Subversion Repositories openrisc

/* 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;

}