From 9cf1e61d8a4180de28c727510d4dca6bbfc8167d Mon Sep 17 00:00:00 2001
From: Frank Severinsen <frank.severinsen@gmail.com>
Date: Fri, 15 May 2020 21:17:24 +0000
Subject: [PATCH] Fix text rotation after flip

fixes https://gitlab.com/kicad/code/kicad/-/issues/4407
---
 pcbnew/class_pcb_text.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pcbnew/class_pcb_text.cpp b/pcbnew/class_pcb_text.cpp
index 0b2fdbdcb2..da843f0f04 100644
--- a/pcbnew/class_pcb_text.cpp
+++ b/pcbnew/class_pcb_text.cpp
@@ -177,6 +177,13 @@ void TEXTE_PCB::Flip( const wxPoint& aCentre, bool aFlipLeftRight )
     SetLayer( FlipLayer( GetLayer(), copperLayerCount ) );
     SetMirrored( !IsMirrored() );
 
+    double text_angle = GetTextAngle();
+    if( text_angle < 1800 )
+        text_angle = 1800 - text_angle;
+    else
+        text_angle = 3600 - text_angle + 1800;
+    SetTextAngle( text_angle );
+
     // adjust justified text for mirroring
     if( GetHorizJustify() == GR_TEXT_HJUSTIFY_LEFT || GetHorizJustify() == GR_TEXT_HJUSTIFY_RIGHT )
     {