[pyatspi2] Add ScrollSubstringTo and ScrollSubstringToPoint text interfaces

[Samuel Thibault <sthibaul src gnome org>]

commit 5125757dc4fd2f2044619de7492f151952d0bc86
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Wed Jun 27 15:45:22 2018 +0200

    Add ScrollSubstringTo and ScrollSubstringToPoint text interfaces

 NEWS            |  4 ++++
 pyatspi/text.py | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)
---
diff --git a/NEWS b/NEWS
index e5da640..7c2ef62 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+What's new in pyatspi 2.31.2:
+
+* Add ScrollSubstringTo and ScrollSubstringToPoint text interfaces.
+
 What's new in pyatspi 2.31.1:
 
 * Add support for locking/unlocking modifiers.
diff --git a/pyatspi/text.py b/pyatspi/text.py
index 1f0c1f2..837e3c1 100644
--- a/pyatspi/text.py
+++ b/pyatspi/text.py
@@ -586,6 +586,22 @@ class Text(interface):
                 """
         characterCount = property(fget=get_characterCount, doc=_characterCountDoc)
 
+        def scrollSubstringTo(self, startOffset, endOffset, scroll_type):
+                """
+                Makes the text range visible on the screen at a given position by
+                scrolling all necessary parents.
+                @return True if scrolling was successful.
+                """
+                return Atspi.Text.scroll_substring_to(self.obj, startOffset, endOffset, scroll_type)
+
+        def scrollSubstringToPoint(self, startOffset, endOffset, coord_type, x, y):
+                """
+                Makes the text range visible on the screen at a given position by
+                scrolling all necessary parents.
+                @return True if scrolling was successful.
+                """
+                return Atspi.Text.scroll_substring_to_point(self.obj, startOffset, endOffset, coord_type, x, 
y)
+
 def rangeToList(r):
         return (r.start_offset, r.end_offset)