LCOV - code coverage report
Current view: directory - content/svg/content/src - SVGViewBoxSMILType.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 55 2 3.6 %
Date: 2012-06-02 Functions: 10 2 20.0 %

       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 the Mozilla SVG project.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is the Mozilla Corporation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2009
      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 of the GNU General Public License Version 2 or later (the "GPL"),
      25                 :  * or 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 "SVGViewBoxSMILType.h"
      38                 : #include "nsSMILValue.h"
      39                 : #include "nsSVGViewBox.h"
      40                 : #include "nsDebug.h"
      41                 : #include <math.h>
      42                 : 
      43                 : namespace mozilla {
      44                 :   
      45            1464 : /*static*/ SVGViewBoxSMILType SVGViewBoxSMILType::sSingleton;
      46                 : 
      47                 : void
      48               0 : SVGViewBoxSMILType::Init(nsSMILValue& aValue) const
      49                 : {
      50               0 :   NS_ABORT_IF_FALSE(aValue.IsNull(), "Unexpected value type");
      51                 : 
      52               0 :   nsSVGViewBoxRect* viewBox = new nsSVGViewBoxRect();
      53               0 :   aValue.mU.mPtr = viewBox;
      54               0 :   aValue.mType = this;
      55               0 : }
      56                 : 
      57                 : void
      58               0 : SVGViewBoxSMILType::Destroy(nsSMILValue& aValue) const
      59                 : {
      60               0 :   NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
      61               0 :   delete static_cast<nsSVGViewBoxRect*>(aValue.mU.mPtr);
      62               0 :   aValue.mU.mPtr = nsnull;
      63               0 :   aValue.mType = &nsSMILNullType::sSingleton;
      64               0 : }
      65                 : 
      66                 : nsresult
      67               0 : SVGViewBoxSMILType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
      68                 : {
      69               0 :   NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
      70               0 :   NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
      71                 : 
      72               0 :   const nsSVGViewBoxRect* src = static_cast<const nsSVGViewBoxRect*>(aSrc.mU.mPtr);
      73               0 :   nsSVGViewBoxRect* dst = static_cast<nsSVGViewBoxRect*>(aDest.mU.mPtr);
      74               0 :   *dst = *src;
      75               0 :   return NS_OK;
      76                 : }
      77                 : 
      78                 : bool
      79               0 : SVGViewBoxSMILType::IsEqual(const nsSMILValue& aLeft,
      80                 :                             const nsSMILValue& aRight) const
      81                 : {
      82               0 :   NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
      83               0 :   NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
      84                 : 
      85                 :   const nsSVGViewBoxRect* leftBox =
      86               0 :     static_cast<const nsSVGViewBoxRect*>(aLeft.mU.mPtr);
      87                 :   const nsSVGViewBoxRect* rightBox =
      88               0 :     static_cast<nsSVGViewBoxRect*>(aRight.mU.mPtr);
      89               0 :   return *leftBox == *rightBox;
      90                 : }
      91                 : 
      92                 : nsresult
      93               0 : SVGViewBoxSMILType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
      94                 :                         PRUint32 aCount) const
      95                 : {
      96               0 :   NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
      97                 :                   "Trying to add invalid types");
      98               0 :   NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
      99                 : 
     100                 :   // See https://bugzilla.mozilla.org/show_bug.cgi?id=541884#c3 and the two
     101                 :   // comments that follow that one for arguments for and against allowing
     102                 :   // viewBox to be additive.
     103                 : 
     104               0 :   return NS_ERROR_FAILURE;
     105                 : }
     106                 : 
     107                 : nsresult
     108               0 : SVGViewBoxSMILType::ComputeDistance(const nsSMILValue& aFrom,
     109                 :                                     const nsSMILValue& aTo,
     110                 :                                     double& aDistance) const
     111                 : {
     112               0 :   NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
     113               0 :   NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
     114                 : 
     115               0 :   const nsSVGViewBoxRect* from = static_cast<const nsSVGViewBoxRect*>(aFrom.mU.mPtr);
     116               0 :   const nsSVGViewBoxRect* to = static_cast<const nsSVGViewBoxRect*>(aTo.mU.mPtr);
     117                 : 
     118                 :   // We use the distances between the edges rather than the difference between
     119                 :   // the x, y, width and height for the "distance". This is necessary in
     120                 :   // order for the "distance" result that we calculate to be the same for a
     121                 :   // given change in the left side as it is for an equal change in the opposite
     122                 :   // side. See https://bugzilla.mozilla.org/show_bug.cgi?id=541884#c12
     123                 : 
     124               0 :   float dLeft = to->x - from->x;
     125               0 :   float dTop = to->y - from->y;
     126               0 :   float dRight = ( to->x + to->width ) - ( from->x + from->width );
     127               0 :   float dBottom = ( to->y + to->height ) - ( from->y + from->height );
     128                 : 
     129               0 :   aDistance = sqrt(dLeft*dLeft + dTop*dTop + dRight*dRight + dBottom*dBottom);
     130                 : 
     131               0 :   return NS_OK;
     132                 : }
     133                 : 
     134                 : nsresult
     135               0 : SVGViewBoxSMILType::Interpolate(const nsSMILValue& aStartVal,
     136                 :                                 const nsSMILValue& aEndVal,
     137                 :                                 double aUnitDistance,
     138                 :                                 nsSMILValue& aResult) const
     139                 : {
     140               0 :   NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
     141                 :                   "Trying to interpolate different types");
     142               0 :   NS_PRECONDITION(aStartVal.mType == this,
     143                 :                   "Unexpected types for interpolation");
     144               0 :   NS_PRECONDITION(aResult.mType == this, "Unexpected result type");
     145                 :   
     146               0 :   const nsSVGViewBoxRect* start = static_cast<const nsSVGViewBoxRect*>(aStartVal.mU.mPtr);
     147               0 :   const nsSVGViewBoxRect* end = static_cast<const nsSVGViewBoxRect*>(aEndVal.mU.mPtr);
     148               0 :   nsSVGViewBoxRect* current = static_cast<nsSVGViewBoxRect*>(aResult.mU.mPtr);
     149                 : 
     150               0 :   float x = (start->x + (end->x - start->x) * aUnitDistance);
     151               0 :   float y = (start->y + (end->y - start->y) * aUnitDistance);
     152               0 :   float width = (start->width + (end->width - start->width) * aUnitDistance);
     153               0 :   float height = (start->height + (end->height - start->height) * aUnitDistance);
     154                 : 
     155               0 :   *current = nsSVGViewBoxRect(x, y, width, height);
     156                 :   
     157               0 :   return NS_OK;
     158                 : }
     159                 : 
     160            4392 : } // namespace mozilla

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