JDK14/Java14源码在线阅读
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package java2d.demos.Composite;
import static java.awt.Color.BLACK;
import static java.awt.Color.BLUE;
import static java.awt.Color.CYAN;
import static java.awt.Color.GREEN;
import static java.awt.Color.LIGHT_GRAY;
import static java.awt.Color.MAGENTA;
import static java.awt.Color.ORANGE;
import static java.awt.Color.PINK;
import static java.awt.Color.RED;
import static java.awt.Color.WHITE;
import static java.awt.Color.YELLOW;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.TexturePaint;
import java.awt.geom.Arc2D;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.QuadCurve2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import java2d.AnimatingControlsSurface;
import java2d.CustomControls;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JSlider;
import javax.swing.JToolBar;
import javax.swing.SwingConstants;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/**
* Animation of compositing shapes, text and images fading in and out.
*/
@SuppressWarnings("serial")
public final class FadeAnim extends AnimatingControlsSurface {
private static final TexturePaint texturePaint;
static {
int w = 10;
int h = 10;
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D gi = bi.createGraphics();
Color oc = BLUE;
Color ic = GREEN;
gi.setPaint(new GradientPaint(0, 0, oc, w * .35f, h * .35f, ic));
gi.fillRect(0, 0, w / 2, h / 2);
gi.setPaint(new GradientPaint(w, 0, oc, w * .65f, h * .35f, ic));
gi.fillRect(w / 2, 0, w / 2, h / 2);
gi.setPaint(new GradientPaint(0, h, oc, w * .35f, h * .65f, ic));
gi.fillRect(0, h / 2, w / 2, h / 2);
gi.setPaint(new GradientPaint(w, h, oc, w * .65f, h * .65f, ic));
gi.fillRect(w / 2, h / 2, w / 2, h / 2);
texturePaint = new TexturePaint(bi, new Rectangle(0, 0, w, h));
}
private static BasicStroke bs = new BasicStroke(6);
private static Font[] fonts = {
new Font(Font.SERIF, Font.PLAIN, 64),
new Font(Font.SERIF, Font.BOLD | Font.ITALIC, 24),
new Font(Font.MONOSPACED, Font.BOLD, 36),
new Font(Font.SANS_SERIF, Font.BOLD | Font.ITALIC, 48),
new Font(Font.SANS_SERIF, Font.PLAIN, 52) };
private static String[] strings = {
"Alpha", "Composite", "Src", "SrcOver",
"SrcIn", "SrcOut", "Clear", "DstOver", "DstIn" };
private static String[] imgs = {
"jumptojavastrip.png", "duke.png", "star7.png" };
private static Paint[] paints = {
RED, BLUE, GREEN, MAGENTA,
ORANGE, PINK, CYAN, texturePaint,
YELLOW, LIGHT_GRAY, WHITE };
private List<ObjectData> objects = new ArrayList<ObjectData>(20);
private int numShapes, numStrings, numImages;
public FadeAnim() {
setBackground(BLACK);
setStrings(2);
setImages(3);
setShapes(8);
setControls(new Component[] { new DemoControls(this) });
setConstraints(new String[] { BorderLayout.EAST });
}
public void setImages(int num) {
if (num < numImages) {
List<ObjectData> images = new ArrayList<ObjectData>(objects.size());
for (ObjectData obj : objects) {
if (obj.object instanceof Image) {
images.add(obj);
}
}
objects.removeAll(images.subList(num, images.size()));
} else {
Dimension d = getSize();
for (int i = numImages; i < num; i++) {
Object obj = getImage(imgs[i % imgs.length]);
if (imgs[i % imgs.length].equals("jumptojavastrip.png")) {
int iw = ((Image) obj).getWidth(null);
int ih = ((Image) obj).getHeight(null);
BufferedImage bimage = new BufferedImage(iw, ih,
BufferedImage.TYPE_INT_RGB);
bimage.createGraphics().drawImage((Image) obj, 0, 0, null);
obj = bimage;
}
ObjectData od = new ObjectData(obj, BLACK);
od.reset(d.width, d.height);
objects.add(od);
}
}
numImages = num;
}
public void setStrings(int num) {
if (num < numStrings) {
List<ObjectData> textDatas = new ArrayList<ObjectData>(
objects.size());
//for (int i = 0; i < objects.size(); i++) {
for (ObjectData obj : objects) {
if (obj.object instanceof TextData) {
textDatas.add(obj);
}
}
objects.removeAll(textDatas.subList(num, textDatas.size()));
} else {
Dimension d = getSize();
for (int i = numStrings; i < num; i++) {
int j = i % fonts.length;
int k = i % strings.length;
Object obj = new TextData(strings[k], fonts[j], this);
ObjectData od = new ObjectData(obj, paints[i % paints.length]);
od.reset(d.width, d.height);
objects.add(od);
}
}
numStrings = num;
}
public void setShapes(int num) {
if (num < numShapes) {
List<ObjectData> shapes = new ArrayList<ObjectData>(objects.size());
//for (int i = 0; i < objects.size(); i++) {
for (ObjectData obj : objects) {
if (obj.object instanceof Shape) {
shapes.add(obj);
}
}
objects.removeAll(shapes.subList(num, shapes.size()));
} else {
Dimension d = getSize();
for (int i = numShapes; i < num; i++) {
Object obj = null;
switch (i % 7) {
case 0:
obj = new GeneralPath();
break;
case 1:
obj = new Rectangle2D.Double();
break;
case 2:
obj = new Ellipse2D.Double();
break;
case 3:
obj = new Arc2D.Double();
break;
case 4:
obj = new RoundRectangle2D.Double();
break;
case 5:
obj = new CubicCurve2D.Double();
break;
case 6:
obj = new QuadCurve2D.Double();
break;
}
ObjectData od = new ObjectData(obj, paints[i % paints.length]);
od.reset(d.width, d.height);
objects.add(od);
}
}
numShapes = num;
}
@Override
public void reset(int w, int h) {
for (int i = 0; i < objects.size(); i++) {
objects.get(i).reset(w, h);
}
}
@Override
public void step(int w, int h) {
for (int i = 0; i < objects.size(); i++) {
objects.get(i).step(w, h);
}
}
@Override
public void render(int w, int h, Graphics2D g2) {
for (int i = 0; i < objects.size(); i++) {
ObjectData od = objects.get(i);
AlphaComposite ac = AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, od.alpha);
g2.setComposite(ac);
g2.setPaint(od.paint);
g2.translate(od.x, od.y);
if (od.object instanceof Image) {
g2.drawImage((Image) od.object, 0, 0, this);
} else if (od.object instanceof TextData) {
g2.setFont(((TextData) od.object).font);
g2.drawString(((TextData) od.object).string, 0, 0);
} else if (od.object instanceof QuadCurve2D
|| od.object instanceof CubicCurve2D) {
g2.setStroke(bs);
g2.draw((Shape) od.object);
} else if (od.object instanceof Shape) {
g2.fill((Shape) od.object);
}
g2.translate(-od.x, -od.y);
}
}
public static void main(String[] argv) {
createDemoFrame(new FadeAnim());
}
static class TextData extends Object {
public String string;
public Font font;
public int width, height;
public TextData(String str, Font font, Component cmp) {
string = str;
this.font = font;
FontMetrics fm = cmp.getFontMetrics(font);
width = fm.stringWidth(str);
height = fm.getHeight();
}
}
static class ObjectData extends Object {
final int UP = 0;
final int DOWN = 1;
Object object;
BufferedImage bimg;
Paint paint;
double x, y;
float alpha;
int alphaDirection;
int imgX;
public ObjectData(Object object, Paint paint) {
this.object = object;
this.paint = paint;
if (object instanceof BufferedImage) {
bimg = (BufferedImage) object;
this.object = bimg.getSubimage(0, 0, 80, 80);
}
getRandomXY(300, 250);
alpha = (float) Math.random();
alphaDirection = Math.random() > 0.5 ? UP : DOWN;
}
private void getRandomXY(int w, int h) {
if (object instanceof TextData) {
x = Math.random() * (w - ((TextData) object).width);
y = Math.random() * h;
y = y < ((TextData) object).height ? ((TextData) object).height
: y;
} else if (object instanceof Image) {
x = Math.random() * (w - ((Image) object).getWidth(null));
y = Math.random() * (h - ((Image) object).getHeight(null));
} else if (object instanceof Shape) {
Rectangle bounds = ((Shape) object).getBounds();
x = Math.random() * (w - bounds.width);
y = Math.random() * (h - bounds.height);
}
}
public void reset(int w, int h) {
getRandomXY(w, h);
double ww = 20 + Math.random() * ((w == 0 ? 400 : w) / 4);
double hh = 20 + Math.random() * ((h == 0 ? 300 : h) / 4);
if (object instanceof Ellipse2D) {
((Ellipse2D) object).setFrame(0, 0, ww, hh);
} else if (object instanceof Rectangle2D) {
((Rectangle2D) object).setRect(0, 0, ww, ww);
} else if (object instanceof RoundRectangle2D) {
((RoundRectangle2D) object).setRoundRect(0, 0, hh, hh, 20, 20);
} else if (object instanceof Arc2D) {
((Arc2D) object).setArc(0, 0, hh, hh, 45, 270, Arc2D.PIE);
} else if (object instanceof QuadCurve2D) {
((QuadCurve2D) object).setCurve(0, 0, w * .2, h * .4, w * .4, 0);
} else if (object instanceof CubicCurve2D) {
((CubicCurve2D) object).setCurve(0, 0, 30, -60, 60, 60, 90, 0);
} else if (object instanceof GeneralPath) {
GeneralPath p = new GeneralPath();
float size = (float) ww;
p.moveTo(-size / 2.0f, -size / 8.0f);
p.lineTo(+size / 2.0f, -size / 8.0f);
p.lineTo(-size / 4.0f, +size / 2.0f);
p.lineTo(+0.0f, -size / 2.0f);
p.lineTo(+size / 4.0f, +size / 2.0f);
p.closePath();
object = p;
}
}
public void step(int w, int h) {
if (object instanceof BufferedImage) {
if ((imgX += 80) == 800) {
imgX = 0;
}
object = bimg.getSubimage(imgX, 0, 80, 80);
}
if (alphaDirection == UP) {
if ((alpha += 0.05) > .99) {
alphaDirection = DOWN;
alpha = 1.0f;
}
} else if (alphaDirection == DOWN) {
if ((alpha -= .05) < 0.01) {
alphaDirection = UP;
alpha = 0;
getRandomXY(w, h);
}
}
}
}
static class DemoControls extends CustomControls implements ChangeListener {
FadeAnim demo;
JSlider shapeSlider, stringSlider, imageSlider;
Font font = new Font(Font.SERIF, Font.BOLD, 10);
@SuppressWarnings("LeakingThisInConstructor")
public DemoControls(FadeAnim demo) {
super(demo.name);
this.demo = demo;
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
add(Box.createVerticalStrut(5));
JToolBar toolbar = new JToolBar(SwingConstants.VERTICAL);
toolbar.setFloatable(false);
shapeSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 20,
demo.numShapes);
shapeSlider.addChangeListener(this);
TitledBorder tb = new TitledBorder(new EtchedBorder());
tb.setTitleFont(font);
tb.setTitle(String.valueOf(demo.numShapes) + " Shapes");
shapeSlider.setBorder(tb);
shapeSlider.setPreferredSize(new Dimension(80, 45));
shapeSlider.setOpaque(true);
toolbar.addSeparator();
toolbar.add(shapeSlider);
toolbar.addSeparator();
stringSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 10,
demo.numStrings);
stringSlider.addChangeListener(this);
tb = new TitledBorder(new EtchedBorder());
tb.setTitleFont(font);
tb.setTitle(String.valueOf(demo.numStrings) + " Strings");
stringSlider.setBorder(tb);
stringSlider.setPreferredSize(new Dimension(80, 45));
stringSlider.setOpaque(true);
toolbar.add(stringSlider);
toolbar.addSeparator();
imageSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 10,
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