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 AnimationCommon, common animation code for transitions
16 : * and 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 :
39 : #ifndef mozilla_css_AnimationCommon_h
40 : #define mozilla_css_AnimationCommon_h
41 :
42 : #include "nsIStyleRuleProcessor.h"
43 : #include "nsIStyleRule.h"
44 : #include "nsRefreshDriver.h"
45 : #include "prclist.h"
46 : #include "nsStyleAnimation.h"
47 : #include "nsCSSProperty.h"
48 : #include "mozilla/dom/Element.h"
49 : #include "nsSMILKeySpline.h"
50 : #include "nsStyleStruct.h"
51 :
52 : class nsPresContext;
53 :
54 : namespace mozilla {
55 : namespace css {
56 :
57 : struct CommonElementAnimationData;
58 :
59 : class CommonAnimationManager : public nsIStyleRuleProcessor,
60 : public nsARefreshObserver {
61 : public:
62 : CommonAnimationManager(nsPresContext *aPresContext);
63 : virtual ~CommonAnimationManager();
64 :
65 : // nsISupports
66 : NS_DECL_ISUPPORTS
67 :
68 : // nsIStyleRuleProcessor (parts)
69 : virtual nsRestyleHint HasStateDependentStyle(StateRuleProcessorData* aData);
70 : virtual bool HasDocumentStateDependentStyle(StateRuleProcessorData* aData);
71 : virtual nsRestyleHint
72 : HasAttributeDependentStyle(AttributeRuleProcessorData* aData);
73 : virtual bool MediumFeaturesChanged(nsPresContext* aPresContext);
74 : virtual NS_MUST_OVERRIDE size_t
75 : SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const MOZ_OVERRIDE;
76 : virtual NS_MUST_OVERRIDE size_t
77 : SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const MOZ_OVERRIDE;
78 :
79 : /**
80 : * Notify the manager that the pres context is going away.
81 : */
82 : void Disconnect();
83 :
84 : static bool ExtractComputedValueForTransition(
85 : nsCSSProperty aProperty,
86 : nsStyleContext* aStyleContext,
87 : nsStyleAnimation::Value& aComputedValue);
88 : protected:
89 : friend struct CommonElementAnimationData; // for ElementDataRemoved
90 :
91 : void AddElementData(CommonElementAnimationData* aData);
92 : void ElementDataRemoved();
93 : void RemoveAllElementData();
94 :
95 : PRCList mElementData;
96 : nsPresContext *mPresContext; // weak (non-null from ctor to Disconnect)
97 : };
98 :
99 : /**
100 : * A style rule that maps property-nsStyleAnimation::Value pairs.
101 : */
102 : class AnimValuesStyleRule : public nsIStyleRule
103 0 : {
104 : public:
105 : // nsISupports implementation
106 : NS_DECL_ISUPPORTS
107 :
108 : // nsIStyleRule implementation
109 : virtual void MapRuleInfoInto(nsRuleData* aRuleData);
110 : #ifdef DEBUG
111 : virtual void List(FILE* out = stdout, PRInt32 aIndent = 0) const;
112 : #endif
113 :
114 0 : void AddValue(nsCSSProperty aProperty, nsStyleAnimation::Value &aStartValue)
115 : {
116 0 : PropertyValuePair v = { aProperty, aStartValue };
117 0 : mPropertyValuePairs.AppendElement(v);
118 0 : }
119 :
120 : // Caller must fill in returned value.
121 0 : nsStyleAnimation::Value* AddEmptyValue(nsCSSProperty aProperty)
122 : {
123 0 : PropertyValuePair *p = mPropertyValuePairs.AppendElement();
124 0 : p->mProperty = aProperty;
125 0 : return &p->mValue;
126 : }
127 :
128 0 : struct PropertyValuePair {
129 : nsCSSProperty mProperty;
130 : nsStyleAnimation::Value mValue;
131 : };
132 :
133 : private:
134 : InfallibleTArray<PropertyValuePair> mPropertyValuePairs;
135 : };
136 :
137 0 : class ComputedTimingFunction {
138 : public:
139 : typedef nsTimingFunction::Type Type;
140 : void Init(const nsTimingFunction &aFunction);
141 : double GetValue(double aPortion) const;
142 : private:
143 : Type mType;
144 : nsSMILKeySpline mTimingFunction;
145 : PRUint32 mSteps;
146 : };
147 :
148 : struct CommonElementAnimationData : public PRCList
149 : {
150 0 : CommonElementAnimationData(dom::Element *aElement, nsIAtom *aElementProperty,
151 : CommonAnimationManager *aManager)
152 : : mElement(aElement)
153 : , mElementProperty(aElementProperty)
154 : , mManager(aManager)
155 : #ifdef DEBUG
156 0 : , mCalledPropertyDtor(false)
157 : #endif
158 : {
159 0 : MOZ_COUNT_CTOR(CommonElementAnimationData);
160 0 : PR_INIT_CLIST(this);
161 0 : }
162 0 : ~CommonElementAnimationData()
163 : {
164 0 : NS_ABORT_IF_FALSE(mCalledPropertyDtor,
165 : "must call destructor through element property dtor");
166 0 : MOZ_COUNT_DTOR(CommonElementAnimationData);
167 0 : PR_REMOVE_LINK(this);
168 0 : mManager->ElementDataRemoved();
169 0 : }
170 :
171 0 : void Destroy()
172 : {
173 : // This will call our destructor.
174 0 : mElement->DeleteProperty(mElementProperty);
175 0 : }
176 :
177 : dom::Element *mElement;
178 :
179 : // the atom we use in mElement's prop table (must be a static atom,
180 : // i.e., in an atom list)
181 : nsIAtom *mElementProperty;
182 :
183 : CommonAnimationManager *mManager;
184 :
185 : #ifdef DEBUG
186 : bool mCalledPropertyDtor;
187 : #endif
188 : };
189 :
190 : }
191 : }
192 :
193 : #endif /* !defined(mozilla_css_AnimationCommon_h) */
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