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Diffstat (limited to 'libjava/classpath/javax/swing/colorchooser/DefaultHSBChooserPanel.java')
-rw-r--r-- | libjava/classpath/javax/swing/colorchooser/DefaultHSBChooserPanel.java | 891 |
1 files changed, 891 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/colorchooser/DefaultHSBChooserPanel.java b/libjava/classpath/javax/swing/colorchooser/DefaultHSBChooserPanel.java new file mode 100644 index 00000000000..71d6c75b5f9 --- /dev/null +++ b/libjava/classpath/javax/swing/colorchooser/DefaultHSBChooserPanel.java @@ -0,0 +1,891 @@ +/* DefaultHSBChooserPanel.java -- + Copyright (C) 2004, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package javax.swing.colorchooser; + +import java.awt.BorderLayout; +import java.awt.Color; +import java.awt.Container; +import java.awt.Dimension; +import java.awt.Graphics; +import java.awt.GridLayout; +import java.awt.Image; +import java.awt.Point; +import java.awt.event.MouseAdapter; +import java.awt.event.MouseEvent; +import java.awt.event.MouseMotionListener; +import java.awt.image.MemoryImageSource; + +import javax.swing.AbstractButton; +import javax.swing.ButtonGroup; +import javax.swing.Icon; +import javax.swing.JColorChooser; +import javax.swing.JLabel; +import javax.swing.JPanel; +import javax.swing.JRadioButton; +import javax.swing.JSlider; +import javax.swing.JSpinner; +import javax.swing.SpinnerNumberModel; +import javax.swing.SwingConstants; +import javax.swing.event.ChangeEvent; +import javax.swing.event.ChangeListener; + +/** + * This is the Default HSB Panel displayed in the JColorChooser. + */ +class DefaultHSBChooserPanel extends AbstractColorChooserPanel +{ + /** The gradient image displayed. + * This is package-private to avoid an accessor method. */ + transient Image gradientImage; + + /** The Panel that holds the gradient image. */ + private transient JPanel gradientPanel; + + /** The track gradient image. + * This is package-private to avoid an accessor method. */ + transient Image trackImage; + + /** The panel that holds the track. */ + private transient JPanel trackPanel; + + /** The slider for the locked HSB value. + * This is package-private to avoid an accessor method. */ + transient JSlider slider; + + /** The RadioButton that controls the Hue. + * This is package-private to avoid an accessor method. */ + transient JRadioButton hRadio; + + /** The RadioButton that controls the Saturation. + * This is package-private to avoid an accessor method. */ + transient JRadioButton sRadio; + + /** The RadioButton that controls the Brightness. + * This is package-private to avoid an accessor method. */ + transient JRadioButton bRadio; + + /** The JSpinner that controls the Hue. + * This is package-private to avoid an accessor method. */ + transient JSpinner hSpinner; + + /** The JSpinner that controls the Saturation. + * This is package-private to avoid an accessor method. */ + transient JSpinner sSpinner; + + /** The JSpinner that controls the Brightness. + * This is package-private to avoid an accessor method. */ + transient JSpinner bSpinner; + + /** The default width of the gradient image. */ + private static final int imgWidth = 200; + + /** The default height of the gradient image. */ + private static final int imgHeight = 200; + + /** The default width of the track gradient. */ + private static final int trackWidth = 30; + + /** The JLabel for Red. */ + private static final JLabel R = new JLabel("R"); + + /** The JLabel for Green. */ + private static final JLabel G = new JLabel("G"); + + /** The JLabel for Blue. */ + private static final JLabel B = new JLabel("B"); + + // FIXME: Should be textfields. + + /** The JLabel that displays the value of Red. */ + private transient JLabel rFull; + + /** The JLabel that displays the value of Green. */ + private transient JLabel gFull; + + /** The JLabel that displays the value of Blue. */ + private transient JLabel bFull; + + /** The point that is displayed in the gradient image. + * Package-private to avoid an accessor method. + */ + transient Point gradientPoint = new Point(); + + /** + * This indicates that the change to the slider or point is triggered + * internally. + * This is package-private to avoid an accessor method. + */ + transient boolean internalChange = false; + + /** This indicates that the change to the spinner is triggered + * internally. + * This is package-private to avoid an accessor method. */ + transient boolean spinnerTrigger = false; + + /** This int identifies which spinner is currently locked. + * This is package-private to avoid an accessor method. */ + transient int locked = -1; + + /** This value indicates that the Hue spinner is locked. */ + static final int HLOCKED = 0; + + /** This value indicates that the Saturation spinner is locked. */ + static final int SLOCKED = 1; + + /** This value indicates that the Brightness spinner is locked. */ + static final int BLOCKED = 2; + + /** + * This method indicates that the mouse event is in the process of being + * handled. + * This is package-private to avoid an accessor method. + */ + transient boolean handlingMouse; + + /** + * This helper class handles mouse events on the gradient image. + */ + class MainGradientMouseListener extends MouseAdapter + implements MouseMotionListener + { + /** + * This method is called when the mouse is pressed over the gradient + * image. The JColorChooser is then updated with new HSB values. + * + * @param e The MouseEvent. + */ + public void mousePressed(MouseEvent e) + { + gradientPoint = e.getPoint(); + update(e.getPoint()); + } + + /** + * This method is called when the mouse is dragged over the gradient + * image. The JColorChooser is then updated with the new HSB values. + * + * @param e The MouseEvent. + */ + public void mouseDragged(MouseEvent e) + { + Point p = e.getPoint(); + if (p.x < 0 || p.y < 0 || p.y > imgHeight || p.x > imgWidth) + return; + + gradientPoint = p; + update(p); + } + + /** + * This method is called when the mouse is moved over the gradient image. + * + * @param e The MouseEvent. + */ + public void mouseMoved(MouseEvent e) + { + // Do nothing. + } + + /** + * This method updates the JColorChooser with the new values. + * + * @param p The Point where the MouseEvent occurred. + */ + private void update(Point p) + { + handlingMouse = true; + if (hSpinner.isEnabled()) + updateH(p); + else if (sSpinner.isEnabled()) + updateS(p); + else + updateB(p); + handlingMouse = false; + } + + /** + * This method updates the SB values if Hue is locked. + * + * @param p The point where the MouseEvent occurred. + */ + private void updateH(Point p) + { + float s = (imgWidth - p.x * 1f) / imgWidth; + float b = (imgHeight - p.y * 1f) / imgHeight; + + // Avoid two changes to the model by changing internalChange to true. + internalChange = true; + sSpinner.setValue(new Integer((int) (s * 100))); + internalChange = false; + bSpinner.setValue(new Integer((int) (b * 100))); + + revalidate(); + } + + /** + * This method updates the HB values if Saturation is locked. + * + * @param p The point where the MouseEvent occurred. + */ + private void updateS(Point p) + { + float h = p.x * 1f / imgWidth; + float b = (imgHeight - p.y * 1f) / imgHeight; + + internalChange = true; + hSpinner.setValue(new Integer((int) (h * 365))); + internalChange = false; + bSpinner.setValue(new Integer((int) (b * 100))); + + revalidate(); + } + + /** + * This method updates the HS values if Brightness is locked. + * + * @param p The point where the MouseEvent occurred. + */ + private void updateB(Point p) + { + float h = p.x * 1f / imgWidth; + float s = (imgHeight - p.y * 1f) / imgHeight; + + internalChange = true; + hSpinner.setValue(new Integer((int) (h * 365))); + internalChange = false; + sSpinner.setValue(new Integer((int) (s * 100))); + + revalidate(); + } + } + + /** + * This method listens for slider value changes. + */ + class SliderChangeListener implements ChangeListener + { + /** + * This method is called when the slider value changes. It should change + * the color of the JColorChooser. + * + * @param e The ChangeEvent. + */ + public void stateChanged(ChangeEvent e) + { + if (internalChange) + return; + + Integer value = new Integer(slider.getValue()); + + switch (locked) + { + case HLOCKED: + hSpinner.setValue(value); + break; + case SLOCKED: + sSpinner.setValue(value); + break; + case BLOCKED: + bSpinner.setValue(value); + break; + } + } + } + + /** + * This helper class determines the active JSpinner. + */ + class RadioStateListener implements ChangeListener + { + /** + * This method is called when there is a new JRadioButton that was + * selected. As a result, it should activate the associated JSpinner. + * + * @param e The ChangeEvent. + */ + public void stateChanged(ChangeEvent e) + { + JSpinner change; + if (e.getSource() == hRadio) + { + locked = HLOCKED; + change = hSpinner; + } + else if (e.getSource() == sRadio) + { + locked = SLOCKED; + change = sSpinner; + } + else + { + locked = BLOCKED; + change = bSpinner; + } + + change.setEnabled(((AbstractButton) e.getSource()).isSelected()); + updateSlider(); + updateTrack(); + updateImage(); + repaint(); + } + } + + /** + * This class listens to the JSpinners for changes. + */ + class ImageScrollListener implements ChangeListener + { + /** + * This method is called whenever one of the JSpinner values change. The + * JColorChooser should be updated with the new HSB values. + * + * @param e The ChangeEvent. + */ + public void stateChanged(ChangeEvent e) + { + if (internalChange) + return; + + float h = ((Number) hSpinner.getValue()).intValue() / 360f; + float s = ((Number) sSpinner.getValue()).intValue() / 100f; + float b = ((Number) bSpinner.getValue()).intValue() / 100f; + + spinnerTrigger = true; + getColorSelectionModel().setSelectedColor(new Color(Color.HSBtoRGB(h, s, + b))); + spinnerTrigger = false; + + if (! handlingMouse && slider != null && ! slider.getValueIsAdjusting()) + { + updateImage(); + updateTrack(); + } + repaint(); + } + } + + /** + * Creates a new DefaultHSBChooserPanel object. + */ + DefaultHSBChooserPanel() + { + super(); + } + + /** + * This method returns the name displayed by the JColorChooser tab that + * holds this panel. + * + * @return The name displayed in the JColorChooser tab. + */ + public String getDisplayName() + { + return "HSB"; + } + + /** + * This method updates the various components inside the HSBPanel (the + * JSpinners, the JSlider, and the gradient image point) with updated + * values when the JColorChooser color value changes. + */ + public void updateChooser() + { + Color c = getColorSelectionModel().getSelectedColor(); + + float[] hsbVals = Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), + null); + + internalChange = true; + + if (! spinnerTrigger) + { + hSpinner.setValue(new Integer((int) (hsbVals[0] * 360))); + sSpinner.setValue(new Integer((int) (hsbVals[1] * 100))); + bSpinner.setValue(new Integer((int) (hsbVals[2] * 100))); + } + + switch (locked) + { + case HLOCKED: + if (slider != null) + 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; + } +} |