1 : /* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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 nsAnimationManager, an implementation of part
16 : * of css3-animations.
17 : *
18 : * The Initial Developer of the Original Code is the Mozilla Foundation.
19 : * Portions created by the Initial Developer are Copyright (C) 2011
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 : #ifndef nsAnimationManager_h_
39 : #define nsAnimationManager_h_
40 :
41 : #include "AnimationCommon.h"
42 : #include "nsCSSPseudoElements.h"
43 : #include "nsStyleContext.h"
44 : #include "nsDataHashtable.h"
45 : #include "nsGUIEvent.h"
46 : #include "mozilla/TimeStamp.h"
47 : #include "nsThreadUtils.h"
48 :
49 : class nsCSSKeyframesRule;
50 : struct AnimationPropertySegment;
51 : struct ElementAnimation;
52 : struct ElementAnimations;
53 :
54 : namespace mozilla {
55 : namespace css {
56 : class Declaration;
57 : }
58 : }
59 :
60 : class nsAnimationManager : public mozilla::css::CommonAnimationManager
61 0 : {
62 : public:
63 0 : nsAnimationManager(nsPresContext *aPresContext)
64 : : mozilla::css::CommonAnimationManager(aPresContext),
65 0 : mKeyframesListIsDirty(true)
66 : {
67 0 : mKeyframesRules.Init(16); // FIXME: make infallible!
68 0 : }
69 :
70 0 : struct AnimationEventInfo {
71 : nsRefPtr<mozilla::dom::Element> mElement;
72 : nsAnimationEvent mEvent;
73 :
74 0 : AnimationEventInfo(mozilla::dom::Element *aElement,
75 : const nsString& aAnimationName,
76 : PRUint32 aMessage, mozilla::TimeDuration aElapsedTime)
77 : : mElement(aElement),
78 0 : mEvent(true, aMessage, aAnimationName, aElapsedTime.ToSeconds())
79 : {
80 0 : }
81 :
82 : // nsAnimationEvent doesn't support copy-construction, so we need
83 : // to ourselves in order to work with nsTArray
84 0 : AnimationEventInfo(const AnimationEventInfo &aOther)
85 : : mElement(aOther.mElement),
86 : mEvent(true, aOther.mEvent.message,
87 0 : aOther.mEvent.animationName, aOther.mEvent.elapsedTime)
88 : {
89 0 : }
90 : };
91 :
92 : // nsIStyleRuleProcessor (parts)
93 : virtual void RulesMatching(ElementRuleProcessorData* aData);
94 : virtual void RulesMatching(PseudoElementRuleProcessorData* aData);
95 : virtual void RulesMatching(AnonBoxRuleProcessorData* aData);
96 : #ifdef MOZ_XUL
97 : virtual void RulesMatching(XULTreeRuleProcessorData* aData);
98 : #endif
99 : virtual NS_MUST_OVERRIDE size_t
100 : SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const MOZ_OVERRIDE;
101 : virtual NS_MUST_OVERRIDE size_t
102 : SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const MOZ_OVERRIDE;
103 :
104 : // nsARefreshObserver
105 : virtual void WillRefresh(mozilla::TimeStamp aTime);
106 :
107 : /**
108 : * Return the style rule that RulesMatching should add for
109 : * aStyleContext. This might be different from what RulesMatching
110 : * actually added during aStyleContext's construction because the
111 : * element's animation-name may have changed. (However, this does
112 : * return null during the non-animation restyling phase, as
113 : * RulesMatching does.)
114 : *
115 : * aStyleContext may be a style context for aElement or for its
116 : * :before or :after pseudo-element.
117 : */
118 : nsIStyleRule* CheckAnimationRule(nsStyleContext* aStyleContext,
119 : mozilla::dom::Element* aElement);
120 :
121 0 : void KeyframesListIsDirty() {
122 0 : mKeyframesListIsDirty = true;
123 0 : }
124 :
125 : typedef InfallibleTArray<AnimationEventInfo> EventArray;
126 :
127 : /**
128 : * Dispatch any pending events. We accumulate animationend and
129 : * animationiteration events only during refresh driver notifications
130 : * (and dispatch them at the end of such notifications), but we
131 : * accumulate animationstart events at other points when style
132 : * contexts are created.
133 : */
134 0 : void DispatchEvents() {
135 : // Fast-path the common case: no events
136 0 : if (!mPendingEvents.IsEmpty()) {
137 0 : DoDispatchEvents();
138 : }
139 0 : }
140 :
141 : private:
142 : ElementAnimations* GetElementAnimations(mozilla::dom::Element *aElement,
143 : nsCSSPseudoElements::Type aPseudoType,
144 : bool aCreateIfNeeded);
145 : void BuildAnimations(nsStyleContext* aStyleContext,
146 : InfallibleTArray<ElementAnimation>& aAnimations);
147 : bool BuildSegment(InfallibleTArray<AnimationPropertySegment>& aSegments,
148 : nsCSSProperty aProperty, const nsAnimation& aAnimation,
149 : float aFromKey, nsStyleContext* aFromContext,
150 : mozilla::css::Declaration* aFromDeclaration,
151 : float aToKey, nsStyleContext* aToContext);
152 : nsIStyleRule* GetAnimationRule(mozilla::dom::Element* aElement,
153 : nsCSSPseudoElements::Type aPseudoType);
154 :
155 : nsCSSKeyframesRule* KeyframesRuleFor(const nsSubstring& aName);
156 :
157 : // The guts of DispatchEvents
158 : void DoDispatchEvents();
159 :
160 : bool mKeyframesListIsDirty;
161 : nsDataHashtable<nsStringHashKey, nsCSSKeyframesRule*> mKeyframesRules;
162 :
163 : EventArray mPendingEvents;
164 : };
165 :
166 : #endif /* !defined(nsAnimationManager_h_) */
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