Valentin Shergin 811d5bfc73 Introducing LayoutableShadowNode
Summary: LayoutableShadowNode defines a unified interface (and set of primitives) essential for laying out shadow nodes.

Reviewed By: fkgozali

Differential Revision: D7230668

fbshipit-source-id: d8c1772d4c3bd1f87c41f7240a39aecebf3696ae
2018-03-18 19:17:39 -07:00

37 lines
881 B
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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <unordered_set>
#include <fabric/core/LayoutableShadowNode.h>
#include <fabric/graphics/Geometry.h>
namespace facebook {
namespace react {
/*
* LayoutContext: Additional contextual information useful for particular
* layout approaches.
*/
struct LayoutContext {
/*
* Compound absolute position of the node relative to the root node.
*/
Point absolutePosition {0, 0};
/*
* Collection of shadow nodes which were chanded during the layout pass,
* and which associated views might need to be updated.
*/
std::shared_ptr<std::unordered_set<SharedLayoutableShadowNode>> affectedShadowNodes {nullptr};
};
} // namespace react
} // namespace facebook