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