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Diffstat (limited to 'libjava/classpath/java/awt/font/GraphicAttribute.java')
-rw-r--r-- | libjava/classpath/java/awt/font/GraphicAttribute.java | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/font/GraphicAttribute.java b/libjava/classpath/java/awt/font/GraphicAttribute.java new file mode 100644 index 000000000..edf0c204d --- /dev/null +++ b/libjava/classpath/java/awt/font/GraphicAttribute.java @@ -0,0 +1,137 @@ +/* GraphicAttribute.java + Copyright (C) 2003 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.font; + +import java.awt.Graphics2D; +import java.awt.geom.Rectangle2D; + +/** + * This class represents a graphic embedded in text. + * + * @author Michael Koch + * @author Lillian Angel (langel at redhat dot com) + */ +public abstract class GraphicAttribute +{ + public static final int BOTTOM_ALIGNMENT = - 2; + public static final int CENTER_BASELINE = 1; + public static final int HANGING_BASELINE = 2; + public static final int ROMAN_BASELINE = 0; + public static final int TOP_ALIGNMENT = - 1; + + private int alignment; + + /** + * Constructor. + * + * @param alignment - the alignment to use for the graphic + */ + protected GraphicAttribute(int alignment) + { + if (alignment < BOTTOM_ALIGNMENT || alignment > HANGING_BASELINE) + throw new IllegalArgumentException("Invalid alignment"); + this.alignment = alignment; + } + + /** + * Draws the graphic. + * + * @param graphics - the graphics configuration to use + * @param x - the x location + * @param y - the y location + */ + public abstract void draw(Graphics2D graphics, float x, float y); + + /** + * Gets the distance from the origin of its graphic to the right side of the + * bounds of its graphic. + * + * @return the advance + */ + public abstract float getAdvance(); + + /** + * Gets the positive distance from the origin of its graphic to the top of + * bounds. + * + * @return the ascent + */ + public abstract float getAscent(); + + /** + * Gets the distance from the origin of its graphic to the bottom of the bounds. + * + * @return the descent + */ + public abstract float getDescent(); + + /** + * Gets the alignment. + * + * @return the alignment + */ + public final int getAlignment() + { + return alignment; + } + + /** + * Returns a Rectangle2D that encloses the rendered area. + * Default bounds is the rectangle (0, -ascent, advance, ascent+descent). + * + * @return the bounds of the rendered area + */ + public Rectangle2D getBounds() + { + float asc = getAscent(); + return new Rectangle2D.Float(0, - asc, getAdvance(), asc + getDescent()); + } + + /** + * Returns the justification information for this object. + * + * @return the justification information + */ + public GlyphJustificationInfo getJustificationInfo() + { + float adv = getAdvance(); + return new GlyphJustificationInfo(adv, false, 2, adv / 3, adv / 3, false, + 1, 0, 0); + } +} |