import java.awt.*;
import java.io.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.Color;

public class MouseHandler implements MouseListener,MouseMotionListener,ItemListener
{
	int infoType;
	float result[] = new float[3];
	AIPP myframe;	
	Point curPos = new Point(0,0);
	
	MouseHandler(AIPP temp)
	{
		myframe = temp;
		infoType = 1;
	}

	public void itemStateChanged(ItemEvent e)
	{
		if(e.getSource() instanceof CheckboxMenuItem)
		{
			String label=((CheckboxMenuItem)e.getSource()).getLabel();
			if (label.equals("HSV"))
			{
				infoType = 1;
				myframe.labm.setState(false);
				myframe.yiqm.setState(false);
				myframe.hsvm.setState(true);
				myframe.statusBar.setText("HSV Info Selected");
			}
			else if (label.equals("CIEL*a*b*"))
			{
				infoType = 2;
				myframe.hsvm.setState(false);
				myframe.yiqm.setState(false);
				myframe.labm.setState(true);
				myframe.statusBar.setText("CIEL*a*b* Info Selected");
			}
			else if (label.equals("YIQ"))
			{
				infoType = 3;
				myframe.labm.setState(false);
				myframe.hsvm.setState(false);
				myframe.yiqm.setState(true);
				myframe.statusBar.setText("YIQ Info Selected");
			}
		}		
	}
	
	private void RGBtoHSV(int r,int g,int b)
	{
		// From www.cs.rit.edu web site
		float rf,gf,bf;
		float min,max,delta;
		
		// scale to [0,1] range
		rf = 0.0039215f * r;	// 0..1
		gf = 0.0039215f * g;	// 0..1
		bf = 0.0039215f * b;	// 0..1
		min = Math.min(Math.min(rf,gf),bf);
		max = Math.max(Math.max(rf,gf),bf);
		delta = max-min;
		
		result[2] = max;
		
		if (max != 0.0)
		{
			result[1] = delta/max;
		}
		else
		{
			result[1] = 0;
			result[0] = -1;
		}
		
		if (rf == max)
			result[0] = (gf-bf)/delta;
		else if (g == max)
			result[0] = (bf-rf)/delta;
		else
			result[0] = (rf-gf)/delta;
		
		result[0] = (float)(result[0]*60.0f);
		if (result[0] < 0.0)
			result[0] = (float)(result[0]+360.0f);
		
		result[0] = (float)(result[0]/360.0f);
		format();
	}
	
	private void RGBtoLab(int r,int g,int b)
	{
		// From www.cs.rit.edu web site
		//[ R ]   [  3.240479 -1.537150 -0.498535 ]   [ X ]
		//[ G ] = [ -0.969256  1.875992  0.041556 ] * [ Y ]
		//[ B ]   [  0.055648 -0.204043  1.057311 ]   [ Z ]
		
		float rf,gf,bf,X,Y,Z;

		// scale to [0,1] range
		rf = 0.0039215f * r;	// 0..1
		gf = 0.0039215f * g;	// 0..1
		bf = 0.0039215f * b;	// 0..1

		X = 0.431f*rf + 0.342f*gf + 0.178f*bf;
		Y = 0.222f*rf + 0.707f*gf + 0.071f*bf;
		Z = 0.020f*rf + 0.130f*gf + 0.939f*bf;

		if( Y > 0.008856 )
			result[0] = (float)( 116f * Math.pow( Y, 0.3333333 ) - 16 ); 
		else
			result[0] = 903.3f * Y;
                
		result[1] = 500f * (float)( Math.pow( X, 0.3333333) - Math.pow( Y, 0.3333333) );
		result[2] = 200f * (float)( Math.pow( Y, 0.3333333) - Math.pow( Z, 0.3333333) );
		format();
	}
	
	private void RGBtoYIQ(int r,int g,int b)
	{
		// From www.cs.rit.edu web site
		//[ Y ]     [ 0.299   0.587   0.114 ] [ R ]
		//[ I ]  =  [ 0.596  -0.275  -0.321 ] [ G ]
		//[ Q ]     [ 0.212  -0.523   0.311 ] [ B ]

		result[0] = ((0.299f * r) + (0.587f * g) + (0.114f * b)) / 256;
		result[1] = ((0.596f * r) - (0.274f * g) - (0.322f * b)) / 256;
		result[2] = ((0.212f * r) - (0.523f * g) + (0.311f * b)) / 256;
		format();
	}
	
	private void format()
	{
		// round to two decimal places
		result[0] = Math.round(result[0]*100.0f)/100.0f;
		result[1] = Math.round(result[1]*100.0f)/100.0f;
		result[2] = Math.round(result[2]*100.0f)/100.0f;
	}
	
	public void mouseMoved (MouseEvent e)
	{
		int x1,y1,r,g,b;

		if (e.getSource() instanceof Canvas)
		{
			curPos.x = e.getX();
			curPos.y = e.getY();
			
			if (curPos.x < myframe.imageSize.width && curPos.y < myframe.imageSize.height && myframe.infoBox == true)
			{
				r=(int)(myframe.currentImageArray[curPos.x+curPos.y*myframe.imageSize.width]>>16)&0xff;
				g=(int)(myframe.currentImageArray[curPos.x+curPos.y*myframe.imageSize.width]>>8)&0xff;
				b=(int)(myframe.currentImageArray[curPos.x+curPos.y*myframe.imageSize.width])&0xff;

				myframe.infoPopup.x.setText("X: " + curPos.x);
				myframe.infoPopup.y.setText("Y: " + curPos.y);
				myframe.infoPopup.r.setText("R: " + r);
				myframe.infoPopup.g.setText("G: " + g);
				myframe.infoPopup.b.setText("B: " + b);

				if (infoType == 1)
				{
					RGBtoHSV(r,g,b);
					myframe.infoPopup.h.setText("H: " + result[0]);
					myframe.infoPopup.s.setText("S: " + result[1]);
					myframe.infoPopup.v.setText("V: " + result[2]);
				}
				else if (infoType == 2)
				{
					RGBtoLab(r,g,b);
					myframe.infoPopup.h.setText("L: " + result[0]);
					myframe.infoPopup.s.setText("a: " + result[1]);
					myframe.infoPopup.v.setText("b: " + result[2]);
				}
				else if (infoType == 3)
				{
					RGBtoYIQ(r,g,b);
					myframe.infoPopup.h.setText("Y: " + result[0]);
					myframe.infoPopup.s.setText(" I: " + result[1]);
					myframe.infoPopup.v.setText("Q: " + result[2]);
				}
			}	
		}
	}

	public void mouseDragged(MouseEvent e)
	{
	}

	public void mousePressed(MouseEvent e)
	{
	}

	public void mouseReleased(MouseEvent e)
	{
	}

	public void mouseEntered(MouseEvent e)
	{
	}

	public void mouseExited(MouseEvent e)
	{
	}

	public void mouseClicked(MouseEvent e)
	{
	}	
		
	public void performEffect()
	{
	}
}