[gimp/gimp-2-10] Issue 2708: Animation playback detach and zoom

[Michael Natterer <mitch src gnome org>]

commit cbc8c7f17c7e9142d7406c4355d40f5a90c37ed0
Author: Massimo Valentini <mvalentini335 gmail com>
Date:   Fri Aug 16 15:17:49 2019 +0200

    Issue 2708: Animation playback detach and zoom

 plug-ins/common/animation-play.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/plug-ins/common/animation-play.c b/plug-ins/common/animation-play.c
index d3803397d7..2bfa218742 100644
--- a/plug-ins/common/animation-play.c
+++ b/plug-ins/common/animation-play.c
@@ -1198,14 +1198,15 @@ render_frame (gint32 whichframe)
     }
 
   /* Display the preview buffer. */
-  gdk_draw_rgb_image (gtk_widget_get_window (da),
-                      (gtk_widget_get_style (da))->white_gc,
-                      (gint) ((drawing_width - drawing_scale * width) / 2),
-                      (gint) ((drawing_height - drawing_scale * height) / 2),
-                      drawing_width, drawing_height,
-                      (total_frames == 1 ?
-                       GDK_RGB_DITHER_MAX : DITHERTYPE),
-                      preview_data, drawing_width * 3);
+  if (gtk_widget_get_realized (da))
+    gdk_draw_rgb_image (gtk_widget_get_window (da),
+                        (gtk_widget_get_style (da))->white_gc,
+                        (gint) ((drawing_width - drawing_scale * width) / 2),
+                        (gint) ((drawing_height - drawing_scale * height) / 2),
+                        drawing_width, drawing_height,
+                        (total_frames == 1 ?
+                         GDK_RGB_DITHER_MAX : DITHERTYPE),
+                        preview_data, drawing_width * 3);
 
   /* clean up */
   g_object_unref (buffer);