/*
* @(#)Highlighting.java 1.21 00/03/15
*
* Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
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*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
package demos.Fonts;
import java.awt.*;
import java.awt.event.*;
import java.awt.font.TextLayout;
import java.awt.font.TextHitInfo;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.geom.AffineTransform;
import AnimatingSurface;
/**
* Highlighting of text showing the caret, the highlight & the character
* advances.
*/
public class Highlighting extends AnimatingSurface {
private static String text[] = { "HILIGHTING", "Java2D" };
private static Color colors[] = { Color.cyan, Color.lightGray };
private static Font smallF = new Font("Courier", Font.PLAIN, 8);
private int[] curPos;
private TextLayout[] layouts;
private Font[] fonts;
public Highlighting() {
setBackground(Color.white);
fonts = new Font[2];
layouts = new TextLayout[fonts.length];
curPos = new int[fonts.length];
}
public void reset(int w, int h) {
fonts[0] = new Font("Courier",Font.PLAIN,w/text[0].length()+8);
fonts[1] = new Font("serif", Font.BOLD,w/text[1].length());
for (int i = 0; i < layouts.length; i++ ) {
curPos[i] = 0;
}
}
public void step(int w, int h) {
setSleepAmount(900);
for (int i = 0; i < 2; i++) {
if (layouts[i] == null) {
continue;
}
if (curPos[i]++ == layouts[i].getCharacterCount()) {
curPos[i] = 0;
}
}
}
public void render(int w, int h, Graphics2D g2) {
FontRenderContext frc = g2.getFontRenderContext();
for (int i = 0; i < 2; i++) {
layouts[i] = new TextLayout(text[i], fonts[i], frc);
float rw = layouts[i].getAdvance();
float rh = layouts[i].getAscent() + layouts[i].getDescent();
float rx = (float) ((w - rw) /2);
float ry = (float) ((i == 0) ? h/3 : h * 0.75f);
// draw highlighted shape
Shape hilite = layouts[i].getLogicalHighlightShape(0, curPos[i]);
AffineTransform at = AffineTransform.getTranslateInstance(rx, ry);
hilite = at.createTransformedShape(hilite);
float hy = (float) hilite.getBounds2D().getY();
float hh = (float) hilite.getBounds2D().getHeight();
g2.setColor(colors[i]);
g2.fill(hilite);
// get caret shape
Shape[] shapes = layouts[i].getCaretShapes(curPos[i]);
Shape caret = at.createTransformedShape(shapes[0]);
g2.setColor(Color.black);
layouts[i].draw(g2, rx, ry);
g2.draw(caret);
g2.draw(new Rectangle2D.Float(rx,hy,rw,hh));
// Display character advances.
for (int j = 0; j <= layouts[i].getCharacterCount(); j++) {
float[] cInfo = layouts[i].getCaretInfo(TextHitInfo.leading(j));
String str = String.valueOf((int) cInfo[0]);
TextLayout tl = new TextLayout(str,smallF,frc);
tl.draw(g2, (float) rx+cInfo[0]-tl.getAdvance()/2, hy+hh+tl.getAscent()+1.0f);
}
}
}
public static void main(String argv[]) {
createDemoFrame(new Highlighting());
}
}
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