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/* GdkFontMetrics.java
Copyright (C) 1999 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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
package gnu.java.awt.peer.gtk;
import java.awt.*;
public class GdkFontMetrics extends FontMetrics
{
private final int native_state = java.lang.System.identityHashCode (this);
private static final int ASCENT = 0, MAX_ASCENT = 1,
DESCENT = 2, MAX_DESCENT = 3,
MAX_ADVANCE = 4;
private int[] metrics;
private native int[] initState (String xlfd, int pts);
public GdkFontMetrics (Font font)
{
super (font);
metrics = initState (((GtkFontPeer)font.getPeer ()).getXLFD (),
font.getSize ());
}
native public int stringWidth (String str);
public int charWidth (char ch)
{
return stringWidth (new String (new char[] { ch }));
}
public int charsWidth (char data[], int off, int len)
{
return stringWidth (new String (data, off, len));
}
/*
Sun's Motif implementation always returns 0 or 1 here (???), but
going by the X11 man pages, it seems as though we should return
font.ascent + font.descent.
*/
public int getLeading ()
{
return 1;
// return metrics[ASCENT] + metrics[DESCENT];
}
public int getAscent ()
{
return metrics[ASCENT];
}
public int getMaxAscent ()
{
return metrics[MAX_ASCENT];
}
public int getDescent ()
{
return metrics[DESCENT];
}
public int getMaxDescent ()
{
return metrics[MAX_DESCENT];
}
public int getMaxAdvance ()
{
return metrics[MAX_ADVANCE];
}
}
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