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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFont.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFont.java | 882 |
1 files changed, 882 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFont.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFont.java new file mode 100644 index 000000000..6c2193b94 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/opentype/OpenTypeFont.java @@ -0,0 +1,882 @@ +/* OpenTypeFont.java -- Manages OpenType and TrueType fonts. + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.java.awt.font.opentype; + +import java.awt.Font; +import java.awt.FontFormatException; +import java.awt.font.FontRenderContext; +import java.awt.font.GlyphVector; +import java.awt.font.OpenType; +import java.awt.geom.AffineTransform; +import java.awt.geom.GeneralPath; +import java.awt.geom.Point2D; +import java.nio.ByteBuffer; +import java.text.CharacterIterator; +import java.util.Locale; + +import gnu.java.awt.font.FontDelegate; +import gnu.java.awt.font.GNUGlyphVector; +import gnu.java.awt.font.autofit.AutoHinter; +import gnu.java.awt.font.opentype.truetype.TrueTypeScaler; +import gnu.java.awt.font.opentype.truetype.Zone; + + +/** + * A font that takes its data from OpenType or TrueType font tables. + * + * <p>OpenType is an extension of the TrueType font format. In addition + * to tables for names, kerning or layout, it also stores the shapes + * of individual glyphs. Three formats are recognized for glyphs: + * Quadratic splines (classic TrueType), cubic splines (PostScript), + * and bitmaps. + * + * @see <a + * href="http://partners.adobe.com/asn/tech/type/opentype/">Adobe’s + * OpenType specification</a> + * + * @see <a + * href="http://developer.apple.com/fonts/TTRefMan/">Apple’s</code> + * TrueType specification</a> + * + * @author Sascha Brawer (brawer@dandelis.ch) + */ +public final class OpenTypeFont + implements FontDelegate +{ + static final int TAG_OTTO = 0x4f54544f; // 'OTTO' + static final int TAG_SFNT = 0x73666e74; // 'sfnt' + static final int TAG_TRUE = 0x74727565; // 'true' + static final int TAG_TTCF = 0x74746366; // 'ttcf' + static final int TAG_ZAPF = 0x5a617066; // 'Zapf' + + + /** + * A buffer containing the font data. Note that this may well be an + * instance of the subclass MappedByteBuffer, in which case the + * virtual memory subsystem can more efficiently handle requests for + * font data. This is especially recommended for large font files + * that contain many glyphs that are rarely accessed. + */ + ByteBuffer buf; + + + /** + * The number of glyphs in this font. + */ + final int numGlyphs; + + int[] tableTag, tableStart, tableLength; + + + /** + * The version of the font in 16.16 fixed-point encoding, for + * example 0x00010000 for version 1.0. There are also two special + * version IDs used by fonts for Apple Macintosh, namely 'true' + * (0x74727565) and 'typ1'. OpenType fonts sometimes have 'OTTO' as + * their version. + */ + private int version; + + + /** + * The number of font units per em. For fonts with TrueType + * outlines, this is usually a power of two (such as 2048). For + * OpenType fonts with PostScript outlines, other values are + * acceptable (such as 1000). + */ + public int unitsPerEm; + + + /** + * A factor to convert font units into ems. This value is <code>1 / + * unitsPerEm</code>. + */ + private float emsPerUnit; + + + /** + * The scaler to which the actual scaling work is delegated. + */ + private Scaler scaler; + + + /** + * A delegate object for mapping Unicode UCS-4 codepoints to glyph + * IDs. + */ + private CharGlyphMap cmap; + + + /** + * A delegate object for providing a name for each glyph. + */ + private GlyphNamer glyphNamer; + + private Hinter hinter; + + /** + * Constructs an OpenType or TrueType font. + * + * @param buf a buffer with the contents of the font file. It is + * recommended to use a <code>MappedByteBuffer</code> for very + * large font files. + * + * @param offsetTablePosition the position of the OpenType offset + * table in the font file. The offset table of most OpenType and + * TrueType fonts starts at position 0. However, so-called TrueType + * Collections support multiple OpenType fonts in a single file, + * which allows sharing some glyphs between fonts. If many glyphs + * are shared (for example all the Kanji glyphs between multiple + * Japanese fonts), the space savings can be considerable. In that + * case, the offset table of each individual font would start at its + * own position. + * + * @throws java.awt.FontFormatException if the font data is + * not in OpenType or TrueType format. + */ + OpenTypeFont(ByteBuffer buf, int offsetTablePosition) + throws FontFormatException + { + int numTables, searchRange, entrySelector, rangeShift; + + //buf = buf.duplicate(); + this.buf = buf; + buf.limit(buf.capacity()); + buf.position(offsetTablePosition); + + /* Check that the font data is in a supported format. */ + version = buf.getInt(); + switch (version) + { + case 0x00010000: // Microsoft TrueType + case OpenType.TAG_TYP1: // Adobe PostScript embeded in Apple SFNT ('typ1') + case TAG_SFNT: // Apple TrueType + case TAG_TRUE: // Apple TrueType + case TAG_OTTO: // OpenType + break; + + default: + throw new FontFormatException("not in OpenType or TrueType format"); + } + + numTables = buf.getShort(); + searchRange = buf.getShort(); + entrySelector = buf.getShort(); + rangeShift = buf.getShort(); + + tableTag = new int[numTables]; + tableStart = new int[numTables]; + tableLength = new int[numTables]; + int lastTag = 0; + for (int i = 0; i < numTables; i++) + { + tableTag[i] = buf.getInt(); + if (lastTag >= tableTag[i]) + throw new FontFormatException("unordered OpenType table"); + + buf.getInt(); // ignore checksum + tableStart[i] = buf.getInt(); + tableLength[i] = buf.getInt(); + + //System.out.println(tagToString(tableTag[i]) + ", " + tableLength[i]); + } + + ByteBuffer head = getFontTable(OpenType.TAG_HEAD); + if ((head.getInt(0) != 0x00010000) + || (head.getInt(12) != 0x5f0f3cf5)) + throw new FontFormatException("unsupported head version"); + + unitsPerEm = head.getChar(18); + emsPerUnit = 1.0f / (float) unitsPerEm; + + + ByteBuffer maxp = getFontTable(OpenType.TAG_MAXP); + int maxpVersion = maxp.getInt(0); + switch (maxpVersion) + { + case 0x00005000: /* version 0.5, with wrong fractional part */ + numGlyphs = maxp.getChar(4); + break; + + case 0x00010000: /* version 1.0 */ + numGlyphs = maxp.getChar(4); + scaler = new TrueTypeScaler(unitsPerEm, + getFontTable(OpenType.TAG_HHEA), + getFontTable(OpenType.TAG_HMTX), + getFontTable(OpenType.TAG_VHEA), + getFontTable(OpenType.TAG_VMTX), + maxp, + getFontTable(OpenType.TAG_CVT), + getFontTable(OpenType.TAG_FPGM), + /* loca format */ head.getShort(50), + getFontTable(OpenType.TAG_LOCA), + getFontTable(OpenType.TAG_GLYF), + getFontTable(OpenType.TAG_PREP)); + break; + + default: + throw new FontFormatException("unsupported maxp version"); + } + } + + + /** + * Determines the index of a table into the offset table. The + * result can be used to find the offset and length of a table, as + * in <code>tableStart[getTableIndex(TAG_NAME)]</code>. + * + * @param tag the table identifier, for instance + * <code>OpenType.TAG_NAME</code>. + * + * @return the index of that table into the offset table, or + * -1 if the font does not contain the table specified by + * <code>tag</code>. + */ + private int getTableIndex(int tag) + { + /* FIXME: Since the font specification requires tableTag[] to be + * ordered, one should do binary search here. + */ + for (int i = 0; i < tableTag.length; i++) + if (tableTag[i] == tag) + return i; + return -1; + } + + + + /** + * Returns the name of the family to which this font face belongs, + * for example <i>“Univers”</i>. + * + * @param locale the locale for which to localize the name. + * + * @return the family name. + */ + public synchronized String getFamilyName(Locale locale) + { + String name; + + if (locale == null) + locale = Locale.getDefault(); + + name = getName(NameDecoder.NAME_FAMILY, locale); + if (name == null) + name = getName(NameDecoder.NAME_FAMILY, Locale.ENGLISH); + if (name == null) + name = getName(NameDecoder.NAME_FAMILY, /* any language */ null); + if (name == null) + name = getName(NameDecoder.NAME_FULL, locale); + if (name == null) + name = getName(NameDecoder.NAME_FULL, /* any language */ null); + return name; + } + + + /** + * Returns the name of this font face inside the family, for example + * <i>“Light”</i>. + * + * @param locale the locale for which to localize the name. + * + * @return the name of the face inside its family. + */ + public synchronized String getSubFamilyName(Locale locale) + { + String name; + + if (locale == null) + locale = Locale.getDefault(); + + name = getName(NameDecoder.NAME_SUBFAMILY, locale); + if (name == null) + { + name = getName(NameDecoder.NAME_SUBFAMILY, Locale.ENGLISH); + if ("Regular".equals(name)) + name = null; + } + + if (name == null) + { + String lang = locale.getLanguage(); + if ("de".equals(lang)) + name = "Standard"; + else if ("fr".equals(lang)) + name = "Standard"; + else if ("it".equals(lang)) + name = "Normale"; + else if ("nl".equals(lang)) + name = "Normaal"; + else if ("fi".equals(lang)) + name = "Normaali"; + else if ("sv".equals(lang)) + name = "Normal"; + else + name = "Regular"; + } + + return name; + } + + + + /** + * Returns the full name of this font face, for example + * <i>“Univers Light”</i>. + * + * @param locale the locale for which to localize the name. + * + * @return the face name. + */ + public synchronized String getFullName(Locale locale) + { + String name; + + if (locale == null) + locale = Locale.getDefault(); + + name = getName(NameDecoder.NAME_FULL, locale); + if (name == null) + name = getName(NameDecoder.NAME_FULL, Locale.ENGLISH); + if (name == null) + name = getName(NameDecoder.NAME_FULL, /* any language */ null); + + return name; + } + + + /** + * Returns the PostScript name of this font face, for example + * <i>“Univers-Light”</i>. + * + * @return the PostScript name, or <code>null</code> if the font + * does not provide a PostScript name. + */ + public synchronized String getPostScriptName() + { + return getName(NameDecoder.NAME_POSTSCRIPT, /* any language */ null); + } + + + /** + * Returns the number of glyphs in this font face. + */ + public int getNumGlyphs() + { + /* No synchronization is needed because the number of glyphs is + * set in the constructor, and it cannot change during the + * lifetime of the object. + */ + return numGlyphs; + } + + + /** + * Returns the index of the glyph which gets displayed if the font + * cannot map a Unicode code point to a glyph. Many fonts show this + * glyph as an empty box. + */ + public int getMissingGlyphCode() + { + /* No synchronization is needed because the result is constant. */ + return 0; + } + + + /** + * The font’s name table, or <code>null</code> if this + * table has not yet been accessed. + */ + private ByteBuffer nameTable; + + + /** + * Extracts a String from the font’s name table. + * + * @param name the numeric TrueType or OpenType name ID. + * + * @param locale the locale for which names shall be localized, or + * <code>null</code> if the locale does mot matter because the name + * is known to be language-independent (for example, because it is + * the PostScript name). + */ + private String getName(int name, Locale locale) + { + if (nameTable == null) + nameTable = getFontTable(OpenType.TAG_NAME); + return NameDecoder.getName(nameTable, name, locale); + } + + + /** + * Returns the version of the font. + * + * @see java.awt.font.OpenType#getVersion + * + * @return the version in 16.16 fixed-point encoding, for example + * 0x00010000 for version 1.0. + */ + public int getVersion() + { + /* No synchronization is needed because the version is set in the + * constructor, and it cannot change during the lifetime of the + * object. + */ + return version; + } + + + /** + * Creates a view buffer for an OpenType table. The caller can + * access the returned buffer without needing to synchronize access + * from multiple threads. + * + * @param tag the table identifier, for example + * <code>OpenType.GLYF</code>. + * + * @return a slice of the underlying buffer containing the table, or + * <code>null</code> if the font does not contain the requested + * table. + */ + public synchronized ByteBuffer getFontTable(int tag) + { + int index, start, len; + ByteBuffer result; + + index = getTableIndex(tag); + if (index < 0) + return null; + + start = tableStart[index]; + len = tableLength[index]; + buf.limit(start + len).position(start); + result = buf.slice(); + result.limit(len); + return result; + } + + + /** + * Returns the size of one of the tables in the font, + * or -1 if the table does not exist. + */ + public int getFontTableSize(int tag) + { + int index = getTableIndex(tag); + if (index == -1) + return index; + return tableLength[index]; + } + + + private CharGlyphMap getCharGlyphMap() + { + if (cmap != null) + return cmap; + + synchronized (this) + { + if (cmap == null) + { + int index = getTableIndex(OpenType.TAG_CMAP); + int start = tableStart[index]; + buf.limit(start + tableLength[index]).position(start); + cmap = CharGlyphMap.forTable(buf); + } + return cmap; + } + } + + + + /** + * Looks up a glyph in the font’s <code>cmap</code> tables, + * without performing any glyph substitution or reordering. Because + * of this limitation, this method cannot be used for script systems + * that need advanced glyph mapping, such as Arabic, Korean, or even + * Latin with exotic accents. + * + * <p>It is safe to call this method from any thread. + * + * @param ucs4 the Unicode codepoint in the 32-bit Unicode character + * set UCS-4. Because UTF-16 surrogates do not correspond to a single + * glyph, it does not make sense to pass them here. + * + * @return the glyph index, or zero if the font does not contain + * a glyph for the specified codepoint. + */ + public int getGlyph(int ucs4) + { + return getCharGlyphMap().getGlyph(ucs4); + } + + + /** + * Creates a GlyphVector by mapping each character in a + * CharacterIterator to the corresponding glyph. + * + * <p>The mapping takes only the font’s <code>cmap</code> + * tables into consideration. No other operations (such as glyph + * re-ordering, composition, or ligature substitution) are + * performed. This means that the resulting GlyphVector will not be + * correct for text in languages that have complex + * character-to-glyph mappings, such as Arabic, Hebrew, Hindi, or + * Thai. + * + * @param font the font object that the created GlyphVector + * will return when it gets asked for its font. This argument is + * needed because the public API works with java.awt.Font, + * not with some private delegate like OpenTypeFont. + * + * @param frc the font rendering parameters that are used for + * measuring glyphs. The exact placement of text slightly depends on + * device-specific characteristics, for instance the device + * resolution or anti-aliasing. For this reason, any measurements + * will only be accurate if the passed + * <code>FontRenderContext</code> correctly reflects the relevant + * parameters. Hence, <code>frc</code> should be obtained from the + * same <code>Graphics2D</code> that will be used for drawing, and + * any rendering hints should be set to the desired values before + * obtaining <code>frc</code>. + * + * @param ci a CharacterIterator for iterating over the + * characters to be displayed. + */ + public synchronized GlyphVector createGlyphVector(Font font, + FontRenderContext frc, + CharacterIterator ci) + { + // Initialize hinter if necessary. + checkHinter(FontDelegate.FLAG_FITTED); + + CharGlyphMap cmap; + int numGlyphs; + int[] glyphs; + int glyph; + int c; + + cmap = getCharGlyphMap(); + numGlyphs = ci.getEndIndex() - ci.getBeginIndex(); + glyphs = new int[numGlyphs]; + glyph = 0; + for (c = ci.first(); c != CharacterIterator.DONE; c = ci.next()) + { + /* handle surrogate pairs */ + if (c >> 10 == 0x36) // U+D800 .. U+DBFF: High surrogate + c = (((c & 0x3ff) << 10) | (ci.next() & 0x3ff)) + 0x10000; + glyphs[glyph] = cmap.getGlyph(c); + glyph += 1; + } + + /* If we had surrogates, the allocated array is too large. + * Because this will occur very rarely, it seems acceptable to + * re-allocate a shorter array and copy the contents around. + */ + if (glyph != numGlyphs) + { + int[] newGlyphs = new int[glyph]; + System.arraycopy(glyphs, 0, newGlyphs, 0, glyph); + glyphs = newGlyphs; + } + + return new GNUGlyphVector(this, font, frc, glyphs); + } + + /** + * Returns the glyph code for the specified character. + * + * @param c the character to map + * + * @return the glyph code + */ + public int getGlyphIndex(int c) + { + return getCharGlyphMap().getGlyph(c); + } + + /** + * Determines the advance width for a glyph. + * + * @param glyphIndex the glyph whose advance width is to be + * determined. + * + * @param pointSize the point size of the font. + * + * @param transform a transform that is applied in addition to + * scaling to the specified point size. This is often used for + * scaling according to the device resolution. Those who lack any + * aesthetic sense may also use the transform to slant or stretch + * glyphs. + * + * @param antialias <code>true</code> for anti-aliased rendering, + * <code>false</code> for normal rendering. For hinted fonts, + * this parameter may indeed affect the result. + * + * @param fractionalMetrics <code>true</code> for fractional metrics, + * <code>false</code> for rounding the result to a pixel boundary. + * + * @param horizontal <code>true</code> for horizontal line layout, + * <code>false</code> for vertical line layout. + * + * @param advance a point whose <code>x</code> and <code>y</code> + * fields will hold the advance in each direction. It is possible + * that both values are non-zero, for example if + * <code>transform</code> is a rotation, or in the case of Urdu + * fonts. + */ + public synchronized void getAdvance(int glyphIndex, + float pointSize, + AffineTransform transform, + boolean antialias, + boolean fractionalMetrics, + boolean horizontal, + Point2D advance) + { + /* Delegate the measurement to the scaler. The synchronization is + * needed because the scaler is not synchronized. + */ + scaler.getAdvance(glyphIndex, pointSize, transform, + antialias, fractionalMetrics, horizontal, + advance); + } + + + /** + * Returns the shape of a glyph. + * + * @param glyph the glyph whose advance width is to be determined + * + * @param pointSize the point size of the font. + * + * @param transform a transform that is applied in addition to + * scaling to the specified point size. This is often used for + * scaling according to the device resolution. Those who lack any + * aesthetic sense may also use the transform to slant or stretch + * glyphs. + * + * @param antialias <code>true</code> for anti-aliased rendering, + * <code>false</code> for normal rendering. For hinted fonts, this + * parameter may indeed affect the result. + * + * @param fractionalMetrics <code>true</code> for fractional + * metrics, <code>false</code> for rounding the result to a pixel + * boundary. + * + * @return the scaled and grid-fitted outline of the specified + * glyph, or <code>null</code> for bitmap fonts. + */ + public synchronized GeneralPath getGlyphOutline(int glyph, + float pointSize, + AffineTransform transform, + boolean antialias, + boolean fractionalMetrics, + int flags) + { + /* The synchronization is needed because the scaler is not + * synchronized. + */ + checkHinter(flags); + return scaler.getOutline(glyph, pointSize, transform, + antialias, fractionalMetrics, hinter, flags); + } + + /** + * Fetches the raw glyph outline for the specified glyph index. This is used + * for the autofitter only ATM and is otherwise not usable for outside code. + * + * @param glyph the glyph index to fetch + * @param transform the transform to apply + * + * @return the raw outline of that glyph + */ + public synchronized Zone getRawGlyphOutline(int glyph, + AffineTransform transform) + { + return scaler.getRawOutline(glyph, transform); + } + + /** + * Returns a name for the specified glyph. This is useful for + * generating PostScript or PDF files that embed some glyphs of a + * font. + * + * <p><b>Names are not unique:</b> Under some rare circumstances, + * the same name can be returned for different glyphs. It is + * therefore recommended that printer drivers check whether the same + * name has already been returned for antoher glyph, and make the + * name unique by adding the string ".alt" followed by the glyph + * index.</p> + * + * <p>This situation would occur for an OpenType or TrueType font + * that has a <code>post</code> table of format 3 and provides a + * mapping from glyph IDs to Unicode sequences through a + * <code>Zapf</code> table. If the same sequence of Unicode + * codepoints leads to different glyphs (depending on contextual + * position, for example, or on typographic sophistication level), + * the same name would get synthesized for those glyphs. + * + * @param glyphIndex the glyph whose name the caller wants to + * retrieve. + */ + public synchronized String getGlyphName(int glyphIndex) + { + if (glyphNamer == null) + glyphNamer = GlyphNamer.forTables(numGlyphs, + getFontTable(OpenType.TAG_POST), + getFontTable(TAG_ZAPF)); + + return glyphNamer.getGlyphName(glyphIndex); + } + + + /** + * Determines the distance between the base line and the highest + * ascender. + * + * @param pointSize the point size of the font. + * + * @param transform a transform that is applied in addition to + * scaling to the specified point size. This is often used for + * scaling according to the device resolution. Those who lack any + * aesthetic sense may also use the transform to slant or stretch + * glyphs. + * + * @param antialiased <code>true</code> for anti-aliased rendering, + * <code>false</code> for normal rendering. For hinted fonts, + * this parameter may indeed affect the result. + * + * @param fractionalMetrics <code>true</code> for fractional metrics, + * <code>false</code> for rounding the result to a pixel boundary. + * + * @param horizontal <code>true</code> for horizontal line layout, + * <code>false</code> for vertical line layout. + * + * @return the ascent, which usually is a positive number. + */ + public synchronized float getAscent(float pointSize, + AffineTransform transform, + boolean antialiased, + boolean fractionalMetrics, + boolean horizontal) + { + return scaler.getAscent(pointSize, transform, + antialiased, fractionalMetrics, + horizontal); + } + + + /** + * Determines the distance between the base line and the lowest + * descender. + * + * @param pointSize the point size of the font. + * + * @param transform a transform that is applied in addition to + * scaling to the specified point size. This is often used for + * scaling according to the device resolution. Those who lack any + * aesthetic sense may also use the transform to slant or stretch + * glyphs. + * + * @param antialiased <code>true</code> for anti-aliased rendering, + * <code>false</code> for normal rendering. For hinted fonts, + * this parameter may indeed affect the result. + * + * @param fractionalMetrics <code>true</code> for fractional metrics, + * <code>false</code> for rounding the result to a pixel boundary. + * + * @param horizontal <code>true</code> for horizontal line layout, + * <code>false</code> for vertical line layout. + * + * @return the descent, which usually is a nagative number. + */ + public synchronized float getDescent(float pointSize, + AffineTransform transform, + boolean antialiased, + boolean fractionalMetrics, + boolean horizontal) + { + return scaler.getDescent(pointSize, transform, + antialiased, fractionalMetrics, + horizontal); + } + + + /** + * Converts a four-byte tag identifier into a String that can be + * displayed when debugging this class. + * + * @param tag the tag as an <code>int</code>. + * + * @return the tag in human-readable form, for example + * <code>name</code> or <code>glyf</code>. + */ + static String tagToString(int tag) + { + char[] c = new char[4]; + c[0] = (char) ((tag >> 24) & 0xff); + c[1] = (char) ((tag >> 16) & 0xff); + c[2] = (char) ((tag >> 8) & 0xff); + c[3] = (char) (tag & 0xff); + return new String(c); + } + + /** + * Checks if a hinter is installed and installs one when not. + */ + private void checkHinter(int flags) + { + // When another hinting impl gets added (maybe a true TrueType hinter) + // then add some options here. The Hinter interface might need to be + // tweaked. + if (hinter == null) + { + try + { + hinter = new AutoHinter(); + hinter.init(this); + } + catch (Exception ex) + { + // Protect from problems inside hinter. + hinter = null; + ex.printStackTrace(); + } + } + hinter.setFlags(flags); + } +} |