Files
react-native/ReactCommon/react/renderer/core/LayoutContext.h
T
Samuel Susla 154ce78972 Take viewport offset into account in UIManager.measureInWindow
Summary:
Changelog: [Internal]

Fabric's UIManager.measureInWindow didn't take viewport's offset into account. This diff fixes it by including viewport's offset in `LayoutContext`.

Reviewed By: JoshuaGross

Differential Revision: D23021903

fbshipit-source-id: 9106a8789d66fe19d8cb0a9378ee5bc8f2c83005
2020-08-10 12:52:23 -07:00

68 lines
2.1 KiB
C++

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* 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 <vector>
#include <react/renderer/core/LayoutableShadowNode.h>
#include <react/renderer/graphics/Geometry.h>
namespace facebook {
namespace react {
/*
* LayoutContext: Additional contextual information useful for particular
* layout approaches.
*/
struct LayoutContext {
/*
* Reflects the scale factor needed to convert from the logical coordinate
* space into the device coordinate space of the physical screen.
* Some layout systems *might* use this to round layout metric values
* to `pixel value`.
*/
Float pointScaleFactor{1.0};
/*
* A raw pointer to list of raw pointers to `LayoutableShadowNode`s that were
* affected by the re-layout pass. If the field is not `nullptr`, a particular
* `LayoutableShadowNode` implementation should add mutated nodes to this
* list. The order is not specified. Nothing in this collection is owing (on
* purpose), make sure the memory is managed responsibly.
*/
std::vector<LayoutableShadowNode const *> *affectedNodes{};
/*
* Flag indicating whether in reassignment of direction
* aware properties should take place. If yes, following
* reassignment will occur in RTL context.
* - (left|right) → (start|end)
* - margin(Left|Right) → margin(Start|End)
* - padding(Left|Right) → padding(Start|End)
* - borderTop(Left|Right)Radius → borderTop(Start|End)Radius
* - borderBottom(Left|Right)Radius → borderBottom(Start|End)Radius
* - border(Left|Right)Width → border(Start|End)Width
* - border(Left|Right)Color → border(Start|End)Color
*/
bool swapLeftAndRightInRTL{false};
/*
* Multiplier used to change size of the font in surface.
*/
Float fontSizeMultiplier{1.0};
/*
* Viewport offset is offset of the React Native's root view.
* If React Native takes up entire screen, it will be {0, 0}.
*/
Point viewportOffset{};
};
} // namespace react
} // namespace facebook