}
/// <summary>
/// gets the fader under the mouse and writes the mouseoffset
/// to offset. if no fader is under the mouse, offset is (0,0)
/// </summary>
private ColorGradient.Point GetFaderUnderMouse(Point location, ref Point offset, out bool focus)
{
focus = false;
if (_blend != null)
{
using (Graphics gr = this.CreateGraphics())
{
//check selection
if (_selection != null)
{
//fader
if (HitsSlider(gr, _selection.Position, _selection is AlphaPoint,
false, location, ref _offset))
{
return(_selection);
}
//focus
if (HitsSlider(gr, _blend.GetFocusPosition(_selection), _selection is AlphaPoint,
true, location, ref _offset))
{
focus = true; return(_selection);
}
}
//check other color faders
foreach (ColorPoint pnt in _blend.Colors)
{
if (HitsSlider(gr, pnt.Position, false, false, location, ref offset))
{
return(pnt);
}
}
//check other alpha faders
foreach (AlphaPoint pnt in _blend.Alphas)
{
if (HitsSlider(gr, pnt.Position, true, false, location, ref offset))
{
return(pnt);
}
}
}
}
offset = Point.Empty;
return(null);
}
