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/platform/graphics/Path.h" 34 #include "core/rendering/style/BasicShapes.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 WebCore { 41 42 class ClipPathOperation : public RefCounted<ClipPathOperation> { 43 public: 44 enum OperationType { 45 REFERENCE, 46 SHAPE 47 }; 48 49 virtual ~ClipPathOperation() { } 50 51 virtual bool operator==(const ClipPathOperation&) const = 0; 52 bool operator!=(const ClipPathOperation& o) const { return !(*this == o); } 53 54 virtual OperationType getOperationType() const { return m_type; } 55 virtual bool isSameType(const ClipPathOperation& o) const { return o.getOperationType() == m_type; } 56 57 protected: 58 ClipPathOperation(OperationType type) 59 : m_type(type) 60 { 61 } 62 63 OperationType m_type; 64 }; 65 66 class ReferenceClipPathOperation : public ClipPathOperation { 67 public: 68 static PassRefPtr<ReferenceClipPathOperation> create(const String& url, const String& fragment) 69 { 70 return adoptRef(new ReferenceClipPathOperation(url, fragment)); 71 } 72 73 const String& url() const { return m_url; } 74 const String& fragment() const { return m_fragment; } 75 76 private: 77 virtual bool operator==(const ClipPathOperation& o) const 78 { 79 if (!isSameType(o)) 80 return false; 81 const ReferenceClipPathOperation* other = static_cast<const ReferenceClipPathOperation*>(&o); 82 return m_url == other->m_url; 83 } 84 85 ReferenceClipPathOperation(const String& url, const String& fragment) 86 : ClipPathOperation(REFERENCE) 87 , m_url(url) 88 , m_fragment(fragment) 89 { 90 } 91 92 String m_url; 93 String m_fragment; 94 }; 95 96 class ShapeClipPathOperation : public ClipPathOperation { 97 public: 98 static PassRefPtr<ShapeClipPathOperation> create(PassRefPtr<BasicShape> shape) 99 { 100 return adoptRef(new ShapeClipPathOperation(shape)); 101 } 102 103 const BasicShape* basicShape() const { return m_shape.get(); } 104 WindRule windRule() const { return m_shape->windRule(); } 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& o) const 116 { 117 if (!isSameType(o)) 118 return false; 119 const ShapeClipPathOperation* other = static_cast<const ShapeClipPathOperation*>(&o); 120 return m_shape == other->m_shape; 121 } 122 123 ShapeClipPathOperation(PassRefPtr<BasicShape> shape) 124 : ClipPathOperation(SHAPE) 125 , m_shape(shape) 126 { 127 } 128 129 RefPtr<BasicShape> m_shape; 130 OwnPtr<Path> m_path; 131 }; 132 } 133 134 #endif // ClipPathOperation_h 135