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) 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 : /* implementation of nsISMILType for use by <animateMotion> element */
39 :
40 : #ifndef MOZILLA_SVGMOTIONSMILTYPE_H_
41 : #define MOZILLA_SVGMOTIONSMILTYPE_H_
42 :
43 : #include "gfxMatrix.h"
44 : #include "nsISMILType.h"
45 :
46 : class gfxFlattenedPath;
47 : class nsSMILValue;
48 :
49 : namespace mozilla {
50 :
51 : /**
52 : * MotionRotateType: Enum to indicate the type of our "rotate" attribute.
53 : */
54 : enum RotateType {
55 : eRotateType_Explicit, // for e.g. rotate="45"/"45deg"/"0.785rad"
56 : eRotateType_Auto, // for rotate="auto"
57 : eRotateType_AutoReverse // for rotate="auto-reverse"
58 : };
59 :
60 : /**
61 : * SVGMotionSMILType: Implements the nsISMILType interface for SMIL animations
62 : * from <animateMotion>.
63 : *
64 : * NOTE: Even though there's technically no "motion" attribute, we behave in
65 : * many ways as if there were, for simplicity.
66 : */
67 : class SVGMotionSMILType : public nsISMILType
68 : {
69 : public:
70 : // Singleton for nsSMILValue objects to hold onto.
71 : static SVGMotionSMILType sSingleton;
72 :
73 : protected:
74 : // nsISMILType Methods
75 : // -------------------
76 : virtual void Init(nsSMILValue& aValue) const;
77 : virtual void Destroy(nsSMILValue& aValue) const;
78 : virtual nsresult Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const;
79 : virtual bool IsEqual(const nsSMILValue& aLeft,
80 : const nsSMILValue& aRight) const;
81 : virtual nsresult Add(nsSMILValue& aDest,
82 : const nsSMILValue& aValueToAdd,
83 : PRUint32 aCount) const;
84 : virtual nsresult SandwichAdd(nsSMILValue& aDest,
85 : const nsSMILValue& aValueToAdd) const;
86 : virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
87 : const nsSMILValue& aTo,
88 : double& aDistance) const;
89 : virtual nsresult Interpolate(const nsSMILValue& aStartVal,
90 : const nsSMILValue& aEndVal,
91 : double aUnitDistance,
92 : nsSMILValue& aResult) const;
93 : public:
94 : // Used to generate a transform matrix from an <animateMotion> nsSMILValue.
95 : static gfxMatrix CreateMatrix(const nsSMILValue& aSMILVal);
96 :
97 : // Used to generate a nsSMILValue for the point at the given distance along
98 : // the given path.
99 : static nsSMILValue ConstructSMILValue(gfxFlattenedPath* aPath,
100 : float aDist,
101 : RotateType aRotateType,
102 : float aRotateAngle);
103 :
104 : private:
105 : // Private constructor & destructor: prevent instances beyond my singleton,
106 : // and prevent others from deleting my singleton.
107 1464 : SVGMotionSMILType() {}
108 1487 : ~SVGMotionSMILType() {}
109 : };
110 :
111 : } // namespace mozilla
112 :
113 : #endif // MOZILLA_SVGMOTIONSMILTYPE_H_
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