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 : #ifndef MOZILLA_SVGMOTIONSMILANIMATIONFUNCTION_H_
39 : #define MOZILLA_SVGMOTIONSMILANIMATIONFUNCTION_H_
40 :
41 : #include "gfxPath.h" // for gfxFlattenedPath
42 : #include "nsAutoPtr.h"
43 : #include "nsSMILAnimationFunction.h"
44 : #include "nsTArray.h"
45 : #include "SVGMotionSMILType.h" // for RotateType
46 :
47 : class nsAttrValue;
48 : class nsIAtom;
49 : class nsIContent;
50 : class nsISMILAttr;
51 : class nsSMILValue;
52 : class nsSVGMpathElement;
53 :
54 : namespace mozilla {
55 :
56 : //----------------------------------------------------------------------
57 : // SVGMotionSMILAnimationFunction
58 : //
59 : // Subclass of nsSMILAnimationFunction to support a few extra features offered
60 : // by the <animateMotion> element.
61 : //
62 : class SVGMotionSMILAnimationFunction : public nsSMILAnimationFunction
63 0 : {
64 : public:
65 : SVGMotionSMILAnimationFunction();
66 : NS_OVERRIDE virtual bool SetAttr(nsIAtom* aAttribute,
67 : const nsAString& aValue,
68 : nsAttrValue& aResult,
69 : nsresult* aParseResult = nsnull);
70 : NS_OVERRIDE virtual bool UnsetAttr(nsIAtom* aAttribute);
71 :
72 : // Method to allow our owner-element to signal us when our <mpath>
73 : // has changed or been added/removed. When that happens, we need to
74 : // mark ourselves as changed so we'll get recomposed, and mark our path data
75 : // as stale so it'll get regenerated (regardless of mPathSourceType, since
76 : // <mpath> trumps all the other sources of path data)
77 0 : void MpathChanged() { mIsPathStale = mHasChanged = true; }
78 :
79 : protected:
80 : enum PathSourceType {
81 : // NOTE: Ordering matters here. Higher-priority path-descriptors should
82 : // have higher enumerated values
83 : ePathSourceType_None, // uninitialized or not applicable
84 : ePathSourceType_ByAttr, // by or from-by animation
85 : ePathSourceType_ToAttr, // to or from-to animation
86 : ePathSourceType_ValuesAttr,
87 : ePathSourceType_PathAttr,
88 : ePathSourceType_Mpath
89 : };
90 :
91 : NS_OVERRIDE virtual nsSMILCalcMode GetCalcMode() const;
92 : NS_OVERRIDE virtual nsresult GetValues(const nsISMILAttr& aSMILAttr,
93 : nsSMILValueArray& aResult);
94 : NS_OVERRIDE virtual void CheckValueListDependentAttrs(PRUint32 aNumValues);
95 :
96 : NS_OVERRIDE virtual bool IsToAnimation() const;
97 :
98 : void CheckKeyPoints();
99 : nsresult SetKeyPoints(const nsAString& aKeyPoints, nsAttrValue& aResult);
100 : void UnsetKeyPoints();
101 : nsresult SetRotate(const nsAString& aRotate, nsAttrValue& aResult);
102 : void UnsetRotate();
103 :
104 : // Helpers for GetValues
105 : void MarkStaleIfAttributeAffectsPath(nsIAtom* aAttribute);
106 : void RebuildPathAndVertices(const nsIContent* aContextElem);
107 : void RebuildPathAndVerticesFromMpathElem(nsSVGMpathElement* aMpathElem);
108 : void RebuildPathAndVerticesFromPathAttr();
109 : void RebuildPathAndVerticesFromBasicAttrs(const nsIContent* aContextElem);
110 : bool GenerateValuesForPathAndPoints(gfxFlattenedPath* aPath,
111 : bool aIsKeyPoints,
112 : nsTArray<double>& aPointDistances,
113 : nsTArray<nsSMILValue>& aResult);
114 :
115 : // Members
116 : // -------
117 : nsTArray<double> mKeyPoints; // parsed from "keyPoints" attribute.
118 :
119 : RotateType mRotateType; // auto, auto-reverse, or explicit.
120 : float mRotateAngle; // the angle value, if explicit.
121 :
122 : PathSourceType mPathSourceType; // source of our gfxFlattenedPath.
123 : nsRefPtr<gfxFlattenedPath> mPath; // representation of motion path.
124 : nsTArray<double> mPathVertices; // distances of vertices along path.
125 :
126 : bool mIsPathStale;
127 : };
128 :
129 : } // namespace mozilla
130 :
131 : #endif // MOZILLA_SVGMOTIONSMILANIMATIONFUNCTION_H_
|