6699843: IllegalArgumentException when using Graphics.drawString( "", 0, 0 )

Reviewed-by: igor, tdv

jdk/src/share/classes/sun/java2d/SunGraphics2D.java

@@ -2805,6 +2805,9 @@ public final class SunGraphics2D
         }
 
         if (font.hasLayoutAttributes()) {
+            if (str.length() == 0) {
+                return;
+            }
             new TextLayout(str, font, getFontRenderContext()).draw(this, x, y);
             return;
         }
@@ -2831,6 +2834,9 @@ public final class SunGraphics2D
         }
 
         if (font.hasLayoutAttributes()) {
+            if (str.length() == 0) {
+                return;
+            }
             new TextLayout(str, font, getFontRenderContext()).draw(this, x, y);
             return;
         }
@@ -2856,6 +2862,9 @@ public final class SunGraphics2D
         if (iterator == null) {
             throw new NullPointerException("AttributedCharacterIterator is null");
         }
+        if (iterator.getBeginIndex() == iterator.getEndIndex()) {
+            return; /* nothing to draw */
+        }
         TextLayout tl = new TextLayout(iterator, getFontRenderContext());
         tl.draw(this, (float) x, (float) y);
     }
@@ -2865,6 +2874,9 @@ public final class SunGraphics2D
         if (iterator == null) {
             throw new NullPointerException("AttributedCharacterIterator is null");
         }
+        if (iterator.getBeginIndex() == iterator.getEndIndex()) {
+            return; /* nothing to draw */
+        }
         TextLayout tl = new TextLayout(iterator, getFontRenderContext());
         tl.draw(this, x, y);
     }
@@ -2900,6 +2912,9 @@ public final class SunGraphics2D
             throw new ArrayIndexOutOfBoundsException("bad offset/length");
         }
         if (font.hasLayoutAttributes()) {
+            if (data.length == 0) {
+                return;
+            }
             new TextLayout(new String(data, offset, length),
                            font, getFontRenderContext()).draw(this, x, y);
             return;
@@ -2934,6 +2949,9 @@ public final class SunGraphics2D
             chData[i] = (char)(data[i+offset] & 0xff);
         }
         if (font.hasLayoutAttributes()) {
+            if (data.length == 0) {
+                return;
+            }
             new TextLayout(new String(chData),
                            font, getFontRenderContext()).draw(this, x, y);
             return;

jdk/test/java/awt/Graphics2D/DrawString/EmptyAttrString.java

+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug 6699843
+ * @summary IllegalArgumentException when using Graphics.drawString( "", 0, 0 )
+ */
+
+import java.awt.*;
+import java.awt.font.*;
+import java.awt.image.*;
+import java.text.*;
+import java.util.*;
+
+public class EmptyAttrString {
+
+    public static void main(String[] args) {
+        BufferedImage bi =
+           new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g = bi.createGraphics();
+        Font f = new Font( "Dialog", Font.PLAIN, 12 );
+        Map map = new HashMap();
+        map.put(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
+        f = f.deriveFont(map);
+        g.setFont(f);
+        g.drawString("", 50, 50);
+        g.drawString("", 50f, 50f);
+        char[] chs = { } ;
+        g.drawChars(chs, 0, 0, 50, 50);
+        byte[] bytes = { } ;
+        g.drawBytes(bytes, 0, 0, 50, 50);
+        AttributedString astr = new AttributedString("");
+        g.drawString(astr.getIterator(), 50, 50);
+        g.drawString(astr.getIterator(), 50f, 50f);
+        return;
+    }
+}