Make origin distinct when comparing images

Paint background with QPalette::Base when showing the first image.

1 files changed, 5 insertions, 0 deletions

diff --git a/viewer.cpp b/viewer.cpp
index 71cef78..d0077f7 100644
--- a/viewer.cpp
+++ b/viewer.cpp
@@ -91,6 +91,11 @@ void Viewer::displayFile(int index){
     if(index < 0){

         return;

     }

+    if(index == 0){

+        setBackgroundRole(QPalette::Base);

+    }else{

+        setBackgroundRole(QPalette::AlternateBase);

+    }

     QPixmap pm(mFiles.at(mCurIndex));

     pm = pm.scaled(mMaxSize, Qt::KeepAspectRatio, Qt::SmoothTransformation);

     mLabel->setPixmap(pm);