Examples of FontMetrics

ae.java.awt.FontMetrics
The FontMetrics class defines a font metrics object, which encapsulates information about the rendering of a particular font on a particular screen.
Note to subclassers: Since many of these methods form closed, mutually recursive loops, you must take care that you implement at least one of the methods in each such loop to prevent infinite recursion when your subclass is used. In particular, the following is the minimal suggested set of methods to override in order to ensure correctness and prevent infinite recursion (though other subsets are equally feasible):
- {@link #getAscent()}
- {@link #getLeading()}
- {@link #getMaxAdvance()}
- {@link #charWidth(char)}
- {@link #charsWidth(char[],int,int)}
Note that the implementations of these methods are inefficient, so they are usually overridden with more efficient toolkit-specific implementations.
When an application asks to place a character at the position (x, y), the character is placed so that its reference point (shown as the dot in the accompanying image) is put at that position. The reference point specifies a horizontal line called the baseline of the character. In normal printing, the baselines of characters should align.
In addition, every character in a font has an ascent, a descent, and an advance width. The ascent is the amount by which the character ascends above the baseline. The descent is the amount by which the character descends below the baseline. The advance width indicates the position at which AWT should place the next character.
An array of characters or a string can also have an ascent, a descent, and an advance width. The ascent of the array is the maximum ascent of any character in the array. The descent is the maximum descent of any character in the array. The advance width is the sum of the advance widths of each of the characters in the character array. The advance of a String is the distance along the baseline of the String. This distance is the width that should be used for centering or right-aligning the String.
Note that the advance of a String is not necessarily the sum of the advances of its characters measured in isolation because the width of a character can vary depending on its context. For example, in Arabic text, the shape of a character can change in order to connect to other characters. Also, in some scripts, certain character sequences can be represented by a single shape, called a ligature. Measuring characters individually does not account for these transformations.
Font metrics are baseline-relative, meaning that they are generally independent of the rotation applied to the font (modulo possible grid hinting effects). See {@link ae.java.awt.Font Font}. @author Jim Graham @see ae.java.awt.Font @since JDK1.0
com.google.code.appengine.awt.FontMetrics
com.jgraph.gaeawt.java.awt.FontMetrics
java.awt.FontMetrics
org.apache.fontbox.afm.FontMetrics
org.apache.fop.fonts.FontMetrics
Main interface for access to font metrics.
org.eclipse.swt.graphics.FontMetrics
se.org/swt/">Sample code and further information
org.gwt.mosaic.core.client.FontMetrics
The {@code FontMetrics} class defines a font metrics object, whichencapsulates information about the rendering of a particular font. @author georgopoulos.georgios(at)gmail.com
org.jfree.fonts.registry.FontMetrics
Font-metrics are computed for a certain font-size and style. There are no general metrics, which are assumed to be globally available.
The use of these font metrics is application dependent. As building these metrics usually is memory and CPU intensive, this must be done in an application specific context. You certainly want to cache the font data. @author Thomas Morgner
org.pentaho.reporting.libraries.fonts.registry.FontMetrics
Font-metrics are computed for a certain font-size and style. There are no general metrics, which are assumed to be globally available.
The use of these font metrics is application dependent. As building these metrics usually is memory and CPU intensive, this must be done in an application specific context. You certainly want to cache the font data. @author Thomas Morgner

Examples of org.gwt.mosaic.core.client.FontMetrics

   * Computes the global dialog base units.
   * 
   * @return a DialogBaseUnits object used globally
   */
  private DialogBaseUnits computeGlobalDialogBaseUnits() {
    final FontMetrics metrics = new FontMetrics();
    DOM.setStyleAttribute(metrics.getElement(), "whiteSpace", "nowrap");
    final Dimension boxSize = metrics.stringBoxSize(averageCharWidthTestString);
    return new DialogBaseUnits(boxSize.width
        / averageCharWidthTestString.length(), boxSize.height);
  }

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Examples of org.jfree.fonts.registry.FontMetrics

  {
    final FontSpecification fontSpecification =
        layoutContext.getFontSpecification();
    final OutputProcessorMetaData outputMetaData =
        layoutProcess.getOutputMetaData();
    final FontMetrics fontMetrics =
        outputMetaData.getFontMetrics(fontSpecification);
    return new VariableFontSizeProducer(fontMetrics);
  }

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

      final StaticBoxLayoutProperties staticBoxLayoutProperties = writeContext.getStaticBoxLayoutProperties();
      long spaceWidth = staticBoxLayoutProperties.getSpaceWidth();
      if (spaceWidth == 0)
      {
        // Space has not been computed yet.
        final FontMetrics fontMetrics = metaData.getFontMetrics(writeContext.getStyleSheet());
        spaceWidth = fontMetrics.getCharWidth(' ');
        staticBoxLayoutProperties.setSpaceWidth(spaceWidth);
      }


      if ((next.getNodeType() & LayoutNodeTypes.MASK_BOX) == LayoutNodeTypes.MASK_BOX)
      {

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

                                                    final boolean embedded,
                                                    final boolean antiAliasing) throws IllegalArgumentException
  {
    try
    {
      final FontMetrics metrics = super.getFontMetrics(fontFamily, fontSize, bold, italics, encoding, embedded,
          antiAliasing);
      if (metrics instanceof LegacyFontMetrics)
      {
        final LegacyFontMetrics lm = (LegacyFontMetrics) metrics;
        return (BaseFontFontMetrics) lm.getParent();

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

    lookupKey.setFontFamily(fontFamily);
    lookupKey.setFontSize(fontSize);
    lookupKey.setBold(bold);
    lookupKey.setItalics(italics);


    final FontMetrics cached = (FontMetrics) fontMetricsCache.get(lookupKey);
    if (cached != null)
    {
      return cached;
    }


    final FontRegistry registry = getFontRegistry();
    FontFamily family = registry.getFontFamily(fontFamily);
    if (family == null)
    {
      AbstractOutputProcessorMetaData.logger.warn("Unable to lookup the font family: " + fontFamily);


      // Get the default font name
      final String fallBack = getNormalizedFontFamilyName(null);
      if (fallBack == null)
      {
        // If this case happens, the output-processor meta-data does not provide a sensible
        // fall-back value. As we cannot continue without a font, we fail here instead of
        // waiting for a NullPointer or other weird error later.
        throw new IllegalArgumentException("No default family defined, aborting.");
      }


      family = registry.getFontFamily(fallBack);
      if (family == null)
      {
        // If this case happens, the output-processor meta-data does not provide a sensible
        // fall-back value. As we cannot continue without a font, we fail here instead of
        // waiting for a NullPointer or other weird error later.
        throw new IllegalArgumentException("Default family is invalid. Aborting.");
      }
    }




    reusableFontContext.setAntiAliased(antiAliasing);
    reusableFontContext.setFontSize(fontSize);
    reusableFontContext.setEncoding(encoding);
    reusableFontContext.setEmbedded(embedded);


    final FontRecord record = family.getFontRecord(bold, italics);
    final FontMetrics fm = getFontStorage().getFontMetrics(record.getIdentifier(), reusableFontContext);
    if (fm == null)
    {
      // If this case happens, then the previous steps of mapping the font name into sensible
      // defaults failed. The font-system's font-registry is not in sync with the actual font-metrics
      // provider (which indicates that the LibFonts font-system implementation is invalid).

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

    return fm;
  }


  public ExtendedBaselineInfo getBaselineInfo(final int codePoint, final StyleSheet styleSheet)
  {
    final FontMetrics fontMetrics = getFontMetrics(styleSheet);
    if (fontMetrics.isUniformFontMetrics())
    {
      final String fontFamily = getNormalizedFontFamilyName((String) styleSheet.getStyleProperty(TextStyleKeys.FONT));
      if (fontFamily == null)
      {
        // If this case happens, the stylesheet is not implemented correctly. At that point,
        // we have to assume that the whole engine is no longer behaving valid and therefore we
        // abort early.
        throw new IllegalArgumentException("No valid font family specified.");
      }


      final double fontSize = styleSheet.getDoubleStyleProperty
          (TextStyleKeys.FONTSIZE, defaultFontSize);


      final boolean antiAliasing = RenderUtility.isFontSmooth(styleSheet, this);
      final String encoding = (String) styleSheet.getStyleProperty(TextStyleKeys.FONTENCODING);
      final boolean embedded =
          isFeatureSupported(OutputProcessorFeature.EMBED_ALL_FONTS) ||
              styleSheet.getBooleanStyleProperty(TextStyleKeys.EMBEDDED_FONT);
      final boolean bold = styleSheet.getBooleanStyleProperty(TextStyleKeys.BOLD, false);
      final boolean italics = styleSheet.getBooleanStyleProperty(TextStyleKeys.ITALIC, false);


      lookupKey.setAntiAliased(antiAliasing);
      lookupKey.setEncoding(encoding);
      lookupKey.setEmbedded(embedded);
      lookupKey.setFontFamily(fontFamily);
      lookupKey.setFontSize(fontSize);
      lookupKey.setBold(bold);
      lookupKey.setItalics(italics);


      final ExtendedBaselineInfo cached = (ExtendedBaselineInfo) baselinesCache.get(lookupKey);
      if (cached != null)
      {
        return cached;
      }
    }
    final ExtendedBaselineInfo baselineInfo = TextUtility.createBaselineInfo('x', fontMetrics, null);
    if (fontMetrics.isUniformFontMetrics())
    {
      baselinesCache.put(new FontMetricsKey(lookupKey), baselineInfo);
    }
    return baselineInfo;
  }

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

        isFeatureSupported(OutputProcessorFeature.EMBED_ALL_FONTS) ||
            styleSheet.getBooleanStyleProperty(TextStyleKeys.EMBEDDED_FONT);
    final boolean bold = styleSheet.getBooleanStyleProperty(TextStyleKeys.BOLD, false);
    final boolean italics = styleSheet.getBooleanStyleProperty(TextStyleKeys.ITALIC, false);


    final FontMetrics metrics = getFontMetrics(fontFamily, fontSize, bold, italics, encoding, embedded, antiAliasing);
    fontMetricsByStyleCache.put(key, new StyleCacheEntry(styleSheet.getChangeTracker(), metrics));
    return metrics;
  }

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Examples of org.pentaho.reporting.libraries.fonts.registry.FontMetrics

                                                    final boolean embedded,
                                                    final boolean antiAliasing) throws IllegalArgumentException
  {
    try
    {
      final FontMetrics metrics = super.getFontMetrics(fontFamily, fontSize, bold, italics, encoding, embedded,
          antiAliasing);
      if (metrics instanceof LegacyFontMetrics)
      {
        final LegacyFontMetrics lm = (LegacyFontMetrics) metrics;
        return (BaseFontFontMetrics) lm.getParent();

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