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Date: Wed, 19 Nov 2014 17:58:02 +0100
Message-ID: 
 <CAH9fUpacSWB6uGWEzgECJeKSSaCpnSEj_i+oD0zRnnxPi_JvuQ@mail.gmail.com>
Subject: Re: Fwd: JAVA8u20 and JAVA8u25 Regression in Graphics2D drawing of
 derived Fonts ?
From: Philippe Mouawad <philippe.mouawad@gmail.com>
To: Balchandra Vaidya <balchandra.vaidya@oracle.com>
Cc: rory.odonnell@oracle.com, Dalibor Topic <dalibor.topic@oracle.com>,
	"dev@jmeter.apache.org" <dev@jmeter.apache.org>
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Hi,
I tested on windows 7 , issue is not reproduced.
Don't have Linux to test.

Maybe other member of team can do this.

Regards

On Wed, Nov 19, 2014 at 4:45 PM, Balchandra Vaidya <
balchandra.vaidya@oracle.com> wrote:

>
> Hi Philippe,
>
> Here is the JBS ID - https://bugs.openjdk.java.net/browse/JDK-8065373.
> Did you see this issue only on Mac OS or did you see it on another
> OS/platform such as Windows?
>
> Thanks for reporting it.
>
> Regards,
> Balchandra
>
>
>
>
> On 11/19/14 03:11 PM, Philippe Mouawad wrote:
>
> Hi,
> JI-9016915 Regards
> Philippe
>
> On Wed, Nov 19, 2014 at 4:10 PM, Philippe Mouawad <
> philippe.mouawad@gmail.com> wrote:
>
>>   Hello Rory,
>>  I posted a bug, waiting for mail notification.
>>  It seems bug appeared after Java 7 u40 as I just tested now with Java7
>> u71 and it is also broken there.
>>  I didn't test versions between 7u40 and 7u71.
>>
>>  Regards
>> Philippe
>>
>> On Wed, Nov 19, 2014 at 3:44 PM, Rory O'Donnell <rory.odonnell@oracle.com
>> > wrote:
>>
>>> Hi Philippe,
>>>
>>> Can you log a Java Incident and send us the JI  number ?
>>>
>>> Rgds,Rory
>>> On 19/11/2014 14:36, Philippe Mouawad wrote:
>>>
>>>> Hello Rory,
>>>> For information, I submitted this question on Swing-dev , I am not sure
>>>> it
>>>> is the right list, if so hope you can help.
>>>>
>>>> Regards
>>>> Philippe
>>>> ---------- Forwarded message ----------
>>>> From: Philippe Mouawad <philippe.mouawad@gmail.com>
>>>> Date: Wed, Nov 19, 2014 at 3:34 PM
>>>> Subject: JAVA8u20 and JAVA8u25 Regression in Graphics2D drawing of
>>>> derived
>>>> Fonts ?
>>>> To: swing-dev@openjdk.java.net
>>>>
>>>>
>>>> Hello,
>>>> We had recently a report of a bug on Apache JMeter:
>>>>
>>>>      - https://issues.apache.org/bugzilla/show_bug.cgi?id=57221
>>>>
>>>>
>>>> The bug only occurs on Java 8 (u20 and u25).
>>>>
>>>> We use jCharts library.
>>>>
>>>> I narrowed the bug and it seems to come from the way derived fonts are
>>>> drawn:
>>>>
>>>> Library uses:
>>>>
>>>>      public static final AffineTransform VERTICAL_ROTATION =
>>>> AffineTransform.getRotateInstance( -Math.PI / 2 );
>>>>
>>>> Then
>>>>
>>>>          this.affineTransform= VERTICAL_ROTATION;
>>>> this.font.deriveFont( this.affineTransform )
>>>>
>>>> So I build a stupid and ugly isolated class to show issue, run it on
>>>> Java 7
>>>> display is fine , run it on Java8 result is strange.
>>>>
>>>> package org.jCharts;
>>>>
>>>> import java.awt.Color;
>>>> import java.awt.Dimension;
>>>> import java.awt.Font;
>>>> import java.awt.Graphics;
>>>> import java.awt.Graphics2D;
>>>> import java.awt.RenderingHints;
>>>> import java.awt.font.FontRenderContext;
>>>> import java.awt.font.LineMetrics;
>>>> import java.awt.geom.AffineTransform;
>>>> import java.awt.geom.GeneralPath;
>>>> import java.awt.geom.Rectangle2D;
>>>>
>>>> import javax.swing.JFrame;
>>>> import javax.swing.JPanel;
>>>>
>>>> public class Test extends JPanel {
>>>>      Rectangle2D.Float rect = new Rectangle2D.Float(200, 200, 220, 35);
>>>>      // float theta = 1.1748778437843f;
>>>>      double theta = Math.PI / 6;
>>>>
>>>>      @Override
>>>>      protected void paintComponent(Graphics g) {
>>>>          super.paintComponent(g);
>>>>          Graphics2D g2 = (Graphics2D) g;
>>>>          g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
>>>>                  RenderingHints.VALUE_ANTIALIAS_ON);
>>>>          g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
>>>>                  RenderingHints.VALUE_FRACTIONALMETRICS_ON);
>>>>          g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
>>>>                  RenderingHints.VALUE_STROKE_PURE);
>>>>          g2.setPaint(Color.blue);
>>>>          Font font = g2.getFont().deriveFont(18f);
>>>>          g2.setFont(font);
>>>>          FontRenderContext frc = g2.getFontRenderContext();
>>>>          String s = "This text should be rotated";
>>>>          float width = (float) font.getStringBounds(s, frc).getWidth();
>>>>          LineMetrics lm = font.getLineMetrics(s, frc);
>>>>          float height = lm.getAscent() + lm.getDescent();
>>>>          // Scale text into rect.
>>>>          float xScale = rect.width / width;
>>>>          float yScale = rect.height / height;
>>>>          float scale = (xScale > yScale) ? yScale : xScale;
>>>>          // Locate string origin.
>>>>          double x = rect.x;
>>>>          double y = rect.y + (rect.height + scale * height) / 2 - scale
>>>>                  * lm.getDescent();
>>>>          AffineTransform at = AffineTransform.getTranslateInstance(x,
>>>> y);
>>>>          at.scale(scale, scale);
>>>>          AffineTransform rotator = new AffineTransform();
>>>>          rotator.rotate(theta, rect.getCenterX(), rect.getCenterY());
>>>>          GeneralPath rect2 = new GeneralPath(
>>>>                  rotator.createTransformedShape(rect));
>>>>          // Draw with no rotation.
>>>>          g2.draw(rect);
>>>>          g2.setPaint(Color.red);
>>>>          g2.setFont(font.deriveFont(at));
>>>>          g2.drawString(s, 0, 0);
>>>>          // Rotate once.
>>>>          g2.setPaint(Color.blue);
>>>>          g2.draw(rect2);
>>>>          rotator.concatenate(at);
>>>>          g2.setFont(font.deriveFont(rotator));
>>>>          g2.setPaint(Color.red);
>>>>          g2.drawString(s, 0, 0);
>>>>          // Rotate again.
>>>>          rotator.setToIdentity();
>>>>          rotator.rotate(2 * theta, rect.getCenterX(),
>>>> rect.getCenterY());
>>>>          rect2 = new GeneralPath(rotator.createTransformedShape(rect));
>>>>          g2.setPaint(Color.blue);
>>>>          g2.draw(rect2);
>>>>          rotator.concatenate(at);
>>>>          g2.setFont(font.deriveFont(rotator));
>>>>          g2.setPaint(Color.red);
>>>>          g2.drawString(s, 0, 0);
>>>>          // Check scaled string bounds.
>>>>          // this was handled by the fractional metrics rendering hint
>>>>      }
>>>>
>>>>      public static void main(String[] args) {
>>>>          Test test = new Test();
>>>>          test.setPreferredSize(new Dimension(800, 600));
>>>>          JFrame f = new JFrame();
>>>>          f.getContentPane().add(test);
>>>>          f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>>>>          f.pack();
>>>>          f.setVisible(true);
>>>>      }
>>>> }
>>>>
>>>> Regards
>>>> Philippe M.
>>>>
>>>>
>>>>
>>>>
>>> --
>>> Rgds,Rory O'Donnell
>>> Quality Engineering Manager
>>> Oracle EMEA , Dublin, Ireland
>>>
>>>
>>
>>
>>  --
>> Cordialement.
>> Philippe Mouawad.
>>
>>
>>
>
>
> --
> Cordialement.
> Philippe Mouawad.
>
>
>
>


-- 
Cordialement.
Philippe Mouawad.

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