LCOV - code coverage report
Current view: directory - content/svg/content/src - SVGAnimatedNumberList.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 67 0 0.0 %
Date: 2012-06-02 Functions: 9 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla SVG Project code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is the Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *
      23                 :  * Alternatively, the contents of this file may be used under the terms of
      24                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      25                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      26                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      27                 :  * of those above. If you wish to allow use of your version of this file only
      28                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      29                 :  * use your version of this file under the terms of the MPL, indicate your
      30                 :  * decision by deleting the provisions above and replace them with the notice
      31                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      32                 :  * the provisions above, a recipient may use your version of this file under
      33                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      34                 :  *
      35                 :  * ***** END LICENSE BLOCK ***** */
      36                 : 
      37                 : #include "SVGAnimatedNumberList.h"
      38                 : #include "DOMSVGAnimatedNumberList.h"
      39                 : #include "nsSVGElement.h"
      40                 : #include "nsSVGAttrTearoffTable.h"
      41                 : #include "nsSMILValue.h"
      42                 : #include "SVGNumberListSMILType.h"
      43                 : 
      44                 : namespace mozilla {
      45                 : 
      46                 : nsresult
      47               0 : SVGAnimatedNumberList::SetBaseValueString(const nsAString& aValue)
      48                 : {
      49               0 :   SVGNumberList newBaseValue;
      50               0 :   nsresult rv = newBaseValue.SetValueFromString(aValue);
      51               0 :   if (NS_FAILED(rv)) {
      52               0 :     return rv;
      53                 :   }
      54                 : 
      55                 :   DOMSVGAnimatedNumberList *domWrapper =
      56               0 :     DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
      57               0 :   if (domWrapper) {
      58                 :     // We must send this notification *before* changing mBaseVal! If the length
      59                 :     // of our baseVal is being reduced, our baseVal's DOM wrapper list may have
      60                 :     // to remove DOM items from itself, and any removed DOM items need to copy
      61                 :     // their internal counterpart values *before* we change them.
      62                 :     //
      63               0 :     domWrapper->InternalBaseValListWillChangeTo(newBaseValue);
      64                 :   }
      65                 : 
      66                 :   // We don't need to call DidChange* here - we're only called by
      67                 :   // nsSVGElement::ParseAttribute under nsGenericElement::SetAttr,
      68                 :   // which takes care of notifying.
      69                 : 
      70               0 :   mIsBaseSet = true;
      71               0 :   rv = mBaseVal.CopyFrom(newBaseValue);
      72               0 :   if (NS_FAILED(rv) && domWrapper) {
      73                 :     // Attempting to increase mBaseVal's length failed - reduce domWrapper
      74                 :     // back to the same length:
      75               0 :     domWrapper->InternalBaseValListWillChangeTo(mBaseVal);
      76                 :   }
      77               0 :   return rv;
      78                 : }
      79                 : 
      80                 : void
      81               0 : SVGAnimatedNumberList::ClearBaseValue(PRUint32 aAttrEnum)
      82                 : {
      83                 :   DOMSVGAnimatedNumberList *domWrapper =
      84               0 :     DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
      85               0 :   if (domWrapper) {
      86                 :     // We must send this notification *before* changing mBaseVal! (See above.)
      87               0 :     domWrapper->InternalBaseValListWillChangeTo(SVGNumberList());
      88                 :   }
      89               0 :   mBaseVal.Clear();
      90               0 :   mIsBaseSet = false;
      91                 :   // Caller notifies
      92               0 : }
      93                 : 
      94                 : nsresult
      95               0 : SVGAnimatedNumberList::SetAnimValue(const SVGNumberList& aNewAnimValue,
      96                 :                                     nsSVGElement *aElement,
      97                 :                                     PRUint32 aAttrEnum)
      98                 : {
      99                 :   DOMSVGAnimatedNumberList *domWrapper =
     100               0 :     DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
     101               0 :   if (domWrapper) {
     102                 :     // A new animation may totally change the number of items in the animVal
     103                 :     // list, replacing what was essentially a mirror of the baseVal list, or
     104                 :     // else replacing and overriding an existing animation. When this happens
     105                 :     // we must try and keep our animVal's DOM wrapper in sync (see the comment
     106                 :     // in DOMSVGAnimatedNumberList::InternalBaseValListWillChangeTo).
     107                 :     //
     108                 :     // It's not possible for us to reliably distinguish between calls to this
     109                 :     // method that are setting a new sample for an existing animation, and
     110                 :     // calls that are setting the first sample of an animation that will
     111                 :     // override an existing animation. Happily it's cheap to just blindly
     112                 :     // notify our animVal's DOM wrapper of its internal counterpart's new value
     113                 :     // each time this method is called, so that's what we do.
     114                 :     //
     115                 :     // Note that we must send this notification *before* setting or changing
     116                 :     // mAnimVal! (See the comment in SetBaseValueString above.)
     117                 :     //
     118               0 :     domWrapper->InternalAnimValListWillChangeTo(aNewAnimValue);
     119                 :   }
     120               0 :   if (!mAnimVal) {
     121               0 :     mAnimVal = new SVGNumberList();
     122                 :   }
     123               0 :   nsresult rv = mAnimVal->CopyFrom(aNewAnimValue);
     124               0 :   if (NS_FAILED(rv)) {
     125                 :     // OOM. We clear the animation, and, importantly, ClearAnimValue() ensures
     126                 :     // that mAnimVal and its DOM wrapper (if any) will have the same length!
     127               0 :     ClearAnimValue(aElement, aAttrEnum);
     128               0 :     return rv;
     129                 :   }
     130               0 :   aElement->DidAnimateNumberList(aAttrEnum);
     131               0 :   return NS_OK;
     132                 : }
     133                 : 
     134                 : void
     135               0 : SVGAnimatedNumberList::ClearAnimValue(nsSVGElement *aElement,
     136                 :                                       PRUint32 aAttrEnum)
     137                 : {
     138                 :   DOMSVGAnimatedNumberList *domWrapper =
     139               0 :     DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
     140               0 :   if (domWrapper) {
     141                 :     // When all animation ends, animVal simply mirrors baseVal, which may have
     142                 :     // a different number of items to the last active animated value. We must
     143                 :     // keep the length of our animVal's DOM wrapper list in sync, and again we
     144                 :     // must do that before touching mAnimVal. See comments above.
     145                 :     //
     146               0 :     domWrapper->InternalAnimValListWillChangeTo(mBaseVal);
     147                 :   }
     148               0 :   mAnimVal = nsnull;
     149               0 :   aElement->DidAnimateNumberList(aAttrEnum);
     150               0 : }
     151                 : 
     152                 : nsISMILAttr*
     153               0 : SVGAnimatedNumberList::ToSMILAttr(nsSVGElement *aSVGElement,
     154                 :                                   PRUint8 aAttrEnum)
     155                 : {
     156               0 :   return new SMILAnimatedNumberList(this, aSVGElement, aAttrEnum);
     157                 : }
     158                 : 
     159                 : nsresult
     160               0 : SVGAnimatedNumberList::
     161                 :   SMILAnimatedNumberList::ValueFromString(const nsAString& aStr,
     162                 :                                const nsISMILAnimationElement* /*aSrcElement*/,
     163                 :                                nsSMILValue& aValue,
     164                 :                                bool& aPreventCachingOfSandwich) const
     165                 : {
     166               0 :   nsSMILValue val(&SVGNumberListSMILType::sSingleton);
     167               0 :   SVGNumberListAndInfo *nlai = static_cast<SVGNumberListAndInfo*>(val.mU.mPtr);
     168               0 :   nsresult rv = nlai->SetValueFromString(aStr);
     169               0 :   if (NS_SUCCEEDED(rv)) {
     170               0 :     nlai->SetInfo(mElement);
     171               0 :     aValue.Swap(val);
     172                 :   }
     173               0 :   aPreventCachingOfSandwich = false;
     174               0 :   return rv;
     175                 : }
     176                 : 
     177                 : nsSMILValue
     178               0 : SVGAnimatedNumberList::SMILAnimatedNumberList::GetBaseValue() const
     179                 : {
     180                 :   // To benefit from Return Value Optimization and avoid copy constructor calls
     181                 :   // due to our use of return-by-value, we must return the exact same object
     182                 :   // from ALL return points. This function must only return THIS variable:
     183               0 :   nsSMILValue val;
     184                 : 
     185               0 :   nsSMILValue tmp(&SVGNumberListSMILType::sSingleton);
     186               0 :   SVGNumberListAndInfo *nlai = static_cast<SVGNumberListAndInfo*>(tmp.mU.mPtr);
     187               0 :   nsresult rv = nlai->CopyFrom(mVal->mBaseVal);
     188               0 :   if (NS_SUCCEEDED(rv)) {
     189               0 :     nlai->SetInfo(mElement);
     190               0 :     val.Swap(tmp);
     191                 :   }
     192                 :   return val;
     193                 : }
     194                 : 
     195                 : nsresult
     196               0 : SVGAnimatedNumberList::SMILAnimatedNumberList::SetAnimValue(const nsSMILValue& aValue)
     197                 : {
     198               0 :   NS_ASSERTION(aValue.mType == &SVGNumberListSMILType::sSingleton,
     199                 :                "Unexpected type to assign animated value");
     200               0 :   if (aValue.mType == &SVGNumberListSMILType::sSingleton) {
     201                 :     mVal->SetAnimValue(*static_cast<SVGNumberListAndInfo*>(aValue.mU.mPtr),
     202                 :                        mElement,
     203               0 :                        mAttrEnum);
     204                 :   }
     205               0 :   return NS_OK;
     206                 : }
     207                 : 
     208                 : void
     209               0 : SVGAnimatedNumberList::SMILAnimatedNumberList::ClearAnimValue()
     210                 : {
     211               0 :   if (mVal->mAnimVal) {
     212               0 :     mVal->ClearAnimValue(mElement, mAttrEnum);
     213                 :   }
     214               0 : }
     215                 : 
     216                 : } // namespace mozilla

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