[gimp] Add gimp_display_shell_get_window() which returns an image window or NULL

[Michael Natterer <mitch src gnome org>]

commit 97987aff6e8914f708838e2ebf5b7322fab78f85
Author: Michael Natterer <mitch gimp org>
Date:   Mon Sep 28 23:53:05 2009 +0200

    Add gimp_display_shell_get_window() which returns an image window or NULL

 app/display/gimpdisplayshell.c |    9 +++++++++
 app/display/gimpdisplayshell.h |    2 ++
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/app/display/gimpdisplayshell.c b/app/display/gimpdisplayshell.c
index 208efb7..128cb8e 100644
--- a/app/display/gimpdisplayshell.c
+++ b/app/display/gimpdisplayshell.c
@@ -1162,6 +1162,15 @@ gimp_display_shell_new (GimpDisplay       *display,
   return GTK_WIDGET (shell);
 }
 
+GimpImageWindow *
+gimp_display_shell_get_window (GimpDisplayShell *shell)
+{
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+  return GIMP_IMAGE_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (shell),
+                                                     GIMP_TYPE_IMAGE_WINDOW));
+}
+
 void
 gimp_display_shell_reconnect (GimpDisplayShell *shell)
 {
diff --git a/app/display/gimpdisplayshell.h b/app/display/gimpdisplayshell.h
index 70c0c35..e183d2b 100644
--- a/app/display/gimpdisplayshell.h
+++ b/app/display/gimpdisplayshell.h
@@ -232,6 +232,8 @@ GtkWidget * gimp_display_shell_new                 (GimpDisplay        *display,
                                                     GimpUIManager      *popup_manager,
                                                     GimpDialogFactory  *display_factory);
 
+GimpImageWindow * gimp_display_shell_get_window    (GimpDisplayShell   *shell);
+
 void        gimp_display_shell_reconnect           (GimpDisplayShell   *shell);
 
 void        gimp_display_shell_empty               (GimpDisplayShell   *shell);