/*
* @(#)DefaultHSBChooserPanel.java 1.25 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing.colorchooser;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.awt.image.*;
/**
* Implements the default HSB Color chooser
*
* @version 1.25 12/19/03
* @author Tom Santos
* @author Steve Wilson
* @author Mark Davidson
* @author Shannon Hickey
*/
class DefaultHSBChooserPanel extends AbstractColorChooserPanel implements ChangeListener, HierarchyListener {
private transient HSBImage palette;
private transient HSBImage sliderPalette;
private transient Image paletteImage;
private transient Image sliderPaletteImage;
private JSlider slider;
private JSpinner hField;
private JSpinner sField;
private JSpinner bField;
private JTextField redField;
private JTextField greenField;
private JTextField blueField;
private boolean isAdjusting = false; // Flag which indicates that values are set internally
private Point paletteSelection = new Point();
private JLabel paletteLabel;
private JLabel sliderPaletteLabel;
private JRadioButton hRadio;
private JRadioButton sRadio;
private JRadioButton bRadio;
private static final int PALETTE_DIMENSION = 200;
private static final int MAX_HUE_VALUE = 359;
private static final int MAX_SATURATION_VALUE = 100;
private static final int MAX_BRIGHTNESS_VALUE = 100;
private int currentMode = HUE_MODE;
private static final int HUE_MODE = 0;
private static final int SATURATION_MODE = 1;
private static final int BRIGHTNESS_MODE = 2;
public DefaultHSBChooserPanel() {
}
private void addPaletteListeners() {
paletteLabel.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e ) {
float[] hsb = new float[3];
palette.getHSBForLocation( e.getX(), e.getY(), hsb );
updateHSB( hsb[0], hsb[1], hsb[2] );
}
});
paletteLabel.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged( MouseEvent e ){
int labelWidth = paletteLabel.getWidth();
int labelHeight = paletteLabel.getHeight();
int x = e.getX();
int y = e.getY();
if ( x >= labelWidth ) {
x = labelWidth - 1;
}
if ( y >= labelHeight ) {
y = labelHeight - 1;
}
if ( x < 0 ) {
x = 0;
}
if ( y < 0 ) {
y = 0;
}
float[] hsb = new float[3];
palette.getHSBForLocation( x, y, hsb );
updateHSB( hsb[0], hsb[1], hsb[2] );
}
});
}
private void updatePalette( float h, float s, float b ) {
int x = 0;
int y = 0;
switch ( currentMode ) {
case HUE_MODE:
if ( h != palette.getHue() ) {
palette.setHue( h );
palette.nextFrame();
}
x = PALETTE_DIMENSION - (int)(s * PALETTE_DIMENSION);
y = PALETTE_DIMENSION - (int)(b * PALETTE_DIMENSION);
break;
case SATURATION_MODE:
if ( s != palette.getSaturation() ) {
palette.setSaturation( s );
palette.nextFrame();
}
x = (int)(h * PALETTE_DIMENSION);
y = PALETTE_DIMENSION - (int)(b * PALETTE_DIMENSION);
break;
case BRIGHTNESS_MODE:
if ( b != palette.getBrightness() ) {
palette.setBrightness( b );
palette.nextFrame();
}
x = (int)(h * PALETTE_DIMENSION);
y = PALETTE_DIMENSION - (int)(s * PALETTE_DIMENSION);
break;
}
paletteSelection.setLocation( x, y );
paletteLabel.repaint();
}
private void updateSlider( float h, float s, float b ) {
// Update the slider palette if necessary.
// When the slider is the hue slider or the hue hasn't changed,
// the hue of the palette will not need to be updated.
if (currentMode != HUE_MODE && h != sliderPalette.getHue() ) {
sliderPalette.setHue( h );
sliderPalette.nextFrame();
}
float value = 0f;
switch ( currentMode ) {
case HUE_MODE:
value = h;
break;
case SATURATION_MODE:
value = s;
break;
case BRIGHTNESS_MODE:
value = b;
break;
}
slider.setValue( Math.round(value * (slider.getMaximum())) );
}
private void updateHSBTextFields( float hue, float saturation, float brightness ) {
int h = Math.round(hue * 359);
int s = Math.round(saturation * 100);
int b = Math.round(brightness * 100);
if (((Integer)hField.getValue()).intValue() != h) {
hField.setValue(new Integer(h));
}
if (((Integer)sField.getValue()).intValue() != s) {
sField.setValue(new Integer(s));
}
if (((Integer)bField.getValue()).intValue() != b) {
bField.setValue(new Integer(b));
}
}
/**
* Updates the values of the RGB fields to reflect the new color change
*/
private void updateRGBTextFields( Color color ) {
redField.setText(String.valueOf(color.getRed()));
greenField.setText(String.valueOf(color.getGreen()));
blueField.setText(String.valueOf(color.getBlue()));
}
/**
* Main internal method of updating the ui controls and the color model.
*/
private void updateHSB( float h, float s, float b ) {
if ( !isAdjusting ) {
isAdjusting = true;
updatePalette( h, s, b );
updateSlider( h, s, b );
updateHSBTextFields( h, s, b );
Color color = Color.getHSBColor(h, s, b);
updateRGBTextFields( color );
getColorSelectionModel().setSelectedColor( color );
isAdjusting = false;
}
}
/**
* Invoked automatically when the model's state changes.
* It is also called by <code>installChooserPanel</code> to allow
* you to set up the initial state of your chooser.
* Override this method to update your <code>ChooserPanel</code>.
*/
public void updateChooser() {
if ( !isAdjusting ) {
float[] hsb = getHSBColorFromModel();
updateHSB( hsb[0], hsb[1], hsb[2] );
}
}
public void installChooserPanel(JColorChooser enclosingChooser) {
super.installChooserPanel(enclosingChooser);
addHierarchyListener(this);
}
/**
* Invoked when the panel is removed from the chooser.
*/
public void uninstallChooserPanel(JColorChooser enclosingChooser) {
super.uninstallChooserPanel(enclosingChooser);
cleanupPalettesIfNecessary();
removeAll();
removeHierarchyListener(this);
}
/**
* Returns an float array containing the HSB values of the selected color from
* the ColorSelectionModel
*/
private float[] getHSBColorFromModel() {
Color color = getColorFromModel();
float[] hsb = new float[3];
Color.RGBtoHSB( color.getRed(), color.getGreen(), color.getBlue(), hsb );
return hsb;
}
/**
* Builds a new chooser panel.
*/
protected void buildChooser() {
setLayout(new BorderLayout());
JComponent spp = buildSliderPalettePanel();
add(spp, BorderLayout.BEFORE_LINE_BEGINS);
JPanel controlHolder = new JPanel(new SmartGridLayout(1,3));
JComponent hsbControls = buildHSBControls();
controlHolder.add(hsbControls);
controlHolder.add(new JLabel(" ")); // spacer
JComponent rgbControls = buildRGBControls();
controlHolder.add(rgbControls);
controlHolder.setBorder(new EmptyBorder( 10, 5, 10, 5));
add( controlHolder, BorderLayout.CENTER);
}
/**
* Creates the panel with the uneditable RGB field
*/
private JComponent buildRGBControls() {
JPanel panel = new JPanel(new SmartGridLayout(2,3));
Color color = getColorFromModel();
redField = new JTextField( String.valueOf(color.getRed()), 3 );
redField.setEditable(false);
redField.setHorizontalAlignment( JTextField.RIGHT );
greenField = new JTextField(String.valueOf(color.getGreen()), 3 );
greenField.setEditable(false);
greenField.setHorizontalAlignment( JTextField.RIGHT );
blueField = new JTextField( String.valueOf(color.getBlue()), 3 );
blueField.setEditable(false);
blueField.setHorizontalAlignment( JTextField.RIGHT );
String redString = UIManager.getString("ColorChooser.hsbRedText");
String greenString = UIManager.getString("ColorChooser.hsbGreenText");
String blueString = UIManager.getString("ColorChooser.hsbBlueText");
panel.add( new JLabel(redString) );
panel.add( redField );
panel.add( new JLabel(greenString) );
panel.add( greenField );
panel.add( new JLabel(blueString) );
panel.add( blueField );
return panel;
}
/**
* Creates the panel with the editable HSB fields and the radio buttons.
*/
private JComponent buildHSBControls() {
String hueString = UIManager.getString("ColorChooser.hsbHueText");
String saturationString = UIManager.getString("ColorChooser.hsbSaturationText");
String brightnessString = UIManager.getString("ColorChooser.hsbBrightnessText");
RadioButtonHandler handler = new RadioButtonHandler();
hRadio = new JRadioButton(hueString);
hRadio.addActionListener(handler);
hRadio.setSelected(true);
sRadio = new JRadioButton(saturationString);
sRadio.addActionListener(handler);
bRadio = new JRadioButton(brightnessString);
bRadio.addActionListener(handler);
ButtonGroup group = new ButtonGroup();
group.add(hRadio);
group.add(sRadio);
group.add(bRadio);
float[] hsb = getHSBColorFromModel();
hField = new JSpinner(new SpinnerNumberModel((int)(hsb[0] * 359), 0, 359, 1));
sField = new JSpinner(new SpinnerNumberModel((int)(hsb[1] * 100), 0, 100, 1));
bField = new JSpinner(new SpinnerNumberModel((int)(hsb[2] * 100), 0, 100, 1));
hField.addChangeListener(this);
sField.addChangeListener(this);
bField.addChangeListener(this);
JPanel panel = new JPanel( new SmartGridLayout(2, 3) );
panel.add(hRadio);
panel.add(hField);
panel.add(sRadio);
panel.add(sField);
panel.add(bRadio);
panel.add(bField);
return panel;
}
/**
* Handler for the radio button classes.
*/
private class RadioButtonHandler implements ActionListener {
public void actionPerformed(ActionEvent evt) {
Object obj = evt.getSource();
if (obj instanceof JRadioButton) {
JRadioButton button = (JRadioButton)obj;
if (button == hRadio) {
setMode(HUE_MODE);
} else if (button == sRadio) {
setMode(SATURATION_MODE);
} else if (button == bRadio) {
setMode(BRIGHTNESS_MODE);
}
}
}
}
private void setMode(int mode) {
if (currentMode == mode) {
return;
}
isAdjusting = true; // Ensure no events propagate from changing slider value.
currentMode = mode;
float[] hsb = getHSBColorFromModel();
switch (currentMode) {
case HUE_MODE:
slider.setInverted(true);
slider.setMaximum(MAX_HUE_VALUE);
palette.setValues(HSBImage.HSQUARE, hsb[0], 1.0f, 1.0f);
sliderPalette.setValues(HSBImage.HSLIDER, 0f, 1.0f, 1.0f);
break;
case SATURATION_MODE:
slider.setInverted(false);
slider.setMaximum(MAX_SATURATION_VALUE);
palette.setValues(HSBImage.SSQUARE, hsb[0], hsb[1], 1.0f);
sliderPalette.setValues(HSBImage.SSLIDER, hsb[0], 1.0f, 1.0f);
break;
case BRIGHTNESS_MODE:
slider.setInverted(false);
slider.setMaximum(MAX_BRIGHTNESS_VALUE);
palette.setValues(HSBImage.BSQUARE, hsb[0], 1.0f, hsb[2]);
sliderPalette.setValues(HSBImage.BSLIDER, hsb[0], 1.0f, 1.0f);
break;
}
isAdjusting = false;
palette.nextFrame();
sliderPalette.nextFrame();
updateChooser();
}
protected JComponent buildSliderPalettePanel() {
// This slider has to have a minimum of 0. A lot of math in this file is simplified due to this.
slider = new JSlider(JSlider.VERTICAL, 0, MAX_HUE_VALUE, 0);
slider.setInverted(true);
slider.setPaintTrack(false);
slider.setPreferredSize(new Dimension(slider.getPreferredSize().width, PALETTE_DIMENSION + 15));
slider.addChangeListener(this);
// We're not painting ticks, but need to ask UI classes to
// paint arrow shape anyway, if possible.
slider.putClientProperty("Slider.paintThumbArrowShape", Boolean.TRUE);
paletteLabel = createPaletteLabel();
addPaletteListeners();
sliderPaletteLabel = new JLabel();
JPanel panel = new JPanel();
panel.add( paletteLabel );
panel.add( slider );
panel.add( sliderPaletteLabel );
initializePalettesIfNecessary();
return panel;
}
private void initializePalettesIfNecessary() {
if (palette != null) {
return;
}
float[] hsb = getHSBColorFromModel();
switch(currentMode){
case HUE_MODE:
palette = new HSBImage(HSBImage.HSQUARE, PALETTE_DIMENSION, PALETTE_DIMENSION, hsb[0], 1.0f, 1.0f);
sliderPalette = new HSBImage(HSBImage.HSLIDER, 16, PALETTE_DIMENSION, 0f, 1.0f, 1.0f);
break;
case SATURATION_MODE:
palette = new HSBImage(HSBImage.SSQUARE, PALETTE_DIMENSION, PALETTE_DIMENSION, 1.0f, hsb[1], 1.0f);
sliderPalette = new HSBImage(HSBImage.SSLIDER, 16, PALETTE_DIMENSION, 1.0f, 0f, 1.0f);
break;
case BRIGHTNESS_MODE:
palette = new HSBImage(HSBImage.BSQUARE, PALETTE_DIMENSION, PALETTE_DIMENSION, 1.0f, 1.0f, hsb[2]);
sliderPalette = new HSBImage(HSBImage.BSLIDER, 16, PALETTE_DIMENSION, 1.0f, 1.0f, 0f);
break;
}
paletteImage = Toolkit.getDefaultToolkit().createImage(palette);
sliderPaletteImage = Toolkit.getDefaultToolkit().createImage(sliderPalette);
paletteLabel.setIcon(new ImageIcon(paletteImage));
sliderPaletteLabel.setIcon(new ImageIcon(sliderPaletteImage));
}
private void cleanupPalettesIfNecessary() {
if (palette == null) {
return;
}
palette.aborted = true;
sliderPalette.aborted = true;
palette.nextFrame();
sliderPalette.nextFrame();
palette = null;
sliderPalette = null;
paletteImage = null;
sliderPaletteImage = null;
paletteLabel.setIcon(null);
sliderPaletteLabel.setIcon(null);
}
protected JLabel createPaletteLabel() {
return new JLabel() {
protected void paintComponent( Graphics g ) {
super.paintComponent( g );
g.setColor( Color.white );
g.drawOval( paletteSelection.x - 4, paletteSelection.y - 4, 8, 8 );
}
};
}
public String getDisplayName() {
return UIManager.getString("ColorChooser.hsbNameText");
}
/**
* Provides a hint to the look and feel as to the
* <code>KeyEvent.VK</code> constant that can be used as a mnemonic to
* access the panel. A return value <= 0 indicates there is no mnemonic.
* <p>
* The return value here is a hint, it is ultimately up to the look
* and feel to honor the return value in some meaningful way.
* <p>
* This implementation looks up the value from the default
* <code>ColorChooser.hsbMnemonic</code>, or if it
* isn't available (or not an <code>Integer</code>) returns -1.
* The lookup for the default is done through the <code>UIManager</code>:
* <code>UIManager.get("ColorChooser.rgbMnemonic");</code>.
*
* @return KeyEvent.VK constant identifying the mnemonic; <= 0 for no
* mnemonic
* @see #getDisplayedMnemonicIndex
* @since 1.4
*/
public int getMnemonic() {
return getInt("ColorChooser.hsbMnemonic", -1);
}
/**
* Provides a hint to the look and feel as to the index of the character in
* <code>getDisplayName</code> that should be visually identified as the
* mnemonic. The look and feel should only use this if
* <code>getMnemonic</code> returns a value > 0.
* <p>
* The return value here is a hint, it is ultimately up to the look
* and feel to honor the return value in some meaningful way. For example,
* a look and feel may wish to render each
* <code>AbstractColorChooserPanel</code> in a <code>JTabbedPane</code>,
* and further use this return value to underline a character in
* the <code>getDisplayName</code>.
* <p>
* This implementation looks up the value from the default
* <code>ColorChooser.rgbDisplayedMnemonicIndex</code>, or if it
* isn't available (or not an <code>Integer</code>) returns -1.
* The lookup for the default is done through the <code>UIManager</code>:
* <code>UIManager.get("ColorChooser.hsbDisplayedMnemonicIndex");</code>.
*
* @return Character index to render mnemonic for; -1 to provide no
* visual identifier for this panel.
* @see #getMnemonic
* @since 1.4
*/
public int getDisplayedMnemonicIndex() {
return getInt("ColorChooser.hsbDisplayedMnemonicIndex", -1);
}
public Icon getSmallDisplayIcon() {
return null;
}
public Icon getLargeDisplayIcon() {
return null;
}
/**
* Class for the slider and palette images.
*/
class HSBImage extends SyntheticImage {
protected float h = .0f;
protected float s = .0f;
protected float b = .0f;
protected float[] hsb = new float[3];
protected boolean isDirty = true;
protected int cachedY;
protected int cachedColor;
protected int type;
private static final int HSQUARE = 0;
private static final int SSQUARE = 1;
private static final int BSQUARE = 2;
private static final int HSLIDER = 3;
private static final int SSLIDER = 4;
private static final int BSLIDER = 5;
protected HSBImage(int type, int width, int height, float h, float s, float b) {
super(width, height);
setValues(type, h, s, b);
}
public void setValues(int type, float h, float s, float b) {
this.type = type;
cachedY = -1;
cachedColor = 0;
setHue( h );
setSaturation( s );
setBrightness( b );
}
public final void setHue( float hue ) {
h = hue;
}
public final void setSaturation( float saturation ) {
s = saturation;
}
public final void setBrightness( float brightness ) {
b = brightness;
}
public final float getHue() {
return h;
}
public final float getSaturation() {
return s;
}
public final float getBrightness() {
return b;
}
protected boolean isStatic() {
return false;
}
public synchronized void nextFrame() {
isDirty = true;
notifyAll();
}
public synchronized void addConsumer(ImageConsumer ic) {
isDirty = true;
super.addConsumer(ic);
}
private int getRGBForLocation( int x, int y ) {
if (type >= HSLIDER && y == cachedY) {
return cachedColor;
}
getHSBForLocation( x, y, hsb );
cachedY = y;
cachedColor = Color.HSBtoRGB( hsb[0], hsb[1], hsb[2] );
return cachedColor;
}
public void getHSBForLocation( int x, int y, float[] hsbArray ) {
switch (type) {
case HSQUARE: {
float saturationStep = ((float)x) / width;
float brightnessStep = ((float)y) / height;
hsbArray[0] = h;
hsbArray[1] = s - saturationStep;
hsbArray[2] = b - brightnessStep;
break;
}
case SSQUARE: {
float brightnessStep = ((float)y) / height;
float step = 1.0f / ((float)width);
hsbArray[0] = x * step;
hsbArray[1] = s;
hsbArray[2] = 1.0f - brightnessStep;
break;
}
case BSQUARE: {
float saturationStep = ((float)y) / height;
float step = 1.0f / ((float)width);
hsbArray[0] = x * step;
hsbArray[1] = 1.0f - saturationStep;
hsbArray[2] = b;
break;
}
case HSLIDER: {
float step = 1.0f / ((float)height);
hsbArray[0] = y * step;
hsbArray[1] = s;
hsbArray[2] = b;
break;
}
case SSLIDER: {
float saturationStep = ((float)y) / height;
hsbArray[0] = h;
hsbArray[1] = s - saturationStep;
hsbArray[2] = b;
break;
}
case BSLIDER: {
float brightnessStep = ((float)y) / height;
hsbArray[0] = h;
hsbArray[1] = s;
hsbArray[2] = b - brightnessStep;
break;
}
}
}
/**
* Overriden method from SyntheticImage
*/
protected void computeRow( int y, int[] row ) {
if ( y == 0 ) {
synchronized ( this ) {
try {
while ( !isDirty ) {
wait();
}
} catch (InterruptedException ie) {
}
isDirty = false;
}
}
if (aborted) {
return;
}
for ( int i = 0; i < row.length; ++i ) {
row[i] = getRGBForLocation( i, y );
}
}
}
public void stateChanged(ChangeEvent e) {
if (e.getSource() == slider) {
boolean modelIsAdjusting = slider.getModel().getValueIsAdjusting();
if (!modelIsAdjusting && !isAdjusting) {
int sliderValue = slider.getValue();
int sliderRange = slider.getMaximum();
float value = (float)sliderValue / (float)sliderRange;
float[] hsb = getHSBColorFromModel();
switch ( currentMode ){
case HUE_MODE:
updateHSB(value, hsb[1], hsb[2]);
break;
case SATURATION_MODE:
updateHSB(hsb[0], value, hsb[2]);
break;
case BRIGHTNESS_MODE:
updateHSB(hsb[0], hsb[1], value);
break;
}
}
} else if (e.getSource() instanceof JSpinner) {
float hue = ((Integer)hField.getValue()).floatValue() / 359f;
float saturation = ((Integer)sField.getValue()).floatValue() / 100f;
float brightness = ((Integer)bField.getValue()).floatValue() / 100f;
updateHSB(hue, saturation, brightness);
}
}
public void hierarchyChanged(HierarchyEvent he) {
if ((he.getChangeFlags() & HierarchyEvent.DISPLAYABILITY_CHANGED) != 0) {
if (isDisplayable()) {
initializePalettesIfNecessary();
} else {
cleanupPalettesIfNecessary();
}
}
}
}
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