Example usage for java.awt.font LineBreakMeasurer LineBreakMeasurer

Introduction

In this page you can find the example usage for java.awt.font LineBreakMeasurer LineBreakMeasurer.

Prototype

public LineBreakMeasurer(AttributedCharacterIterator text, BreakIterator breakIter, FontRenderContext frc) 

Source Link

Document

Constructs a LineBreakMeasurer for the specified text.

Usage

From source file:forge.view.arcane.util.OutlinedLabel.java

/** {@inheritDoc} */
@Override//from w  w w  . j ava 2s .  c o  m
public final void paint(final Graphics g) {
    if (getText().length() == 0) {
        return;
    }

    Dimension size = getSize();
    //
    //        if( size.width < 50 ) {
    //            g.setColor(Color.cyan);
    //            g.drawRect(0, 0, size.width-1, size.height-1);
    //        }

    Graphics2D g2d = (Graphics2D) g;

    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

    int textX = outlineSize, textY = 0;
    int wrapWidth = Math.max(0, wrap ? size.width - outlineSize * 2 : Integer.MAX_VALUE);

    final String text = getText();
    AttributedString attributedString = new AttributedString(text);
    if (!StringUtils.isEmpty(text)) {
        attributedString.addAttribute(TextAttribute.FONT, getFont());
    }
    AttributedCharacterIterator charIterator = attributedString.getIterator();
    FontRenderContext fontContext = g2d.getFontRenderContext();

    LineBreakMeasurer measurer = new LineBreakMeasurer(charIterator,
            BreakIterator.getWordInstance(Locale.ENGLISH), fontContext);
    int lineCount = 0;
    while (measurer.getPosition() < charIterator.getEndIndex()) {
        measurer.nextLayout(wrapWidth);
        lineCount++;
        if (lineCount > 2) {
            break;
        }
    }
    charIterator.first();
    // Use char wrap if word wrap would cause more than two lines of text.
    if (lineCount > 2) {
        measurer = new LineBreakMeasurer(charIterator, BreakIterator.getCharacterInstance(Locale.ENGLISH),
                fontContext);
    } else {
        measurer.setPosition(0);
    }
    while (measurer.getPosition() < charIterator.getEndIndex()) {
        TextLayout textLayout = measurer.nextLayout(wrapWidth);
        float ascent = textLayout.getAscent();
        textY += ascent; // Move down to baseline.

        g2d.setColor(outlineColor);
        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.8f));

        textLayout.draw(g2d, textX + outlineSize, textY - outlineSize);
        textLayout.draw(g2d, textX + outlineSize, textY + outlineSize);
        textLayout.draw(g2d, textX - outlineSize, textY - outlineSize);
        textLayout.draw(g2d, textX - outlineSize, textY + outlineSize);

        g2d.setColor(getForeground());
        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
        textLayout.draw(g2d, textX, textY);

        // Move down to top of next line.
        textY += textLayout.getDescent() + textLayout.getLeading();
    }
}

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From source file:net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.java

protected int measureExactLineBreakIndex(float width, int endLimit, boolean requireWord) {
    //FIXME would it be faster to create and cache a LineBreakMeasurer for the whole paragraph?
    Map<Attribute, Object> attributes = new HashMap<Attribute, Object>();
    // we only need the font as it includes the size and style
    attributes.put(TextAttribute.FONT, fontInfo.fontInfo.font);

    String textLine = paragraphText.substring(paragraphPosition, endLimit);
    AttributedString attributedLine = new AttributedString(textLine, attributes);

    // we need a fresh iterator for the line
    BreakIterator breakIterator = paragraphTruncateAtChar ? BreakIterator.getCharacterInstance()
            : BreakIterator.getLineInstance();
    LineBreakMeasurer breakMeasurer = new LineBreakMeasurer(attributedLine.getIterator(), breakIterator,
            context.getFontRenderContext());
    int breakIndex = breakMeasurer.nextOffset(width, endLimit - paragraphPosition, requireWord)
            + paragraphPosition;/*from   ww  w .ja v  a2 s  . c  o m*/
    if (logTrace) {
        log.trace("exact line break index measured at " + (paragraphOffset + breakIndex));
    }

    return breakIndex;
}

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