[clutter-gtk] Allow running examples in non-srcdir builds

[Emmanuele Bassi <ebassi src gnome org>]

commit 2f047ce341df41d2d34801dc6262a5ae77487a31
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri May 26 12:49:44 2017 +0100

    Allow running examples in non-srcdir builds
    
    If we build the examples in a build directory we still want to be able
    to access the ancillary data files.

 examples/Makefile.am          |    3 ++-
 examples/gtk-clutter-events.c |    6 +++++-
 examples/gtk-clutter-test.c   |    6 +++++-
 3 files changed, 12 insertions(+), 3 deletions(-)
---
diff --git a/examples/Makefile.am b/examples/Makefile.am
index b7959fb..01b17f1 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -13,7 +13,8 @@ AM_CPPFLAGS = \
        -I$(srcdir) -I$(top_srcdir) -I$(top_builddir)/clutter-gtk \
        -DGLIB_DISABLE_DEPRECATION_WARNINGS \
        -DGDK_DISABLE_DEPRECATION_WARNINGS \
-       -DCLUTTER_DISABLE_DEPRECATION_WARNINGS
+       -DCLUTTER_DISABLE_DEPRECATION_WARNINGS \
+       -DEXAMPLES_DATADIR=\"$(srcdir)\"
 AM_CFLAGS = $(MAINTAINER_CFLAGS) $(CLUTTER_GTK_DEPS_CFLAGS)
 
 common_deps = \
diff --git a/examples/gtk-clutter-events.c b/examples/gtk-clutter-events.c
index d357b78..a433af5 100644
--- a/examples/gtk-clutter-events.c
+++ b/examples/gtk-clutter-events.c
@@ -3,6 +3,10 @@
 
 #include <clutter-gtk/clutter-gtk.h>
 
+#ifndef EXAMPLES_DATADIR
+#define EXAMPLES_DATADIR "."
+#endif
+
 typedef struct {
 
   GtkWidget    *window;
@@ -181,7 +185,7 @@ main (gint argc, gchar **argv)
                     NULL);
 
   /* Create the main texture that the spin buttons manipulate */
-  pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
+  pixbuf = gdk_pixbuf_new_from_file (EXAMPLES_DATADIR G_DIR_SEPARATOR_S "redhand.png", NULL);
   if (pixbuf == NULL)
     g_error ("Unable to load pixbuf\n");
 
diff --git a/examples/gtk-clutter-test.c b/examples/gtk-clutter-test.c
index f15c265..e61cd84 100644
--- a/examples/gtk-clutter-test.c
+++ b/examples/gtk-clutter-test.c
@@ -11,6 +11,10 @@
 #define WINHEIGHT       400
 #define RADIUS          150
 
+#ifndef EXAMPLES_DATADIR
+#define EXAMPLES_DATADIR "."
+#endif
+
 typedef struct SuperOH
 {
   ClutterActor *stage;
@@ -146,7 +150,7 @@ main (int argc, char *argv[])
   /* calling gtk_clutter_init* multiple times should be safe */
   g_assert (gtk_clutter_init (NULL, NULL) == CLUTTER_INIT_SUCCESS);
 
-  pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
+  pixbuf = gdk_pixbuf_new_from_file (EXAMPLES_DATADIR G_DIR_SEPARATOR_S "redhand.png", NULL);
 
   if (!pixbuf)
     g_error("pixbuf load failed");