1 files changed, 431 insertions, 0 deletions
diff --git a/dom/svg/nsSVGAngle.cpp b/dom/svg/nsSVGAngle.cpp
new file mode 100644
index 000000000..848ecb04e
--- /dev/null
+++ b/dom/svg/nsSVGAngle.cpp
@@ -0,0 +1,431 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsSVGAngle.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/dom/SVGMarkerElement.h"
+#include "mozilla/Move.h"
+#include "nsContentUtils.h" // NS_ENSURE_FINITE
+#include "nsSMILValue.h"
+#include "nsSVGAttrTearoffTable.h"
+#include "nsTextFormatter.h"
+#include "SVGAngle.h"
+#include "SVGAnimatedAngle.h"
+#include "SVGOrientSMILType.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+static nsIAtom** const unitMap[] =
+{
+  nullptr, /* SVG_ANGLETYPE_UNKNOWN */
+  nullptr, /* SVG_ANGLETYPE_UNSPECIFIED */
+  &nsGkAtoms::deg,
+  &nsGkAtoms::rad,
+  &nsGkAtoms::grad
+};
+
+static nsSVGAttrTearoffTable<nsSVGAngle, SVGAnimatedAngle>
+  sSVGAnimatedAngleTearoffTable;
+static nsSVGAttrTearoffTable<nsSVGAngle, SVGAngle>
+  sBaseSVGAngleTearoffTable;
+static nsSVGAttrTearoffTable<nsSVGAngle, SVGAngle>
+  sAnimSVGAngleTearoffTable;
+
+/* Helper functions */
+
+static bool
+IsValidUnitType(uint16_t unit)
+{
+  if (unit > SVG_ANGLETYPE_UNKNOWN &&
+      unit <= SVG_ANGLETYPE_GRAD)
+    return true;
+
+  return false;
+}
+
+static void 
+GetUnitString(nsAString& unit, uint16_t unitType)
+{
+  if (IsValidUnitType(unitType)) {
+    if (unitMap[unitType]) {
+      (*unitMap[unitType])->ToString(unit);
+    }
+    return;
+  }
+
+  NS_NOTREACHED("Unknown unit type");
+  return;
+}
+
+static uint16_t
+GetUnitTypeForString(const nsAString& unitStr)
+{
+  if (unitStr.IsEmpty()) 
+    return SVG_ANGLETYPE_UNSPECIFIED;
+                   
+  nsIAtom *unitAtom = NS_GetStaticAtom(unitStr);
+
+  if (unitAtom) {
+    for (uint32_t i = 0 ; i < ArrayLength(unitMap) ; i++) {
+      if (unitMap[i] && *unitMap[i] == unitAtom) {
+        return i;
+      }
+    }
+  }
+
+  return SVG_ANGLETYPE_UNKNOWN;
+}
+
+static void
+GetValueString(nsAString &aValueAsString, float aValue, uint16_t aUnitType)
+{
+  char16_t buf[24];
+  nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(char16_t),
+                            u"%g",
+                            (double)aValue);
+  aValueAsString.Assign(buf);
+
+  nsAutoString unitString;
+  GetUnitString(unitString, aUnitType);
+  aValueAsString.Append(unitString);
+}
+
+static bool
+GetValueFromString(const nsAString& aString,
+                   float& aValue,
+                   uint16_t* aUnitType)
+{
+  RangedPtr<const char16_t> iter =
+    SVGContentUtils::GetStartRangedPtr(aString);
+  const RangedPtr<const char16_t> end =
+    SVGContentUtils::GetEndRangedPtr(aString);
+
+  if (!SVGContentUtils::ParseNumber(iter, end, aValue)) {
+    return false;
+  }
+
+  const nsAString& units = Substring(iter.get(), end.get());
+  *aUnitType = GetUnitTypeForString(units);
+  return IsValidUnitType(*aUnitType);
+}
+
+/* static */ float
+nsSVGAngle::GetDegreesPerUnit(uint8_t aUnit)
+{
+  switch (aUnit) {
+  case SVG_ANGLETYPE_UNSPECIFIED:
+  case SVG_ANGLETYPE_DEG:
+    return 1;
+  case SVG_ANGLETYPE_RAD:
+    return static_cast<float>(180.0 / M_PI);
+  case SVG_ANGLETYPE_GRAD:
+    return 90.0f / 100.0f;
+  default:
+    NS_NOTREACHED("Unknown unit type");
+    return 0;
+  }
+}
+
+void
+nsSVGAngle::SetBaseValueInSpecifiedUnits(float aValue,
+                                         nsSVGElement *aSVGElement)
+{
+  if (mBaseVal == aValue) {
+    return;
+  }
+
+  nsAttrValue emptyOrOldValue = aSVGElement->WillChangeAngle(mAttrEnum);
+  mBaseVal = aValue;
+  if (!mIsAnimated) {
+    mAnimVal = mBaseVal;
+  }
+  else {
+    aSVGElement->AnimationNeedsResample();
+  }
+  aSVGElement->DidChangeAngle(mAttrEnum, emptyOrOldValue);
+}
+
+nsresult
+nsSVGAngle::ConvertToSpecifiedUnits(uint16_t unitType,
+                                    nsSVGElement *aSVGElement)
+{
+  if (!IsValidUnitType(unitType))
+    return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+
+  if (mBaseValUnit == uint8_t(unitType))
+    return NS_OK;
+
+  nsAttrValue emptyOrOldValue;
+  if (aSVGElement) {
+    emptyOrOldValue = aSVGElement->WillChangeAngle(mAttrEnum);
+  }
+
+  float valueInUserUnits = mBaseVal * GetDegreesPerUnit(mBaseValUnit);
+  mBaseValUnit = uint8_t(unitType);
+  // Setting aDoSetAttr to false here will ensure we don't call
+  // Will/DidChangeAngle a second time (and dispatch duplicate notifications).
+  SetBaseValue(valueInUserUnits, aSVGElement, false);
+
+  if (aSVGElement) {
+    aSVGElement->DidChangeAngle(mAttrEnum, emptyOrOldValue);
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsSVGAngle::NewValueSpecifiedUnits(uint16_t unitType,
+                                   float valueInSpecifiedUnits,
+                                   nsSVGElement *aSVGElement)
+{
+  NS_ENSURE_FINITE(valueInSpecifiedUnits, NS_ERROR_ILLEGAL_VALUE);
+
+  if (!IsValidUnitType(unitType))
+    return NS_ERROR_DOM_NOT_SUPPORTED_ERR;
+
+  if (mBaseVal == valueInSpecifiedUnits && mBaseValUnit == uint8_t(unitType))
+    return NS_OK;
+
+  nsAttrValue emptyOrOldValue;
+  if (aSVGElement) {
+    emptyOrOldValue = aSVGElement->WillChangeAngle(mAttrEnum);
+  }
+  mBaseVal = valueInSpecifiedUnits;
+  mBaseValUnit = uint8_t(unitType);
+  if (!mIsAnimated) {
+    mAnimVal = mBaseVal;
+    mAnimValUnit = mBaseValUnit;
+  }
+  else {
+    aSVGElement->AnimationNeedsResample();
+  }
+  if (aSVGElement) {
+    aSVGElement->DidChangeAngle(mAttrEnum, emptyOrOldValue);
+  }
+  return NS_OK;
+}
+
+already_AddRefed<SVGAngle>
+nsSVGAngle::ToDOMBaseVal(nsSVGElement *aSVGElement)
+{
+  RefPtr<SVGAngle> domBaseVal =
+    sBaseSVGAngleTearoffTable.GetTearoff(this);
+  if (!domBaseVal) {
+    domBaseVal = new SVGAngle(this, aSVGElement, SVGAngle::BaseValue);
+    sBaseSVGAngleTearoffTable.AddTearoff(this, domBaseVal);
+  }
+
+  return domBaseVal.forget();
+}
+
+already_AddRefed<SVGAngle>
+nsSVGAngle::ToDOMAnimVal(nsSVGElement *aSVGElement)
+{
+  RefPtr<SVGAngle> domAnimVal =
+    sAnimSVGAngleTearoffTable.GetTearoff(this);
+  if (!domAnimVal) {
+    domAnimVal = new SVGAngle(this, aSVGElement, SVGAngle::AnimValue);
+    sAnimSVGAngleTearoffTable.AddTearoff(this, domAnimVal);
+  }
+
+  return domAnimVal.forget();
+}
+
+SVGAngle::~SVGAngle()
+{
+  if (mType == BaseValue) {
+    sBaseSVGAngleTearoffTable.RemoveTearoff(mVal);
+  } else if (mType == AnimValue) {
+    sAnimSVGAngleTearoffTable.RemoveTearoff(mVal);
+  } else {
+    delete mVal;
+  }
+}
+
+/* Implementation */
+
+nsresult
+nsSVGAngle::SetBaseValueString(const nsAString &aValueAsString,
+                               nsSVGElement *aSVGElement,
+                               bool aDoSetAttr)
+{
+  float value;
+  uint16_t unitType;
+  
+  if (!GetValueFromString(aValueAsString, value, &unitType)) {
+     return NS_ERROR_DOM_SYNTAX_ERR;
+  }
+  if (mBaseVal == value && mBaseValUnit == uint8_t(unitType)) {
+    return NS_OK;
+  }
+
+  nsAttrValue emptyOrOldValue;
+  if (aDoSetAttr) {
+    emptyOrOldValue = aSVGElement->WillChangeAngle(mAttrEnum);
+  }
+  mBaseVal = value;
+  mBaseValUnit = uint8_t(unitType);
+  if (!mIsAnimated) {
+    mAnimVal = mBaseVal;
+    mAnimValUnit = mBaseValUnit;
+  }
+  else {
+    aSVGElement->AnimationNeedsResample();
+  }
+
+  if (aDoSetAttr) {
+    aSVGElement->DidChangeAngle(mAttrEnum, emptyOrOldValue);
+  }
+  return NS_OK;
+}
+
+void
+nsSVGAngle::GetBaseValueString(nsAString & aValueAsString) const
+{
+  GetValueString(aValueAsString, mBaseVal, mBaseValUnit);
+}
+
+void
+nsSVGAngle::GetAnimValueString(nsAString & aValueAsString) const
+{
+  GetValueString(aValueAsString, mAnimVal, mAnimValUnit);
+}
+
+void
+nsSVGAngle::SetBaseValue(float aValue, nsSVGElement *aSVGElement,
+                         bool aDoSetAttr)
+{
+  if (mBaseVal == aValue * GetDegreesPerUnit(mBaseValUnit)) {
+    return;
+  }
+  nsAttrValue emptyOrOldValue;
+  if (aSVGElement && aDoSetAttr) {
+    emptyOrOldValue = aSVGElement->WillChangeAngle(mAttrEnum);
+  }
+
+  mBaseVal = aValue / GetDegreesPerUnit(mBaseValUnit);
+  if (!mIsAnimated) {
+    mAnimVal = mBaseVal;
+  }
+  else {
+    aSVGElement->AnimationNeedsResample();
+  }
+  if (aSVGElement && aDoSetAttr) {
+    aSVGElement->DidChangeAngle(mAttrEnum, emptyOrOldValue);
+  }
+}
+
+void
+nsSVGAngle::SetAnimValue(float aValue, uint8_t aUnit, nsSVGElement *aSVGElement)
+{
+  if (mIsAnimated && mAnimVal == aValue && mAnimValUnit == aUnit) {
+    return;
+  }
+  mAnimVal = aValue;
+  mAnimValUnit = aUnit;
+  mIsAnimated = true;
+  aSVGElement->DidAnimateAngle(mAttrEnum);
+}
+
+already_AddRefed<SVGAnimatedAngle>
+nsSVGAngle::ToDOMAnimatedAngle(nsSVGElement *aSVGElement)
+{
+  RefPtr<SVGAnimatedAngle> domAnimatedAngle =
+    sSVGAnimatedAngleTearoffTable.GetTearoff(this);
+  if (!domAnimatedAngle) {
+    domAnimatedAngle = new SVGAnimatedAngle(this, aSVGElement);
+    sSVGAnimatedAngleTearoffTable.AddTearoff(this, domAnimatedAngle);
+  }
+
+  return domAnimatedAngle.forget();
+}
+
+SVGAnimatedAngle::~SVGAnimatedAngle()
+{
+  sSVGAnimatedAngleTearoffTable.RemoveTearoff(mVal);
+}
+
+nsISMILAttr*
+nsSVGAngle::ToSMILAttr(nsSVGElement *aSVGElement)
+{
+  if (aSVGElement->NodeInfo()->Equals(nsGkAtoms::marker, kNameSpaceID_SVG)) {
+    SVGMarkerElement *marker = static_cast<SVGMarkerElement*>(aSVGElement);
+    return new SMILOrient(marker->GetOrientType(), this, aSVGElement);
+  }
+  // SMILOrient would not be useful for general angle attributes (also,
+  // "orient" is the only animatable <angle>-valued attribute in SVG 1.1).
+  NS_NOTREACHED("Trying to animate unknown angle attribute.");
+  return nullptr;
+}
+
+nsresult
+nsSVGAngle::SMILOrient::ValueFromString(const nsAString& aStr,
+                                        const SVGAnimationElement* /*aSrcElement*/,
+                                        nsSMILValue& aValue,
+                                        bool& aPreventCachingOfSandwich) const
+{
+  nsSMILValue val(&SVGOrientSMILType::sSingleton);
+  if (aStr.EqualsLiteral("auto")) {
+    val.mU.mOrient.mOrientType = SVG_MARKER_ORIENT_AUTO;
+  } else if (aStr.EqualsLiteral("auto-start-reverse")) {
+    val.mU.mOrient.mOrientType = SVG_MARKER_ORIENT_AUTO_START_REVERSE;
+  } else {
+    float value;
+    uint16_t unitType;
+    if (!GetValueFromString(aStr, value, &unitType)) {
+      return NS_ERROR_DOM_SYNTAX_ERR;
+    }
+    val.mU.mOrient.mAngle = value;
+    val.mU.mOrient.mUnit = unitType;
+    val.mU.mOrient.mOrientType = SVG_MARKER_ORIENT_ANGLE;
+  }
+  aValue = Move(val);
+  aPreventCachingOfSandwich = false;
+
+  return NS_OK;
+}
+
+nsSMILValue
+nsSVGAngle::SMILOrient::GetBaseValue() const
+{
+  nsSMILValue val(&SVGOrientSMILType::sSingleton);
+  val.mU.mOrient.mAngle = mAngle->GetBaseValInSpecifiedUnits();
+  val.mU.mOrient.mUnit = mAngle->GetBaseValueUnit();
+  val.mU.mOrient.mOrientType = mOrientType->GetBaseValue();
+  return val;
+}
+
+void
+nsSVGAngle::SMILOrient::ClearAnimValue()
+{
+  if (mAngle->mIsAnimated) {
+    mOrientType->SetAnimValue(mOrientType->GetBaseValue());
+    mAngle->mIsAnimated = false;
+    mAngle->mAnimVal = mAngle->mBaseVal;
+    mAngle->mAnimValUnit = mAngle->mBaseValUnit;
+    mSVGElement->DidAnimateAngle(mAngle->mAttrEnum);
+  }
+}
+
+nsresult
+nsSVGAngle::SMILOrient::SetAnimValue(const nsSMILValue& aValue)
+{
+  NS_ASSERTION(aValue.mType == &SVGOrientSMILType::sSingleton,
+               "Unexpected type to assign animated value");
+
+  if (aValue.mType == &SVGOrientSMILType::sSingleton) {
+    mOrientType->SetAnimValue(aValue.mU.mOrient.mOrientType);
+    if (aValue.mU.mOrient.mOrientType == SVG_MARKER_ORIENT_AUTO ||
+        aValue.mU.mOrient.mOrientType == SVG_MARKER_ORIENT_AUTO_START_REVERSE) {
+      mAngle->SetAnimValue(0.0f, SVG_ANGLETYPE_UNSPECIFIED, mSVGElement);
+    } else {
+      mAngle->SetAnimValue(aValue.mU.mOrient.mAngle, aValue.mU.mOrient.mUnit, mSVGElement);
+    }
+  }
+  return NS_OK;
+}