[9] Review request for 6302464 Allow programmatic enabling of subpixel anti-aliasing in Swing

[Alexander Scherbatiy]

Hello,
Could you review the fix:
  bug: https://bugs.openjdk.java.net/browse/JDK-6302464
  webrev: http://cr.openjdk.java.net/~alexsch/6302464/webrev.00

Swing uses internal API to set antialiasing settings for L&Fs and 
components.

    SwingUtilities2.AATextInfo aaTextInfo = new SwingUtilities2.AATextInfo(
            RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB, 140);

UIManager.getDefaults().put(SwingUtilities2.AA_TEXT_PROPERTY_KEY, 
aaTextInfo); // set aa hints globally
component.putClientProperty(SwingUtilities2.AA_TEXT_PROPERTY_KEY, 
aaTextInfo); // set aa hints for a JComponent


There are some ways to provide a public mechanism for antialiasing 
enabling in Swing:

1. Setting antialiasing rendering hints into UI defaults and component 
client properties:

UIManager.getDefaults().put(RenderingHints.KEY_TEXT_ANTIALIASING, 
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
component.putClientProperty(RenderingHints.KEY_TEXT_ANTIALIASING, 
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);

2. Setting a map which contains antialiasing hints:

    Map<RenderingHints.Key, Object> aaHintsMap = new HashMap<>();
    aaHintsMap.put(RenderingHints.KEY_TEXT_ANTIALIASING, 
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);

    UIManager.getDefaults().put(AA_TEXT_PROPERTY_KEY, aaHintsMap);
    component.putClientProperty(AA_TEXT_PROPERTY_KEY, aaHintsMap);

3. Information about antialiasing hints can be stored in a public class

    AATextInfo aaTextInfo = new 
AATextInfo(RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB, 140);
    UIManager.getDefaults().put(AA_TEXT_PROPERTY_KEY, aaTextInfo);
    component.putClientProperty(AA_TEXT_PROPERTY_KEY, aaTextInfo);

The proposed fix used the first approach.

Thanks,
Alexandr.