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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/184529">184529</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2015-05-18 17:09:26 -0700 (Mon, 18 May 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/184439">r184439</a>. rdar://problem/20975978</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari601132branchSourceWebKit2ChangeLog">branches/safari-601.1.32-branch/Source/WebKit2/ChangeLog</a></li>
<li><a href="#branchessafari601132branchSourceWebKit2UIProcessAPICocoaWKWebViewmm">branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm</a></li>
<li><a href="#branchessafari601132branchSourceWebKit2UIProcessScrollingRemoteScrollingCoordinatorProxyh">branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/Scrolling/RemoteScrollingCoordinatorProxy.h</a></li>
<li><a href="#branchessafari601132branchSourceWebKit2UIProcessiosRemoteScrollingCoordinatorProxyIOSmm">branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari601132branchSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebKit2/ChangeLog (184528 => 184529)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebKit2/ChangeLog 2015-05-19 00:09:16 UTC (rev 184528)
+++ branches/safari-601.1.32-branch/Source/WebKit2/ChangeLog 2015-05-19 00:09:26 UTC (rev 184529)
</span><span class="lines">@@ -1,5 +1,37 @@
</span><span class="cx"> 2015-05-18 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><ins>+ Merge r184439. rdar://problem/20975978
+
+ 2015-05-16 Brent Fulgham <bfulgham@apple.com>
+
+ [iOS] Remote scrolling tree needs to coordinate scroll snap state during resize/rotations
+ https://bugs.webkit.org/show_bug.cgi?id=145059
+ <rdar://problem/20975978>
+
+ Reviewed by Simon Fraser.
+
+ The web view needs to update its scroll snap point offsets to take into account any
+ adjustments to the view size caused by content insets. We also need to update the
+ offstes after device rotation.
+
+ * UIProcess/API/Cocoa/WKWebView.mm:
+ (-[WKWebView scrollViewWillEndDragging:withVelocity:targetContentOffset:]): Retrieve the proper
+ computed content inset for the view and incorporate into any scroll snap point adjustments.
+ (-[WKWebView _updateVisibleContentRects]): If we have active scroll snap points,
+ * UIProcess/Scrolling/RemoteScrollingCoordinatorProxy.h:
+ * UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm:
+ (WebKit::RemoteScrollingCoordinatorProxy::adjustTargetContentOffsetForSnapping): Update to account
+ for content inset.
+ (WebKit::RemoteScrollingCoordinatorProxy::shouldSnapForMainFrameScrolling): Also validate that the
+ active index is valid.
+ (WebKit::RemoteScrollingCoordinatorProxy::closestSnapOffsetForMainFrameScrolling): Update to track
+ current active snap offset index.
+ (WebKit::RemoteScrollingCoordinatorProxy::hasActiveSnapPoint): Added.
+ (WebKit::RemoteScrollingCoordinatorProxy::nearestActiveSnapPoint): Added. It calculates the proper
+ scroll position incorporating any snap point and content insets.
+
+2015-05-18 Matthew Hanson <matthew_hanson@apple.com>
+
</ins><span class="cx"> Merge r184358. rdar://problem/19790341
</span><span class="cx">
</span><span class="cx"> 2015-05-14 Timothy Horton <timothy_horton@apple.com>
</span></span></pre></div>
<a id="branchessafari601132branchSourceWebKit2UIProcessAPICocoaWKWebViewmm"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm (184528 => 184529)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm 2015-05-19 00:09:16 UTC (rev 184528)
+++ branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm 2015-05-19 00:09:26 UTC (rev 184529)
</span><span class="lines">@@ -1402,7 +1402,11 @@
</span><span class="cx"> if (WebKit::RemoteScrollingCoordinatorProxy* coordinator = _page->scrollingCoordinatorProxy()) {
</span><span class="cx"> // FIXME: Here, I'm finding the maximum horizontal/vertical scroll offsets. There's probably a better way to do this.
</span><span class="cx"> CGSize maxScrollOffsets = CGSizeMake(scrollView.contentSize.width - scrollView.bounds.size.width, scrollView.contentSize.height - scrollView.bounds.size.height);
</span><del>- coordinator->adjustTargetContentOffsetForSnapping(maxScrollOffsets, velocity, targetContentOffset);
</del><ins>+
+ CGRect fullViewRect = self.bounds;
+ CGRect unobscuredRect = UIEdgeInsetsInsetRect(fullViewRect, [self _computedContentInset]);
+
+ coordinator->adjustTargetContentOffsetForSnapping(maxScrollOffsets, velocity, unobscuredRect.origin.y, targetContentOffset);
</ins><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="lines">@@ -1522,6 +1526,26 @@
</span><span class="cx"> if (isStableState && [_scrollView respondsToSelector:@selector(_isInterruptingDeceleration)])
</span><span class="cx"> isStableState = ![_scrollView performSelector:@selector(_isInterruptingDeceleration)];
</span><span class="cx">
</span><ins>+#if ENABLE(CSS_SCROLL_SNAP) && ENABLE(ASYNC_SCROLLING)
+ if (isStableState) {
+ WebKit::RemoteScrollingCoordinatorProxy* coordinator = _page->scrollingCoordinatorProxy();
+ if (coordinator && coordinator->hasActiveSnapPoint()) {
+ CGRect fullViewRect = self.bounds;
+ CGRect unobscuredRect = UIEdgeInsetsInsetRect(fullViewRect, [self _computedContentInset]);
+
+ CGPoint currentPoint = [_scrollView contentOffset];
+ CGPoint activePoint = coordinator->nearestActiveContentInsetAdjustedSnapPoint(unobscuredRect.origin.y, currentPoint);
+
+ if (!CGPointEqualToPoint(activePoint, currentPoint)) {
+ RetainPtr<WKScrollView> strongScrollView = _scrollView;
+ dispatch_async(dispatch_get_main_queue(), [strongScrollView, activePoint] {
+ [strongScrollView setContentOffset:activePoint animated:NO];
+ });
+ }
+ }
+ }
+#endif
+
</ins><span class="cx"> [_contentView didUpdateVisibleRect:visibleRectInContentCoordinates
</span><span class="cx"> unobscuredRect:unobscuredRectInContentCoordinates
</span><span class="cx"> unobscuredRectInScrollViewCoordinates:unobscuredRect
</span></span></pre></div>
<a id="branchessafari601132branchSourceWebKit2UIProcessScrollingRemoteScrollingCoordinatorProxyh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/Scrolling/RemoteScrollingCoordinatorProxy.h (184528 => 184529)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/Scrolling/RemoteScrollingCoordinatorProxy.h 2015-05-19 00:09:16 UTC (rev 184528)
+++ branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/Scrolling/RemoteScrollingCoordinatorProxy.h 2015-05-19 00:09:26 UTC (rev 184529)
</span><span class="lines">@@ -1,5 +1,5 @@
</span><span class="cx"> /*
</span><del>- * Copyright (C) 2014 Apple Inc. All rights reserved.
</del><ins>+ * Copyright (C) 2014-2015 Apple Inc. All rights reserved.
</ins><span class="cx"> *
</span><span class="cx"> * Redistribution and use in source and binary forms, with or without
</span><span class="cx"> * modification, are permitted provided that the following conditions
</span><span class="lines">@@ -85,7 +85,9 @@
</span><span class="cx"> void scrollingTreeNodeWillStartScroll();
</span><span class="cx"> void scrollingTreeNodeDidEndScroll();
</span><span class="cx"> #if ENABLE(CSS_SCROLL_SNAP)
</span><del>- void adjustTargetContentOffsetForSnapping(CGSize maxScrollDimensions, CGPoint velocity, CGPoint* targetContentOffset) const;
</del><ins>+ void adjustTargetContentOffsetForSnapping(CGSize maxScrollDimensions, CGPoint velocity, CGFloat topInset, CGPoint* targetContentOffset);
+ bool hasActiveSnapPoint() const;
+ CGPoint nearestActiveContentInsetAdjustedSnapPoint(CGFloat topInset, const CGPoint&) const;
</ins><span class="cx"> bool shouldSetScrollViewDecelerationRateFast() const;
</span><span class="cx"> #endif
</span><span class="cx"> #endif
</span><span class="lines">@@ -94,12 +96,16 @@
</span><span class="cx"> void connectStateNodeLayers(WebCore::ScrollingStateTree&, const RemoteLayerTreeHost&);
</span><span class="cx"> #if ENABLE(CSS_SCROLL_SNAP)
</span><span class="cx"> bool shouldSnapForMainFrameScrolling(WebCore::ScrollEventAxis) const;
</span><del>- float closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis, float scrollDestination, float velocity) const;
</del><ins>+ float closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis, float scrollDestination, float velocity, unsigned& closestIndex) const;
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> WebPageProxy& m_webPageProxy;
</span><span class="cx"> RefPtr<RemoteScrollingTree> m_scrollingTree;
</span><span class="cx"> RequestedScrollInfo* m_requestedScrollInfo;
</span><ins>+#if ENABLE(CSS_SCROLL_SNAP)
+ unsigned m_currentHorizontalSnapPointIndex { 0 };
+ unsigned m_currentVerticalSnapPointIndex { 0 };
+#endif
</ins><span class="cx"> bool m_propagatesMainFrameScrolls;
</span><span class="cx"> };
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari601132branchSourceWebKit2UIProcessiosRemoteScrollingCoordinatorProxyIOSmm"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm (184528 => 184529)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm 2015-05-19 00:09:16 UTC (rev 184528)
+++ branches/safari-601.1.32-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm 2015-05-19 00:09:26 UTC (rev 184529)
</span><span class="lines">@@ -1,5 +1,5 @@
</span><span class="cx"> /*
</span><del>- * Copyright (C) 2014 Apple Inc. All rights reserved.
</del><ins>+ * Copyright (C) 2014-2015 Apple Inc. All rights reserved.
</ins><span class="cx"> *
</span><span class="cx"> * Redistribution and use in source and binary forms, with or without
</span><span class="cx"> * modification, are permitted provided that the following conditions
</span><span class="lines">@@ -113,16 +113,17 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> #if ENABLE(CSS_SCROLL_SNAP)
</span><del>-void RemoteScrollingCoordinatorProxy::adjustTargetContentOffsetForSnapping(CGSize maxScrollOffsets, CGPoint velocity, CGPoint* targetContentOffset) const
</del><ins>+void RemoteScrollingCoordinatorProxy::adjustTargetContentOffsetForSnapping(CGSize maxScrollOffsets, CGPoint velocity, CGFloat topInset, CGPoint* targetContentOffset)
</ins><span class="cx"> {
</span><span class="cx"> // The bounds checking with maxScrollOffsets is to ensure that we won't interfere with rubber-banding when scrolling to the edge of the page.
</span><span class="cx"> if (shouldSnapForMainFrameScrolling(WebCore::ScrollEventAxis::Horizontal) && targetContentOffset->x > 0 && targetContentOffset->x < maxScrollOffsets.width) {
</span><del>- float potentialSnapPosition = closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis::Horizontal, targetContentOffset->x, velocity.x);
</del><ins>+ float potentialSnapPosition = closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis::Horizontal, targetContentOffset->x, velocity.x, m_currentHorizontalSnapPointIndex);
</ins><span class="cx"> targetContentOffset->x = std::min<float>(maxScrollOffsets.width, potentialSnapPosition);
</span><span class="cx"> }
</span><del>- // FIXME: We need to account for how the top navigation bar changes in size.
</del><ins>+
</ins><span class="cx"> if (shouldSnapForMainFrameScrolling(WebCore::ScrollEventAxis::Vertical) && targetContentOffset->y > 0 && targetContentOffset->y < maxScrollOffsets.height) {
</span><del>- float potentialSnapPosition = closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis::Vertical, targetContentOffset->y, velocity.y);
</del><ins>+ float potentialSnapPosition = closestSnapOffsetForMainFrameScrolling(WebCore::ScrollEventAxis::Vertical, targetContentOffset->y, velocity.y, m_currentVerticalSnapPointIndex);
+ potentialSnapPosition -= topInset;
</ins><span class="cx"> targetContentOffset->y = std::min<float>(maxScrollOffsets.height, potentialSnapPosition);
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="lines">@@ -138,23 +139,71 @@
</span><span class="cx"> if (root && root->isFrameScrollingNode()) {
</span><span class="cx"> ScrollingTreeFrameScrollingNode* rootFrame = static_cast<ScrollingTreeFrameScrollingNode*>(root);
</span><span class="cx"> const Vector<float>& snapOffsets = axis == ScrollEventAxis::Horizontal ? rootFrame->horizontalSnapOffsets() : rootFrame->verticalSnapOffsets();
</span><del>- return snapOffsets.size() > 0;
</del><ins>+ unsigned currentIndex = axis == ScrollEventAxis::Horizontal ? m_currentHorizontalSnapPointIndex : m_currentVerticalSnapPointIndex;
+ return (snapOffsets.size() > 0) && (currentIndex < snapOffsets.size());
</ins><span class="cx"> }
</span><span class="cx"> return false;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-float RemoteScrollingCoordinatorProxy::closestSnapOffsetForMainFrameScrolling(ScrollEventAxis axis, float scrollDestination, float velocity) const
</del><ins>+float RemoteScrollingCoordinatorProxy::closestSnapOffsetForMainFrameScrolling(ScrollEventAxis axis, float scrollDestination, float velocity, unsigned& currentIndex) const
</ins><span class="cx"> {
</span><span class="cx"> ScrollingTreeNode* root = m_scrollingTree->rootNode();
</span><span class="cx"> ASSERT(root && root->isFrameScrollingNode());
</span><span class="cx"> ScrollingTreeFrameScrollingNode* rootFrame = static_cast<ScrollingTreeFrameScrollingNode*>(root);
</span><span class="cx"> const Vector<float>& snapOffsets = axis == ScrollEventAxis::Horizontal ? rootFrame->horizontalSnapOffsets() : rootFrame->verticalSnapOffsets();
</span><span class="cx">
</span><del>- unsigned ignore = 0;
</del><span class="cx"> float scaledScrollDestination = scrollDestination / m_webPageProxy.displayedContentScale();
</span><del>- float rawClosestSnapOffset = closestSnapOffset<float, float>(snapOffsets, scaledScrollDestination, velocity, ignore);
</del><ins>+ float rawClosestSnapOffset = closestSnapOffset<float, float>(snapOffsets, scaledScrollDestination, velocity, currentIndex);
</ins><span class="cx"> return rawClosestSnapOffset * m_webPageProxy.displayedContentScale();
</span><span class="cx"> }
</span><ins>+
+bool RemoteScrollingCoordinatorProxy::hasActiveSnapPoint() const
+{
+ ScrollingTreeNode* root = m_scrollingTree->rootNode();
+ if (!root)
+ return false;
+
+ if (!is<ScrollingTreeFrameScrollingNode>(root))
+ return false;
+
+ ScrollingTreeFrameScrollingNode& rootFrame = downcast<ScrollingTreeFrameScrollingNode>(*root);
+ const Vector<float>& horizontal = rootFrame.horizontalSnapOffsets();
+ const Vector<float>& vertical = rootFrame.verticalSnapOffsets();
+
+ if (horizontal.isEmpty() && vertical.isEmpty())
+ return false;
+
+ if ((!horizontal.isEmpty() && m_currentHorizontalSnapPointIndex >= horizontal.size())
+ || (!vertical.isEmpty() && m_currentVerticalSnapPointIndex >= vertical.size())) {
+ return false;
+ }
+
+ return true;
+}
+
+CGPoint RemoteScrollingCoordinatorProxy::nearestActiveContentInsetAdjustedSnapPoint(CGFloat topInset, const CGPoint& currentPoint) const
+{
+ CGPoint activePoint = currentPoint;
+
+ ScrollingTreeNode* root = m_scrollingTree->rootNode();
+ ASSERT(root && is<ScrollingTreeFrameScrollingNode>(root));
+ ScrollingTreeFrameScrollingNode& rootFrame = downcast<ScrollingTreeFrameScrollingNode>(*root);
+ const Vector<float>& horizontal = rootFrame.horizontalSnapOffsets();
+ const Vector<float>& vertical = rootFrame.verticalSnapOffsets();
+
+ // The bounds checking with maxScrollOffsets is to ensure that we won't interfere with rubber-banding when scrolling to the edge of the page.
+ if (!horizontal.isEmpty() && m_currentHorizontalSnapPointIndex < horizontal.size())
+ activePoint.x = horizontal[m_currentHorizontalSnapPointIndex] * m_webPageProxy.displayedContentScale();
+
+ if (!vertical.isEmpty() && m_currentVerticalSnapPointIndex < vertical.size()) {
+ float potentialSnapPosition = vertical[m_currentVerticalSnapPointIndex] * m_webPageProxy.displayedContentScale();
+ potentialSnapPosition -= topInset;
+ activePoint.y = potentialSnapPosition;
+ }
+
+ return activePoint;
+}
+
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> } // namespace WebKit
</span></span></pre>
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