The Tor Browser / file comparison
comparison: dom/smil/nsSMILFloatType.cpp
dom/smil/nsSMILFloatType.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
equal
deleted
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replaced
| -1:000000000000 | 0:cd28fd2e9577 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsSMILFloatType.h" | |
| 7 #include "nsSMILValue.h" | |
| 8 #include "nsDebug.h" | |
| 9 #include <math.h> | |
| 10 | |
| 11 void | |
| 12 nsSMILFloatType::Init(nsSMILValue& aValue) const | |
| 13 { | |
| 14 NS_PRECONDITION(aValue.IsNull(), "Unexpected value type"); | |
| 15 aValue.mU.mDouble = 0.0; | |
| 16 aValue.mType = this; | |
| 17 } | |
| 18 | |
| 19 void | |
| 20 nsSMILFloatType::Destroy(nsSMILValue& aValue) const | |
| 21 { | |
| 22 NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value"); | |
| 23 aValue.mU.mDouble = 0.0; | |
| 24 aValue.mType = nsSMILNullType::Singleton(); | |
| 25 } | |
| 26 | |
| 27 nsresult | |
| 28 nsSMILFloatType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const | |
| 29 { | |
| 30 NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types"); | |
| 31 NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value"); | |
| 32 aDest.mU.mDouble = aSrc.mU.mDouble; | |
| 33 return NS_OK; | |
| 34 } | |
| 35 | |
| 36 bool | |
| 37 nsSMILFloatType::IsEqual(const nsSMILValue& aLeft, | |
| 38 const nsSMILValue& aRight) const | |
| 39 { | |
| 40 NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types"); | |
| 41 NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value"); | |
| 42 | |
| 43 return aLeft.mU.mDouble == aRight.mU.mDouble; | |
| 44 } | |
| 45 | |
| 46 nsresult | |
| 47 nsSMILFloatType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd, | |
| 48 uint32_t aCount) const | |
| 49 { | |
| 50 NS_PRECONDITION(aValueToAdd.mType == aDest.mType, | |
| 51 "Trying to add invalid types"); | |
| 52 NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type"); | |
| 53 aDest.mU.mDouble += aValueToAdd.mU.mDouble * aCount; | |
| 54 return NS_OK; | |
| 55 } | |
| 56 | |
| 57 nsresult | |
| 58 nsSMILFloatType::ComputeDistance(const nsSMILValue& aFrom, | |
| 59 const nsSMILValue& aTo, | |
| 60 double& aDistance) const | |
| 61 { | |
| 62 NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types"); | |
| 63 NS_PRECONDITION(aFrom.mType == this, "Unexpected source type"); | |
| 64 | |
| 65 const double &from = aFrom.mU.mDouble; | |
| 66 const double &to = aTo.mU.mDouble; | |
| 67 | |
| 68 aDistance = fabs(to - from); | |
| 69 | |
| 70 return NS_OK; | |
| 71 } | |
| 72 | |
| 73 nsresult | |
| 74 nsSMILFloatType::Interpolate(const nsSMILValue& aStartVal, | |
| 75 const nsSMILValue& aEndVal, | |
| 76 double aUnitDistance, | |
| 77 nsSMILValue& aResult) const | |
| 78 { | |
| 79 NS_PRECONDITION(aStartVal.mType == aEndVal.mType, | |
| 80 "Trying to interpolate different types"); | |
| 81 NS_PRECONDITION(aStartVal.mType == this, | |
| 82 "Unexpected types for interpolation"); | |
| 83 NS_PRECONDITION(aResult.mType == this, "Unexpected result type"); | |
| 84 | |
| 85 const double &startVal = aStartVal.mU.mDouble; | |
| 86 const double &endVal = aEndVal.mU.mDouble; | |
| 87 | |
| 88 aResult.mU.mDouble = (startVal + (endVal - startVal) * aUnitDistance); | |
| 89 | |
| 90 return NS_OK; | |
| 91 } |
