elm_interface_scrollable: fix last page get api

Summary: First page's number is 0. So I changed '+' to '-'.

Reviewers: seoz, jaehwan, Hermet

Reviewed By: Hermet

Differential Revision: https://phab.enlightenment.org/D1530

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/elm_interface_scrollable.c b/src/lib/elm_interface_scrollable.c
index c1793a70a..3c8db9229 100644
--- a/src/lib/elm_interface_scrollable.c
+++ b/src/lib/elm_interface_scrollable.c
@@ -4181,14 +4181,14 @@ _elm_interface_scrollable_last_page_get(Eo *obj EINA_UNUSED, Elm_Scrollable_Smar
    if (pagenumber_h)
      {
         if (sid->pagesize_h > 0)
-          *pagenumber_h = cw / sid->pagesize_h + 1;
+          *pagenumber_h = cw / sid->pagesize_h - 1;
         else
           *pagenumber_h = 0;
      }
    if (pagenumber_v)
      {
         if (sid->pagesize_v > 0)
-          *pagenumber_v = ch / sid->pagesize_v + 1;
+          *pagenumber_v = ch / sid->pagesize_v - 1;
         else
           *pagenumber_v = 0;
      }