import objectdraw.*;
import java.awt.*;
import java.util.Random;

/**
 * Class representing a quilt of colored squares.
 */
public class Quilt {

    // quilt square size
    private static final int SQUARE_SIZE = 50;

    // quilt upper-left corner location
    private static final int QUILT_UPPER_LEFT_X = 50;
    private static final int QUILT_UPPER_LEFT_Y = 100;

    // for random colors of quilt squares
    private static final int NUM_COLOR_LEVELS = 256;
    private Random rand = new Random();

    // the quilt is a 2-dimensional array of solid squares and outlines
    private FilledRect[][] quiltSquares;
    
    public Quilt(int numRows, int numCols, DrawingCanvas canvas) {
        // create the quilt array
        quiltSquares = new FilledRect[numRows][numCols];

        // fill the array of quilt squares; create the quilt
        // outlines, but don't put them in an array since
        // we won't actually be doing anything with/to them

        // the y coordinate changes for each row
        int yCoord = QUILT_UPPER_LEFT_Y;
        for (int r = 0; r < quiltSquares.length; r++) {

            // the x coordinate changes for each column
            int xCoord = QUILT_UPPER_LEFT_X;
            for (int c = 0; c < quiltSquares[r].length; c++) {

                quiltSquares[r][c] = new FilledRect(xCoord, yCoord, SQUARE_SIZE, SQUARE_SIZE, canvas);

                quiltSquares[r][c].setColor(new Color(rand.nextInt(NUM_COLOR_LEVELS), 
                        rand.nextInt(NUM_COLOR_LEVELS),
                        rand.nextInt(NUM_COLOR_LEVELS)));

                new FramedRect(xCoord, yCoord, SQUARE_SIZE, SQUARE_SIZE, canvas);

                // change x coordinate for the next column
                xCoord = xCoord + SQUARE_SIZE;

            }
            // change y coordinate for the next row
            yCoord = yCoord + SQUARE_SIZE;
        }

    }  
    
    // if point is inside one of the quilt squares, return
    // a refererence to that square; otherwise return null
    public FilledRect squareSelected(Location point) {
        for (int r = 0; r < quiltSquares.length; r++) {
            for (int c = 0; c < quiltSquares[r].length; c++) {
                if (quiltSquares[r][c].contains(point)) {
                    return quiltSquares[r][c];
                }
            }    
        }
        return null;
    }
    
}