Compute snap offsets (both repeat and element based)

Source/core/layout/LayoutObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 57 matching lines @@
 #include "core/layout/LayoutScrollbarPart.h"
 #include "core/layout/LayoutTableCaption.h"
 #include "core/layout/LayoutTableCell.h"
 #include "core/layout/LayoutTableCol.h"
 #include "core/layout/LayoutTableRow.h"
 #include "core/layout/LayoutTheme.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/compositing/DeprecatedPaintLayerCompositor.h"
 #include "core/page/AutoscrollController.h"
 #include "core/page/Page.h"
+#include "core/page/scrolling/SnapCoordinator.h"
 #include "core/paint/DeprecatedPaintLayer.h"
 #include "core/paint/ObjectPainter.h"
 #include "core/style/ContentData.h"
 #include "core/style/ShadowList.h"
 #include "platform/JSONValues.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
 #include "platform/TracedValue.h"
 #include "platform/geometry/TransformState.h"
 #include "platform/graphics/GraphicsContext.h"
@@ skipping 1870 matching lines @@
 
     if (oldStyle && !areCursorsEqual(oldStyle, style())) {
         if (LocalFrame* frame = this->frame()) {
             // Cursor update scheduling is done by the local root, which is the main frame if there
             // are no RemoteFrame ancestors in the frame tree. Use of localFrameRoot() is
             // discouraged but will change when cursor update scheduling is moved from EventHandler
             // to PageEventHandler.
             frame->localFrameRoot()->eventHandler().scheduleCursorUpdate();
         }
     }
+
+    if (SnapCoordinator* snapCoordinator = document().frame()->snapCoordinator())
+        snapCoordinator->styleChanged(node(), oldStyle);

[esprehn, 2015/09/24 17:37:41]

This doesn't belong here, I think you want it in Element::recalcOwnStyle?

[majidvp, 2015/10/15 21:47:02]

Done.

 }
 
 void LayoutObject::propagateStyleToAnonymousChildren(bool blockChildrenOnly)
 {
     // FIXME: We could save this call when the change only affected non-inherited properties.
     for (LayoutObject* child = slowFirstChild(); child; child = child->nextSibling()) {
         if (!child->isAnonymous() || child->style()->styleType() != NOPSEUDO)
             continue;
 
         if (blockChildrenOnly && !child->isLayoutBlock())
@@ skipping 1410 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n");
     }
 }
 
 #endif