menucolor.java

java文本编辑器

import java.awt.*; 
import java.awt.event.*; 

import javax.swing.*; 

public class MenuColor extends JDialog 
implements ItemListener, 
ActionListener, 
TextListener, 
AdjustmentListener { 

CheckboxGroup gp; 
Checkbox fore, back; 
Scrollbar scrollbarRed, scrollbarGreen, scrollbarBlue; 
TextField textFieldRed, textFieldGreen, textFieldBlue; 
Button colorButtonOk, colorButtonCancel; 
Checkbox colorCheckbox; 
TextField colorTextField; 
boolean changed = true; 
boolean synchronism = false; 
Color[] fbgc = new Color[2]; 
Color[] fbgcOld = new Color[2]; 
boolean isFore = true; 

MenuColor(Frame frame, boolean modal) { 
super(frame, modal); 
} 

public Color[] myLayout(Color fgc, Color bgc) { 
fbgc[0] = fgc; 
fbgc[1] = bgc; 
fbgcOld[0] = fgc; 
fbgcOld[1] = bgc; 
this.getContentPane().setLayout(new GridBagLayout()); 
GridBagConstraints gbc = new GridBagConstraints(); 
gbc.gridwidth = 1; 
gbc.gridheight =1; 
gbc.weightx = 1; 
gbc.weighty = 1; 
gbc.fill = gbc.HORIZONTAL; 
gbc.anchor = gbc.CENTER; 

//CheckboxGroup for fore and back ground 
gp = new CheckboxGroup(); 
fore = new Checkbox("Foreground", true, gp); 
back = new Checkbox("Background", false, gp); 
gbc.gridx = 1; 
gbc.gridy = 0; 
getContentPane().add(fore, gbc); 
gbc.gridx = 3; 
gbc.gridy = 0; 
getContentPane().add(back, gbc); 
fore.addItemListener(this); 
back.addItemListener(this); 

// 3 groups of Label + ScrollBar + TextField 
Label labelRed = new Label("Red"); 
gbc.gridx = 0; 
gbc.gridy = 1; 
getContentPane().add(labelRed, gbc); 
scrollbarRed = new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 0, 256); 
scrollbarRed.setValue(fgc.getRed()); 
gbc.gridx = 1; 
gbc.gridy = 1; 
getContentPane().add(scrollbarRed, gbc); 
scrollbarRed.addAdjustmentListener(this); 
textFieldRed = new TextField(3); 
textFieldRed.setText(scrollbarRed.getValue() + ""); 
textFieldRed.addTextListener(this); 
//textFieldRed.setEditable(false); 
gbc.gridx = 2; 
gbc.gridy = 1; 
getContentPane().add(textFieldRed, gbc); 

Label labelGreen = new Label("Green"); 
gbc.gridx = 0; 
gbc.gridy = 2; 
getContentPane().add(labelGreen, gbc); 
scrollbarGreen = new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 0, 256); 
scrollbarGreen.setValue(fgc.getGreen()); 
gbc.gridx = 1; 
gbc.gridy = 2; 
getContentPane().add(scrollbarGreen, gbc); 
scrollbarGreen.addAdjustmentListener(this); 
textFieldGreen = new TextField(3); 
textFieldGreen.setText(scrollbarGreen.getValue() + ""); 
//textFieldGreen.addTextListener(this); 
textFieldGreen.setEditable(false); 
gbc.gridx = 2; 
gbc.gridy = 2; 
getContentPane().add(textFieldGreen, gbc); 

Label labelBlue = new Label("Blue"); 
gbc.gridx = 0; 
gbc.gridy = 3; 
getContentPane().add(labelBlue, gbc); 
scrollbarBlue = new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 0, 256); 
scrollbarBlue.setValue(fgc.getBlue()); 
gbc.gridx = 1; 
gbc.gridy = 3; 
getContentPane().add(scrollbarBlue, gbc); 
scrollbarBlue.addAdjustmentListener(this); 
textFieldBlue = new TextField(3); 
textFieldBlue.setText(scrollbarBlue.getValue() + ""); 
//textFieldBlue.addTextListener(this); 
textFieldBlue.setEditable(false); 
gbc.gridx = 2; 
gbc.gridy = 3; 
getContentPane().add(textFieldBlue, gbc); 

//2 Buttons: Ok and Cancel 
colorButtonOk = new Button("Ok"); 
gbc.gridx = 4; 
gbc.gridy = 1; 
gbc.fill = gbc.NONE; 
getContentPane().add(colorButtonOk,gbc); 
colorButtonOk.addActionListener(this); 

colorButtonCancel = new Button("Cancel"); 
gbc.gridx = 4; 
gbc.gridy = 2; 
getContentPane().add(colorButtonCancel,gbc); 
colorButtonCancel.addActionListener(this); 

//a Checkbox for locking RGB Scrollbar to synchronize 
colorCheckbox = new Checkbox("Lock RGB", false); 
gbc.gridx = 3; 
gbc.gridy = 3; 
getContentPane().add(colorCheckbox,gbc); 
colorCheckbox.addItemListener(this); 

//a TextField for demo the color 
colorTextField = new TextField("Java awt"); 
//have to disable this because of 70% decrease in color when setEditable(false) 
//and color can′t be corrected by increasing 1/(70%) since >255 
//colorTextField.setEditable(false); 
colorTextField.setSize(90, 60); 
colorTextField.setForeground(fgc); 
colorTextField.setBackground(bgc); 
colorTextField.setFont(new Font("Courier", Font.BOLD + Font.ITALIC, 36)); 
gbc.gridx = 3; 
gbc.gridy = 1; 
gbc.fill = gbc.BOTH; 
getContentPane().add(colorTextField, gbc); 

this.addWindowListener(new WindowAdapter() { 
public void windowClosing(WindowEvent e) { 
dispose(); 
} 
}); 
this.setLocation(120, 120); 
this.setResizable(false); 
this.setSize(480,160); 
this.setVisible(true); 
if(changed) { 
return fbgc; 
} 
else 
return fbgcOld; 
}//end of myLayout 

//ActionListener 
public void actionPerformed(ActionEvent ae) { 
if(ae.getSource() == colorButtonOk) { 
changed = true; 
dispose(); 
} 
else if(ae.getSource() == colorButtonCancel) { 
changed = false; 
dispose(); 
} 
}//end of ActionListener 

//ItemListener 
public void itemStateChanged(ItemEvent ie) { 
if(ie.getSource() == fore) { 
isFore = true; 
scrollbarRed.setValue(fbgc[0].getRed()); 
textFieldRed.setText(scrollbarRed.getValue() + ""); 
scrollbarGreen.setValue(fbgc[0].getGreen()); 
textFieldGreen.setText(scrollbarGreen.getValue() + ""); 
scrollbarBlue.setValue(fbgc[0].getBlue()); 
textFieldBlue.setText(scrollbarBlue.getValue() + ""); 
colorTextField.setForeground(setColorVarSrollbar()); 
} 
else if(ie.getSource() == back) { 
isFore = false; 
scrollbarRed.setValue(fbgc[1].getRed()); 
textFieldRed.setText(scrollbarRed.getValue() + ""); 
scrollbarGreen.setValue(fbgc[1].getGreen()); 
textFieldGreen.setText(scrollbarGreen.getValue() + ""); 
scrollbarBlue.setValue(fbgc[1].getBlue()); 
textFieldBlue.setText(scrollbarBlue.getValue() + ""); 
colorTextField.setBackground(setColorVarSrollbar()); 
} 
else if(ie.getSource() == colorCheckbox) { 
if(colorCheckbox.getState()) { 
synchronism = true; 
} 
else { 
synchronism = false; 
} 
} 
}//end of ItemListener 

//AdjustmentListener 
public void adjustmentValueChanged(AdjustmentEvent ade) { 
if(ade.getSource() == scrollbarRed) { 
if(synchronism) { 
textFieldRed.setText(scrollbarRed.getValue() + ""); 
scrollbarGreen.setValue(scrollbarRed.getValue()); 
textFieldGreen.setText(scrollbarRed.getValue() + ""); 
scrollbarBlue.setValue(scrollbarRed.getValue()); 
textFieldBlue.setText(scrollbarRed.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
else { 
textFieldRed.setText(scrollbarRed.getValue()+""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
} 
else if(ade.getSource() == scrollbarGreen) { 
if(synchronism) { 
textFieldGreen.setText(scrollbarGreen.getValue() + ""); 
scrollbarBlue.setValue(scrollbarGreen.getValue()); 
textFieldBlue.setText(scrollbarGreen.getValue() + ""); 
scrollbarRed.setValue(scrollbarGreen.getValue()); 
textFieldRed.setText(scrollbarGreen.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
else { 
textFieldGreen.setText(scrollbarGreen.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
} 
else if(ade.getSource() == scrollbarBlue) { 
if(synchronism) { 
textFieldBlue.setText(scrollbarBlue.getValue() + ""); 
scrollbarRed.setValue(scrollbarBlue.getValue()); 
textFieldRed.setText(scrollbarBlue.getValue() + ""); 
scrollbarGreen.setValue(scrollbarBlue.getValue()); 
textFieldGreen.setText(scrollbarBlue.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
else { 
textFieldBlue.setText(scrollbarBlue.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
} 
}//end of AdjustmentListener 

//TextListener 
public void textValueChanged(TextEvent te) { 
if(te.getSource() == textFieldRed) { 
int i = 0; 
try { 
i = Integer.parseInt(textFieldRed.getText()); 
} catch(NumberFormatException nfe) { 
} 
if(i < 0) 
i = 0; 
if(i > 255) 
i = 255; 
scrollbarRed.setValue(i); 
if(synchronism) { 
scrollbarGreen.setValue(scrollbarRed.getValue()); 
textFieldGreen.setText(scrollbarRed.getValue() + ""); 
scrollbarBlue.setValue(scrollbarRed.getValue()); 
textFieldBlue.setText(scrollbarRed.getValue() + ""); 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 
else { 
if(isFore) { 
colorTextField.setForeground(setColorVarSrollbar()); 
fbgc[0] = setColorVarSrollbar(); 
} 
else { 
colorTextField.setBackground(setColorVarSrollbar()); 
fbgc[1] = setColorVarSrollbar(); 
} 
} 

} 
//else if(te.getSource() == textFieldGreen) { 
//} conflict with textFieldRed 
//else if(te.getSource() == textFieldBlue) { 
//} 
}//end of TextListener 

private Color setColorVarSrollbar() { 
return new Color(scrollbarRed.getValue(), 
scrollbarGreen.getValue(), 
scrollbarBlue.getValue()); 
} 

}//end of class MenuColor