fix off by one error on unity gain line

git-svn-id: svn://localhost/ardour2/trunk@1153 d708f5d6-7413-0410-9779-e7cbd77b26cf

diff --git a/libs/gtkmm2ext/pixfader.cc b/libs/gtkmm2ext/pixfader.cc
index aebcd7d1b31cec55ccc138b4cd226ed7511e33a0..f0ba652052f7dd37d484f9289cb93eaa16a52116 100644 (file)
--- a/libs/gtkmm2ext/pixfader.cc
+++ b/libs/gtkmm2ext/pixfader.cc
@@ -41,7 +41,7 @@ PixFader::PixFader (Glib::RefPtr<Pixbuf> belt, Gtk::Adjustment& adj)
        view.width = pixbuf->get_width();
        view.height = pixheight / 2;
 
-       unity_y = (int) rint (view.height - (default_value * view.height));
+       unity_y = (int) rint (view.height - (default_value * view.height)) - 1;
 
        add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);