[libchamplain] Include champlain-memphis-renderer.h from champlain.h when available

[Jiří Techet <jiritechet src gnome org>]

commit 654ba9dc4118db489fa77baf8a3d2ddcb34c0015
Author: Jiří Techet <techet gmail com>
Date:   Sat Feb 9 18:57:09 2019 +0100

    Include champlain-memphis-renderer.h from champlain.h when available

 champlain/champlain-memphis-renderer.h | 14 +++++---------
 champlain/champlain.h                  |  4 ++++
 demos/local-rendering.c                |  1 -
 3 files changed, 9 insertions(+), 10 deletions(-)
---
diff --git a/champlain/champlain-memphis-renderer.h b/champlain/champlain-memphis-renderer.h
index 9794117..ee2f816 100644
--- a/champlain/champlain-memphis-renderer.h
+++ b/champlain/champlain-memphis-renderer.h
@@ -17,18 +17,16 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#if !defined (__CHAMPLAIN_CHAMPLAIN_H_INSIDE__) && !defined (CHAMPLAIN_COMPILATION)
+#error "Only <champlain/champlain.h> can be included directly."
+#endif
+
 #ifndef _CHAMPLAIN_MEMPHIS_RENDERER
 #define _CHAMPLAIN_MEMPHIS_RENDERER
 
-#define __CHAMPLAIN_CHAMPLAIN_H_INSIDE__
-
-#include "champlain/champlain-features.h"
-
-#include <champlain/champlain-tile-source.h>
+#include <champlain/champlain-renderer.h>
 #include <champlain/champlain-bounding-box.h>
 
-#include <glib-object.h>
-
 G_BEGIN_DECLS
 
 #define CHAMPLAIN_TYPE_MEMPHIS_RENDERER champlain_memphis_renderer_get_type ()
@@ -187,8 +185,6 @@ void champlain_memphis_renderer_set_tile_size (ChamplainMemphisRenderer *rendere
 
 guint champlain_memphis_renderer_get_tile_size (ChamplainMemphisRenderer *renderer);
 
-#undef __CHAMPLAIN_CHAMPLAIN_H_INSIDE__
-
 G_END_DECLS
 
 #endif /* _CHAMPLAIN_MEMPHIS_RENDERER */
diff --git a/champlain/champlain.h b/champlain/champlain.h
index 7285964..028e40a 100644
--- a/champlain/champlain.h
+++ b/champlain/champlain.h
@@ -62,6 +62,10 @@
 #include "champlain/champlain-image-renderer.h"
 #include "champlain/champlain-error-tile-renderer.h"
 
+#ifdef CHAMPLAIN_HAS_MEMPHIS
+# include "champlain/champlain-memphis-renderer.h"
+#endif
+
 #undef __CHAMPLAIN_CHAMPLAIN_H_INSIDE__
 
 #endif
diff --git a/demos/local-rendering.c b/demos/local-rendering.c
index 8dd3c99..c65b076 100644
--- a/demos/local-rendering.c
+++ b/demos/local-rendering.c
@@ -19,7 +19,6 @@
 
 #include <gtk/gtk.h>
 #include <champlain/champlain.h>
-#include <champlain/champlain-memphis-renderer.h>
 #include <champlain-gtk/champlain-gtk.h>
 #include <clutter-gtk/clutter-gtk.h>
 #include <memphis/memphis.h>