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/* -*- 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 "WheelScrollAnimation.h"
#include <tuple>
#include "AsyncPanZoomController.h"
#include "mozilla/StaticPrefs_general.h"
#include "mozilla/layers/APZPublicUtils.h"
#include "nsPoint.h"
#include "ScrollAnimationBezierPhysics.h"
namespace mozilla {
namespace layers {
static ScrollOrigin OriginForDeltaType(
ScrollWheelInput::ScrollDeltaType aDeltaType) {
switch (aDeltaType) {
case ScrollWheelInput::SCROLLDELTA_PAGE:
return ScrollOrigin::Pages;
case ScrollWheelInput::SCROLLDELTA_PIXEL:
return ScrollOrigin::Pixels;
case ScrollWheelInput::SCROLLDELTA_LINE:
return ScrollOrigin::MouseWheel;
}
// Shouldn't happen, pick a default.
return ScrollOrigin::MouseWheel;
}
WheelScrollAnimation::WheelScrollAnimation(
AsyncPanZoomController& aApzc, const nsPoint& aInitialPosition,
ScrollWheelInput::ScrollDeltaType aDeltaType)
: GenericScrollAnimation(aApzc, aInitialPosition,
OriginForDeltaType(aDeltaType)) {
MOZ_ASSERT(StaticPrefs::general_smoothScroll(),
"We shouldn't be creating a WheelScrollAnimation if smooth "
"scrolling is disabled");
mDirectionForcedToOverscroll =
mApzc.mScrollMetadata.GetDisregardedDirection();
}
} // namespace layers
} // namespace mozilla
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