[gimp] app: add gimp->clipboard_image and API to set/get it

[Michael Natterer <mitch src gnome org>]

commit 7130ba95e19f82d8f839e0f67c380dc91a666ea3
Author: Michael Natterer <mitch gimp org>
Date:   Mon Sep 19 20:13:39 2016 +0200

    app: add gimp->clipboard_image and API to set/get it

 app/core/gimp.c |   59 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 app/core/gimp.h |    5 ++++
 2 files changed, 59 insertions(+), 5 deletions(-)
---
diff --git a/app/core/gimp.c b/app/core/gimp.c
index e70b100..d431d51 100644
--- a/app/core/gimp.c
+++ b/app/core/gimp.c
@@ -432,6 +432,12 @@ gimp_finalize (GObject *object)
       gimp->clipboard_buffer = NULL;
     }
 
+  if (gimp->clipboard_image)
+    {
+      g_object_unref (gimp->clipboard_image);
+      gimp->clipboard_image = NULL;
+    }
+
   if (gimp->displays)
     {
       g_object_unref (gimp->displays);
@@ -536,8 +542,12 @@ gimp_get_memsize (GimpObject *object,
 
   memsize += gimp_object_get_memsize (GIMP_OBJECT (gimp->displays), gui_size);
 
+  memsize += gimp_object_get_memsize (GIMP_OBJECT (gimp->clipboard_image),
+                                      gui_size);
   memsize += gimp_object_get_memsize (GIMP_OBJECT (gimp->clipboard_buffer),
                                       gui_size);
+  memsize += gimp_object_get_memsize (GIMP_OBJECT (gimp->named_buffers),
+                                      gui_size);
 
   memsize += gimp_data_factories_get_memsize (gimp, gui_size);
 
@@ -966,23 +976,62 @@ gimp_get_tool_info_iter (Gimp *gimp)
 }
 
 void
+gimp_set_clipboard_image (Gimp      *gimp,
+                          GimpImage *image)
+{
+  g_return_if_fail (GIMP_IS_GIMP (gimp));
+  g_return_if_fail (image == NULL || GIMP_IS_IMAGE (image));
+
+  /* ref first, it could be the same as gimp->clipboard_image, but
+   * don't bail if equal because always we want the signal emission
+   */
+  if (image)
+    g_object_ref (image);
+
+  if (gimp->clipboard_buffer)
+    {
+      g_object_unref (gimp->clipboard_buffer);
+      gimp->clipboard_buffer = NULL;
+    }
+
+  if (gimp->clipboard_image)
+    g_object_unref (gimp->clipboard_image);
+
+  gimp->clipboard_image = image;
+
+  g_signal_emit (gimp, gimp_signals[CLIPBOARD_CHANGED], 0);
+}
+
+GimpImage *
+gimp_get_clipboard_image (Gimp *gimp)
+{
+  g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
+
+  return gimp->clipboard_image;
+}
+
+void
 gimp_set_clipboard_buffer (Gimp       *gimp,
                            GimpBuffer *buffer)
 {
   g_return_if_fail (GIMP_IS_GIMP (gimp));
   g_return_if_fail (buffer == NULL || GIMP_IS_BUFFER (buffer));
 
-  if (buffer == gimp->clipboard_buffer)
-    return;
+  /* see above */
+  if (buffer)
+    g_object_ref (buffer);
+
+  if (gimp->clipboard_image)
+    {
+      g_object_unref (gimp->clipboard_image);
+      gimp->clipboard_image = NULL;
+    }
 
   if (gimp->clipboard_buffer)
     g_object_unref (gimp->clipboard_buffer);
 
   gimp->clipboard_buffer = buffer;
 
-  if (gimp->clipboard_buffer)
-    g_object_ref (gimp->clipboard_buffer);
-
   g_signal_emit (gimp, gimp_signals[CLIPBOARD_CHANGED], 0);
 }
 
diff --git a/app/core/gimp.h b/app/core/gimp.h
index 538cc7a..0012c6a 100644
--- a/app/core/gimp.h
+++ b/app/core/gimp.h
@@ -89,6 +89,7 @@ struct _Gimp
 
   GList                  *image_windows;
 
+  GimpImage              *clipboard_image;
   GimpBuffer             *clipboard_buffer;
   GimpContainer          *named_buffers;
 
@@ -184,6 +185,10 @@ GList        * gimp_get_image_windows      (Gimp                *gimp);
 GList        * gimp_get_paint_info_iter    (Gimp                *gimp);
 GList        * gimp_get_tool_info_iter     (Gimp                *gimp);
 
+void           gimp_set_clipboard_image    (Gimp                *gimp,
+                                            GimpImage           *image);
+GimpImage    * gimp_get_clipboard_image    (Gimp                *gimp);
+
 void           gimp_set_clipboard_buffer   (Gimp                *gimp,
                                             GimpBuffer          *buffer);
 GimpBuffer   * gimp_get_clipboard_buffer   (Gimp                *gimp);