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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
* Copyright (C) 2014 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LayoutGeometryMapStep_h
#define LayoutGeometryMapStep_h
#include "platform/geometry/LayoutSize.h"
#include "platform/transforms/TransformationMatrix.h"
#include "wtf/Allocator.h"
#include "wtf/OwnPtr.h"
namespace blink {
class LayoutObject;
enum GeometryInfoFlag {
AccumulatingTransform = 1 << 0,
IsNonUniform = 1 << 1, // Mapping depends on the input point, e.g. because of CSS columns.
IsFixedPosition = 1 << 2,
HasTransform = 1 << 3,
};
typedef unsigned GeometryInfoFlags;
// Stores data about how to map from one layoutObject to its container.
struct LayoutGeometryMapStep {
DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
LayoutGeometryMapStep(const LayoutGeometryMapStep& o)
: m_layoutObject(o.m_layoutObject)
, m_offset(o.m_offset)
, m_offsetForFixedPosition(o.m_offsetForFixedPosition)
, m_flags(o.m_flags)
{
ASSERT(!o.m_transform);
}
LayoutGeometryMapStep(const LayoutObject* layoutObject, GeometryInfoFlags flags)
: m_layoutObject(layoutObject)
, m_flags(flags)
{
}
const LayoutObject* m_layoutObject;
LayoutSize m_offset;
OwnPtr<TransformationMatrix> m_transform; // Includes offset if non-null.
LayoutSize m_offsetForFixedPosition;
GeometryInfoFlags m_flags;
};
} // namespace blink
WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::LayoutGeometryMapStep);
#endif // LayoutGeometryMapStep_h
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