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Diffstat (limited to 'src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h b/src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h new file mode 100644 index 0000000..b7f101b --- /dev/null +++ b/src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h @@ -0,0 +1,122 @@ +/* + Copyright (C) Research In Motion Limited 2009. All rights reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef SynchronizablePropertyController_h +#define SynchronizablePropertyController_h + +#if ENABLE(SVG) +#include "StringHash.h" +#include <wtf/HashMap.h> +#include <wtf/HashSet.h> +#include <wtf/Noncopyable.h> + +namespace WebCore { + +class QualifiedName; +class SVGAnimatedPropertyBase; + +struct SynchronizableProperty { + SynchronizableProperty() + : base(0) + , shouldSynchronize(false) + { + } + + explicit SynchronizableProperty(SVGAnimatedPropertyBase* _base) + : base(_base) + , shouldSynchronize(false) + { + } + + explicit SynchronizableProperty(WTF::HashTableDeletedValueType) + : base(reinterpret_cast<SVGAnimatedPropertyBase*>(-1)) + , shouldSynchronize(false) + { + } + + bool isHashTableDeletedValue() const + { + return base == reinterpret_cast<SVGAnimatedPropertyBase*>(-1); + } + + bool operator==(const SynchronizableProperty& other) const + { + return base == other.base && shouldSynchronize == other.shouldSynchronize; + } + + SVGAnimatedPropertyBase* base; + bool shouldSynchronize; +}; + +struct SynchronizablePropertyHash { + static unsigned hash(const SynchronizableProperty& key) + { + return StringImpl::computeHash(reinterpret_cast<const UChar*>(&key), sizeof(SynchronizableProperty) / sizeof(UChar)); + } + + static bool equal(const SynchronizableProperty& a, const SynchronizableProperty& b) + { + return a == b; + } + + static const bool safeToCompareToEmptyOrDeleted = true; +}; + +struct SynchronizablePropertyHashTraits : WTF::GenericHashTraits<SynchronizableProperty> { + static const bool emptyValueIsZero = true; + + static void constructDeletedValue(SynchronizableProperty& slot) + { + new (&slot) SynchronizableProperty(WTF::HashTableDeletedValue); + } + + static bool isDeletedValue(const SynchronizableProperty& value) + { + return value.isHashTableDeletedValue(); + } +}; + +// Helper class used exclusively by SVGElement to keep track of all animatable properties within a SVGElement, +// and wheter they are supposed to be synchronized or not (depending wheter AnimatedPropertyTearOff's have been created) +class SynchronizablePropertyController : public Noncopyable { +public: + void registerProperty(const QualifiedName&, SVGAnimatedPropertyBase*); + void setPropertyNeedsSynchronization(const QualifiedName&); + + void synchronizeProperty(const String&); + void synchronizeAllProperties(); + + void startAnimation(const String&); + void stopAnimation(const String&); + +private: + friend class SVGElement; + SynchronizablePropertyController(); + +private: + typedef HashSet<SynchronizableProperty, SynchronizablePropertyHash, SynchronizablePropertyHashTraits> Properties; + typedef HashMap<String, Properties> PropertyMap; + + PropertyMap m_map; +}; + +}; + +#endif // ENABLE(SVG) +#endif // SynchronizablePropertyController_h |