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https://github.com/zhigang1992/react-native.git
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ac9195a506
Summary: Previously the pointScaleFactor field was not being compared properly in LayoutMetrics equality method. This diff fixes that Reviewed By: shergin Differential Revision: D15303555 fbshipit-source-id: 8863e9e1fbad15b43400afc32b97bf6d252cbe55
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <react/core/LayoutPrimitives.h>
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#include <react/graphics/Geometry.h>
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namespace facebook {
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namespace react {
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/*
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* Describes results of layout process for partucular shadow node.
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*/
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struct LayoutMetrics {
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Rect frame;
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EdgeInsets contentInsets{0};
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EdgeInsets borderWidth{0};
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DisplayType displayType{DisplayType::Flex};
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LayoutDirection layoutDirection{LayoutDirection::Undefined};
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Float pointScaleFactor{1.0};
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Rect getContentFrame() const {
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return Rect{
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Point{contentInsets.left, contentInsets.top},
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Size{frame.size.width - contentInsets.left - contentInsets.right,
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frame.size.height - contentInsets.top - contentInsets.bottom}};
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}
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bool operator==(const LayoutMetrics &rhs) const {
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return std::tie(
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this->frame,
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this->contentInsets,
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this->borderWidth,
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this->displayType,
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this->layoutDirection,
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this->pointScaleFactor) ==
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std::tie(
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rhs.frame,
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rhs.contentInsets,
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rhs.borderWidth,
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rhs.displayType,
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rhs.layoutDirection,
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rhs.pointScaleFactor);
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}
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bool operator!=(const LayoutMetrics &rhs) const {
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return !(*this == rhs);
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}
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};
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/*
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* Represents some undefined, not-yet-computed or meaningless value of
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* `LayoutMetrics` type.
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*/
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static const LayoutMetrics EmptyLayoutMetrics = {/* .frame = */ {
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/* .origin = */ {0, 0},
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/* .size = */ {-1, -1},
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}};
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} // namespace react
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} // namespace facebook
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