From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/layers/apz/src/AndroidFlingPhysics.h | 45 ++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 gfx/layers/apz/src/AndroidFlingPhysics.h (limited to 'gfx/layers/apz/src/AndroidFlingPhysics.h') diff --git a/gfx/layers/apz/src/AndroidFlingPhysics.h b/gfx/layers/apz/src/AndroidFlingPhysics.h new file mode 100644 index 0000000000..68fb53e804 --- /dev/null +++ b/gfx/layers/apz/src/AndroidFlingPhysics.h @@ -0,0 +1,45 @@ +/* -*- 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/. */ + +#ifndef mozilla_layers_AndroidFlingPhysics_h_ +#define mozilla_layers_AndroidFlingPhysics_h_ + +#include "AsyncPanZoomController.h" +#include "Units.h" +#include "mozilla/Assertions.h" + +namespace mozilla { +namespace layers { + +class AndroidFlingPhysics { + public: + void Init(const ParentLayerPoint& aVelocity, float aPLPPI); + void Sample(const TimeDuration& aDelta, ParentLayerPoint* aOutVelocity, + ParentLayerPoint* aOutOffset); + + static void InitializeGlobalState(); + + private: + // Returns false if the animation should end. + bool SampleImpl(const TimeDuration& aDelta, float* aOutVelocity); + + // Information pertaining to the current fling. + // This is initialized on each call to Init(). + ParentLayerCoord mVelocity; // diagonal velocity (length of velocity vector) + TimeDuration mTargetDuration; + TimeDuration mDurationSoFar; + ParentLayerPoint mLastPos; + ParentLayerPoint mCurrentPos; + ParentLayerCoord mTargetDistance; // diagonal distance + ParentLayerPoint mTargetPos; // really a target *offset* relative to the + // start position, which we don't track + ParentLayerPoint mDeltaNorm; // mTargetPos with length normalized to 1 +}; + +} // namespace layers +} // namespace mozilla + +#endif // mozilla_layers_AndroidFlingPhysics_h_ -- cgit v1.2.3