/*
 * File: CircleView.java
 * 		This file is part of Tico, an application to create and	perform
 * 		interactive communication boards to be used by people with
 * 		severe motor disabilities.
 * 
 * Author: Eduardo Ferrer
 * 
 * Date: May-2012
 * 
 * Company: Dept. of Computer Sciences and Systems Engineering, Universidad de Zaragoza, Spain
 * 
 * 
 * License:
 * 		This program is free software: you can redistribute it and/or 
 * 		modify it under the terms of the GNU General Public License 
 * 		as published by the Free Software Foundation, either version 3
 * 		of the License, or (at your option) any later version.
 * 
 * 		This program is distributed in the hope that it will be useful,
 * 		but WITHOUT ANY WARRANTY; without even the implied warranty of
 * 		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * 		GNU General Public License for more details.
 * 
 * 		You should have received a copy of the GNU General Public License
 *     	along with this program.  If not, see <http://www.gnu.org/licenses/>. 
 */

package android.TICO.Views;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Paint.Style;
import android.graphics.drawable.GradientDrawable;
import android.view.View;

/**
 * Implementation of a <code>CircleView</code> view.
 * 
 * @author Eduardo Ferrer
 * @version 1.0 May, 2012
 */

public class CircleView  extends View{
	Paint paint=new Paint();
	Paint paintInterior=new Paint();
	int startX,startY,stopX,stopY;
	
	GradientDrawable gradient_color;
	
	/**
	 * Creates a new <code>CircleView</code> for the specified params.
	 * 
	 * @param startX The starting coordinate in X of the rectangle which contents the oval
	 * @param startY The starting coordinate in Y of the rectangle which contents the oval
	 * @param stopX The ending coordinate in X of the rectangle which contents the oval
	 * @param stopY The ending coordinate in Y of the rectangle which contents the oval
	 * @param context The Context the view is running in, through which it can access the current theme, resources, etc. 
	 */
	public CircleView(int startX,int startY,int stopX,int stopY,Context context){
		super(context);
		paint.setColor(Color.WHITE);
		this.startX=startX;
		this.startY=startY;
		this.stopX=stopX;
		this.stopY=stopY;
		
		paint.setStyle(Style.STROKE);
		paintInterior.setStyle(Style.FILL);
		paintInterior.setColor(Color.TRANSPARENT);
		
		gradient_color=null;
	}
	
	public void onDraw(Canvas canvas){
		RectF oval=new RectF();
		oval.set(startX, startY, stopX, stopY);
		oval.inset(paint.getStrokeWidth(), paint.getStrokeWidth());
		//interior
		if(gradient_color!=null){
			gradient_color.setBounds((int)oval.left, (int)oval.top, (int)oval.right, (int)oval.bottom);
			gradient_color.draw(canvas);
		}
		
		else 
			if(paintInterior.getColor()!=Color.TRANSPARENT)
				canvas.drawOval(oval, paintInterior);
		
		//exterior
		canvas.drawOval(oval, paint);
	}
	
	
	/**
	 * Set de <code>CircleView</code> color of the line. Note that the color is an int containing alpha as well as r,g,b. 
	 * This 32bit value is not premultiplied, meaning that its alpha can be any value, regardless of the values of r,g,b. 
	 * See the Color class for more details.
	 * 
	 * @param color  The new color (including alpha) to set as color of the circle line.  
	 */
	public void setColor(int color){
		paint.setColor(color);
	}
	
	
	/**
	 * Set the <code>CircleView</code> color of the oval interior. Note that the color is an int containing alpha as well as r,g,b. 
	 * This 32bit value is not premultiplied, meaning that its alpha can be any value, regardless of the values of r,g,b. 
	 * See the Color class for more details.
	 * 
	 * @param color  The new color (including alpha) to set as color of the oval interior.  
	 */
	public void setBackgroundColor(int color){
		gradient_color=null;
		
		paintInterior.setColor(color);
		this.invalidate();
	}
	
	
	/**
	 * Set the background frame gradient color for the <code>CircleView</code>
	 * @param colorIn The <code>gradient color</code> of the CircleView background
	 */
	public void setBackgroundDrawable(GradientDrawable colorIn){
		gradient_color=colorIn;
		gradient_color.setShape(GradientDrawable.OVAL);
		
	    //color.draw(canvas);
		this.invalidate();//force a redraw
	}
	
	
	/**
	 * Set the width for stroking. Pass 0 to stroke in hairline mode. Hairlines always draws a single pixel independent of the canva's matrix.
	 * 
	 * @param border  set the <code>CircleView</code>'s stroke width of the line.  
	 *
	 */
	public void setBorderWidth(int border){
		paint.setStrokeWidth(border);
	}
	
	
}