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Diffstat (limited to 'libjava/java/awt/Font.java')
| -rw-r--r-- | libjava/java/awt/Font.java | 508 |
1 files changed, 401 insertions, 107 deletions
diff --git a/libjava/java/awt/Font.java b/libjava/java/awt/Font.java index 833b3c8..266a358 100644 --- a/libjava/java/awt/Font.java +++ b/libjava/java/awt/Font.java @@ -1,120 +1,414 @@ -/* Copyright (C) 1999, 2000 Free Software Foundation +/* Font.java -- Font object + Copyright (C) 1999, 2002 Free Software Foundation, Inc. - This file is part of libjava. +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ -This software is copyrighted work licensed under the terms of the -Libjava License. Please consult the file "LIBJAVA_LICENSE" for -details. */ package java.awt; -import java.util.Locale; +import java.awt.peer.FontPeer; +import java.util.StringTokenizer; + +/** + * This class represents a windowing system font. + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @author Warren Levy <warrenl@cygnus.com> + */ +public class Font implements java.io.Serializable +{ + +/* + * Static Variables + */ + +/** + * Constant indicating a "plain" font. + */ +public static final int PLAIN = 0; + +/** + * Constant indicating a "bold" font. + */ +public static final int BOLD = 1; + +/** + * Constant indicating an "italic" font. + */ +public static final int ITALIC = 2; + +public static final int ROMAN_BASELINE = 0; +public static final int CENTER_BASELINE = 1; +public static final int HANGING_BASELINE = 2; + +// Serialization constant +private static final long serialVersionUID = -4206021311591459213L; + +/*************************************************************************/ + +/* + * Instance Variables + */ + +/** + * The name of this font + */ +protected String name; + +/** + * The font style, which is a combination (by summing, not OR-ing) of + * the font style constants in this class. + */ +protected int style; + +/** + * The font point size. + */ +protected int size; + +protected float pointSize; + +// The native peer for this font +private FontPeer peer; + +/*************************************************************************/ + +/* + * Static Methods + */ /** - * @author Warren Levy <warrenl@cygnus.com> - * @date March 16, 2000. + * Creates a <code>Font</code> object from the specified string, which + * is in one of the following formats: + * <p> + * <ul> + * <li>fontname-style-pointsize + * <li>fontname-style + * <li>fontname-pointsize + * <li>fontname + * </ul> + * <p> + * The style should be one of BOLD, ITALIC, or BOLDITALIC. The default + * style if none is specified is PLAIN. The default size if none + * is specified is 12. + */ +public static Font +decode(String fontspec) +{ + String name = null; + int style = PLAIN; + int size = 12; + + StringTokenizer st = new StringTokenizer(fontspec, "-"); + while (st.hasMoreTokens()) + { + String token = st.nextToken(); + if (name == null) + { + name = token; + continue; + } + + if (token.toUpperCase().equals("BOLD")) + { + style = BOLD; + continue; + } + if (token.toUpperCase().equals("ITALIC")) + { + style = ITALIC; + continue; + } + if (token.toUpperCase().equals("BOLDITALIC")) + { + style = BOLD + ITALIC; + continue; + } + + int tokenval = 0; + try + { + tokenval = Integer.parseInt(token); + } + catch(Exception e) { ; } + + if (tokenval != 0) + size = tokenval; + } + + return(new Font(name, style, size)); +} + +/*************************************************************************/ + +/** + * Returns a <code>Font</code> object from the passed property name. + * + * @param propname The name of the system property. + * @param default Value to use if the property is not found. + * + * @return The requested font, or <code>default</code> if the property + * not exist or is malformed. + */ +public static Font +getFont(String propname, Font defval) +{ + String propval = System.getProperty(propname); + if (propval != null) + return(decode(propval)); + + return(defval); +} + +/*************************************************************************/ + +/** + * Returns a <code>Font</code> object from the passed property name. + * + * @param propname The name of the system property. + * + * @return The requested font, or <code>null</code> if the property + * not exist or is malformed. + */ +public static Font +getFont(String propname) +{ + return(getFont(propname, null)); +} + +/*************************************************************************/ + +/* + * Constructors */ /** - * Written using on-line Java Platform 1.2 API Specification, as well - * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998). - * Status: Stubbed; A very incomplete implementation. + * Initializes a new instance of <code>Font</code> with the specified + * attributes. + * + * @param name The name of the font. + * @param style The font style. + * @param size The font point size. + */ +public +Font(String name, int style, int size) +{ + this.name = name; + this.style = style; + this.size = size; + this.pointSize = size; +} + +/*************************************************************************/ + +/* + * Instance Methods */ -public class Font -{ - // FIXME - - public static final int PLAIN = 0; - public static final int BOLD = 1; - public static final int ITALIC = 2; - public static final int ROMAN_BASELINE = 0; - public static final int CENTER_BASELINE = 1; - public static final int HANGING_BASELINE = 2; - protected String name; - protected int style; - protected int size; - protected float pointSize; - - public Font(String name, int style, int size) - { - this.name = name; - this.style = style & 0x3; // Only use lowest 2 bits. - this.size = size; - pointSize = size; // Assume some subclass can set a different val. - } - - public boolean isPlain() - { - if (style == PLAIN) - return true; - - return false; - } - - public boolean isBold() - { - if ((style & BOLD) == BOLD) - return true; - - return false; - } - - public boolean isItalic() - { - if ((style & ITALIC) == ITALIC) - return true; - - return false; - } - - public String getName() - { - return name; - } - - public String getFamily() - { - // FIXME - return null; - } - - public String getFamily(Locale l) - { - // FIXME - return null; - } - - public int getStyle() - { - return style; - } - - public int getSize() - { - return size; - } - - public float getSize2D() - { - return pointSize; - } - - public static Font decode(String str) { return null; } // FIXME - - public String toString() - { - String style_str = ""; - if (isPlain()) - style_str = "plain"; - else - { - if (isBold()) - style_str += "bold"; - if (isItalic()) - style_str += "italic"; - } - return getClass().getName() + "[family=" + getFamily() + ",name=" + - getName() + ",style=" + style_str + ",size=" + getSize() + "]"; - } +/** + * Returns the name of the font. + * + * @return The name of the font. + */ +public String +getName() +{ + return(name); +} + +/*************************************************************************/ + +/** + * Returns the style of the font. + * + * @return The font style. + */ +public int +getSize() +{ + return(size); +} + +public float +getSize2D() +{ + return pointSize; +} + +/*************************************************************************/ + +/** + * Tests whether or not this is a plain font. This will be true if + * and only if neither the bold nor the italics style is set. + * + * @return <code>true</code> if this is a plain font, <code>false</code> + * otherwise. + */ +public boolean +isPlain() +{ + if (style == PLAIN) + return(true); + else + return(false); +} + +/*************************************************************************/ + +/** + * Tests whether or not this font is bold. + * + * @return <code>true</code> if this font is bold, <code>false</code> + * otherwise. + */ +public boolean +isBold() +{ + if ((style == BOLD) || (style == (BOLD+ITALIC))) + return(true); + else + return(false); +} + +/*************************************************************************/ + +/** + * Tests whether or not this font is italic. + * + * @return <code>true</code> if this font is italic, <code>false</code> + * otherwise. + */ +public boolean +isItalic() +{ + if ((style == ITALIC) || (style == (BOLD+ITALIC))) + return(true); + else + return(false); +} + +/*************************************************************************/ + +/** + * Returns the system specific font family name. + * + * @return The system specific font family name. + */ +public String +getFamily() +{ + // FIXME: How do I implement this? + return(name); +} + +public int +getStyle() +{ + return style; +} + +/*************************************************************************/ + +/** + * Returns a native peer object for this font. + * + * @return A native peer object for this font. + */ +public FontPeer +getPeer() +{ + if (peer != null) + return(peer); + + peer = Toolkit.getDefaultToolkit().getFontPeer(name, style); + return(peer); } + +/*************************************************************************/ + +/** + * Returns a hash value for this font. + * + * @return A hash for this font. + */ +public int +hashCode() +{ + return((new String(name + size + style)).hashCode()); +} + +/*************************************************************************/ + +/** + * Tests whether or not the specified object is equal to this font. This + * will be true if and only if: + * <P> + * <ul> + * <li>The object is not <code>null</code>. + * <li>The object is an instance of <code>Font</code>. + * <li>The object has the same name, style, and size as this object. + * </ul> + * + * @return <code>true</code> if the specified object is equal to this + * object, <code>false</code> otherwise. + */ +public boolean +equals(Object obj) +{ + if (obj == null) + return(false); + + if (!(obj instanceof Font)) + return(false); + + Font f = (Font)obj; + + if (!f.name.equals(name)) + return(false); + + if (f.size != size) + return(false); + + if (f.style != style) + return(false); + + return(true); +} + +/*************************************************************************/ + +/** + * Returns a string representation of this font. + * + * @return A string representation of this font. + */ +public String +toString() +{ + return(getClass().getName() + "(name=" + name + ",style=" + style + + ",size=" + size + ")"); +} + +} // class Font + |