From e3c3a0f18819e6af6807ce2fff2761cf20e24426 Mon Sep 17 00:00:00 2001
From: Artur Wieczorek <artwik@wp.pl>
Date: Sun, 22 Jan 2017 13:05:03 +0100
Subject: [PATCH] Fix calculating position of rotated text (wxPostScriptDC)

Given top-left position of the drawn text should be converted to the bottom-left position, taking into account rotation angle.

Closes #10940
---
 src/generic/dcpsg.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/generic/dcpsg.cpp b/src/generic/dcpsg.cpp
index 1754ac83a9..1bb1ce14f4 100644
--- a/src/generic/dcpsg.cpp
+++ b/src/generic/dcpsg.cpp
@@ -1464,10 +1464,16 @@ void wxPostScriptDCImpl::DoDrawRotatedText( const wxString& text, wxCoord x, wxC
         }
     }
 
+    // Calculate bottom-left coordinates of the rotated text
+    wxCoord text_descent;
+    GetOwner()->GetTextExtent(text, NULL, NULL, &text_descent);
     int size = m_font.GetPointSize();
+    double rad = wxDegToRad(angle);
+    wxCoord bx = wxRound(x + (size - text_descent) * sin(rad));
+    wxCoord by = wxRound(y + (size - text_descent) * cos(rad));
 
     wxString buffer;
-    buffer.Printf( "%f %f moveto\n", XLOG2DEV(x), YLOG2DEV(y));
+    buffer.Printf( "%f %f moveto\n", XLOG2DEV(bx), YLOG2DEV(by));
     buffer.Replace( ",", "." );
     PsPrint( buffer );