viewer.java

WAP ide 代码

package wbmp;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;


/**
 * Viewer for WBMP files.  Constructs a dialog frame with a close button
 *  and a label control for displaying the image file.
 * Copyright (c) 2003
 * @author Mark Busman
 * @version 1.0
 *
 * For License and contact information see WBMPEditor.java
 */

public class Viewer extends JDialog {
  JLabel Drawinglabel = new JLabel();
  JButton Closebutton = new JButton();

  // Variables
  static int labelSize = 1;
  static Color bkg = new Color(0, 166, 8);

  /** Default Constructor */
  public Viewer() {

  }

  /** Constructor - used when running in stand-alone mode.
  @param String fileName
  */
  public Viewer(String fName) {
    try {
      jbInit();
      GenerateImage(fName);
      pack();
      this.setSize(100, 100);
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /** Constructor - used when called from the WBMP Editor program.
  @param int Width
  @param int Height
  @param int[][] ColorMatrix
  */
  public Viewer(int w, int h, int[][] matrix) {
    try {
      jbInit();
      CreateDrawing(w, h, matrix);
      pack();
      this.setTitle("WBMP Preview");
      this.setSize(100, 100);
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /** Initilaization of the form's components. */
  private void jbInit() throws Exception {
    Closebutton.setText("Close");
    Closebutton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        Closebutton_actionPerformed(e);
      }
    });
    this.getContentPane().setBackground(new Color(0, 166, 8));
    this.getContentPane().add(Drawinglabel, BorderLayout.CENTER);
    this.getContentPane().add(Closebutton, BorderLayout.SOUTH);
  }

  /** Used to call up the decoder when running in stand alone mode.
  @param String fileName
  */
  private void GenerateImage(String fileName) {
    Decoder decoder = new Decoder(fileName);
    if (decoder.getStatus()){
      String fName = fileName.substring(new File(fileName).getParent().toString().length() + 1);
      this.setTitle("WBMP Viewer - " + fName);
      CreateDrawing(decoder.getWidth(), decoder.getHeight(), decoder.getMatrix());
    }
  }

  /** Main function - takes as argumets a file name.
  @param String[] commandline arguments
  */
  public static void main(String args[]) {
    Viewer v = new Viewer(args[0]);
    v.show();
  }

  /** Performs the actual drawing on the label.
  @param int Width
  @param int Height
  @param int[][] ColorMatrix
  */
  private void CreateDrawing(int w, int h, int[][] matrix) {

    // clear the drawing and the previous controls
    Drawinglabel.removeAll();
    Drawinglabel.repaint();

    Drawinglabel.setSize(w * labelSize, h * labelSize);
    // define the new matrix and initialize it to background color
    int ColorMatrix[][] = new int[w][h];
    for (int c = 0; c < w; c++)
      for (int r = 0; r < h; r++)
        ColorMatrix[c][r] = matrix[c][r];

    // create the new labels
    JLabel l;
    for (int x = 0; x < w; x++) {
      for (int y = 0; y < h; y++) {
        l = new JLabel();
        if (ColorMatrix[x][y] == 1)
          l.setBackground(bkg);
        else
          l.setBackground(Color.black);
        l.setOpaque(true);
        l.setSize(labelSize, labelSize);
        l.setLocation(x * labelSize, y * labelSize);
        Drawinglabel.add(l);
      }
    }
    Drawinglabel.repaint();
  }

  /** Returns a label object with the drawing content
   *  @param String fileName
   *  @returns JLabel - a label with content
  */
  public JLabel getDrawing(String fName) {
    GenerateImage(fName);
    return Drawinglabel;
  }

  /** Performs the closing of the dialog window.
  @param ActionEvent e
  */
  void Closebutton_actionPerformed(ActionEvent e) {
    setVisible(false);
    dispose();
  }
}