com.goldencode.p2j.ui.client.gui.driver

Class FontHelper

java.lang.Object

com.goldencode.p2j.ui.client.gui.driver.FontHelper

public class FontHelper
extends java.lang.Object

Helper class which exposes APIs to work with AWT fonts.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.Map<java.lang.String,java.awt.Font>	FONT_CACHE A cache of AWT fonts.
private static java.awt.Canvas	FONT_CANVAS A canvas used to compute the font metrics.
private static java.util.Set<java.lang.String>	localFontFamilies A set of font families which can be found on the local system
static java.util.Map<java.awt.font.TextAttribute,java.lang.Integer>	UNDERLINE_FONT A special map containing the attributes of a underlined font.

Constructor Summary

Constructors

Constructor and Description
FontHelper()

Method Summary

Modifier and Type	Method and Description
static void	add(java.lang.String key, java.awt.Font font) Add a font to cache.
static java.awt.Font	createFont(FontDetails<?> details) Create a AWT font with the specified details.
static java.awt.Font	deriveFont(java.awt.Font font, FontDetails<?> fd, int screenRes) Derive the given font to match the screen resolution.
static java.awt.Font	get(java.lang.String key) Get a font from cache.
static FontMetricsHelper	getFontMetrics(java.lang.String key) Get the FontMetricsHelper for the cached font, with the given key.
static boolean	hasLocalFont(java.lang.String fontName, boolean boldFont) Tests if the target font is known to JRE.

Methods inherited from class java.lang.Object

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

Field Detail

UNDERLINE_FONT

public static java.util.Map<java.awt.font.TextAttribute,java.lang.Integer> UNDERLINE_FONT

A special map containing the attributes of a underlined font.

FONT_CANVAS

private static final java.awt.Canvas FONT_CANVAS

A canvas used to compute the font metrics.

FONT_CACHE

private static final java.util.Map<java.lang.String,java.awt.Font> FONT_CACHE

A cache of AWT fonts.

localFontFamilies

private static java.util.Set<java.lang.String> localFontFamilies

A set of font families which can be found on the local system

Constructor Detail

FontHelper

public FontHelper()

Method Detail

createFont

public static java.awt.Font createFont(FontDetails<?> details)

Create a AWT font with the specified details.

Parameters:

details - The font details.

Returns:

The AWT font.

hasLocalFont

public static boolean hasLocalFont(java.lang.String fontName,
                                   boolean boldFont)

Tests if the target font is known to JRE.

Parameters:

fontName - The target font name.

boldFont - Indicates that the bold font is queried.

Returns:

True if the target font is installed, otherwise false.

deriveFont

public static java.awt.Font deriveFont(java.awt.Font font,
                                       FontDetails<?> fd,
                                       int screenRes)

Derive the given font to match the screen resolution.

Parameters:

font - The AWT font to derive.

fd - The font details.

screenRes - The screen resolution.

Returns:

The derived AWT font.

getFontMetrics

public static FontMetricsHelper getFontMetrics(java.lang.String key)

Get the FontMetricsHelper for the cached font, with the given key.

These are build using the detached FONT_CANVAS.

Parameters:

key - The font key.

Returns:

The font metrics.

get

public static java.awt.Font get(java.lang.String key)

Get a font from cache.

Parameters:

key - The font key.

Returns:

The cached font.

add

public static void add(java.lang.String key,
                       java.awt.Font font)

Add a font to cache.

Parameters:

key - The font key.

font - The AWT font.