- Split between abstract base class (sgpem::CairoWidget) and

derived widget
- Add History::set_notify_enabled() for usage by the frontend 
(for example, when loading from file, you'll want to call
set_notify_enabled(false) before starting)


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@823 3ecf2c5c-341e-0410-92b4-d18e462d057c

Makefile.am

@@ -280,6 +280,7 @@ sgpemv2_LDADD = \
 # Please keep this in sorted order:
 sgpemv2_SOURCES = \
 	src/cairo_elements.cc \
+	src/cairo_widget.cc \
 	src/gui_builder.cc \
 	src/main.cc \
 	src/parse_opts.cc \
@@ -288,6 +289,7 @@ sgpemv2_SOURCES = \
 
 noinst_HEADERS += \
 	src/cairo_elements.hh \
+	src/cairo_widget.hh \
 	src/gui_builder.hh \
 	src/main.hh \
 	src/parse_opts.hh \