[evince/wip/gpoo/fix-animation] libview: Fix missing last frame of an animation

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 38167383863b2b37bd751e80f9deffb85afadfa0
Author: Romain <romain deoux gmail com>
Date:   Wed Apr 13 20:13:43 2022 +0000

    libview: Fix missing last frame of an animation
    
    Fixes #1821

 libview/ev-view-presentation.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/libview/ev-view-presentation.c b/libview/ev-view-presentation.c
index f21e83378..759812462 100644
--- a/libview/ev-view-presentation.c
+++ b/libview/ev-view-presentation.c
@@ -84,6 +84,7 @@ struct _EvViewPresentation
 
        /* Animations */
        gboolean               enable_animations;
+        gboolean               animation_finished;
        EvTransitionAnimation *animation;
 
        /* Links */
@@ -265,7 +266,7 @@ ev_view_presentation_animation_cancel (EvViewPresentation *pview)
 static void
 ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
 {
-       ev_view_presentation_animation_cancel (pview);
+        pview->animation_finished = TRUE;
        ev_view_presentation_transition_start (pview);
        gtk_widget_queue_draw (GTK_WIDGET (pview));
 }
@@ -1100,6 +1101,11 @@ ev_view_presentation_draw (GtkWidget *widget,
                         cairo_restore (cr);
                }
 
+                if (pview->animation_finished) {
+                        ev_view_presentation_animation_cancel (pview);
+                        pview->animation_finished = FALSE;
+                }
+
                return TRUE;
        }