/**
* Returns the bounds for the character with the maximum bounds in the specified <code>Graphics
* </code> context.
*
* @param context the specified <code>Graphics</code> context
* @return a <code>Rectangle2D</code> that is the bounding box for the character with the maximum
* bounds.
* @see java.awt.Font#getMaxCharBounds(java.awt.font.FontRenderContext)
*/
public Rectangle2D getMaxCharBounds(final Graphics context) {
final Font baseFont = getFont();
final String name = baseFont.getName();
final org.pentaho.reporting.libraries.fonts.registry.FontMetrics fontMetrics =
metaData.getFontMetrics(
name,
baseFont.getSize2D(),
baseFont.isBold(),
baseFont.isItalic(),
"UTF-8",
false,
false);
return new Rectangle2D.Double(
0,
-StrictGeomUtility.toExternalValue(fontMetrics.getMaxAscent()),
StrictGeomUtility.toExternalValue(fontMetrics.getMaxCharAdvance()),
StrictGeomUtility.toExternalValue(
fontMetrics.getMaxAscent() + fontMetrics.getMaxDescent() + fontMetrics.getLeading()));
}
public ScalableTrueTypeFontMetrics(final TrueTypeFont font) throws IOException {
if (font == null) {
throw new NullPointerException("The font must not be null");
}
this.font = font;
final FontHeaderTable head = (FontHeaderTable) font.getTable(FontHeaderTable.TABLE_ID);
if (head == null) {
throw new IllegalStateException("Font has no HEAD table and is not a usable font.");
}
final int unitsPerEm = head.getUnitsPerEm();
final long strictScaleFactor = StrictGeomUtility.toInternalValue(1);
maxAscent = (strictScaleFactor * head.getyMax()) / unitsPerEm;
maxDescent = (strictScaleFactor * -head.getyMin()) / unitsPerEm;
// prefer the mac table, as at least for the old version of Arial
// I use, the mac table is consistent with the Java-Font-Metrics
final HorizontalHeaderTable hhea =
(HorizontalHeaderTable) font.getTable(HorizontalHeaderTable.TABLE_ID);
if (hhea == null) {
throw new IllegalStateException("The font has no HHEA table and is not a valid font.");
}
// Mac metrics must always be present..
createMacMetrics(hhea, unitsPerEm, strictScaleFactor);
final OS2Table table = (OS2Table) font.getTable(OS2Table.TABLE_ID);
if (table != null) {
computeWindowsMetrics(table, unitsPerEm, strictScaleFactor);
}
final PostscriptInformationTable postTable =
(PostscriptInformationTable) font.getTable(PostscriptInformationTable.TABLE_ID);
if (postTable != null) {
this.italicAngle = StrictGeomUtility.toInternalValue(postTable.getItalicAngle());
this.underlinePosition =
getAscent()
+ (strictScaleFactor
* (-postTable.getUnderlinePosition()
+ (postTable.getUnderlineThickness() / 2)))
/ unitsPerEm;
}
font.dispose();
}
private void createMacMetrics(
final HorizontalHeaderTable hhea, final int unitsPerEm, final long scaleFactor) {
this.maxCharAdvance = (scaleFactor * hhea.getMaxAdvanceWidth()) / unitsPerEm;
this.ascent = (scaleFactor * hhea.getAscender()) / unitsPerEm;
this.descent = (scaleFactor * -hhea.getDescender()) / unitsPerEm;
this.leading = (scaleFactor * hhea.getLineGap()) / unitsPerEm;
this.xHeight =
(long)
(ascent * LibFontsDefaults.DEFAULT_XHEIGHT_SIZE / LibFontsDefaults.DEFAULT_ASCENT_SIZE);
this.strikethroughPosition =
getMaxAscent() - (long) (this.xHeight * LibFontsDefaults.DEFAULT_STRIKETHROUGH_POSITION);
this.italicAngle =
StrictGeomUtility.toInternalValue(
-StrictMath.atan2(hhea.getCaretSlopeRun(), hhea.getCaretSlopeRise()) * 180 / Math.PI);
}
static {
final long value = StrictGeomUtility.toInternalValue(1);
conversionFactor =
value / org.pentaho.reporting.libraries.fonts.tools.StrictGeomUtility.toInternalValue(1);
}