using UnityEngine;
using System.Collections;


public static class ShadowAndOutline{

	public static void DrawOutline(Rect rect, string text, GUIStyle style, Color outColor, Color inColor, float size){
		float halfSize = size * 0.5F;
		GUIStyle backupStyle = new GUIStyle(style);
		Color backupColor = GUI.color;
		
		style.normal.textColor = outColor;
		GUI.color = outColor;
		
		rect.x -= halfSize;
		GUI.Label(rect, text, style);
		
		rect.x += size;
		GUI.Label(rect, text, style);
		
		rect.x -= halfSize;
		rect.y -= halfSize;
		GUI.Label(rect, text, style);
		
		rect.y += size;
		GUI.Label(rect, text, style);
		
		rect.y -= halfSize;
		style.normal.textColor = inColor;
		GUI.color = backupColor;
		GUI.Label(rect, text, style);
		
		style = backupStyle;
	}
	
	public static void DrawShadow(Rect rect, GUIContent content, GUIStyle style, Color txtColor, Color shadowColor, Vector2 direction){
		GUIStyle backupStyle = style;
		
		style.normal.textColor = shadowColor;
		rect.x += direction.x;
		rect.y += direction.y;
		GUI.Label(rect, content, style);
		
		style.normal.textColor = txtColor;
		rect.x -= direction.x;
		rect.y -= direction.y;
		GUI.Label(rect, content, style);
		
		style = backupStyle;
	}
	public static void DrawLayoutShadow(GUIContent content, GUIStyle style, Color txtColor, Color shadowColor,
	                                    Vector2 direction, params GUILayoutOption[] options){
		DrawShadow(GUILayoutUtility.GetRect(content, style, options), content, style, txtColor, shadowColor, direction);
	}
	
	public static bool DrawButtonWithShadow(Rect r, GUIContent content, GUIStyle style, float shadowAlpha, Vector2 direction){
		GUIStyle letters = new GUIStyle(style);
		letters.normal.background = null;
		letters.hover.background = null;
		letters.active.background = null;
		
		bool result = GUI.Button(r, content, style);
		
		Color color = r.Contains(Event.current.mousePosition) ? letters.hover.textColor : letters.normal.textColor;
		
		DrawShadow(r, content, letters, color, new Color(0f, 0f, 0f, shadowAlpha), direction);
		
		return result;
	}
	
	public static bool DrawLayoutButtonWithShadow(GUIContent content, GUIStyle style, float shadowAlpha,
	                                              Vector2 direction, params GUILayoutOption[] options){
		return DrawButtonWithShadow(GUILayoutUtility.GetRect(content, style, options), content, style, shadowAlpha, direction);
	}

}