Java by API/java.awt/Graphics2D

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Graphics2D: drawGlyphVector(GlyphVector g, float x, float y)

   <source lang="java">

import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.font.FontRenderContext; import java.awt.font.GlyphVector; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
       RenderingHints.VALUE_ANTIALIAS_ON);
   
   String s = "www.jexp.ru";
   Font font = new Font("Serif", Font.PLAIN, 24);
   FontRenderContext frc = g2.getFontRenderContext();
   GlyphVector gv = font.createGlyphVector(frc, s);
   g2.drawGlyphVector(gv, 40, 60);
 }

} 

      </source>



Graphics2D: draw(Shape s)

   <source lang="java">

import java.awt.Color; import java.awt.Container; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Shape; import java.awt.geom.GeneralPath; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 Shape shape;
 public MyCanvas() {
   shape = create();
 }
 protected Shape create() {
   GeneralPath path = new GeneralPath();
   path.moveTo(50, 30);
   path.lineTo(30, 200);
   return path;
 }

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D) g;
   g2.setPaint(Color.black);
   g2.draw(shape);
 }

} 


      </source>



Graphics2D: drawString(String str, int x, int y)

   <source lang="java">

import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
       RenderingHints.VALUE_ANTIALIAS_ON);
   Font font = new Font("Serif", Font.PLAIN, 96);
   g2.setFont(font);
   g2.drawString("jade", 40, 120); 
 }

} 

      </source>



Graphics2D: drawString(String str, int x, int y) (Unicode)

   <source lang="java">

import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
       RenderingHints.VALUE_ANTIALIAS_ON);
   Font font = new Font("Serif", Font.PLAIN, 96);
   g2.setFont(font);
   g2.drawString("Please \u062e\u0644\u0639 slowly.", 40, 80);
 }

} 

      </source>



Graphics2D: fill(Shape s)

   <source lang="java">

import java.awt.Container; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Shape; import java.awt.geom.AffineTransform; import java.awt.geom.Rectangle2D; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Shape shape = new Rectangle2D.Float(100, 50, 80, 80);
   
   Graphics2D g2 = (Graphics2D) g;
   
   g2.fill(shape);
 }

} 

      </source>



Graphics2D: getFontRenderContext()

   <source lang="java">

import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.font.FontRenderContext; import java.awt.font.LineBreakMeasurer; import java.awt.font.TextAttribute; import java.awt.font.TextLayout; import java.text.AttributedString; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.swing.JComponent; import javax.swing.JFrame;

public class MainClass { 

 public static void main(String[] a) throws Exception {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   TextFormat tl = new TextFormat();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class TextFormat extends JComponent { 

  List layouts;
  Font font = new Font("SansSerif", Font.BOLD, 42);
  String text = "The quick brown fox jumped over the lazy cow";
 public void paint(Graphics g) {
   if (layouts == null)
     getLayouts(g);
   Point pen = new Point(0, 0);
   Graphics2D g2d = (Graphics2D)g;
   g2d.setColor(java.awt.Color.black); // or a property
   g2d.setFont(font);
   Iterator it = layouts.iterator();
   while (it.hasNext()) {
     TextLayout layout = (TextLayout) it.next();
     pen.y += (layout.getAscent());
     g2d.setFont(font);
     layout.draw(g2d, pen.x, pen.y);
     pen.y += layout.getDescent();
   }
 }
 private void getLayouts(Graphics g) {
   layouts = new ArrayList();
   Graphics2D g2d = (Graphics2D) g;
   FontRenderContext frc = g2d.getFontRenderContext();
   AttributedString attrStr = new AttributedString(text);
   attrStr.addAttribute(TextAttribute.FONT, font, 0, text.length());   
   LineBreakMeasurer measurer = new LineBreakMeasurer(
     attrStr.getIterator(), frc);
   float wrappingWidth;
   wrappingWidth = getSize().width - 15;
   while (measurer.getPosition() < text.length()) {
     TextLayout layout = measurer.nextLayout(wrappingWidth);
     layouts.add(layout);
   }
 }

} 

      </source>



Graphics2D: rotate(double theta)

   <source lang="java">

import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { 

 public void paint(Graphics g) {
   g.fillRect(0, 0, 20, 20);
   Graphics2D g2 = (Graphics2D) g;
   g2.translate(50, 50);
   g2.rotate(30.0 * Math.PI / 180.0);
   g2.scale(2.0, 2.0);
   g.setColor(Color.red);
   g.fillRect(0, 0, 20, 20);
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame();
   frame.getContentPane().add(new MainClass());
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(200, 200);
   frame.setVisible(true);
 }

} 

      </source>



Graphics2D: scale(double sx, double sy)

   <source lang="java">

import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { 

 public void paint(Graphics g) {
   g.fillRect(0, 0, 20, 20);
   Graphics2D g2 = (Graphics2D) g;
   g2.translate(50, 50);
   g2.rotate(30.0 * Math.PI / 180.0);
   g2.scale(2.0, 2.0);
   g.setColor(Color.red);
   g.fillRect(0, 0, 20, 20);
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame();
   frame.getContentPane().add(new MainClass());
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(200, 200);
   frame.setVisible(true);
 }

} 

      </source>



Graphics2D: setComposite(Composite comp)

   <source lang="java">

import java.awt.AlphaComposite; import java.awt.Color; import java.awt.ruposite; import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.geom.Rectangle2D; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass { 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
       RenderingHints.VALUE_ANTIALIAS_ON);
   Rectangle2D r = new Rectangle2D.Double(50, 50, 150, 100);
   g2.setPaint(Color.red);
   g2.fill(r);
   Composite c = AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
      .4f);
   g2.setComposite(c);

   g2.setPaint(Color.blue);
   g2.setFont(new Font("Times New Roman", Font.PLAIN, 72));
   g2.drawString("www.jexp.ru", 25, 130);
 }

} 


      </source>



Graphics2D: setPaint(Paint paint)

   <source lang="java">

import java.awt.Color; import java.awt.Container; import java.awt.GradientPaint; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   Ellipse2D e = new Ellipse2D.Float(40, 40, 120, 120);
   GradientPaint gp = new GradientPaint(75, 75, Color.white,
       95, 95, Color.gray, true);
   g2.setPaint(gp);
   g2.fill(e);
 }

} 

      </source>



Graphics2D: setRenderingHint(Key hintKey, Object hintValue)

   <source lang="java">

import java.awt.Container; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D)g;
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
       RenderingHints.VALUE_ANTIALIAS_ON);
   Font font = new Font("Serif", Font.PLAIN, 96);
   g2.setFont(font);
   g2.drawString("jade", 40, 120); 
 }

} 

      </source>



Graphics2D: setRenderingHints(Map hints)

   <source lang="java">

import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { 

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D) g;
   Font f = new Font ("Arial", Font.PLAIN, 48);
   g2.setFont (f);
   g2.drawString ("www.jexp.ru", 10, 60);
   RenderingHints rh = g2.getRenderingHints ();
   rh.put (RenderingHints.KEY_ANTIALIASING,
           RenderingHints.VALUE_ANTIALIAS_ON);
   g2.setRenderingHints (rh);
   g2.drawString ("Antialiased text", 10, 120);
 
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame();
   frame.getContentPane().add(new MainClass());
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(200,200);
   frame.setVisible(true);
 }

} 

      </source>



Graphics2D: setStroke(Stroke s)

   <source lang="java">

import java.awt.BasicStroke; import java.awt.Color; import java.awt.Container; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Shape; import java.awt.Stroke; import java.awt.geom.Rectangle2D; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 Shape shape;
 public MyCanvas() {
   shape = create();
 }
 protected Shape create() {
   float cm = 72 / 2.54f;
   return new Rectangle2D.Float(cm, cm, 2 * cm, cm);
 }

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D) g;
   Stroke stroke = new BasicStroke(1, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 0,
       new float[] { 3, 1 }, 0);
   g2.setStroke(stroke);
   
   g2.setPaint(Color.black);
   g2.draw(shape);
   
 }

} 

      </source>



Graphics2D: transform(AffineTransform Tx)

   <source lang="java">

import java.awt.Color; import java.awt.Container; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.geom.AffineTransform; import java.awt.geom.Rectangle2D; import javax.swing.JComponent; import javax.swing.JFrame; public class MainClass{ 

 public static void main(String[] args) {
   JFrame jf = new JFrame("Demo");
   Container cp = jf.getContentPane();
   MyCanvas tl = new MyCanvas();
   cp.add(tl);
   jf.setSize(300, 200);
   jf.setVisible(true);
 }

} class MyCanvas extends JComponent { 

 Shape shape;
 public MyCanvas() {
   shape = create();
 }
 protected Shape create() {
   float cm = 72 / 2.54f;
   return new Rectangle2D.Float(cm, cm, 2 * cm, cm);
 }

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D) g;
   g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
   
   g2.setPaint(Color.black);
   g2.draw(shape);
   
   AffineTransform at = AffineTransform.getTranslateInstance(75, 75);
   g2.transform(at);
   g2.setPaint(Color.red);
   g2.draw(shape);
   
 }

} 

      </source>



Graphics2D: translate(int x, int y)

   <source lang="java">

import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel { 

 public void paint(Graphics g) {
   g.fillRect(0, 0, 20, 20);
   Graphics2D g2 = (Graphics2D) g;
   g2.translate(50, 50);
   g2.rotate(30.0 * Math.PI / 180.0);
   g2.scale(2.0, 2.0);
   g.setColor(Color.red);
   g.fillRect(0, 0, 20, 20);
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame();
   frame.getContentPane().add(new MainClass());
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(200, 200);
   frame.setVisible(true);
 }

} 

      </source>
Источник — «http://jexp.ru/index.php?title=Java_by_API/java.awt/Graphics2D&oldid=1158»