1 /* 2 * Copyright (C) 2012 Adobe Systems Incorporated. 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 * 8 * 1. Redistributions of source code must retain the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials 14 * provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef ClipPathOperation_h 31 #define ClipPathOperation_h 32 33 #include "core/rendering/style/BasicShapes.h" 34 #include "platform/graphics/Path.h" 35 #include "wtf/OwnPtr.h" 36 #include "wtf/PassOwnPtr.h" 37 #include "wtf/RefCounted.h" 38 #include "wtf/text/WTFString.h" 39 40 namespace blink { 41 42 class ClipPathOperation : public RefCounted<ClipPathOperation> { 43 public: 44 enum OperationType { 45 REFERENCE, 46 SHAPE 47 }; 48 ~ClipPathOperation()49 virtual ~ClipPathOperation() { } 50 51 virtual bool operator==(const ClipPathOperation&) const = 0; 52 bool operator!=(const ClipPathOperation& o) const { return !(*this == o); } 53 type()54 OperationType type() const { return m_type; } isSameType(const ClipPathOperation & o)55 bool isSameType(const ClipPathOperation& o) const { return o.type() == m_type; } 56 57 protected: ClipPathOperation(OperationType type)58 ClipPathOperation(OperationType type) 59 : m_type(type) 60 { 61 } 62 63 OperationType m_type; 64 }; 65 66 class ReferenceClipPathOperation FINAL : public ClipPathOperation { 67 public: create(const String & url,const AtomicString & fragment)68 static PassRefPtr<ReferenceClipPathOperation> create(const String& url, const AtomicString& fragment) 69 { 70 return adoptRef(new ReferenceClipPathOperation(url, fragment)); 71 } 72 url()73 const String& url() const { return m_url; } fragment()74 const AtomicString& fragment() const { return m_fragment; } 75 76 private: 77 virtual bool operator==(const ClipPathOperation& o) const OVERRIDE 78 { 79 return isSameType(o) && m_url == static_cast<const ReferenceClipPathOperation&>(o).m_url; 80 } 81 ReferenceClipPathOperation(const String & url,const AtomicString & fragment)82 ReferenceClipPathOperation(const String& url, const AtomicString& fragment) 83 : ClipPathOperation(REFERENCE) 84 , m_url(url) 85 , m_fragment(fragment) 86 { 87 } 88 89 String m_url; 90 AtomicString m_fragment; 91 }; 92 93 DEFINE_TYPE_CASTS(ReferenceClipPathOperation, ClipPathOperation, op, op->type() == ClipPathOperation::REFERENCE, op.type() == ClipPathOperation::REFERENCE); 94 95 class ShapeClipPathOperation FINAL : public ClipPathOperation { 96 public: create(PassRefPtr<BasicShape> shape)97 static PassRefPtr<ShapeClipPathOperation> create(PassRefPtr<BasicShape> shape) 98 { 99 return adoptRef(new ShapeClipPathOperation(shape)); 100 } 101 basicShape()102 const BasicShape* basicShape() const { return m_shape.get(); } isValid()103 bool isValid() const { return m_shape.get(); } windRule()104 WindRule windRule() const { return m_shape->windRule(); } path(const FloatRect & boundingRect)105 const Path& path(const FloatRect& boundingRect) 106 { 107 ASSERT(m_shape); 108 m_path.clear(); 109 m_path = adoptPtr(new Path); 110 m_shape->path(*m_path, boundingRect); 111 return *m_path; 112 } 113 114 private: 115 virtual bool operator==(const ClipPathOperation&) const OVERRIDE; 116 ShapeClipPathOperation(PassRefPtr<BasicShape> shape)117 ShapeClipPathOperation(PassRefPtr<BasicShape> shape) 118 : ClipPathOperation(SHAPE) 119 , m_shape(shape) 120 { 121 } 122 123 RefPtr<BasicShape> m_shape; 124 OwnPtr<Path> m_path; 125 }; 126 127 DEFINE_TYPE_CASTS(ShapeClipPathOperation, ClipPathOperation, op, op->type() == ClipPathOperation::SHAPE, op.type() == ClipPathOperation::SHAPE); 128 129 inline bool ShapeClipPathOperation::operator==(const ClipPathOperation& o) const 130 { 131 if (!isSameType(o)) 132 return false; 133 BasicShape* otherShape = toShapeClipPathOperation(o).m_shape.get(); 134 if (!m_shape.get() || !otherShape) 135 return static_cast<bool>(m_shape.get()) == static_cast<bool>(otherShape); 136 return *m_shape == *otherShape; 137 } 138 139 } 140 141 #endif // ClipPathOperation_h 142