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DOS/V Power Report 1998 February
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Font.java
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1997-10-27
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/*
* @(#)Font.java 1.27 97/02/13
*
* Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
* CopyrightVersion 1.1_beta
*
*/
package java.awt;
import java.awt.peer.FontPeer;
/**
* A class that produces font objects.
*
* @version 1.27, 02/13/97
* @author Sami Shaio
* @author Arthur van Hoff
* @author Jim Graham
*/
public class Font implements java.io.Serializable {
/*
* Constants to be used for styles. Can be combined to mix
* styles.
*/
/**
* The plain style constant. This can be combined with the other style
* constants for mixed styles.
*/
public static final int PLAIN = 0;
/**
* The bold style constant. This can be combined with the other style
* constants for mixed styles.
*/
public static final int BOLD = 1;
/**
* The italicized style constant. This can be combined with the other
* style constants for mixed styles.
*/
public static final int ITALIC = 2;
/**
* Private data.
*/
transient private int pData;
/**
* The platform specific family name of this font.
*/
transient private String family;
/**
* The logical name of this font.
*/
protected String name;
/**
* The style of the font. This is the sum of the
* constants PLAIN, BOLD, or ITALIC.
*/
protected int style;
/**
* The point size of this font.
*/
protected int size;
/**
* The platform specific font information.
*/
transient FontPeer peer;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = -4206021311591459213L;
/**
* Gets the peer of the font.
*/
public FontPeer getPeer(){
return peer;
}
private void initializeFont()
{
family = System.getProperty("awt.font." + name.toLowerCase(), name);
this.peer = Toolkit.getDefaultToolkit().getFontPeer(name, style);
}
/**
* Creates a new font with the specified name, style and point size.
* @param name the font name
* @param style the constant style used
* @param size the point size of the font
* @see Toolkit#getFontList
*/
public Font(String name, int style, int size) {
this.name = name;
this.style = style;
this.size = size;
initializeFont();
}
/**
* Gets the platform specific family name of the font.
* Use getName to get the logical name of the font.
* @see #getName
*/
public String getFamily() {
return family;
}
/**
* Gets the logical name of the font.
* @see #getFamily
*/
public String getName() {
return name;
}
/**
* Gets the style of the font.
* @see #isPlain
* @see #isBold
* @see #isItalic
*/
public int getStyle() {
return style;
}
/**
* Gets the point size of the font.
*/
public int getSize() {
return size;
}
/**
* Returns true if the font is plain.
* @see #getStyle
*/
public boolean isPlain() {
return style == 0;
}
/**
* Returns true if the font is bold.
* @see #getStyle
*/
public boolean isBold() {
return (style & BOLD) != 0;
}
/**
* Returns true if the font is italic.
* @see #getStyle
*/
public boolean isItalic() {
return (style & ITALIC) != 0;
}
/**
* Gets a font from the system properties list.
* @param nm the property name
*/
public static Font getFont(String nm) {
return getFont(nm, null);
}
/**
* Gets the specified font using the name passed in.
* @param str the name
*/
public static Font decode(String str) {
String fontName = str;
int fontSize = 12;
int fontStyle = Font.PLAIN;
int i = str.indexOf('-');
if (i >= 0) {
fontName = str.substring(0, i);
str = str.substring(i+1);
if ((i = str.indexOf('-')) >= 0) {
if (str.startsWith("bold-")) {
fontStyle = Font.BOLD;
} else if (str.startsWith("italic-")) {
fontStyle = Font.ITALIC;
} else if (str.startsWith("bolditalic-")) {
fontStyle = Font.BOLD | Font.ITALIC;
}
str = str.substring(i + 1);
}
try {
fontSize = Integer.valueOf(str).intValue();
} catch (NumberFormatException e) {
}
}
return new Font(fontName, fontStyle, fontSize);
}
/**
* Gets the specified font from the system properties list.
* @param nm the property name
* @param font a default font to return if property 'nm' is not defined
*/
public static Font getFont(String nm, Font font) {
String str = System.getProperty(nm);
if (str == null) {
return font;
}
return Font.decode(str);
}
/**
* Returns a hashcode for this font.
*/
public int hashCode() {
return name.hashCode() ^ style ^ size;
}
/**
* Compares this object to the specifed object.
* @param obj the object to compare with
* @return true if the objects are the same; false otherwise.
*/
public boolean equals(Object obj) {
if (obj instanceof Font) {
Font font = (Font)obj;
return (size == font.size) && (style == font.style) && name.equals(font.name);
}
return false;
}
/**
* Converts this object to a String representation.
*/
public String toString() {
String strStyle;
if (isBold()) {
strStyle = isItalic() ? "bolditalic" : "bold";
} else {
strStyle = isItalic() ? "italic" : "plain";
}
return getClass().getName() + "[family=" + family + ",name=" + name + ",style=" +
strStyle + ",size=" + size + "]";
}
/* Serialization support. A readObject method is neccessary because
* the constructor creates the fonts peer, and we can't serialize the
* peer. Similarly the computed font "family" may be different
* at readObject time than at writeObject time. An integer version is
* written so that future versions of this class will be able to recognize
* serialized output from this one.
*/
private int fontSerializedDataVersion = 1;
private void writeObject(java.io.ObjectOutputStream s)
throws java.lang.ClassNotFoundException,
java.io.IOException
{
s.defaultWriteObject();
}
private void readObject(java.io.ObjectInputStream s)
throws java.lang.ClassNotFoundException,
java.io.IOException
{
s.defaultReadObject();
initializeFont();
}
}