8065373: [macosx] jdk8, jdk7u60 Regression in Graphics2D drawing of derived Fonts

Reviewed-by: bae, prr

src/macosx/native/sun/font/AWTStrike.m

 /*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2014, 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
@@ -25,14 +25,11 @@
 
 #import <JavaNativeFoundation/JavaNativeFoundation.h>
 #import "java_awt_geom_PathIterator.h"
-#import "sun_awt_SunHints.h"
 #import "sun_font_CStrike.h"
 #import "sun_font_CStrikeDisposer.h"
 #import "CGGlyphImages.h"
 #import "CGGlyphOutlines.h"
-#import "AWTStrike.h"
 #import "CoreTextSupport.h"
-//#import "jni_util.h"
 #include "fontscalerdefs.h"
 
 /* Use THIS_FILE when it is available. */
@@ -65,10 +62,10 @@ static CGAffineTransform sInverseTX = { 1, 0, 0, -1, 0, 0 };
         invDevTx.b *= -1;
         invDevTx.c *= -1;
         fFontTx = CGAffineTransformConcat(CGAffineTransformConcat(tx, invDevTx), sInverseTX);
-        fDevTx = CGAffineTransformInvert(invDevTx);
+        fDevTx = CGAffineTransformInvert(CGAffineTransformConcat(invDevTx, sInverseTX));
 
         // the "font size" is the square root of the determinant of the matrix
-        fSize = sqrt(abs(fFontTx.a * fFontTx.d - fFontTx.b * fFontTx.c));
+        fSize = sqrt(fabs(fFontTx.a * fFontTx.d - fFontTx.b * fFontTx.c));
     }
     return self;
 }

test/java/awt/Graphics2D/DrawString/DrawRotatedStringUsingRotatedFont.java

+/*
+ * Copyright (c) 2014, 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.
+ */
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import static java.awt.image.BufferedImage.TYPE_INT_RGB;
+import static java.lang.Math.toRadians;
+
+/**
+ * @test
+ * @bug 8065373
+ * @summary Verifies that we get correct direction, when draw rotated string.
+ * @author Sergey Bylokhov
+ * @run main DrawRotatedStringUsingRotatedFont
+ */
+public final class DrawRotatedStringUsingRotatedFont {
+
+    private static final int SIZE = 500;
+    private static final String STR = "MMMMMMMMMMMMMMMM";
+
+    private static AffineTransform[] txs = {
+                            AffineTransform.getRotateInstance(toRadians(00)),
+                            AffineTransform.getRotateInstance(toRadians(45)),
+                            AffineTransform.getRotateInstance(toRadians(-45)),
+                            AffineTransform.getRotateInstance(toRadians(90)),
+                            AffineTransform.getRotateInstance(toRadians(-90)),
+                            AffineTransform.getRotateInstance(toRadians(135)),
+                            AffineTransform.getRotateInstance(toRadians(-135)),
+                            AffineTransform.getRotateInstance(toRadians(180)),
+                            AffineTransform.getRotateInstance(toRadians(-180)),
+                            AffineTransform.getRotateInstance(toRadians(225)),
+                            AffineTransform.getRotateInstance(toRadians(-225)),
+                            AffineTransform.getRotateInstance(toRadians(270)),
+                            AffineTransform.getRotateInstance(toRadians(-270)),
+                            AffineTransform.getRotateInstance(toRadians(315)),
+                            AffineTransform.getRotateInstance(toRadians(-315)),
+                            AffineTransform.getRotateInstance(toRadians(360)),
+                            AffineTransform.getRotateInstance(toRadians(-360))
+    };
+
+    public static void main(final String[] args) throws IOException {
+        for (final AffineTransform tx2 : txs) {
+            for (final AffineTransform tx1 : txs) {
+                for (final boolean aa : new boolean[]{true, false}) {
+                    final BufferedImage bi1 = createImage(aa, tx1, tx2);
+                    final BufferedImage bi2 = createImage(aa, tx2, tx1);
+                    compareImage(bi1, bi2);
+                    fillTextArea(bi1, tx1, tx2);
+                    fillTextArea(bi2, tx2, tx1);
+                    checkColors(bi1, bi2);
+                }
+            }
+        }
+        System.out.println("Passed");
+    }
+
+    /**
+     * Compares two images.
+     */
+    private static void compareImage(final BufferedImage bi1,
+                                     final BufferedImage bi2)
+            throws IOException {
+        for (int i = 0; i < SIZE; ++i) {
+            for (int j = 0; j < SIZE; ++j) {
+                if (bi1.getRGB(i, j) != bi2.getRGB(i, j)) {
+                    ImageIO.write(bi1, "png", new File("image1.png"));
+                    ImageIO.write(bi2, "png", new File("image2.png"));
+                    throw new RuntimeException("Failed: wrong text location");
+                }
+            }
+        }
+    }
+
+    /**
+     * Checks an image color. RED and GREEN are allowed only.
+     */
+    private static void checkColors(final BufferedImage bi1,
+                                    final BufferedImage bi2)
+            throws IOException {
+        for (int i = 0; i < SIZE; ++i) {
+            for (int j = 0; j < SIZE; ++j) {
+                final int rgb1 = bi1.getRGB(i, j);
+                final int rgb2 = bi2.getRGB(i, j);
+                if (rgb1 != rgb2 || rgb1 != 0xFFFF0000 && rgb1 != 0xFF00FF00) {
+                    ImageIO.write(bi1, "png", new File("image1.png"));
+                    ImageIO.write(bi2, "png", new File("image2.png"));
+                    throw new RuntimeException("Failed: wrong text location");
+                }
+            }
+        }
+    }
+
+    /**
+     * Creates an BufferedImage and draws a text, using two transformations,
+     * one for graphics and one for font.
+     */
+    private static BufferedImage createImage(final boolean aa,
+                                             final AffineTransform gtx,
+                                             final AffineTransform ftx) {
+        final BufferedImage bi = new BufferedImage(SIZE, SIZE, TYPE_INT_RGB);
+        final Graphics2D bg = bi.createGraphics();
+        bg.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                            aa ? RenderingHints.VALUE_ANTIALIAS_ON
+                               : RenderingHints.VALUE_ANTIALIAS_OFF);
+        bg.setColor(Color.RED);
+        bg.fillRect(0, 0, SIZE, SIZE);
+        bg.translate(100, 100);
+        bg.transform(gtx);
+        bg.setColor(Color.BLACK);
+        bg.setFont(bg.getFont().deriveFont(20.0f).deriveFont(ftx));
+        bg.drawString(STR, 0, 0);
+        bg.dispose();
+        return bi;
+    }
+
+    /**
+     * Fills the area of text using green solid color.
+     */
+    private static void fillTextArea(final BufferedImage bi,
+                                     final AffineTransform tx1,
+                                     final AffineTransform tx2) {
+        final Graphics2D bg = bi.createGraphics();
+        bg.translate(100, 100);
+        bg.transform(tx1);
+        bg.transform(tx2);
+        bg.setColor(Color.GREEN);
+        final Font font = bg.getFont().deriveFont(20.0f);
+        bg.setFont(font);
+        bg.fill(font.getStringBounds(STR, bg.getFontRenderContext()));
+        bg.dispose();
+    }
+}
+