webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 329 insertions, 0 deletions

diff --git a/Source/WebCore/page/scrolling/ScrollingStateFrameScrollingNode.cpp b/Source/WebCore/page/scrolling/ScrollingStateFrameScrollingNode.cpp
new file mode 100644
index 000000000..6313c1385
--- /dev/null
+++ b/Source/WebCore/page/scrolling/ScrollingStateFrameScrollingNode.cpp
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 2014, 2016 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"
+#include "ScrollingStateFrameScrollingNode.h"
+
+#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
+
+#include "ScrollingStateTree.h"
+#include "TextStream.h"
+
+namespace WebCore {
+
+Ref<ScrollingStateFrameScrollingNode> ScrollingStateFrameScrollingNode::create(ScrollingStateTree& stateTree, ScrollingNodeID nodeID)
+{
+    return adoptRef(*new ScrollingStateFrameScrollingNode(stateTree, nodeID));
+}
+
+ScrollingStateFrameScrollingNode::ScrollingStateFrameScrollingNode(ScrollingStateTree& stateTree, ScrollingNodeID nodeID)
+    : ScrollingStateScrollingNode(stateTree, FrameScrollingNode, nodeID)
+{
+}
+
+ScrollingStateFrameScrollingNode::ScrollingStateFrameScrollingNode(const ScrollingStateFrameScrollingNode& stateNode, ScrollingStateTree& adoptiveTree)
+    : ScrollingStateScrollingNode(stateNode, adoptiveTree)
+#if PLATFORM(MAC)
+    , m_verticalScrollerImp(stateNode.verticalScrollerImp())
+    , m_horizontalScrollerImp(stateNode.horizontalScrollerImp())
+#endif
+    , m_eventTrackingRegions(stateNode.eventTrackingRegions())
+    , m_requestedScrollPosition(stateNode.requestedScrollPosition())
+    , m_layoutViewport(stateNode.layoutViewport())
+    , m_minLayoutViewportOrigin(stateNode.minLayoutViewportOrigin())
+    , m_maxLayoutViewportOrigin(stateNode.maxLayoutViewportOrigin())
+    , m_frameScaleFactor(stateNode.frameScaleFactor())
+    , m_topContentInset(stateNode.topContentInset())
+    , m_headerHeight(stateNode.headerHeight())
+    , m_footerHeight(stateNode.footerHeight())
+    , m_synchronousScrollingReasons(stateNode.synchronousScrollingReasons())
+    , m_behaviorForFixed(stateNode.scrollBehaviorForFixedElements())
+    , m_requestedScrollPositionRepresentsProgrammaticScroll(stateNode.requestedScrollPositionRepresentsProgrammaticScroll())
+    , m_fixedElementsLayoutRelativeToFrame(stateNode.fixedElementsLayoutRelativeToFrame())
+    , m_visualViewportEnabled(stateNode.visualViewportEnabled())
+{
+    if (hasChangedProperty(ScrolledContentsLayer))
+        setScrolledContentsLayer(stateNode.scrolledContentsLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
+    if (hasChangedProperty(CounterScrollingLayer))
+        setCounterScrollingLayer(stateNode.counterScrollingLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
+    if (hasChangedProperty(InsetClipLayer))
+        setInsetClipLayer(stateNode.insetClipLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
+    if (hasChangedProperty(ContentShadowLayer))
+        setContentShadowLayer(stateNode.contentShadowLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
+    if (hasChangedProperty(HeaderLayer))
+        setHeaderLayer(stateNode.headerLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
+    if (hasChangedProperty(FooterLayer))
+        setFooterLayer(stateNode.footerLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+}
+
+ScrollingStateFrameScrollingNode::~ScrollingStateFrameScrollingNode()
+{
+}
+
+Ref<ScrollingStateNode> ScrollingStateFrameScrollingNode::clone(ScrollingStateTree& adoptiveTree)
+{
+    return adoptRef(*new ScrollingStateFrameScrollingNode(*this, adoptiveTree));
+}
+
+void ScrollingStateFrameScrollingNode::setFrameScaleFactor(float scaleFactor)
+{
+    if (m_frameScaleFactor == scaleFactor)
+        return;
+
+    m_frameScaleFactor = scaleFactor;
+
+    setPropertyChanged(FrameScaleFactor);
+}
+
+void ScrollingStateFrameScrollingNode::setEventTrackingRegions(const EventTrackingRegions& eventTrackingRegions)
+{
+    if (m_eventTrackingRegions == eventTrackingRegions)
+        return;
+
+    m_eventTrackingRegions = eventTrackingRegions;
+    setPropertyChanged(EventTrackingRegion);
+}
+
+void ScrollingStateFrameScrollingNode::setSynchronousScrollingReasons(SynchronousScrollingReasons reasons)
+{
+    if (m_synchronousScrollingReasons == reasons)
+        return;
+
+    m_synchronousScrollingReasons = reasons;
+    setPropertyChanged(ReasonsForSynchronousScrolling);
+}
+
+void ScrollingStateFrameScrollingNode::setScrollBehaviorForFixedElements(ScrollBehaviorForFixedElements behaviorForFixed)
+{
+    if (m_behaviorForFixed == behaviorForFixed)
+        return;
+
+    m_behaviorForFixed = behaviorForFixed;
+    setPropertyChanged(BehaviorForFixedElements);
+}
+
+void ScrollingStateFrameScrollingNode::setLayoutViewport(const FloatRect& r)
+{
+    if (m_layoutViewport == r)
+        return;
+
+    m_layoutViewport = r;
+    setPropertyChanged(LayoutViewport);
+}
+
+void ScrollingStateFrameScrollingNode::setMinLayoutViewportOrigin(const FloatPoint& p)
+{
+    if (m_minLayoutViewportOrigin == p)
+        return;
+
+    m_minLayoutViewportOrigin = p;
+    setPropertyChanged(MinLayoutViewportOrigin);
+}
+
+void ScrollingStateFrameScrollingNode::setMaxLayoutViewportOrigin(const FloatPoint& p)
+{
+    if (m_maxLayoutViewportOrigin == p)
+        return;
+
+    m_maxLayoutViewportOrigin = p;
+    setPropertyChanged(MaxLayoutViewportOrigin);
+}
+
+void ScrollingStateFrameScrollingNode::setHeaderHeight(int headerHeight)
+{
+    if (m_headerHeight == headerHeight)
+        return;
+
+    m_headerHeight = headerHeight;
+    setPropertyChanged(HeaderHeight);
+}
+
+void ScrollingStateFrameScrollingNode::setFooterHeight(int footerHeight)
+{
+    if (m_footerHeight == footerHeight)
+        return;
+
+    m_footerHeight = footerHeight;
+    setPropertyChanged(FooterHeight);
+}
+
+void ScrollingStateFrameScrollingNode::setTopContentInset(float topContentInset)
+{
+    if (m_topContentInset == topContentInset)
+        return;
+
+    m_topContentInset = topContentInset;
+    setPropertyChanged(TopContentInset);
+}
+
+void ScrollingStateFrameScrollingNode::setScrolledContentsLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_scrolledContentsLayer)
+        return;
+    
+    m_scrolledContentsLayer = layerRepresentation;
+    setPropertyChanged(ScrolledContentsLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setCounterScrollingLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_counterScrollingLayer)
+        return;
+    
+    m_counterScrollingLayer = layerRepresentation;
+    setPropertyChanged(CounterScrollingLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setInsetClipLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_insetClipLayer)
+        return;
+    
+    m_insetClipLayer = layerRepresentation;
+    setPropertyChanged(InsetClipLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setContentShadowLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_contentShadowLayer)
+        return;
+    
+    m_contentShadowLayer = layerRepresentation;
+    setPropertyChanged(ContentShadowLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setHeaderLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_headerLayer)
+        return;
+    
+    m_headerLayer = layerRepresentation;
+    setPropertyChanged(HeaderLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setFooterLayer(const LayerRepresentation& layerRepresentation)
+{
+    if (layerRepresentation == m_footerLayer)
+        return;
+    
+    m_footerLayer = layerRepresentation;
+    setPropertyChanged(FooterLayer);
+}
+
+void ScrollingStateFrameScrollingNode::setFixedElementsLayoutRelativeToFrame(bool fixedElementsLayoutRelativeToFrame)
+{
+    if (fixedElementsLayoutRelativeToFrame == m_fixedElementsLayoutRelativeToFrame)
+        return;
+    
+    m_fixedElementsLayoutRelativeToFrame = fixedElementsLayoutRelativeToFrame;
+    setPropertyChanged(FixedElementsLayoutRelativeToFrame);
+}
+
+// Only needed while visual viewports are runtime-switchable.
+void ScrollingStateFrameScrollingNode::setVisualViewportEnabled(bool visualViewportEnabled)
+{
+    if (visualViewportEnabled == m_visualViewportEnabled)
+        return;
+    
+    m_visualViewportEnabled = visualViewportEnabled;
+    setPropertyChanged(VisualViewportEnabled);
+}
+
+#if !PLATFORM(MAC)
+void ScrollingStateFrameScrollingNode::setScrollerImpsFromScrollbars(Scrollbar*, Scrollbar*)
+{
+}
+#endif
+
+void ScrollingStateFrameScrollingNode::dumpProperties(TextStream& ts, int indent, ScrollingStateTreeAsTextBehavior behavior) const
+{
+    ts << "(Frame scrolling node" << "\n";
+    
+    ScrollingStateScrollingNode::dumpProperties(ts, indent, behavior);
+    
+    if (m_frameScaleFactor != 1) {
+        writeIndent(ts, indent + 1);
+        ts << "(frame scale factor " << m_frameScaleFactor << ")\n";
+    }
+    
+    if (m_visualViewportEnabled) {
+        writeIndent(ts, indent + 1);
+        ts << "(layout viewport " << m_layoutViewport << ")\n";
+        writeIndent(ts, indent + 1);
+        ts << "(min layout viewport origin " << m_minLayoutViewportOrigin << ")\n";
+        writeIndent(ts, indent + 1);
+        ts << "(max layout viewport origin " << m_maxLayoutViewportOrigin << ")\n";
+    }
+    
+    if (m_behaviorForFixed == StickToViewportBounds) {
+        writeIndent(ts, indent + 1);
+        ts << "(fixed behavior: stick to viewport)\n";
+    }
+
+    if (!m_eventTrackingRegions.asynchronousDispatchRegion.isEmpty()) {
+        ++indent;
+        writeIndent(ts, indent);
+        ts << "(asynchronous event dispatch region";
+        ++indent;
+        for (auto rect : m_eventTrackingRegions.asynchronousDispatchRegion.rects()) {
+            ts << "\n";
+            writeIndent(ts, indent);
+            ts << rect;
+        }
+        ts << ")\n";
+        indent -= 2;
+    }
+    if (!m_eventTrackingRegions.eventSpecificSynchronousDispatchRegions.isEmpty()) {
+        for (const auto& synchronousEventRegion : m_eventTrackingRegions.eventSpecificSynchronousDispatchRegions) {
+            ++indent;
+            writeIndent(ts, indent);
+            ts << "(synchronous event dispatch region for event " << synchronousEventRegion.key;
+            ++indent;
+            for (auto rect : synchronousEventRegion.value.rects()) {
+                ts << "\n";
+                writeIndent(ts, indent);
+                ts << rect;
+            }
+            ts << ")\n";
+            indent -= 2;
+        }
+    }
+
+    if (m_synchronousScrollingReasons) {
+        writeIndent(ts, indent + 1);
+        ts << "(Scrolling on main thread because: " << ScrollingCoordinator::synchronousScrollingReasonsAsText(m_synchronousScrollingReasons) << ")\n";
+    }
+    
+    // FIXME: dump more properties.
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)