586 lines
17 KiB
C++
586 lines
17 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.
|
|
*/
|
|
|
|
#include "YGNode.h"
|
|
#include <algorithm>
|
|
#include <iostream>
|
|
#include "CompactValue.h"
|
|
#include "Utils.h"
|
|
|
|
using namespace facebook;
|
|
using facebook::yoga::detail::CompactValue;
|
|
|
|
YGNode::YGNode(YGNode&& node) {
|
|
context_ = node.context_;
|
|
flags_ = node.flags_;
|
|
measure_ = node.measure_;
|
|
baseline_ = node.baseline_;
|
|
print_ = node.print_;
|
|
dirtied_ = node.dirtied_;
|
|
style_ = node.style_;
|
|
layout_ = node.layout_;
|
|
lineIndex_ = node.lineIndex_;
|
|
owner_ = node.owner_;
|
|
children_ = std::move(node.children_);
|
|
config_ = node.config_;
|
|
resolvedDimensions_ = node.resolvedDimensions_;
|
|
for (auto c : children_) {
|
|
c->setOwner(c);
|
|
}
|
|
}
|
|
|
|
YGNode::YGNode(const YGNode& node, YGConfigRef config) : YGNode{node} {
|
|
config_ = config;
|
|
if (config->useWebDefaults) {
|
|
useWebDefaults();
|
|
}
|
|
}
|
|
|
|
void YGNode::print(void* printContext) {
|
|
if (print_.noContext != nullptr) {
|
|
if (flags_.at<printUsesContext_>()) {
|
|
print_.withContext(this, printContext);
|
|
} else {
|
|
print_.noContext(this);
|
|
}
|
|
}
|
|
}
|
|
|
|
YGFloatOptional YGNode::getLeadingPosition(
|
|
const YGFlexDirection axis,
|
|
const float axisSize) const {
|
|
if (YGFlexDirectionIsRow(axis)) {
|
|
auto leadingPosition = YGComputedEdgeValue(
|
|
style_.position(), YGEdgeStart, CompactValue::ofUndefined());
|
|
if (!leadingPosition.isUndefined()) {
|
|
return YGResolveValue(leadingPosition, axisSize);
|
|
}
|
|
}
|
|
|
|
auto leadingPosition = YGComputedEdgeValue(
|
|
style_.position(), leading[axis], CompactValue::ofUndefined());
|
|
|
|
return leadingPosition.isUndefined()
|
|
? YGFloatOptional{0}
|
|
: YGResolveValue(leadingPosition, axisSize);
|
|
}
|
|
|
|
YGFloatOptional YGNode::getTrailingPosition(
|
|
const YGFlexDirection axis,
|
|
const float axisSize) const {
|
|
if (YGFlexDirectionIsRow(axis)) {
|
|
auto trailingPosition = YGComputedEdgeValue(
|
|
style_.position(), YGEdgeEnd, CompactValue::ofUndefined());
|
|
if (!trailingPosition.isUndefined()) {
|
|
return YGResolveValue(trailingPosition, axisSize);
|
|
}
|
|
}
|
|
|
|
auto trailingPosition = YGComputedEdgeValue(
|
|
style_.position(), trailing[axis], CompactValue::ofUndefined());
|
|
|
|
return trailingPosition.isUndefined()
|
|
? YGFloatOptional{0}
|
|
: YGResolveValue(trailingPosition, axisSize);
|
|
}
|
|
|
|
bool YGNode::isLeadingPositionDefined(const YGFlexDirection axis) const {
|
|
return (YGFlexDirectionIsRow(axis) &&
|
|
!YGComputedEdgeValue(
|
|
style_.position(), YGEdgeStart, CompactValue::ofUndefined())
|
|
.isUndefined()) ||
|
|
!YGComputedEdgeValue(
|
|
style_.position(), leading[axis], CompactValue::ofUndefined())
|
|
.isUndefined();
|
|
}
|
|
|
|
bool YGNode::isTrailingPosDefined(const YGFlexDirection axis) const {
|
|
return (YGFlexDirectionIsRow(axis) &&
|
|
!YGComputedEdgeValue(
|
|
style_.position(), YGEdgeEnd, CompactValue::ofUndefined())
|
|
.isUndefined()) ||
|
|
!YGComputedEdgeValue(
|
|
style_.position(), trailing[axis], CompactValue::ofUndefined())
|
|
.isUndefined();
|
|
}
|
|
|
|
YGFloatOptional YGNode::getLeadingMargin(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
if (YGFlexDirectionIsRow(axis) &&
|
|
!style_.margin()[YGEdgeStart].isUndefined()) {
|
|
return YGResolveValueMargin(style_.margin()[YGEdgeStart], widthSize);
|
|
}
|
|
|
|
return YGResolveValueMargin(
|
|
YGComputedEdgeValue(
|
|
style_.margin(), leading[axis], CompactValue::ofZero()),
|
|
widthSize);
|
|
}
|
|
|
|
YGFloatOptional YGNode::getTrailingMargin(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
if (YGFlexDirectionIsRow(axis) && !style_.margin()[YGEdgeEnd].isUndefined()) {
|
|
return YGResolveValueMargin(style_.margin()[YGEdgeEnd], widthSize);
|
|
}
|
|
|
|
return YGResolveValueMargin(
|
|
YGComputedEdgeValue(
|
|
style_.margin(), trailing[axis], CompactValue::ofZero()),
|
|
widthSize);
|
|
}
|
|
|
|
YGFloatOptional YGNode::getMarginForAxis(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
return getLeadingMargin(axis, widthSize) + getTrailingMargin(axis, widthSize);
|
|
}
|
|
|
|
YGSize YGNode::measure(
|
|
float width,
|
|
YGMeasureMode widthMode,
|
|
float height,
|
|
YGMeasureMode heightMode,
|
|
void* layoutContext) {
|
|
|
|
return flags_.at<measureUsesContext_>()
|
|
? measure_.withContext(
|
|
this, width, widthMode, height, heightMode, layoutContext)
|
|
: measure_.noContext(this, width, widthMode, height, heightMode);
|
|
}
|
|
|
|
float YGNode::baseline(float width, float height, void* layoutContext) {
|
|
return flags_.at<baselineUsesContext_>()
|
|
? baseline_.withContext(this, width, height, layoutContext)
|
|
: baseline_.noContext(this, width, height);
|
|
}
|
|
|
|
// Setters
|
|
|
|
void YGNode::setMeasureFunc(decltype(YGNode::measure_) measureFunc) {
|
|
if (measureFunc.noContext == nullptr) {
|
|
// TODO: t18095186 Move nodeType to opt-in function and mark appropriate
|
|
// places in Litho
|
|
flags_.at<nodeType_>() = YGNodeTypeDefault;
|
|
} else {
|
|
YGAssertWithNode(
|
|
this,
|
|
children_.size() == 0,
|
|
"Cannot set measure function: Nodes with measure functions cannot have "
|
|
"children.");
|
|
// TODO: t18095186 Move nodeType to opt-in function and mark appropriate
|
|
// places in Litho
|
|
setNodeType(YGNodeTypeText);
|
|
}
|
|
|
|
measure_ = measureFunc;
|
|
}
|
|
|
|
void YGNode::setMeasureFunc(YGMeasureFunc measureFunc) {
|
|
flags_.at<measureUsesContext_>() = false;
|
|
decltype(YGNode::measure_) m;
|
|
m.noContext = measureFunc;
|
|
setMeasureFunc(m);
|
|
}
|
|
|
|
YOGA_EXPORT void YGNode::setMeasureFunc(MeasureWithContextFn measureFunc) {
|
|
flags_.at<measureUsesContext_>() = true;
|
|
decltype(YGNode::measure_) m;
|
|
m.withContext = measureFunc;
|
|
setMeasureFunc(m);
|
|
}
|
|
|
|
void YGNode::replaceChild(YGNodeRef child, uint32_t index) {
|
|
children_[index] = child;
|
|
}
|
|
|
|
void YGNode::replaceChild(YGNodeRef oldChild, YGNodeRef newChild) {
|
|
std::replace(children_.begin(), children_.end(), oldChild, newChild);
|
|
}
|
|
|
|
void YGNode::insertChild(YGNodeRef child, uint32_t index) {
|
|
children_.insert(children_.begin() + index, child);
|
|
}
|
|
|
|
void YGNode::setDirty(bool isDirty) {
|
|
if (isDirty == flags_.at<isDirty_>()) {
|
|
return;
|
|
}
|
|
flags_.at<isDirty_>() = isDirty;
|
|
if (isDirty && dirtied_) {
|
|
dirtied_(this);
|
|
}
|
|
}
|
|
|
|
bool YGNode::removeChild(YGNodeRef child) {
|
|
std::vector<YGNodeRef>::iterator p =
|
|
std::find(children_.begin(), children_.end(), child);
|
|
if (p != children_.end()) {
|
|
children_.erase(p);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void YGNode::removeChild(uint32_t index) {
|
|
children_.erase(children_.begin() + index);
|
|
}
|
|
|
|
void YGNode::setLayoutDirection(YGDirection direction) {
|
|
layout_.direction() = direction;
|
|
}
|
|
|
|
void YGNode::setLayoutMargin(float margin, int index) {
|
|
layout_.margin[index] = margin;
|
|
}
|
|
|
|
void YGNode::setLayoutBorder(float border, int index) {
|
|
layout_.border[index] = border;
|
|
}
|
|
|
|
void YGNode::setLayoutPadding(float padding, int index) {
|
|
layout_.padding[index] = padding;
|
|
}
|
|
|
|
void YGNode::setLayoutLastOwnerDirection(YGDirection direction) {
|
|
layout_.lastOwnerDirection = direction;
|
|
}
|
|
|
|
void YGNode::setLayoutComputedFlexBasis(
|
|
const YGFloatOptional computedFlexBasis) {
|
|
layout_.computedFlexBasis = computedFlexBasis;
|
|
}
|
|
|
|
void YGNode::setLayoutPosition(float position, int index) {
|
|
layout_.position[index] = position;
|
|
}
|
|
|
|
void YGNode::setLayoutComputedFlexBasisGeneration(
|
|
uint32_t computedFlexBasisGeneration) {
|
|
layout_.computedFlexBasisGeneration = computedFlexBasisGeneration;
|
|
}
|
|
|
|
void YGNode::setLayoutMeasuredDimension(float measuredDimension, int index) {
|
|
layout_.measuredDimensions[index] = measuredDimension;
|
|
}
|
|
|
|
void YGNode::setLayoutHadOverflow(bool hadOverflow) {
|
|
layout_.hadOverflow() = hadOverflow;
|
|
}
|
|
|
|
void YGNode::setLayoutDimension(float dimension, int index) {
|
|
layout_.dimensions[index] = dimension;
|
|
}
|
|
|
|
// If both left and right are defined, then use left. Otherwise return +left or
|
|
// -right depending on which is defined.
|
|
YGFloatOptional YGNode::relativePosition(
|
|
const YGFlexDirection axis,
|
|
const float axisSize) const {
|
|
if (isLeadingPositionDefined(axis)) {
|
|
return getLeadingPosition(axis, axisSize);
|
|
}
|
|
|
|
YGFloatOptional trailingPosition = getTrailingPosition(axis, axisSize);
|
|
if (!trailingPosition.isUndefined()) {
|
|
trailingPosition = YGFloatOptional{-1 * trailingPosition.unwrap()};
|
|
}
|
|
return trailingPosition;
|
|
}
|
|
|
|
void YGNode::setPosition(
|
|
const YGDirection direction,
|
|
const float mainSize,
|
|
const float crossSize,
|
|
const float ownerWidth) {
|
|
/* Root nodes should be always layouted as LTR, so we don't return negative
|
|
* values. */
|
|
const YGDirection directionRespectingRoot =
|
|
owner_ != nullptr ? direction : YGDirectionLTR;
|
|
const YGFlexDirection mainAxis =
|
|
YGResolveFlexDirection(style_.flexDirection(), directionRespectingRoot);
|
|
const YGFlexDirection crossAxis =
|
|
YGFlexDirectionCross(mainAxis, directionRespectingRoot);
|
|
|
|
const YGFloatOptional relativePositionMain =
|
|
relativePosition(mainAxis, mainSize);
|
|
const YGFloatOptional relativePositionCross =
|
|
relativePosition(crossAxis, crossSize);
|
|
|
|
setLayoutPosition(
|
|
(getLeadingMargin(mainAxis, ownerWidth) + relativePositionMain).unwrap(),
|
|
leading[mainAxis]);
|
|
setLayoutPosition(
|
|
(getTrailingMargin(mainAxis, ownerWidth) + relativePositionMain).unwrap(),
|
|
trailing[mainAxis]);
|
|
setLayoutPosition(
|
|
(getLeadingMargin(crossAxis, ownerWidth) + relativePositionCross)
|
|
.unwrap(),
|
|
leading[crossAxis]);
|
|
setLayoutPosition(
|
|
(getTrailingMargin(crossAxis, ownerWidth) + relativePositionCross)
|
|
.unwrap(),
|
|
trailing[crossAxis]);
|
|
}
|
|
|
|
YGValue YGNode::marginLeadingValue(const YGFlexDirection axis) const {
|
|
if (YGFlexDirectionIsRow(axis) &&
|
|
!style_.margin()[YGEdgeStart].isUndefined()) {
|
|
return style_.margin()[YGEdgeStart];
|
|
} else {
|
|
return style_.margin()[leading[axis]];
|
|
}
|
|
}
|
|
|
|
YGValue YGNode::marginTrailingValue(const YGFlexDirection axis) const {
|
|
if (YGFlexDirectionIsRow(axis) && !style_.margin()[YGEdgeEnd].isUndefined()) {
|
|
return style_.margin()[YGEdgeEnd];
|
|
} else {
|
|
return style_.margin()[trailing[axis]];
|
|
}
|
|
}
|
|
|
|
YGValue YGNode::resolveFlexBasisPtr() const {
|
|
YGValue flexBasis = style_.flexBasis();
|
|
if (flexBasis.unit != YGUnitAuto && flexBasis.unit != YGUnitUndefined) {
|
|
return flexBasis;
|
|
}
|
|
if (!style_.flex().isUndefined() && style_.flex().unwrap() > 0.0f) {
|
|
return flags_.at<useWebDefaults_>() ? YGValueAuto : YGValueZero;
|
|
}
|
|
return YGValueAuto;
|
|
}
|
|
|
|
void YGNode::resolveDimension() {
|
|
using namespace yoga;
|
|
const YGStyle& style = getStyle();
|
|
for (auto dim : {YGDimensionWidth, YGDimensionHeight}) {
|
|
if (!style.maxDimensions()[dim].isUndefined() &&
|
|
YGValueEqual(style.maxDimensions()[dim], style.minDimensions()[dim])) {
|
|
resolvedDimensions_[dim] = style.maxDimensions()[dim];
|
|
} else {
|
|
resolvedDimensions_[dim] = style.dimensions()[dim];
|
|
}
|
|
}
|
|
}
|
|
|
|
YGDirection YGNode::resolveDirection(const YGDirection ownerDirection) {
|
|
if (style_.direction() == YGDirectionInherit) {
|
|
return ownerDirection > YGDirectionInherit ? ownerDirection
|
|
: YGDirectionLTR;
|
|
} else {
|
|
return style_.direction();
|
|
}
|
|
}
|
|
|
|
YOGA_EXPORT void YGNode::clearChildren() {
|
|
children_.clear();
|
|
children_.shrink_to_fit();
|
|
}
|
|
|
|
// Other Methods
|
|
|
|
void YGNode::cloneChildrenIfNeeded(void* cloneContext) {
|
|
iterChildrenAfterCloningIfNeeded([](YGNodeRef, void*) {}, cloneContext);
|
|
}
|
|
|
|
void YGNode::markDirtyAndPropogate() {
|
|
if (!flags_.at<isDirty_>()) {
|
|
setDirty(true);
|
|
setLayoutComputedFlexBasis(YGFloatOptional());
|
|
if (owner_) {
|
|
owner_->markDirtyAndPropogate();
|
|
}
|
|
}
|
|
}
|
|
|
|
void YGNode::markDirtyAndPropogateDownwards() {
|
|
flags_.at<isDirty_>() = true;
|
|
for_each(children_.begin(), children_.end(), [](YGNodeRef childNode) {
|
|
childNode->markDirtyAndPropogateDownwards();
|
|
});
|
|
}
|
|
|
|
float YGNode::resolveFlexGrow() const {
|
|
// Root nodes flexGrow should always be 0
|
|
if (owner_ == nullptr) {
|
|
return 0.0;
|
|
}
|
|
if (!style_.flexGrow().isUndefined()) {
|
|
return style_.flexGrow().unwrap();
|
|
}
|
|
if (!style_.flex().isUndefined() && style_.flex().unwrap() > 0.0f) {
|
|
return style_.flex().unwrap();
|
|
}
|
|
return kDefaultFlexGrow;
|
|
}
|
|
|
|
float YGNode::resolveFlexShrink() const {
|
|
if (owner_ == nullptr) {
|
|
return 0.0;
|
|
}
|
|
if (!style_.flexShrink().isUndefined()) {
|
|
return style_.flexShrink().unwrap();
|
|
}
|
|
if (!flags_.at<useWebDefaults_>() && !style_.flex().isUndefined() &&
|
|
style_.flex().unwrap() < 0.0f) {
|
|
return -style_.flex().unwrap();
|
|
}
|
|
return flags_.at<useWebDefaults_>() ? kWebDefaultFlexShrink
|
|
: kDefaultFlexShrink;
|
|
}
|
|
|
|
bool YGNode::isNodeFlexible() {
|
|
return (
|
|
(style_.positionType() == YGPositionTypeRelative) &&
|
|
(resolveFlexGrow() != 0 || resolveFlexShrink() != 0));
|
|
}
|
|
|
|
float YGNode::getLeadingBorder(const YGFlexDirection axis) const {
|
|
YGValue leadingBorder;
|
|
if (YGFlexDirectionIsRow(axis) &&
|
|
!style_.border()[YGEdgeStart].isUndefined()) {
|
|
leadingBorder = style_.border()[YGEdgeStart];
|
|
if (leadingBorder.value >= 0) {
|
|
return leadingBorder.value;
|
|
}
|
|
}
|
|
|
|
leadingBorder = YGComputedEdgeValue(
|
|
style_.border(), leading[axis], CompactValue::ofZero());
|
|
return YGFloatMax(leadingBorder.value, 0.0f);
|
|
}
|
|
|
|
float YGNode::getTrailingBorder(const YGFlexDirection flexDirection) const {
|
|
YGValue trailingBorder;
|
|
if (YGFlexDirectionIsRow(flexDirection) &&
|
|
!style_.border()[YGEdgeEnd].isUndefined()) {
|
|
trailingBorder = style_.border()[YGEdgeEnd];
|
|
if (trailingBorder.value >= 0.0f) {
|
|
return trailingBorder.value;
|
|
}
|
|
}
|
|
|
|
trailingBorder = YGComputedEdgeValue(
|
|
style_.border(), trailing[flexDirection], CompactValue::ofZero());
|
|
return YGFloatMax(trailingBorder.value, 0.0f);
|
|
}
|
|
|
|
YGFloatOptional YGNode::getLeadingPadding(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
const YGFloatOptional paddingEdgeStart =
|
|
YGResolveValue(style_.padding()[YGEdgeStart], widthSize);
|
|
if (YGFlexDirectionIsRow(axis) &&
|
|
!style_.padding()[YGEdgeStart].isUndefined() &&
|
|
!paddingEdgeStart.isUndefined() && paddingEdgeStart.unwrap() >= 0.0f) {
|
|
return paddingEdgeStart;
|
|
}
|
|
|
|
YGFloatOptional resolvedValue = YGResolveValue(
|
|
YGComputedEdgeValue(
|
|
style_.padding(), leading[axis], CompactValue::ofZero()),
|
|
widthSize);
|
|
return YGFloatOptionalMax(resolvedValue, YGFloatOptional(0.0f));
|
|
}
|
|
|
|
YGFloatOptional YGNode::getTrailingPadding(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
const YGFloatOptional paddingEdgeEnd =
|
|
YGResolveValue(style_.padding()[YGEdgeEnd], widthSize);
|
|
if (YGFlexDirectionIsRow(axis) && paddingEdgeEnd >= YGFloatOptional{0.0f}) {
|
|
return paddingEdgeEnd;
|
|
}
|
|
|
|
YGFloatOptional resolvedValue = YGResolveValue(
|
|
YGComputedEdgeValue(
|
|
style_.padding(), trailing[axis], CompactValue::ofZero()),
|
|
widthSize);
|
|
|
|
return YGFloatOptionalMax(resolvedValue, YGFloatOptional(0.0f));
|
|
}
|
|
|
|
YGFloatOptional YGNode::getLeadingPaddingAndBorder(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
return getLeadingPadding(axis, widthSize) +
|
|
YGFloatOptional(getLeadingBorder(axis));
|
|
}
|
|
|
|
YGFloatOptional YGNode::getTrailingPaddingAndBorder(
|
|
const YGFlexDirection axis,
|
|
const float widthSize) const {
|
|
return getTrailingPadding(axis, widthSize) +
|
|
YGFloatOptional(getTrailingBorder(axis));
|
|
}
|
|
|
|
bool YGNode::didUseLegacyFlag() {
|
|
bool didUseLegacyFlag = layout_.didUseLegacyFlag();
|
|
if (didUseLegacyFlag) {
|
|
return true;
|
|
}
|
|
for (const auto& child : children_) {
|
|
if (child->layout_.didUseLegacyFlag()) {
|
|
didUseLegacyFlag = true;
|
|
break;
|
|
}
|
|
}
|
|
return didUseLegacyFlag;
|
|
}
|
|
|
|
void YGNode::setLayoutDoesLegacyFlagAffectsLayout(
|
|
bool doesLegacyFlagAffectsLayout) {
|
|
layout_.doesLegacyStretchFlagAffectsLayout() = doesLegacyFlagAffectsLayout;
|
|
}
|
|
|
|
void YGNode::setLayoutDidUseLegacyFlag(bool didUseLegacyFlag) {
|
|
layout_.didUseLegacyFlag() = didUseLegacyFlag;
|
|
}
|
|
|
|
bool YGNode::isLayoutTreeEqualToNode(const YGNode& node) const {
|
|
if (children_.size() != node.children_.size()) {
|
|
return false;
|
|
}
|
|
if (layout_ != node.layout_) {
|
|
return false;
|
|
}
|
|
if (children_.size() == 0) {
|
|
return true;
|
|
}
|
|
|
|
bool isLayoutTreeEqual = true;
|
|
YGNodeRef otherNodeChildren = nullptr;
|
|
for (std::vector<YGNodeRef>::size_type i = 0; i < children_.size(); ++i) {
|
|
otherNodeChildren = node.children_[i];
|
|
isLayoutTreeEqual =
|
|
children_[i]->isLayoutTreeEqualToNode(*otherNodeChildren);
|
|
if (!isLayoutTreeEqual) {
|
|
return false;
|
|
}
|
|
}
|
|
return isLayoutTreeEqual;
|
|
}
|
|
|
|
void YGNode::reset() {
|
|
YGAssertWithNode(
|
|
this,
|
|
children_.size() == 0,
|
|
"Cannot reset a node which still has children attached");
|
|
YGAssertWithNode(
|
|
this, owner_ == nullptr, "Cannot reset a node still attached to a owner");
|
|
|
|
clearChildren();
|
|
|
|
auto webDefaults = flags_.at<useWebDefaults_>();
|
|
*this = YGNode{getConfig()};
|
|
if (webDefaults) {
|
|
useWebDefaults();
|
|
}
|
|
}
|