LCOV - code coverage report
Current view: directory - content/svg/content/src - SVGMotionSMILPathUtils.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 57 0 0.0 %
Date: 2012-06-02 Functions: 7 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 the Mozilla SVG project.
      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                 :  *   Daniel Holbert <dholbert@mozilla.com>
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "SVGMotionSMILPathUtils.h"
      39                 : #include "nsSVGElement.h"
      40                 : #include "SVGLength.h"
      41                 : #include "nsContentCreatorFunctions.h" // For NS_NewSVGElement
      42                 : #include "nsCharSeparatedTokenizer.h"
      43                 : #include "nsContentUtils.h"
      44                 : #include "nsSVGUtils.h"
      45                 : 
      46                 : namespace mozilla {
      47                 : 
      48                 : //----------------------------------------------------------------------
      49                 : // PathGenerator methods
      50                 : 
      51                 : // For the dummy 'from' value used in pure by-animation & to-animation
      52                 : void
      53               0 : SVGMotionSMILPathUtils::PathGenerator::
      54                 :   MoveToOrigin()
      55                 : {
      56               0 :   NS_ABORT_IF_FALSE(!mHaveReceivedCommands,
      57                 :                     "Not expecting requests for mid-path MoveTo commands");
      58               0 :   mHaveReceivedCommands = true;
      59               0 :   mGfxContext.MoveTo(gfxPoint(0, 0));
      60               0 : }
      61                 : 
      62                 : // For 'from' and the first entry in 'values'.
      63                 : bool
      64               0 : SVGMotionSMILPathUtils::PathGenerator::
      65                 :   MoveToAbsolute(const nsAString& aCoordPairStr)
      66                 : {
      67               0 :   NS_ABORT_IF_FALSE(!mHaveReceivedCommands,
      68                 :                     "Not expecting requests for mid-path MoveTo commands");
      69               0 :   mHaveReceivedCommands = true;
      70                 : 
      71                 :   float xVal, yVal;
      72               0 :   if (!ParseCoordinatePair(aCoordPairStr, xVal, yVal)) {
      73               0 :     return false;
      74                 :   }
      75               0 :   mGfxContext.MoveTo(gfxPoint(xVal, yVal));
      76               0 :   return true;
      77                 : }
      78                 : 
      79                 : // For 'to' and every entry in 'values' except the first.
      80                 : bool
      81               0 : SVGMotionSMILPathUtils::PathGenerator::
      82                 :   LineToAbsolute(const nsAString& aCoordPairStr, double& aSegmentDistance)
      83                 : {
      84               0 :   mHaveReceivedCommands = true;
      85                 : 
      86                 :   float xVal, yVal;
      87               0 :   if (!ParseCoordinatePair(aCoordPairStr, xVal, yVal)) {
      88               0 :     return false;
      89                 :   }
      90               0 :   gfxPoint initialPoint = mGfxContext.CurrentPoint();
      91                 : 
      92               0 :   mGfxContext.LineTo(gfxPoint(xVal, yVal));
      93               0 :   aSegmentDistance = NS_hypot(initialPoint.x - xVal, initialPoint.y -yVal);
      94               0 :   return true;
      95                 : }
      96                 : 
      97                 : // For 'by'.
      98                 : bool
      99               0 : SVGMotionSMILPathUtils::PathGenerator::
     100                 :   LineToRelative(const nsAString& aCoordPairStr, double& aSegmentDistance)
     101                 : {
     102               0 :   mHaveReceivedCommands = true;
     103                 : 
     104                 :   float xVal, yVal;
     105               0 :   if (!ParseCoordinatePair(aCoordPairStr, xVal, yVal)) {
     106               0 :     return false;
     107                 :   }
     108               0 :   mGfxContext.LineTo(mGfxContext.CurrentPoint() + gfxPoint(xVal, yVal));
     109               0 :   aSegmentDistance = NS_hypot(xVal, yVal);
     110               0 :   return true;
     111                 : }
     112                 : 
     113                 : already_AddRefed<gfxFlattenedPath>
     114               0 : SVGMotionSMILPathUtils::PathGenerator::GetResultingPath()
     115                 : {
     116               0 :   return mGfxContext.GetFlattenedPath();
     117                 : }
     118                 : 
     119                 : //----------------------------------------------------------------------
     120                 : // Helper / protected methods
     121                 : 
     122                 : bool
     123               0 : SVGMotionSMILPathUtils::PathGenerator::
     124                 :   ParseCoordinatePair(const nsAString& aCoordPairStr,
     125                 :                       float& aXVal, float& aYVal)
     126                 : {
     127                 :   nsCharSeparatedTokenizerTemplate<IsSVGWhitespace>
     128                 :     tokenizer(aCoordPairStr, ',',
     129               0 :               nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);
     130                 : 
     131               0 :   SVGLength x, y;
     132                 : 
     133               0 :   if (!tokenizer.hasMoreTokens() ||
     134               0 :       !x.SetValueFromString(tokenizer.nextToken())) {
     135               0 :     return false;
     136                 :   }
     137                 : 
     138               0 :   if (!tokenizer.hasMoreTokens() ||
     139               0 :       !y.SetValueFromString(tokenizer.nextToken())) { 
     140               0 :     return false;
     141                 :   }
     142                 : 
     143               0 :   if (tokenizer.lastTokenEndedWithSeparator() || // Trailing comma.
     144               0 :       tokenizer.hasMoreTokens()) {               // More text remains
     145               0 :     return false;
     146                 :   }
     147                 : 
     148               0 :   float xRes = x.GetValueInUserUnits(mSVGElement, nsSVGUtils::X);
     149               0 :   float yRes = y.GetValueInUserUnits(mSVGElement, nsSVGUtils::Y);
     150                 : 
     151               0 :   NS_ENSURE_FINITE2(xRes, yRes, false);
     152                 : 
     153               0 :   aXVal = xRes;
     154               0 :   aYVal = yRes;
     155               0 :   return true;
     156                 : }
     157                 : 
     158                 : //----------------------------------------------------------------------
     159                 : // MotionValueParser methods
     160                 : nsresult
     161               0 : SVGMotionSMILPathUtils::MotionValueParser::
     162                 :   Parse(const nsAString& aValueStr)
     163                 : {
     164                 :   bool success;
     165               0 :   if (!mPathGenerator->HaveReceivedCommands()) {
     166                 :     // Interpret first value in "values" attribute as the path's initial MoveTo
     167               0 :     success = mPathGenerator->MoveToAbsolute(aValueStr);
     168               0 :     if (success) {
     169               0 :       success = !!mPointDistances->AppendElement(0.0);
     170                 :     }
     171                 :   } else {
     172                 :     double dist;
     173               0 :     success = mPathGenerator->LineToAbsolute(aValueStr, dist);
     174               0 :     if (success) {
     175               0 :       mDistanceSoFar += dist;
     176               0 :       success = !!mPointDistances->AppendElement(mDistanceSoFar);
     177                 :     }
     178                 :   }
     179               0 :   return success ? NS_OK : NS_ERROR_FAILURE;
     180                 : }
     181                 : 
     182                 : } // namespace mozilla

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