From 1e4810b2c40f6275afa3e81093638388c3c396ba Mon Sep 17 00:00:00 2001
From: Lawrence Lee <billee@ucdavis.edu>
Date: Fri, 26 Jun 2020 23:00:09 -0700
Subject: [PATCH] Make preview update when its crop origin changes

Addresses issue #5806 by triggering a re-rendering of the preview's crop
when the crop moves but the dimensions stay the same.
---
 rtengine/dcrop.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/rtengine/dcrop.cc b/rtengine/dcrop.cc
index 99bc2581d..ba1884c93 100644
--- a/rtengine/dcrop.cc
+++ b/rtengine/dcrop.cc
@@ -1780,8 +1780,11 @@ bool Crop::setCropSizes(int rcx, int rcy, int rcw, int rch, int skip, bool inter
     int orW, orH;
     parent->imgsrc->getSize(cp, orW, orH);
 
-    trafx = orx;
-    trafy = ory;
+    if (trafx != orx || trafy != ory) {
+        trafx = orx;
+        trafy = ory;
+        changed = true;
+    }
 
     int cw = skips(bw, skip);
     int ch = skips(bh, skip);