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
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34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "SVGOrientSMILType.h"
38 : #include "nsSMILValue.h"
39 : #include "nsSVGViewBox.h"
40 : #include "nsSVGAngle.h"
41 : #include "nsIDOMSVGMarkerElement.h"
42 : #include "nsDebug.h"
43 : #include <math.h>
44 :
45 : namespace mozilla {
46 :
47 1464 : /*static*/ SVGOrientSMILType SVGOrientSMILType::sSingleton;
48 :
49 : void
50 0 : SVGOrientSMILType::Init(nsSMILValue& aValue) const
51 : {
52 0 : NS_ABORT_IF_FALSE(aValue.IsNull(), "Unexpected value type");
53 :
54 0 : aValue.mU.mOrient.mAngle = 0.0f;
55 0 : aValue.mU.mOrient.mUnit = nsIDOMSVGAngle::SVG_ANGLETYPE_UNSPECIFIED;
56 0 : aValue.mU.mOrient.mOrientType = nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE;
57 0 : aValue.mType = this;
58 0 : }
59 :
60 : void
61 0 : SVGOrientSMILType::Destroy(nsSMILValue& aValue) const
62 : {
63 0 : NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value.");
64 0 : aValue.mU.mPtr = nsnull;
65 0 : aValue.mType = &nsSMILNullType::sSingleton;
66 0 : }
67 :
68 : nsresult
69 0 : SVGOrientSMILType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
70 : {
71 0 : NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types.");
72 0 : NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value.");
73 :
74 0 : aDest.mU.mOrient.mAngle = aSrc.mU.mOrient.mAngle;
75 0 : aDest.mU.mOrient.mUnit = aSrc.mU.mOrient.mUnit;
76 0 : aDest.mU.mOrient.mOrientType = aSrc.mU.mOrient.mOrientType;
77 0 : return NS_OK;
78 : }
79 :
80 : bool
81 0 : SVGOrientSMILType::IsEqual(const nsSMILValue& aLeft,
82 : const nsSMILValue& aRight) const
83 : {
84 0 : NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
85 0 : NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
86 :
87 : return
88 : aLeft.mU.mOrient.mAngle == aRight.mU.mOrient.mAngle &&
89 : aLeft.mU.mOrient.mUnit == aRight.mU.mOrient.mUnit &&
90 0 : aLeft.mU.mOrient.mOrientType == aRight.mU.mOrient.mOrientType;
91 : }
92 :
93 : nsresult
94 0 : SVGOrientSMILType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
95 : PRUint32 aCount) const
96 : {
97 0 : NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
98 : "Trying to add invalid types");
99 0 : NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
100 :
101 0 : if (aDest.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE ||
102 : aValueToAdd.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE) {
103 : // TODO: it would be nice to be able to add to auto angles
104 0 : return NS_ERROR_FAILURE;
105 : }
106 :
107 : // We may be dealing with two different angle units, so we normalize to
108 : // degrees for the add:
109 : float currentAngle = aDest.mU.mOrient.mAngle *
110 0 : nsSVGAngle::GetDegreesPerUnit(aDest.mU.mOrient.mUnit);
111 : float angleToAdd = aValueToAdd.mU.mOrient.mAngle *
112 0 : nsSVGAngle::GetDegreesPerUnit(aValueToAdd.mU.mOrient.mUnit) *
113 0 : aCount;
114 :
115 : // And then we give the resulting animated value the same units as the value
116 : // that we're animating to/by (i.e. the same as aValueToAdd):
117 : aDest.mU.mOrient.mAngle = (currentAngle + angleToAdd) /
118 0 : nsSVGAngle::GetDegreesPerUnit(aValueToAdd.mU.mOrient.mUnit);
119 0 : aDest.mU.mOrient.mUnit = aValueToAdd.mU.mOrient.mUnit;
120 :
121 0 : return NS_OK;
122 : }
123 :
124 : nsresult
125 0 : SVGOrientSMILType::ComputeDistance(const nsSMILValue& aFrom,
126 : const nsSMILValue& aTo,
127 : double& aDistance) const
128 : {
129 0 : NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
130 0 : NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
131 :
132 0 : if (aFrom.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE ||
133 : aTo.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE) {
134 : // TODO: it would be nice to be able to compute distance with auto angles
135 0 : return NS_ERROR_FAILURE;
136 : }
137 :
138 : // Normalize both to degrees in case they're different angle units:
139 : double from = aFrom.mU.mOrient.mAngle *
140 0 : nsSVGAngle::GetDegreesPerUnit(aFrom.mU.mOrient.mUnit);
141 : double to = aTo.mU.mOrient.mAngle *
142 0 : nsSVGAngle::GetDegreesPerUnit(aTo.mU.mOrient.mUnit);
143 :
144 0 : aDistance = fabs(to - from);
145 :
146 0 : return NS_OK;
147 : }
148 :
149 : nsresult
150 0 : SVGOrientSMILType::Interpolate(const nsSMILValue& aStartVal,
151 : const nsSMILValue& aEndVal,
152 : double aUnitDistance,
153 : nsSMILValue& aResult) const
154 : {
155 0 : NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
156 : "Trying to interpolate different types");
157 0 : NS_PRECONDITION(aStartVal.mType == this,
158 : "Unexpected types for interpolation.");
159 0 : NS_PRECONDITION(aResult.mType == this, "Unexpected result type.");
160 :
161 0 : if (aStartVal.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE ||
162 : aEndVal.mU.mOrient.mOrientType != nsIDOMSVGMarkerElement::SVG_MARKER_ORIENT_ANGLE) {
163 : // TODO: it would be nice to be able to handle auto angles too.
164 0 : return NS_ERROR_FAILURE;
165 : }
166 :
167 : float start = aStartVal.mU.mOrient.mAngle *
168 0 : nsSVGAngle::GetDegreesPerUnit(aStartVal.mU.mOrient.mUnit);
169 : float end = aEndVal.mU.mOrient.mAngle *
170 0 : nsSVGAngle::GetDegreesPerUnit(aEndVal.mU.mOrient.mUnit);
171 0 : float result = (start + (end - start) * aUnitDistance);
172 :
173 : // Again, we use the unit of the to/by value for the result:
174 : aResult.mU.mOrient.mAngle = result /
175 0 : nsSVGAngle::GetDegreesPerUnit(aEndVal.mU.mOrient.mUnit);
176 0 : aResult.mU.mOrient.mUnit = aEndVal.mU.mOrient.mUnit;
177 :
178 0 : return NS_OK;
179 : }
180 :
181 4392 : } // namespace mozilla
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