[pango/matthiasc/for-main: 2/3] Add pango_layout_iter_get_run_baseline

[Matthias Clasen <matthiasc src gnome org>]

commit 8bc08dc2900da1cbb34987934b8954fdb576dfeb
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 29 21:20:37 2021 -0400

    Add pango_layout_iter_get_run_baseline
    
    This is useful information.

 pango/pango-layout.c | 16 ++++++++++++++++
 pango/pango-layout.h |  2 ++
 2 files changed, 18 insertions(+)
---
diff --git a/pango/pango-layout.c b/pango/pango-layout.c
index 5aa9ee12..86c67020 100644
--- a/pango/pango-layout.c
+++ b/pango/pango-layout.c
@@ -7305,6 +7305,22 @@ pango_layout_iter_get_baseline (PangoLayoutIter *iter)
   return iter->line_extents[iter->line_index].baseline;
 }
 
+int
+pango_layout_iter_get_run_baseline (PangoLayoutIter *iter)
+{
+  ItemProperties properties;
+
+  if (ITER_IS_INVALID (iter))
+    return 0;
+
+  if (!iter->run)
+    return iter->line_extents[iter->line_index].baseline;
+
+  pango_layout_get_item_properties (iter->run->item, &properties);
+
+  return iter->line_extents[iter->line_index].baseline - properties.rise;
+}
+
 /**
  * pango_layout_iter_get_layout_extents:
  * @iter: a `PangoLayoutIter`
diff --git a/pango/pango-layout.h b/pango/pango-layout.h
index 3b30a251..e28f9295 100644
--- a/pango/pango-layout.h
+++ b/pango/pango-layout.h
@@ -466,6 +466,8 @@ void pango_layout_iter_get_layout_extents  (PangoLayoutIter *iter,
                                            PangoRectangle  *logical_rect);
 PANGO_AVAILABLE_IN_ALL
 int  pango_layout_iter_get_baseline        (PangoLayoutIter *iter);
+PANGO_AVAILABLE_IN_1_50
+int  pango_layout_iter_get_run_baseline    (PangoLayoutIter *iter);
 
 G_END_DECLS