1 /*
   2  * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6448405 6519513 6745225
  27  * @summary static HashMap cache in LineBreakMeasurer can grow wihout bounds
  28  * @run main/othervm/timeout=600 -client -Xms16m -Xmx16m FRCTest
  29  */
  30 import java.awt.*;
  31 import java.awt.image.*;
  32 import java.awt.font.*;
  33 import java.awt.geom.*;
  34 import java.text.*;
  35 import java.util.Hashtable;
  36 
  37 public class FRCTest {
  38 
  39     static AttributedString vanGogh = new AttributedString(
  40         "Many people believe that Vincent van Gogh painted his best works " +
  41         "during the two-year period he spent in Provence. Here is where he " +
  42         "painted The Starry Night--which some consider to be his greatest " +
  43         "work of all. However, as his artistic brilliance reached new " +
  44         "heights in Provence, his physical and mental health plummeted. ",
  45         new Hashtable());
  46 
  47     public static void main(String[] args) {
  48 
  49         // First test the behaviour of Graphics2D.getFontRenderContext();
  50         BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
  51         Graphics2D g2d = bi.createGraphics();
  52         AffineTransform g2dTx = new AffineTransform(2,0,2,0,1,1);
  53         g2d.setTransform(g2dTx);
  54         AffineTransform frcTx = g2d.getFontRenderContext().getTransform();
  55         AffineTransform frcExpected = new AffineTransform(2,0,2,0,0,0);
  56         if (!frcTx.equals(frcExpected)) {
  57             throw new RuntimeException("FRC Tx may have translate?");
  58         }
  59 
  60         // Now test that using different translates with LBM is OK
  61         // This test doesn't prove a lot since showing a leak really
  62         // requires a basher test that can run for a long time.
  63         for (int x=0;x<100;x++) {
  64             for (int y=0;y<100;y++) {
  65                 AttributedCharacterIterator aci = vanGogh.getIterator();
  66                 AffineTransform tx = AffineTransform.getTranslateInstance(x, y);
  67                 FontRenderContext frc = new FontRenderContext(tx, false, false);
  68                 LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);
  69                 lbm.setPosition(aci.getBeginIndex());
  70                 while (lbm.getPosition() < aci.getEndIndex()) {
  71                     lbm.nextLayout(100f);
  72                 }
  73             }
  74         }
  75 
  76         for (int x=0;x<25;x++) {
  77             for (int y=0;y<25;y++) {
  78                 AttributedCharacterIterator aci = vanGogh.getIterator();
  79                 double rot = Math.random()*.4*Math.PI - .2*Math.PI;
  80                 AffineTransform tx = AffineTransform.getRotateInstance(rot);
  81                 FontRenderContext frc = new FontRenderContext(tx, false, false);
  82                 LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);
  83                 lbm.setPosition(aci.getBeginIndex());
  84                 while (lbm.getPosition() < aci.getEndIndex()) {
  85                     lbm.nextLayout(100f);
  86                 }
  87             }
  88         }
  89     }
  90 }