// Controls.java
// S. Tanimoto 1 Feb. 2000

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class Controls extends Panel {

    private PolyDraw pd;
    int lineThickness;
    int gridSpacing;
    boolean useGrid;

    Checkbox useGridCB;

    Valuator gridSpacingValuator,
        redValuator, greenValuator, blueValuator;

    public int getGridSpacing() {
        return gridSpacingValuator.getValue();
    }

    public boolean usingGrid() { return useGrid; }

    public Color getColor() { 
        return new Color(redValuator.getValue(), 
                         greenValuator.getValue(), 
                         blueValuator.getValue());
    }

    Controls(PolyDraw thePD) {
	pd = thePD;
	setBackground(Color.gray);
        useGridCB = new Checkbox();

	useGridCB.addItemListener(new UseGridCBHandler());
        GridBagLayout gbl = new GridBagLayout();
	GridBagConstraints gbc = new GridBagConstraints();
        setLayout(gbl);

        gbc.gridx = 1; gbc.gridy = 1; gbc.gridwidth = 2;
	Label l1 = new Label("Use grid");
        gbl.setConstraints(l1, gbc);
        add(l1);

        gbc.gridx = 1; gbc.gridy = 2; gbc.gridwidth = 2;
        gbl.setConstraints(useGridCB, gbc);
        add(useGridCB);

	gridSpacingValuator = new Valuator("Grid spacing", 10, 50, Color.white);
	gbc.gridx = 1; gbc.gridy = 3; gbc.gridwidth = 2;
	gbl.setConstraints(gridSpacingValuator, gbc);
	add(gridSpacingValuator);

	redValuator = new Valuator("Red", 64, 256, Color.red);
	gbc.gridx = 1; gbc.gridy = 4; gbc.gridwidth = 2;
	gbl.setConstraints(redValuator, gbc);
	add(redValuator);

	greenValuator = new Valuator("Green", 64, 256, Color.green);
	gbc.gridx = 1; gbc.gridy = 5; gbc.gridwidth = 2;
	gbl.setConstraints(greenValuator, gbc);
	add(greenValuator);

	blueValuator = new Valuator("Blue", 64, 256, Color.blue);
	gbc.gridx = 1; gbc.gridy = 6; gbc.gridwidth = 2;
	gbl.setConstraints(blueValuator, gbc);
	add(blueValuator);

	lineThickness = 2;
	gridSpacing = 10;
	useGrid = false;
    }

    class UseGridCBHandler implements ItemListener {
	public void itemStateChanged(ItemEvent e) {
	    useGrid = useGridCB.getState();
	}
    }
}