1 /*
2 *
3 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * - Neither the name of Oracle nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
21 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 package java2d.demos.Fonts;
33
34
35 import static java.awt.Color.BLACK;
36 import static java.awt.Color.GRAY;
37 import static java.awt.Color.WHITE;
38 import java.awt.Component;
39 import java.awt.Dimension;
40 import java.awt.Font;
41 import java.awt.FontMetrics;
42 import java.awt.Graphics2D;
43 import java.awt.GraphicsEnvironment;
44 import java.awt.event.ActionEvent;
45 import java.awt.event.ActionListener;
46 import java.util.ArrayList;
47 import java.util.List;
48 import java2d.AnimatingControlsSurface;
49 import java2d.CustomControls;
50 import javax.swing.JMenu;
51 import javax.swing.JMenuBar;
52 import javax.swing.JMenuItem;
53 import javax.swing.JSlider;
54 import javax.swing.SwingConstants;
55 import javax.swing.border.EtchedBorder;
56 import javax.swing.event.ChangeEvent;
57 import javax.swing.event.ChangeListener;
58
59
60 /**
61 * Scrolling text of fonts returned from GraphicsEnvironment.getAllFonts().
62 */
63 @SuppressWarnings("serial")
64 public class AllFonts extends AnimatingControlsSurface {
65
66 private static final List<Font> fonts = new ArrayList<Font>();
67
68 static {
69 GraphicsEnvironment ge =
70 GraphicsEnvironment.getLocalGraphicsEnvironment();
71 for (Font font : ge.getAllFonts()) {
72 if (font.canDisplayUpTo(font.getName()) != 0) {
73 fonts.add(font);
74 }
75 }
76 }
77 private int nStrs;
78 private int strH;
79 private int fi;
80 protected int fsize = 14;
81 protected List<Font> v = new ArrayList<Font>();
82
83 public AllFonts() {
84 setBackground(WHITE);
85 setSleepAmount(500);
86 setControls(new Component[] { new DemoControls(this) });
87 }
88
89 public void handleThread(int state) {
90 }
91
92 @Override
93 public void reset(int w, int h) {
94 v.clear();
95 Font f = fonts.get(0).deriveFont(Font.PLAIN, fsize);
96 FontMetrics fm = getFontMetrics(f);
97 strH = (fm.getAscent() + fm.getDescent());
98 nStrs = h / strH + 1;
99 fi = 0;
100 }
101
102 @Override
103 public void step(int w, int h) {
104 if (fi < fonts.size()) {
105 v.add(fonts.get(fi).deriveFont(Font.PLAIN, fsize));
106 }
107 if (v.size() == nStrs && !v.isEmpty() || fi > fonts.size()) {
108 v.remove(0);
109 }
110 fi = v.isEmpty() ? 0 : ++fi;
111 }
112
113 @Override
114 public void render(int w, int h, Graphics2D g2) {
115
116 g2.setColor(BLACK);
117
118 int yy = (fi >= fonts.size()) ? 0 : h - v.size() * strH - strH / 2;
119
120 for (int i = 0; i < v.size(); i++) {
121 Font f = v.get(i);
122 int sw = getFontMetrics(f).stringWidth(f.getName());
123 g2.setFont(f);
124 g2.drawString(f.getName(), (w / 2 - sw / 2), yy += strH);
125 }
126 }
127
128 public static void main(String[] argv) {
129 createDemoFrame(new AllFonts());
130 }
131
132
133 static class DemoControls extends CustomControls implements ActionListener,
134 ChangeListener {
135
136 AllFonts demo;
137 JSlider slider;
138 int[] fsize = { 8, 14, 18, 24 };
139 JMenuItem[] menuitem = new JMenuItem[fsize.length];
140 Font[] font = new Font[fsize.length];
141
142 @SuppressWarnings("LeakingThisInConstructor")
143 public DemoControls(AllFonts demo) {
144 this.demo = demo;
145 setBackground(GRAY);
146
147 int sleepAmount = (int) demo.getSleepAmount();
148 slider = new JSlider(SwingConstants.HORIZONTAL, 0, 999, sleepAmount);
149 slider.setBorder(new EtchedBorder());
150 slider.setPreferredSize(new Dimension(90, 22));
151 slider.addChangeListener(this);
152 add(slider);
153 JMenuBar menubar = new JMenuBar();
154 add(menubar);
155 JMenu menu = menubar.add(new JMenu("Font Size"));
156 for (int i = 0; i < fsize.length; i++) {
157 font[i] = new Font(Font.SERIF, Font.PLAIN, fsize[i]);
158 menuitem[i] = menu.add(new JMenuItem(String.valueOf(fsize[i])));
159 menuitem[i].setFont(font[i]);
160 menuitem[i].addActionListener(this);
161 }
162 }
163
164 @Override
165 public void actionPerformed(ActionEvent e) {
166 for (int i = 0; i < fsize.length; i++) {
167 if (e.getSource().equals(menuitem[i])) {
168 demo.fsize = fsize[i];
169 Dimension d = demo.getSize();
170 demo.reset(d.width, d.height);
171 break;
172 }
173 }
174 }
175
176 @Override
177 public void stateChanged(ChangeEvent e) {
178 demo.setSleepAmount(slider.getValue());
179 }
180 }
181 }