| /* GdkFontMetrics.java |
| Copyright (C) 1999, 2002, 2004 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. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.awt.peer.gtk; |
| |
| import gnu.java.awt.ClasspathToolkit; |
| |
| import java.awt.Font; |
| import java.awt.FontMetrics; |
| import java.awt.Toolkit; |
| |
| public class GdkFontMetrics extends FontMetrics |
| { |
| |
| private int[] font_metrics; |
| GdkFontPeer peer; |
| |
| static final int FONT_METRICS_ASCENT = 0; |
| static final int FONT_METRICS_MAX_ASCENT = 1; |
| static final int FONT_METRICS_DESCENT = 2; |
| static final int FONT_METRICS_MAX_DESCENT = 3; |
| static final int FONT_METRICS_MAX_ADVANCE = 4; |
| |
| static final int TEXT_METRICS_X_BEARING = 0; |
| static final int TEXT_METRICS_Y_BEARING = 1; |
| static final int TEXT_METRICS_WIDTH = 2; |
| static final int TEXT_METRICS_HEIGHT = 3; |
| static final int TEXT_METRICS_X_ADVANCE = 4; |
| static final int TEXT_METRICS_Y_ADVANCE = 5; |
| |
| |
| public GdkFontMetrics (Font font) |
| { |
| super (font.getPeer() instanceof GdkFontPeer |
| ? font |
| : ((ClasspathToolkit)(Toolkit.getDefaultToolkit ())) |
| .getFont (font.getName(), font.getAttributes ())); |
| |
| peer = (GdkFontPeer) this.font.getPeer(); |
| |
| font_metrics = new int[5]; |
| double [] hires = new double[5]; |
| peer.getFontMetrics (hires); |
| for (int i = 0; i < 5; ++i) |
| font_metrics[i] = (int) hires[i]; |
| } |
| |
| public int stringWidth (String str) |
| { |
| double [] hires = new double[6]; |
| peer.getTextMetrics(str, hires); |
| return (int) hires [TEXT_METRICS_WIDTH]; |
| } |
| |
| 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; |
| } |
| |
| public int getAscent () |
| { |
| return font_metrics[FONT_METRICS_ASCENT]; |
| } |
| |
| public int getMaxAscent () |
| { |
| return font_metrics[FONT_METRICS_MAX_ASCENT]; |
| } |
| |
| public int getDescent () |
| { |
| return font_metrics[FONT_METRICS_DESCENT]; |
| } |
| |
| public int getMaxDescent () |
| { |
| return font_metrics[FONT_METRICS_MAX_DESCENT]; |
| } |
| |
| public int getMaxAdvance () |
| { |
| return font_metrics[FONT_METRICS_MAX_ADVANCE]; |
| } |
| } |