From: Patrick McCarty <pnorcks@gmail.com>
Date: Mon, 15 Nov 2010 21:13:57 +0000 (-0800)
Subject: Pango: Change orientation of Y-axis for extra offsets.
X-Git-Tag: release/2.13.40-1~16^2~5
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=25233e40ae1a31b50f949a1d6b4146d01ac9350a;p=lilypond.git

Pango: Change orientation of Y-axis for extra offsets.

This commit fixes issue #1407.

For extra offsets in glyph positioning, the backends expect to see a
Y-axis with positive values tending to the north, but Pango uses the
opposite orientation.  The problem is fixed by flipping the values of
`y_offset'.
---

diff --git a/lily/pango-font.cc b/lily/pango-font.cc
index e9fb2e8fda..21ab85ab66 100644
--- a/lily/pango-font.cc
+++ b/lily/pango-font.cc
@@ -225,7 +225,7 @@ Pango_font::pango_item_string_stencil (PangoGlyphItem const *glyph_item) const
 
       *tail = scm_cons (scm_list_4 (scm_from_double (ggeo.width * scale_),
 				    scm_from_double (ggeo.x_offset * scale_),
-				    scm_from_double (ggeo.y_offset * scale_),
+				    scm_from_double (- ggeo.y_offset * scale_),
 				    char_id),
 			SCM_EOL);
       tail = SCM_CDRLOC (*tail);