Your message dated Fri, 11 Mar 2022 13:53:06 -0800
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<caescoivjuxpemeqr8vwofq+ehyfaiuhc8rqvsj_lnd6w2bw...@mail.gmail.com>
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has caused the Debian Bug report #834053,
regarding openjdk-8: java.awt.Font#deriveFont(int style) corrupts font size
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
834053: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=834053
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: openjdk-8
Severity: normal
Tags: patch
Dear Maintainer,
Problem
=======
java.awt.Font#deriveFont(int style) tries to create new Font instance
that has the same font size. But it uses rounded font size wrongly.
So derived font has different font size.
(openjdk-7 has a same problem.)
Sample code
===========
import java.awt.Font;
public class DeriveFontProblem {
public static void main(String[] args) {
Font fontBase = new Font("Helvetica", Font.PLAIN, 1);
Font font105 = fontBase.deriveFont(10.5f);
System.out.println("font105 : size=" + font105.getSize2D());
Font font105Plain = font105.deriveFont(Font.PLAIN);
System.out.println("font105Plain: size=" + font105Plain.getSize2D());
}
}
Result of this code
===================
Actual
>font105 : size=10.5
>font105Plain: size=11.0
Expected
>font105 : size=10.5
>font105Plain: size=10.5
Suggested fix
=============
Font#deriveFont(int style) should use (float) "pointSize", not (int) "size".
Here is a patch to fix:
--- java/awt/Font.java.orig 2016-08-12 01:03:10.703646834 +0900
+++ java/awt/Font.java 2016-08-12 01:02:43.091646225 +0900
@@ -1933,7 +1933,7 @@
*/
public Font deriveFont(int style){
if (values == null) {
- return new Font(name, style, size, createdFont, font2DHandle);
+ return new Font(name, style, pointSize, createdFont, font2DHandle);
}
AttributeValues newValues = getAttributeValues().clone();
int oldStyle = (this.style != style) ? this.style : -1;
Reportbug output
================
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'oldstable-updates'), (500,
'unstable'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.14-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: unable to detect
--- End Message ---
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--- End Message ---
