[LyX/master] Place the depth bar correctly in screen mode

[Jean-Marc Lasgouttes]

commit 7485225cc6f26c9e03d3674f4f361b431074fa6e
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Tue Sep 11 16:45:48 2018 +0200

    Place the depth bar correctly in screen mode
    
    In full screen mode, it is possible to restrict the text width. In
    this case, the paint bar should not be painted outside of this
    restricted area.
    
    Fixes bug #11286.
---
 src/RowPainter.cpp |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/RowPainter.cpp b/src/RowPainter.cpp
index efc4021..149288b 100644
--- a/src/RowPainter.cpp
+++ b/src/RowPainter.cpp
@@ -327,9 +327,9 @@ void RowPainter::paintDepthBar() const
        for (depth_type i = 1; i <= depth; ++i) {
                int const w = nestMargin() / 5;
                int x = int(xo_) + w * i;
-               // only consider the changebar space if we're drawing outermost 
text
+               // consider the bufferview left margin if we're drawing 
outermost text
                if (text_.isMainText())
-                       x += changebarMargin();
+                       x += pi_.base.bv->leftMargin();
 
                int const starty = yo_ - row_.ascent();
                int const h =  row_.height() - 1 - (i - next_depth - 1) * 3;