в 17:44, 31 мая 2010

2010-05-31T17:44:26Z

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2010-05-31T15:25:32Z

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== Demonstrate XOR mode. ==



<source lang="java">
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import javax.swing.JFrame;
public class XORModePaintWithMouse extends JFrame {
int chsX = 100, chsY = 100;
public static void main(String[] a) {
XORModePaintWithMouse f = new XORModePaintWithMouse();
f.setSize(300, 300);
f.setVisible(true);
}
XORModePaintWithMouse() {
addMouseMotionListener(new MouseMotionAdapter() {
public void mouseMoved(MouseEvent me) {
int x = me.getX();
int y = me.getY();
chsX = x - 10;
chsY = y - 10;
repaint();
}
});
}
public void paint(Graphics g) {
g.drawLine(0, 0, 100, 100);
g.drawLine(0, 100, 100, 0);
g.setColor(Color.blue);
g.drawLine(40, 25, 250, 180);
g.drawLine(75, 90, 400, 400);
g.setColor(Color.green);

// xor cross hairs
g.setXORMode(Color.black);
g.drawLine(chsX - 10, chsY, chsX + 10, chsY);
g.drawLine(chsX, chsY - 10, chsX, chsY + 10);
g.setPaintMode();
}
}</source>



== Draw 2D shape ==



<source lang="java">
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JFrame;
public class Draw2DObjects extends JFrame {
Shape shapes[] = new Shape[5];
public static void main(String args[]) {
Draw2DObjects app = new Draw2DObjects();
}
public Draw2DObjects() {
add("Center", new MyCanvas());
shapes[0] = new Line2D.Double(0.0, 0.0, 100.0, 100.0);
shapes[1] = new Rectangle2D.Double(10.0, 100.0, 200.0, 200.0);
shapes[2] = new Ellipse2D.Double(20.0, 200.0, 100.0, 100.0);
GeneralPath path = new GeneralPath(new Line2D.Double(300.0, 100.0, 400.0, 150.0));
path.append(new Line2D.Double(25.0, 175.0, 300.0, 100.0), true);
shapes[3] = path;
shapes[4] = new RoundRectangle2D.Double(350.0, 250, 200.0, 100.0, 50.0, 25.0);
setSize(400, 400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
class MyCanvas extends Canvas {
public void paint(Graphics graphics) {
Graphics2D g = (Graphics2D) graphics;
for (int i = 0; i < shapes.length; ++i) {
if (shapes[i] != null)
g.draw(shapes[i]);
}
}
}
}</source>



== Draw Arcs ==



<source lang="java">
import java.awt.Graphics;
import javax.swing.JFrame;
public class MainClass extends JFrame {
public static void main(String[] a){
MainClass f = new MainClass();
f.setSize(300,300);
f.setVisible(true);
}

public void paint(Graphics g) {
g.drawArc(10, 40, 70, 70, 0, 75);
g.fillArc(100, 40, 70, 70, 0, 75);
g.drawArc(10, 100, 70, 80, 0, 175);
g.fillArc(100, 100, 70, 90, 0, 270);
g.drawArc(200, 80, 80, 80, 0, 180);
}
}</source>



== Draw Ellipses ==



<source lang="java">
import java.applet.Applet;
import java.awt.Graphics;
public class MainClass extends Applet {
public void paint(Graphics g) {
g.drawOval(10, 10, 50, 50);
g.fillOval(100, 10, 75, 50);
g.drawOval(190, 10, 90, 30);
g.fillOval(70, 90, 140, 100);
}
}</source>



== Draw rectangles ==



<source lang="java">
import java.awt.Graphics;
import javax.swing.JFrame;
public class MainClass extends JFrame {
public static void main(String[] a){
MainClass f = new MainClass();
f.setSize(300,300);
f.setVisible(true);
}

public void paint(Graphics g) {
g.drawRect(10, 10, 60, 50);
g.fillRect(100, 10, 60, 50);
g.drawRoundRect(190, 10, 60, 50, 15, 15);
g.fillRoundRect(70, 90, 140, 100, 30, 40);
}
}</source>



== Fill a solid three-dimensional rectangle ==



<source lang="java">
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JPanel {
public static void main(String[] a) {
JFrame f = new JFrame();
f.setSize(400, 400);
f.add(new MainClass());
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
public void paint(Graphics g) {
g.setColor (Color.yellow);
g.fill3DRect (5, 15, 50, 75, true);
}
}</source>



== Resizing output to fit the current size of a window. ==



<source lang="java">
import java.applet.Applet;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class MainClass extends Applet {
final int inc = 25;
int max = 500;
int min = 200;
Dimension d;
public MainClass() {
addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent me) {
int w = (d.width + inc) > max ? min : (d.width + inc);
int h = (d.height + inc) > max ? min : (d.height + inc);
setSize(new Dimension(w, h));
}
});
}
public void paint(Graphics g) {
d = getSize();
g.drawLine(0, 0, d.width - 1, d.height - 1);
g.drawLine(0, d.height - 1, d.width - 1, 0);
g.drawRect(0, 0, d.width - 1, d.height - 1);
}
}</source>

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в 17:44, 31 мая 2010

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