Examples of java.text.Bidi

java.text.Bidi
This class implements the Unicode Bidirectional Algorithm.
A Bidi object provides information on the bidirectional reordering of the text used to create it. This is required, for example, to properly display Arabic or Hebrew text. These languages are inherently mixed directional, as they order numbers from left-to-right while ordering most other text from right-to-left.
Once created, a Bidi object can be queried to see if the text it represents is all left-to-right or all right-to-left. Such objects are very lightweight and this text is relatively easy to process.
If there are multiple runs of text, information about the runs can be accessed by indexing to get the start, limit, and level of a run. The level represents both the direction and the 'nesting level' of a directional run. Odd levels are right-to-left, while even levels are left-to-right. So for example level 0 represents left-to-right text, while level 1 represents right-to-left text, and level 2 represents left-to-right text embedded in a right-to-left run. @since 1.4

    // Get base direction and whitespace info
    getStringProperties();


    if (Bidi.requiresBidi(string, offset, offset + length))
      {
  bidi = new Bidi(str, leftToRight ? Bidi.DIRECTION_LEFT_TO_RIGHT
                                         : Bidi.DIRECTION_RIGHT_TO_LEFT );
  int rc = bidi.getRunCount();
  byte[] table = new byte[ rc ];
  for(int i = 0; i < table.length; i++)
    table[i] = (byte)bidi.getRunLevel(i);

View Full Code Here

                                              Map attributes) {


        boolean isDirectionLTR = true;
        byte[] levels = null;
        int[] charsLtoV = null;
        Bidi bidi = null;
        int characterCount = chars.length;


        boolean requiresBidi = false;
        byte[] embs = null;


        AttributeValues values = null;
        if (attributes != null) {
            values = AttributeValues.fromMap(attributes);
            if (values.getRunDirection() >= 0) {
                isDirectionLTR = values.getRunDirection() == 0;
                requiresBidi = !isDirectionLTR;
            }
            if (values.getBidiEmbedding() != 0) {
                requiresBidi = true;
                byte level = (byte)values.getBidiEmbedding();
                embs = new byte[characterCount];
                for (int i = 0; i < embs.length; ++i) {
                    embs[i] = level;
                }
            }
        }


        // dlf: get baseRot from font for now???


        if (!requiresBidi) {
            requiresBidi = Bidi.requiresBidi(chars, 0, chars.length);
        }


        if (requiresBidi) {
          int bidiflags = values == null
              ? Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT
              : values.getRunDirection();


          bidi = new Bidi(chars, 0, embs, 0, chars.length, bidiflags);
          if (!bidi.isLeftToRight()) {
              levels = BidiUtils.getLevels(bidi);
              int[] charsVtoL = BidiUtils.createVisualToLogicalMap(levels);
              charsLtoV = BidiUtils.createInverseMap(charsVtoL);
              isDirectionLTR = bidi.baseIsLeftToRight();
          }
        }


        Decoration decorator = Decoration.getDecoration(values);

View Full Code Here

                                              boolean isDirectionLTR,
                                              float[] baselineOffsets) {


        factory.setLineContext(0, chars.length);


        Bidi lineBidi = factory.getLineBidi();
        int[] charsLtoV = null;
        byte[] levels = null;


        if (lineBidi != null) {
            levels = BidiUtils.getLevels(lineBidi);

View Full Code Here

                                                  AttributedCharacterIterator text,
                                                  char[] chars,
                                                  float[] baselineOffsets) {


        StyledParagraph styledParagraph = new StyledParagraph(text, chars);
        Bidi bidi = new Bidi(text);
        if (bidi.isLeftToRight()) {
            bidi = null;
        }
        int layoutFlags = 0; // no extra info yet, bidi determines run and line direction
        TextLabelFactory factory = new TextLabelFactory(frc, chars, bidi, layoutFlags);


        boolean isDirectionLTR = true;
        if (bidi != null) {
            isDirectionLTR = bidi.baseIsLeftToRight();
        }
        return createLineFromText(chars, styledParagraph, factory, isDirectionLTR, baselineOffsets);
    }

View Full Code Here

            fChars[n++] = c;
        }


        text.first();


        fBidi = new Bidi(text);
        if (fBidi.isLeftToRight()) {
            fBidi = null;
        }


        text.first();

View Full Code Here


        int[] charsLtoV = null;
        byte[] charLevels = null;


        if (fBidi != null) {
            Bidi lineBidi = fBidi.createLineBidi(startPos, limitPos);
            charLevels = BidiUtils.getLevels(lineBidi);
            int[] charsVtoL = BidiUtils.createVisualToLogicalMap(charLevels);
            charsLtoV = BidiUtils.createInverseMap(charsVtoL);
        }

View Full Code Here

        fChars = newChars;


        if (fBidi != null || Bidi.requiresBidi(newChars, newCharIndex, newCharIndex + 1) ||
                newParagraph.getAttribute(TextAttribute.BIDI_EMBEDDING) != null) {


            fBidi = new Bidi(newParagraph);
            if (fBidi.isLeftToRight()) {
                fBidi = null;
            }
        }

View Full Code Here

        System.arraycopy(fChars, 0, newChars, 0, deletePos-fStart);
        System.arraycopy(fChars, changedIndex+1, newChars, changedIndex, end-deletePos);
        fChars = newChars;


        if (fBidi != null) {
            fBidi = new Bidi(newParagraph);
            if (fBidi.isLeftToRight()) {
                fBidi = null;
            }
        }

View Full Code Here

    GlyphVector layoutSentence(String label, LabelCacheItem item) {
        final Font font = item.getTextStyle().getFont();
        final char[] chars = label.toCharArray();
        final int length = label.length();
        if (Bidi.requiresBidi(chars, 0, length)) {
            Bidi bidi = new Bidi(label, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
            if (bidi.isRightToLeft()) {
                return font.layoutGlyphVector(graphics.getFontRenderContext(), chars, 0, length,
                        Font.LAYOUT_RIGHT_TO_LEFT);
            } else if (bidi.isMixed()) {
                String r = "";
                for (int i=0; i<bidi.getRunCount(); i++) {
                    String s1 = label.substring(bidi.getRunStart(i), bidi.getRunLimit(i));
                    if (bidi.getRunLevel(i)%2==0) {
                        s1 = new StringBuffer(s1).reverse().toString();
                    }
                    r = r + s1;
                }
                char[] chars2 = r.toCharArray();

View Full Code Here

        // whilst western chars are easier to deal with. Find out which case we're dealing with,
        // and create the glyph vector with the appropriate call
        final char[] chars = label.toCharArray();
        final int length = label.length();
        if(Bidi.requiresBidi(chars, 0, length) && 
                new Bidi(label, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT).isRightToLeft())
            textGlyphVector = font.layoutGlyphVector(graphics.getFontRenderContext(), chars, 
                    0, length, Font.LAYOUT_RIGHT_TO_LEFT);
        else
            textGlyphVector = font.createGlyphVector(graphics.getFontRenderContext(), chars);
        return textGlyphVector;

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.text.Bidi

ae.java.awt.font.TextLine

ae.java.awt.font.TextMeasurer

BidiEmbeddingTest

BidiSurrogateTest

Bug6665028

com.google.i18n.pseudolocalization.methods.FakeBidiTest

com.mxgraph.shape.mxCurveLabelShape

gnu.testlet.java.text.Bidi.Basic

micdoodle8.mods.galacticraft.core.client.gui.screen.SmallFontRenderer

net.minecraft.src.FontRenderer

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.