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123 lines
4.5 KiB
C++
123 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla SMIL module.
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*
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* The Initial Developer of the Original Code is the Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Daniel Holbert <dholbert@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef NS_SMILCOMPOSITOR_H_
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#define NS_SMILCOMPOSITOR_H_
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#include "nsIContent.h"
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#include "nsTHashtable.h"
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#include "nsAutoPtr.h"
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#include "nsString.h"
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#include "nsSMILAnimationFunction.h"
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#include "nsSMILCompositorTable.h"
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#include "pldhash.h"
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//----------------------------------------------------------------------
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// nsSMILCompositorKey
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//
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// Hash Key: Animated Element, Attribute Name & Type (CSS vs. XML)
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//
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// NOTE: Need a nsRefPtr to the element, because nsSMILCompositors are kept
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// around for 1 sample after they're used, and they need to make sure their
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// target isn't deleted.
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struct nsSMILCompositorKey
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{
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PRBool Equals(const nsSMILCompositorKey &aOther) const;
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nsRefPtr<nsIContent> mElement;
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nsRefPtr<nsIAtom> mAttributeName; // XXX need to consider namespaces here
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PRPackedBool mIsCSS;
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};
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//----------------------------------------------------------------------
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// nsSMILCompositor
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//
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// Performs the composition of the animation sandwich by combining the results
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// of a series animation functions according to the rules of SMIL composition
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// including prioritising animations.
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class nsSMILCompositor : public PLDHashEntryHdr
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{
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public:
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typedef const nsSMILCompositorKey& KeyType;
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typedef const nsSMILCompositorKey* KeyTypePointer;
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nsSMILCompositor(KeyTypePointer aKey) : mKey(*aKey) { }
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nsSMILCompositor(const nsSMILCompositor& toCopy)
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: mKey(toCopy.mKey),
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mAnimationFunctions(toCopy.mAnimationFunctions)
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{ }
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~nsSMILCompositor() { }
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// PLDHashEntryHdr methods
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KeyType GetKey() const { return mKey; }
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PRBool KeyEquals(KeyTypePointer aKey) const;
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static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
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static PLDHashNumber HashKey(KeyTypePointer aKey);
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enum { ALLOW_MEMMOVE = PR_FALSE };
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// Adds the given animation function to this Compositor's list of functions
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void AddAnimationFunction(nsSMILAnimationFunction* aFunc);
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// Calls ComposeAttribute() on each nsSMILCompositor in the given hashset
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static void ComposeAttributes(nsSMILCompositorTable& aCompositorTable);
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// Cycle-collection support
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void Traverse(nsCycleCollectionTraversalCallback* aCallback);
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private:
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// Composes the attribute's current value with the list of animation
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// functions, and assigns the resulting value to this compositor's target
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// attribute.
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void ComposeAttribute();
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// Static callback methods
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PR_STATIC_CALLBACK(PLDHashOperator) DoComposeAttribute(
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nsSMILCompositor* aCompositor, void *aData);
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// The hash key (element, attribute name, isCSS)
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nsSMILCompositorKey mKey;
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// Hash Value: List of animation functions that animate the specified
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// attribute
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// ---------------------------------------------------------------
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nsTArray<nsSMILAnimationFunction*> mAnimationFunctions;
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};
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#endif // NS_SMILCOMPOSITOR_H_
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