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jfreechart example source code file (SWTAxisEditor.java)

This example jfreechart source code file (SWTAxisEditor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, button, button, filllayout, font, font, fontdata, fontdialog, group, label, label, swtaxiseditor, tabfolder, text, text, util

The jfreechart SWTAxisEditor.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------------
 * SWTAxisEditor.java
 * ------------------
 * (C) Copyright 2006-2008, by Henry Proudhon and Contributors.
 *
 * Original Author:  Henry Proudhon (henry.proudhon AT ensmp.fr);
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * Changes
 * -------
 * 01-Aug-2006 : New class (HP);
 * 07-Feb-2007 : Fixed bug 1647749, handle null axis labels (DG);
 * 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
 *               Jess Thrysoee (DG);
 *
 */

package org.jfree.experimental.chart.swt.editor;

import java.awt.Paint;
import java.util.ResourceBundle;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ColorDialog;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.FontDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.swt.widgets.Text;
import org.jfree.chart.axis.Axis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.util.ResourceBundleWrapper;
import org.jfree.experimental.swt.SWTPaintCanvas;
import org.jfree.experimental.swt.SWTUtils;

/**
 * An editor for axis properties.
 */
class SWTAxisEditor extends Composite {

    /** The axis label. */
    private Text label;

    /** The font used to draw the axis labels. */
    private FontData labelFont;

    /** The paint (color) used to draw the axis labels. */
    private Color labelPaintColor;

    /** The font used to draw the axis tick labels. */
    private FontData tickLabelFont;

    /** The paint (color) used to draw the axis tick labels. */
    private Color tickLabelPaintColor;

    /** A field showing a description of the label font. */
    private Text labelFontField;

    /**
     * A field containing a description of the font
     * for displaying tick labels on the axis.
     */
    private Text tickLabelFontField;

    /** The resourceBundle for the localization. */
    protected static ResourceBundle localizationResources
            =  ResourceBundleWrapper.getBundle(
                    "org.jfree.chart.editor.LocalizationBundle");

    /** Font object used to handle a change of font. */
    private Font font;

    /** A flag that indicates whether or not the tick labels are visible. */
    private Button showTickLabelsCheckBox;

    /** A flag that indicates whether or not the tick marks are visible. */
    private Button showTickMarksCheckBox;

    /** A tabbed pane for... */
    private TabFolder otherTabs;

    /**
     * Standard constructor: builds a composite for displaying/editing
     * the properties of the specified axis.
     *
     * @param parent The parent composite.
     * @param style The SWT style of the SwtAxisEditor.
     * @param axis  the axis whose properties are to be displayed/edited
     *              in the composite.
     */
    public SWTAxisEditor(Composite parent, int style, Axis axis) {
        super(parent, style);
        this.labelFont = SWTUtils.toSwtFontData(getDisplay(),
                axis.getLabelFont(), true);
        this.labelPaintColor = SWTUtils.toSwtColor(getDisplay(),
                axis.getLabelPaint());
        this.tickLabelFont = SWTUtils.toSwtFontData(getDisplay(),
                axis.getTickLabelFont(), true);
        this.tickLabelPaintColor = SWTUtils.toSwtColor(getDisplay(),
                axis.getTickLabelPaint());

        FillLayout layout = new FillLayout(SWT.VERTICAL);
        layout.marginHeight = layout.marginWidth = 4;
        setLayout(layout);
        Group general = new Group(this, SWT.NONE);
        general.setLayout(new GridLayout(3, false));
        general.setText(localizationResources.getString("General"));
        // row 1
        new Label(general, SWT.NONE).setText(localizationResources.getString(
                "Label"));
        this.label = new Text(general, SWT.BORDER);
        if (axis.getLabel() != null) {
            this.label.setText(axis.getLabel());
        }
        this.label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
                false));
        new Label(general, SWT.NONE).setText(""); //empty cell
        // row 2
        new Label(general, SWT.NONE).setText(localizationResources.getString(
                "Font"));
        this.labelFontField = new Text(general, SWT.BORDER);
        this.labelFontField.setText(this.labelFont.toString());
        this.labelFontField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER,
                true, false));
        Button selectFontButton = new Button(general, SWT.PUSH);
        selectFontButton.setText(localizationResources.getString("Select..."));
        selectFontButton.addSelectionListener(
                new SelectionAdapter() {
                    public void widgetSelected(SelectionEvent event) {
                        // Create the color-change dialog
                        FontDialog dlg = new FontDialog(getShell());
                        dlg.setText(localizationResources.getString(
                                "Font_Selection"));
                        dlg.setFontList(new FontData[] {
                                SWTAxisEditor.this.labelFont });
                        if (dlg.open() != null) {
                            // Dispose of any fonts we have created
                            if (SWTAxisEditor.this.font != null) {
                                SWTAxisEditor.this.font.dispose();
                            }
                            // Create the new font and set it into the title
                            // label
                            SWTAxisEditor.this.font = new Font(
                                    getShell().getDisplay(), dlg.getFontList());
                            //label.setFont(font);
                            SWTAxisEditor.this.labelFontField.setText(
                                    SWTAxisEditor.this.font.getFontData()[0]
                                    .toString());
                            SWTAxisEditor.this.labelFont
                                    = SWTAxisEditor.this.font.getFontData()[0];
                        }
                    }
                }
        );
        // row 3
        new Label(general, SWT.NONE).setText(localizationResources.getString(
                "Paint"));
        // Use a colored text field to show the color
        final SWTPaintCanvas colorCanvas = new SWTPaintCanvas(general,
                SWT.NONE, this.labelPaintColor);
        GridData canvasGridData = new GridData(SWT.FILL, SWT.CENTER, true,
                false);
        canvasGridData.heightHint = 20;
        colorCanvas.setLayoutData(canvasGridData);
        Button selectColorButton = new Button(general, SWT.PUSH);
        selectColorButton.setText(localizationResources.getString("Select..."));
        selectColorButton.addSelectionListener(
                new SelectionAdapter() {
                    public void widgetSelected(SelectionEvent event) {
                        // Create the color-change dialog
                        ColorDialog dlg = new ColorDialog(getShell());
                        dlg.setText(localizationResources.getString(
                                "Title_Color"));
                        dlg.setRGB(SWTAxisEditor.this.labelPaintColor.getRGB());
                        RGB rgb = dlg.open();
                        if (rgb != null) {
                          // create the new color and set it to the
                          // SwtPaintCanvas
                            SWTAxisEditor.this.labelPaintColor = new Color(
                                    getDisplay(), rgb);
                            colorCanvas.setColor(
                                    SWTAxisEditor.this.labelPaintColor);
                        }
                    }
                }
        );
        Group other = new Group(this, SWT.NONE);
        FillLayout tabLayout = new FillLayout();
        tabLayout.marginHeight = tabLayout.marginWidth = 4;
        other.setLayout(tabLayout);
        other.setText(localizationResources.getString("Other"));

        this.otherTabs = new TabFolder(other, SWT.NONE);
        TabItem item1 = new TabItem(this.otherTabs, SWT.NONE);
        item1.setText(" " + localizationResources.getString("Ticks") + " ");
        Composite ticks = new Composite(this.otherTabs, SWT.NONE);
        ticks.setLayout(new GridLayout(3, false));
        this.showTickLabelsCheckBox = new Button(ticks, SWT.CHECK);
        this.showTickLabelsCheckBox.setText(localizationResources.getString(
                "Show_tick_labels"));
        this.showTickLabelsCheckBox.setSelection(axis.isTickLabelsVisible());
        this.showTickLabelsCheckBox.setLayoutData(new GridData(SWT.FILL,
                SWT.CENTER, true, false, 3, 1));
        new Label(ticks, SWT.NONE).setText(localizationResources.getString(
                "Tick_label_font"));
        this.tickLabelFontField = new Text(ticks, SWT.BORDER);
        this.tickLabelFontField.setText(this.tickLabelFont.toString());
        //tickLabelFontField.setFont(SwtUtils.toSwtFontData(getDisplay(),
        // axis.getTickLabelFont()));
        this.tickLabelFontField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER,
                true, false));
        Button selectTickLabelFontButton = new Button(ticks, SWT.PUSH);
        selectTickLabelFontButton.setText(localizationResources.getString(
                "Select..."));
        selectTickLabelFontButton.addSelectionListener(
                new SelectionAdapter() {
                    public void widgetSelected(SelectionEvent event) {
                        // Create the font-change dialog
                        FontDialog dlg = new FontDialog(getShell());
                        dlg.setText(localizationResources.getString(
                                "Font_Selection"));
                        dlg.setFontList(new FontData[] {
                                SWTAxisEditor.this.tickLabelFont});
                        if (dlg.open() != null) {
                            // Dispose of any fonts we have created
                            if (SWTAxisEditor.this.font != null) {
                                SWTAxisEditor.this.font.dispose();
                            }
                            // Create the new font and set it into the title
                            // label
                            SWTAxisEditor.this.font = new Font(
                                    getShell().getDisplay(), dlg.getFontList());
                            //tickLabelFontField.setFont(font);
                            SWTAxisEditor.this.tickLabelFontField.setText(
                                    SWTAxisEditor.this.font.getFontData()[0]
                                    .toString());
                            SWTAxisEditor.this.tickLabelFont
                                    = SWTAxisEditor.this.font.getFontData()[0];
                        }
                    }
                }
        );
        this.showTickMarksCheckBox = new Button(ticks, SWT.CHECK);
        this.showTickMarksCheckBox.setText(localizationResources.getString(
                "Show_tick_marks"));
        this.showTickMarksCheckBox.setSelection(axis.isTickMarksVisible());
        this.showTickMarksCheckBox.setLayoutData(new GridData(SWT.FILL,
                SWT.CENTER, true, false, 3, 1));
        item1.setControl(ticks);
    }

    /**
     * A static method that returns a panel that is appropriate
     * for the axis type.
     *
     * @param parent  the parent.
     * @param style  the style.
     * @param axis  the axis whose properties are to be displayed/edited
     *              in the composite.
     * @return A composite or <code>nullnull.
     */
    public static SWTAxisEditor getInstance(Composite parent, int style,
            Axis axis) {

        if (axis != null) {
            // return the appropriate axis editor
            if (axis instanceof NumberAxis)
                return new SWTNumberAxisEditor(parent, style,
                        (NumberAxis) axis);
            else return new SWTAxisEditor(parent, style, axis);
        }
        else return null;
    }

    /**
     * Returns a reference to the tabbed composite.
     *
     * @return A reference to the tabbed composite.
     */
    public TabFolder getOtherTabs() {
        return this.otherTabs;
    }

    /**
     * Returns the current axis label.
     *
     * @return The current axis label.
     */
    public String getLabel() {
        return this.label.getText();
    }

    /**
     * Returns the current label font.
     *
     * @return The current label font.
     */
    public java.awt.Font getLabelFont() {
        return SWTUtils.toAwtFont(getDisplay(), this.labelFont, true);
    }

    /**
     * Returns the current label paint.
     *
     * @return The current label paint.
     */
    public Paint getTickLabelPaint() {
        return SWTUtils.toAwtColor(this.tickLabelPaintColor);
    }

    /**
     * Returns the current label font.
     *
     * @return The current label font.
     */
    public java.awt.Font getTickLabelFont() {
        return SWTUtils.toAwtFont(getDisplay(), this.tickLabelFont, true);
    }

    /**
     * Returns the current label paint.
     *
     * @return The current label paint.
     */
    public Paint getLabelPaint() {
        return SWTUtils.toAwtColor(this.labelPaintColor);
    }

    /**
     * Sets the properties of the specified axis to match
     * the properties defined on this panel.
     *
     * @param axis  the axis.
     */
    public void setAxisProperties(Axis axis) {
        axis.setLabel(getLabel());
        axis.setLabelFont(getLabelFont());
        axis.setLabelPaint(getLabelPaint());
        axis.setTickMarksVisible(this.showTickMarksCheckBox.getSelection());
        axis.setTickLabelsVisible(this.showTickLabelsCheckBox.getSelection());
        axis.setTickLabelFont(getTickLabelFont());
        axis.setTickLabelPaint(getTickLabelPaint());
    }
}

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