用Java语言实现RGB与CMYK色彩空间的转换

package colorjpane; import javax.swing.*; import javax.swing.event.*; import javax.swing.colorchooser.*; import java.awt.*; import java.awt.event.*; public class Test extends JApplet { private JColorChooser chooser = new JColorChooser(); private AbstractColorChooserPanel colorPanels[] = new AbstractColorChooserPanel[] { new ListPanel(), }; private JButton button = new JButton("Show Color Chooser"); private JDialog dialog; public void init() { Container contentPane = getContentPane(); contentPane.setLayout(new FlowLayout()); contentPane.add(button, BorderLayout.CENTER); chooser.addChooserPanel(colorPanels[0]); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(dialog == null) dialog = JColorChooser.createDialog( Test.this, // parent comp "Pick A Color", // dialog title false, // modality chooser, null, null); dialog.setVisible(true); } }); } } class ListPanel extends AbstractColorChooserPanel implements ListSelectionListener { private JPanel labelPanel = new JPanel(), listPanel = new JPanel(); private JList CList = new JList(), MList = new JList(),YList = new JList(), KList=new JList(); private DefaultListModel CModel = new DefaultListModel(), MModel = new DefaultListModel(),YModel = new DefaultListModel(), KModel=new DefaultListModel(); private boolean isAdjusting = false; ColorTranslate CMYKRGB=new ColorTranslate(); public void updateChooser() { if( ! isAdjusting) { isAdjusting = true; Color color = getColorFromModel(); CMYKRGB.RGBtoCMYK(color); CList.setSelectedIndex(CMYKRGB.C); MList.setSelectedIndex(CMYKRGB.M); YList.setSelectedIndex(CMYKRGB.Y); KList.setSelectedIndex(CMYKRGB.K); CList.ensureIndexIsVisible(CMYKRGB.C); MList.ensureIndexIsVisible(CMYKRGB.M); YList.ensureIndexIsVisible(CMYKRGB.Y); KList.ensureIndexIsVisible(CMYKRGB.K); isAdjusting = false; } } protected void buildChooser() { CList.setFixedCellWidth(50); MList.setFixedCellWidth(50); YList.setFixedCellWidth(50); KList.setFixedCellWidth(50); for(int i=0; i <=100; ++i) { CModel.addElement(Integer.toString(i)); MModel.addElement(Integer.toString(i)); YModel.addElement(Integer.toString(i)); KModel.addElement(Integer.toString(i)); } CList.setModel(CModel); MList.setModel(MModel); YList.setModel(YModel); KList.setModel(KModel); listPanel.setLayout(new GridLayout(0,4,10,0)); listPanel.add(new JScrollPane(CList)); listPanel.add(new JScrollPane(MList)); listPanel.add(new JScrollPane(YList)); listPanel.add(new JScrollPane(KList)); labelPanel.setLayout(new GridLayout(0,4,10,0)); labelPanel.add(new JLabel("C")); labelPanel.add(new JLabel("M")); labelPanel.add(new JLabel("Y")); labelPanel.add(new JLabel("K")); setLayout(new BorderLayout()); add(labelPanel, BorderLayout.NORTH); add(listPanel, BorderLayout.CENTER); CList.addListSelectionListener(this); MList.addListSelectionListener(this); YList.addListSelectionListener(this); KList.addListSelectionListener(this); } public void valueChanged(ListSelectionEvent e) { if(isAdjusting) return; isAdjusting=true; CMYKRGB.C = CList.getSelectedIndex(); CMYKRGB.M = MList.getSelectedIndex(); CMYKRGB.Y = YList.getSelectedIndex(); CMYKRGB.K = KList.getSelectedIndex(); if((CMYKRGB.C<=100)&&(CMYKRGB.M<=100)&&(CMYKRGB.Y<=100) &&(CMYKRGB.K<=100)&&(CMYKRGB.C>=0)&&(CMYKRGB.M>=0)&&(CMYKRGB.Y>=0) &&(CMYKRGB.K>=0)) getColorSelectionModel().setSelectedColor(CMYKRGB.CMYKtoRGB()); isAdjusting=false; } public String getDisplayName() { return "CMYK"; } public Icon getSmallDisplayIcon() { return null; } public Icon getLargeDisplayIcon() { return null; } }