asciifileoutframe.java

ASCII图画分类： 图像处理 可以将鼠标画的图象转成ASCII的形式

//AsciiFileOutFrame.java
//
//hard-coded for exclusive use by AsciiDraw.  Very non-oo.
//I'll let you make this entire app make use of generalized library components
package joeh.asciidraw;
import java.awt.*;

public class AsciiFileOutFrame extends Frame {
   AsciiDrawPanel adp;
   String sampleName = "output.txt";
   	String mssgSTR = "Enter the filename:";
    Label mssgLabel;
    TextField fileNameField;
   Checkbox genCode;

 public AsciiFileOutFrame(int xw, int yh, AsciiDrawPanel p)  {
  super("Output file name");
  this.resize(xw, yh);
  
  adp = p;
  this.setLayout(new BorderLayout(20,20));
  
  mssgLabel = new Label(mssgSTR);
  fileNameField = new TextField(sampleName);
  fileNameField.setEditable(true);
    
  Panel buttonPanel = new Panel();
  buttonPanel.setLayout(new FlowLayout());
  buttonPanel.add(new Button("cancel"));
  buttonPanel.add(new Button("Save!"));
  genCode = new Checkbox("Also attach Java code for the image");
  buttonPanel.add(genCode);
  
  this.add("North", mssgLabel);  
  this.add("Center", fileNameField);
  this.add("South", buttonPanel);

    
  fileNameField.selectAll();
  fileNameField.requestFocus(); //start being able to type into TextField
  
}

public boolean handleEvent(Event evt) {
    switch(evt.id) {
                case Event.WINDOW_DESTROY:   //they close the window!
             	{
              	   dispose();
             	   return true;
             	}
               case Event.ACTION_EVENT:
                 {
                        if (evt.target instanceof Button)
                            if ("Save!".equals(evt.arg))     
                             {  
                                adp.setDestFile(fileNameField.getText());
                                
				if (genCode.getState())
				  adp.doSave(true, 2);
				else
				  adp.doSave(true, 1);
                                dispose();
                                return true;
                             }
                           if ("cancel".equals(evt.arg))     
                             {  
              	                dispose();
             	                return true;
                             }
		      }
             }
            return false;
    }
           
}