/**
* ===========================================
* LibFonts : a free Java font reading library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/libfonts/
*
* (C) Copyright 2006-2008, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* MonospaceFontMetrics.java
* ------------
*/
package org.pentaho.reporting.libraries.fonts.monospace;
import org.pentaho.reporting.libraries.fonts.LibFontsDefaults;
import org.pentaho.reporting.libraries.fonts.registry.BaselineInfo;
import org.pentaho.reporting.libraries.fonts.registry.FontMetrics;
/**
* Creation-Date: 13.05.2007, 13:14:25
*
* @author Thomas Morgner
*/
public class MonospaceFontMetrics implements FontMetrics
{
private static final long MICRO_DOTS_PER_INCH = 72000;
private long charHeight;
private long charWidth;
public MonospaceFontMetrics(final float cpi, final float lpi)
{
charHeight = (long)(MICRO_DOTS_PER_INCH / lpi);
charWidth = (long)(MICRO_DOTS_PER_INCH / cpi);
}
/**
* Is it guaranteed that the font always returns the same baseline info objct?
*
* @return true, if the baseline info in question is always the same, false otherwise.
*/
public boolean isUniformFontMetrics()
{
return true;
}
/**
* From the baseline to the
*
* @return
*/
public long getAscent()
{
return (long) (LibFontsDefaults.DEFAULT_ASCENT_SIZE * charHeight);
}
public long getDescent()
{
return (long) (LibFontsDefaults.DEFAULT_DESCENT_SIZE * charHeight);
}
public long getLeading()
{
return 0;
}
/**
* The height of the lowercase 'x'. This is used as hint, which size the lowercase characters will have.
*
* @return
*/
public long getXHeight()
{
return (long) (LibFontsDefaults.DEFAULT_XHEIGHT_SIZE * charHeight);
}
public long getOverlinePosition()
{
return getLeading() - Math.max (1000, charHeight / 20);
}
public long getUnderlinePosition()
{
return getAscent() + Math.max (1000, charHeight / 20);
}
public long getStrikeThroughPosition()
{
return (long) (LibFontsDefaults.DEFAULT_STRIKETHROUGH_POSITION * getXHeight());
}
public long getMaxAscent()
{
return getAscent();
}
public long getMaxDescent()
{
return getDescent();
}
public long getMaxHeight()
{
return charHeight;
}
public long getMaxCharAdvance()
{
return charWidth;
}
public long getCharWidth(final int codePoint)
{
return charWidth;
}
public long getKerning(final int previous, final int codePoint)
{
return 0;
}
public long getItalicAngle()
{
return 0;
}
/**
* Baselines are defined for scripts, not glyphs. A glyph carries script information most of the time (unless it is a
* neutral characters or just weird).
*
* @param codePoint
* @return
*/
public BaselineInfo getBaselines(final int codePoint, BaselineInfo info)
{
if (info == null)
{
info = new BaselineInfo();
}
info.setBaseline(BaselineInfo.HANGING, 0);
info.setBaseline(BaselineInfo.MATHEMATICAL, charHeight / 2);
info.setBaseline(BaselineInfo.CENTRAL, charHeight / 2);
info.setBaseline(BaselineInfo.MIDDLE, charHeight / 2);
info.setBaseline(BaselineInfo.ALPHABETIC, getMaxAscent());
info.setBaseline(BaselineInfo.IDEOGRAPHIC, getMaxHeight());
return info;
}
}