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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 ScrollAnimationBezierPhysicsSettings SettingsForDeltaType(
ScrollWheelInput::ScrollDeltaType aDeltaType) {
int32_t minMS = 0;
int32_t maxMS = 0;
switch (aDeltaType) {
case ScrollWheelInput::SCROLLDELTA_PAGE:
maxMS = clamped(StaticPrefs::general_smoothScroll_pages_durationMaxMS(),
0, 10000);
minMS = clamped(StaticPrefs::general_smoothScroll_pages_durationMinMS(),
0, maxMS);
break;
case ScrollWheelInput::SCROLLDELTA_PIXEL:
maxMS = clamped(StaticPrefs::general_smoothScroll_pixels_durationMaxMS(),
0, 10000);
minMS = clamped(StaticPrefs::general_smoothScroll_pixels_durationMinMS(),
0, maxMS);
break;
case ScrollWheelInput::SCROLLDELTA_LINE:
std::tie(minMS, maxMS) = apz::GetMouseWheelAnimationDurations();
maxMS = clamped(maxMS, 0, 10000);
minMS = clamped(minMS, 0, maxMS);
break;
}
// The pref is 100-based int percentage, while mIntervalRatio is 1-based ratio
double intervalRatio =
((double)StaticPrefs::general_smoothScroll_durationToIntervalRatio()) /
100.0;
intervalRatio = std::max(1.0, intervalRatio);
return ScrollAnimationBezierPhysicsSettings{minMS, maxMS, intervalRatio};
}
WheelScrollAnimation::WheelScrollAnimation(
AsyncPanZoomController& aApzc, const nsPoint& aInitialPosition,
ScrollWheelInput::ScrollDeltaType aDeltaType)
: GenericScrollAnimation(aApzc, aInitialPosition,
SettingsForDeltaType(aDeltaType)) {
mDirectionForcedToOverscroll =
mApzc.mScrollMetadata.GetDisregardedDirection();
}
} // namespace layers
} // namespace mozilla
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