[gimp/wip/nielsdg/fix-gir-errors] Add missing includes

[Niels De Graef <nielsdg src gnome org>]

commit d2198966286881bdea4d64f00737f5573f8905b6
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Thu May 21 15:18:29 2020 +0200

    Add missing includes
    
    We were exposing symbols in some headers, where we neglected to include
    the symbol's header itself. This was okay for gcc because the header was
    included _somewhere_, but not at the right place. The GIR parser tries
    to resolve all symbols in a given header file by recursively looking in
    all included files, so if we don't import the correct headers, the GIR
    scanner will give errors.

 libgimp/gimpaspectpreview.h       | 2 ++
 libgimp/gimpbrushselectbutton.h   | 2 ++
 libgimp/gimpdrawablepreview.h     | 3 ++-
 libgimp/gimpselectbutton.h        | 2 ++
 libgimpmodule/gimpmodule.h        | 1 +
 libgimpwidgets/gimpcolordisplay.h | 3 +++
 6 files changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/libgimp/gimpaspectpreview.h b/libgimp/gimpaspectpreview.h
index e7d126aaaf..97e7797c1a 100644
--- a/libgimp/gimpaspectpreview.h
+++ b/libgimp/gimpaspectpreview.h
@@ -27,6 +27,8 @@
 
 G_BEGIN_DECLS
 
+#include <gtk/gtk.h>
+#include <libgimp/gimp.h>
 
 /* For information look into the C source or the html documentation */
 
diff --git a/libgimp/gimpbrushselectbutton.h b/libgimp/gimpbrushselectbutton.h
index 95be946d0d..b7c792bde6 100644
--- a/libgimp/gimpbrushselectbutton.h
+++ b/libgimp/gimpbrushselectbutton.h
@@ -25,6 +25,8 @@
 #ifndef __GIMP_BRUSH_SELECT_BUTTON_H__
 #define __GIMP_BRUSH_SELECT_BUTTON_H__
 
+#include <libgimp/gimp.h>
+
 #include <libgimp/gimpselectbutton.h>
 
 G_BEGIN_DECLS
diff --git a/libgimp/gimpdrawablepreview.h b/libgimp/gimpdrawablepreview.h
index 48aa389650..bb55a83bd8 100644
--- a/libgimp/gimpdrawablepreview.h
+++ b/libgimp/gimpdrawablepreview.h
@@ -25,8 +25,9 @@
 #ifndef __GIMP_DRAWABLE_PREVIEW_H__
 #define __GIMP_DRAWABLE_PREVIEW_H__
 
-G_BEGIN_DECLS
+#include <libgimp/gimp.h>
 
+G_BEGIN_DECLS
 
 /* For information look into the C source or the html documentation */
 
diff --git a/libgimp/gimpselectbutton.h b/libgimp/gimpselectbutton.h
index 6b191f697d..b7fb1d4152 100644
--- a/libgimp/gimpselectbutton.h
+++ b/libgimp/gimpselectbutton.h
@@ -25,6 +25,8 @@
 #ifndef __GIMP_SELECT_BUTTON_H__
 #define __GIMP_SELECT_BUTTON_H__
 
+#include <gtk/gtk.h>
+
 G_BEGIN_DECLS
 
 /* For information look into the C source or the html documentation */
diff --git a/libgimpmodule/gimpmodule.h b/libgimpmodule/gimpmodule.h
index 783b07dedf..d10a7a4a7c 100644
--- a/libgimpmodule/gimpmodule.h
+++ b/libgimpmodule/gimpmodule.h
@@ -22,6 +22,7 @@
 #ifndef __GIMP_MODULE_H__
 #define __GIMP_MODULE_H__
 
+#include <gio/gio.h>
 #include <gmodule.h>
 
 #define __GIMP_MODULE_H_INSIDE__
diff --git a/libgimpwidgets/gimpcolordisplay.h b/libgimpwidgets/gimpcolordisplay.h
index 03c31f2884..1afa78b9cb 100644
--- a/libgimpwidgets/gimpcolordisplay.h
+++ b/libgimpwidgets/gimpcolordisplay.h
@@ -28,6 +28,9 @@
 
 G_BEGIN_DECLS
 
+#include <gegl.h>
+#include <gtk/gtk.h>
+
 /* For information look at the html documentation */