configure.in: Add --enable-gtk-cairo check.

2003-12-16  Graydon Hoare  <graydon@redhat.com>

	* configure.in: Add --enable-gtk-cairo check.
	* configure: Regenerate.
	* Makefile.am: Conditionally link against cairo.
	* Makefile.in: Regenerate.
	* acinclude.m4: Include PKG_CHECK_MODULES.
	* aclocal.m4: Regenerate.
	* gnu/java/awt/peer/gtk/GtkToolkit.java (useGraphics2D): New method.
	(getFontMetrics, getClasspathFontPeer):
	* gnu/java/awt/peer/gtk/GtkCanvasPeer.java (getGraphics):
	* gnu/java/awt/peer/gtk/GtkComponentPeer.java (createImage):
	* gnu/java/awt/peer/gtk/GtkContainerPeer.java (getGraphics):
	* gnu/java/awt/peer/gtk/GtkFramePeer.java (getGraphics):
	Switch behavior depending on GtkToolkit.useGraphics2D().
	* gnu/java/awt/peer/gtk/GtkFontPeer.java: Extend ClasspathFontPeer.
	* java/awt/Font.java: Switch to peer model.
	* jni/gtk-peer/gtkcairopeer.h: Definitions of cairo stuff.
	* jni/gtk-peer/gdkfont.h: Include gtkcairopeer.h.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkGraphics2D.c: Include gtkcairopeer.h.
	* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkClasspathFontPeerMetrics.c: Un-include gtkpeer.h.

From-SVN: r75260

libjava/jni/gtk-peer/gdkfont.h

@@ -38,7 +38,7 @@
    obligated to do so.  If you do not wish to do so, delete this
    exception statement from your version. */
 
-#include "gtkpeer.h"
+#include "gtkcairopeer.h"
 
 #include <pango/pango.h>
 #include <pango/pango-context.h>

libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GdkClasspathFontPeerMetrics.c

@@ -37,7 +37,6 @@
 
 #include <math.h>
 
-#include "gtkpeer.h"
 #include "gdkfont.h"
 #include "gnu_java_awt_peer_gtk_GdkClasspathFontPeerMetrics.h"
 

libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GdkGraphics2D.c

@@ -35,7 +35,7 @@
    obligated to do so.  If you do not wish to do so, delete this
    exception statement from your version. */
 
-#include "gtkpeer.h"
+#include "gtkcairopeer.h"
 #include "gdkfont.h"
 #include "gnu_java_awt_peer_gtk_GdkGraphics2D.h"
 #include <gdk/gdktypes.h>

libjava/jni/gtk-peer/gtkcairopeer.h

@@ -0,0 +1,78 @@
+#ifndef __GTKCAIROPEER_H__
+#define __GTKCAIROPEER_H__
+
+/* gtkcairopeer.h -- Some global variables and #defines
+   Copyright (C) 1998, 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.
+
+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. */
+
+#include "gtkpeer.h"
+#include <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+/* 
+   A graphics2d struct is both simpler and uglier than a graphics
+   struct. 
+
+   Most of the graphics2d drawing state is held in the referenced cairo_t
+   and corresponding cairo_surface_t, so we can ignore it.
+
+   In addition to the cairo_t, we need to hold an extra reference to the
+   underlying GdkDrawable so its refcount matches the lifecycle of the java
+   Graphics object which is peering with us; also a reference to a byte
+   buffer and cairo_surface_t which contain the pattern you're drawing from
+   (if it exists).
+
+   Finally, it is possible that we are using a non-RENDER capable X server,
+   therefore we will be drawing to an cairo_surface_t which is actually a
+   pixbuf. When this is the case, the pointer to a GdkPixbuf will be
+   non-NULL and any drawing operation needs to be bracketed by pixbuf
+   load/save operations. If the GdkPixbuf pointer is NULL, we will treat
+   the cairo_surface_t as RENDER-capable.
+ */
+
+struct graphics2d
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  GdkDrawable *drawable;
+  GdkWindow *win;
+  GdkPixbuf *drawbuf;
+  char *pattern_pixels;
+  cairo_surface_t *pattern;
+  gboolean debug;
+};
+
+#endif /* __GTKCAIROPEER_H */