1 /* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * Copyright (C) 2014 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef RenderGeometryMapStep_h 28 #define RenderGeometryMapStep_h 29 30 #include "platform/geometry/LayoutSize.h" 31 #include "platform/transforms/TransformationMatrix.h" 32 #include "wtf/OwnPtr.h" 33 34 namespace blink { 35 36 class RenderObject; 37 38 // Stores data about how to map from one renderer to its container. 39 struct RenderGeometryMapStep { RenderGeometryMapStepRenderGeometryMapStep40 RenderGeometryMapStep(const RenderGeometryMapStep& o) 41 : m_renderer(o.m_renderer) 42 , m_offset(o.m_offset) 43 , m_offsetForFixedPosition(o.m_offsetForFixedPosition) 44 , m_accumulatingTransform(o.m_accumulatingTransform) 45 , m_isNonUniform(o.m_isNonUniform) 46 , m_isFixedPosition(o.m_isFixedPosition) 47 , m_hasTransform(o.m_hasTransform) 48 { 49 ASSERT(!o.m_transform); 50 } RenderGeometryMapStepRenderGeometryMapStep51 RenderGeometryMapStep(const RenderObject* renderer, bool accumulatingTransform, bool isNonUniform, bool isFixedPosition, bool hasTransform) 52 : m_renderer(renderer) 53 , m_accumulatingTransform(accumulatingTransform) 54 , m_isNonUniform(isNonUniform) 55 , m_isFixedPosition(isFixedPosition) 56 , m_hasTransform(hasTransform) 57 { 58 } 59 const RenderObject* m_renderer; 60 LayoutSize m_offset; 61 OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null. 62 LayoutSize m_offsetForFixedPosition; 63 bool m_accumulatingTransform; 64 bool m_isNonUniform; // Mapping depends on the input point, e.g. because of CSS columns. 65 bool m_isFixedPosition; 66 bool m_hasTransform; 67 }; 68 69 } // namespace blink 70 71 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::RenderGeometryMapStep); 72 73 #endif // RenderGeometryMapStep_h 74