Title: [211019] trunk/Source/WebKit/ios
Revision
211019
Author
[email protected]
Date
2017-01-21 17:52:04 -0800 (Sat, 21 Jan 2017)

Log Message

Remove the unused -[WebFixedPositionContent minimumOffsetFromFixedPositionLayersToAnchorEdge:ofRect:inLayer:]
https://bugs.webkit.org/show_bug.cgi?id=167273

Reviewed by Alex Christensen.

This function was added for an experiment, but is no longer used, so remove it.

* WebCoreSupport/WebFixedPositionContent.h:
* WebCoreSupport/WebFixedPositionContent.mm:
(anchorEdgeFlagsForAnchorEdge): Deleted.
(-[WebFixedPositionContent minimumOffsetFromFixedPositionLayersToAnchorEdge:ofRect:inLayer:]): Deleted.

Modified Paths

Diff

Modified: trunk/Source/WebKit/ios/ChangeLog (211018 => 211019)


--- trunk/Source/WebKit/ios/ChangeLog	2017-01-21 22:22:54 UTC (rev 211018)
+++ trunk/Source/WebKit/ios/ChangeLog	2017-01-22 01:52:04 UTC (rev 211019)
@@ -1,3 +1,17 @@
+2017-01-21  Simon Fraser  <[email protected]>
+
+        Remove the unused -[WebFixedPositionContent minimumOffsetFromFixedPositionLayersToAnchorEdge:ofRect:inLayer:]
+        https://bugs.webkit.org/show_bug.cgi?id=167273
+
+        Reviewed by Alex Christensen.
+
+        This function was added for an experiment, but is no longer used, so remove it.
+
+        * WebCoreSupport/WebFixedPositionContent.h:
+        * WebCoreSupport/WebFixedPositionContent.mm:
+        (anchorEdgeFlagsForAnchorEdge): Deleted.
+        (-[WebFixedPositionContent minimumOffsetFromFixedPositionLayersToAnchorEdge:ofRect:inLayer:]): Deleted.
+
 2017-01-15  Darin Adler  <[email protected]>
 
         Remove PassRefPtr from "loader" directory of WebCore

Modified: trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.h (211018 => 211019)


--- trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.h	2017-01-21 22:22:54 UTC (rev 211018)
+++ trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.h	2017-01-22 01:52:04 UTC (rev 211019)
@@ -49,7 +49,5 @@
 - (void)overflowScrollPositionForLayer:(CALayer *)scrollLayer changedTo:(CGPoint)scrollPosition;
 - (void)didFinishScrollingOrZooming;
 - (BOOL)hasFixedOrStickyPositionLayers;
-// Returns CGFLOAT_MAX if there are no layers anchored to the given edge.
-- (CGFloat)minimumOffsetFromFixedPositionLayersToAnchorEdge:(WebFixedPositionAnchorEdge)anchorEdge ofRect:(CGRect)rect inLayer:(CALayer *)layer;
 
 @end

Modified: trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.mm (211018 => 211019)


--- trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.mm	2017-01-21 22:22:54 UTC (rev 211018)
+++ trunk/Source/WebKit/ios/WebCoreSupport/WebFixedPositionContent.mm	2017-01-22 01:52:04 UTC (rev 211019)
@@ -195,60 +195,6 @@
     return !_private->m_viewportConstrainedLayers.isEmpty();
 }
 
-static ViewportConstraints::AnchorEdgeFlags anchorEdgeFlagsForAnchorEdge(WebFixedPositionAnchorEdge edge)
-{
-    switch (edge) {
-    case WebFixedPositionAnchorEdgeLeft:
-        return ViewportConstraints::AnchorEdgeFlags::AnchorEdgeLeft;
-    case WebFixedPositionAnchorEdgeRight:
-        return ViewportConstraints::AnchorEdgeFlags::AnchorEdgeRight;
-    case WebFixedPositionAnchorEdgeTop:
-        return ViewportConstraints::AnchorEdgeFlags::AnchorEdgeTop;
-    case WebFixedPositionAnchorEdgeBottom:
-        return ViewportConstraints::AnchorEdgeFlags::AnchorEdgeBottom;
-    }
-}
-
-- (CGFloat)minimumOffsetFromFixedPositionLayersToAnchorEdge:(WebFixedPositionAnchorEdge)anchorEdge ofRect:(CGRect)rect inLayer:(CALayer *)layer
-{
-    LockHolder lock(WebFixedPositionContentDataLock());
-    ViewportConstraints::AnchorEdgeFlags anchorEdgeFlags = anchorEdgeFlagsForAnchorEdge(anchorEdge);
-    CGFloat minimumOffset = CGFLOAT_MAX;
-    LayerInfoMap::const_iterator end = _private->m_viewportConstrainedLayers.end();
-    for (LayerInfoMap::const_iterator it = _private->m_viewportConstrainedLayers.begin(); it != end; ++it) {
-        CALayer *fixedLayer = it->key.get();
-        ViewportConstrainedLayerData* constraintData = it->value.get();
-        const ViewportConstraints& constraints = *(constraintData->m_viewportConstraints.get());
-
-        if (!constraints.hasAnchorEdge(anchorEdgeFlags))
-            continue;
-        // According to Simon: It's possible that there are windows of time
-        // where these CALayers are unparented (because we've flushed on the web
-        // thread but haven't updated those layers yet).
-        if (![fixedLayer superlayer])
-            continue;
-
-        CGRect fixedLayerExtent = [layer convertRect:[fixedLayer bounds] fromLayer:fixedLayer];
-        CGFloat offset;
-        switch (anchorEdge) {
-        case WebFixedPositionAnchorEdgeLeft:
-            offset = CGRectGetMinX(fixedLayerExtent) - CGRectGetMinX(rect);
-            break;
-        case WebFixedPositionAnchorEdgeRight:
-            offset = CGRectGetMaxX(rect) - CGRectGetMaxX(fixedLayerExtent);
-            break;
-        case WebFixedPositionAnchorEdgeTop:
-            offset = CGRectGetMinY(fixedLayerExtent) - CGRectGetMinY(rect);
-            break;
-        case WebFixedPositionAnchorEdgeBottom:
-            offset = CGRectGetMaxY(rect) - CGRectGetMaxY(fixedLayerExtent);
-            break;
-        }
-        minimumOffset = CGFloatMin(minimumOffset, offset);
-    }
-    return minimumOffset;
-}
-
 @end
 
 #endif // PLATFORM(IOS)
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