所以这是我们的代码......我们的nobs并需要一些帮助，让我们的按钮在显示高度和宽度的色调/饱和度/亮度之间切换。目前，我们的应用程序仅显示宽度和高度饱和度的色调。我们的按钮不起作用，我们无法清空视图并重新绘制另一个视图。有人可以帮忙吗？
package no.uib.info221.oblig1;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import java.util.List;
import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import com.github.imgur.ImgUr;
import com.github.imgur.api.album.AlbumRequest;
import com.github.imgur.api.album.AlbumResponse;
import com.github.imgur.api.model.ImageProperty;
public class ImgurViz extends JFrame {
private static final long serialVersionUID = 7954882289770950884L;
//private JProgressBar progressBar;
private JButton HSbutton;
private JButton BSbutton;
private JButton BHbutton;
private JPanel knappepanel;
private JPanel bildepanel;
public JLabel skjerm;
int w = 0;
int h = 1;
/**
* constructor
* klassen.
* @throws IOException
*/
public ImgurViz() throws IOException {
super(); //Calls the superclass
setupInterface(); //
fetchAndDisplayImages(); //
}
//Empties the panel when a new jlabel is called
public void emptyPanel(){
bildepanel.revalidate();
bildepanel.removeAll();
bildepanel.repaint();
}
// Creates JButtons to change the sorting of the images
public void knapper(){
knappepanel = new JPanel(); // Knappepanel = button panel
bildepanel = new JPanel(); // Imagepanel = image panel
bildepanel.setLayout(null);
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(knappepanel,BorderLayout.NORTH);
this.getContentPane().add(bildepanel,BorderLayout.CENTER);
//knappepanel.setOpaque(false);
// Knapp for HUE og SATURATION KNAPP = button
HSbutton = new JButton ("Hue og Saturation");
knappepanel.add(HSbutton);
//Knapp for BRIGHTNESS og SATURARION
BSbutton = new JButton ("Brightness og Saturation");
knappepanel.add(BSbutton);
// Knapp for BRIGHTNESS OG HUE
BHbutton = new JButton ("Brightness og Hue");
knappepanel.add(BHbutton);
// Metode for knapp for HUE og SATURATION
HSbutton.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
emptyPanel();
w = 0;
h = 1;
System.out.println("Hue: " + w + " Saturation: " + h);
}
});
// Metode for knapp for BRIGHTNESS og SATURATION
BSbutton.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
w = 2;
h = 1;
System.out.println("Brightness: " + w + " Saturation: " + h);
}
});
// Metode for knapp for BRIGHTNESS OG HUE
BHbutton.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
emptyPanel();
w = 2;
h = 0;
System.out.println("Brightness: " + w + " Hue: " + h);
}
});
this.setContentPane(knappepanel);
}
/**
* Fetches images for an album on Imgur
*
* @throws IOException
*/
public void fetchAndDisplayImages() throws IOException {
ImgUr imgUr = new ImgUr ("4ded93e63e96762");
AlbumResponse response = imgUr.call(new AlbumRequest("RJBiQ"));
List<ImageProperty> images = response.getImages();
float[] bildedata = new float[3];
int count = images.size();
for (int i = 0; i<count;i++){
BufferedImage img = ImageIO.read(new URL(images.get(i).getLinks().getOriginal()));
BufferedImage thumb = ImageIO.read(new URL(images.get(i).getLinks().getSmallSquare()));
bildedata = pictureAnalyze (img);
int width = ((int)Toolkit.getDefaultToolkit().getScreenSize().getWidth())/2; // Henter ut bredden p brukerens skjerm
int height = ((int)Toolkit.getDefaultToolkit().getScreenSize().getHeight())/2; // Henter ut høyden p brukerens skjerm
int posW = (int)(bildedata [w] * width);
int posH = (int)(bildedata [h] * height);
skjerm = new JLabel(new ImageIcon(thumb));
skjerm.setBounds(posW, posH, width, height);
bildepanel.add(skjerm);
this.getContentPane().add(skjerm);
this.getContentPane().setLayout(null);
this.getContentPane().repaint();
this.setVisible(true);
// skjerm.addMouseListener(new MouseAdapter() {
// @Override
// public void mouseEntered(java.awt.event.MouseEvent evt) {
// //FAEN TA DEG!!
// }
// });
}
}
// RGB to HSB Finds the RGB value of each image, transformes the values to HSB and finds the average
public float[] pictureAnalyze (BufferedImage img){
float[] result = new float[3];
float h = 0f;
float s = 0f;
float b = 0f;
for (int x = 0; x < img.getWidth(); x++){
for (int y = 0; y < img.getHeight(); y++){
int c = img.getRGB(x,y);
int red = (c >> 16) & 0xff;
int green = (c >> 8) & 0xff;
int blue = (c & 0xff);
float[] hsb = Color.RGBtoHSB(red,green,blue, null);
h += hsb[0];
s += hsb[1];
b += hsb[2];
}
}
h = h/(img.getWidth()*img.getHeight());
s = s/(img.getWidth()*img.getHeight());
b = b/(img.getWidth()*img.getHeight());
result [0] = h;
result [1] = s;
result [2] = b;
return result;
}
// // Shannon entropi
// public static Double calculateShannonEntropy(List <ImageProperty> images) {
// Map<String, Integer> map = new HashMap<String, Integer>();
//
// // tel kvar instans av verdiane
// for (String sequence : images) {
// if (!map.containsKey(sequence)) {
// map.put(sequence, 0);
//
// }
// map.put(sequence, map.get(sequence) + 1);
// }
//
// //Kalkulerer entropien
//
// Double result = 0.0;
// for (String sequence : map.keySet()) {
// Double frequency = (double) map.get(sequence) / images.size();
// result -= frequency * (Math.log(frequency) / Math.log(2));
// }
//
// return result;
//
// }
/**
private void setupInterface() {
int width = (int)Toolkit.getDefaultToolkit().getScreenSize().getWidth(); // Henter ut bredden p brukerens skjerm
int height = (int)Toolkit.getDefaultToolkit().getScreenSize().getHeight(); // Henter ut h¯yden p brukerens skjerm
this.setSize(width, height); // Setter st¯rrelsen p vinduet til  vÊre lik skjermens bredde og h¯yde
this.setExtendedState(Frame.MAXIMIZED_BOTH); // Sier fra om at vinduet skal vÊre maksimert
this.setUndecorated(true); // setter fullscreen
this.getContentPane().setBackground(Color.BLACK ); // Setter bakgrunnsfargen p innholdspanelet (contentPane) til svart
knapper();
this.setVisible(true); // Viser vinduet p skjermen
}
public static void main(String[] args) throws IOException {
ImgurViz viz = new ImgurViz(); // Oppretter et nytt ImgurViz-objekt. Dette medf¯rer at det nye objektets konstrukt¯r kj¯res
}
}
答案 0 :(得分：1)
如JColorChooser的HSV面板所示，一次只显示两个颜色空间three dimensions更容易。无论您的目标是什么，使用Color.getHSBColor()缩放调色板都会更容易。这些examples可能会提供一些见解或帮助您准备sscce。