Class BidiProcessor

java.lang.Object
org.eclipse.draw2d.text.BidiProcessor

public final class BidiProcessor extends Object
A helper class for a BlockFlow that does Bidi evaluation of all the text in that block.

WARNING: This class is for INTERNAL use only.

Since:
3.1
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final BidiProcessor
    A singleton instance.
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    add(FlowFigure fig, char c)
    Records a character contribution for this bidi context.
    void
    add(FlowFigure fig, String str)
    Records a String contribution for this bidi context.
    void
    This methods allows FlowFigures to contribute text that may effect the bidi evaluation, but is not text that is visible on the screen.
    void
    Processes the contributed text, determines the Bidi levels, and assigns them to the FlowFigures that made thet contributions.
    void
    setOrientation(int newOrientation)
    Sets the paragraph embedding.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • INSTANCE

      public static final BidiProcessor INSTANCE
      A singleton instance.
  • Method Details

    • add

      public void add(FlowFigure fig, String str)
      Records a String contribution for this bidi context. Contributions are concatenated (in the order that they were contributed) to make the final String which will determine the bidi info for all contributors.
      Parameters:
      fig - the figure that is contributing the given text
      str - the text contributed by the given figure
      See Also:
    • add

      public void add(FlowFigure fig, char c)
      Records a character contribution for this bidi context. Contributions are concatenated (in the order that they were contributed) to make the final String which will determine the bidi info for all contributors.
      Parameters:
      fig - the figure that is contributing the given text
      c - the character being added
      See Also:
    • addControlChar

      public void addControlChar(char c)
      This methods allows FlowFigures to contribute text that may effect the bidi evaluation, but is not text that is visible on the screen. The bidi level of such text is reported back to the contributing figure.
      Parameters:
      c - the control character
    • process

      public void process()
      Processes the contributed text, determines the Bidi levels, and assigns them to the FlowFigures that made thet contributions. This class is for INTERNAL use only. Shaping of visually contiguous Arabic characters that are split in different figures is also handled. This method will do nothing if the contributed text does not require Bidi evaluation. All contributions are discarded at the end of this method.
    • setOrientation

      public void setOrientation(int newOrientation)
      Sets the paragraph embedding. The given orientation will be used on TextLayout when determining the Bidi levels.
      Parameters:
      newOrientation - SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT