com.unity.uiextensions/Scripts/Controls/HSVPicker/HsvSliderPicker.cs

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///Credit judah4
///Sourced from - http://forum.unity3d.com/threads/color-picker.267043/
using UnityEngine.EventSystems;
namespace UnityEngine.UI.Extensions
{
public class HsvSliderPicker : MonoBehaviour, IDragHandler, IPointerDownHandler
{
public HSVPicker picker;
void PlacePointer(PointerEventData eventData)
{
var pos = new Vector2(eventData.position.x - picker.hsvSlider.rectTransform.position.x, picker.hsvSlider.rectTransform.position.y - eventData.position.y);
pos.y /= picker.hsvSlider.rectTransform.rect.height * picker.hsvSlider.canvas.transform.lossyScale.y;
//Debug.Log(eventData.position.ToString() + " " + picker.hsvSlider.rectTransform.position + " " + picker.hsvSlider.rectTransform.rect.height);
pos.y = Mathf.Clamp(pos.y, 0, 1f);
picker.MovePointer(pos.y);
}
public void OnDrag(PointerEventData eventData)
{
PlacePointer(eventData);
}
public void OnPointerDown(PointerEventData eventData)
{
PlacePointer(eventData);
}
}
}