[gnome-flashback] screenshot: don't include selection overlay

[Alberts Muktupāvels <muktupavels src gnome org>]

commit eda213d3e9cab00fc7e3f49c6fda1502d1be32cd
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Wed May 10 21:06:07 2017 +0300

    screenshot: don't include selection overlay
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780358

 gnome-flashback/libscreenshot/gf-screenshot.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gnome-flashback/libscreenshot/gf-screenshot.c b/gnome-flashback/libscreenshot/gf-screenshot.c
index c031685..ae35e18 100644
--- a/gnome-flashback/libscreenshot/gf-screenshot.c
+++ b/gnome-flashback/libscreenshot/gf-screenshot.c
@@ -1173,9 +1173,17 @@ handle_select_area (GfDBusScreenshot      *dbus_screenshot,
   selected = gf_select_area_select (select_area, &x, &y, &width, &height);
   g_object_unref (select_area);
 
+  gdk_flush ();
+
   if (selected)
     {
       unscale_area (&x, &y, &width, &height);
+
+      /* wait 200ms to allow compositor finish redrawing selected area
+       * without selection overlay.
+       */
+      g_usleep (G_USEC_PER_SEC / 5);
+
       gf_dbus_screenshot_complete_select_area (dbus_screenshot, invocation,
                                                x, y, width, height);
     }