defaulthsbchooserpanel.java

gcc的组建

	  slider.setValue(((Number) hSpinner.getValue()).intValue());
	if (! handlingMouse)
	  {
	    gradientPoint.x = (int) ((1
	                      - ((Number) sSpinner.getValue()).intValue() / 100f) * imgWidth);
	    gradientPoint.y = (int) ((1
	                      - ((Number) bSpinner.getValue()).intValue() / 100f) * imgHeight);
	  }
	break;
      case SLOCKED:
	if (slider != null)
	  slider.setValue(((Number) sSpinner.getValue()).intValue());
	if (! handlingMouse)
	  {
	    gradientPoint.x = (int) (((Number) hSpinner.getValue()).intValue() / 360f * imgWidth);
	    gradientPoint.y = (int) ((1
	                      - ((Number) bSpinner.getValue()).intValue() / 100f) * imgHeight);
	  }
	break;
      case BLOCKED:
	if (slider != null)
	  slider.setValue(((Number) bSpinner.getValue()).intValue());
	if (! handlingMouse)
	  {
	    gradientPoint.x = (int) (((Number) hSpinner.getValue()).intValue() / 360f * imgWidth);
	    gradientPoint.y = (int) ((1
	                      - ((Number) sSpinner.getValue()).intValue() / 100f) * imgHeight);
	  }
	break;
      }
    internalChange = false;

    if (! handlingMouse && slider != null && ! slider.getValueIsAdjusting())
      updateImage();

    if (! handlingMouse || locked != HLOCKED)
      updateTrack();
    updateTextFields();
  }

  /**
   * This method builds the DefaultHSBChooserPanel.
   */
  protected void buildChooser()
  {
    setLayout(new BorderLayout());

    add(buildRightPanel(), BorderLayout.EAST);

    JPanel container = new JPanel();
    container.setLayout(new BorderLayout());

    gradientPanel = new JPanel()
        {
	  public Dimension getPreferredSize()
	  {
	    return new Dimension(imgWidth, imgHeight);
	  }

	  public void paint(Graphics g)
	  {
	    if (gradientImage != null)
	      g.drawImage(gradientImage, 0, 0, this);

	    Color saved = g.getColor();
	    g.setColor(Color.WHITE);
	    g.drawOval(gradientPoint.x - 3, gradientPoint.y - 3, 6, 6);
	    g.setColor(saved);
	  }
        };

    MouseAdapter ml = new MainGradientMouseListener();
    gradientPanel.addMouseListener(ml);
    gradientPanel.addMouseMotionListener((MouseMotionListener) ml);

    trackPanel = new JPanel()
        {
	  public Dimension getPreferredSize()
	  {
	    return new Dimension(trackWidth, imgHeight);
	  }

	  public void paint(Graphics g)
	  {
	    if (trackImage != null)
	      g.drawImage(trackImage, 0, 0, this);
	  }
        };

    slider = new JSlider();
    slider.setPaintTrack(false);
    slider.setPaintTicks(false);

    slider.setOrientation(SwingConstants.VERTICAL);

    updateSlider();

    container.add(gradientPanel, BorderLayout.WEST);
    container.add(slider, BorderLayout.CENTER);
    container.add(trackPanel, BorderLayout.EAST);

    add(container, BorderLayout.WEST);
    slider.addChangeListener(new SliderChangeListener());
    repaint();
  }

  /**
   * This method uninstalls the DefaultHSBPanel.
   *
   * @param chooser The JColorChooser to remove this panel from.
   */
  public void uninstallChooserPanel(JColorChooser chooser)
  {
    trackImage = null;
    gradientImage = null;
    gradientPanel = null;
    slider = null;

    hSpinner = null;
    sSpinner = null;
    bSpinner = null;

    hRadio = null;
    sRadio = null;
    bRadio = null;

    removeAll();
    super.uninstallChooserPanel(chooser);
  }

  /**
   * This helper method creates the right side panel (the panel with the
   * Spinners and TextFields).
   *
   * @return The right side panel.
   */
  private Container buildRightPanel()
  {
    JPanel container = new JPanel();
    container.setLayout(new GridLayout(6, 2));

    hRadio = new JRadioButton("H");
    sRadio = new JRadioButton("S");
    bRadio = new JRadioButton("B");

    ButtonGroup group = new ButtonGroup();
    group.add(hRadio);
    group.add(sRadio);
    group.add(bRadio);

    hSpinner = new JSpinner(new SpinnerNumberModel(0, 0, 359, 1));
    sSpinner = new JSpinner(new SpinnerNumberModel(0, 0, 100, 1));
    bSpinner = new JSpinner(new SpinnerNumberModel(100, 0, 100, 1));

    hSpinner.setEnabled(false);
    sSpinner.setEnabled(false);
    bSpinner.setEnabled(false);

    ChangeListener cl = new RadioStateListener();
    ChangeListener scroll = new ImageScrollListener();

    hRadio.addChangeListener(cl);
    sRadio.addChangeListener(cl);
    bRadio.addChangeListener(cl);

    hSpinner.addChangeListener(scroll);
    sSpinner.addChangeListener(scroll);
    bSpinner.addChangeListener(scroll);

    hRadio.setSelected(true);

    container.add(hRadio);
    container.add(hSpinner);

    container.add(sRadio);
    container.add(sSpinner);

    container.add(bRadio);
    container.add(bSpinner);

    rFull = new JLabel("red full");
    gFull = new JLabel("green full");
    bFull = new JLabel("blue full");

    container.add(R);
    container.add(rFull);

    container.add(G);
    container.add(gFull);

    container.add(B);
    container.add(bFull);

    return container;
  }

  /**
   * This method returns the small display icon.
   *
   * @return The small display icon.
   */
  public Icon getSmallDisplayIcon()
  {
    return null;
  }

  /**
   * This method returns the large display icon.
   *
   * @return The large display icon.
   */
  public Icon getLargeDisplayIcon()
  {
    return null;
  }

  /**
   * This method paints the chooser panel.
   *
   * @param g The graphics object to paint with.
   */
  public void paint(Graphics g)
  {
    super.paint(g);
  }

  /**
   * This method updates the gradient image with a new one taking the Hue
   * value as the constant.
   */
  private void updateHLockImage()
  {
    int index = 0;
    int[] pix = new int[imgWidth * imgHeight];
    float hValue = ((Number) hSpinner.getValue()).intValue() / 360f;

    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < imgWidth; i++)
	pix[index++] = Color.HSBtoRGB(hValue, (imgWidth - i * 1f) / imgWidth,
	                              (imgHeight - j * 1f) / imgHeight)
	               | (255 << 24);

    gradientImage = createImage(new MemoryImageSource(imgWidth, imgHeight,
                                                      pix, 0, imgWidth));
  }

  /**
   * This method updates the gradient image with a new one taking the
   * Brightness value as the constant.
   */
  private void updateBLockImage()
  {
    int[] pix = new int[imgWidth * imgHeight];
    float bValue = ((Number) bSpinner.getValue()).intValue() / 100f;

    int index = 0;
    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < imgWidth; i++)
	pix[index++] = Color.HSBtoRGB(i * 1f / imgWidth,
	                              (imgHeight - j * 1f) / imgHeight, bValue)
	               | (255 << 24);

    gradientImage = createImage(new MemoryImageSource(imgWidth, imgHeight,
                                                      pix, 0, imgWidth));
  }

  /**
   * This method updates the gradient image with a new one taking the
   * Saturation value as the constant.
   */
  private void updateSLockImage()
  {
    int[] pix = new int[imgWidth * imgHeight];
    float sValue = ((Number) sSpinner.getValue()).intValue() / 100f;

    int index = 0;
    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < imgWidth; i++)
	pix[index++] = Color.HSBtoRGB(i * 1f / imgWidth, sValue,
	                              (imgHeight - j * 1f) / imgHeight)
	               | (255 << 24);
    gradientImage = createImage(new MemoryImageSource(imgWidth, imgHeight,
                                                      pix, 0, imgWidth));
  }

  /**
   * This method calls the appropriate method to update the gradient image
   * depending on which HSB value is constant.
   * This is package-private to avoid an accessor method.
   */
  void updateImage()
  {
    switch (locked)
      {
      case HLOCKED:
	updateHLockImage();
	break;
      case SLOCKED:
	updateSLockImage();
	break;
      case BLOCKED:
	updateBLockImage();
	break;
      }
  }

  /**
   * This method updates the TextFields with the correct RGB values.
   */
  private void updateTextFields()
  {
    int c = getColorSelectionModel().getSelectedColor().getRGB();

    rFull.setText("" + (c >> 16 & 0xff));
    gFull.setText("" + (c >> 8 & 0xff));
    bFull.setText("" + (c & 0xff));

    repaint();
  }

  /**
   * This method updates the slider in response to making a different HSB
   * property the constant.
   * This is package-private to avoid an accessor method.
   */
  void updateSlider()
  {
    if (slider == null)
      return;

    slider.setMinimum(0);
    if (locked == HLOCKED)
      {
	slider.setMaximum(359);
	;
	slider.setValue(((Number) hSpinner.getValue()).intValue());
	slider.setInverted(true);
      }
    else
      {
	slider.setMaximum(100);
	slider.setInverted(false);
	if (sRadio.isSelected())
	  slider.setValue(((Number) sSpinner.getValue()).intValue());
	else
	  slider.setValue(((Number) bSpinner.getValue()).intValue());
      }
    repaint();
  }

  /**
   * This method updates the track gradient image depending on which HSB
   * property is constant.
   * This is package-private to avoid an accessor method.
   */
  void updateTrack()
  {
    switch (locked)
      {
      case HLOCKED:
	updateHTrack();
	break;
      case SLOCKED:
	updateSTrack();
	break;
      case BLOCKED:
	updateBTrack();
	break;
      }
  }

  /**
   * This method updates the track gradient image if the Hue value is allowed
   * to change (according to the JRadioButtons).
   */
  private void updateHTrack()
  {
    int trackIndex = 0;
    int[] trackPix = new int[trackWidth * imgHeight];

    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < trackWidth; i++)
	trackPix[trackIndex++] = Color.HSBtoRGB(j * 1f / imgHeight, 1f, 1f)
	                         | (255 << 24);

    trackImage = createImage(new MemoryImageSource(trackWidth, imgHeight,
                                                   trackPix, 0, trackWidth));
  }

  /**
   * This method updates the track gradient image if the Saturation value is
   * allowed to change (according to the JRadioButtons).
   */
  private void updateSTrack()
  {
    int[] trackPix = new int[trackWidth * imgHeight];

    float hValue = ((Number) hSpinner.getValue()).intValue() / 360f;
    float bValue = ((Number) bSpinner.getValue()).intValue() / 100f;

    int trackIndex = 0;
    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < trackWidth; i++)
	trackPix[trackIndex++] = Color.HSBtoRGB(hValue,
	                                        (imgHeight - j * 1f) / imgHeight,
	                                        bValue) | (255 << 24);

    trackImage = createImage(new MemoryImageSource(trackWidth, imgHeight,
                                                   trackPix, 0, trackWidth));
  }

  /**
   * This method updates the track gradient image if the Brightness value is
   * allowed to change (according to the JRadioButtons).
   */
  private void updateBTrack()
  {
    int[] trackPix = new int[trackWidth * imgHeight];

    float hValue = ((Number) hSpinner.getValue()).intValue() / 360f;
    float sValue = ((Number) sSpinner.getValue()).intValue() / 100f;

    int trackIndex = 0;
    for (int j = 0; j < imgHeight; j++)
      for (int i = 0; i < trackWidth; i++)
	trackPix[trackIndex++] = Color.HSBtoRGB(hValue, sValue,
	                                        (imgHeight - j * 1f) / imgHeight)
	                         | (255 << 24);

    trackImage = createImage(new MemoryImageSource(trackWidth, imgHeight,
                                                   trackPix, 0, trackWidth));
  }

  /**
   * This method returns the HSB values for the currently selected color.
   *
   * @return The HSB values for the currently selected color.
   */
  private float[] getHSBValues()
  {
    Color c = getColorFromModel();
    float[] f = Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), null);
    return f;
  }
}