/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* -Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
* BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
* OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
* INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
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*
* You acknowledge that Software is not designed, licensed or intended for
* use in the design, construction, operation or maintenance of any nuclear
* facility.
*/
/*
* @(#)GraphicsTest.java 1.14 03/01/23
*/
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import java.applet.Applet;
class GraphicsPanel extends Panel {
ActionListener al;
ItemListener il;
public GraphicsCards cards;
GraphicsPanel(EventListener listener) {
al = (ActionListener)listener;
il = (ItemListener)listener;
setLayout(new BorderLayout());
add("Center", cards = new GraphicsCards());
Panel p = new Panel();
//p.setLayout(new BorderLayout());
Button b = new Button("next");
b.addActionListener(al);
p.add(b);
b = new Button("previous");
b.addActionListener(al);
p.add(b);
p.add(new Label("go to:", Label.RIGHT));
Choice c = new Choice();
c.addItemListener(il);
p.add(c);
c.addItem("Arc");
c.addItem("Oval");
c.addItem("Polygon");
c.addItem("Rect");
c.addItem("RoundRect");
add("North", p);
setSize(400, 400);
}
public Dimension getPreferredSize() {
return new Dimension(200, 100);
}
}
public class GraphicsTest extends Applet
implements ActionListener, ItemListener {
GraphicsPanel mainPanel;
public void init() {
setLayout(new BorderLayout());
add("Center", mainPanel = new GraphicsPanel(this));
}
public void destroy() {
remove(mainPanel);
}
public void actionPerformed(ActionEvent e) {
String arg = e.getActionCommand();
if ("next".equals(arg)) {
((CardLayout)mainPanel.cards.getLayout()).next(mainPanel.cards);
}
else if ("previous".equals(arg)) {
((CardLayout)mainPanel.cards.getLayout()).previous(mainPanel.cards);
}
}
public void itemStateChanged(ItemEvent e) {
((CardLayout)mainPanel.cards.getLayout()).show(mainPanel.cards,(String)e.getItem());
}
public static void main(String args[]) {
AppletFrame.startApplet("GraphicsTest", "Graphics Test", args);
}
public String getAppletInfo() {
return "An interactive demonstration of some graphics.";
}
} // end class GraphicsTest
class GraphicsCards extends Panel {
public GraphicsCards() {
setLayout(new CardLayout());
add("Arc", new ArcCard());
add("Oval", new ShapeTest( new OvalShape() ) );
add("Polygon", new ShapeTest( new PolygonShape() ) );
add("Rect", new ShapeTest( new RectShape() ) );
add("RoundRect", new ShapeTest( new RoundRectShape() ) );
}
} // end class GraphicsCards
class ArcCard extends Panel {
public ArcCard() {
setLayout(new GridLayout(0, 2));
add(new ArcPanel(true));
add(new ArcPanel(false));
add(new ArcDegreePanel(true));
add(new ArcDegreePanel(false));
}
} // end class ArcCard
class ArcDegreePanel extends Panel {
boolean filled;
public ArcDegreePanel(boolean filled) {
this.filled = filled;
}
void arcSteps(Graphics g,
int step,
int x,
int y,
int w,
int h,
Color c1,
Color c2) {
int a1 = 0;
int a2 = step;
int progress = 0;
g.setColor(c1);
for (; (a1+a2) <= 360; a1 = a1+a2, a2 += 1) {
if (g.getColor() == c1) {
g.setColor(c2);
}
else {
g.setColor(c1);
}
if (filled) {
g.fillArc(x, y, w, h, a1, a2);
}
else {
g.drawArc(x, y, w, h, a1, a2);
}
progress = a1+a2;
} // end for
if (progress != 360) {
if (filled) {
g.fillArc(x, y, w, h, a1, 360 - progress);
}
else {
g.drawArc(x, y, w, h, a1, 360 - progress);
}
} // end if
} // end arcSteps()
public void paint(Graphics g) {
Rectangle r = getBounds();
arcSteps(g, 3, 0, 0, r.width, r.height, Color.orange, Color.blue);
arcSteps(g,
2,
r.width / 4,
r.height / 4,
r.width / 2,
r.height / 2,
Color.yellow,
Color.green);
arcSteps(g,
1,
(r.width * 3) / 8,
(r.height * 3) / 8,
r.width / 4,
r.height / 4,
Color.magenta,
Color.white);
} // end paint()
} // end class ArcDegreePanel
class ArcPanel extends Panel {
boolean filled;
public ArcPanel(boolean filled) {
this.filled = filled;
}
public void paint(Graphics g)
{
Rectangle r = getBounds();
g.setColor(Color.yellow);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, 0, 45);
}
else
{
g.drawArc(0, 0, r.width, r.height, 0, 45);
}
g.setColor(Color.green);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, 90, -45);
}
else
{
g.drawArc(0, 0, r.width, r.height, 90, -45);
}
g.setColor(Color.orange);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, 135, -45);
}
else
{
g.drawArc(0, 0, r.width, r.height, 135, -45);
}
g.setColor(Color.magenta);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, -225, 45);
}
else
{
g.drawArc(0, 0, r.width, r.height, -225, 45);
}
g.setColor(Color.yellow);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, 225, -45);
}
else
{
g.drawArc(0, 0, r.width, r.height, 225, -45);
}
g.setColor(Color.green);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, -135, 45);
}
else
{
g.drawArc(0, 0, r.width, r.height, -135, 45);
}
g.setColor(Color.orange);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, -45, -45);
}
else
{
g.drawArc(0, 0, r.width, r.height, -45, -45);
}
g.setColor(Color.magenta);
if (filled)
{
g.fillArc(0, 0, r.width, r.height, 315, 45);
}
else
{
g.drawArc(0, 0, r.width, r.height, 315, 45);
}
} // end paint()
} // end class ArcPanel
abstract class Shape
{
abstract void draw(Graphics g, int x, int y, int w, int h);
abstract void fill(Graphics g, int x, int y, int w, int h);
}
class RectShape extends Shape
{
void draw(Graphics g, int x, int y, int w, int h)
{
g.drawRect(x, y, w, h);
}
void fill(Graphics g, int x, int y, int w, int h)
{
g.fillRect(x, y, w, h);
}
}
class OvalShape extends Shape
{
void draw(Graphics g, int x, int y, int w, int h)
{
g.drawOval(x, y, w, h);
}
void fill(Graphics g, int x, int y, int w, int h)
{
g.fillOval(x, y, w, h);
}
}
class RoundRectShape extends Shape
{
void draw(Graphics g, int x, int y, int w, int h)
{
g.drawRoundRect(x, y, w, h, 10, 10);
}
void fill(Graphics g, int x, int y, int w, int h)
{
g.fillRoundRect(x, y, w, h, 10, 10);
}
}
class PolygonShape extends Shape
{
// class variables
Polygon p;
Polygon pBase;
public PolygonShape()
{
pBase = new Polygon();
pBase.addPoint(0, 0);
pBase.addPoint(10, 0);
pBase.addPoint(5, 15);
pBase.addPoint(10, 20);
pBase.addPoint(5, 20);
pBase.addPoint(0, 10);
pBase.addPoint(0, 0);
}
void scalePolygon(float w, float h)
{
p = new Polygon();
for (int i = 0; i < pBase.npoints; ++i)
{
p.addPoint( (int) (pBase.xpoints[i] * w),
(int) (pBase.ypoints[i] * h) );
}
}
void draw(Graphics g, int x, int y, int w, int h)
{
Graphics ng = g.create();
try {
ng.translate(x, y);
scalePolygon( (float) ( (float) w / (float) 10 ),
(float) ( (float) h / (float) 20 ) );
ng.drawPolygon(p);
} finally {
ng.dispose();
}
}
void fill(Graphics g, int x, int y, int w, int h)
{
Graphics ng = g.create();
try {
ng.translate(x, y);
scalePolygon( (float) ( (float) w / (float) 10 ),
(float) ( (float) h / (float) 20 ) );
ng.fillPolygon(p);
} finally {
ng.dispose();
}
}
}
class ShapeTest extends Panel
{
Shape shape;
int step;
public ShapeTest(Shape shape, int step)
{
this.shape = shape;
this.step = step;
}
public ShapeTest(Shape shape)
{
this(shape, 10);
}
public void paint(Graphics g) {
Rectangle bounds = getBounds();
int cx, cy, cw, ch;
Color color;
for (color=Color.red,
cx=bounds.x,
cy=bounds.y,
cw=bounds.width / 2,
ch=bounds.height;
cw > 0 && ch > 0;
cx+=step,
cy += step,
cw -= (step * 2),
ch -= (step * 2),
color=ColorUtils.darker(color, 0.9) ) {
g.setColor(color);
shape.draw(g, cx, cy, cw, ch);
}
for (cx=bounds.x + bounds.width / 2,
cy=bounds.y,
cw=bounds.width / 2, ch=bounds.height;
cw > 0 && ch > 0;
cx+=step,
cy += step,
cw -= (step * 2),
ch -= (step * 2) ) {
if (g.getColor() == Color.red) {
g.setColor(Color.blue);
}
else {
g.setColor(Color.red);
}
shape.fill(g, cx, cy, cw, ch);
} // end for
} // end paint()
} // end class ShapeTest
class ColorUtils {
static Color brighter(Color c, double factor) {
return new Color( Math.min((int)(c.getRed() *(1/factor)), 255),
Math.min((int)(c.getGreen()*(1/factor)), 255),
Math.min((int)(c.getBlue() *(1/factor)), 255) );
}
static Color darker(Color c, double factor) {
return new Color( Math.max((int)(c.getRed() *factor), 0),
Math.max((int)(c.getGreen()*factor), 0),
Math.max((int)(c.getBlue() *factor), 0) );
}
}
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