/*
 * Button3D.java
 */

import java.awt.*;

/* 3D Button Object */
public class Button3D extends Label3D {
    final static int NORMAL   = 0;  /* Normal Button */
    final static int LEFT     = 1;  /* Left Triangle Button */
    final static int RIGHT    = 2;  /* Right Triangle Button */
    final static int UP       = 3;  /* Up Triangle Button */
    final static int DOWN     = 4;  /* Down Triangle Button */
    final static int S_LEFT   = 5;  /* Small Left Triangle Button */
    final static int S_RIGHT  = 6;  /* Small Right Triangle Button */
    final static int S_UP     = 7;  /* Small Up Triangle Button */
    final static int S_DOWN   = 8;  /* Small Down Triangle Button */
    final static int CHECKBTN = 9;  /* Check Button */
    int type = NORMAL;          /* Button's Type Number */
    boolean autoRepeat = true;  /* Auto Repeat */
    boolean postAction = true;  /* Notify Parent when release */
    boolean pressed = false;    /* If Button Pressed */
    boolean mousePressed = false; /* If Mouse Pressed */

    /** Normal Button with Text */
    public Button3D(String _text) {
        super(_text);
        raise = true;
        mode = 1;
    }

    /** Normal Button with Active Setting */
    public Button3D(String _text, boolean _active) {
        this(_text);
        setActive(_active);
    }

    /** Special Button */
    public Button3D(int _type) {
        super("");
        raise = true;
        mode = 1;
        type = _type;
        postAction = (_type == NORMAL) || (type == CHECKBTN); 
    }

    /** Special Button with Text */
    public Button3D(int _type, String _text) {
        this(_text);
        type = _type;
    }

    /** Special Button with Text and active setting */
    public Button3D(int _type, String _text, boolean _active) {
        this(_text);
        type = _type;
        setActive(_active);
    }

    /** Overwrite the Preferred Size Setting */
    public Dimension preferredSize() {
        switch ( type ) {
          case LEFT :
          case RIGHT :
          case UP :
          case DOWN :
            return new Dimension(base, base);
          case S_LEFT :
          case S_RIGHT :
            return new Dimension(base/2, base);
          case S_UP :
          case S_DOWN :
            return new Dimension(base, base/2);
          default :
            return new Dimension(base*ratio, base);
        }
    }

    /** Change Button Type */
    public boolean setType(int _type) {
        if ( type == _type ) return false;
        type = _type;
        repaint();
        return true;
    }

    /** Change Button Concave/Convex Mode */
    public boolean setMode(int _mode) {
        if ( mode == _mode ) return false;
        mode = _mode;
        repaint();
        return true;
    }

    /** Change Button State */
    public boolean setState(boolean _pressed) {
        if ( pressed == _pressed ) return false;
        pressed = _pressed;
        setMode(pressed ? -1 : 1);
        return true;
    }

    /** Drawing Action Here */
    public void update(Graphics g) {
        Color LT, RB;
        int i, w, h, wm, hm;
        if ( g == null ) return;
        w = size().width-1;
        h = size().height-1;
        wm = w/2;
        hm = h/2;
        if ( !pressed ) {
          LT = ltGray;
          RB = dkGray;
        } else {
          LT = dkGray;
          RB = ltGray;
        }
        switch ( type ) {
          case LEFT :
          case S_LEFT : { /* Left Button */
            g.setColor(getBackground());
            g.fillRect(0, 0, size().width, size().height);
            for (i=0; i<depth; i++) {
              g.setColor(RB);
              g.drawLine(w-i, i, w-i, h-i);
              g.drawLine(i, hm, w-i, h-i);
              g.setColor(LT);
              g.drawLine(i, hm, w-i, i);
            }
            break;
          }
          case RIGHT :
          case S_RIGHT : { /* Right Button */
            g.setColor(getBackground());
            g.fillRect(0, 0, size().width, size().height);
            for (i=0; i<depth; i++) {
              g.setColor(LT);
              g.drawLine(w-i, hm, i, i);
              g.drawLine(i, i, i, h-i);
              g.setColor(RB);
              g.drawLine(w-i, hm, i, h-i);
            }
            break;
          }
          case UP :
          case S_UP : { /* Up Button */
            g.setColor(getBackground());
            g.fillRect(0, 0, size().width, size().height);
            for (i=0; i<depth; i++) {
              g.setColor(RB);
              g.drawLine(i, h-i, w-i, h-i);
              g.drawLine(wm, i, w-i, h-i);
              g.setColor(LT);
              g.drawLine(wm, i, i, h-i);
            }
            break;
          }
          case DOWN :
          case S_DOWN : { /* Down Button */
            g.setColor(getBackground());
            g.fillRect(0, 0, size().width, size().height);
            for (i=0; i<depth; i++) {
              g.setColor(LT);
              g.drawLine(wm, h-i, i, i);
              g.drawLine(i, i, w-i, i);
              g.setColor(RB);
              g.drawLine(wm, h-i, w-i, i);
            }
            break;
          }
          default :
            super.update(g);
        }
    }

    /** Respond to a Delay Event Action */
    public boolean keyDown(Event ev, int key) {
        if ( key < 0 ) {
          if ( pressed ) {
            Notify(ev, this);
            new Delay(100, ev, this);
          } else {
            ev.id = Event.MOUSE_UP;
            Notify(ev, this);
          }
        }
        return true;
    }

    /** Mouse Down Event */
    public boolean mouseDown(Event ev, int x, int y) {
        if ( !getActive() ) return true;
        mousePressed = true;
        if ( !postAction ) {
          Notify(ev, this);
          if ( autoRepeat ) new Delay(500, -1, this);
        }
        setState(true);
        return true;
    }

    /** Mouse Up Event */
    public boolean mouseUp(Event ev, int x, int y) {
        if ( pressed ) {
          if ( type == CHECKBTN ) {
            setActive(false);
            pressed = false;
            mode = 1;
          } else setState(false);
          if ( postAction ) Notify(ev, this);
        }
        mousePressed = false;
        return true;
    }

    /** Mouse Enter Event */
    public boolean mouseEnter(Event ev, int x, int y) {
        if ( mousePressed ) setState(true);
        return true;
    }

    /** Mouse Exit Event */
    public boolean mouseExit(Event ev, int x, int y) {
        if ( mousePressed ) setState(false);
        return true;
    }
}