Make 'transform' a presentation attribute on SVG elements

third_party/WebKit/Source/core/svg/SVGTransformList.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2012. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/svg/SVGTransformList.h"
 
 #include "core/SVGNames.h"
+#include "core/css/CSSFunctionValue.h"
+#include "core/css/CSSIdentifierValue.h"
+#include "core/css/CSSPrimitiveValue.h"
+#include "core/css/CSSValueList.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "core/svg/SVGTransformDistance.h"
 #include "wtf/text/ParsingUtilities.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 SVGTransformList::SVGTransformList() {}
 
@@ skipping 14 matching lines @@
   ConstIterator it = begin();
   ConstIterator itEnd = end();
   for (; it != itEnd; ++it)
     result *= it->matrix();
 
   return true;
 }
 
 namespace {
 
+CSSValueID mapTransformFunction(const SVGTransform& transform) {
+  switch (transform.transformType()) {
+    case kSvgTransformMatrix:
+      return CSSValueMatrix;
+    case kSvgTransformTranslate:
+      return CSSValueTranslate;
+    case kSvgTransformScale:
+      return CSSValueScale;
+    case kSvgTransformRotate:
+      return CSSValueRotate;
+    case kSvgTransformSkewx:
+      return CSSValueSkewX;
+    case kSvgTransformSkewy:
+      return CSSValueSkewY;
+    case kSvgTransformUnknown:
+    default:
+      NOTREACHED();
+  }
+  return CSSValueInvalid;
+}
+
+CSSValue* createTransformCSSValue(const SVGTransform& transform) {
+  CSSValueID functionId = mapTransformFunction(transform);
+  CSSFunctionValue* transformValue = CSSFunctionValue::create(functionId);
+  switch (functionId) {
+    case CSSValueRotate: {
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.angle(), CSSPrimitiveValue::UnitType::Degrees));
+      FloatPoint rotationOrigin = transform.rotationCenter();
+      if (!toFloatSize(rotationOrigin).isZero()) {
+        transformValue->append(*CSSPrimitiveValue::create(
+            rotationOrigin.x(), CSSPrimitiveValue::UnitType::UserUnits));
+        transformValue->append(*CSSPrimitiveValue::create(
+            rotationOrigin.y(), CSSPrimitiveValue::UnitType::UserUnits));
+      }
+      break;
+    }
+    case CSSValueSkewX:
+    case CSSValueSkewY:
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.angle(), CSSPrimitiveValue::UnitType::Degrees));
+      break;
+    case CSSValueMatrix:
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().a(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().b(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().c(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().d(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().e(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().f(), CSSPrimitiveValue::UnitType::UserUnits));
+      break;
+    case CSSValueScale:
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().a(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().d(), CSSPrimitiveValue::UnitType::UserUnits));
+      break;
+    case CSSValueTranslate:
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().e(), CSSPrimitiveValue::UnitType::UserUnits));
+      transformValue->append(*CSSPrimitiveValue::create(
+          transform.matrix().f(), CSSPrimitiveValue::UnitType::UserUnits));
+      break;
+    default:
+      NOTREACHED();
+  }
+  return transformValue;
+}
+
+}  // namespace
+
+const CSSValue* SVGTransformList::cssValue() const {
+  // Build a structure of CSSValues from the list we have, mapping functions as
+  // appropriate.
+  // TODO(fs): Eventually we'd want to support the exact same syntax here as in
+  // the property, but there are some issues (crbug.com/577219 for instance)
+  // that complicates things.
+  size_t length = this->length();
+  if (!length)
+    return CSSIdentifierValue::create(CSSValueNone);
+  CSSValueList* list = CSSValueList::createSpaceSeparated();
+  if (length == 1) {
+    list->append(*createTransformCSSValue(*at(0)));
+    return list;
+  }
+  ConstIterator it = begin();
+  ConstIterator itEnd = end();
+  for (; it != itEnd; ++it)
+    list->append(*createTransformCSSValue(**it));
+  return list;
+}
+
+namespace {
+
 template <typename CharType>
 SVGTransformType parseAndSkipTransformType(const CharType*& ptr,
                                            const CharType* end) {
   if (ptr >= end)
     return kSvgTransformUnknown;
 
   if (*ptr == 's') {
     if (skipToken(ptr, end, "skewX"))
       return kSvgTransformSkewx;
     if (skipToken(ptr, end, "skewY"))
@@ skipping 351 matching lines @@
 
   // Spec: http://www.w3.org/TR/SVG/animate.html#complexDistances
   // Paced animations assume a notion of distance between the various animation
   // values defined by the 'to', 'from', 'by' and 'values' attributes.  Distance
   // is defined only for scalar types (such as <length>), colors and the subset
   // of transformation types that are supported by 'animateTransform'.
   return SVGTransformDistance(at(0), toList->at(0)).distance();
 }
 
 }  // namespace blink