Package org.apache.jorphan.gui.ui

Class KerningOptimizer

java.lang.Object
org.apache.jorphan.gui.ui.KerningOptimizer
@API(since="5.5", status=INTERNAL) public class KerningOptimizer extends Object
Text rendering might be slow for long lines when kerning is enabled, so it is worth disabling kerning for long texts.

  • Field Details

  • Constructor Details

    • KerningOptimizer

      public KerningOptimizer()

  • Method Details

    • setMaxTextLengthWithKerning

      public void setMaxTextLengthWithKerning(int length)
      Configures the maximum document length for rendering with kerning enabled.
      Parameters:
      length - maximum document length for rendering with kerning enabled

    • getMaxTextLengthWithKerning

      public int getMaxTextLengthWithKerning()

    • configureKerning

      public void configureKerning(JComponent component, int documentLength)
      Configures text kerning according to the expected document length. This might be useful before setting the document so the kerning is disabled before updating the document.
      Parameters:
      component - text component for kerning configuration
      documentLength - expected document length

    • installKerningListener

      public void installKerningListener(JTextComponent textComponent)
      Adds a listener that disables kerning if text length reaches a certain threshold.
      Parameters:
      textComponent - text component for kerning configuration

    • uninstallKerningListener

      public void uninstallKerningListener(JTextComponent textComponent)
      Removes the listener that disables kerning if text length reaches a certain threshold.
      Parameters:
      textComponent - text component for kerning configuration