LCOV - app.info - content/svg/content/src/SVGViewBoxSMILType.cpp

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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