| /* |
| * Copyright (C) 2019 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. |
| */ |
| |
| #import "config.h" |
| #import "ScrollingTreeOverflowScrollingNodeMac.h" |
| |
| #if ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC) |
| |
| #import "Logging.h" |
| #import "ScrollingStateOverflowScrollingNode.h" |
| #import "ScrollingTree.h" |
| #import "WebCoreCALayerExtras.h" |
| #import <wtf/BlockObjCExceptions.h> |
| #import <wtf/text/TextStream.h> |
| |
| namespace WebCore { |
| |
| Ref<ScrollingTreeOverflowScrollingNodeMac> ScrollingTreeOverflowScrollingNodeMac::create(ScrollingTree& scrollingTree, ScrollingNodeID nodeID) |
| { |
| return adoptRef(*new ScrollingTreeOverflowScrollingNodeMac(scrollingTree, nodeID)); |
| } |
| |
| ScrollingTreeOverflowScrollingNodeMac::ScrollingTreeOverflowScrollingNodeMac(ScrollingTree& scrollingTree, ScrollingNodeID nodeID) |
| : ScrollingTreeOverflowScrollingNode(scrollingTree, nodeID) |
| , m_delegate(*this) |
| { |
| } |
| |
| ScrollingTreeOverflowScrollingNodeMac::~ScrollingTreeOverflowScrollingNodeMac() = default; |
| |
| void ScrollingTreeOverflowScrollingNodeMac::willBeDestroyed() |
| { |
| m_delegate.nodeWillBeDestroyed(); |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::commitStateBeforeChildren(const ScrollingStateNode& stateNode) |
| { |
| ScrollingTreeOverflowScrollingNode::commitStateBeforeChildren(stateNode); |
| m_delegate.updateFromStateNode(downcast<ScrollingStateOverflowScrollingNode>(stateNode)); |
| } |
| |
| WheelEventHandlingResult ScrollingTreeOverflowScrollingNodeMac::handleWheelEvent(const PlatformWheelEvent& wheelEvent, EventTargeting eventTargeting) |
| { |
| #if ENABLE(SCROLLING_THREAD) |
| if (hasSynchronousScrollingReasons() && eventTargeting != EventTargeting::NodeOnly) |
| return { { WheelEventProcessingSteps::MainThreadForScrolling, WheelEventProcessingSteps::MainThreadForNonBlockingDOMEventDispatch }, false }; |
| #endif |
| |
| if (!canHandleWheelEvent(wheelEvent, eventTargeting)) |
| return WheelEventHandlingResult::unhandled(); |
| |
| return WheelEventHandlingResult::result(m_delegate.handleWheelEvent(wheelEvent)); |
| } |
| |
| bool ScrollingTreeOverflowScrollingNodeMac::startAnimatedScrollToPosition(FloatPoint destinationPosition) |
| { |
| bool started = m_delegate.startAnimatedScrollToPosition(destinationPosition); |
| if (started) |
| willStartAnimatedScroll(); |
| return started; |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::stopAnimatedScroll() |
| { |
| m_delegate.stopAnimatedScroll(); |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::willDoProgrammaticScroll(const FloatPoint& targetScrollPosition) |
| { |
| m_delegate.willDoProgrammaticScroll(targetScrollPosition); |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::currentScrollPositionChanged(ScrollType scrollType, ScrollingLayerPositionAction action) |
| { |
| ScrollingTreeOverflowScrollingNode::currentScrollPositionChanged(scrollType, action); |
| m_delegate.currentScrollPositionChanged(); |
| } |
| |
| FloatPoint ScrollingTreeOverflowScrollingNodeMac::adjustedScrollPosition(const FloatPoint& position, ScrollClamping clamp) const |
| { |
| FloatPoint scrollPosition(roundf(position.x()), roundf(position.y())); |
| return ScrollingTreeOverflowScrollingNode::adjustedScrollPosition(scrollPosition, clamp); |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::repositionScrollingLayers() |
| { |
| BEGIN_BLOCK_OBJC_EXCEPTIONS |
| [static_cast<CALayer*>(scrollContainerLayer()) _web_setLayerBoundsOrigin:currentScrollOffset()]; |
| END_BLOCK_OBJC_EXCEPTIONS |
| } |
| |
| void ScrollingTreeOverflowScrollingNodeMac::repositionRelatedLayers() |
| { |
| m_delegate.updateScrollbarPainters(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC) |