[pango/userfont: 5/15] adapt cairoshape example

[Matthias Clasen <matthiasc src gnome org>]

commit 1f5410564a3181cd9a18494f2f87a4a035803c94
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 27 21:09:43 2022 -0500

    adapt cairoshape example

 examples/cairoshape.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/examples/cairoshape.c b/examples/cairoshape.c
index 322eb5d9..92a73d11 100644
--- a/examples/cairoshape.c
+++ b/examples/cairoshape.c
@@ -218,6 +218,17 @@ extents_cb (PangoHbFace        *face,
   return TRUE;
 }
 
+static void
+font_extents_cb (PangoHbFace       *face,
+                 int                size,
+                 hb_font_extents_t *extents,
+                 gpointer           user_data)
+{
+  extents->ascender = size;
+  extents->descender = 0;
+  extents->line_gap = 0;
+}
+
 static void
 render_cb (PangoHbFace    *face,
            int             size,
@@ -250,7 +261,7 @@ setup_fontmap (PangoHbFontMap *fontmap)
   face = pango_hb_face_new_from_file ("/usr/share/fonts/adobe-source-code-pro/SourceCodePro-Black.otf",
                                       0, -1, "Black", desc);
 #endif
-  face = pango_hb_face_new_user (glyph_cb, advance_cb, extents_cb, render_cb, NULL, NULL, "Black", desc);
+  face = pango_hb_face_new_user (font_extents_cb, glyph_cb, advance_cb, extents_cb, render_cb, NULL, NULL, 
"Black", desc);
   pango_hb_font_map_add_face (fontmap, face);
   pango_font_description_free (desc);
 }