From 29b32a9dc3db4510d4fae143dd786c75be9a7841 Mon Sep 17 00:00:00 2001
From: itdominator <1itdominator@gmail.com>
Date: Fri, 28 Apr 2023 19:54:09 -0500
Subject: [PATCH] Added additional scroll functionality

---
 src/core/containers/image_view_scroll.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/core/containers/image_view_scroll.py b/src/core/containers/image_view_scroll.py
index 2e920cd..6a1899e 100644
--- a/src/core/containers/image_view_scroll.py
+++ b/src/core/containers/image_view_scroll.py
@@ -130,8 +130,19 @@ class ImageViewScroll(Gtk.ScrolledWindow):
                 adjustment.set_value(current_val - step_val)
             else:             # NOTE: scroll right
                 adjustment.set_value(current_val + step_val)
+        elif event.state & accel_mask == Gdk.ModifierType.SHIFT_MASK:
+            adjustment  = self.get_vadjustment()
+            current_val = adjustment.get_value()
+            step_val    = adjustment.get_step_increment()
+
+            if direction > 0: # NOTE: scroll up
+                adjustment.set_value(current_val + step_val)
+            else:             # NOTE: scroll down
+                adjustment.set_value(current_val - step_val)
         else:
             if direction > 0:
                 event_system.emit("zoom_out")
             else:
                 event_system.emit("zoom_in")
+
+        return True # NOTE: Stop event propigation