| /* |
| * Copyright (C) 2015 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if PLATFORM(MAC) |
| #import "WheelEventDeltaFilterMac.h" |
| |
| #import "FloatPoint.h" |
| #import <pal/spi/mac/NSScrollingInputFilterSPI.h> |
| |
| namespace WebCore { |
| |
| WheelEventDeltaFilterMac::WheelEventDeltaFilterMac() |
| : WheelEventDeltaFilter() |
| , m_predominantAxisFilter(adoptNS([[_NSScrollingPredominantAxisFilter alloc] init])) |
| { |
| } |
| |
| void WheelEventDeltaFilterMac::beginFilteringDeltas() |
| { |
| m_beginFilteringDeltasTime = MonotonicTime::now(); |
| m_isFilteringDeltas = true; |
| } |
| |
| void WheelEventDeltaFilterMac::updateFromDelta(const FloatSize& delta) |
| { |
| if (!m_isFilteringDeltas) |
| return; |
| |
| NSPoint filteredDeltaResult; |
| NSPoint filteredVelocityResult; |
| [m_predominantAxisFilter filterInputDelta:NSPoint(FloatPoint(delta.width(), delta.height())) timestamp:(MonotonicTime::now() - m_beginFilteringDeltasTime).seconds() outputDelta:&filteredDeltaResult velocity:&filteredVelocityResult]; |
| m_currentFilteredVelocity = FloatSize(filteredVelocityResult.x, filteredVelocityResult.y); |
| m_currentFilteredDelta = FloatSize(filteredDeltaResult.x, filteredDeltaResult.y); |
| } |
| |
| void WheelEventDeltaFilterMac::endFilteringDeltas() |
| { |
| m_currentFilteredDelta = FloatSize(0, 0); |
| m_beginFilteringDeltasTime = MonotonicTime(); |
| [m_predominantAxisFilter reset]; |
| m_isFilteringDeltas = false; |
| } |
| |
| } |
| |
| #endif /* PLATFORM(MAC) */ |