org.sejda.impl.sambox.util

Class FontUtils

java.lang.Object

org.sejda.impl.sambox.util.FontUtils

public final class FontUtils
extends Object

Utility to map from Sejda font definition to PDFBox.

Author:

Andrea Vacondio

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FontUtils.FontSubsetting Helper for subset fonts.

Field Summary

Fields

Modifier and Type	Field and Description
static org.sejda.sambox.pdmodel.font.PDFont	HELVETICA

Method Summary

Modifier and Type	Method and Description
static double	calculateBBoxHeight(String text, org.sejda.sambox.pdmodel.font.PDFont font)
static boolean	canDisplay(String text, org.sejda.sambox.pdmodel.font.PDFont font) Returns true if the given font can display the given text.
static boolean	canDisplaySpace(org.sejda.sambox.pdmodel.font.PDFont font)
static void	clearLoadedFontCache()
static void	clearLoadedFontCache(org.sejda.sambox.pdmodel.PDDocument document)
static org.sejda.sambox.pdmodel.font.PDFont	findFontFor(org.sejda.sambox.pdmodel.PDDocument document, String text)
static org.sejda.sambox.pdmodel.font.PDFont	fontOrFallback(String text, org.sejda.sambox.pdmodel.font.PDFont font, org.sejda.sambox.pdmodel.PDDocument document) Checks the text can be written with the given font, find a fallback font otherwise
static double	getSimpleStringWidth(String text, org.sejda.sambox.pdmodel.font.PDFont font, double fontSize) Calculates the width of the string using the given font.
static org.sejda.sambox.pdmodel.font.PDType1Font	getStandardType1Font(StandardType1Font st1Font) Mapping between Sejda and PDFBox standard type 1 fonts implementation
static boolean	isBold(org.sejda.sambox.pdmodel.font.PDFont font)
static boolean	isItalic(org.sejda.sambox.pdmodel.font.PDFont font)
static boolean	isOnlyWhitespace(String text) Check is given text contains only unicode whitespace characters
static org.sejda.sambox.pdmodel.font.PDFont	loadFont(org.sejda.sambox.pdmodel.PDDocument document, FontResource font)
static String	removeUnsupportedCharacters(String text, org.sejda.sambox.pdmodel.PDDocument doc)
static String	removeWhitespace(String text) Removes all unicode whitespace characters from the input string
static String	replaceUnsupportedCharacters(String text, org.sejda.sambox.pdmodel.PDDocument doc, String replacement)
static List<TextWithFont>	resolveFonts(String label, org.sejda.sambox.pdmodel.font.PDFont font, org.sejda.sambox.pdmodel.PDDocument document) Supports writing labels which require multiple fonts (eg: mixing thai and english words) Returns a list of text with associated font.
static List<String>	wrapLines(String rawLabel, org.sejda.sambox.pdmodel.font.PDFont font, float fontSize, double maxWidth, org.sejda.sambox.pdmodel.PDDocument document) Wraps the given text on multiple lines, if it does not fit within the given maxWidth It will try to determine if all text can be written with given font and find a fallback for parts that are not supported.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HELVETICA

public static org.sejda.sambox.pdmodel.font.PDFont HELVETICA

Method Detail

getStandardType1Font

public static org.sejda.sambox.pdmodel.font.PDType1Font getStandardType1Font(StandardType1Font st1Font)

Mapping between Sejda and PDFBox standard type 1 fonts implementation

Parameters:

st1Font -

Returns:

the PDFBox font.

fontOrFallback

public static org.sejda.sambox.pdmodel.font.PDFont fontOrFallback(String text,
                                                                  org.sejda.sambox.pdmodel.font.PDFont font,
                                                                  org.sejda.sambox.pdmodel.PDDocument document)

Checks the text can be written with the given font, find a fallback font otherwise

clearLoadedFontCache

public static void clearLoadedFontCache()

clearLoadedFontCache

public static void clearLoadedFontCache(org.sejda.sambox.pdmodel.PDDocument document)

loadFont

public static org.sejda.sambox.pdmodel.font.PDFont loadFont(org.sejda.sambox.pdmodel.PDDocument document,
                                                            FontResource font)

findFontFor

public static final org.sejda.sambox.pdmodel.font.PDFont findFontFor(org.sejda.sambox.pdmodel.PDDocument document,
                                                                     String text)

Parameters:

document -

text -

Returns:

a font capable of displaying the given string or null

isOnlyWhitespace

public static boolean isOnlyWhitespace(String text)

Check is given text contains only unicode whitespace characters

Parameters:

text -

Returns:

removeWhitespace

public static String removeWhitespace(String text)

Removes all unicode whitespace characters from the input string

Parameters:

text -

Returns:

canDisplaySpace

public static boolean canDisplaySpace(org.sejda.sambox.pdmodel.font.PDFont font)

canDisplay

public static boolean canDisplay(String text,
                                 org.sejda.sambox.pdmodel.font.PDFont font)

Returns true if the given font can display the given text. IMPORTANT: Ignores all whitespace in text.

calculateBBoxHeight

public static double calculateBBoxHeight(String text,
                                         org.sejda.sambox.pdmodel.font.PDFont font)

isBold

public static boolean isBold(org.sejda.sambox.pdmodel.font.PDFont font)

isItalic

public static boolean isItalic(org.sejda.sambox.pdmodel.font.PDFont font)

wrapLines

public static List<String> wrapLines(String rawLabel,
                                     org.sejda.sambox.pdmodel.font.PDFont font,
                                     float fontSize,
                                     double maxWidth,
                                     org.sejda.sambox.pdmodel.PDDocument document)
                              throws TaskIOException

Wraps the given text on multiple lines, if it does not fit within the given maxWidth It will try to determine if all text can be written with given font and find a fallback for parts that are not supported.

Throws:

TaskIOException

getSimpleStringWidth

public static double getSimpleStringWidth(String text,
                                          org.sejda.sambox.pdmodel.font.PDFont font,
                                          double fontSize)
                                   throws IOException

Calculates the width of the string using the given font. Does not try to find out if the text can actually be written with the given font and find fallback

Throws:

IOException

resolveFonts

public static List<TextWithFont> resolveFonts(String label,
                                              org.sejda.sambox.pdmodel.font.PDFont font,
                                              org.sejda.sambox.pdmodel.PDDocument document)

Supports writing labels which require multiple fonts (eg: mixing thai and english words) Returns a list of text with associated font.

removeUnsupportedCharacters

public static String removeUnsupportedCharacters(String text,
                                                 org.sejda.sambox.pdmodel.PDDocument doc)

replaceUnsupportedCharacters

public static String replaceUnsupportedCharacters(String text,
                                                  org.sejda.sambox.pdmodel.PDDocument doc,
                                                  String replacement)