Creation of sphinx.

16 files changed, 2229 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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index 0000000..7cbaee9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,30 @@
+ChangeLog*
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+compile
+config.cache
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+mkinstalldirs
+missing
+releases
+stamp-h
+stamp-h1
+stamp-h.in
+sphinx.desktop
+sphinx.desktop.in
+*~
+.*.sw?
+*.la
+*.lo
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program 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 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..a582550
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,15 @@
+SUBDIRS = src
+
+EXTRA_DIST = COPYING
+
+desktopdir = $(datadir)/applications
+desktop_in_files = sphinx.desktop.in
+desktop_DATA = $(desktop_in_files:.desktop.in=.desktop)
+@INTLTOOL_DESKTOP_RULE@
+
+ChangeLog:
+	git log --stat > $@
+
+dist: ChangeLog
+
+.PHONY: ChangeLog
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..7ad900c
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+# Run this to generate all the initial makefiles, etc.
+
+srcdir=`dirname $0`
+test -z "$srcdir" && srcdir=.
+
+REQUIRED_AUTOMAKE_VERSION=1.9
+REQUIRED_INTLTOOL_VERSION=0.37.0
+
+PKG_NAME="sphinx"
+
+which gnome-autogen.sh || {
+    echo "You need to install gnome-common from the GNOME SVN"
+    exit 1
+}
+#USE_COMMON_DOC_BUILD=yes . gnome-autogen.sh
+. gnome-autogen.sh
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000..f4165ff
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,120 @@
+AC_PREREQ(2.58)
+
+AC_INIT(sphinx, 0.1, [/dev/null])
+AM_INIT_AUTOMAKE([1.9 foreign no-dist-gzip dist-bzip2])
+
+GETTEXT_PACKAGE=sphinx
+AC_SUBST([GETTEXT_PACKAGE])
+AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],["$GETTEXT_PACKAGE"],[Gettext package])
+
+AC_CONFIG_SRCDIR(src/sphinx.h)
+AC_CONFIG_HEADER(config.h)
+
+AC_GNU_SOURCE
+
+PKG_PROG_PKG_CONFIG
+AC_PROG_CC
+AC_PROG_LIBTOOL
+IT_PROG_INTLTOOL([0.37.0])
+AM_GLIB_GNU_GETTEXT
+
+
+GTK_VERSION=2.14.0
+GCONF_VERSION=2.14.0
+PKG_CHECK_MODULES(DBG,
+		  gconf-2.0 >= $GCONF_VERSION
+		  gtk+-2.0 >= $GTK_VERSION
+		  gtksourceview-2.0)
+AC_SUBST(DBG_CFLAGS)
+AC_SUBST(DBG_LIBS)
+
+AC_PATH_PROG(GCONFTOOL, gconftool-2, no)
+
+if test x"$GCONFTOOL" = xno; then
+  AC_MSG_ERROR([gconftool-2 executable not found in your path - should be installed with GConf])
+fi
+
+AM_GCONF_SOURCE_2
+
+GLIB_GENMARSHAL="$($PKG_CONFIG --variable=glib_genmarshal glib-2.0)"
+AC_SUBST([GLIB_GENMARSHAL])
+GLIB_MKENUMS="$($PKG_CONFIG --variable=glib_mkenums glib-2.0)"
+AC_SUBST([GLIB_MKENUMS])
+
+dnl ===========================================================================
+dnl check compiler flags
+AC_DEFUN([SPHINX_CC_TRY_FLAG], [
+  AC_MSG_CHECKING([whether $CC supports $1])
+
+  sphinx_save_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS $1"
+
+  AC_COMPILE_IFELSE([ ], [sphinx_cc_flag=yes], [sphinx_cc_flag=no])
+  CFLAGS="$sphinx_save_CFLAGS"
+
+  if test "x$sphinx_cc_flag" = "xyes"; then
+    ifelse([$2], , :, [$2])
+  else
+    ifelse([$3], , :, [$3])
+  fi
+  AC_MSG_RESULT([$sphinx_cc_flag])
+])
+
+
+dnl Use lots of warning flags with with gcc and compatible compilers
+
+dnl Note: if you change the following variable, the cache is automatically
+dnl skipped and all flags rechecked.  So there's no need to do anything
+dnl else.  If for any reason you need to force a recheck, just change
+dnl MAYBE_WARN in an ignorable way (like adding whitespace)
+
+MAYBE_WARN="-Wall -Wextra \
+-Wsign-compare -Werror-implicit-function-declaration \
+-Wpointer-arith -Wwrite-strings -Wstrict-prototypes \
+-Wmissing-prototypes -Wmissing-declarations -Wnested-externs \
+-Wpacked -Wswitch-enum -Wmissing-format-attribute \
+-Wstrict-aliasing=2 -Winit-self -Wunsafe-loop-optimizations \
+-Wdeclaration-after-statement -Wold-style-definition \
+-Wno-missing-field-initializers -Wno-unused-parameter \
+-Wno-attributes -Wno-long-long -Winline"
+
+
+# invalidate cached value if MAYBE_WARN has changed
+if test "x$sphinx_cv_warn_maybe" != "x$MAYBE_WARN"; then
+	unset sphinx_cv_warn_cflags
+fi
+AC_CACHE_CHECK([for supported warning flags], sphinx_cv_warn_cflags, [
+	echo
+	WARN_CFLAGS=""
+
+	# Some warning options are not supported by all versions of
+	# gcc, so test all desired options against the current
+	# compiler.
+	#
+	# Note that there are some order dependencies
+	# here. Specifically, an option that disables a warning will
+	# have no net effect if a later option then enables that
+	# warnings, (perhaps implicitly). So we put some grouped
+	# options (-Wall and -Wextra) up front and the -Wno options
+	# last.
+
+	for W in $MAYBE_WARN; do
+		SPHINX_CC_TRY_FLAG([$W], [WARN_CFLAGS="$WARN_CFLAGS $W"])
+	done
+
+	sphinx_cv_warn_cflags=$WARN_CFLAGS
+	sphinx_cv_warn_maybe=$MAYBE_WARN
+
+	AC_MSG_CHECKING([which warning flags were supported])])
+WARN_CFLAGS="$sphinx_cv_warn_cflags"
+CFLAGS="$CFLAGS $WARN_CFLAGS"
+
+
+AC_CONFIG_FILES([
+    Makefile
+    sphinx.desktop.in
+    src/Makefile
+    po/Makefile.in
+])
+
+AC_OUTPUT
diff --git a/po/.gitignore b/po/.gitignore
new file mode 100644
index 0000000..7be4c75
--- /dev/null
+++ b/po/.gitignore
@@ -0,0 +1,4 @@
+.intltool-merge-cache
+Makefile.in.in
+POTFILES
+stamp-it
diff --git a/po/LINGUAS b/po/LINGUAS
new file mode 100644
index 0000000..bc8cbb0
--- /dev/null
+++ b/po/LINGUAS
@@ -0,0 +1,2 @@
+# please keep this list sorted alphabetically
+#
diff --git a/po/POTFILES.in b/po/POTFILES.in
new file mode 100644
index 0000000..b79ca6b
--- /dev/null
+++ b/po/POTFILES.in
@@ -0,0 +1,4 @@
+[encoding: UTF-8]
+# List of source files containing translatable strings.
+# Please keep this file sorted alphabetically.
+sphinx.desktop
diff --git a/sphinx.desktop.in.in b/sphinx.desktop.in.in
new file mode 100644
index 0000000..225969f
--- /dev/null
+++ b/sphinx.desktop.in.in
@@ -0,0 +1,16 @@
+[Desktop Entry]
+Encoding=UTF-8
+_Name=Sphinx
+_Comment=Cairo Post-Mortem Debugger
+TryExec=sphinx
+Exec=sphinx
+Icon=sphinx
+Type=Application
+#X-GNOME-DocPath=sphinx/index.html
+#X-GNOME-Bugzilla-Bugzilla=GNOME
+#X-GNOME-Bugzilla-Product=sphinx
+#X-GNOME-Bugzilla-Component=BugBuddyBugs
+#X-GNOME-Bugzilla-Version=@VERSION@
+Categories=Graphics;Development;
+StartupNotify=true
+
diff --git a/src/.gitignore b/src/.gitignore
new file mode 100644
index 0000000..0d8e793
--- /dev/null
+++ b/src/.gitignore
@@ -0,0 +1,14 @@
+sphinx
+sphinx.schemas
+.deps
+.libs
+Makefile
+Makefile.in
+*.gcda
+*.gcno
+*.la
+*.lo
+*.loT
+*.o
+*~
+.*.sw?
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..ec6e179
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,40 @@
+bin_PROGRAMS = sphinx
+
+sphinx_SOURCES = sphinx.h \
+		 main.c
+sphinx_CPPFLAGS = \
+		  -DG_DISABLE_DEPRECATED \
+		  -DGTK_DISABLE_DEPRECATED \
+		  -DEXECUTABLE_NAME=\"sphinx\" \
+		  -DSPHINX_DESKTOPDIR=\"$(datadir)/applications/\" \
+		  -DSPHINX_LOCALEDIR=\"$(datadir)/locale/\" \
+		  -DSPHINX_LIBDIR=\"$(pkglibdir)/\" \
+		  -DSPHINX_PIXMAPDIR=\"$(datadir)/pixmaps/\" \
+		  -DSPHINX_PKGDATADIR=\"$(pkgdatadir)/\" \
+		  -DSPHINX_PREFIX=\"$(prefix)/\" \
+		  -DSPHINX_SYSCONFDIR=\"$(sysconfdir)/\" \
+		  $(AM_CPPFLAGS)
+
+sphinx_CFLAGS = @DBG_CFLAGS@
+sphinx_LDADD = @DBG_LIBS@ -lcairo-script-interpreter
+
+pixmapdir = $(datadir)/pixmaps
+pixmap_DATA = \
+	      sphinx.png
+
+pkgdata_DATA = \
+	       cairoscript.lang
+
+schemadir = $(GCONF_SCHEMA_FILE_DIR)
+schema_in_files = sphinx.schemas.in
+schema_DATA = sphinx.schemas
+
+EXTRA_DIST = \
+	     $(pixmap_DATA)
+
+@INTLTOOL_SCHEMAS_RULE@
+
+if GCONF_SCHEMAS_INSTALL
+install-data-local:
+	GCONF_CONFIG_SOURCE=$(GCONF_SCHEMA_CONFIG_SOURCE) $(GCONFTOOL) --makefile-install-rule $(top_builddir)/src/$(schema_DATA)
+endif
diff --git a/src/cairoscript.lang b/src/cairoscript.lang
new file mode 100644
index 0000000..9b8e4b5
--- /dev/null
+++ b/src/cairoscript.lang
@@ -0,0 +1,152 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<language id="cairoscript" _name="CairoScript" version="2.0" _section="Scripts">
+  <metadata>
+    <property name="mimetypes">text/x-cairoscript</property>
+    <property name="line-comment-start">%</property>
+  </metadata>
+
+  <styles>
+    <style id="shebang" _name="Shebang" map-to="def:shebang"/>
+    <style id="comment" _name="Comment" map-to="def:comment"/>
+    <style id="immediate" _name="Immediate" map-to="def:preprocessor"/>
+    <style id="literal" _name="Literal" map-to="def:constant"/>
+    <style id="number" _name="Number" map-to="def:floating-point"/>
+    <style id="operator" _name="Operator" map-to="def:keyword"/>
+    <style id="path" _name="Path" map-to="def:keyword"/>
+    <style id="procedure" _name="Procedure" map-to="def:function"/>
+    <style id="string" _name="String" map-to="def:string"/>
+    <style id="string85" _name="String85" map-to="def:string"/>
+    <style id="hexstring" _name="HexString" map-to="def:string"/>
+    <style id="types" _name="Type" map-to="def:type"/>
+  </styles>
+
+  <definitions>
+    <context id="cairoscript">
+      <include>
+	<context id="shebang" style-ref="shebang" first-line-only="true" end-at-line-end="true">
+	  <start>%!</start>
+	</context>
+
+	<context id="comment" style-ref="comment" end-at-line-end="true">
+	  <start>%</start>
+	</context>
+
+	<context id="string" style-ref="string">
+	  <start>\(</start>
+	  <end>\)</end>
+	  <include>
+	    <!-- highlight escaped chars -->
+	    <context style-ref="def:special-char">
+	      <match>\\[()]</match>
+	    </context>
+	    <context>
+	      <match>\\</match>
+	    </context>
+	  </include>
+	</context>
+	<context id="string85" style-ref="string85">
+	  <start>&lt;~</start>
+	  <end>~&gt;</end>
+	</context>
+	<context id="hexstring" style-ref="hexstring">
+	  <start>&lt;</start>
+	  <end>&gt;</end>
+	</context>
+
+	<context id="immediate" style-ref="immediate">
+	  <match extended="true">
+	    (//[^/ ]*)
+	  </match>
+	</context>
+
+	<context id="literal" style-ref="literal">
+	  <match extended="true">
+	    (/[^/ ]*)
+	  </match>
+	</context>
+
+	<context id="number" style-ref="number">
+	  <match extended="true">
+	    (\%[[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?)
+	  </match>
+	</context>
+
+	<context id="operator" style-ref="operator">
+	  <keyword>\[</keyword>
+	  <keyword>\]</keyword>
+	  <keyword>def</keyword>
+	  <keyword>dup</keyword>
+	  <keyword>exch</keyword>
+	  <keyword>get</keyword>
+	  <keyword>pop</keyword>
+	  <keyword>roll</keyword>
+	  <keyword>set</keyword>
+	  <keyword>undef</keyword>
+	</context>
+	<context id="types" style-ref="types">
+	  <keyword>a</keyword>
+	  <keyword>context</keyword>
+	  <keyword>dict</keyword>
+	  <keyword>font</keyword>
+	  <keyword>filter</keyword>
+	  <keyword>g</keyword>
+	  <keyword>image</keyword>
+	  <keyword>linear</keyword>
+	  <keyword>pattern</keyword>
+	  <keyword>radial</keyword>
+	  <keyword>rgb</keyword>
+	  <keyword>rgba</keyword>
+	  <keyword>scaled_font</keyword>
+	  <keyword>surface</keyword>
+	</context>
+	<context id="path" style-ref="path">
+	  <keyword>arc-?</keyword>
+	  <keyword>c</keyword>
+	  <keyword>C</keyword>
+	  <keyword>h</keyword>
+	  <keyword>l</keyword>
+	  <keyword>L</keyword>
+	  <keyword>m</keyword>
+	  <keyword>M</keyword>
+	  <keyword>n</keyword>
+	  <keyword>N</keyword>
+	  <keyword>rectangle</keyword>
+	</context>
+	<context id="procedure" style-ref="procedure">
+	  <keyword>add_color_stop</keyword>
+	  <keyword>clip\+?</keyword>
+	  <keyword>fill\+?</keyword>
+	  <keyword>identity</keyword>
+	  <keyword>mask</keyword>
+	  <keyword>paint</keyword>
+	  <keyword>paint_with_alpha</keyword>
+	  <keyword>pop_group</keyword>
+	  <keyword>push_group</keyword>
+	  <keyword>restore</keyword>
+	  <keyword>save</keyword>
+	  <keyword>scale</keyword>
+	  <keyword>set_antialias</keyword>
+	  <keyword>set_dash</keyword>
+	  <keyword>set_fill_rule</keyword>
+	  <keyword>set_device_offset</keyword>
+	  <keyword>set_line_cap</keyword>
+	  <keyword>set_line_join</keyword>
+	  <keyword>set_line_width</keyword>
+	  <keyword>set_miter_limit</keyword>
+	  <keyword>set_operator</keyword>
+	  <keyword>set_matrix</keyword>
+	  <keyword>set_scaled_font</keyword>
+	  <keyword>set_source</keyword>
+	  <keyword>show_glyphs</keyword>
+	  <keyword>show_text_glyphs</keyword>
+	  <keyword>stroke\+?</keyword>
+	  <keyword>transform</keyword>
+	  <keyword>translate</keyword>
+	  <keyword>reset_clip</keyword>
+	  <keyword>rotate</keyword>
+	</context>
+      </include>
+    </context>
+  </definitions>
+</language>
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..7bf2094
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,1076 @@
+/* sphinx - A Cairo post-mortem debugger
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "sphinx.h"
+
+#include <gconf/gconf-client.h>
+#include <gtk/gtk.h>
+#include <gtksourceview/gtksourceview.h>
+#include <gtksourceview/gtksourcelanguage.h>
+#include <gtksourceview/gtksourcelanguagemanager.h>
+#include <gtksourceview/gtksourcestylescheme.h>
+#include <gtksourceview/gtksourcestyleschememanager.h>
+#include <gtksourceview/gtksourceprintcompositor.h>
+
+#include <cairo-script-interpreter.h>
+
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#define APPNAME "Sphinx"
+#define GCONF_DIR "/apps/sphinx"
+
+static gboolean
+sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error);
+
+static gboolean
+sphinx_open_trace (sphinx_t *sphinx, const char *filename, GError **error);
+
+static void
+sphinx_run_step (sphinx_t *sphinx);
+
+static void
+sphinx_run_continue (sphinx_t *sphinx);
+
+static void
+sphinx_run_break (sphinx_t *sphinx);
+
+static void
+sphinx_run_trace (sphinx_t *sphinx,
+		  const GtkTextIter *start,
+		  const GtkTextIter *end);
+
+static gboolean
+paginate (GtkPrintOperation        *operation,
+	  GtkPrintContext          *context,
+	  GtkSourcePrintCompositor *compositor)
+{
+    if (gtk_source_print_compositor_paginate (compositor, context)) {
+	gtk_print_operation_set_n_pages (operation,
+					 gtk_source_print_compositor_get_n_pages (compositor));
+
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+#define ENABLE_CUSTOM_OVERLAY
+
+static void
+draw_page (GtkPrintOperation        *operation,
+	   GtkPrintContext          *context,
+	   gint                      page_nr,
+	   GtkSourcePrintCompositor *compositor)
+{
+#ifdef ENABLE_CUSTOM_OVERLAY
+    /* This part of the code shows how to add a custom overlay to the
+       printed text generated by GtkSourcePrintCompositor */
+
+    cairo_t *cr;
+    PangoLayout *layout;
+    PangoFontDescription *desc;
+    PangoRectangle rect;
+
+
+    cr = gtk_print_context_get_cairo_context (context);
+
+    cairo_save (cr);
+
+    layout = gtk_print_context_create_pango_layout (context);
+
+    pango_layout_set_text (layout, "Draft", -1);
+
+    desc = pango_font_description_from_string ("Sans Bold 120");
+    pango_layout_set_font_description (layout, desc);
+    pango_font_description_free (desc);
+
+
+    pango_layout_get_extents (layout, NULL, &rect);
+
+    cairo_move_to (cr,
+		   (gtk_print_context_get_width (context) - ((double) rect.width / (double) PANGO_SCALE)) / 2,
+		   (gtk_print_context_get_height (context) - ((double) rect.height / (double) PANGO_SCALE)) / 2);
+
+    pango_cairo_layout_path (cr, layout);
+
+    /* Font Outline */
+    cairo_set_source_rgba (cr, 0.85, 0.85, 0.85, 0.80);
+    cairo_set_line_width (cr, 0.5);
+    cairo_stroke_preserve (cr);
+
+    /* Font Fill */
+    cairo_set_source_rgba (cr, 0.8, 0.8, 0.8, 0.60);
+    cairo_fill (cr);
+
+    g_object_unref (layout);
+    cairo_restore (cr);
+#endif
+
+    /* To print page_nr you only need to call the following function */
+    gtk_source_print_compositor_draw_page (compositor, context, page_nr);
+}
+
+static void
+end_print (GtkPrintOperation        *operation,
+	   GtkPrintContext          *context,
+	   GtkSourcePrintCompositor *compositor)
+{
+    g_object_unref (compositor);
+}
+
+#define LINE_NUMBERS_FONT_NAME	"Sans 7"
+#define HEADER_FONT_NAME	"Sans 10"
+#define FOOTER_FONT_NAME	"Sans 10"
+#define BODY_FONT_NAME		"Monospace 8"
+
+/*
+#define SETUP_FROM_VIEW
+*/
+
+#undef SETUP_FROM_VIEW
+
+static void
+print_trace_cb (GtkAction *action, sphinx_t *sphinx)
+{
+    GtkSourceView *view;
+    GtkSourcePrintCompositor *compositor;
+    GtkPrintOperation *operation;
+
+    view = GTK_SOURCE_VIEW (sphinx->tv);
+
+#ifdef SETUP_FROM_VIEW
+    compositor = gtk_source_print_compositor_new_from_view (view);
+#else
+
+    compositor = gtk_source_print_compositor_new (sphinx->buffer);
+
+    gtk_source_print_compositor_set_tab_width (compositor,
+					       gtk_source_view_get_tab_width (view));
+
+    gtk_source_print_compositor_set_wrap_mode (compositor,
+					       gtk_text_view_get_wrap_mode (GTK_TEXT_VIEW (view)));
+
+    gtk_source_print_compositor_set_print_line_numbers (compositor, 1);
+
+    gtk_source_print_compositor_set_body_font_name (compositor,
+						    BODY_FONT_NAME);
+
+    /* To test line numbers font != text font */
+    gtk_source_print_compositor_set_line_numbers_font_name (compositor,
+							    LINE_NUMBERS_FONT_NAME);
+
+    gtk_source_print_compositor_set_header_format (compositor,
+						   TRUE,
+						   "Printed on %A",
+						   APPNAME,
+						   "%F");
+
+    gtk_source_print_compositor_set_footer_format (compositor,
+						   TRUE,
+						   "%T",
+						   sphinx->trace_name,
+						   "Page %N/%Q");
+
+    gtk_source_print_compositor_set_print_header (compositor, TRUE);
+    gtk_source_print_compositor_set_print_footer (compositor, TRUE);
+
+    gtk_source_print_compositor_set_header_font_name (compositor,
+						      HEADER_FONT_NAME);
+
+    gtk_source_print_compositor_set_footer_font_name (compositor,
+						      FOOTER_FONT_NAME);
+#endif
+    operation = gtk_print_operation_new ();
+
+    gtk_print_operation_set_job_name (operation, sphinx->trace_name);
+
+    gtk_print_operation_set_show_progress (operation, TRUE);
+
+    g_signal_connect (G_OBJECT (operation), "paginate",
+		      G_CALLBACK (paginate), compositor);
+    g_signal_connect (G_OBJECT (operation), "draw-page",
+		      G_CALLBACK (draw_page), compositor);
+    g_signal_connect (G_OBJECT (operation), "end-print",
+		      G_CALLBACK (end_print), compositor);
+
+    gtk_print_operation_run (operation,
+			     GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
+			     NULL, NULL);
+
+    g_object_unref (operation);
+}
+
+static gchar **
+prepend_search_path (const gchar *const *dirs, const gchar *const *paths)
+{
+    const gchar *const *p;
+    gchar **combined, **c;
+    int count;
+
+    count = 0;
+    for (p = dirs; *p; p++)
+	count++;
+    for (p = paths; *p; p++)
+	count++;
+
+    c = combined = g_new (gchar *, count + 1);
+    while (*dirs)
+	*c++ = (gchar *) *dirs++;
+    while (*paths)
+	*c++ = (gchar *) *paths++;
+    *c = NULL;
+
+    return combined;
+}
+
+static GtkSourceLanguage *
+get_language (void)
+{
+    static GtkSourceLanguage *language;
+
+    if (language == NULL) {
+	const gchar * const lang_dirs[] = {
+	    SPHINX_PKGDATADIR,
+	    NULL
+	};
+	const gchar *const *paths;
+	gchar **combined;
+	GtkSourceLanguageManager *manager;
+
+	manager = gtk_source_language_manager_get_default ();
+	paths = gtk_source_language_manager_get_search_path (manager);
+	combined = prepend_search_path (lang_dirs, paths);
+	gtk_source_language_manager_set_search_path (manager, combined);
+	g_free (combined);
+
+	language = gtk_source_language_manager_get_language (manager,
+							     "cairoscript");
+    }
+
+    return language;
+}
+
+static void
+scheme_changed (GtkComboBox *cb, sphinx_t *sphinx)
+{
+    GtkTreeIter iter;
+    GtkSourceStyleScheme *scheme = NULL;
+
+    if (gtk_combo_box_get_active_iter (cb, &iter)) {
+	GtkSourceStyleSchemeManager *manager;
+	gchar *id;
+
+	gtk_tree_model_get (gtk_combo_box_get_model (cb), &iter, 1, &id, -1);
+	manager = gtk_source_style_scheme_manager_get_default ();
+	scheme = gtk_source_style_scheme_manager_get_scheme (manager, id);
+	g_free (id);
+    }
+
+    gtk_source_buffer_set_style_scheme (sphinx->buffer, scheme);
+    gconf_client_set_string (sphinx->gconf, GCONF_DIR "/scheme",
+			     gtk_source_style_scheme_get_id (scheme),
+			     NULL);
+}
+
+static GtkWidget *
+schemes_combo_box (sphinx_t *sphinx)
+{
+    GtkSourceStyleSchemeManager *manager;
+    const gchar * const *ids;
+    GtkListStore *store;
+    GtkWidget *w;
+    GtkCellRenderer *renderer;
+
+    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
+
+    manager = gtk_source_style_scheme_manager_get_default ();
+    ids = gtk_source_style_scheme_manager_get_scheme_ids (manager);
+    while (*ids) {
+	GtkSourceStyleScheme *scheme;
+	GtkTreeIter iter;
+
+	scheme = gtk_source_style_scheme_manager_get_scheme (manager, *ids);
+	gtk_list_store_append (store, &iter);
+	gtk_list_store_set (store, &iter,
+			    0, gtk_source_style_scheme_get_name (scheme),
+			    1, *ids,
+			    -1);
+	ids++;
+    }
+
+    w = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));
+    g_object_unref (store);
+
+    renderer = gtk_cell_renderer_text_new ();
+    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (w), renderer, TRUE);
+    gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (w), renderer,
+				    "text", 1,
+				    NULL);
+
+    g_signal_connect (w, "changed",
+		      G_CALLBACK (scheme_changed), sphinx);
+
+    return w;
+}
+
+static void
+open_trace_dlg (GtkAction *action, sphinx_t *sphinx)
+{
+    GtkWidget *dialog;
+    GtkFileFilter *filter;
+    gchar *filename;
+    GError *error = NULL;
+    gboolean ok;
+
+    dialog = gtk_file_chooser_dialog_new ("Open trace...",
+					  GTK_WINDOW (sphinx->window),
+					  GTK_FILE_CHOOSER_ACTION_OPEN,
+					  GTK_STOCK_CANCEL,
+					  GTK_RESPONSE_CANCEL,
+					  GTK_STOCK_OPEN,
+					  GTK_RESPONSE_OK,
+					  NULL);
+    filter = gtk_file_filter_new ();
+    gtk_file_filter_set_name (filter, "Traces");
+    gtk_file_filter_add_pattern (filter, "*.trace");
+    gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
+
+    filter = gtk_file_filter_new ();
+    gtk_file_filter_set_name (filter, "All");
+    gtk_file_filter_add_pattern (filter, "*");
+    gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
+
+    ok = gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK;
+    filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
+    gtk_widget_destroy (dialog);
+
+    if (ok && ! sphinx_open_trace (sphinx, filename, &error)) {
+	dialog = gtk_message_dialog_new (GTK_WINDOW (sphinx->window),
+					 GTK_DIALOG_DESTROY_WITH_PARENT,
+					 GTK_MESSAGE_ERROR,
+					 GTK_BUTTONS_CLOSE,
+					 "Failed to open trace '%s': %s",
+					 filename, error->message);
+	g_signal_connect (dialog,
+			  "response", G_CALLBACK (gtk_widget_destroy), NULL);
+	gtk_widget_show (dialog);
+	g_error_free (error);
+    }
+    g_free (filename);
+}
+
+static void
+execute_command_dlg (GtkAction *action, sphinx_t *sphinx)
+{
+    GtkWidget *dialog, *w;
+    char *cmd;
+    gboolean ok;
+    GError *error = NULL;
+
+    dialog = gtk_dialog_new_with_buttons ("Trace command...",
+					  GTK_WINDOW (sphinx->window),
+					  GTK_DIALOG_DESTROY_WITH_PARENT |
+					  GTK_DIALOG_NO_SEPARATOR,
+					  GTK_STOCK_EXECUTE,
+					  GTK_RESPONSE_OK,
+					  GTK_STOCK_CANCEL,
+					  GTK_RESPONSE_CANCEL,
+					  NULL);
+    gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
+
+    w = gtk_label_new ("Enter command to trace:");
+    gtk_misc_set_alignment (GTK_MISC (w), 0., .5);
+    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), w,
+			FALSE, FALSE, 0);
+    gtk_widget_show (w);
+
+    w = gtk_entry_new ();
+    gtk_entry_set_activates_default (GTK_ENTRY (w), TRUE);
+    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), w,
+			FALSE, FALSE, 0);
+    gtk_widget_show (w);
+
+    ok = gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK;
+    cmd = g_strdup (gtk_entry_get_text (GTK_ENTRY (w)));
+    gtk_widget_destroy (dialog);
+
+    if (ok && ! sphinx_trace_command (sphinx, cmd, &error)) {
+	dialog = gtk_message_dialog_new (GTK_WINDOW (sphinx->window),
+					  GTK_DIALOG_DESTROY_WITH_PARENT,
+					  GTK_MESSAGE_ERROR,
+					  GTK_BUTTONS_CLOSE,
+					  "Failed to execute command '%s': %s",
+					  cmd, error->message);
+	g_signal_connect (dialog,
+			  "response", G_CALLBACK (gtk_widget_destroy), NULL);
+	gtk_widget_show (dialog);
+	g_error_free (error);
+    }
+    g_free (cmd);
+}
+
+static void
+numbers_toggled_cb (GtkToggleAction *action, sphinx_t *sphinx)
+{
+    gtk_source_view_set_show_line_numbers (GTK_SOURCE_VIEW (sphinx->tv),
+					   gtk_toggle_action_get_active (action));
+}
+
+static void
+run_interpreter_cb (GtkAction *action, sphinx_t *sphinx)
+{
+    GtkTextIter start, end;
+
+    if (! gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (sphinx->buffer),
+						&start,
+						&end))
+	gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (sphinx->buffer),
+				    &start, &end);
+
+    sphinx_run_trace (sphinx, &start, &end);
+}
+
+static void
+reset_interpreter_cb (GtkAction *action, sphinx_t *sphinx)
+{
+    csi_reset_interpreter (sphinx->csi);
+}
+
+static gboolean
+button_press_cb (GtkWidget *w, GdkEventButton *ev, sphinx_t *sphinx)
+{
+    gint y_buf;
+    GtkTextIter line_start;
+    GSList *mark_list;
+
+    if (! gtk_source_view_get_show_line_marks (GTK_SOURCE_VIEW (w)))
+	return FALSE;
+
+    if (ev->window != gtk_text_view_get_window (GTK_TEXT_VIEW (w),
+						GTK_TEXT_WINDOW_LEFT))
+	return FALSE;
+
+    gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (w),
+					   GTK_TEXT_WINDOW_LEFT,
+					   ev->x, ev->y,
+					   NULL, &y_buf);
+    gtk_text_view_get_line_at_y (GTK_TEXT_VIEW (w),
+				 &line_start, y_buf, NULL);
+    mark_list =
+	gtk_source_buffer_get_source_marks_at_line (sphinx->buffer,
+						    gtk_text_iter_get_line (&line_start),
+						    GTK_STOCK_NO);
+    if (mark_list != NULL) {
+	gtk_text_buffer_delete_mark (GTK_TEXT_BUFFER (sphinx->buffer),
+				     GTK_TEXT_MARK (mark_list->data));
+    } else {
+	gtk_source_buffer_create_source_mark (sphinx->buffer, NULL,
+					      GTK_STOCK_NO, &line_start);
+    }
+
+    g_slist_free (mark_list);
+
+    return FALSE;
+}
+
+static cairo_surface_t *
+_create_surface (void *closure,
+		 double width, double height,
+		 csi_object_t *dictionary)
+{
+    return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+}
+
+typedef struct _SurfaceView {
+    GtkWidget widget;
+
+    cairo_surface_t *surface;
+} SurfaceView;
+
+typedef struct _SurfaceViewClass {
+    GtkWidgetClass parent_class;
+} SurfaceViewClass;
+
+static GType surface_view_get_type (void);
+
+G_DEFINE_TYPE (SurfaceView, surface_view, GTK_TYPE_WIDGET)
+
+static gboolean
+surface_view_expose (GtkWidget *w, GdkEventExpose *ev)
+{
+    SurfaceView *self = (SurfaceView *) w;
+    cairo_t *cr;
+
+    cr = gdk_cairo_create (w->window);
+    gdk_cairo_region (cr, ev->region);
+    cairo_clip (cr);
+    cairo_set_source_surface (cr, self->surface,
+			     (w->allocation.width - cairo_image_surface_get_width (self->surface))/2,
+			     (w->allocation.height - cairo_image_surface_get_height (self->surface))/2);
+    cairo_paint (cr);
+    cairo_destroy (cr);
+
+    return TRUE;
+}
+
+static void
+surface_view_size_request (GtkWidget *w, GtkRequisition *req)
+{
+    SurfaceView *self = (SurfaceView *) w;
+
+    req->width = cairo_image_surface_get_width (self->surface);
+    req->height = cairo_image_surface_get_height (self->surface);
+}
+
+static void
+surface_view_finalize (GObject *obj)
+{
+    SurfaceView *self = (SurfaceView *) obj;
+
+    cairo_surface_destroy (self->surface);
+
+    G_OBJECT_CLASS (surface_view_parent_class)->finalize (obj);
+}
+
+static void
+surface_view_class_init (SurfaceViewClass *klass)
+{
+    GObjectClass *object_class = (GObjectClass *) klass;
+    GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
+
+    object_class->finalize = surface_view_finalize;
+
+    widget_class->expose_event = surface_view_expose;
+    widget_class->size_request = surface_view_size_request;
+}
+
+static void
+surface_view_init (SurfaceView *self)
+{
+    GTK_WIDGET_SET_FLAGS (self, GTK_NO_WINDOW);
+}
+
+static gboolean
+_delete_surface (GtkWidget *w, GdkEvent *ev, sphinx_t *sphinx)
+{
+    gtk_widget_destroy (w);
+    sphinx_run_continue (sphinx);
+    return TRUE;
+}
+
+static void
+close_view_cb (GtkAction *action, GtkWidget *window)
+{
+    _delete_surface (window, NULL,
+		     g_object_get_data (G_OBJECT (window), "sphinx"));
+}
+
+static void
+_destroy_surface (void *closure,
+		  cairo_surface_t *surface,
+		  csi_object_t *dictionary)
+{
+    const gchar *ui_xml =
+	"<ui>"
+	" <toolbar name='ToolBar'>"
+	"  <toolitem action='Close'/>"
+	" </toolbar>"
+	"</ui>";
+    GtkActionEntry action_entries[] = {
+	{ "Close", GTK_STOCK_CLOSE, "_Close", "<control>W",
+	    "Close the view", G_CALLBACK (close_view_cb) },
+    };
+    sphinx_t *sphinx = closure;
+    GtkWidget *window, *vbox, *w;
+    SurfaceView *sv;
+    GtkUIManager *ui_manager;
+    GtkActionGroup *action_group;
+    GError *error = NULL;
+
+    if (cairo_image_surface_get_width (surface) == 0 ||
+	cairo_image_surface_get_height (surface) == 0)
+    {
+	return;
+    }
+
+    sphinx_run_break (sphinx);
+    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+    g_object_set_data (G_OBJECT (window), "sphinx", sphinx);
+    gtk_window_set_transient_for (GTK_WINDOW (window),
+				  GTK_WINDOW (sphinx->window));
+    gtk_window_set_default_size (GTK_WINDOW (window), 128, 128);
+    g_signal_connect (window, "delete-event",
+		      G_CALLBACK (_delete_surface), sphinx);
+
+    vbox = gtk_vbox_new (FALSE, 0);
+    gtk_container_add (GTK_CONTAINER (window), vbox);
+    gtk_widget_show (vbox);
+
+    action_group = gtk_action_group_new ("ViewActions");
+    gtk_action_group_add_actions (action_group, action_entries,
+				  G_N_ELEMENTS (action_entries), window);
+
+    ui_manager = gtk_ui_manager_new ();
+    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
+    g_object_unref (action_group);
+
+    if (! gtk_ui_manager_add_ui_from_string (ui_manager, ui_xml, -1, &error)) {
+	g_error ("%s", error->message);
+    }
+
+    gtk_window_add_accel_group (GTK_WINDOW (sphinx->window),
+				gtk_ui_manager_get_accel_group (ui_manager));
+
+    w = gtk_ui_manager_get_widget (ui_manager, "/ToolBar");
+    gtk_box_pack_start (GTK_BOX (vbox), w, FALSE, FALSE, 0);
+    gtk_widget_show (w);
+
+    sv = g_object_new (surface_view_get_type (), NULL);
+    sv->surface = cairo_surface_reference (surface);
+    gtk_box_pack_start (GTK_BOX (vbox), &sv->widget, TRUE, TRUE, 0);
+    gtk_widget_show (&sv->widget);
+
+    gtk_window_present (GTK_WINDOW (window));
+}
+
+static sphinx_t *
+sphinx_new (void)
+{
+    const gchar *ui_xml =
+	"<ui>"
+	" <menubar name='MainMenu'>"
+	"  <menu action='FileMenu'>"
+	"   <menuitem action='Open'/>"
+	"   <menuitem action='Execute'/>"
+	"   <menuitem action='Save'/>"
+	"   <menuitem action='Print'/>"
+	"   <menuitem action='Quit'/>"
+	"  </menu>"
+	"  <menu action='EditMenu'>"
+	"   <menuitem action='Copy'/>"
+	"   <menuitem action='Paste'/>"
+	"  </menu>"
+	"  <menu action='ViewMenu'>"
+	"   <menuitem action='ViewNumbers'/>"
+	"   <menu action='ViewStyleMenu'>"
+	"    <menuitem action='DefaultStyle'/>"
+	"    <placeholder/>"
+	"   </menu>"
+	"  </menu>"
+	"  <menu action='DebugMenu'>"
+	"   <menuitem action='Run'/>"
+	"   <menuitem action='Stop'/>"
+	"   <menuitem action='Step'/>"
+	"   <menuitem action='Reset'/>"
+	"  </menu>"
+	" </menubar>"
+	"</ui>";
+    GtkActionEntry action_entries[] = {
+	{ "FileMenu", NULL, "_File" },
+	{ "Open", GTK_STOCK_OPEN, "_Open", "<control>O",
+	    "Open a new trace", G_CALLBACK (open_trace_dlg) },
+	{ "Execute", GTK_STOCK_EXECUTE, "_Execute", "<control>E",
+	    "Execute a new trace", G_CALLBACK (execute_command_dlg) },
+	{ "Save", GTK_STOCK_SAVE, "_Save", "<control>S",
+	    "Save the trace", G_CALLBACK (gtk_main_quit) },
+	{ "Print", GTK_STOCK_PRINT, "_Print", "<control>P",
+	    "Print the trace", G_CALLBACK (print_trace_cb) },
+	{ "Quit", GTK_STOCK_QUIT, "_Quit", "<control>Q",
+	    "Exit the sphinxlication", G_CALLBACK (gtk_main_quit) },
+	{ "EditMenu", NULL, "_Edit" },
+	{ "Copy", GTK_STOCK_COPY, "_Copy", "<control>C",
+	    "", G_CALLBACK (gtk_main_quit) },
+	{ "Paste", GTK_STOCK_PASTE, "_Paste", "<control>V",
+	    "", G_CALLBACK (gtk_main_quit) },
+	{ "ViewMenu", NULL, "_View" },
+	{ "ViewStyleMenu", NULL, "_Style" },
+	{ "DefaultStyle", NULL, "_Default", NULL,
+	    "", G_CALLBACK (gtk_main_quit) },
+	{ "DebugMenu", NULL, "_Debug" },
+	{ "Run", NULL, "_Run", NULL,
+	    "", G_CALLBACK (run_interpreter_cb) },
+	{ "Stop", NULL, "_Stop", NULL,
+	    "", G_CALLBACK (gtk_main_quit) },
+	{ "Step", NULL, "_Step", NULL,
+	    "", G_CALLBACK (gtk_main_quit) },
+	{ "Reset", NULL, "_Reset", NULL,
+	    "", G_CALLBACK (reset_interpreter_cb) },
+    };
+    GtkToggleActionEntry toggle_entries[] = {
+	{ "ViewNumbers", NULL, "Show line _numbers", NULL,
+	    "", G_CALLBACK (numbers_toggled_cb), TRUE },
+    };
+
+    sphinx_t *sphinx;
+    GtkWidget *w, *sw, *notebook;
+    GtkWidget *vbox;
+    GtkUIManager *ui_manager;
+    GtkActionGroup *action_group;
+    GdkPixbuf *pb;
+    GdkColor color;
+    gchar *str;
+    GError *error = NULL;
+
+    sphinx = g_new0 (sphinx_t, 1);
+
+    sphinx->csi = csi_create ();
+    csi_set_surface_create_function (sphinx->csi, _create_surface, sphinx);
+    csi_set_surface_destroy_function (sphinx->csi, _destroy_surface, sphinx);
+
+    sphinx->gconf = gconf_client_get_default ();
+    gconf_client_add_dir (sphinx->gconf, GCONF_DIR,
+	                  GCONF_CLIENT_PRELOAD_NONE, NULL);
+
+    sphinx->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+    gtk_window_set_title (GTK_WINDOW (sphinx->window), APPNAME);
+    gtk_window_set_default_size (GTK_WINDOW (sphinx->window), 500, 500);
+    pb = gdk_pixbuf_new_from_file (SPHINX_PIXMAPDIR "sphinx.png", NULL);
+    if (pb != NULL) {
+	gtk_window_set_icon (GTK_WINDOW (sphinx->window), pb);
+	g_object_unref (pb);
+    }
+    g_object_set_data_full (G_OBJECT (sphinx->window), "sphinx",
+			    sphinx, (GDestroyNotify) g_free);
+    g_signal_connect (sphinx->window, "delete-event",
+		      G_CALLBACK (gtk_main_quit), NULL);
+
+    vbox = gtk_vbox_new (FALSE, 2);
+    gtk_container_add (GTK_CONTAINER (sphinx->window), vbox);
+    gtk_widget_show (vbox);
+
+    action_group = gtk_action_group_new ("AppActions");
+    gtk_action_group_add_actions (action_group, action_entries,
+				  G_N_ELEMENTS (action_entries), sphinx);
+    gtk_action_group_add_toggle_actions (action_group, toggle_entries,
+				  G_N_ELEMENTS (toggle_entries), sphinx);
+
+    ui_manager = gtk_ui_manager_new ();
+    gtk_ui_manager_insert_action_group (ui_manager, action_group, 0);
+    g_object_unref (action_group);
+
+    if (! gtk_ui_manager_add_ui_from_string (ui_manager, ui_xml, -1, &error)) {
+	g_error ("%s", error->message);
+    }
+
+    gtk_window_add_accel_group (GTK_WINDOW (sphinx->window),
+				gtk_ui_manager_get_accel_group (ui_manager));
+
+    w = gtk_ui_manager_get_widget (ui_manager, "/MainMenu");
+    gtk_box_pack_start (GTK_BOX (vbox), w, FALSE, FALSE, 0);
+    gtk_widget_show (w);
+
+    w = schemes_combo_box (sphinx);
+    gtk_box_pack_start (GTK_BOX (vbox), w, FALSE, FALSE, 0);
+    gtk_widget_show (w);
+
+    sw = gtk_scrolled_window_new (NULL, NULL);
+    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
+				    GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
+    gtk_box_pack_start (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
+    gtk_widget_show (sw);
+
+    w = gtk_source_view_new ();
+    gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (w), GTK_WRAP_WORD_CHAR);
+    gtk_source_view_set_show_line_numbers (GTK_SOURCE_VIEW (w), TRUE);
+    gtk_source_view_set_show_line_marks (GTK_SOURCE_VIEW (w), TRUE);
+
+    gdk_color_parse ("lightred", &color);
+    gtk_source_view_set_mark_category_background (GTK_SOURCE_VIEW (w),
+						  GTK_STOCK_NO, &color);
+    pb = gtk_widget_render_icon (w, GTK_STOCK_NO, GTK_ICON_SIZE_MENU, NULL);
+    gtk_source_view_set_mark_category_pixbuf (GTK_SOURCE_VIEW (w),
+					      GTK_STOCK_NO, pb);
+    g_object_unref (pb);
+    gtk_source_view_set_mark_category_priority (GTK_SOURCE_VIEW (w),
+						GTK_STOCK_NO, 1);
+
+    gdk_color_parse ("lightgreen", &color);
+    gtk_source_view_set_mark_category_background (GTK_SOURCE_VIEW (w),
+						  GTK_STOCK_YES, &color);
+    pb = gtk_widget_render_icon (w, GTK_STOCK_YES, GTK_ICON_SIZE_MENU, NULL);
+    gtk_source_view_set_mark_category_pixbuf (GTK_SOURCE_VIEW (w),
+					      GTK_STOCK_YES, pb);
+    g_object_unref (pb);
+    gtk_source_view_set_mark_category_priority (GTK_SOURCE_VIEW (w),
+						GTK_STOCK_YES, 2);
+
+    g_signal_connect (w, "button-press-event",
+		      G_CALLBACK (button_press_cb), sphinx);
+    gtk_container_add (GTK_CONTAINER (sw), w);
+    gtk_widget_show (w);
+    sphinx->tv = w;
+    sphinx->buffer = (GtkSourceBuffer *) gtk_text_view_get_buffer (GTK_TEXT_VIEW (w));
+    gtk_source_buffer_set_language (sphinx->buffer, get_language ());
+    gtk_source_buffer_set_highlight_syntax (sphinx->buffer, TRUE);
+
+    str = gconf_client_get_string (sphinx->gconf, GCONF_DIR "/scheme", NULL);
+    if (str != NULL) {
+	GtkSourceStyleSchemeManager *manager;
+	GtkSourceStyleScheme *scheme;
+
+	manager = gtk_source_style_scheme_manager_get_default ();
+	scheme = gtk_source_style_scheme_manager_get_scheme (manager, str);
+	gtk_source_buffer_set_style_scheme (sphinx->buffer, scheme);
+	g_free (str);
+    }
+
+    notebook = gtk_notebook_new ();
+    gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_BOTTOM);
+    gtk_box_pack_start (GTK_BOX (vbox), notebook, FALSE, FALSE, 2);
+    gtk_widget_show (notebook);
+
+    w = gtk_label_new ("Operands");
+    gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
+			      w,
+			      gtk_label_new ("Operands"));
+    gtk_widget_show (w);
+
+    w = gtk_label_new ("Dictionary");
+    gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
+			      w,
+			      gtk_label_new ("Dictionary"));
+    gtk_widget_show (w);
+
+    return sphinx;
+}
+
+static gboolean
+trace_read (GIOChannel *io, GIOCondition cond, sphinx_t *sphinx)
+{
+    int fd;
+    gboolean modified;
+    GtkTextIter end;
+    gboolean ret = TRUE;
+
+    modified = gtk_text_buffer_get_modified (GTK_TEXT_BUFFER (sphinx->buffer));
+    gtk_source_buffer_begin_not_undoable_action (sphinx->buffer);
+
+    fd = g_io_channel_unix_get_fd (io);
+    do {
+	char buf[4096];
+	int len;
+
+	len = read (fd, buf, sizeof (buf));
+	if (len <= 0) {
+	    int err = len ? errno : 0;
+	    switch (err) {
+	    case EAGAIN:
+	    case EINTR:
+		goto done;
+	    default:
+		g_io_channel_unref (sphinx->trace_io);
+		sphinx->trace_io = NULL;
+		ret = FALSE;
+		goto done;
+	    }
+	}
+
+	gtk_text_buffer_get_end_iter (GTK_TEXT_BUFFER (sphinx->buffer), &end);
+	gtk_text_buffer_insert (GTK_TEXT_BUFFER (sphinx->buffer), &end, buf, len);
+    } while (TRUE);
+
+done:
+    gtk_source_buffer_end_not_undoable_action (sphinx->buffer);
+    gtk_text_buffer_set_modified (GTK_TEXT_BUFFER (sphinx->buffer), modified);
+
+    gtk_text_buffer_get_end_iter (GTK_TEXT_BUFFER (sphinx->buffer), &end);
+    gtk_text_view_scroll_to_iter (GTK_TEXT_VIEW (sphinx->tv), &end, .0,
+				  TRUE, 0., 0.);
+
+    return ret;
+}
+
+static gboolean
+sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error)
+{
+    gint output;
+    GtkTextIter start, stop;
+    long flags;
+    char **argv, **argv0;
+    int argc;
+    gchar *str;
+
+    if (! g_shell_parse_argv (command, &argc, &argv, error))
+	return FALSE;
+
+    argv0 = g_new (gchar *,  argc + 4);
+    argv0[0] = g_strdup ("cairo-trace");
+    argv0[1] = g_strdup ("--script");
+    argv0[2] = g_strdup ("--no-file");
+    memcpy (argv0+3, argv, (argc + 1) * sizeof (gchar *));
+    g_free (argv);
+
+    if (! g_spawn_async_with_pipes (NULL, argv0, NULL,
+				    G_SPAWN_SEARCH_PATH |
+				    G_SPAWN_STDERR_TO_DEV_NULL,
+				    NULL, NULL, NULL,
+				    NULL, &output, NULL,
+				    error))
+    {
+	g_strfreev (argv0);
+	return FALSE;
+    }
+    g_strfreev (argv0);
+
+    if (sphinx->trace_io) {
+	g_io_channel_shutdown (sphinx->trace_io, FALSE, NULL);
+	g_io_channel_unref (sphinx->trace_io);
+    }
+
+    str = g_strdup_printf ("%s - " APPNAME, command);
+    gtk_window_set_title (GTK_WINDOW (sphinx->window),
+			  str);
+    g_free (str);
+
+    g_free (sphinx->trace_name);
+    sphinx->trace_name = g_strdup (command);
+
+    gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (sphinx->buffer), &start, &stop);
+    gtk_text_buffer_delete (GTK_TEXT_BUFFER (sphinx->buffer), &start, &stop);
+    gtk_source_buffer_remove_source_marks (sphinx->buffer, &start, &stop, NULL);
+
+    flags = fcntl (output, F_GETFL);
+    if ((flags & O_NONBLOCK) == 0)
+	fcntl (output, F_SETFL, flags | O_NONBLOCK);
+
+    sphinx->trace_io = g_io_channel_unix_new (output);
+    g_io_add_watch (sphinx->trace_io,
+		    G_IO_IN | G_IO_HUP, (GIOFunc) trace_read, sphinx);
+    return TRUE;
+}
+
+static gboolean
+sphinx_open_trace (sphinx_t *sphinx, const char *filename, GError **error)
+{
+    GtkTextIter iter;
+    GtkTextIter start, stop;
+    gchar *buf;
+    gsize len;
+    gchar *str;
+
+    if (! g_file_get_contents (filename, &buf, &len, error))
+	return FALSE;
+
+    str = g_strdup_printf ("%s - " APPNAME, filename);
+    gtk_window_set_title (GTK_WINDOW (sphinx->window), str);
+    g_free (str);
+
+    g_free (sphinx->trace_name);
+    sphinx->trace_name = g_strdup (filename);
+
+    gtk_source_buffer_begin_not_undoable_action (sphinx->buffer);
+
+    gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (sphinx->buffer), &start, &stop);
+    gtk_source_buffer_remove_source_marks (sphinx->buffer, &start, &stop, NULL);
+
+    gtk_text_buffer_set_text (GTK_TEXT_BUFFER (sphinx->buffer), buf, len);
+    g_free (buf);
+
+    gtk_source_buffer_end_not_undoable_action (sphinx->buffer);
+    gtk_text_buffer_set_modified (GTK_TEXT_BUFFER (sphinx->buffer), FALSE);
+
+    gtk_text_buffer_get_start_iter (GTK_TEXT_BUFFER (sphinx->buffer), &iter);
+    gtk_text_buffer_place_cursor (GTK_TEXT_BUFFER (sphinx->buffer), &iter);
+
+    return TRUE;
+}
+
+static void
+sphinx_run_step (sphinx_t *sphinx)
+{
+    GtkTextIter iter;
+    gchar *str;
+
+    iter = sphinx->run_start;
+    if (! gtk_text_iter_forward_line (&sphinx->run_start) ||
+	gtk_text_iter_compare (&sphinx->run_start, &sphinx->run_end) > 0)
+    {
+	sphinx->run_start = sphinx->run_end;
+    }
+
+    gtk_text_view_scroll_to_iter (GTK_TEXT_VIEW (sphinx->tv), &iter, .0,
+				  TRUE, 0., 1.);
+
+    str = gtk_text_iter_get_text (&iter, &sphinx->run_start);
+    csi_feed_string (sphinx->csi, str, -1);
+    g_free (str);
+}
+
+
+static gboolean
+sphinx_run_idle (sphinx_t *sphinx)
+{
+    sphinx_run_step (sphinx);
+
+    return ! gtk_text_iter_equal (&sphinx->run_start,
+				  &sphinx->run_end) &&
+	sphinx->run_continue;
+}
+
+static void
+sphinx_run_trace (sphinx_t *sphinx,
+		  const GtkTextIter *start,
+		  const GtkTextIter *end)
+{
+    sphinx->run_start = *start;
+    sphinx->run_end = *end;
+
+    sphinx_run_continue (sphinx);
+}
+
+static void
+sphinx_run_continue (sphinx_t *sphinx)
+{
+    if (! sphinx->run_continue &&
+	gtk_text_iter_compare (&sphinx->run_start, &sphinx->run_end) < 0)
+    {
+	sphinx->run_continue =
+	    g_idle_add ((GSourceFunc) sphinx_run_idle, sphinx);
+    }
+}
+
+static void
+sphinx_run_break (sphinx_t *sphinx)
+{
+    if (sphinx->run_continue) {
+	g_source_remove (sphinx->run_continue);
+	sphinx->run_continue = 0;
+    }
+}
+
+int
+main (int argc, char **argv)
+{
+    sphinx_t *sphinx;
+
+    gtk_init (&argc, &argv);
+
+    sphinx = sphinx_new ();
+    gtk_widget_show (sphinx->window);
+
+    if (argc > 1) {
+	sphinx_open_trace (sphinx, argv[1], NULL);
+    }
+
+    gtk_main ();
+
+    return 0;
+}
diff --git a/src/sphinx.h b/src/sphinx.h
new file mode 100644
index 0000000..23c70b3
--- /dev/null
+++ b/src/sphinx.h
@@ -0,0 +1,50 @@
+/* sphinx - A Cairo post-mortem debugger
+ *
+ * Copyright © 2008 Chris Wilson
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SPHINX_H
+#define SPHINX_H
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gconf/gconf-client.h>
+#include <cairo-script-interpreter.h>
+#include <gtksourceview/gtksourcebuffer.h>
+
+G_BEGIN_DECLS
+
+typedef struct _sphinx {
+    GtkWidget *window;
+
+    GConfClient *gconf;
+
+    cairo_script_interpreter_t *csi;
+
+    gchar *trace_name;
+
+    GtkWidget *tv;
+    GtkSourceBuffer *buffer;
+    GIOChannel *trace_io;
+
+    GtkTextIter run_start;
+    GtkTextIter run_end;
+    guint run_continue;
+} sphinx_t;
+
+G_END_DECLS
+
+#endif /* SPHINX_H */
diff --git a/src/sphinx.png b/src/sphinx.png
new file mode 100644
index 0000000..c7c0b95
--- /dev/null
+++ b/src/sphinx.png
diff --git a/src/sphinx.schemas.in b/src/sphinx.schemas.in
new file mode 100644
index 0000000..a833ea1
--- /dev/null
+++ b/src/sphinx.schemas.in
@@ -0,0 +1,15 @@
+<gconfschemafile>
+    <schemalist>
+	<schema>
+	    <key>/schemas/apps/sphinx/style</key>
+	    <applyto>/apps/sphinx/style</applyto>
+	    <owner>sphinx</owner>
+	    <type>string</type>
+	    <locale name="C">
+		<default>oblivion</default>
+		<short>The colour scheme for syntax highlighting.</short>
+		<long>The colour scheme for syntax highlighting.</long>
+	    </locale>
+	</schema>
+    </schemalist>
+</gconfschemafile>