GdkClasspathFontPeerMetrics.java: New file.

2003-11-17  Graydon Hoare  <graydon@redhat.com>

	* gnu/java/awt/peer/gtk/GdkClasspathFontPeerMetrics.java: New file.
	* gnu/java/awt/peer/gtk/GdkClasspathFontPeer.java
	(GdkFontLineMetrics): New inner class.
	(getLineMetrics): Return new GdkFontLineMetrics.
	(getFontMetrics): Return new GdkClasspathFontPeerMetrics.
	(layoutGlyphVector): Create GdkGlyphVector.
	* gnu/java/awt/peer/gtk/GdkGraphics2D.java (stateStack): New member.
	(GdkGraphics2D): Initialize state via mathod calls.
	(cairoSetMatrix, cairoShowGlyphs): Simplify native calls.
	(cairoTranslate, cairoScale, cairoRotate): Remove.
	(various methods): use setTransform for special transform cases.
	(DrawState): New inner class.
	(stateSave): New method.
	(stateRestore): New method.
	(various methods): use stateSave, stateRestore.
	(getClipInDevSpace): New method.
	(clip, clipRect, setClip, getClip, getClipBounds):
	Follow spec more closely.
	(getTransform): Return clone of transform.
	(setStroke): Set linewidth to passed width / 2.0.
	(setPaintMode): Set SrcOver rather than Xor.
	(setColor): Set paint to passed color.
	(drawRaster, drawImage, PainterThread, drawPixels): Take affine
	transform from image to user space.
	(drawRenderedImage, drawRenderableImage): Implement.
	(getFontRenderContext, getFontMetrics, drawString, getFont):
	Implement
	(drawArc, drawOval, drawRoundRect, fillArc, fillOval, fillRoundRect):
	Implement.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkGraphics2D.c:
	Match changes to java side.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkClasspathFontPeer.c:
	Release resources.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkGlyphVector.c:
	Don't use pango for metrics.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkClasspathFontPeerMetrics.c:
	New file.

From-SVN: r73776

libjava/gnu/java/awt/peer/gtk/GdkClasspathFontPeerMetrics.java

@@ -0,0 +1,116 @@
+/* GdkClasspathFontPeerMetrics.java
+   Copyright (C) 1999, 2002 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 java.awt.*;
+import java.awt.font.*;
+import java.awt.geom.*;
+
+public class GdkClasspathFontPeerMetrics extends FontMetrics
+{
+  private final int native_state = GtkGenericPeer.getUniqueInteger();
+
+  private static final int ASCENT = 0, MAX_ASCENT = 1, 
+                       DESCENT = 2, MAX_DESCENT = 3, 
+                       MAX_ADVANCE = 4;
+
+  private int[] metrics;
+  private native int[] initState (Object font);
+
+  public GdkClasspathFontPeerMetrics (Font font)
+  {
+    super (font);
+    metrics = initState (font.getPeer());
+  }
+
+  public int stringWidth (String str)
+  {
+    GlyphVector gv = font.createGlyphVector 
+      (new FontRenderContext 
+       (new AffineTransform (), false, false), str);
+    Rectangle2D r = gv.getVisualBounds ();
+    return (int) r.getWidth ();
+  }
+
+  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];
+  }
+}