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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.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
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);
}
}
}
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