001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2021, by Object Refinery Limited and Contributors.
006 *
007 * Project Info:  http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
022 * USA.
023 *
024 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
025 * Other names may be trademarks of their respective owners.]
026 *
027 */
028
029package org.jfree.chart.ui;
030
031import java.awt.BorderLayout;
032import java.awt.Font;
033import java.awt.GraphicsEnvironment;
034import java.awt.GridLayout;
035import java.util.ResourceBundle;
036import javax.swing.BorderFactory;
037import javax.swing.JCheckBox;
038import javax.swing.JList;
039import javax.swing.JPanel;
040import javax.swing.JScrollPane;
041import javax.swing.ListModel;
042import org.jfree.chart.util.ResourceBundleWrapper;
043
044/**
045 * A panel for choosing a font from the available system fonts - still a bit of
046 * a hack at the moment, but good enough for demonstration applications.
047 */
048public class FontChooserPanel extends JPanel {
049
050    /** The font sizes that can be selected. */
051    public static final String[] SIZES = {"9", "10", "11", "12", "14", "16",
052            "18", "20", "22", "24", "28", "36", "48", "72"};
053
054    /** The list of fonts. */
055    private JList fontlist;
056
057    /** The list of sizes. */
058    private JList sizelist;
059
060    /** The checkbox that indicates whether the font is bold. */
061    private JCheckBox bold;
062
063    /** The checkbox that indicates whether or not the font is italic. */
064    private JCheckBox italic;
065
066    /** The resourceBundle for the localization. */
067    protected static ResourceBundle localizationResources =
068        ResourceBundleWrapper.getBundle("org.jfree.chart.ui.LocalizationBundle");
069
070    /**
071     * Standard constructor - builds a FontChooserPanel initialised with the
072     * specified font.
073     *
074     * @param font  the initial font to display.
075     */
076    public FontChooserPanel(Font font) {
077
078        final GraphicsEnvironment g
079                = GraphicsEnvironment.getLocalGraphicsEnvironment();
080        final String[] fonts = g.getAvailableFontFamilyNames();
081
082        setLayout(new BorderLayout());
083        final JPanel right = new JPanel(new BorderLayout());
084
085        final JPanel fontPanel = new JPanel(new BorderLayout());
086        fontPanel.setBorder(BorderFactory.createTitledBorder(
087                            BorderFactory.createEtchedBorder(),
088                            localizationResources.getString("Font")));
089        this.fontlist = new JList(fonts);
090        final JScrollPane fontpane = new JScrollPane(this.fontlist);
091        fontpane.setBorder(BorderFactory.createEtchedBorder());
092        fontPanel.add(fontpane);
093        add(fontPanel);
094
095        final JPanel sizePanel = new JPanel(new BorderLayout());
096        sizePanel.setBorder(BorderFactory.createTitledBorder(
097                            BorderFactory.createEtchedBorder(),
098                            localizationResources.getString("Size")));
099        this.sizelist = new JList(SIZES);
100        final JScrollPane sizepane = new JScrollPane(this.sizelist);
101        sizepane.setBorder(BorderFactory.createEtchedBorder());
102        sizePanel.add(sizepane);
103
104        final JPanel attributes = new JPanel(new GridLayout(1, 2));
105        this.bold = new JCheckBox(localizationResources.getString("Bold"));
106        this.italic = new JCheckBox(localizationResources.getString("Italic"));
107        attributes.add(this.bold);
108        attributes.add(this.italic);
109        attributes.setBorder(BorderFactory.createTitledBorder(
110                BorderFactory.createEtchedBorder(),
111                localizationResources.getString("Attributes")));
112
113        right.add(sizePanel, BorderLayout.CENTER);
114        right.add(attributes, BorderLayout.SOUTH);
115
116        add(right, BorderLayout.EAST);
117
118        setSelectedFont(font);
119    }
120
121    /**
122     * Returns a Font object representing the selection in the panel.
123     *
124     * @return the font.
125     */
126    public Font getSelectedFont() {
127        return new Font(getSelectedName(), getSelectedStyle(),
128                getSelectedSize());
129    }
130
131    /**
132     * Returns the selected name.
133     *
134     * @return the name.
135     */
136    public String getSelectedName() {
137        return (String) this.fontlist.getSelectedValue();
138    }
139
140    /**
141     * Returns the selected style.
142     *
143     * @return the style.
144     */
145    public int getSelectedStyle() {
146        if (this.bold.isSelected() && this.italic.isSelected()) {
147            return Font.BOLD + Font.ITALIC;
148        }
149        if (this.bold.isSelected()) {
150            return Font.BOLD;
151        }
152        if (this.italic.isSelected()) {
153            return Font.ITALIC;
154        }
155        else {
156            return Font.PLAIN;
157        }
158    }
159
160    /**
161     * Returns the selected size.
162     *
163     * @return the size.
164     */
165    public int getSelectedSize() {
166        final String selected = (String) this.sizelist.getSelectedValue();
167        if (selected != null) {
168            return Integer.parseInt(selected);
169        }
170        else {
171            return 10;
172        }
173    }
174
175    /**
176     * Initializes the contents of the dialog from the given font
177     * object.
178     *
179     * @param font the font from which to read the properties.
180     */
181    public void setSelectedFont (Font font) {
182        if (font == null) {
183            throw new NullPointerException();
184        }
185        this.bold.setSelected(font.isBold());
186        this.italic.setSelected(font.isItalic());
187
188        final String fontName = font.getName();
189        ListModel model = this.fontlist.getModel();
190        this.fontlist.clearSelection();
191        for (int i = 0; i < model.getSize(); i++) {
192            if (fontName.equals(model.getElementAt(i))) {
193                this.fontlist.setSelectedIndex(i);
194                break;
195            }
196        }
197
198        final String fontSize = String.valueOf(font.getSize());
199        model = this.sizelist.getModel();
200        this.sizelist.clearSelection();
201        for (int i = 0; i < model.getSize(); i++) {
202            if (fontSize.equals(model.getElementAt(i))) {
203                this.sizelist.setSelectedIndex(i);
204                break;
205            }
206        }
207    }
208}
209