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2687 lines
106 KiB
2687 lines
106 KiB
/*
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* Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.awt;
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import java.awt.font.FontRenderContext;
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import java.awt.font.GlyphVector;
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import java.awt.font.LineMetrics;
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import java.awt.font.TextAttribute;
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import java.awt.font.TextLayout;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Point2D;
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import java.awt.geom.Rectangle2D;
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import java.awt.peer.FontPeer;
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import java.io.*;
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import java.lang.ref.SoftReference;
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import java.nio.file.Files;
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import java.security.AccessController;
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import java.security.PrivilegedExceptionAction;
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import java.text.AttributedCharacterIterator.Attribute;
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import java.text.CharacterIterator;
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import java.text.StringCharacterIterator;
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import java.util.Hashtable;
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import java.util.Locale;
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import java.util.Map;
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import sun.font.StandardGlyphVector;
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import sun.font.AttributeMap;
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import sun.font.AttributeValues;
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import sun.font.CompositeFont;
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import sun.font.CreatedFontTracker;
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import sun.font.Font2D;
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import sun.font.Font2DHandle;
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import sun.font.FontAccess;
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import sun.font.FontManager;
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import sun.font.FontManagerFactory;
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import sun.font.FontUtilities;
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import sun.font.GlyphLayout;
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import sun.font.FontLineMetrics;
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import sun.font.CoreMetrics;
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import static sun.font.EAttribute.*;
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/**
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* The <code>Font</code> class represents fonts, which are used to
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* render text in a visible way.
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* A font provides the information needed to map sequences of
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* <em>characters</em> to sequences of <em>glyphs</em>
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* and to render sequences of glyphs on <code>Graphics</code> and
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* <code>Component</code> objects.
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*
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* <h3>Characters and Glyphs</h3>
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*
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* A <em>character</em> is a symbol that represents an item such as a letter,
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* a digit, or punctuation in an abstract way. For example, <code>'g'</code>,
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* LATIN SMALL LETTER G, is a character.
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* <p>
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* A <em>glyph</em> is a shape used to render a character or a sequence of
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* characters. In simple writing systems, such as Latin, typically one glyph
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* represents one character. In general, however, characters and glyphs do not
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* have one-to-one correspondence. For example, the character 'á'
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* LATIN SMALL LETTER A WITH ACUTE, can be represented by
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* two glyphs: one for 'a' and one for '´'. On the other hand, the
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* two-character string "fi" can be represented by a single glyph, an
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* "fi" ligature. In complex writing systems, such as Arabic or the South
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* and South-East Asian writing systems, the relationship between characters
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* and glyphs can be more complicated and involve context-dependent selection
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* of glyphs as well as glyph reordering.
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*
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* A font encapsulates the collection of glyphs needed to render a selected set
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* of characters as well as the tables needed to map sequences of characters to
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* corresponding sequences of glyphs.
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*
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* <h3>Physical and Logical Fonts</h3>
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*
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* The Java Platform distinguishes between two kinds of fonts:
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* <em>physical</em> fonts and <em>logical</em> fonts.
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* <p>
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* <em>Physical</em> fonts are the actual font libraries containing glyph data
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* and tables to map from character sequences to glyph sequences, using a font
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* technology such as TrueType or PostScript Type 1.
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* All implementations of the Java Platform must support TrueType fonts;
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* support for other font technologies is implementation dependent.
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* Physical fonts may use names such as Helvetica, Palatino, HonMincho, or
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* any number of other font names.
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* Typically, each physical font supports only a limited set of writing
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* systems, for example, only Latin characters or only Japanese and Basic
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* Latin.
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* The set of available physical fonts varies between configurations.
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* Applications that require specific fonts can bundle them and instantiate
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* them using the {@link #createFont createFont} method.
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* <p>
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* <em>Logical</em> fonts are the five font families defined by the Java
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* platform which must be supported by any Java runtime environment:
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* Serif, SansSerif, Monospaced, Dialog, and DialogInput.
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* These logical fonts are not actual font libraries. Instead, the logical
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* font names are mapped to physical fonts by the Java runtime environment.
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* The mapping is implementation and usually locale dependent, so the look
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* and the metrics provided by them vary.
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* Typically, each logical font name maps to several physical fonts in order to
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* cover a large range of characters.
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* <p>
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* Peered AWT components, such as {@link Label Label} and
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* {@link TextField TextField}, can only use logical fonts.
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* <p>
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* For a discussion of the relative advantages and disadvantages of using
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* physical or logical fonts, see the
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* <a href="http://www.oracle.com/technetwork/java/javase/tech/faq-jsp-138165.html">Internationalization FAQ</a>
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* document.
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*
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* <h3>Font Faces and Names</h3>
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*
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* A <code>Font</code>
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* can have many faces, such as heavy, medium, oblique, gothic and
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* regular. All of these faces have similar typographic design.
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* <p>
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* There are three different names that you can get from a
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* <code>Font</code> object. The <em>logical font name</em> is simply the
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* name that was used to construct the font.
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* The <em>font face name</em>, or just <em>font name</em> for
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* short, is the name of a particular font face, like Helvetica Bold. The
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* <em>family name</em> is the name of the font family that determines the
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* typographic design across several faces, like Helvetica.
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* <p>
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* The <code>Font</code> class represents an instance of a font face from
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* a collection of font faces that are present in the system resources
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* of the host system. As examples, Arial Bold and Courier Bold Italic
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* are font faces. There can be several <code>Font</code> objects
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* associated with a font face, each differing in size, style, transform
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* and font features.
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* <p>
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* The {@link GraphicsEnvironment#getAllFonts() getAllFonts} method
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* of the <code>GraphicsEnvironment</code> class returns an
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* array of all font faces available in the system. These font faces are
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* returned as <code>Font</code> objects with a size of 1, identity
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* transform and default font features. These
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* base fonts can then be used to derive new <code>Font</code> objects
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* with varying sizes, styles, transforms and font features via the
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* <code>deriveFont</code> methods in this class.
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*
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* <h3>Font and TextAttribute</h3>
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*
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* <p><code>Font</code> supports most
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* <code>TextAttribute</code>s. This makes some operations, such as
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* rendering underlined text, convenient since it is not
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* necessary to explicitly construct a <code>TextLayout</code> object.
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* Attributes can be set on a Font by constructing or deriving it
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* using a <code>Map</code> of <code>TextAttribute</code> values.
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*
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* <p>The values of some <code>TextAttributes</code> are not
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* serializable, and therefore attempting to serialize an instance of
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* <code>Font</code> that has such values will not serialize them.
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* This means a Font deserialized from such a stream will not compare
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* equal to the original Font that contained the non-serializable
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* attributes. This should very rarely pose a problem
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* since these attributes are typically used only in special
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* circumstances and are unlikely to be serialized.
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*
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* <ul>
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* <li><code>FOREGROUND</code> and <code>BACKGROUND</code> use
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* <code>Paint</code> values. The subclass <code>Color</code> is
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* serializable, while <code>GradientPaint</code> and
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* <code>TexturePaint</code> are not.</li>
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* <li><code>CHAR_REPLACEMENT</code> uses
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* <code>GraphicAttribute</code> values. The subclasses
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* <code>ShapeGraphicAttribute</code> and
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* <code>ImageGraphicAttribute</code> are not serializable.</li>
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* <li><code>INPUT_METHOD_HIGHLIGHT</code> uses
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* <code>InputMethodHighlight</code> values, which are
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* not serializable. See {@link java.awt.im.InputMethodHighlight}.</li>
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* </ul>
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*
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* <p>Clients who create custom subclasses of <code>Paint</code> and
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* <code>GraphicAttribute</code> can make them serializable and
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* avoid this problem. Clients who use input method highlights can
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* convert these to the platform-specific attributes for that
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* highlight on the current platform and set them on the Font as
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* a workaround.
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*
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* <p>The <code>Map</code>-based constructor and
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* <code>deriveFont</code> APIs ignore the FONT attribute, and it is
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* not retained by the Font; the static {@link #getFont} method should
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* be used if the FONT attribute might be present. See {@link
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* java.awt.font.TextAttribute#FONT} for more information.</p>
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*
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* <p>Several attributes will cause additional rendering overhead
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* and potentially invoke layout. If a <code>Font</code> has such
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* attributes, the <code>{@link #hasLayoutAttributes()}</code> method
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* will return true.</p>
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*
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* <p>Note: Font rotations can cause text baselines to be rotated. In
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* order to account for this (rare) possibility, font APIs are
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* specified to return metrics and take parameters 'in
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* baseline-relative coordinates'. This maps the 'x' coordinate to
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* the advance along the baseline, (positive x is forward along the
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* baseline), and the 'y' coordinate to a distance along the
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* perpendicular to the baseline at 'x' (positive y is 90 degrees
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* clockwise from the baseline vector). APIs for which this is
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* especially important are called out as having 'baseline-relative
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* coordinates.'
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*/
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public class Font implements java.io.Serializable
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{
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private static class FontAccessImpl extends FontAccess {
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public Font2D getFont2D(Font font) {
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return font.getFont2D();
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}
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public void setFont2D(Font font, Font2DHandle handle) {
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font.font2DHandle = handle;
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}
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public void setCreatedFont(Font font) {
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font.createdFont = true;
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}
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public boolean isCreatedFont(Font font) {
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return font.createdFont;
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}
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}
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static {
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/* ensure that the necessary native libraries are loaded */
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Toolkit.loadLibraries();
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initIDs();
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FontAccess.setFontAccess(new FontAccessImpl());
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}
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/**
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* This is now only used during serialization. Typically
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* it is null.
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*
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* @serial
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* @see #getAttributes()
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*/
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private Hashtable<Object, Object> fRequestedAttributes;
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/*
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* Constants to be used for logical font family names.
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*/
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/**
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* A String constant for the canonical family name of the
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* logical font "Dialog". It is useful in Font construction
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* to provide compile-time verification of the name.
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* @since 1.6
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*/
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public static final String DIALOG = "Dialog";
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/**
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* A String constant for the canonical family name of the
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* logical font "DialogInput". It is useful in Font construction
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* to provide compile-time verification of the name.
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* @since 1.6
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*/
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public static final String DIALOG_INPUT = "DialogInput";
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/**
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* A String constant for the canonical family name of the
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* logical font "SansSerif". It is useful in Font construction
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* to provide compile-time verification of the name.
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* @since 1.6
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*/
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public static final String SANS_SERIF = "SansSerif";
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/**
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* A String constant for the canonical family name of the
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* logical font "Serif". It is useful in Font construction
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* to provide compile-time verification of the name.
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* @since 1.6
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*/
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public static final String SERIF = "Serif";
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/**
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* A String constant for the canonical family name of the
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* logical font "Monospaced". It is useful in Font construction
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* to provide compile-time verification of the name.
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* @since 1.6
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*/
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public static final String MONOSPACED = "Monospaced";
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/*
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* Constants to be used for styles. Can be combined to mix
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* styles.
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*/
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/**
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* The plain style constant.
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*/
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public static final int PLAIN = 0;
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/**
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* The bold style constant. This can be combined with the other style
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* constants (except PLAIN) for mixed styles.
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*/
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public static final int BOLD = 1;
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/**
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* The italicized style constant. This can be combined with the other
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* style constants (except PLAIN) for mixed styles.
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*/
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public static final int ITALIC = 2;
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/**
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* The baseline used in most Roman scripts when laying out text.
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*/
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public static final int ROMAN_BASELINE = 0;
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/**
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* The baseline used in ideographic scripts like Chinese, Japanese,
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* and Korean when laying out text.
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*/
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public static final int CENTER_BASELINE = 1;
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/**
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* The baseline used in Devanigiri and similar scripts when laying
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* out text.
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*/
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public static final int HANGING_BASELINE = 2;
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/**
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* Identify a font resource of type TRUETYPE.
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* Used to specify a TrueType font resource to the
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* {@link #createFont} method.
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* The TrueType format was extended to become the OpenType
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* format, which adds support for fonts with Postscript outlines,
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* this tag therefore references these fonts, as well as those
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* with TrueType outlines.
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* @since 1.3
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*/
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public static final int TRUETYPE_FONT = 0;
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/**
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* Identify a font resource of type TYPE1.
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* Used to specify a Type1 font resource to the
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* {@link #createFont} method.
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* @since 1.5
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*/
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public static final int TYPE1_FONT = 1;
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/**
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* The logical name of this <code>Font</code>, as passed to the
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* constructor.
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* @since JDK1.0
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*
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* @serial
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* @see #getName
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*/
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protected String name;
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/**
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* The style of this <code>Font</code>, as passed to the constructor.
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* This style can be PLAIN, BOLD, ITALIC, or BOLD+ITALIC.
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* @since JDK1.0
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*
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* @serial
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* @see #getStyle()
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*/
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protected int style;
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/**
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* The point size of this <code>Font</code>, rounded to integer.
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* @since JDK1.0
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*
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* @serial
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* @see #getSize()
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*/
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protected int size;
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/**
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* The point size of this <code>Font</code> in <code>float</code>.
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*
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* @serial
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* @see #getSize()
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* @see #getSize2D()
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*/
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protected float pointSize;
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/**
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* The platform specific font information.
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*/
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private transient FontPeer peer;
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private transient long pData; // native JDK1.1 font pointer
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private transient Font2DHandle font2DHandle;
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private transient AttributeValues values;
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private transient boolean hasLayoutAttributes;
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/*
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* If the origin of a Font is a created font then this attribute
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* must be set on all derived fonts too.
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*/
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private transient boolean createdFont = false;
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/*
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* This is true if the font transform is not identity. It
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* is used to avoid unnecessary instantiation of an AffineTransform.
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*/
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private transient boolean nonIdentityTx;
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/*
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* A cached value used when a transform is required for internal
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* use. This must not be exposed to callers since AffineTransform
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* is mutable.
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*/
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private static final AffineTransform identityTx = new AffineTransform();
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/*
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* JDK 1.1 serialVersionUID
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*/
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private static final long serialVersionUID = -4206021311591459213L;
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/**
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* Gets the peer of this <code>Font</code>.
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* @return the peer of the <code>Font</code>.
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* @since JDK1.1
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* @deprecated Font rendering is now platform independent.
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*/
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@Deprecated
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public FontPeer getPeer(){
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return getPeer_NoClientCode();
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}
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// NOTE: This method is called by privileged threads.
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// We implement this functionality in a package-private method
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// to insure that it cannot be overridden by client subclasses.
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// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
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@SuppressWarnings("deprecation")
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final FontPeer getPeer_NoClientCode() {
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if(peer == null) {
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Toolkit tk = Toolkit.getDefaultToolkit();
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this.peer = tk.getFontPeer(name, style);
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}
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return peer;
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}
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/**
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* Return the AttributeValues object associated with this
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* font. Most of the time, the internal object is null.
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* If required, it will be created from the 'standard'
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* state on the font. Only non-default values will be
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* set in the AttributeValues object.
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*
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* <p>Since the AttributeValues object is mutable, and it
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* is cached in the font, care must be taken to ensure that
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* it is not mutated.
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*/
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private AttributeValues getAttributeValues() {
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if (values == null) {
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AttributeValues valuesTmp = new AttributeValues();
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valuesTmp.setFamily(name);
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valuesTmp.setSize(pointSize); // expects the float value.
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if ((style & BOLD) != 0) {
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valuesTmp.setWeight(2); // WEIGHT_BOLD
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}
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if ((style & ITALIC) != 0) {
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valuesTmp.setPosture(.2f); // POSTURE_OBLIQUE
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}
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valuesTmp.defineAll(PRIMARY_MASK); // for streaming compatibility
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values = valuesTmp;
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}
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return values;
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}
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private Font2D getFont2D() {
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FontManager fm = FontManagerFactory.getInstance();
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if (fm.usingPerAppContextComposites() &&
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font2DHandle != null &&
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font2DHandle.font2D instanceof CompositeFont &&
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((CompositeFont)(font2DHandle.font2D)).isStdComposite()) {
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return fm.findFont2D(name, style,
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FontManager.LOGICAL_FALLBACK);
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} else if (font2DHandle == null) {
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font2DHandle =
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fm.findFont2D(name, style,
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FontManager.LOGICAL_FALLBACK).handle;
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}
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/* Do not cache the de-referenced font2D. It must be explicitly
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* de-referenced to pick up a valid font in the event that the
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* original one is marked invalid
|
|
*/
|
|
return font2DHandle.font2D;
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> from the specified name, style and
|
|
* point size.
|
|
* <p>
|
|
* The font name can be a font face name or a font family name.
|
|
* It is used together with the style to find an appropriate font face.
|
|
* When a font family name is specified, the style argument is used to
|
|
* select the most appropriate face from the family. When a font face
|
|
* name is specified, the face's style and the style argument are
|
|
* merged to locate the best matching font from the same family.
|
|
* For example if face name "Arial Bold" is specified with style
|
|
* <code>Font.ITALIC</code>, the font system looks for a face in the
|
|
* "Arial" family that is bold and italic, and may associate the font
|
|
* instance with the physical font face "Arial Bold Italic".
|
|
* The style argument is merged with the specified face's style, not
|
|
* added or subtracted.
|
|
* This means, specifying a bold face and a bold style does not
|
|
* double-embolden the font, and specifying a bold face and a plain
|
|
* style does not lighten the font.
|
|
* <p>
|
|
* If no face for the requested style can be found, the font system
|
|
* may apply algorithmic styling to achieve the desired style.
|
|
* For example, if <code>ITALIC</code> is requested, but no italic
|
|
* face is available, glyphs from the plain face may be algorithmically
|
|
* obliqued (slanted).
|
|
* <p>
|
|
* Font name lookup is case insensitive, using the case folding
|
|
* rules of the US locale.
|
|
* <p>
|
|
* If the <code>name</code> parameter represents something other than a
|
|
* logical font, i.e. is interpreted as a physical font face or family, and
|
|
* this cannot be mapped by the implementation to a physical font or a
|
|
* compatible alternative, then the font system will map the Font
|
|
* instance to "Dialog", such that for example, the family as reported
|
|
* by {@link #getFamily() getFamily} will be "Dialog".
|
|
* <p>
|
|
*
|
|
* @param name the font name. This can be a font face name or a font
|
|
* family name, and may represent either a logical font or a physical
|
|
* font found in this {@code GraphicsEnvironment}.
|
|
* The family names for logical fonts are: Dialog, DialogInput,
|
|
* Monospaced, Serif, or SansSerif. Pre-defined String constants exist
|
|
* for all of these names, for example, {@code DIALOG}. If {@code name} is
|
|
* {@code null}, the <em>logical font name</em> of the new
|
|
* {@code Font} as returned by {@code getName()} is set to
|
|
* the name "Default".
|
|
* @param style the style constant for the {@code Font}
|
|
* The style argument is an integer bitmask that may
|
|
* be {@code PLAIN}, or a bitwise union of {@code BOLD} and/or
|
|
* {@code ITALIC} (for example, {@code ITALIC} or {@code BOLD|ITALIC}).
|
|
* If the style argument does not conform to one of the expected
|
|
* integer bitmasks then the style is set to {@code PLAIN}.
|
|
* @param size the point size of the {@code Font}
|
|
* @see GraphicsEnvironment#getAllFonts
|
|
* @see GraphicsEnvironment#getAvailableFontFamilyNames
|
|
* @since JDK1.0
|
|
*/
|
|
public Font(String name, int style, int size) {
|
|
this.name = (name != null) ? name : "Default";
|
|
this.style = (style & ~0x03) == 0 ? style : 0;
|
|
this.size = size;
|
|
this.pointSize = size;
|
|
}
|
|
|
|
private Font(String name, int style, float sizePts) {
|
|
this.name = (name != null) ? name : "Default";
|
|
this.style = (style & ~0x03) == 0 ? style : 0;
|
|
this.size = (int)(sizePts + 0.5);
|
|
this.pointSize = sizePts;
|
|
}
|
|
|
|
/* This constructor is used by deriveFont when attributes is null */
|
|
private Font(String name, int style, float sizePts,
|
|
boolean created, Font2DHandle handle) {
|
|
this(name, style, sizePts);
|
|
this.createdFont = created;
|
|
/* Fonts created from a stream will use the same font2D instance
|
|
* as the parent.
|
|
* One exception is that if the derived font is requested to be
|
|
* in a different style, then also check if its a CompositeFont
|
|
* and if so build a new CompositeFont from components of that style.
|
|
* CompositeFonts can only be marked as "created" if they are used
|
|
* to add fall backs to a physical font. And non-composites are
|
|
* always from "Font.createFont()" and shouldn't get this treatment.
|
|
*/
|
|
if (created) {
|
|
if (handle.font2D instanceof CompositeFont &&
|
|
handle.font2D.getStyle() != style) {
|
|
FontManager fm = FontManagerFactory.getInstance();
|
|
this.font2DHandle = fm.getNewComposite(null, style, handle);
|
|
} else {
|
|
this.font2DHandle = handle;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* used to implement Font.createFont */
|
|
private Font(File fontFile, int fontFormat,
|
|
boolean isCopy, CreatedFontTracker tracker)
|
|
throws FontFormatException {
|
|
this.createdFont = true;
|
|
/* Font2D instances created by this method track their font file
|
|
* so that when the Font2D is GC'd it can also remove the file.
|
|
*/
|
|
FontManager fm = FontManagerFactory.getInstance();
|
|
this.font2DHandle = fm.createFont2D(fontFile, fontFormat, isCopy,
|
|
tracker).handle;
|
|
this.name = this.font2DHandle.font2D.getFontName(Locale.getDefault());
|
|
this.style = Font.PLAIN;
|
|
this.size = 1;
|
|
this.pointSize = 1f;
|
|
}
|
|
|
|
/* This constructor is used when one font is derived from another.
|
|
* Fonts created from a stream will use the same font2D instance as the
|
|
* parent. They can be distinguished because the "created" argument
|
|
* will be "true". Since there is no way to recreate these fonts they
|
|
* need to have the handle to the underlying font2D passed in.
|
|
* "created" is also true when a special composite is referenced by the
|
|
* handle for essentially the same reasons.
|
|
* But when deriving a font in these cases two particular attributes
|
|
* need special attention: family/face and style.
|
|
* The "composites" in these cases need to be recreated with optimal
|
|
* fonts for the new values of family and style.
|
|
* For fonts created with createFont() these are treated differently.
|
|
* JDK can often synthesise a different style (bold from plain
|
|
* for example). For fonts created with "createFont" this is a reasonable
|
|
* solution but its also possible (although rare) to derive a font with a
|
|
* different family attribute. In this case JDK needs
|
|
* to break the tie with the original Font2D and find a new Font.
|
|
* The oldName and oldStyle are supplied so they can be compared with
|
|
* what the Font2D and the values. To speed things along :
|
|
* oldName == null will be interpreted as the name is unchanged.
|
|
* oldStyle = -1 will be interpreted as the style is unchanged.
|
|
* In these cases there is no need to interrogate "values".
|
|
*/
|
|
private Font(AttributeValues values, String oldName, int oldStyle,
|
|
boolean created, Font2DHandle handle) {
|
|
|
|
this.createdFont = created;
|
|
if (created) {
|
|
this.font2DHandle = handle;
|
|
|
|
String newName = null;
|
|
if (oldName != null) {
|
|
newName = values.getFamily();
|
|
if (oldName.equals(newName)) newName = null;
|
|
}
|
|
int newStyle = 0;
|
|
if (oldStyle == -1) {
|
|
newStyle = -1;
|
|
} else {
|
|
if (values.getWeight() >= 2f) newStyle = BOLD;
|
|
if (values.getPosture() >= .2f) newStyle |= ITALIC;
|
|
if (oldStyle == newStyle) newStyle = -1;
|
|
}
|
|
if (handle.font2D instanceof CompositeFont) {
|
|
if (newStyle != -1 || newName != null) {
|
|
FontManager fm = FontManagerFactory.getInstance();
|
|
this.font2DHandle =
|
|
fm.getNewComposite(newName, newStyle, handle);
|
|
}
|
|
} else if (newName != null) {
|
|
this.createdFont = false;
|
|
this.font2DHandle = null;
|
|
}
|
|
}
|
|
initFromValues(values);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> with the specified attributes.
|
|
* Only keys defined in {@link java.awt.font.TextAttribute TextAttribute}
|
|
* are recognized. In addition the FONT attribute is
|
|
* not recognized by this constructor
|
|
* (see {@link #getAvailableAttributes}). Only attributes that have
|
|
* values of valid types will affect the new <code>Font</code>.
|
|
* <p>
|
|
* If <code>attributes</code> is <code>null</code>, a new
|
|
* <code>Font</code> is initialized with default values.
|
|
* @see java.awt.font.TextAttribute
|
|
* @param attributes the attributes to assign to the new
|
|
* <code>Font</code>, or <code>null</code>
|
|
*/
|
|
public Font(Map<? extends Attribute, ?> attributes) {
|
|
initFromValues(AttributeValues.fromMap(attributes, RECOGNIZED_MASK));
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> from the specified <code>font</code>.
|
|
* This constructor is intended for use by subclasses.
|
|
* @param font from which to create this <code>Font</code>.
|
|
* @throws NullPointerException if <code>font</code> is null
|
|
* @since 1.6
|
|
*/
|
|
protected Font(Font font) {
|
|
if (font.values != null) {
|
|
initFromValues(font.getAttributeValues().clone());
|
|
} else {
|
|
this.name = font.name;
|
|
this.style = font.style;
|
|
this.size = font.size;
|
|
this.pointSize = font.pointSize;
|
|
}
|
|
this.font2DHandle = font.font2DHandle;
|
|
this.createdFont = font.createdFont;
|
|
}
|
|
|
|
/**
|
|
* Font recognizes all attributes except FONT.
|
|
*/
|
|
private static final int RECOGNIZED_MASK = AttributeValues.MASK_ALL
|
|
& ~AttributeValues.getMask(EFONT);
|
|
|
|
/**
|
|
* These attributes are considered primary by the FONT attribute.
|
|
*/
|
|
private static final int PRIMARY_MASK =
|
|
AttributeValues.getMask(EFAMILY, EWEIGHT, EWIDTH, EPOSTURE, ESIZE,
|
|
ETRANSFORM, ESUPERSCRIPT, ETRACKING);
|
|
|
|
/**
|
|
* These attributes are considered secondary by the FONT attribute.
|
|
*/
|
|
private static final int SECONDARY_MASK =
|
|
RECOGNIZED_MASK & ~PRIMARY_MASK;
|
|
|
|
/**
|
|
* These attributes are handled by layout.
|
|
*/
|
|
private static final int LAYOUT_MASK =
|
|
AttributeValues.getMask(ECHAR_REPLACEMENT, EFOREGROUND, EBACKGROUND,
|
|
EUNDERLINE, ESTRIKETHROUGH, ERUN_DIRECTION,
|
|
EBIDI_EMBEDDING, EJUSTIFICATION,
|
|
EINPUT_METHOD_HIGHLIGHT, EINPUT_METHOD_UNDERLINE,
|
|
ESWAP_COLORS, ENUMERIC_SHAPING, EKERNING,
|
|
ELIGATURES, ETRACKING, ESUPERSCRIPT);
|
|
|
|
private static final int EXTRA_MASK =
|
|
AttributeValues.getMask(ETRANSFORM, ESUPERSCRIPT, EWIDTH);
|
|
|
|
/**
|
|
* Initialize the standard Font fields from the values object.
|
|
*/
|
|
private void initFromValues(AttributeValues values) {
|
|
this.values = values;
|
|
values.defineAll(PRIMARY_MASK); // for 1.5 streaming compatibility
|
|
|
|
this.name = values.getFamily();
|
|
this.pointSize = values.getSize();
|
|
this.size = (int)(values.getSize() + 0.5);
|
|
if (values.getWeight() >= 2f) this.style |= BOLD; // not == 2f
|
|
if (values.getPosture() >= .2f) this.style |= ITALIC; // not == .2f
|
|
|
|
this.nonIdentityTx = values.anyNonDefault(EXTRA_MASK);
|
|
this.hasLayoutAttributes = values.anyNonDefault(LAYOUT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Returns a <code>Font</code> appropriate to the attributes.
|
|
* If <code>attributes</code>contains a <code>FONT</code> attribute
|
|
* with a valid <code>Font</code> as its value, it will be
|
|
* merged with any remaining attributes. See
|
|
* {@link java.awt.font.TextAttribute#FONT} for more
|
|
* information.
|
|
*
|
|
* @param attributes the attributes to assign to the new
|
|
* <code>Font</code>
|
|
* @return a new <code>Font</code> created with the specified
|
|
* attributes
|
|
* @throws NullPointerException if <code>attributes</code> is null.
|
|
* @since 1.2
|
|
* @see java.awt.font.TextAttribute
|
|
*/
|
|
public static Font getFont(Map<? extends Attribute, ?> attributes) {
|
|
// optimize for two cases:
|
|
// 1) FONT attribute, and nothing else
|
|
// 2) attributes, but no FONT
|
|
|
|
// avoid turning the attributemap into a regular map for no reason
|
|
if (attributes instanceof AttributeMap &&
|
|
((AttributeMap)attributes).getValues() != null) {
|
|
AttributeValues values = ((AttributeMap)attributes).getValues();
|
|
if (values.isNonDefault(EFONT)) {
|
|
Font font = values.getFont();
|
|
if (!values.anyDefined(SECONDARY_MASK)) {
|
|
return font;
|
|
}
|
|
// merge
|
|
values = font.getAttributeValues().clone();
|
|
values.merge(attributes, SECONDARY_MASK);
|
|
return new Font(values, font.name, font.style,
|
|
font.createdFont, font.font2DHandle);
|
|
}
|
|
return new Font(attributes);
|
|
}
|
|
|
|
Font font = (Font)attributes.get(TextAttribute.FONT);
|
|
if (font != null) {
|
|
if (attributes.size() > 1) { // oh well, check for anything else
|
|
AttributeValues values = font.getAttributeValues().clone();
|
|
values.merge(attributes, SECONDARY_MASK);
|
|
return new Font(values, font.name, font.style,
|
|
font.createdFont, font.font2DHandle);
|
|
}
|
|
|
|
return font;
|
|
}
|
|
|
|
return new Font(attributes);
|
|
}
|
|
|
|
/**
|
|
* Used with the byte count tracker for fonts created from streams.
|
|
* If a thread can create temp files anyway, no point in counting
|
|
* font bytes.
|
|
*/
|
|
private static boolean hasTempPermission() {
|
|
|
|
if (System.getSecurityManager() == null) {
|
|
return true;
|
|
}
|
|
File f = null;
|
|
boolean hasPerm = false;
|
|
try {
|
|
f = Files.createTempFile("+~JT", ".tmp").toFile();
|
|
f.delete();
|
|
f = null;
|
|
hasPerm = true;
|
|
} catch (Throwable t) {
|
|
/* inc. any kind of SecurityException */
|
|
}
|
|
return hasPerm;
|
|
}
|
|
|
|
/**
|
|
* Returns a new <code>Font</code> using the specified font type
|
|
* and input data. The new <code>Font</code> is
|
|
* created with a point size of 1 and style {@link #PLAIN PLAIN}.
|
|
* This base font can then be used with the <code>deriveFont</code>
|
|
* methods in this class to derive new <code>Font</code> objects with
|
|
* varying sizes, styles, transforms and font features. This
|
|
* method does not close the {@link InputStream}.
|
|
* <p>
|
|
* To make the <code>Font</code> available to Font constructors the
|
|
* returned <code>Font</code> must be registered in the
|
|
* <code>GraphicsEnviroment</code> by calling
|
|
* {@link GraphicsEnvironment#registerFont(Font) registerFont(Font)}.
|
|
* @param fontFormat the type of the <code>Font</code>, which is
|
|
* {@link #TRUETYPE_FONT TRUETYPE_FONT} if a TrueType resource is specified.
|
|
* or {@link #TYPE1_FONT TYPE1_FONT} if a Type 1 resource is specified.
|
|
* @param fontStream an <code>InputStream</code> object representing the
|
|
* input data for the font.
|
|
* @return a new <code>Font</code> created with the specified font type.
|
|
* @throws IllegalArgumentException if <code>fontFormat</code> is not
|
|
* <code>TRUETYPE_FONT</code>or<code>TYPE1_FONT</code>.
|
|
* @throws FontFormatException if the <code>fontStream</code> data does
|
|
* not contain the required font tables for the specified format.
|
|
* @throws IOException if the <code>fontStream</code>
|
|
* cannot be completely read.
|
|
* @see GraphicsEnvironment#registerFont(Font)
|
|
* @since 1.3
|
|
*/
|
|
public static Font createFont(int fontFormat, InputStream fontStream)
|
|
throws java.awt.FontFormatException, java.io.IOException {
|
|
|
|
if (hasTempPermission()) {
|
|
return createFont0(fontFormat, fontStream, null);
|
|
}
|
|
|
|
// Otherwise, be extra conscious of pending temp file creation and
|
|
// resourcefully handle the temp file resources, among other things.
|
|
CreatedFontTracker tracker = CreatedFontTracker.getTracker();
|
|
boolean acquired = false;
|
|
try {
|
|
acquired = tracker.acquirePermit();
|
|
if (!acquired) {
|
|
throw new IOException("Timed out waiting for resources.");
|
|
}
|
|
return createFont0(fontFormat, fontStream, tracker);
|
|
} catch (InterruptedException e) {
|
|
throw new IOException("Problem reading font data.");
|
|
} finally {
|
|
if (acquired) {
|
|
tracker.releasePermit();
|
|
}
|
|
}
|
|
}
|
|
|
|
private static Font createFont0(int fontFormat, InputStream fontStream,
|
|
CreatedFontTracker tracker)
|
|
throws java.awt.FontFormatException, java.io.IOException {
|
|
|
|
if (fontFormat != Font.TRUETYPE_FONT &&
|
|
fontFormat != Font.TYPE1_FONT) {
|
|
throw new IllegalArgumentException ("font format not recognized");
|
|
}
|
|
boolean copiedFontData = false;
|
|
try {
|
|
final File tFile = AccessController.doPrivileged(
|
|
new PrivilegedExceptionAction<File>() {
|
|
public File run() throws IOException {
|
|
return Files.createTempFile("+~JF", ".tmp").toFile();
|
|
}
|
|
}
|
|
);
|
|
if (tracker != null) {
|
|
tracker.add(tFile);
|
|
}
|
|
|
|
int totalSize = 0;
|
|
try {
|
|
final OutputStream outStream =
|
|
AccessController.doPrivileged(
|
|
new PrivilegedExceptionAction<OutputStream>() {
|
|
public OutputStream run() throws IOException {
|
|
return new FileOutputStream(tFile);
|
|
}
|
|
}
|
|
);
|
|
if (tracker != null) {
|
|
tracker.set(tFile, outStream);
|
|
}
|
|
try {
|
|
byte[] buf = new byte[8192];
|
|
for (;;) {
|
|
int bytesRead = fontStream.read(buf);
|
|
if (bytesRead < 0) {
|
|
break;
|
|
}
|
|
if (tracker != null) {
|
|
if (totalSize+bytesRead > CreatedFontTracker.MAX_FILE_SIZE) {
|
|
throw new IOException("File too big.");
|
|
}
|
|
if (totalSize+tracker.getNumBytes() >
|
|
CreatedFontTracker.MAX_TOTAL_BYTES)
|
|
{
|
|
throw new IOException("Total files too big.");
|
|
}
|
|
totalSize += bytesRead;
|
|
tracker.addBytes(bytesRead);
|
|
}
|
|
outStream.write(buf, 0, bytesRead);
|
|
}
|
|
/* don't close the input stream */
|
|
} finally {
|
|
outStream.close();
|
|
}
|
|
/* After all references to a Font2D are dropped, the file
|
|
* will be removed. To support long-lived AppContexts,
|
|
* we need to then decrement the byte count by the size
|
|
* of the file.
|
|
* If the data isn't a valid font, the implementation will
|
|
* delete the tmp file and decrement the byte count
|
|
* in the tracker object before returning from the
|
|
* constructor, so we can set 'copiedFontData' to true here
|
|
* without waiting for the results of that constructor.
|
|
*/
|
|
copiedFontData = true;
|
|
Font font = new Font(tFile, fontFormat, true, tracker);
|
|
return font;
|
|
} finally {
|
|
if (tracker != null) {
|
|
tracker.remove(tFile);
|
|
}
|
|
if (!copiedFontData) {
|
|
if (tracker != null) {
|
|
tracker.subBytes(totalSize);
|
|
}
|
|
AccessController.doPrivileged(
|
|
new PrivilegedExceptionAction<Void>() {
|
|
public Void run() {
|
|
tFile.delete();
|
|
return null;
|
|
}
|
|
}
|
|
);
|
|
}
|
|
}
|
|
} catch (Throwable t) {
|
|
if (t instanceof FontFormatException) {
|
|
throw (FontFormatException)t;
|
|
}
|
|
if (t instanceof IOException) {
|
|
throw (IOException)t;
|
|
}
|
|
Throwable cause = t.getCause();
|
|
if (cause instanceof FontFormatException) {
|
|
throw (FontFormatException)cause;
|
|
}
|
|
throw new IOException("Problem reading font data.");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a new <code>Font</code> using the specified font type
|
|
* and the specified font file. The new <code>Font</code> is
|
|
* created with a point size of 1 and style {@link #PLAIN PLAIN}.
|
|
* This base font can then be used with the <code>deriveFont</code>
|
|
* methods in this class to derive new <code>Font</code> objects with
|
|
* varying sizes, styles, transforms and font features.
|
|
* @param fontFormat the type of the <code>Font</code>, which is
|
|
* {@link #TRUETYPE_FONT TRUETYPE_FONT} if a TrueType resource is
|
|
* specified or {@link #TYPE1_FONT TYPE1_FONT} if a Type 1 resource is
|
|
* specified.
|
|
* So long as the returned font, or its derived fonts are referenced
|
|
* the implementation may continue to access <code>fontFile</code>
|
|
* to retrieve font data. Thus the results are undefined if the file
|
|
* is changed, or becomes inaccessible.
|
|
* <p>
|
|
* To make the <code>Font</code> available to Font constructors the
|
|
* returned <code>Font</code> must be registered in the
|
|
* <code>GraphicsEnviroment</code> by calling
|
|
* {@link GraphicsEnvironment#registerFont(Font) registerFont(Font)}.
|
|
* @param fontFile a <code>File</code> object representing the
|
|
* input data for the font.
|
|
* @return a new <code>Font</code> created with the specified font type.
|
|
* @throws IllegalArgumentException if <code>fontFormat</code> is not
|
|
* <code>TRUETYPE_FONT</code>or<code>TYPE1_FONT</code>.
|
|
* @throws NullPointerException if <code>fontFile</code> is null.
|
|
* @throws IOException if the <code>fontFile</code> cannot be read.
|
|
* @throws FontFormatException if <code>fontFile</code> does
|
|
* not contain the required font tables for the specified format.
|
|
* @throws SecurityException if the executing code does not have
|
|
* permission to read from the file.
|
|
* @see GraphicsEnvironment#registerFont(Font)
|
|
* @since 1.5
|
|
*/
|
|
public static Font createFont(int fontFormat, File fontFile)
|
|
throws java.awt.FontFormatException, java.io.IOException {
|
|
|
|
fontFile = new File(fontFile.getPath());
|
|
|
|
if (fontFormat != Font.TRUETYPE_FONT &&
|
|
fontFormat != Font.TYPE1_FONT) {
|
|
throw new IllegalArgumentException ("font format not recognized");
|
|
}
|
|
SecurityManager sm = System.getSecurityManager();
|
|
if (sm != null) {
|
|
FilePermission filePermission =
|
|
new FilePermission(fontFile.getPath(), "read");
|
|
sm.checkPermission(filePermission);
|
|
}
|
|
if (!fontFile.canRead()) {
|
|
throw new IOException("Can't read " + fontFile);
|
|
}
|
|
return new Font(fontFile, fontFormat, false, null);
|
|
}
|
|
|
|
/**
|
|
* Returns a copy of the transform associated with this
|
|
* <code>Font</code>. This transform is not necessarily the one
|
|
* used to construct the font. If the font has algorithmic
|
|
* superscripting or width adjustment, this will be incorporated
|
|
* into the returned <code>AffineTransform</code>.
|
|
* <p>
|
|
* Typically, fonts will not be transformed. Clients generally
|
|
* should call {@link #isTransformed} first, and only call this
|
|
* method if <code>isTransformed</code> returns true.
|
|
*
|
|
* @return an {@link AffineTransform} object representing the
|
|
* transform attribute of this <code>Font</code> object.
|
|
*/
|
|
public AffineTransform getTransform() {
|
|
/* The most common case is the identity transform. Most callers
|
|
* should call isTransformed() first, to decide if they need to
|
|
* get the transform, but some may not. Here we check to see
|
|
* if we have a nonidentity transform, and only do the work to
|
|
* fetch and/or compute it if so, otherwise we return a new
|
|
* identity transform.
|
|
*
|
|
* Note that the transform is _not_ necessarily the same as
|
|
* the transform passed in as an Attribute in a Map, as the
|
|
* transform returned will also reflect the effects of WIDTH and
|
|
* SUPERSCRIPT attributes. Clients who want the actual transform
|
|
* need to call getRequestedAttributes.
|
|
*/
|
|
if (nonIdentityTx) {
|
|
AttributeValues values = getAttributeValues();
|
|
|
|
AffineTransform at = values.isNonDefault(ETRANSFORM)
|
|
? new AffineTransform(values.getTransform())
|
|
: new AffineTransform();
|
|
|
|
if (values.getSuperscript() != 0) {
|
|
// can't get ascent and descent here, recursive call to this fn,
|
|
// so use pointsize
|
|
// let users combine super- and sub-scripting
|
|
|
|
int superscript = values.getSuperscript();
|
|
|
|
double trans = 0;
|
|
int n = 0;
|
|
boolean up = superscript > 0;
|
|
int sign = up ? -1 : 1;
|
|
int ss = up ? superscript : -superscript;
|
|
|
|
while ((ss & 7) > n) {
|
|
int newn = ss & 7;
|
|
trans += sign * (ssinfo[newn] - ssinfo[n]);
|
|
ss >>= 3;
|
|
sign = -sign;
|
|
n = newn;
|
|
}
|
|
trans *= pointSize;
|
|
double scale = Math.pow(2./3., n);
|
|
|
|
at.preConcatenate(AffineTransform.getTranslateInstance(0, trans));
|
|
at.scale(scale, scale);
|
|
|
|
// note on placement and italics
|
|
// We preconcatenate the transform because we don't want to translate along
|
|
// the italic angle, but purely perpendicular to the baseline. While this
|
|
// looks ok for superscripts, it can lead subscripts to stack on each other
|
|
// and bring the following text too close. The way we deal with potential
|
|
// collisions that can occur in the case of italics is by adjusting the
|
|
// horizontal spacing of the adjacent glyphvectors. Examine the italic
|
|
// angle of both vectors, if one is non-zero, compute the minimum ascent
|
|
// and descent, and then the x position at each for each vector along its
|
|
// italic angle starting from its (offset) baseline. Compute the difference
|
|
// between the x positions and use the maximum difference to adjust the
|
|
// position of the right gv.
|
|
}
|
|
|
|
if (values.isNonDefault(EWIDTH)) {
|
|
at.scale(values.getWidth(), 1f);
|
|
}
|
|
|
|
return at;
|
|
}
|
|
|
|
return new AffineTransform();
|
|
}
|
|
|
|
// x = r^0 + r^1 + r^2... r^n
|
|
// rx = r^1 + r^2 + r^3... r^(n+1)
|
|
// x - rx = r^0 - r^(n+1)
|
|
// x (1 - r) = r^0 - r^(n+1)
|
|
// x = (r^0 - r^(n+1)) / (1 - r)
|
|
// x = (1 - r^(n+1)) / (1 - r)
|
|
|
|
// scale ratio is 2/3
|
|
// trans = 1/2 of ascent * x
|
|
// assume ascent is 3/4 of point size
|
|
|
|
private static final float[] ssinfo = {
|
|
0.0f,
|
|
0.375f,
|
|
0.625f,
|
|
0.7916667f,
|
|
0.9027778f,
|
|
0.9768519f,
|
|
1.0262346f,
|
|
1.0591564f,
|
|
};
|
|
|
|
/**
|
|
* Returns the family name of this <code>Font</code>.
|
|
*
|
|
* <p>The family name of a font is font specific. Two fonts such as
|
|
* Helvetica Italic and Helvetica Bold have the same family name,
|
|
* <i>Helvetica</i>, whereas their font face names are
|
|
* <i>Helvetica Bold</i> and <i>Helvetica Italic</i>. The list of
|
|
* available family names may be obtained by using the
|
|
* {@link GraphicsEnvironment#getAvailableFontFamilyNames()} method.
|
|
*
|
|
* <p>Use <code>getName</code> to get the logical name of the font.
|
|
* Use <code>getFontName</code> to get the font face name of the font.
|
|
* @return a <code>String</code> that is the family name of this
|
|
* <code>Font</code>.
|
|
*
|
|
* @see #getName
|
|
* @see #getFontName
|
|
* @since JDK1.1
|
|
*/
|
|
public String getFamily() {
|
|
return getFamily_NoClientCode();
|
|
}
|
|
// NOTE: This method is called by privileged threads.
|
|
// We implement this functionality in a package-private
|
|
// method to insure that it cannot be overridden by client
|
|
// subclasses.
|
|
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
|
|
final String getFamily_NoClientCode() {
|
|
return getFamily(Locale.getDefault());
|
|
}
|
|
|
|
/**
|
|
* Returns the family name of this <code>Font</code>, localized for
|
|
* the specified locale.
|
|
*
|
|
* <p>The family name of a font is font specific. Two fonts such as
|
|
* Helvetica Italic and Helvetica Bold have the same family name,
|
|
* <i>Helvetica</i>, whereas their font face names are
|
|
* <i>Helvetica Bold</i> and <i>Helvetica Italic</i>. The list of
|
|
* available family names may be obtained by using the
|
|
* {@link GraphicsEnvironment#getAvailableFontFamilyNames()} method.
|
|
*
|
|
* <p>Use <code>getFontName</code> to get the font face name of the font.
|
|
* @param l locale for which to get the family name
|
|
* @return a <code>String</code> representing the family name of the
|
|
* font, localized for the specified locale.
|
|
* @see #getFontName
|
|
* @see java.util.Locale
|
|
* @since 1.2
|
|
*/
|
|
public String getFamily(Locale l) {
|
|
if (l == null) {
|
|
throw new NullPointerException("null locale doesn't mean default");
|
|
}
|
|
return getFont2D().getFamilyName(l);
|
|
}
|
|
|
|
/**
|
|
* Returns the postscript name of this <code>Font</code>.
|
|
* Use <code>getFamily</code> to get the family name of the font.
|
|
* Use <code>getFontName</code> to get the font face name of the font.
|
|
* @return a <code>String</code> representing the postscript name of
|
|
* this <code>Font</code>.
|
|
* @since 1.2
|
|
*/
|
|
public String getPSName() {
|
|
return getFont2D().getPostscriptName();
|
|
}
|
|
|
|
/**
|
|
* Returns the logical name of this <code>Font</code>.
|
|
* Use <code>getFamily</code> to get the family name of the font.
|
|
* Use <code>getFontName</code> to get the font face name of the font.
|
|
* @return a <code>String</code> representing the logical name of
|
|
* this <code>Font</code>.
|
|
* @see #getFamily
|
|
* @see #getFontName
|
|
* @since JDK1.0
|
|
*/
|
|
public String getName() {
|
|
return name;
|
|
}
|
|
|
|
/**
|
|
* Returns the font face name of this <code>Font</code>. For example,
|
|
* Helvetica Bold could be returned as a font face name.
|
|
* Use <code>getFamily</code> to get the family name of the font.
|
|
* Use <code>getName</code> to get the logical name of the font.
|
|
* @return a <code>String</code> representing the font face name of
|
|
* this <code>Font</code>.
|
|
* @see #getFamily
|
|
* @see #getName
|
|
* @since 1.2
|
|
*/
|
|
public String getFontName() {
|
|
return getFontName(Locale.getDefault());
|
|
}
|
|
|
|
/**
|
|
* Returns the font face name of the <code>Font</code>, localized
|
|
* for the specified locale. For example, Helvetica Fett could be
|
|
* returned as the font face name.
|
|
* Use <code>getFamily</code> to get the family name of the font.
|
|
* @param l a locale for which to get the font face name
|
|
* @return a <code>String</code> representing the font face name,
|
|
* localized for the specified locale.
|
|
* @see #getFamily
|
|
* @see java.util.Locale
|
|
*/
|
|
public String getFontName(Locale l) {
|
|
if (l == null) {
|
|
throw new NullPointerException("null locale doesn't mean default");
|
|
}
|
|
return getFont2D().getFontName(l);
|
|
}
|
|
|
|
/**
|
|
* Returns the style of this <code>Font</code>. The style can be
|
|
* PLAIN, BOLD, ITALIC, or BOLD+ITALIC.
|
|
* @return the style of this <code>Font</code>
|
|
* @see #isPlain
|
|
* @see #isBold
|
|
* @see #isItalic
|
|
* @since JDK1.0
|
|
*/
|
|
public int getStyle() {
|
|
return style;
|
|
}
|
|
|
|
/**
|
|
* Returns the point size of this <code>Font</code>, rounded to
|
|
* an integer.
|
|
* Most users are familiar with the idea of using <i>point size</i> to
|
|
* specify the size of glyphs in a font. This point size defines a
|
|
* measurement between the baseline of one line to the baseline of the
|
|
* following line in a single spaced text document. The point size is
|
|
* based on <i>typographic points</i>, approximately 1/72 of an inch.
|
|
* <p>
|
|
* The Java(tm)2D API adopts the convention that one point is
|
|
* equivalent to one unit in user coordinates. When using a
|
|
* normalized transform for converting user space coordinates to
|
|
* device space coordinates 72 user
|
|
* space units equal 1 inch in device space. In this case one point
|
|
* is 1/72 of an inch.
|
|
* @return the point size of this <code>Font</code> in 1/72 of an
|
|
* inch units.
|
|
* @see #getSize2D
|
|
* @see GraphicsConfiguration#getDefaultTransform
|
|
* @see GraphicsConfiguration#getNormalizingTransform
|
|
* @since JDK1.0
|
|
*/
|
|
public int getSize() {
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* Returns the point size of this <code>Font</code> in
|
|
* <code>float</code> value.
|
|
* @return the point size of this <code>Font</code> as a
|
|
* <code>float</code> value.
|
|
* @see #getSize
|
|
* @since 1.2
|
|
*/
|
|
public float getSize2D() {
|
|
return pointSize;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> object's style is
|
|
* PLAIN.
|
|
* @return <code>true</code> if this <code>Font</code> has a
|
|
* PLAIN style;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Font#getStyle
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isPlain() {
|
|
return style == 0;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> object's style is
|
|
* BOLD.
|
|
* @return <code>true</code> if this <code>Font</code> object's
|
|
* style is BOLD;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Font#getStyle
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isBold() {
|
|
return (style & BOLD) != 0;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> object's style is
|
|
* ITALIC.
|
|
* @return <code>true</code> if this <code>Font</code> object's
|
|
* style is ITALIC;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Font#getStyle
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isItalic() {
|
|
return (style & ITALIC) != 0;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> object has a
|
|
* transform that affects its size in addition to the Size
|
|
* attribute.
|
|
* @return <code>true</code> if this <code>Font</code> object
|
|
* has a non-identity AffineTransform attribute.
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Font#getTransform
|
|
* @since 1.4
|
|
*/
|
|
public boolean isTransformed() {
|
|
return nonIdentityTx;
|
|
}
|
|
|
|
/**
|
|
* Return true if this Font contains attributes that require extra
|
|
* layout processing.
|
|
* @return true if the font has layout attributes
|
|
* @since 1.6
|
|
*/
|
|
public boolean hasLayoutAttributes() {
|
|
return hasLayoutAttributes;
|
|
}
|
|
|
|
/**
|
|
* Returns a <code>Font</code> object from the system properties list.
|
|
* <code>nm</code> is treated as the name of a system property to be
|
|
* obtained. The <code>String</code> value of this property is then
|
|
* interpreted as a <code>Font</code> object according to the
|
|
* specification of <code>Font.decode(String)</code>
|
|
* If the specified property is not found, or the executing code does
|
|
* not have permission to read the property, null is returned instead.
|
|
*
|
|
* @param nm the property name
|
|
* @return a <code>Font</code> object that the property name
|
|
* describes, or null if no such property exists.
|
|
* @throws NullPointerException if nm is null.
|
|
* @since 1.2
|
|
* @see #decode(String)
|
|
*/
|
|
public static Font getFont(String nm) {
|
|
return getFont(nm, null);
|
|
}
|
|
|
|
/**
|
|
* Returns the <code>Font</code> that the <code>str</code>
|
|
* argument describes.
|
|
* To ensure that this method returns the desired Font,
|
|
* format the <code>str</code> parameter in
|
|
* one of these ways
|
|
*
|
|
* <ul>
|
|
* <li><em>fontname-style-pointsize</em>
|
|
* <li><em>fontname-pointsize</em>
|
|
* <li><em>fontname-style</em>
|
|
* <li><em>fontname</em>
|
|
* <li><em>fontname style pointsize</em>
|
|
* <li><em>fontname pointsize</em>
|
|
* <li><em>fontname style</em>
|
|
* <li><em>fontname</em>
|
|
* </ul>
|
|
* in which <i>style</i> is one of the four
|
|
* case-insensitive strings:
|
|
* <code>"PLAIN"</code>, <code>"BOLD"</code>, <code>"BOLDITALIC"</code>, or
|
|
* <code>"ITALIC"</code>, and pointsize is a positive decimal integer
|
|
* representation of the point size.
|
|
* For example, if you want a font that is Arial, bold, with
|
|
* a point size of 18, you would call this method with:
|
|
* "Arial-BOLD-18".
|
|
* This is equivalent to calling the Font constructor :
|
|
* <code>new Font("Arial", Font.BOLD, 18);</code>
|
|
* and the values are interpreted as specified by that constructor.
|
|
* <p>
|
|
* A valid trailing decimal field is always interpreted as the pointsize.
|
|
* Therefore a fontname containing a trailing decimal value should not
|
|
* be used in the fontname only form.
|
|
* <p>
|
|
* If a style name field is not one of the valid style strings, it is
|
|
* interpreted as part of the font name, and the default style is used.
|
|
* <p>
|
|
* Only one of ' ' or '-' may be used to separate fields in the input.
|
|
* The identified separator is the one closest to the end of the string
|
|
* which separates a valid pointsize, or a valid style name from
|
|
* the rest of the string.
|
|
* Null (empty) pointsize and style fields are treated
|
|
* as valid fields with the default value for that field.
|
|
*<p>
|
|
* Some font names may include the separator characters ' ' or '-'.
|
|
* If <code>str</code> is not formed with 3 components, e.g. such that
|
|
* <code>style</code> or <code>pointsize</code> fields are not present in
|
|
* <code>str</code>, and <code>fontname</code> also contains a
|
|
* character determined to be the separator character
|
|
* then these characters where they appear as intended to be part of
|
|
* <code>fontname</code> may instead be interpreted as separators
|
|
* so the font name may not be properly recognised.
|
|
*
|
|
* <p>
|
|
* The default size is 12 and the default style is PLAIN.
|
|
* If <code>str</code> does not specify a valid size, the returned
|
|
* <code>Font</code> has a size of 12. If <code>str</code> does not
|
|
* specify a valid style, the returned Font has a style of PLAIN.
|
|
* If you do not specify a valid font name in
|
|
* the <code>str</code> argument, this method will return
|
|
* a font with the family name "Dialog".
|
|
* To determine what font family names are available on
|
|
* your system, use the
|
|
* {@link GraphicsEnvironment#getAvailableFontFamilyNames()} method.
|
|
* If <code>str</code> is <code>null</code>, a new <code>Font</code>
|
|
* is returned with the family name "Dialog", a size of 12 and a
|
|
* PLAIN style.
|
|
* @param str the name of the font, or <code>null</code>
|
|
* @return the <code>Font</code> object that <code>str</code>
|
|
* describes, or a new default <code>Font</code> if
|
|
* <code>str</code> is <code>null</code>.
|
|
* @see #getFamily
|
|
* @since JDK1.1
|
|
*/
|
|
public static Font decode(String str) {
|
|
String fontName = str;
|
|
String styleName = "";
|
|
int fontSize = 12;
|
|
int fontStyle = Font.PLAIN;
|
|
|
|
if (str == null) {
|
|
return new Font(DIALOG, fontStyle, fontSize);
|
|
}
|
|
|
|
int lastHyphen = str.lastIndexOf('-');
|
|
int lastSpace = str.lastIndexOf(' ');
|
|
char sepChar = (lastHyphen > lastSpace) ? '-' : ' ';
|
|
int sizeIndex = str.lastIndexOf(sepChar);
|
|
int styleIndex = str.lastIndexOf(sepChar, sizeIndex-1);
|
|
int strlen = str.length();
|
|
|
|
if (sizeIndex > 0 && sizeIndex+1 < strlen) {
|
|
try {
|
|
fontSize =
|
|
Integer.valueOf(str.substring(sizeIndex+1)).intValue();
|
|
if (fontSize <= 0) {
|
|
fontSize = 12;
|
|
}
|
|
} catch (NumberFormatException e) {
|
|
/* It wasn't a valid size, if we didn't also find the
|
|
* start of the style string perhaps this is the style */
|
|
styleIndex = sizeIndex;
|
|
sizeIndex = strlen;
|
|
if (str.charAt(sizeIndex-1) == sepChar) {
|
|
sizeIndex--;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (styleIndex >= 0 && styleIndex+1 < strlen) {
|
|
styleName = str.substring(styleIndex+1, sizeIndex);
|
|
styleName = styleName.toLowerCase(Locale.ENGLISH);
|
|
if (styleName.equals("bolditalic")) {
|
|
fontStyle = Font.BOLD | Font.ITALIC;
|
|
} else if (styleName.equals("italic")) {
|
|
fontStyle = Font.ITALIC;
|
|
} else if (styleName.equals("bold")) {
|
|
fontStyle = Font.BOLD;
|
|
} else if (styleName.equals("plain")) {
|
|
fontStyle = Font.PLAIN;
|
|
} else {
|
|
/* this string isn't any of the expected styles, so
|
|
* assume its part of the font name
|
|
*/
|
|
styleIndex = sizeIndex;
|
|
if (str.charAt(styleIndex-1) == sepChar) {
|
|
styleIndex--;
|
|
}
|
|
}
|
|
fontName = str.substring(0, styleIndex);
|
|
|
|
} else {
|
|
int fontEnd = strlen;
|
|
if (styleIndex > 0) {
|
|
fontEnd = styleIndex;
|
|
} else if (sizeIndex > 0) {
|
|
fontEnd = sizeIndex;
|
|
}
|
|
if (fontEnd > 0 && str.charAt(fontEnd-1) == sepChar) {
|
|
fontEnd--;
|
|
}
|
|
fontName = str.substring(0, fontEnd);
|
|
}
|
|
|
|
return new Font(fontName, fontStyle, fontSize);
|
|
}
|
|
|
|
/**
|
|
* Gets the specified <code>Font</code> from the system properties
|
|
* list. As in the <code>getProperty</code> method of
|
|
* <code>System</code>, the first
|
|
* argument is treated as the name of a system property to be
|
|
* obtained. The <code>String</code> value of this property is then
|
|
* interpreted as a <code>Font</code> object.
|
|
* <p>
|
|
* The property value should be one of the forms accepted by
|
|
* <code>Font.decode(String)</code>
|
|
* If the specified property is not found, or the executing code does not
|
|
* have permission to read the property, the <code>font</code>
|
|
* argument is returned instead.
|
|
* @param nm the case-insensitive property name
|
|
* @param font a default <code>Font</code> to return if property
|
|
* <code>nm</code> is not defined
|
|
* @return the <code>Font</code> value of the property.
|
|
* @throws NullPointerException if nm is null.
|
|
* @see #decode(String)
|
|
*/
|
|
public static Font getFont(String nm, Font font) {
|
|
String str = null;
|
|
try {
|
|
str =System.getProperty(nm);
|
|
} catch(SecurityException e) {
|
|
}
|
|
if (str == null) {
|
|
return font;
|
|
}
|
|
return decode ( str );
|
|
}
|
|
|
|
transient int hash;
|
|
/**
|
|
* Returns a hashcode for this <code>Font</code>.
|
|
* @return a hashcode value for this <code>Font</code>.
|
|
* @since JDK1.0
|
|
*/
|
|
public int hashCode() {
|
|
if (hash == 0) {
|
|
hash = name.hashCode() ^ style ^ size;
|
|
/* It is possible many fonts differ only in transform.
|
|
* So include the transform in the hash calculation.
|
|
* nonIdentityTx is set whenever there is a transform in
|
|
* 'values'. The tests for null are required because it can
|
|
* also be set for other reasons.
|
|
*/
|
|
if (nonIdentityTx &&
|
|
values != null && values.getTransform() != null) {
|
|
hash ^= values.getTransform().hashCode();
|
|
}
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
/**
|
|
* Compares this <code>Font</code> object to the specified
|
|
* <code>Object</code>.
|
|
* @param obj the <code>Object</code> to compare
|
|
* @return <code>true</code> if the objects are the same
|
|
* or if the argument is a <code>Font</code> object
|
|
* describing the same font as this object;
|
|
* <code>false</code> otherwise.
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean equals(Object obj) {
|
|
if (obj == this) {
|
|
return true;
|
|
}
|
|
|
|
if (obj != null) {
|
|
try {
|
|
Font font = (Font)obj;
|
|
if (size == font.size &&
|
|
style == font.style &&
|
|
nonIdentityTx == font.nonIdentityTx &&
|
|
hasLayoutAttributes == font.hasLayoutAttributes &&
|
|
pointSize == font.pointSize &&
|
|
name.equals(font.name)) {
|
|
|
|
/* 'values' is usually initialized lazily, except when
|
|
* the font is constructed from a Map, or derived using
|
|
* a Map or other values. So if only one font has
|
|
* the field initialized we need to initialize it in
|
|
* the other instance and compare.
|
|
*/
|
|
if (values == null) {
|
|
if (font.values == null) {
|
|
return true;
|
|
} else {
|
|
return getAttributeValues().equals(font.values);
|
|
}
|
|
} else {
|
|
return values.equals(font.getAttributeValues());
|
|
}
|
|
}
|
|
}
|
|
catch (ClassCastException e) {
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Converts this <code>Font</code> object to a <code>String</code>
|
|
* representation.
|
|
* @return a <code>String</code> representation of this
|
|
* <code>Font</code> object.
|
|
* @since JDK1.0
|
|
*/
|
|
// NOTE: This method may be called by privileged threads.
|
|
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
|
|
public String toString() {
|
|
String strStyle;
|
|
|
|
if (isBold()) {
|
|
strStyle = isItalic() ? "bolditalic" : "bold";
|
|
} else {
|
|
strStyle = isItalic() ? "italic" : "plain";
|
|
}
|
|
|
|
return getClass().getName() + "[family=" + getFamily() + ",name=" + name + ",style=" +
|
|
strStyle + ",size=" + size + "]";
|
|
} // toString()
|
|
|
|
|
|
/** Serialization support. A <code>readObject</code>
|
|
* method is neccessary because the constructor creates
|
|
* the font's peer, and we can't serialize the peer.
|
|
* Similarly the computed font "family" may be different
|
|
* at <code>readObject</code> time than at
|
|
* <code>writeObject</code> time. An integer version is
|
|
* written so that future versions of this class will be
|
|
* able to recognize serialized output from this one.
|
|
*/
|
|
/**
|
|
* The <code>Font</code> Serializable Data Form.
|
|
*
|
|
* @serial
|
|
*/
|
|
private int fontSerializedDataVersion = 1;
|
|
|
|
/**
|
|
* Writes default serializable fields to a stream.
|
|
*
|
|
* @param s the <code>ObjectOutputStream</code> to write
|
|
* @see AWTEventMulticaster#save(ObjectOutputStream, String, EventListener)
|
|
* @see #readObject(java.io.ObjectInputStream)
|
|
*/
|
|
private void writeObject(java.io.ObjectOutputStream s)
|
|
throws java.lang.ClassNotFoundException,
|
|
java.io.IOException
|
|
{
|
|
if (values != null) {
|
|
synchronized(values) {
|
|
// transient
|
|
fRequestedAttributes = values.toSerializableHashtable();
|
|
s.defaultWriteObject();
|
|
fRequestedAttributes = null;
|
|
}
|
|
} else {
|
|
s.defaultWriteObject();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Reads the <code>ObjectInputStream</code>.
|
|
* Unrecognized keys or values will be ignored.
|
|
*
|
|
* @param s the <code>ObjectInputStream</code> to read
|
|
* @serial
|
|
* @see #writeObject(java.io.ObjectOutputStream)
|
|
*/
|
|
private void readObject(java.io.ObjectInputStream s)
|
|
throws java.lang.ClassNotFoundException,
|
|
java.io.IOException
|
|
{
|
|
s.defaultReadObject();
|
|
if (pointSize == 0) {
|
|
pointSize = (float)size;
|
|
}
|
|
|
|
// Handle fRequestedAttributes.
|
|
// in 1.5, we always streamed out the font values plus
|
|
// TRANSFORM, SUPERSCRIPT, and WIDTH, regardless of whether the
|
|
// values were default or not. In 1.6 we only stream out
|
|
// defined values. So, 1.6 streams in from a 1.5 stream,
|
|
// it check each of these values and 'undefines' it if the
|
|
// value is the default.
|
|
|
|
if (fRequestedAttributes != null) {
|
|
values = getAttributeValues(); // init
|
|
AttributeValues extras =
|
|
AttributeValues.fromSerializableHashtable(fRequestedAttributes);
|
|
if (!AttributeValues.is16Hashtable(fRequestedAttributes)) {
|
|
extras.unsetDefault(); // if legacy stream, undefine these
|
|
}
|
|
values = getAttributeValues().merge(extras);
|
|
this.nonIdentityTx = values.anyNonDefault(EXTRA_MASK);
|
|
this.hasLayoutAttributes = values.anyNonDefault(LAYOUT_MASK);
|
|
|
|
fRequestedAttributes = null; // don't need it any more
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the number of glyphs in this <code>Font</code>. Glyph codes
|
|
* for this <code>Font</code> range from 0 to
|
|
* <code>getNumGlyphs()</code> - 1.
|
|
* @return the number of glyphs in this <code>Font</code>.
|
|
* @since 1.2
|
|
*/
|
|
public int getNumGlyphs() {
|
|
return getFont2D().getNumGlyphs();
|
|
}
|
|
|
|
/**
|
|
* Returns the glyphCode which is used when this <code>Font</code>
|
|
* does not have a glyph for a specified unicode code point.
|
|
* @return the glyphCode of this <code>Font</code>.
|
|
* @since 1.2
|
|
*/
|
|
public int getMissingGlyphCode() {
|
|
return getFont2D().getMissingGlyphCode();
|
|
}
|
|
|
|
/**
|
|
* Returns the baseline appropriate for displaying this character.
|
|
* <p>
|
|
* Large fonts can support different writing systems, and each system can
|
|
* use a different baseline.
|
|
* The character argument determines the writing system to use. Clients
|
|
* should not assume all characters use the same baseline.
|
|
*
|
|
* @param c a character used to identify the writing system
|
|
* @return the baseline appropriate for the specified character.
|
|
* @see LineMetrics#getBaselineOffsets
|
|
* @see #ROMAN_BASELINE
|
|
* @see #CENTER_BASELINE
|
|
* @see #HANGING_BASELINE
|
|
* @since 1.2
|
|
*/
|
|
public byte getBaselineFor(char c) {
|
|
return getFont2D().getBaselineFor(c);
|
|
}
|
|
|
|
/**
|
|
* Returns a map of font attributes available in this
|
|
* <code>Font</code>. Attributes include things like ligatures and
|
|
* glyph substitution.
|
|
* @return the attributes map of this <code>Font</code>.
|
|
*/
|
|
public Map<TextAttribute,?> getAttributes(){
|
|
return new AttributeMap(getAttributeValues());
|
|
}
|
|
|
|
/**
|
|
* Returns the keys of all the attributes supported by this
|
|
* <code>Font</code>. These attributes can be used to derive other
|
|
* fonts.
|
|
* @return an array containing the keys of all the attributes
|
|
* supported by this <code>Font</code>.
|
|
* @since 1.2
|
|
*/
|
|
public Attribute[] getAvailableAttributes() {
|
|
// FONT is not supported by Font
|
|
|
|
Attribute attributes[] = {
|
|
TextAttribute.FAMILY,
|
|
TextAttribute.WEIGHT,
|
|
TextAttribute.WIDTH,
|
|
TextAttribute.POSTURE,
|
|
TextAttribute.SIZE,
|
|
TextAttribute.TRANSFORM,
|
|
TextAttribute.SUPERSCRIPT,
|
|
TextAttribute.CHAR_REPLACEMENT,
|
|
TextAttribute.FOREGROUND,
|
|
TextAttribute.BACKGROUND,
|
|
TextAttribute.UNDERLINE,
|
|
TextAttribute.STRIKETHROUGH,
|
|
TextAttribute.RUN_DIRECTION,
|
|
TextAttribute.BIDI_EMBEDDING,
|
|
TextAttribute.JUSTIFICATION,
|
|
TextAttribute.INPUT_METHOD_HIGHLIGHT,
|
|
TextAttribute.INPUT_METHOD_UNDERLINE,
|
|
TextAttribute.SWAP_COLORS,
|
|
TextAttribute.NUMERIC_SHAPING,
|
|
TextAttribute.KERNING,
|
|
TextAttribute.LIGATURES,
|
|
TextAttribute.TRACKING,
|
|
};
|
|
|
|
return attributes;
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating this
|
|
* <code>Font</code> object and applying a new style and size.
|
|
* @param style the style for the new <code>Font</code>
|
|
* @param size the size for the new <code>Font</code>
|
|
* @return a new <code>Font</code> object.
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(int style, float size){
|
|
if (values == null) {
|
|
return new Font(name, style, size, createdFont, font2DHandle);
|
|
}
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
int oldStyle = (this.style != style) ? this.style : -1;
|
|
applyStyle(style, newValues);
|
|
newValues.setSize(size);
|
|
return new Font(newValues, null, oldStyle, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating this
|
|
* <code>Font</code> object and applying a new style and transform.
|
|
* @param style the style for the new <code>Font</code>
|
|
* @param trans the <code>AffineTransform</code> associated with the
|
|
* new <code>Font</code>
|
|
* @return a new <code>Font</code> object.
|
|
* @throws IllegalArgumentException if <code>trans</code> is
|
|
* <code>null</code>
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(int style, AffineTransform trans){
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
int oldStyle = (this.style != style) ? this.style : -1;
|
|
applyStyle(style, newValues);
|
|
applyTransform(trans, newValues);
|
|
return new Font(newValues, null, oldStyle, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating the current
|
|
* <code>Font</code> object and applying a new size to it.
|
|
* @param size the size for the new <code>Font</code>.
|
|
* @return a new <code>Font</code> object.
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(float size){
|
|
if (values == null) {
|
|
return new Font(name, style, size, createdFont, font2DHandle);
|
|
}
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
newValues.setSize(size);
|
|
return new Font(newValues, null, -1, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating the current
|
|
* <code>Font</code> object and applying a new transform to it.
|
|
* @param trans the <code>AffineTransform</code> associated with the
|
|
* new <code>Font</code>
|
|
* @return a new <code>Font</code> object.
|
|
* @throws IllegalArgumentException if <code>trans</code> is
|
|
* <code>null</code>
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(AffineTransform trans){
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
applyTransform(trans, newValues);
|
|
return new Font(newValues, null, -1, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating the current
|
|
* <code>Font</code> object and applying a new style to it.
|
|
* @param style the style for the new <code>Font</code>
|
|
* @return a new <code>Font</code> object.
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(int style){
|
|
if (values == null) {
|
|
return new Font(name, style, size, createdFont, font2DHandle);
|
|
}
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
int oldStyle = (this.style != style) ? this.style : -1;
|
|
applyStyle(style, newValues);
|
|
return new Font(newValues, null, oldStyle, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Creates a new <code>Font</code> object by replicating the current
|
|
* <code>Font</code> object and applying a new set of font attributes
|
|
* to it.
|
|
*
|
|
* @param attributes a map of attributes enabled for the new
|
|
* <code>Font</code>
|
|
* @return a new <code>Font</code> object.
|
|
* @since 1.2
|
|
*/
|
|
public Font deriveFont(Map<? extends Attribute, ?> attributes) {
|
|
if (attributes == null) {
|
|
return this;
|
|
}
|
|
AttributeValues newValues = getAttributeValues().clone();
|
|
newValues.merge(attributes, RECOGNIZED_MASK);
|
|
|
|
return new Font(newValues, name, style, createdFont, font2DHandle);
|
|
}
|
|
|
|
/**
|
|
* Checks if this <code>Font</code> has a glyph for the specified
|
|
* character.
|
|
*
|
|
* <p> <b>Note:</b> This method cannot handle <a
|
|
* href="../../java/lang/Character.html#supplementary"> supplementary
|
|
* characters</a>. To support all Unicode characters, including
|
|
* supplementary characters, use the {@link #canDisplay(int)}
|
|
* method or <code>canDisplayUpTo</code> methods.
|
|
*
|
|
* @param c the character for which a glyph is needed
|
|
* @return <code>true</code> if this <code>Font</code> has a glyph for this
|
|
* character; <code>false</code> otherwise.
|
|
* @since 1.2
|
|
*/
|
|
public boolean canDisplay(char c){
|
|
return getFont2D().canDisplay(c);
|
|
}
|
|
|
|
/**
|
|
* Checks if this <code>Font</code> has a glyph for the specified
|
|
* character.
|
|
*
|
|
* @param codePoint the character (Unicode code point) for which a glyph
|
|
* is needed.
|
|
* @return <code>true</code> if this <code>Font</code> has a glyph for the
|
|
* character; <code>false</code> otherwise.
|
|
* @throws IllegalArgumentException if the code point is not a valid Unicode
|
|
* code point.
|
|
* @see Character#isValidCodePoint(int)
|
|
* @since 1.5
|
|
*/
|
|
public boolean canDisplay(int codePoint) {
|
|
if (!Character.isValidCodePoint(codePoint)) {
|
|
throw new IllegalArgumentException("invalid code point: " +
|
|
Integer.toHexString(codePoint));
|
|
}
|
|
return getFont2D().canDisplay(codePoint);
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> can display a
|
|
* specified <code>String</code>. For strings with Unicode encoding,
|
|
* it is important to know if a particular font can display the
|
|
* string. This method returns an offset into the <code>String</code>
|
|
* <code>str</code> which is the first character this
|
|
* <code>Font</code> cannot display without using the missing glyph
|
|
* code. If the <code>Font</code> can display all characters, -1 is
|
|
* returned.
|
|
* @param str a <code>String</code> object
|
|
* @return an offset into <code>str</code> that points
|
|
* to the first character in <code>str</code> that this
|
|
* <code>Font</code> cannot display; or <code>-1</code> if
|
|
* this <code>Font</code> can display all characters in
|
|
* <code>str</code>.
|
|
* @since 1.2
|
|
*/
|
|
public int canDisplayUpTo(String str) {
|
|
Font2D font2d = getFont2D();
|
|
int len = str.length();
|
|
for (int i = 0; i < len; i++) {
|
|
char c = str.charAt(i);
|
|
if (font2d.canDisplay(c)) {
|
|
continue;
|
|
}
|
|
if (!Character.isHighSurrogate(c)) {
|
|
return i;
|
|
}
|
|
if (!font2d.canDisplay(str.codePointAt(i))) {
|
|
return i;
|
|
}
|
|
i++;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> can display
|
|
* the characters in the specified <code>text</code>
|
|
* starting at <code>start</code> and ending at
|
|
* <code>limit</code>. This method is a convenience overload.
|
|
* @param text the specified array of <code>char</code> values
|
|
* @param start the specified starting offset (in
|
|
* <code>char</code>s) into the specified array of
|
|
* <code>char</code> values
|
|
* @param limit the specified ending offset (in
|
|
* <code>char</code>s) into the specified array of
|
|
* <code>char</code> values
|
|
* @return an offset into <code>text</code> that points
|
|
* to the first character in <code>text</code> that this
|
|
* <code>Font</code> cannot display; or <code>-1</code> if
|
|
* this <code>Font</code> can display all characters in
|
|
* <code>text</code>.
|
|
* @since 1.2
|
|
*/
|
|
public int canDisplayUpTo(char[] text, int start, int limit) {
|
|
Font2D font2d = getFont2D();
|
|
for (int i = start; i < limit; i++) {
|
|
char c = text[i];
|
|
if (font2d.canDisplay(c)) {
|
|
continue;
|
|
}
|
|
if (!Character.isHighSurrogate(c)) {
|
|
return i;
|
|
}
|
|
if (!font2d.canDisplay(Character.codePointAt(text, i, limit))) {
|
|
return i;
|
|
}
|
|
i++;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Indicates whether or not this <code>Font</code> can display the
|
|
* text specified by the <code>iter</code> starting at
|
|
* <code>start</code> and ending at <code>limit</code>.
|
|
*
|
|
* @param iter a {@link CharacterIterator} object
|
|
* @param start the specified starting offset into the specified
|
|
* <code>CharacterIterator</code>.
|
|
* @param limit the specified ending offset into the specified
|
|
* <code>CharacterIterator</code>.
|
|
* @return an offset into <code>iter</code> that points
|
|
* to the first character in <code>iter</code> that this
|
|
* <code>Font</code> cannot display; or <code>-1</code> if
|
|
* this <code>Font</code> can display all characters in
|
|
* <code>iter</code>.
|
|
* @since 1.2
|
|
*/
|
|
public int canDisplayUpTo(CharacterIterator iter, int start, int limit) {
|
|
Font2D font2d = getFont2D();
|
|
char c = iter.setIndex(start);
|
|
for (int i = start; i < limit; i++, c = iter.next()) {
|
|
if (font2d.canDisplay(c)) {
|
|
continue;
|
|
}
|
|
if (!Character.isHighSurrogate(c)) {
|
|
return i;
|
|
}
|
|
char c2 = iter.next();
|
|
// c2 could be CharacterIterator.DONE which is not a low surrogate.
|
|
if (!Character.isLowSurrogate(c2)) {
|
|
return i;
|
|
}
|
|
if (!font2d.canDisplay(Character.toCodePoint(c, c2))) {
|
|
return i;
|
|
}
|
|
i++;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Returns the italic angle of this <code>Font</code>. The italic angle
|
|
* is the inverse slope of the caret which best matches the posture of this
|
|
* <code>Font</code>.
|
|
* @see TextAttribute#POSTURE
|
|
* @return the angle of the ITALIC style of this <code>Font</code>.
|
|
*/
|
|
public float getItalicAngle() {
|
|
return getItalicAngle(null);
|
|
}
|
|
|
|
/* The FRC hints don't affect the value of the italic angle but
|
|
* we need to pass them in to look up a strike.
|
|
* If we can pass in ones already being used it can prevent an extra
|
|
* strike from being allocated. Note that since italic angle is
|
|
* a property of the font, the font transform is needed not the
|
|
* device transform. Finally, this is private but the only caller of this
|
|
* in the JDK - and the only likely caller - is in this same class.
|
|
*/
|
|
private float getItalicAngle(FontRenderContext frc) {
|
|
Object aa, fm;
|
|
if (frc == null) {
|
|
aa = RenderingHints.VALUE_TEXT_ANTIALIAS_OFF;
|
|
fm = RenderingHints.VALUE_FRACTIONALMETRICS_OFF;
|
|
} else {
|
|
aa = frc.getAntiAliasingHint();
|
|
fm = frc.getFractionalMetricsHint();
|
|
}
|
|
return getFont2D().getItalicAngle(this, identityTx, aa, fm);
|
|
}
|
|
|
|
/**
|
|
* Checks whether or not this <code>Font</code> has uniform
|
|
* line metrics. A logical <code>Font</code> might be a
|
|
* composite font, which means that it is composed of different
|
|
* physical fonts to cover different code ranges. Each of these
|
|
* fonts might have different <code>LineMetrics</code>. If the
|
|
* logical <code>Font</code> is a single
|
|
* font then the metrics would be uniform.
|
|
* @return <code>true</code> if this <code>Font</code> has
|
|
* uniform line metrics; <code>false</code> otherwise.
|
|
*/
|
|
public boolean hasUniformLineMetrics() {
|
|
return false; // REMIND always safe, but prevents caller optimize
|
|
}
|
|
|
|
private transient SoftReference<FontLineMetrics> flmref;
|
|
private FontLineMetrics defaultLineMetrics(FontRenderContext frc) {
|
|
FontLineMetrics flm = null;
|
|
if (flmref == null
|
|
|| (flm = flmref.get()) == null
|
|
|| !flm.frc.equals(frc)) {
|
|
|
|
/* The device transform in the frc is not used in obtaining line
|
|
* metrics, although it probably should be: REMIND find why not?
|
|
* The font transform is used but its applied in getFontMetrics, so
|
|
* just pass identity here
|
|
*/
|
|
float [] metrics = new float[8];
|
|
getFont2D().getFontMetrics(this, identityTx,
|
|
frc.getAntiAliasingHint(),
|
|
frc.getFractionalMetricsHint(),
|
|
metrics);
|
|
float ascent = metrics[0];
|
|
float descent = metrics[1];
|
|
float leading = metrics[2];
|
|
float ssOffset = 0;
|
|
if (values != null && values.getSuperscript() != 0) {
|
|
ssOffset = (float)getTransform().getTranslateY();
|
|
ascent -= ssOffset;
|
|
descent += ssOffset;
|
|
}
|
|
float height = ascent + descent + leading;
|
|
|
|
int baselineIndex = 0; // need real index, assumes roman for everything
|
|
// need real baselines eventually
|
|
float[] baselineOffsets = { 0, (descent/2f - ascent) / 2f, -ascent };
|
|
|
|
float strikethroughOffset = metrics[4];
|
|
float strikethroughThickness = metrics[5];
|
|
|
|
float underlineOffset = metrics[6];
|
|
float underlineThickness = metrics[7];
|
|
|
|
float italicAngle = getItalicAngle(frc);
|
|
|
|
if (isTransformed()) {
|
|
AffineTransform ctx = values.getCharTransform(); // extract rotation
|
|
if (ctx != null) {
|
|
Point2D.Float pt = new Point2D.Float();
|
|
pt.setLocation(0, strikethroughOffset);
|
|
ctx.deltaTransform(pt, pt);
|
|
strikethroughOffset = pt.y;
|
|
pt.setLocation(0, strikethroughThickness);
|
|
ctx.deltaTransform(pt, pt);
|
|
strikethroughThickness = pt.y;
|
|
pt.setLocation(0, underlineOffset);
|
|
ctx.deltaTransform(pt, pt);
|
|
underlineOffset = pt.y;
|
|
pt.setLocation(0, underlineThickness);
|
|
ctx.deltaTransform(pt, pt);
|
|
underlineThickness = pt.y;
|
|
}
|
|
}
|
|
strikethroughOffset += ssOffset;
|
|
underlineOffset += ssOffset;
|
|
|
|
CoreMetrics cm = new CoreMetrics(ascent, descent, leading, height,
|
|
baselineIndex, baselineOffsets,
|
|
strikethroughOffset, strikethroughThickness,
|
|
underlineOffset, underlineThickness,
|
|
ssOffset, italicAngle);
|
|
|
|
flm = new FontLineMetrics(0, cm, frc);
|
|
flmref = new SoftReference<FontLineMetrics>(flm);
|
|
}
|
|
|
|
return (FontLineMetrics)flm.clone();
|
|
}
|
|
|
|
/**
|
|
* Returns a {@link LineMetrics} object created with the specified
|
|
* <code>String</code> and {@link FontRenderContext}.
|
|
* @param str the specified <code>String</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>LineMetrics</code> object created with the
|
|
* specified <code>String</code> and {@link FontRenderContext}.
|
|
*/
|
|
public LineMetrics getLineMetrics( String str, FontRenderContext frc) {
|
|
FontLineMetrics flm = defaultLineMetrics(frc);
|
|
flm.numchars = str.length();
|
|
return flm;
|
|
}
|
|
|
|
/**
|
|
* Returns a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
* @param str the specified <code>String</code>
|
|
* @param beginIndex the initial offset of <code>str</code>
|
|
* @param limit the end offset of <code>str</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
*/
|
|
public LineMetrics getLineMetrics( String str,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
FontLineMetrics flm = defaultLineMetrics(frc);
|
|
int numChars = limit - beginIndex;
|
|
flm.numchars = (numChars < 0)? 0: numChars;
|
|
return flm;
|
|
}
|
|
|
|
/**
|
|
* Returns a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
* @param chars an array of characters
|
|
* @param beginIndex the initial offset of <code>chars</code>
|
|
* @param limit the end offset of <code>chars</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
*/
|
|
public LineMetrics getLineMetrics(char [] chars,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
FontLineMetrics flm = defaultLineMetrics(frc);
|
|
int numChars = limit - beginIndex;
|
|
flm.numchars = (numChars < 0)? 0: numChars;
|
|
return flm;
|
|
}
|
|
|
|
/**
|
|
* Returns a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
* @param ci the specified <code>CharacterIterator</code>
|
|
* @param beginIndex the initial offset in <code>ci</code>
|
|
* @param limit the end offset of <code>ci</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>LineMetrics</code> object created with the
|
|
* specified arguments.
|
|
*/
|
|
public LineMetrics getLineMetrics(CharacterIterator ci,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
FontLineMetrics flm = defaultLineMetrics(frc);
|
|
int numChars = limit - beginIndex;
|
|
flm.numchars = (numChars < 0)? 0: numChars;
|
|
return flm;
|
|
}
|
|
|
|
/**
|
|
* Returns the logical bounds of the specified <code>String</code> in
|
|
* the specified <code>FontRenderContext</code>. The logical bounds
|
|
* contains the origin, ascent, advance, and height, which includes
|
|
* the leading. The logical bounds does not always enclose all the
|
|
* text. For example, in some languages and in some fonts, accent
|
|
* marks can be positioned above the ascent or below the descent.
|
|
* To obtain a visual bounding box, which encloses all the text,
|
|
* use the {@link TextLayout#getBounds() getBounds} method of
|
|
* <code>TextLayout</code>.
|
|
* <p>Note: The returned bounds is in baseline-relative coordinates
|
|
* (see {@link java.awt.Font class notes}).
|
|
* @param str the specified <code>String</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a {@link Rectangle2D} that is the bounding box of the
|
|
* specified <code>String</code> in the specified
|
|
* <code>FontRenderContext</code>.
|
|
* @see FontRenderContext
|
|
* @see Font#createGlyphVector
|
|
* @since 1.2
|
|
*/
|
|
public Rectangle2D getStringBounds( String str, FontRenderContext frc) {
|
|
char[] array = str.toCharArray();
|
|
return getStringBounds(array, 0, array.length, frc);
|
|
}
|
|
|
|
/**
|
|
* Returns the logical bounds of the specified <code>String</code> in
|
|
* the specified <code>FontRenderContext</code>. The logical bounds
|
|
* contains the origin, ascent, advance, and height, which includes
|
|
* the leading. The logical bounds does not always enclose all the
|
|
* text. For example, in some languages and in some fonts, accent
|
|
* marks can be positioned above the ascent or below the descent.
|
|
* To obtain a visual bounding box, which encloses all the text,
|
|
* use the {@link TextLayout#getBounds() getBounds} method of
|
|
* <code>TextLayout</code>.
|
|
* <p>Note: The returned bounds is in baseline-relative coordinates
|
|
* (see {@link java.awt.Font class notes}).
|
|
* @param str the specified <code>String</code>
|
|
* @param beginIndex the initial offset of <code>str</code>
|
|
* @param limit the end offset of <code>str</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>Rectangle2D</code> that is the bounding box of the
|
|
* specified <code>String</code> in the specified
|
|
* <code>FontRenderContext</code>.
|
|
* @throws IndexOutOfBoundsException if <code>beginIndex</code> is
|
|
* less than zero, or <code>limit</code> is greater than the
|
|
* length of <code>str</code>, or <code>beginIndex</code>
|
|
* is greater than <code>limit</code>.
|
|
* @see FontRenderContext
|
|
* @see Font#createGlyphVector
|
|
* @since 1.2
|
|
*/
|
|
public Rectangle2D getStringBounds( String str,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
String substr = str.substring(beginIndex, limit);
|
|
return getStringBounds(substr, frc);
|
|
}
|
|
|
|
/**
|
|
* Returns the logical bounds of the specified array of characters
|
|
* in the specified <code>FontRenderContext</code>. The logical
|
|
* bounds contains the origin, ascent, advance, and height, which
|
|
* includes the leading. The logical bounds does not always enclose
|
|
* all the text. For example, in some languages and in some fonts,
|
|
* accent marks can be positioned above the ascent or below the
|
|
* descent. To obtain a visual bounding box, which encloses all the
|
|
* text, use the {@link TextLayout#getBounds() getBounds} method of
|
|
* <code>TextLayout</code>.
|
|
* <p>Note: The returned bounds is in baseline-relative coordinates
|
|
* (see {@link java.awt.Font class notes}).
|
|
* @param chars an array of characters
|
|
* @param beginIndex the initial offset in the array of
|
|
* characters
|
|
* @param limit the end offset in the array of characters
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>Rectangle2D</code> that is the bounding box of the
|
|
* specified array of characters in the specified
|
|
* <code>FontRenderContext</code>.
|
|
* @throws IndexOutOfBoundsException if <code>beginIndex</code> is
|
|
* less than zero, or <code>limit</code> is greater than the
|
|
* length of <code>chars</code>, or <code>beginIndex</code>
|
|
* is greater than <code>limit</code>.
|
|
* @see FontRenderContext
|
|
* @see Font#createGlyphVector
|
|
* @since 1.2
|
|
*/
|
|
public Rectangle2D getStringBounds(char [] chars,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
if (beginIndex < 0) {
|
|
throw new IndexOutOfBoundsException("beginIndex: " + beginIndex);
|
|
}
|
|
if (limit > chars.length) {
|
|
throw new IndexOutOfBoundsException("limit: " + limit);
|
|
}
|
|
if (beginIndex > limit) {
|
|
throw new IndexOutOfBoundsException("range length: " +
|
|
(limit - beginIndex));
|
|
}
|
|
|
|
// this code should be in textlayout
|
|
// quick check for simple text, assume GV ok to use if simple
|
|
|
|
boolean simple = values == null ||
|
|
(values.getKerning() == 0 && values.getLigatures() == 0 &&
|
|
values.getBaselineTransform() == null);
|
|
if (simple) {
|
|
simple = ! FontUtilities.isComplexText(chars, beginIndex, limit);
|
|
}
|
|
|
|
if (simple) {
|
|
GlyphVector gv = new StandardGlyphVector(this, chars, beginIndex,
|
|
limit - beginIndex, frc);
|
|
return gv.getLogicalBounds();
|
|
} else {
|
|
// need char array constructor on textlayout
|
|
String str = new String(chars, beginIndex, limit - beginIndex);
|
|
TextLayout tl = new TextLayout(str, this, frc);
|
|
return new Rectangle2D.Float(0, -tl.getAscent(), tl.getAdvance(),
|
|
tl.getAscent() + tl.getDescent() +
|
|
tl.getLeading());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the logical bounds of the characters indexed in the
|
|
* specified {@link CharacterIterator} in the
|
|
* specified <code>FontRenderContext</code>. The logical bounds
|
|
* contains the origin, ascent, advance, and height, which includes
|
|
* the leading. The logical bounds does not always enclose all the
|
|
* text. For example, in some languages and in some fonts, accent
|
|
* marks can be positioned above the ascent or below the descent.
|
|
* To obtain a visual bounding box, which encloses all the text,
|
|
* use the {@link TextLayout#getBounds() getBounds} method of
|
|
* <code>TextLayout</code>.
|
|
* <p>Note: The returned bounds is in baseline-relative coordinates
|
|
* (see {@link java.awt.Font class notes}).
|
|
* @param ci the specified <code>CharacterIterator</code>
|
|
* @param beginIndex the initial offset in <code>ci</code>
|
|
* @param limit the end offset in <code>ci</code>
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>Rectangle2D</code> that is the bounding box of the
|
|
* characters indexed in the specified <code>CharacterIterator</code>
|
|
* in the specified <code>FontRenderContext</code>.
|
|
* @see FontRenderContext
|
|
* @see Font#createGlyphVector
|
|
* @since 1.2
|
|
* @throws IndexOutOfBoundsException if <code>beginIndex</code> is
|
|
* less than the start index of <code>ci</code>, or
|
|
* <code>limit</code> is greater than the end index of
|
|
* <code>ci</code>, or <code>beginIndex</code> is greater
|
|
* than <code>limit</code>
|
|
*/
|
|
public Rectangle2D getStringBounds(CharacterIterator ci,
|
|
int beginIndex, int limit,
|
|
FontRenderContext frc) {
|
|
int start = ci.getBeginIndex();
|
|
int end = ci.getEndIndex();
|
|
|
|
if (beginIndex < start) {
|
|
throw new IndexOutOfBoundsException("beginIndex: " + beginIndex);
|
|
}
|
|
if (limit > end) {
|
|
throw new IndexOutOfBoundsException("limit: " + limit);
|
|
}
|
|
if (beginIndex > limit) {
|
|
throw new IndexOutOfBoundsException("range length: " +
|
|
(limit - beginIndex));
|
|
}
|
|
|
|
char[] arr = new char[limit - beginIndex];
|
|
|
|
ci.setIndex(beginIndex);
|
|
for(int idx = 0; idx < arr.length; idx++) {
|
|
arr[idx] = ci.current();
|
|
ci.next();
|
|
}
|
|
|
|
return getStringBounds(arr,0,arr.length,frc);
|
|
}
|
|
|
|
/**
|
|
* Returns the bounds for the character with the maximum
|
|
* bounds as defined in the specified <code>FontRenderContext</code>.
|
|
* <p>Note: The returned bounds is in baseline-relative coordinates
|
|
* (see {@link java.awt.Font class notes}).
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @return a <code>Rectangle2D</code> that is the bounding box
|
|
* for the character with the maximum bounds.
|
|
*/
|
|
public Rectangle2D getMaxCharBounds(FontRenderContext frc) {
|
|
float [] metrics = new float[4];
|
|
|
|
getFont2D().getFontMetrics(this, frc, metrics);
|
|
|
|
return new Rectangle2D.Float(0, -metrics[0],
|
|
metrics[3],
|
|
metrics[0] + metrics[1] + metrics[2]);
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link java.awt.font.GlyphVector GlyphVector} by
|
|
* mapping characters to glyphs one-to-one based on the
|
|
* Unicode cmap in this <code>Font</code>. This method does no other
|
|
* processing besides the mapping of glyphs to characters. This
|
|
* means that this method is not useful for some scripts, such
|
|
* as Arabic, Hebrew, Thai, and Indic, that require reordering,
|
|
* shaping, or ligature substitution.
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @param str the specified <code>String</code>
|
|
* @return a new <code>GlyphVector</code> created with the
|
|
* specified <code>String</code> and the specified
|
|
* <code>FontRenderContext</code>.
|
|
*/
|
|
public GlyphVector createGlyphVector(FontRenderContext frc, String str)
|
|
{
|
|
return (GlyphVector)new StandardGlyphVector(this, str, frc);
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link java.awt.font.GlyphVector GlyphVector} by
|
|
* mapping characters to glyphs one-to-one based on the
|
|
* Unicode cmap in this <code>Font</code>. This method does no other
|
|
* processing besides the mapping of glyphs to characters. This
|
|
* means that this method is not useful for some scripts, such
|
|
* as Arabic, Hebrew, Thai, and Indic, that require reordering,
|
|
* shaping, or ligature substitution.
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @param chars the specified array of characters
|
|
* @return a new <code>GlyphVector</code> created with the
|
|
* specified array of characters and the specified
|
|
* <code>FontRenderContext</code>.
|
|
*/
|
|
public GlyphVector createGlyphVector(FontRenderContext frc, char[] chars)
|
|
{
|
|
return (GlyphVector)new StandardGlyphVector(this, chars, frc);
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link java.awt.font.GlyphVector GlyphVector} by
|
|
* mapping the specified characters to glyphs one-to-one based on the
|
|
* Unicode cmap in this <code>Font</code>. This method does no other
|
|
* processing besides the mapping of glyphs to characters. This
|
|
* means that this method is not useful for some scripts, such
|
|
* as Arabic, Hebrew, Thai, and Indic, that require reordering,
|
|
* shaping, or ligature substitution.
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @param ci the specified <code>CharacterIterator</code>
|
|
* @return a new <code>GlyphVector</code> created with the
|
|
* specified <code>CharacterIterator</code> and the specified
|
|
* <code>FontRenderContext</code>.
|
|
*/
|
|
public GlyphVector createGlyphVector( FontRenderContext frc,
|
|
CharacterIterator ci)
|
|
{
|
|
return (GlyphVector)new StandardGlyphVector(this, ci, frc);
|
|
}
|
|
|
|
/**
|
|
* Creates a {@link java.awt.font.GlyphVector GlyphVector} by
|
|
* mapping characters to glyphs one-to-one based on the
|
|
* Unicode cmap in this <code>Font</code>. This method does no other
|
|
* processing besides the mapping of glyphs to characters. This
|
|
* means that this method is not useful for some scripts, such
|
|
* as Arabic, Hebrew, Thai, and Indic, that require reordering,
|
|
* shaping, or ligature substitution.
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @param glyphCodes the specified integer array
|
|
* @return a new <code>GlyphVector</code> created with the
|
|
* specified integer array and the specified
|
|
* <code>FontRenderContext</code>.
|
|
*/
|
|
public GlyphVector createGlyphVector( FontRenderContext frc,
|
|
int [] glyphCodes)
|
|
{
|
|
return (GlyphVector)new StandardGlyphVector(this, glyphCodes, frc);
|
|
}
|
|
|
|
/**
|
|
* Returns a new <code>GlyphVector</code> object, performing full
|
|
* layout of the text if possible. Full layout is required for
|
|
* complex text, such as Arabic or Hindi. Support for different
|
|
* scripts depends on the font and implementation.
|
|
* <p>
|
|
* Layout requires bidi analysis, as performed by
|
|
* <code>Bidi</code>, and should only be performed on text that
|
|
* has a uniform direction. The direction is indicated in the
|
|
* flags parameter,by using LAYOUT_RIGHT_TO_LEFT to indicate a
|
|
* right-to-left (Arabic and Hebrew) run direction, or
|
|
* LAYOUT_LEFT_TO_RIGHT to indicate a left-to-right (English)
|
|
* run direction.
|
|
* <p>
|
|
* In addition, some operations, such as Arabic shaping, require
|
|
* context, so that the characters at the start and limit can have
|
|
* the proper shapes. Sometimes the data in the buffer outside
|
|
* the provided range does not have valid data. The values
|
|
* LAYOUT_NO_START_CONTEXT and LAYOUT_NO_LIMIT_CONTEXT can be
|
|
* added to the flags parameter to indicate that the text before
|
|
* start, or after limit, respectively, should not be examined
|
|
* for context.
|
|
* <p>
|
|
* All other values for the flags parameter are reserved.
|
|
*
|
|
* @param frc the specified <code>FontRenderContext</code>
|
|
* @param text the text to layout
|
|
* @param start the start of the text to use for the <code>GlyphVector</code>
|
|
* @param limit the limit of the text to use for the <code>GlyphVector</code>
|
|
* @param flags control flags as described above
|
|
* @return a new <code>GlyphVector</code> representing the text between
|
|
* start and limit, with glyphs chosen and positioned so as to best represent
|
|
* the text
|
|
* @throws ArrayIndexOutOfBoundsException if start or limit is
|
|
* out of bounds
|
|
* @see java.text.Bidi
|
|
* @see #LAYOUT_LEFT_TO_RIGHT
|
|
* @see #LAYOUT_RIGHT_TO_LEFT
|
|
* @see #LAYOUT_NO_START_CONTEXT
|
|
* @see #LAYOUT_NO_LIMIT_CONTEXT
|
|
* @since 1.4
|
|
*/
|
|
public GlyphVector layoutGlyphVector(FontRenderContext frc,
|
|
char[] text,
|
|
int start,
|
|
int limit,
|
|
int flags) {
|
|
|
|
GlyphLayout gl = GlyphLayout.get(null); // !!! no custom layout engines
|
|
StandardGlyphVector gv = gl.layout(this, frc, text,
|
|
start, limit-start, flags, null);
|
|
GlyphLayout.done(gl);
|
|
return gv;
|
|
}
|
|
|
|
/**
|
|
* A flag to layoutGlyphVector indicating that text is left-to-right as
|
|
* determined by Bidi analysis.
|
|
*/
|
|
public static final int LAYOUT_LEFT_TO_RIGHT = 0;
|
|
|
|
/**
|
|
* A flag to layoutGlyphVector indicating that text is right-to-left as
|
|
* determined by Bidi analysis.
|
|
*/
|
|
public static final int LAYOUT_RIGHT_TO_LEFT = 1;
|
|
|
|
/**
|
|
* A flag to layoutGlyphVector indicating that text in the char array
|
|
* before the indicated start should not be examined.
|
|
*/
|
|
public static final int LAYOUT_NO_START_CONTEXT = 2;
|
|
|
|
/**
|
|
* A flag to layoutGlyphVector indicating that text in the char array
|
|
* after the indicated limit should not be examined.
|
|
*/
|
|
public static final int LAYOUT_NO_LIMIT_CONTEXT = 4;
|
|
|
|
|
|
private static void applyTransform(AffineTransform trans, AttributeValues values) {
|
|
if (trans == null) {
|
|
throw new IllegalArgumentException("transform must not be null");
|
|
}
|
|
values.setTransform(trans);
|
|
}
|
|
|
|
private static void applyStyle(int style, AttributeValues values) {
|
|
// WEIGHT_BOLD, WEIGHT_REGULAR
|
|
values.setWeight((style & BOLD) != 0 ? 2f : 1f);
|
|
// POSTURE_OBLIQUE, POSTURE_REGULAR
|
|
values.setPosture((style & ITALIC) != 0 ? .2f : 0f);
|
|
}
|
|
|
|
/*
|
|
* Initialize JNI field and method IDs
|
|
*/
|
|
private static native void initIDs();
|
|
}
|