From b650e4568bf2481e808bfb1f4862e31e18690049 Mon Sep 17 00:00:00 2001
From: Seth Hillbrand <seth@kipro-pcb.com>
Date: Thu, 30 Jul 2020 06:16:04 -0700
Subject: [PATCH] Mirror hidden text in SVG plotter

We output a 0 opacity text in the SVG plotter to allow searching.  When
this text is changed to 100 opacity, it can show up on the user screen
and so needs to be mirrored to match the stroke font output

Fixes https://gitlab.com/kicad/code/kicad/issues/5001
---
 common/plotters/SVG_plotter.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/common/plotters/SVG_plotter.cpp b/common/plotters/SVG_plotter.cpp
index cbde35a4c2..5124c67ead 100644
--- a/common/plotters/SVG_plotter.cpp
+++ b/common/plotters/SVG_plotter.cpp
@@ -841,10 +841,15 @@ void SVG_PLOTTER::Text( const wxPoint&              aPos,
     }
 
     fprintf( outputFile,
-             "<text x=\"%f\" y=\"%f\"\n"
+             "<text x=\"%f\" y=\"%f\"\n", text_pos_dev.x, text_pos_dev.y );
+
+    /// If the text is mirrored, we should also mirror the hidden text to match
+    if( aSize.x < 0 )
+        fprintf( outputFile, "transform=\"scale(-1 1) translate(%f 0)\"\n", -2 * text_pos_dev.x );
+
+    fprintf( outputFile,
              "textLength=\"%f\" font-size=\"%f\" lengthAdjust=\"spacingAndGlyphs\"\n"
              "text-anchor=\"%s\" opacity=\"0\">%s</text>\n",
-             text_pos_dev.x, text_pos_dev.y,
              sz_dev.x, sz_dev.y,
              hjust, TO_UTF8( XmlEsc( aText ) ) );