JDK-8014069 : [macosx] Cursor Position in JTextfield wrong for non-default font size on retina displays
  • Type: Bug
  • Component: client-libs
  • Sub-Component: javax.swing
  • Affected Version: 7u4,8
  • Priority: P3
  • Status: Resolved
  • Resolution: Duplicate
  • Submitted: 2013-05-07
  • Updated: 2014-11-17
  • Resolved: 2013-07-01
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JDK 8
8Resolved
Related Reports
Duplicate :  
Relates :  
Description
FULL PRODUCT VERSION :
openjdk version  " 1.8.0-internal " 
OpenJDK Runtime Environment (build 1.8.0-internal-strunk_2013_04_24_12_17-b00)
OpenJDK 64-Bit Server VM (build 25.0-b28, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Mac OSX 10.8.2
Darwin Kernel Version 12.2.1: Thu Oct 18 16:32:48 PDT 2012; root:xnu-2050.20.9~2/RELEASE_X86_64 x86_64

EXTRA RELEVANT SYSTEM CONFIGURATION :
Retina display 15'' Mac Book Pro

A DESCRIPTION OF THE PROBLEM :
In a JTextfield with non-default font size the cursor position is not always at character boundaries (visually). This may be related to bug 9002202 as it appears to be a wrong font width calculation that causes the behavior in both cases.  Note that probably the preferred size calculation of the text fields is also wrong because of that. I would expect for the test code to resize the textfields so all text can be displayed.

Does not happen on Apple's JDK6 and does not happen on non-retina displays.

REGRESSION.  Last worked in version 6u45

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Execute attached sample application with the window displayed on a retina display and position the cursor at the end of each JTextfield. It is drawn over the 8 instead of right of it.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Cursor should always be positioned and drawn at character boundaries not over characters.

ACTUAL -
see above

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.WindowConstants;

public class JTextfieldDemo {

    public static void main(String[] args) {

        JFrame frame = new JFrame( " JTextfield Demo " );
        Container contentPane = frame.getContentPane();
        contentPane.setLayout(new FlowLayout());
        final JTextField tf1 = new JTextField( " 1.2.3.4.5.6.7.8 " );
        final JTextField tf2 = new JTextField( " 1-2-3-4-5-6-7-8 " );
        final Font font = new Font(tf1.getFont().getName(), tf1.getFont().getStyle(), 11);
        tf1.setFont(font);
        tf2.setFont(font);
        contentPane.add(tf1);
        contentPane.add(tf2);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);

    }

}

---------- END SOURCE ----------