com.itextpdf.layout.font.FontSet Maven / Gradle / Ivy
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2023 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
* A FontSet instance could be shared for multiple threads.
* However FontSet filling is not thread safe operation.
*
* @see FontProvider
*/
public final class FontSet {
// FontSet MUST be final to avoid overriding #add(FontInfo) method or remove functionality.
private static final AtomicLong lastId = new AtomicLong();
// Due to new logic HashSet can be used instead of List.
// But FontInfo with or without alias will be the same FontInfo.
private final Set fonts = new LinkedHashSet<>();
private final Map fontPrograms = new HashMap<>();
private final long id;
/**
* Creates a new instance of {@link FontSet}.
*/
public FontSet() {
this.id = lastId.incrementAndGet();
}
/**
* Add all the fonts in a directory and possibly its subdirectories.
*
* @param dir path to directory.
* @param scanSubdirectories recursively scan subdirectories if {@code true}.
* @return number of added fonts.
*/
public int addDirectory(String dir, boolean scanSubdirectories) {
int count = 0;
String[] files = FileUtil.listFilesInDirectory(dir, scanSubdirectories);
if (files == null)
return 0;
for (String file : files) {
try {
String suffix = file.length() < 4 ? null : file.substring(file.length() - 4).toLowerCase();
if (".afm".equals(suffix) || ".pfm".equals(suffix)) {
// Add only Type 1 fonts with matching .pfb files.
String pfb = file.substring(0, file.length() - 4) + ".pfb";
if (FileUtil.fileExists(pfb) && addFont(file)) {
count++;
}
} else if ((".ttf".equals(suffix) || ".otf".equals(suffix) || ".ttc".equals(suffix))
&& addFont(file)) {
count++;
}
} catch (Exception ignored) {
}
}
return count;
}
/**
* Add all the fonts in a directory.
*
* @param dir path to directory.
* @return number of added fonts.
*/
public int addDirectory(String dir) {
return addDirectory(dir, false);
}
/**
* Add not supported for auto creating FontPrograms.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontProgram {@link FontProgram}
* @param encoding FontEncoding for creating {@link com.itextpdf.kernel.font.PdfFont}
* @param alias font alias.
* @param unicodeRange sets the specific range of characters to be used from the font
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(FontProgram fontProgram, String encoding, String alias, Range unicodeRange) {
if (fontProgram == null) {
return false;
}
if (fontProgram instanceof Type3Font) {
Logger logger = LoggerFactory.getLogger(FontSet.class);
logger.error(IoLogMessageConstant.TYPE3_FONT_CANNOT_BE_ADDED);
return false;
}
FontInfo fi = FontInfo.create(fontProgram, encoding, alias, unicodeRange);
if (addFont(fi)) {
fontPrograms.put(fi, fontProgram);
return true;
} else {
return false;
}
}
/**
* Add not supported for auto creating FontPrograms.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontProgram {@link FontProgram}
* @param encoding FontEncoding for creating {@link com.itextpdf.kernel.font.PdfFont}
* @param alias font alias.
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(FontProgram fontProgram, String encoding, String alias) {
return addFont(fontProgram, encoding, alias, null);
}
/**
* Add not supported for auto creating FontPrograms.
*
* @param fontProgram {@link FontProgram}
* @param encoding FontEncoding for creating {@link com.itextpdf.kernel.font.PdfFont}.
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(FontProgram fontProgram, String encoding) {
return addFont(fontProgram, encoding, null);
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontPath path to font data.
* @param encoding preferred font encoding.
* @param alias font alias, will replace original font family.
* @param unicodeRange sets the specific range of characters to be used from the font
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(String fontPath, String encoding, String alias, Range unicodeRange) {
return addFont(FontInfo.create(fontPath, encoding, alias, unicodeRange));
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontPath path to font data.
* @param encoding preferred font encoding.
* @param alias font alias.
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(String fontPath, String encoding, String alias) {
return addFont(fontPath, encoding, alias, null);
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* @param fontPath path to font data.
* @param encoding preferred font encoding.
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(String fontPath, String encoding) {
return addFont(FontInfo.create(fontPath, encoding, null, null));
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontData font data.
* @param encoding preferred font encoding.
* @param alias font alias.
* @param unicodeRange sets the specific range of characters to be used from the font
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(byte[] fontData, String encoding, String alias, Range unicodeRange) {
return addFont(FontInfo.create(fontData, encoding, alias, unicodeRange));
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontData font data.
* @param encoding preferred font encoding.
* @param alias font alias.
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(byte[] fontData, String encoding, String alias) {
return addFont(fontData, encoding, alias, null);
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
*
* @param fontData font data.
* @param encoding preferred font encoding.
* @return true, if font was successfully added, otherwise false.
* @see com.itextpdf.io.font.PdfEncodings
*/
public boolean addFont(byte[] fontData, String encoding) {
return addFont(FontInfo.create(fontData, encoding, null, null));
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
* {@link FontProvider#getDefaultEncoding(FontProgram)} will be used to determine encoding.
*
* @param fontPath path to font data.
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(String fontPath) {
return addFont(fontPath, null, null);
}
/**
* Creates {@link FontInfo}, fetches {@link com.itextpdf.io.font.FontProgramDescriptor}
* and adds just created {@link FontInfo} to {@link FontSet}.
* {@link FontProvider#getDefaultEncoding(FontProgram)} will be used to determine encoding.
*
* @param fontData font data.
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(byte[] fontData) {
return addFont(fontData, null, null);
}
/**
* Adds {@link FontInfo} with alias. Could be used to fill temporary font set.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontInfo font info.
* @param alias font alias.
* @param unicodeRange sets the specific range of characters to be used from the font
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(FontInfo fontInfo, String alias, Range unicodeRange) {
return addFont(FontInfo.create(fontInfo, alias, unicodeRange));
}
/**
* Adds {@link FontInfo} with alias. Could be used to fill temporary font set.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
* Alias will replace original font family in font selector algorithm.
*
* @param fontInfo font info.
* @param alias font alias.
* @return true, if font was successfully added, otherwise false.
*/
public boolean addFont(FontInfo fontInfo, String alias) {
return addFont(fontInfo, alias, null);
}
/**
* Adds {@link FontInfo}. Could be used to fill temporary font set.
*
* Note, {@link FontInfo#getAlias()} do not taken into account in {@link FontInfo#equals}.
* The same font with different alias will not be replaced.
*
* @param fontInfo font info.
* @return true, if font was successfully added, otherwise false.
*/
public final boolean addFont(FontInfo fontInfo) {
// This method MUST be final, to avoid inconsistency with FontSelectorCache.
// (Yes, FontSet is final. Double check.)
if (fontInfo != null && !fonts.contains(fontInfo)) {
// NOTE! We SHALL NOT replace font, because it will influence on FontSelectorCache.
// FontSelectorCache reset cache ONLY if number of fonts has been changed,
// while replacing will modify list of fonts without size change.
fonts.add(fontInfo);
return true;
}
return false;
}
/**
* Search in existed fonts for PostScript name or full font name.
*
* Note, this method has O(n) complexity.
*
* @param fontName PostScript or full name.
* @return true, if {@link FontSet} contains font with given name.
*/
public boolean contains(String fontName) {
if (fontName == null || fontName.length() == 0) {
return false;
}
fontName = fontName.toLowerCase();
for (FontInfo fi : getFonts()) {
if (fontName.equals(fi.getDescriptor().getFullNameLowerCase())
|| fontName.equals(fi.getDescriptor().getFontNameLowerCase())) {
return true;
}
}
return false;
}
/**
* Search in existed fonts for PostScript name or full font name.
*
* Note, this method has O(n) complexity.
*
* @param fontName PostScript or full name.
* @return Collection of {@link FontInfo} from set of fonts with given PostScript or full name.
*/
public Collection get(String fontName) {
if (fontName == null || fontName.length() == 0) {
return Collections.emptyList();
}
fontName = fontName.toLowerCase();
List list = new ArrayList<>();
for (FontInfo fi : getFonts()) {
if (fontName.equals(fi.getDescriptor().getFullNameLowerCase())
|| fontName.equals(fi.getDescriptor().getFontNameLowerCase())) {
list.add(fi);
}
}
return list;
}
/**
* Gets available fonts.
*
* Note, the collection is unmodifiable.
*
* @return set of all available fonts
*/
public Collection getFonts() {
return getFonts(null);
}
/**
* Gets union of available and temporary fonts.
*
* Note, the collection is unmodifiable.
*
* @param additionalFonts set of temporary fonts
* @return set of all available and temporary fonts
*/
public Collection getFonts(FontSet additionalFonts) {
return new FontSetCollection(fonts, additionalFonts != null ? additionalFonts.fonts : null);
}
/**
* Returns {@code true} if this set contains no elements.
*
* @return {@code true} if this set contains no elements
*/
public boolean isEmpty() {
return size() == 0;
}
/**
* Returns the number of elements in this set.
*
* @return the number of elements in this set
*/
public int size() {
return fonts.size();
}
//region Internal members
long getId() {
return id;
}
FontProgram getFontProgram(FontInfo fontInfo) {
return fontPrograms.get(fontInfo);
}
//endregion
}