Draw canvas with color and text

   

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;

import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JFrame;

public class MyCanvas extends JComponent {
  private static Color m_tRed = new Color(255, 0, 0, 150);

  private static Color m_tGreen = new Color(0, 255, 0, 150);

  private static Color m_tBlue = new Color(0, 0, 255, 150);

  private static Font monoFont = new Font("Monospaced", Font.BOLD
      | Font.ITALIC, 36);

  private static Font sanSerifFont = new Font("SanSerif", Font.PLAIN, 12);

  private static Font serifFont = new Font("Serif", Font.BOLD, 24);

  private static ImageIcon java2sLogo = new ImageIcon("java2s.gif");

  public void paintComponent(Graphics g) {
    super.paintComponent(g);

    // draw entire component white
    g.setColor(Color.white);
    g.fillRect(0, 0, getWidth(), getHeight());

    // yellow circle
    g.setColor(Color.yellow);
    g.fillOval(0, 0, 240, 240);

    // magenta circle
    g.setColor(Color.magenta);
    g.fillOval(160, 160, 240, 240);

    // paint the icon below blue sqaure
    int w = java2sLogo.getIconWidth();
    int h = java2sLogo.getIconHeight();
    java2sLogo.paintIcon(this, g, 280 - (w / 2), 120 - (h / 2));

    // paint the icon below red sqaure
    java2sLogo.paintIcon(this, g, 120 - (w / 2), 280 - (h / 2));

    // transparent red square
    g.setColor(m_tRed);
    g.fillRect(60, 220, 120, 120);

    // transparent green circle
    g.setColor(m_tGreen);
    g.fillOval(140, 140, 120, 120);

    // transparent blue square
    g.setColor(m_tBlue);
    g.fillRect(220, 60, 120, 120);

    g.setColor(Color.black);

    g.setFont(monoFont);
    FontMetrics fm = g.getFontMetrics();
    w = fm.stringWidth("Java Source");
    h = fm.getAscent();
    g.drawString("Java Source", 120 - (w / 2), 120 + (h / 4));

    g.setFont(sanSerifFont);
    fm = g.getFontMetrics();
    w = fm.stringWidth("and");
    h = fm.getAscent();
    g.drawString("and", 200 - (w / 2), 200 + (h / 4));

    g.setFont(serifFont);
    fm = g.getFontMetrics();
    w = fm.stringWidth("Support.");
    h = fm.getAscent();
    g.drawString("Support.", 280 - (w / 2), 280 + (h / 4));
  }

  public Dimension getPreferredSize() {
    return new Dimension(400, 400);
  }

  public Dimension getMinimumSize() {
    return getPreferredSize();
  }
  public static void main(String args[]) {
    JFrame mainFrame = new JFrame("Graphics demo");
    mainFrame.getContentPane().add(new MyCanvas());
    mainFrame.pack();
    mainFrame.setVisible(true);
  }
}

1.	Draw string
2.	Anti Alias
3.	Paints
4.	Program to draw grids
5.	Plot
6.	Picture Scaler
7.	Radial Gradient
8.	Rotation About Center
9.	Safe Repaint
10.	Scale Test
11.	Scaling Methods
12.	Simple Attributes of painting
13.	Two Stops Gradient
14.	Bad vs. Good Primitive Rendering
15.	Static methods for some common painting functions
16.	Set Text Anti Aliasing
17.	Graphics Util: draw shapes and text
18.	Utilties for painting visual effects
19.	Your own Graphics2D
20.	Reads a Paint object that has been serialised
21.	A panel that displays a paint sample.

Draw canvas with color and text : Paint « 2D Graphics GUI « Java

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