1 files changed, 46 insertions, 0 deletions
diff --git a/gfx/layers/apz/src/SmoothScrollAnimation.cpp b/gfx/layers/apz/src/SmoothScrollAnimation.cpp
new file mode 100644
index 0000000000..266c027a55
--- /dev/null
+++ b/gfx/layers/apz/src/SmoothScrollAnimation.cpp
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SmoothScrollAnimation.h"
+#include "ScrollAnimationBezierPhysics.h"
+#include "mozilla/layers/APZPublicUtils.h"
+
+namespace mozilla {
+namespace layers {
+
+SmoothScrollAnimation::SmoothScrollAnimation(AsyncPanZoomController& aApzc,
+                                             const nsPoint& aInitialPosition,
+                                             ScrollOrigin aOrigin)
+    : GenericScrollAnimation(
+          aApzc, aInitialPosition,
+          apz::ComputeBezierAnimationSettingsForOrigin(aOrigin)),
+      mOrigin(aOrigin) {}
+
+SmoothScrollAnimation* SmoothScrollAnimation::AsSmoothScrollAnimation() {
+  return this;
+}
+
+ScrollOrigin SmoothScrollAnimation::GetScrollOrigin() const { return mOrigin; }
+
+ScrollOrigin SmoothScrollAnimation::GetScrollOriginForAction(
+    KeyboardScrollAction::KeyboardScrollActionType aAction) {
+  switch (aAction) {
+    case KeyboardScrollAction::eScrollCharacter:
+    case KeyboardScrollAction::eScrollLine: {
+      return ScrollOrigin::Lines;
+    }
+    case KeyboardScrollAction::eScrollPage:
+      return ScrollOrigin::Pages;
+    case KeyboardScrollAction::eScrollComplete:
+      return ScrollOrigin::Other;
+    default:
+      MOZ_ASSERT(false, "Unknown keyboard scroll action type");
+      return ScrollOrigin::Other;
+  }
+}
+
+}  // namespace layers
+}  // namespace mozilla