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From "Oleg Khaschansky" <oleg.v.khaschan...@gmail.com>
Subject Re: [jira] Created: (HARMONY-1456) [classlib][awt]java.awt.Font.hasUniformLineMetrics() return true on Harmony while RI returns false
Date Tue, 19 Sep 2006 13:15:08 GMT
I wanted to say that if RI always returns false then there's very
small probability that any application developed for RI's classlib
uses this.

On 9/19/06, Ilya Okomin <ilya.okomin@gmail.com> wrote:
> On 9/19/06, Oleg Khaschansky <oleg.v.khaschansky@gmail.com > wrote:
>
> > +1. BTW, I can't imagine the application that could be affected by
> > this difference.
>
>
> It may have sence if the application uses certain metrics for logical fonts
> according to the hasUniformLineMetrics() returned value. E.g. baseline
> offsets or lines thicknesses may be different for the physical fonts, that
> are composing logical font. Probably some applications would use font
> metrics if the hasUniformLineMetrics() returned true and use redefined
> values for such metrics if returned value is false, depending on the
> situation. (It is only a guess;)
>
> Thanks,
> Ilya.
>
>
>
> > On 9/19/06, Ilya Okomin < ilya.okomin@gmail.com> wrote:
> > > Hi, community!
> > >
> > > I found for java.awt.Font.hasUniformLineMetrics() RI returns false for
> > all
> > > fonts (physical/logical) while Harmony returns true for physical and
> > false
> > > for logical.
> > > Spec says: "Checks whether or not this Font has uniform line metrics. A
> > > logical Font might be a composite font, which means that it is composed
> > of
> > > different physical fonts to cover different code ranges. Each of these
> > fonts
> > > might have different LineMetrics. If the logical Font is a single font
> > then
> > > the metrics would be uniform. ". Thus I find reasonable to return true
> > for
> > > physical fonts, as they are single.I assume that it is a non-bug
> > difference
> > > from RI.
> > > Any thoughts on this issue?
> > >
> > > Regards,
> > > Ilya.
> > >
> > >
> > > On 9/13/06, Ilya Okomin (JIRA) < jira@apache.org> wrote:
> > > >
> > > > [classlib][awt]java.awt.Font.hasUniformLineMetrics() return true on
> > > > Harmony while RI returns false
> > > >
> > > >
> > --------------------------------------------------------------------------------------------------
> >
> > > >
> > > >                 Key: HARMONY-1456
> > > >                 URL: http://issues.apache.org/jira/browse/HARMONY-1456
> > > >             Project: Harmony
> > > >          Issue Type: Bug
> > > >          Components: Non-bug differences from RI
> > > >         Environment: Windows XP
> > > >            Reporter: Ilya Okomin
> > > >            Priority: Trivial
> > > >
> > > >
> > > > According to the specification method must
> > Font.hasUniformLineMetricsreturn true if this Font has uniform
> > > > line metrics; false otherwise.
> > > > RI returns false for physical font "Arial" while Harmony returns true.
> >
> > > > ====================test.java====================
> > > > import java.awt.*;
> > > >
> > > > import junit.framework.TestCase;
> > > >
> > > > public class test extends TestCase {
> > > >
> > > >    public void testRun() {
> > > >        final String name = "Arial";
> > > >
> > > >        Font f=new Font(name, Font.BOLD, 12);
> > > >
> > > >        // Check if created font is physical, it's family name
> > > >        // is not logical and equals to the name parameter.
> > > >        assertEquals(f.getFamily(), name);
> > > >        assertTrue(f.hasUniformLineMetrics());
> > > >    }
> > > > }
> > > > ===============================================
> > > >
> > > > Output:
> > > > RI: java version "1.5.0"
> > > > Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
> > > > BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32,
> > > > R25.0.0-75, GC: System optimized over throughput (initial strategy
> > > > singleparpar))
> > > >
> > > > junit.framework.AssertionFailedError
> > > >        at junit.framework.Assert.fail (Assert.java:47)
> > > >        at junit.framework.Assert.assertTrue(Assert.java:20)
> > > >        at junit.framework.Assert.assertTrue(Assert.java:27)
> > > >        at test.testRun(Test9688.java:17)
> > > >        at jrockit.reflect.VirtualNativeMethodInvoker.invoke(
> > > > Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown
> > Source)
> > > >        at java.lang.reflect.Method.invoke (Ljava.lang.Object;[
> > > > Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
> > > >        at junit.framework.TestCase.runTest(TestCase.java:154)
> > > >        at junit.framework.TestCase.runBare(TestCase.java :127)
> > > >        at junit.framework.TestResult$1.protect(TestResult.java:106)
> > > >        at junit.framework.TestResult.runProtected(TestResult.java:124)
> > > >        at junit.framework.TestResult.run (TestResult.java:109)
> > > >        at junit.framework.TestCase.run(TestCase.java:118)
> > > >        at junit.framework.TestSuite.runTest(TestSuite.java:208)
> > > >        at junit.framework.TestSuite.run (TestSuite.java:203)
> > > >        at
> > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
> > > > RemoteTestRunner.java:478)
> > > >        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run (
> > > > RemoteTestRunner.java:344)
> > > >        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(
> > > > RemoteTestRunner.java:196)
> > > >
> > > > Harmony: java version "1.5.0 "
> > > > pre-alpha : not complete or compatible
> > > > svn = r431938, (Aug 16 2006), Windows/ia32/msvc 1310, release build
> > > > http://incubator.apache.org/harmony
> > > >
> > > > // test passed!
> > > >
> > > > I would suppose that it is RI bug, since spec says: " If the logical
> > Font
> > > > is a single font then the metrics would be uniform." In this case we
> > have
> > > > "Arial" font that is a single physical font on Windows platform and
> > > > according to spec it has to have uniform metrics.
> > > >
> > > >
> > > >
> > > > --
> > > > This message is automatically generated by JIRA.
> > > > -
> > > > If you think it was sent incorrectly contact one of the
> > administrators:
> > > > http://issues.apache.org/jira/secure/Administrators.jspa
> > > > -
> > > > For more information on JIRA, see:
> > http://www.atlassian.com/software/jira
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > --
> > > Ilya Okomin
> > > Intel Middleware Products Division
> > >
> > >
> >
> > ---------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
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> >
> >
>
>
> --
> --
> Ilya Okomin
> Intel Middleware Products Division
>
>

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