Application: gvSIG desktop

 * This program 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 3 of the License, or (at your option) any later

 * version.

 * This program 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

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

    private static final Logger logger = LoggerFactory.getLogger(ColorChooserPanel.class);

    private GridBagLayout gridBagLayout1 = new GridBagLayout();

    private JButton changeButton = new JButton();

    private Dimension dim2 = new Dimension(dim.width, dim.height * 2 + 5);

    private boolean withNoFill;

    private JSlider sldTransparency;

    private JLabel lblTransparency;

    private boolean muteSldTransparency = false;

    private double perc = 0.392156863;/*100/255*/

    private ChangeListener sldAction = new ChangeListener() {

        public void stateChanged(ChangeEvent e) {

            if (!muteSldTransparency) {

                int alphaValue = sldTransparency.getValue();

                setAlpha(alphaValue);

                if (withTranspPerc) {

                    int percValue = (int) (alphaValue * perc);

                    lblTransparency.setText(String.valueOf(percValue) + "%");

                }

                fireActionPerformed();

            }

        }

    };

     * Constructor method

     *

     * @param withTransparencySlider boolean that specifies if the user wants a

     * slider with the color chooser panel to control the transparency of the

     * selected color.Also, it will appear a text which specifies the

     * transparency percentage.

     * @param withNoFill boolean that specifies if the color chooser panel

     * allows a null value for the color selected (true case). If this values is

     * false, when the color selected is null then black color is assigned

     * automatically.

     */

        this(withTransparencySlider, false);

    /**

     * Constructor method

     *

     * @param withTransparencySlider boolean that specifies if the user wants a

     * slider with the color chooser panel to control the transparency of the

     * selected color.

     * @param withNoFill boolean that specifies if the color chooser panel

     * allows a null value for the color selected (true case). If this values is

     * false, when the color selected is null then black color is assigned

     * automatically.

     */

    public ColorChooserPanel(boolean withTransparencySlider, boolean withNoFill) {

        this.withTransp = withTransparencySlider;

        this.withTranspPerc = withTransparencySlider;

        this.withNoFill = withNoFill;

        try {

            if (withTransp) {

                sldTransparency = new JSlider(0, 255);

                sldTransparency.addChangeListener(sldAction);

                int width = withNoFill ? dim2.width - 40 : dim2.width;

                sldTransparency.setPreferredSize(new Dimension(width - 5, dim2.height / 2));

                sldTransparency.setToolTipText(Messages.getText("transparencia"));

                if (withTranspPerc) {

                    lblTransparency = new JLabel();

                    int percValue = (int) (sldTransparency.getValue() * perc);

                    lblTransparency.setText(String.valueOf(percValue) + "%");

                    lblTransparency.setPreferredSize(new Dimension(40, 20));

                }

                sldTransparency.setValue(255);

            }

            jbInit();

            colorPanel.setLineColor(null);

            changeButton.setToolTipText(Messages.getText("browse"));

        } catch (Exception e) {

            logger.warn("Can't create ColorChooserPanel",e);

        }

    }

    private void jbInit() throws Exception {

        JPanel pane = new JPanel(new GridBagLayout());

        GridBagConstraints c = new GridBagConstraints();

        changeButton.setText("...");

        changeButton.addActionListener(new java.awt.event.ActionListener() {

            public void actionPerformed(ActionEvent e) {

                changeButton_actionPerformed(e);

            }

        });

        outerColorPanel.setBorder(BorderFactory.createLoweredBevelBorder());

        outerColorPanel.setPreferredSize(new Dimension(dim.width / 2, dim.height));

        outerColorPanel.setBackground(Color.white);

        c.fill = GridBagConstraints.HORIZONTAL;

        c.gridx = 1;

        c.gridy = 0;

        c.gridwidth = 2;

        pane.add(outerColorPanel, c);

        c.fill = GridBagConstraints.HORIZONTAL;

        c.gridx = 3;

        c.gridy = 0;

        c.gridwidth = 1;

        pane.add(changeButton, c);

        outerColorPanel.add(colorPanel);

        if (withNoFill) {

            chkUseColor = new JCheckBox();

            chkUseColor.setSelected(true);

            c.fill = GridBagConstraints.HORIZONTAL;

            c.gridwidth = 1;

            c.gridx = 0;

            c.gridy = 1;

            chkUseColor.addActionListener(new java.awt.event.ActionListener() {

                public void actionPerformed(ActionEvent e) {

                    useColor_actionPerformed(e);

                }

            });

            pane.add(chkUseColor, c);

        }

        if (withTransp) {

            c.fill = GridBagConstraints.HORIZONTAL;

            c.gridwidth = 3;

            c.gridx = 1;

            c.gridy = 1;

            pane.add(sldTransparency, c);

            if (withTranspPerc) {

                c.fill = GridBagConstraints.HORIZONTAL;

                c.gridwidth = 3;

                c.gridx = 4;

                c.gridy = 1;

                pane.add(lblTransparency, c);

            }

        }

        add(pane);

    }

        Color newColor = JColorChooser.showDialog(SwingUtilities.windowForComponent(this), Messages.getText("choose_color"), color);

     * Returns true if the check box of the color chooser panel is selected.

     * False otherwise.

     *

     * @return boolean true if the check box is selected. Otherwise, false.

     */

    public boolean getUseColorisSelected() {

        try {

            if (withNoFill) {

                return chkUseColor.isSelected();

            }

            return false;

        } catch (Exception ex) {

            logger.warn("Can't get use-selected-color, return false.",ex);

            return false;

        }

    }

    /**

     * Sets the check box of the color chooser panel

     *

     * @param b boolean true if the user wants to select it.Otherwise, false.

     */

    public void setUseColorIsSelected(boolean b) {

        if (withNoFill) {

            chkUseColor.setSelected(b);

        }

    }

    /**

     * Controls the events when the check box of the color chooser panel is

     * modified

     *

     * @param e Action Event

     */

    private void useColor_actionPerformed(ActionEvent e) {

        if (chkUseColor.isSelected()) {

            setColor(color);

        } else {

            setColor(null);

        }

        fireActionPerformed();

    }

    public void addActionListener(ActionListener l) {

    /**

     * Sets the color of the chooser panel.

     *

     * @param color Color to be selected.

     */

    public void setColor(Color color) {

        if (color != null) {

            this.color = color;

            setAlpha(color.getAlpha());

            updateColorPanel();

        }

    }

    /**

     * Sets the alpha value of the color selected in the color chooser panel.

     *

     * @param alpha Alpha value of the color.

     */

    public void setAlpha(int alpha) {

        muteSldTransparency = true;

        if (color != null) {

            color = alphaColor(color, alpha);

        }

        if (withTransp) {

            sldTransparency.setValue(alpha);

            sldTransparency.validate();

            int percValue = (int) (alpha * perc);

            lblTransparency.setText(String.valueOf(percValue) + "%");

        }

        updateColorPanel();

        muteSldTransparency = false;

    }

    public int getAlpha() {

        try {

            if (withTransp) {

                return sldTransparency.getValue();

            } else {

                return color.getAlpha();

            }

        } catch (Exception ex) {

            logger.warn("Can't get alpha, return 0 as alpha",ex);

            return 0;

        }

    }

    /**

     * Obtains the selected color in the color chooser panel.

     *

     * @return color the selected color

     */

    public Color getColor() {

        return color;

    }

    public void disabledWithTransparency() {

        changeButton.setEnabled(false);

        if (withNoFill) {

            chkUseColor.setEnabled(false);

        }

    }

    @Override

    public void setEnabled(boolean newEnabled) {

        changeButton.setEnabled(newEnabled);

        if (withTransp) {

            sldTransparency.setEnabled(newEnabled);

        }

        if (withTranspPerc) {

            lblTransparency.setEnabled(newEnabled);

        }

        if (withNoFill) {

            chkUseColor.setEnabled(newEnabled);

        }

    }

    public static void main(String[] args) {

        JFrame f = new JFrame();

        final ColorChooserPanel ce2 = new ColorChooserPanel(true, true);

        JPanel content = new JPanel(new GridLayout(2, 1));

        content.add(ce2);

        f.setContentPane(content);

        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        f.pack();

        f.setVisible(true);

    }

                alpha);

}