Fix mirroring of TextBox.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/15576

pcbnew/dialogs/dialog_textbox_properties.cpp

@@ -359,10 +359,10 @@ bool DIALOG_TEXTBOX_PROPERTIES::TransferDataFromWindow()
 
     m_textBox->SetBorderEnabled( m_borderCheckbox->GetValue() );
     STROKE_PARAMS stroke = m_textBox->GetStroke();
+
     if( !m_borderWidth.IsIndeterminate() )
         stroke.SetWidth( m_borderWidth.GetValue() );
 
-
     auto it = lineTypeNames.begin();
     std::advance( it, m_borderStyleCombo->GetSelection() );
 

pcbnew/pcb_painter.cpp

@@ -1971,8 +1971,8 @@ void PCB_PAINTER::strokeText( const wxString& aText, const VECTOR2I& aPosition,
     m_gal->SetIsStroke( font->IsStroke() );
 
     VECTOR2I pos( aPosition );
-    VECTOR2I fudge
-    { KiROUND( 0.16 * aAttrs.m_StrokeWidth ), 0 };
+    VECTOR2I fudge( KiROUND( 0.16 * aAttrs.m_StrokeWidth ), 0 );
+
     RotatePoint( fudge, aAttrs.m_Angle );
 
     if( ( aAttrs.m_Halign == GR_TEXT_H_ALIGN_LEFT && !aAttrs.m_Mirrored )

pcbnew/pcb_textbox.cpp

@@ -191,10 +191,11 @@ VECTOR2I PCB_TEXTBOX::GetDrawPos() const
     VECTOR2I              textAnchor;
     VECTOR2I              offset;
 
-    if( IsMirrored() )
-    {
+    if( IsBackLayer( GetLayer() ) )
         std::swap( corners[0], corners[1] );
 
+    if( IsMirrored() )
+    {
         switch( GetHorizJustify() )
         {
         case GR_TEXT_H_ALIGN_LEFT:   effectiveAlignment = GR_TEXT_H_ALIGN_RIGHT;  break;