public ColorPicker(VisualDirection direction, float knobWidth, float minVisualLength, Color color,
bool preview, Reaction <Color> changed)
: base(preview ? direction : direction.Opposite(), HAlign.Left, VAlign.Top, true, false,
Enumerable.Empty <Control> ())
{
Changed = changed;
_hue = ColorSlider.Hue(direction, knobWidth, minVisualLength, color,
React.By <float> (ChangeHue));
_saturation = ColorSlider.Saturation(direction, knobWidth, minVisualLength, color,
React.By <float> (ChangeSaturation));
_brightness = ColorSlider.Brightness(direction, knobWidth, minVisualLength, color,
React.By <float> (ChangeBrightness));
var controls = EnumerableExt.Enumerate <Control> (_hue, _saturation, _brightness);
var contents = preview ?
EnumerableExt.Enumerate(
new Container(direction, HAlign.Center, VAlign.Center, false, false,
new Container(direction.Opposite(), HAlign.Left, VAlign.Top, false, false, controls),
Label.ColorPreview(() => _value, new SizeF(3.5f * knobWidth, 3.5f * knobWidth)))) :
controls;
Controls.AddRange(contents.Select(c => new Tuple <Control, Reaction <Control> > (c, null)));
}
