[WIP] CSS Motion Path: offset-anchor and offset-position

third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ skipping 561 matching lines @@
 
 static CSSPrimitiveValue* valueForLineHeight(const ComputedStyle& style)
 {
     Length length = style.lineHeight();
     if (length.isNegative())
         return CSSPrimitiveValue::createIdentifier(CSSValueNormal);
 
     return zoomAdjustedPixelValue(floatValueForLength(length, style.getFontDescription().computedSize()), style);
 }
 
+static CSSValue* valueForOffsetPosition(const LengthPoint& position, const ComputedStyle& style)
+{
+    DCHECK((position.x() == Auto) == (position.y() == Auto));
+    if (position.x() == Auto) {
+        return CSSPrimitiveValue::createIdentifier(CSSValueAuto);
+    }
+    CSSValueList* list = CSSValueList::createSpaceSeparated();
+    list->append(*zoomAdjustedPixelValueForLength(position.x(), style));
+    list->append(*zoomAdjustedPixelValueForLength(position.y(), style));
+    return list;
+}
+
 static CSSValueID identifierForFamily(const AtomicString& family)
 {
     if (family == FontFamilyNames::webkit_cursive)
         return CSSValueCursive;
     if (family == FontFamilyNames::webkit_fantasy)
         return CSSValueFantasy;
     if (family == FontFamilyNames::webkit_monospace)
         return CSSValueMonospace;
     if (family == FontFamilyNames::webkit_pictograph)
         return CSSValueWebkitPictograph;
@@ skipping 1923 matching lines @@
                 box = toLayoutBox(layoutObject)->borderBoxRect();
 
             list->append(*zoomAdjustedPixelValue(minimumValueForLength(style.perspectiveOriginX(), box.width()), style));
             list->append(*zoomAdjustedPixelValue(minimumValueForLength(style.perspectiveOriginY(), box.height()), style));
         } else {
             list->append(*zoomAdjustedPixelValueForLength(style.perspectiveOriginX(), style));
             list->append(*zoomAdjustedPixelValueForLength(style.perspectiveOriginY(), style));
         }
         return list;
     }
+    case CSSPropertyOffsetAnchor:
+        return valueForOffsetPosition(style.offsetAnchor(), style);
+    case CSSPropertyOffsetPosition:
+        return valueForOffsetPosition(style.offsetPosition(), style);
     case CSSPropertyWebkitRtlOrdering:
         return CSSPrimitiveValue::createIdentifier(style.rtlOrdering() ? CSSValueVisual : CSSValueLogical);
     case CSSPropertyWebkitTapHighlightColor:
         return currentColorOrValidColor(style, style.tapHighlightColor());
     case CSSPropertyWebkitUserDrag:
         return CSSPrimitiveValue::create(style.userDrag());
     case CSSPropertyUserSelect:
         return CSSPrimitiveValue::create(style.userSelect());
     case CSSPropertyBorderBottomLeftRadius:
         return &valueForBorderRadiusCorner(style.borderBottomLeftRadius(), style);
@@ skipping 170 matching lines @@
     case CSSPropertyPadding:
         return valuesForSidesShorthand(paddingShorthand(), style, layoutObject, styledNode, allowVisitedStyle);
     // Individual properties not part of the spec.
     case CSSPropertyBackgroundRepeatX:
     case CSSPropertyBackgroundRepeatY:
         return nullptr;
 
     case CSSPropertyMotion:
         return valuesForShorthandProperty(motionShorthand(), style, layoutObject, styledNode, allowVisitedStyle);
 
-    case CSSPropertyMotionPath:
-        if (const StylePath* styleMotionPath = style.motionPath())
+    case CSSPropertyOffset:
+        return valuesForShorthandProperty(offsetShorthand(), style, layoutObject, styledNode, allowVisitedStyle);
+
+    case CSSPropertyOffsetPath:
+        if (const StylePath* styleMotionPath = style.offsetPath())
             return styleMotionPath->computedCSSValue();
         return CSSPrimitiveValue::createIdentifier(CSSValueNone);
 
-    case CSSPropertyMotionOffset:
-        return zoomAdjustedPixelValueForLength(style.motionOffset(), style);
+    case CSSPropertyOffsetDistance:
+        return zoomAdjustedPixelValueForLength(style.offsetDistance(), style);
 
-    case CSSPropertyMotionRotation: {
+    case CSSPropertyOffsetRotation: {
         CSSValueList* list = CSSValueList::createSpaceSeparated();
-        if (style.motionRotation().type == MotionRotationAuto)
+        if (style.offsetRotation().type == OffsetRotationAuto)
             list->append(*CSSPrimitiveValue::createIdentifier(CSSValueAuto));
-        list->append(*CSSPrimitiveValue::create(style.motionRotation().angle, CSSPrimitiveValue::UnitType::Degrees));
+        list->append(*CSSPrimitiveValue::create(style.offsetRotation().angle, CSSPrimitiveValue::UnitType::Degrees));
         return list;
     }
 
     // Unimplemented CSS 3 properties (including CSS3 shorthand properties).
     case CSSPropertyWebkitTextEmphasis:
         return nullptr;
 
     // Directional properties are resolved by resolveDirectionAwareProperty() before the switch.
     case CSSPropertyWebkitBorderEnd:
     case CSSPropertyWebkitBorderEndColor:
@@ skipping 264 matching lines @@
     case CSSPropertyAll:
         return nullptr;
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 } // namespace blink
+