1/* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef FilterOperations_h 27#define FilterOperations_h 28 29#if ENABLE(CSS_FILTERS) 30 31#include "FilterOperation.h" 32#include "IntRectExtent.h" 33#include <wtf/RefPtr.h> 34#include <wtf/Vector.h> 35 36namespace WebCore { 37 38typedef IntRectExtent FilterOutsets; 39 40class FilterOperations { 41 WTF_MAKE_FAST_ALLOCATED; 42public: 43 FilterOperations(); 44 FilterOperations(const FilterOperations& other) { *this = other; } 45 46 FilterOperations& operator=(const FilterOperations&); 47 48 bool operator==(const FilterOperations&) const; 49 bool operator!=(const FilterOperations& o) const 50 { 51 return !(*this == o); 52 } 53 54 void clear() 55 { 56 m_operations.clear(); 57 } 58 59 Vector<RefPtr<FilterOperation> >& operations() { return m_operations; } 60 const Vector<RefPtr<FilterOperation> >& operations() const { return m_operations; } 61 62 bool isEmpty() const { return !m_operations.size(); } 63 size_t size() const { return m_operations.size(); } 64 const FilterOperation* at(size_t index) const { return index < m_operations.size() ? m_operations.at(index).get() : 0; } 65 66 bool operationsMatch(const FilterOperations&) const; 67 68 bool hasOutsets() const; 69 FilterOutsets outsets() const; 70 71 bool hasFilterThatAffectsOpacity() const; 72 bool hasFilterThatMovesPixels() const; 73 74#if ENABLE(CSS_SHADERS) 75 bool hasCustomFilter() const; 76#endif 77 bool hasReferenceFilter() const; 78private: 79 Vector<RefPtr<FilterOperation> > m_operations; 80}; 81 82} // namespace WebCore 83 84#endif // ENABLE(CSS_FILTERS) 85 86#endif // FilterOperations_h 87