| /* |
| * Copyright (C) 2014-2015 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. |
| */ |
| |
| #pragma once |
| |
| #if ENABLE(ASYNC_SCROLLING) |
| |
| #include "MessageReceiver.h" |
| #include "RemoteScrollingCoordinator.h" |
| #include "RemoteScrollingTree.h" |
| #include <WebCore/GraphicsLayer.h> |
| #include <wtf/Noncopyable.h> |
| #include <wtf/RefPtr.h> |
| |
| namespace WebCore { |
| class FloatPoint; |
| class PlatformWheelEvent; |
| } |
| |
| namespace WebKit { |
| |
| class RemoteLayerTreeHost; |
| class RemoteScrollingCoordinatorTransaction; |
| class RemoteScrollingTree; |
| class WebPageProxy; |
| |
| class RemoteScrollingCoordinatorProxy { |
| WTF_MAKE_NONCOPYABLE(RemoteScrollingCoordinatorProxy); |
| public: |
| explicit RemoteScrollingCoordinatorProxy(WebPageProxy&); |
| virtual ~RemoteScrollingCoordinatorProxy(); |
| |
| // Inform the web process that the scroll position changed (called from the scrolling tree) |
| void scrollingTreeNodeDidScroll(WebCore::ScrollingNodeID, const WebCore::FloatPoint& newScrollPosition, const Optional<WebCore::FloatPoint>& layoutViewportOrigin, WebCore::ScrollingLayerPositionAction); |
| void scrollingTreeNodeRequestsScroll(WebCore::ScrollingNodeID, const WebCore::FloatPoint& scrollPosition, bool representsProgrammaticScroll); |
| |
| WebCore::TrackingType eventTrackingTypeForPoint(const AtomicString& eventName, WebCore::IntPoint) const; |
| |
| // Called externally when native views move around. |
| void viewportChangedViaDelegatedScrolling(const WebCore::FloatPoint& scrollPosition, const WebCore::FloatRect& layoutViewport, double scale); |
| |
| void applyScrollingTreeLayerPositions(); |
| |
| void currentSnapPointIndicesDidChange(WebCore::ScrollingNodeID, unsigned horizontal, unsigned vertical); |
| |
| // FIXME: expose the tree and pass this to that? |
| bool handleWheelEvent(const WebCore::PlatformWheelEvent&); |
| void handleMouseEvent(const WebCore::PlatformMouseEvent&); |
| |
| WebCore::ScrollingNodeID rootScrollingNodeID() const; |
| |
| const RemoteLayerTreeHost* layerTreeHost() const; |
| WebPageProxy& webPageProxy() const { return m_webPageProxy; } |
| |
| struct RequestedScrollInfo { |
| bool requestsScrollPositionUpdate { }; |
| bool requestIsProgrammaticScroll { }; |
| WebCore::FloatPoint requestedScrollPosition; |
| }; |
| void commitScrollingTreeState(const RemoteScrollingCoordinatorTransaction&, RequestedScrollInfo&); |
| |
| void setPropagatesMainFrameScrolls(bool propagatesMainFrameScrolls) { m_propagatesMainFrameScrolls = propagatesMainFrameScrolls; } |
| bool propagatesMainFrameScrolls() const { return m_propagatesMainFrameScrolls; } |
| bool hasFixedOrSticky() const { return m_scrollingTree->hasFixedOrSticky(); } |
| bool hasScrollableMainFrame() const; |
| |
| #if PLATFORM(IOS_FAMILY) |
| WebCore::FloatRect currentLayoutViewport() const; |
| void scrollingTreeNodeWillStartPanGesture(); |
| void scrollingTreeNodeWillStartScroll(); |
| void scrollingTreeNodeDidEndScroll(); |
| #if ENABLE(CSS_SCROLL_SNAP) |
| void adjustTargetContentOffsetForSnapping(CGSize maxScrollDimensions, CGPoint velocity, CGFloat topInset, CGPoint* targetContentOffset); |
| bool hasActiveSnapPoint() const; |
| CGPoint nearestActiveContentInsetAdjustedSnapPoint(CGFloat topInset, const CGPoint&) const; |
| bool shouldSetScrollViewDecelerationRateFast() const; |
| #endif |
| #endif |
| |
| String scrollingTreeAsText() const; |
| |
| #if ENABLE(POINTER_EVENTS) |
| OptionSet<WebCore::TouchAction> activeTouchActionsForTouchIdentifier(unsigned touchIdentifier) const; |
| void setTouchActionsForTouchIdentifier(OptionSet<WebCore::TouchAction>, unsigned); |
| void clearTouchActionsForTouchIdentifier(unsigned); |
| #endif |
| |
| private: |
| void connectStateNodeLayers(WebCore::ScrollingStateTree&, const RemoteLayerTreeHost&); |
| void establishLayerTreeScrollingRelations(const RemoteLayerTreeHost&); |
| |
| #if ENABLE(CSS_SCROLL_SNAP) |
| bool shouldSnapForMainFrameScrolling(WebCore::ScrollEventAxis) const; |
| float closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis, float scrollDestination, float velocity, unsigned& closestIndex) const; |
| #endif |
| |
| WebPageProxy& m_webPageProxy; |
| RefPtr<RemoteScrollingTree> m_scrollingTree; |
| #if ENABLE(POINTER_EVENTS) |
| HashMap<unsigned, OptionSet<WebCore::TouchAction>> m_touchActionsByTouchIdentifier; |
| #endif |
| RequestedScrollInfo* m_requestedScrollInfo; |
| #if ENABLE(CSS_SCROLL_SNAP) |
| unsigned m_currentHorizontalSnapPointIndex { 0 }; |
| unsigned m_currentVerticalSnapPointIndex { 0 }; |
| #endif |
| bool m_propagatesMainFrameScrolls; |
| HashSet<WebCore::GraphicsLayer::PlatformLayerID> m_layersWithScrollingRelations; |
| }; |
| |
| } // namespace WebKit |
| |
| #endif // ENABLE(ASYNC_SCROLLING) |