From 27b476d319a5869d1052baae097eda4c17ad0b50 Mon Sep 17 00:00:00 2001
From: Hugo Pereira Da Costa <hugo.pereira@free.fr>
Date: Tue, 1 Dec 2015 22:34:48 +0100
Subject: [PATCH] draw outline in anti-aliasing mode, to prevent darker pixel
 in the corner.

---
 kdecoration/breezedecoration.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kdecoration/breezedecoration.cpp b/kdecoration/breezedecoration.cpp
index 78f98995..44e17dbe 100644
--- a/kdecoration/breezedecoration.cpp
+++ b/kdecoration/breezedecoration.cpp
@@ -455,12 +455,13 @@ namespace Breeze
         if( hasBorders() && !s->isAlphaChannelSupported() )
         {
             painter->save();
+            painter->setRenderHint(QPainter::Antialiasing, false);
             painter->setBrush( Qt::NoBrush );
             painter->setPen( c->isActive() ?
                 c->color( ColorGroup::Active, ColorRole::TitleBar ):
                 c->color( ColorGroup::Inactive, ColorRole::Foreground ) );
 
-            painter->drawRect( rect().adjusted( 0.5, 0.5, -0.5, -0.5 ) );
+            painter->drawRect( rect().adjusted( 0, 0, -1, -1 ) );
             painter->restore();
         }