net.codecrete.qrbill.generator

Class FontMetrics

java.lang.Object

net.codecrete.qrbill.generator.FontMetrics

public class FontMetrics
extends java.lang.Object

Simple font metrics class to be independent of graphics subsystems and installed fonts.

Only supports Helvetica font.

Constructor Summary

Constructors

Constructor and Description
FontMetrics()

Method Summary

Modifier and Type	Method and Description
static double	getAscender(int fontSize) Distance between baseline and top of highest letter.
static double	getDescender(int fontSize) Distance between baseline and bottom of letter extending the farest below the baseline.
static double	getLeading(int fontSize) Extra space between descender of text line and ascender of next line.
static double	getLineHeight(int fontSize) Distance between the baselines of the consecutive text lines.
static java.lang.String[]	splitLines(java.lang.String text, double maxLength, int fontSize) Splits the text into lines.

Methods inherited from class java.lang.Object

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

Constructor Detail

FontMetrics

public FontMetrics()

Method Detail

getAscender

public static double getAscender(int fontSize)

Distance between baseline and top of highest letter.

Parameters:

fontSize - the font size (in pt)

Returns:

the distance (in mm)

getDescender

public static double getDescender(int fontSize)

Distance between baseline and bottom of letter extending the farest below the baseline.

Parameters:

fontSize - the font size (in pt)

Returns:

the distance (in mm)

getLeading

public static double getLeading(int fontSize)

Extra space between descender of text line and ascender of next line.

Parameters:

fontSize - the font size (in pt)

Returns:

the distance (in mm)

getLineHeight

public static double getLineHeight(int fontSize)

Distance between the baselines of the consecutive text lines.

Parameters:

fontSize - the font size (in pt)

Returns:

the distance (in mm)

splitLines

public static java.lang.String[] splitLines(java.lang.String text,
                                            double maxLength,
                                            int fontSize)

Splits the text into lines.

If a line would exceed the specified maximum length, line breaks are inserted. Newlines are treated as fixed line breaks.

Parameters:

text - the text

maxLength - the maximum line length (in pt)

fontSize - the font size (in pt)

Returns:

an array of text lines