codice:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.colorchooser.AbstractColorChooserPanel;
import javax.swing.event.*;
import javax.swing.JSpinner.NumberEditor;
import javax.swing.text.*;
public class ColorChooserDemo extends JFrame
{
private JColorChooser colorChooser;
private BottomPanel bottomPanel;
public ColorChooserDemo()
{
super("Color Chooser Demo");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setResizable(false);
Container pane=getContentPane();
pane.setBackground(Color.WHITE);
/** Creating a custom JColorChooser in a try-catch block, if something goes wrong a standard one will be created */
try
{
Color defaultColor=new Color(114,226,226);
colorChooser=new JColorChooser(defaultColor);
AbstractColorChooserPanel panelHSV=null;
AbstractColorChooserPanel[] oldPanels=colorChooser.getChooserPanels(),newPanels=new AbstractColorChooserPanel[1];
for(int i=0;i<oldPanels.length;i++)
{
AbstractColorChooserPanel oldPanel=oldPanels[i];
if(oldPanel.getDisplayName().equals("HSV"))panelHSV=newPanels[0]=oldPanel;
}
colorChooser.setChooserPanels(newPanels);
((JComponent)((JComponent)panelHSV.getParent()).getParent()).setBackground(Color.WHITE);
panelHSV.setBackground(Color.WHITE);
// Removing ColorPanel component from ColorChooserPanel, only diagrams will be visible
Component[] internalComponents=panelHSV.getComponents();
for(int i=0;i<internalComponents.length;i++)
{
Component c=internalComponents[i];
if(c.getClass().getName().equals("javax.swing.colorchooser.ColorPanel"))
{
Container colorPanel=(Container)c;
for(int j=0;j<colorPanel.getComponentCount();j++)
{
Component child=colorPanel.getComponent(j);
// Setting the third JRadioButton selected (the "Value" one)
if(child instanceof JRadioButton)
{
((JRadioButton)colorPanel.getComponent(j+2)).doClick();
break;
}
}
colorPanel.setVisible(false);
}
}
// Setting diagrams borders and listeners
DiagramListener listener=new DiagramListener();
JComponent firstDiagram=(JComponent)internalComponents[internalComponents.length-2],secondDiagram=(JComponent)internalComponents[internalComponents.length-1];
firstDiagram.addMouseListener(listener);
firstDiagram.addMouseMotionListener(listener);
secondDiagram.addMouseListener(listener);
secondDiagram.addMouseMotionListener(listener);
firstDiagram.setBorder(new CompoundBorder(new EmptyBorder(0,4,0,4),new LineBorder(Color.GRAY)));
secondDiagram.setBorder(new LineBorder(Color.GRAY));
// removing previous preview panel and adding a new one
colorChooser.setPreviewPanel(new JPanel());
pane.add(bottomPanel=new BottomPanel(defaultColor),BorderLayout.SOUTH);
}
catch(Exception ex){
colorChooser=new JColorChooser();
}
pane.add(colorChooser,BorderLayout.NORTH);
pack();
setLocationRelativeTo(null);
}
private class DiagramListener implements MouseListener,MouseMotionListener
{
public void mouseDragged(MouseEvent e){
bottomPanel.setLabelValues();
bottomPanel.getPreviewPanel().repaint();
}
public void mousePressed(MouseEvent e){
bottomPanel.setLabelValues();
bottomPanel.getPreviewPanel().repaint();
}
public void mouseClicked(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseMoved(MouseEvent e){}
}
private class BottomPanel extends JPanel
{
private Color oldColor;
private JFormattedTextField red,green,blue;
private JPanel previewPanel;
public BottomPanel(Color color)
{
super(new BorderLayout());
oldColor=color;
if(oldColor==null)oldColor=Color.WHITE;
Font labelFont=new Font("Arial",0,11);
JLabel redLabel=new StyledLabel("Red :",labelFont),greenLabel=new StyledLabel("Green :",labelFont),blueLabel=new StyledLabel("Blue :",labelFont);
Dimension preferred=greenLabel.getPreferredSize();
redLabel.setPreferredSize(preferred);
blueLabel.setPreferredSize(preferred);
JPanel labelsPanel=new JPanel(new BorderLayout());
labelsPanel.add(labelledSpinnerPanel(redLabel,oldColor.getRed(),1),BorderLayout.NORTH);
labelsPanel.add(labelledSpinnerPanel(greenLabel,oldColor.getGreen(),2),BorderLayout.CENTER);
labelsPanel.add(labelledSpinnerPanel(blueLabel,oldColor.getBlue(),3),BorderLayout.SOUTH);
add(labelsPanel,BorderLayout.WEST);
add(previewPanel=new PreviewPanel(),BorderLayout.CENTER);
}
public void changeColor()
{
colorChooser.setColor(new Color((int)red.getValue(),(int)green.getValue(),(int)blue.getValue()));
previewPanel.repaint();
}
public JPanel getPreviewPanel()
{
return previewPanel;
}
public JPanel labelledSpinnerPanel(JLabel label,int initialValue,int order)
{
JPanel panel=new JPanel(new FlowLayout(FlowLayout.LEFT,10,5));
panel.setBackground(Color.WHITE);
panel.add(label);
JSpinner spinner=new JSpinner(new SpinnerNumberModel(initialValue,0,255,1));
spinner.setBorder(new LineBorder(Color.GRAY));
spinner.addChangeListener(new SpinnerListener());
JFormattedTextField field=((NumberEditor)spinner.getEditor()).getTextField();
if(order==1)red=field;
else if(order==2)green=field;
else blue=field;
field.setFormatterFactory(new DefaultFormatterFactory(new Formatter(field)));
field.setPreferredSize(new Dimension(25,18));
panel.add(spinner);
return panel;
}
public void setLabelValues()
{
Color selected=colorChooser.getColor();
red.setValue(selected.getRed());
green.setValue(selected.getGreen());
blue.setValue(selected.getBlue());
}
private class Formatter extends DefaultFormatter
{
DocumentFilter filter;
JFormattedTextField field;
public Formatter(JFormattedTextField field)
{
this.field=field;
filter=new Filter();
}
protected DocumentFilter getDocumentFilter()
{
return filter;
}
private class Filter extends DocumentFilter
{
public void replace(FilterBypass fb,int offset,int length,String text,AttributeSet attrs)throws BadLocationException
{
Document document=fb.getDocument();
String oldText=document.getText(0,document.getLength()),newText=oldText.substring(0,offset)+text+oldText.substring(offset+length);
try{
int value=Integer.valueOf(newText);
if(value>=0&&value<=255)
{
super.replace(fb,offset,length,text,attrs);
changeColor();
}
}
catch(NumberFormatException e){
Toolkit.getDefaultToolkit().beep();
}
}
public void remove(FilterBypass fb,int offset,int length)throws BadLocationException
{
Document document=fb.getDocument();
String text=document.getText(0,document.getLength());
if(text.length()-length==0)field.setValue(0);
else super.remove(fb,offset,length);
changeColor();
}
}
}
private class PreviewPanel extends JPanel
{
public PreviewPanel()
{
setBackground(Color.WHITE);
}
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
g.setColor(Color.GRAY);
g.drawRect(20,20,51,51);
g.setColor(oldColor);
g.fillRect(21,21,50,25);
g.setColor(colorChooser.getColor());
g.fillRect(21,46,50,25);
}
}
private class SpinnerListener implements ChangeListener
{
public void stateChanged(ChangeEvent e){
changeColor();
}
}
private class StyledLabel extends JLabel
{
public StyledLabel(String text,Font f)
{
super(text,RIGHT);
setFont(f);
}
}
}
public static void main(String[] a)
{
SwingUtilities.invokeLater(new Runnable(){
public void run(){
new ColorChooserDemo().setVisible(true);
}
});
}
}
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