LCOV - code coverage report
Current view: directory - content/svg/content/src - SVGTransform.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 133 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                 :  * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla SVG Project code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is the Mozilla Foundation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Brian Birtles <birtles@gmail.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "SVGTransform.h"
      40                 : #include "nsContentUtils.h"
      41                 : #include "nsTextFormatter.h"
      42                 : 
      43                 : namespace {
      44                 :   const double radPerDegree = 2.0*3.1415926535 / 360.0;
      45                 : }
      46                 : 
      47                 : namespace mozilla {
      48                 : 
      49                 : void
      50               0 : SVGTransform::GetValueAsString(nsAString& aValue) const
      51                 : {
      52                 :   PRUnichar buf[256];
      53                 : 
      54               0 :   switch (mType) {
      55                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_TRANSLATE:
      56               0 :       if (mMatrix.x0 != 0.0f)
      57                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      58               0 :             NS_LITERAL_STRING("translate(%g, %g)").get(),
      59               0 :             mMatrix.x0, mMatrix.y0);
      60                 :       else
      61                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      62               0 :             NS_LITERAL_STRING("translate(%g)").get(),
      63               0 :             mMatrix.x0);
      64               0 :       break;
      65                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_ROTATE:
      66               0 :       if (mOriginX != 0.0f || mOriginY != 0.0f)
      67                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      68               0 :             NS_LITERAL_STRING("rotate(%g, %g, %g)").get(),
      69               0 :             mAngle, mOriginX, mOriginY);
      70                 :       else
      71                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      72               0 :             NS_LITERAL_STRING("rotate(%g)").get(), mAngle);
      73               0 :       break;
      74                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SCALE:
      75               0 :       if (mMatrix.xx != mMatrix.yy)
      76                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      77               0 :             NS_LITERAL_STRING("scale(%g, %g)").get(), mMatrix.xx, mMatrix.yy);
      78                 :       else
      79                 :         nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      80               0 :             NS_LITERAL_STRING("scale(%g)").get(), mMatrix.xx);
      81               0 :       break;
      82                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWX:
      83                 :       nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      84               0 :                                 NS_LITERAL_STRING("skewX(%g)").get(), mAngle);
      85               0 :       break;
      86                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWY:
      87                 :       nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      88               0 :                                 NS_LITERAL_STRING("skewY(%g)").get(), mAngle);
      89               0 :       break;
      90                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_MATRIX:
      91                 :       nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
      92               0 :           NS_LITERAL_STRING("matrix(%g, %g, %g, %g, %g, %g)").get(),
      93                 :                             mMatrix.xx, mMatrix.yx,
      94                 :                             mMatrix.xy, mMatrix.yy,
      95               0 :                             mMatrix.x0, mMatrix.y0);
      96               0 :       break;
      97                 :     default:
      98               0 :       buf[0] = '\0';
      99               0 :       NS_ERROR("unknown transformation type");
     100               0 :       break;
     101                 :   }
     102                 : 
     103               0 :   aValue.Assign(buf);
     104               0 : }
     105                 : 
     106                 : void
     107               0 : SVGTransform::SetMatrix(const gfxMatrix& aMatrix)
     108                 : {
     109               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_MATRIX;
     110               0 :   mMatrix  = aMatrix;
     111                 :   // We set the other members here too, since operator== requires it and
     112                 :   // the DOM requires it for mAngle.
     113               0 :   mAngle   = 0.f;
     114               0 :   mOriginX = 0.f;
     115               0 :   mOriginY = 0.f;
     116               0 : }
     117                 : 
     118                 : void
     119               0 : SVGTransform::SetTranslate(float aTx, float aTy)
     120                 : {
     121               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_TRANSLATE;
     122               0 :   mMatrix.Reset();
     123               0 :   mMatrix.x0 = aTx;
     124               0 :   mMatrix.y0 = aTy;
     125               0 :   mAngle   = 0.f;
     126               0 :   mOriginX = 0.f;
     127               0 :   mOriginY = 0.f;
     128               0 : }
     129                 : 
     130                 : void
     131               0 : SVGTransform::SetScale(float aSx, float aSy)
     132                 : {
     133               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_SCALE;
     134               0 :   mMatrix.Reset();
     135               0 :   mMatrix.xx = aSx;
     136               0 :   mMatrix.yy = aSy;
     137               0 :   mAngle   = 0.f;
     138               0 :   mOriginX = 0.f;
     139               0 :   mOriginY = 0.f;
     140               0 : }
     141                 : 
     142                 : void
     143               0 : SVGTransform::SetRotate(float aAngle, float aCx, float aCy)
     144                 : {
     145               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_ROTATE;
     146               0 :   mMatrix.Reset();
     147               0 :   mMatrix.Translate(gfxPoint(aCx, aCy));
     148               0 :   mMatrix.Rotate(aAngle*radPerDegree);
     149               0 :   mMatrix.Translate(gfxPoint(-aCx, -aCy));
     150               0 :   mAngle   = aAngle;
     151               0 :   mOriginX = aCx;
     152               0 :   mOriginY = aCy;
     153               0 : }
     154                 : 
     155                 : nsresult
     156               0 : SVGTransform::SetSkewX(float aAngle)
     157                 : {
     158               0 :   double ta = tan(aAngle*radPerDegree);
     159               0 :   NS_ENSURE_FINITE(ta, NS_ERROR_DOM_SVG_INVALID_VALUE_ERR);
     160                 : 
     161               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_SKEWX;
     162               0 :   mMatrix.Reset();
     163               0 :   mMatrix.xy = ta;
     164               0 :   mAngle   = aAngle;
     165               0 :   mOriginX = 0.f;
     166               0 :   mOriginY = 0.f;
     167               0 :   return NS_OK;
     168                 : }
     169                 : 
     170                 : nsresult
     171               0 : SVGTransform::SetSkewY(float aAngle)
     172                 : {
     173               0 :   double ta = tan(aAngle*radPerDegree);
     174               0 :   NS_ENSURE_FINITE(ta, NS_ERROR_DOM_SVG_INVALID_VALUE_ERR);
     175                 : 
     176               0 :   mType    = nsIDOMSVGTransform::SVG_TRANSFORM_SKEWY;
     177               0 :   mMatrix.Reset();
     178               0 :   mMatrix.yx = ta;
     179               0 :   mAngle   = aAngle;
     180               0 :   mOriginX = 0.f;
     181               0 :   mOriginY = 0.f;
     182               0 :   return NS_OK;
     183                 : }
     184                 : 
     185               0 : SVGTransformSMILData::SVGTransformSMILData(const SVGTransform& aTransform)
     186               0 :   : mTransformType(aTransform.Type())
     187                 : {
     188               0 :   NS_ABORT_IF_FALSE(
     189                 :     mTransformType >= nsIDOMSVGTransform::SVG_TRANSFORM_MATRIX &&
     190                 :     mTransformType <= nsIDOMSVGTransform::SVG_TRANSFORM_SKEWY,
     191                 :     "Unexpected transform type");
     192                 : 
     193               0 :   for (PRUint32 i = 0; i < NUM_STORED_PARAMS; ++i) {
     194               0 :     mParams[i] = 0.f;
     195                 :   }
     196                 : 
     197               0 :   switch (mTransformType) {
     198                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_MATRIX: {
     199               0 :       const gfxMatrix& mx = aTransform.Matrix();
     200               0 :       mParams[0] = static_cast<float>(mx.xx);
     201               0 :       mParams[1] = static_cast<float>(mx.yx);
     202               0 :       mParams[2] = static_cast<float>(mx.xy);
     203               0 :       mParams[3] = static_cast<float>(mx.yy);
     204               0 :       mParams[4] = static_cast<float>(mx.x0);
     205               0 :       mParams[5] = static_cast<float>(mx.y0);
     206               0 :       break;
     207                 :     }
     208                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_TRANSLATE: {
     209               0 :       const gfxMatrix& mx = aTransform.Matrix();
     210               0 :       mParams[0] = static_cast<float>(mx.x0);
     211               0 :       mParams[1] = static_cast<float>(mx.y0);
     212               0 :       break;
     213                 :     }
     214                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SCALE: {
     215               0 :       const gfxMatrix& mx = aTransform.Matrix();
     216               0 :       mParams[0] = static_cast<float>(mx.xx);
     217               0 :       mParams[1] = static_cast<float>(mx.yy);
     218               0 :       break;
     219                 :     }
     220                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_ROTATE:
     221               0 :       mParams[0] = aTransform.Angle();
     222               0 :       aTransform.GetRotationOrigin(mParams[1], mParams[2]);
     223               0 :       break;
     224                 : 
     225                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWX:
     226                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWY:
     227               0 :       mParams[0] = aTransform.Angle();
     228               0 :       break;
     229                 : 
     230                 :     default:
     231               0 :       NS_NOTREACHED("Unexpected transform type");
     232               0 :       break;
     233                 :   }
     234               0 : }
     235                 : 
     236                 : SVGTransform
     237               0 : SVGTransformSMILData::ToSVGTransform() const
     238                 : {
     239               0 :   SVGTransform result;
     240                 : 
     241               0 :   switch (mTransformType) {
     242                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_MATRIX:
     243               0 :       result.SetMatrix(gfxMatrix(mParams[0], mParams[1],
     244               0 :                                  mParams[2], mParams[3],
     245               0 :                                  mParams[4], mParams[5]));
     246               0 :       break;
     247                 : 
     248                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_TRANSLATE:
     249               0 :       result.SetTranslate(mParams[0], mParams[1]);
     250               0 :       break;
     251                 : 
     252                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SCALE:
     253               0 :       result.SetScale(mParams[0], mParams[1]);
     254               0 :       break;
     255                 : 
     256                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_ROTATE:
     257               0 :       result.SetRotate(mParams[0], mParams[1], mParams[2]);
     258               0 :       break;
     259                 : 
     260                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWX:
     261               0 :       result.SetSkewX(mParams[0]);
     262               0 :       break;
     263                 : 
     264                 :     case nsIDOMSVGTransform::SVG_TRANSFORM_SKEWY:
     265               0 :       result.SetSkewY(mParams[0]);
     266               0 :       break;
     267                 : 
     268                 :     default:
     269               0 :       NS_NOTREACHED("Unexpected transform type");
     270               0 :       break;
     271                 :   }
     272                 :   return result;
     273                 : }
     274                 : 
     275                 : } // namespace mozilla

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