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

third_party/WebKit/Source/core/css/resolver/StyleBuilderConverter.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 726 matching lines @@
 
 float StyleBuilderConverter::convertNumberOrPercentage(StyleResolverState& state, const CSSValue& value)
 {
     const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
     ASSERT(primitiveValue.isNumber() || primitiveValue.isPercentage());
     if (primitiveValue.isNumber())
         return primitiveValue.getFloatValue();
     return primitiveValue.getFloatValue() / 100.0f;
 }
 
-StyleMotionRotation StyleBuilderConverter::convertMotionRotation(StyleResolverState&, const CSSValue& value)
+StyleOffsetRotation StyleBuilderConverter::convertOffsetRotation(StyleResolverState&, const CSSValue& value)
 {
-    return convertMotionRotation(value);
+    return convertOffsetRotation(value);
 }
 
-StyleMotionRotation StyleBuilderConverter::convertMotionRotation(const CSSValue& value)
+StyleOffsetRotation StyleBuilderConverter::convertOffsetRotation(const CSSValue& value)
 {
-    StyleMotionRotation result(0, MotionRotationFixed);
+    StyleOffsetRotation result(0, OffsetRotationFixed);
 
     const CSSValueList& list = toCSSValueList(value);
     ASSERT(list.length() == 1 || list.length() == 2);
     for (const auto& item : list) {
         const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(*item);
         if (primitiveValue.getValueID() == CSSValueAuto) {
-            result.type = MotionRotationAuto;
+            result.type = OffsetRotationAuto;
         } else if (primitiveValue.getValueID() == CSSValueReverse) {
-            result.type = MotionRotationAuto;
+            result.type = OffsetRotationAuto;
             result.angle += 180;
         } else {
             result.angle += primitiveValue.computeDegrees();
         }
     }
     result.angle = clampTo<float>(result.angle);
 
     return result;
 }
 
@@ skipping 28 matching lines @@
 
 LengthPoint StyleBuilderConverter::convertPosition(StyleResolverState& state, const CSSValue& value)
 {
     const CSSValuePair& pair = toCSSValuePair(value);
     return LengthPoint(
         convertPositionLength<CSSValueLeft, CSSValueRight>(state, pair.first()),
         convertPositionLength<CSSValueTop, CSSValueBottom>(state, pair.second())
     );
 }
 
+LengthPoint StyleBuilderConverter::convertPositionOrAuto(StyleResolverState& state, const CSSValue& value)
+{
+    if (value.isValuePair())
+        return convertPosition(state, value);
+    DCHECK(toCSSPrimitiveValue(value).getValueID() == CSSValueAuto);
+    return LengthPoint(Length(Auto), Length(Auto));
+}
+
 static float convertPerspectiveLength(StyleResolverState& state, const CSSPrimitiveValue& primitiveValue)
 {
     return std::max(primitiveValue.computeLength<float>(state.cssToLengthConversionData()), 0.0f);
 }
 
 float StyleBuilderConverter::convertPerspective(StyleResolverState& state, const CSSValue& value)
 {
     const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
 
     if (primitiveValue.getValueID() == CSSValueNone)
@@ skipping 268 matching lines @@
 
 PassRefPtr<StylePath> StyleBuilderConverter::convertPathOrNone(StyleResolverState& state, const CSSValue& value)
 {
     if (value.isPathValue())
         return toCSSPathValue(value).stylePath();
     ASSERT(value.isPrimitiveValue() && toCSSPrimitiveValue(value).getValueID() == CSSValueNone);
     return nullptr;
 }
 
 } // namespace blink