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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [gnu/] [gcj/] [xlib/] [Font.java] - Rev 756

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/* Copyright (C) 2000  Free Software Foundation
 
   This file is part of libgcj.
 
This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */
 
package gnu.gcj.xlib;
 
import gnu.gcj.RawData;
 
/**
 * An X11 Font, implemented as a wrapper around an X11 Font XID and
 * the associated Xlib XFontStruct structure.
 *
 * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
 */
public final class Font extends XID
{
 
  /**
   * @param lfdNamePattern a font name pattern following the
   * <em>X Logical Font Description Conventions</em>.
   */
  public Font(Display display, String lfdNamePattern)
  {
    this(display, loadFont(display, lfdNamePattern));
  }
 
  Font(Display display, RawData struct)
  {
    super(display, getXIDFromStruct(struct));
    structure = struct;
  }
 
  static RawData loadFont(Display display, String lfdNamePattern)
  {
    RawData returnValue = null;
    try
    {
      returnValue = loadFontImpl (display,lfdNamePattern);
    }
    catch (XException e)
    {
      // Throw a descriptive exception, including the font pattern
      throw new XException ("Font not found: " + lfdNamePattern);
    }
    return returnValue;
  }
  static native RawData loadFontImpl(Display display, String lfdNamePattern);
 
  static native int getXIDFromStruct(RawData structure);
 
  public native int getAscent();
  public native int getDescent();
  public native int getMaxAscent();
  public native int getMaxDescent();
 
  public native int getStringWidth(String str);
 
  protected native void finalize();
 
  RawData structure;
}
 

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