blob: efde8691d0994f2bb4b81bb11ef0d6515a472edb [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/client/ui/fling_animation.h"
#include "base/time/default_tick_clock.h"
namespace remoting {
FlingAnimation::FlingAnimation(float time_constant,
const FlingCallback& fling_callback)
: fling_tracker_(time_constant),
fling_callback_(fling_callback),
clock_(base::DefaultTickClock::GetInstance()) {}
FlingAnimation::~FlingAnimation() = default;
void FlingAnimation::SetVelocity(float velocity_x, float velocity_y) {
fling_tracker_.StartFling(velocity_x, velocity_y);
fling_start_time_ = clock_->NowTicks();
}
bool FlingAnimation::IsAnimationInProgress() const {
return fling_tracker_.IsFlingInProgress();
}
void FlingAnimation::Tick() {
if (!IsAnimationInProgress()) {
return;
}
float dx, dy;
bool in_progress = fling_tracker_.TrackMovement(
clock_->NowTicks() - fling_start_time_, &dx, &dy);
if (in_progress) {
fling_callback_.Run(dx, dy);
}
}
void FlingAnimation::Abort() {
fling_tracker_.StopFling();
}
void FlingAnimation::SetTickClockForTest(base::TickClock* clock) {
clock_ = clock;
}
} // namespace remoting