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+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Sun Microsystems nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package jake2;
+
+import java.applet.*;
+import java.awt.Canvas;
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.event.*;
+import java.awt.font.*;
+import java.awt.geom.*;
+import java.net.*;
+import java.text.*;
+import java.util.*;
+
+/**
+ * An applet to smooth the adoption of newer applet content which runs
+ * only with the new Java Plug-In: in particular, applets launched via
+ * JNLP. It displays some informative text; clicking on the text will
+ * open a new browser window pointing to the download page for the new
+ * Java Plug-In. This applet runs even on very early versions of the
+ * JRE and can be referenced from the applet tag's code / archive
+ * attributes while the jnlp_href can point to the new-style applet's
+ * code.
+ * <P>
+ * In 6u10 build 13, it is necessary to copy this applet's source code
+ * and rename it to be exactly the same class name as is in the
+ * main-class attribute in the JNLP file, preferably referenced via
+ * the archive attribute in a jar named something like
+ * "BackwardCompatibility.jar". In 6u10 build 14, the applet tag may
+ * refer to this class via its code attribute, and the JNLP file may
+ * point to an entirely different class name, allowing one copy of the
+ * compatibility applet to be used for many different JNLP-launched
+ * applets.
+ * <P>
+ * Parameters supported:
+ * <P>
+ * <CODE>compat_fontsize</CODE> - the font size used to draw the text.<BR>
+ * <CODE>compat_fgcolor</CODE> - the color used to draw the text.<BR>
+ * <CODE>compat_bgcolor</CODE> - the color used to draw the text.
+ *
+ * @author Kenneth Russell
+ */
+
+public class CompatibilityApplet extends java.applet.Applet {
+ private Font font;
+ private static final String inputText = "Click here to get the new Java Plug-In";
+ private static final String url = "https://jdk6.dev.java.net/6uNea.html";
+
+ public void init() {
+ int fontSize = 36;
+ try {
+ fontSize = Integer.parseInt(getParameter("compat_fontsize"));
+ } catch (Exception e) {
+ }
+ Color fgColor = Color.black;
+ Color bgColor = Color.white;
+ try {
+ fgColor = Color.decode(getParameter("compat_fgcolor"));
+ } catch (Exception e) {
+ }
+ try {
+ bgColor = Color.decode(getParameter("compat_bgcolor"));
+ } catch (Exception e) {
+ }
+ font = new Font("SansSerif", Font.PLAIN, fontSize);
+ setForeground(fgColor);
+ setBackground(bgColor);
+ addMouseListener(new MouseAdapter() {
+ public void mouseClicked(MouseEvent e) {
+ try {
+ getAppletContext().showDocument(new URL(url), "_blank");
+ } catch (Exception ex) {
+ }
+ }
+ });
+ }
+
+ static class LineInfo {
+ String text;
+ float width;
+ float height;
+
+ LineInfo(String text, float width, float height) {
+ this.text = text;
+ this.width = width;
+ this.height = height;
+ }
+ }
+
+ public void paint(Graphics graphics) {
+ Graphics2D g = (Graphics2D) graphics;
+ List/*<LineInfo>*/ lines = new ArrayList();
+ FontMetrics fm = g.getFontMetrics();
+ FontRenderContext frc = g.getFontRenderContext();
+ Map attrs = new HashMap();
+ attrs.put(TextAttribute.FONT, font);
+ float totalHeight = 0;
+ int curPos = 0;
+ AttributedString str = new AttributedString(inputText, attrs);
+ LineBreakMeasurer measurer = new LineBreakMeasurer(str.getIterator(), frc);
+ while (measurer.getPosition() < inputText.length()) {
+ // Give us a few pixels inset from the edges
+ int nextPos = measurer.nextOffset(getWidth() - 10);
+ String line = inputText.substring(curPos, nextPos);
+ GlyphVector gv = font.createGlyphVector(frc, line);
+ Rectangle2D bounds = gv.getVisualBounds();
+ float height = (float) bounds.getHeight() + 5;
+ lines.add(new LineInfo(line, (float) bounds.getWidth(), height));
+ totalHeight += height;
+ curPos = nextPos;
+ measurer.setPosition(curPos);
+ }
+ // Draw the strings centered vertically and horizontally in this component
+ g.setFont(font);
+ float curY = (getHeight() - totalHeight) / 2;
+ for (Iterator iter = lines.iterator(); iter.hasNext(); ) {
+ LineInfo line = (LineInfo) iter.next();
+ curY += line.height;
+ float x = (getWidth() - line.width) / 2;
+ g.drawString(line.text, (int) x, (int) curY);
+ }
+ }
+}