--- a/jdk/src/share/classes/java/awt/Font.java Tue Feb 22 14:51:43 2011 +0900
+++ b/jdk/src/share/classes/java/awt/Font.java Wed Feb 23 14:09:23 2011 +0900
@@ -1985,8 +1985,22 @@
* @since 1.2
*/
public int canDisplayUpTo(String str) {
- return canDisplayUpTo(new StringCharacterIterator(str), 0,
- str.length());
+ Font2D font2d = getFont2D();
+ int len = str.length();
+ for (int i = 0; i < len; i++) {
+ char c = str.charAt(i);
+ if (font2d.canDisplay(c)) {
+ continue;
+ }
+ if (!Character.isHighSurrogate(c)) {
+ return i;
+ }
+ if (!font2d.canDisplay(str.codePointAt(i))) {
+ return i;
+ }
+ i++;
+ }
+ return -1;
}
/**
@@ -2009,11 +2023,21 @@
* @since 1.2
*/
public int canDisplayUpTo(char[] text, int start, int limit) {
- while (start < limit && canDisplay(text[start])) {
- ++start;
+ Font2D font2d = getFont2D();
+ for (int i = start; i < limit; i++) {
+ char c = text[i];
+ if (font2d.canDisplay(c)) {
+ continue;
+ }
+ if (!Character.isHighSurrogate(c)) {
+ return i;
+ }
+ if (!font2d.canDisplay(Character.codePointAt(text, i, limit))) {
+ return i;
+ }
+ i++;
}
-
- return start == limit ? -1 : start;
+ return -1;
}
/**
@@ -2034,13 +2058,26 @@
* @since 1.2
*/
public int canDisplayUpTo(CharacterIterator iter, int start, int limit) {
- for (char c = iter.setIndex(start);
- iter.getIndex() < limit && canDisplay(c);
- c = iter.next()) {
+ Font2D font2d = getFont2D();
+ char c = iter.setIndex(start);
+ for (int i = start; i < limit; i++, c = iter.next()) {
+ if (font2d.canDisplay(c)) {
+ continue;
+ }
+ if (!Character.isHighSurrogate(c)) {
+ return i;
+ }
+ char c2 = iter.next();
+ // c2 could be CharacterIterator.DONE which is not a low surrogate.
+ if (!Character.isLowSurrogate(c2)) {
+ return i;
+ }
+ if (!font2d.canDisplay(Character.toCodePoint(c, c2))) {
+ return i;
+ }
+ i++;
}
-
- int result = iter.getIndex();
- return result == limit ? -1 : result;
+ return -1;
}
/**
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/FontClass/SurrogateTest/SupplementaryCanDisplayUpToTest.java Wed Feb 23 14:09:23 2011 +0900
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 6623219
+ * @summary Test canDisplayUpTo with supplementary characters.
+ */
+
+import java.awt.*;
+import java.text.*;
+
+public class SupplementaryCanDisplayUpToTest {
+ // Lists consisting of a font name, test text, and its expected
+ // return value. Test text uses private area code point U+F0000
+ // (\udb80\udc00).
+ private static String[][] DATA = {
+ // Windows
+ { "Meiryo", "\ud87e\udd45\ud87e\udd47\udb80\udc00", "4" },
+ { "Meiryo", "\ud87e\udd45\ud87e\udd47\udb80Z", "4" },
+ { "Meiryo", "\ud87e\udd45\ud87e\udd47\udb80", "4" },
+ { "Meiryo", "\ud87e\udd45\ud87e\udd47\udc00", "4" },
+ { "Meiryo", "\ud87e\udd45\ud87e\udd47", "-1" },
+
+ // Linux
+ { "AR PL UMing TW", "\ud87e\udc25\ud87e\udc3b\udb80\udc00", "4" },
+ { "AR PL UMing TW", "\ud87e\udc25\ud87e\udc3b\udb80Z", "4" },
+ { "AR PL UMing TW", "\ud87e\udc25\ud87e\udc3b\udb80", "4" },
+ { "AR PL UMing TW", "\ud87e\udc25\ud87e\udc3b\udc00", "4" },
+ { "AR PL UMing TW", "\ud87e\udc25\ud87e\udc3b", "-1" },
+
+ // Solaris
+ { "FZMingTi", "\ud87e\udc25\ud87e\udc3b\udb80\udc00", "4" },
+ { "FZMingTi", "\ud87e\udc25\ud87e\udc3b\udb80Z", "4" },
+ { "FZMingTi", "\ud87e\udc25\ud87e\udc3b\udb80", "4" },
+ { "FZMingTi", "\ud87e\udc25\ud87e\udc3b\udc00", "4" },
+ { "FZMingTi", "\ud87e\udc25\ud87e\udc3b", "-1" },
+ };
+ private static int errorcount = 0;
+
+ public static void main(String[] args) {
+ for (String[] data : DATA) {
+ String fontname = data[0];
+ Font font = new Font(fontname, Font.PLAIN, 16);
+ if (font.getFamily().equals(Font.DIALOG)) {
+ // Skip any unavailable fonts.
+ continue;
+ }
+
+ System.out.printf("Testing with font '%s'... ", fontname);
+ int errors = 0;
+ String text = data[1];
+ int expected = Integer.parseInt(data[2]);
+
+ int result = font.canDisplayUpTo(text);
+ if (result != expected) {
+ System.err.println("canDisplayUpTo(String) returns " + result);
+ errors++;
+ }
+
+ result = font.canDisplayUpTo(text.toCharArray(), 0, text.length());
+ if (result != expected) {
+ System.err.println("canDisplayUpTo(char[], int, int) returns " + result);
+ errors++;
+ }
+
+ CharacterIterator iter = new StringCharacterIterator(text);
+ result = font.canDisplayUpTo(iter, iter.getBeginIndex(), iter.getEndIndex());
+ if (result != expected) {
+ System.err.println("canDisplayUpTo(CharacterIterator, int, int) returns " + result);
+ errors++;
+ }
+
+ if (errors == 0) {
+ System.out.println("passed");
+ } else {
+ System.out.println("failed");
+ errorcount += errors;
+ }
+ }
+ if (errorcount > 0) {
+ throw new RuntimeException("SupplementaryCanDisplayUpToTest: failed");
+ }
+ }
+}