split project with app & doric module
This commit is contained in:
王劲鹏
osborn
593
doric-Qt/example/doric/yoga/YGNode.cpp
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593
doric-Qt/example/doric/yoga/YGNode.cpp
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@@ -0,0 +1,593 @@
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/*
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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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#include "YGNode.h"
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#include <algorithm>
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#include <iostream>
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#include "CompactValue.h"
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#include "Utils.h"
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using namespace facebook;
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using facebook::yoga::detail::CompactValue;
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YGNode::YGNode(YGNode&& node) {
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context_ = node.context_;
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flags = node.flags;
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measure_ = node.measure_;
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baseline_ = node.baseline_;
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print_ = node.print_;
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dirtied_ = node.dirtied_;
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style_ = node.style_;
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layout_ = node.layout_;
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lineIndex_ = node.lineIndex_;
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owner_ = node.owner_;
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children_ = std::move(node.children_);
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config_ = node.config_;
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resolvedDimensions_ = node.resolvedDimensions_;
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for (auto c : children_) {
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c->setOwner(this);
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}
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}
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YGNode::YGNode(const YGNode& node, YGConfigRef config) : YGNode{node} {
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config_ = config;
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if (config->useWebDefaults) {
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useWebDefaults();
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}
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}
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void YGNode::print(void* printContext) {
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if (print_.noContext != nullptr) {
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if (facebook::yoga::detail::getBooleanData(flags, printUsesContext_)) {
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print_.withContext(this, printContext);
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} else {
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print_.noContext(this);
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}
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}
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}
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CompactValue YGNode::computeEdgeValueForRow(
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const YGStyle::Edges& edges,
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YGEdge rowEdge,
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YGEdge edge,
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CompactValue defaultValue) {
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if (!edges[rowEdge].isUndefined()) {
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return edges[rowEdge];
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} else if (!edges[edge].isUndefined()) {
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return edges[edge];
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} else if (!edges[YGEdgeHorizontal].isUndefined()) {
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return edges[YGEdgeHorizontal];
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} else if (!edges[YGEdgeAll].isUndefined()) {
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return edges[YGEdgeAll];
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} else {
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return defaultValue;
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}
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}
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CompactValue YGNode::computeEdgeValueForColumn(
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const YGStyle::Edges& edges,
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YGEdge edge,
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CompactValue defaultValue) {
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if (!edges[edge].isUndefined()) {
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return edges[edge];
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} else if (!edges[YGEdgeVertical].isUndefined()) {
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return edges[YGEdgeVertical];
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} else if (!edges[YGEdgeAll].isUndefined()) {
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return edges[YGEdgeAll];
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} else {
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return defaultValue;
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}
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}
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YGFloatOptional YGNode::getLeadingPosition(
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const YGFlexDirection axis,
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const float axisSize) const {
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auto leadingPosition = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.position(),
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YGEdgeStart,
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leading[axis],
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CompactValue::ofZero())
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: computeEdgeValueForColumn(
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style_.position(), leading[axis], CompactValue::ofZero());
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return YGResolveValue(leadingPosition, axisSize);
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}
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YGFloatOptional YGNode::getTrailingPosition(
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const YGFlexDirection axis,
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const float axisSize) const {
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auto trailingPosition = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.position(),
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YGEdgeEnd,
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trailing[axis],
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CompactValue::ofZero())
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: computeEdgeValueForColumn(
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style_.position(), trailing[axis], CompactValue::ofZero());
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return YGResolveValue(trailingPosition, axisSize);
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}
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bool YGNode::isLeadingPositionDefined(const YGFlexDirection axis) const {
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auto leadingPosition = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.position(),
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YGEdgeStart,
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leading[axis],
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CompactValue::ofUndefined())
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: computeEdgeValueForColumn(
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style_.position(), leading[axis], CompactValue::ofUndefined());
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return !leadingPosition.isUndefined();
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}
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bool YGNode::isTrailingPosDefined(const YGFlexDirection axis) const {
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auto trailingPosition = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.position(),
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YGEdgeEnd,
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trailing[axis],
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CompactValue::ofUndefined())
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: computeEdgeValueForColumn(
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style_.position(), trailing[axis], CompactValue::ofUndefined());
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return !trailingPosition.isUndefined();
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}
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YGFloatOptional YGNode::getLeadingMargin(
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const YGFlexDirection axis,
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const float widthSize) const {
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auto leadingMargin = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.margin(), YGEdgeStart, leading[axis], CompactValue::ofZero())
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: computeEdgeValueForColumn(
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style_.margin(), leading[axis], CompactValue::ofZero());
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return YGResolveValueMargin(leadingMargin, widthSize);
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}
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YGFloatOptional YGNode::getTrailingMargin(
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const YGFlexDirection axis,
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const float widthSize) const {
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auto trailingMargin = YGFlexDirectionIsRow(axis)
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? computeEdgeValueForRow(
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style_.margin(), YGEdgeEnd, trailing[axis], CompactValue::ofZero())
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: computeEdgeValueForColumn(
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style_.margin(), trailing[axis], CompactValue::ofZero());
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return YGResolveValueMargin(trailingMargin, widthSize);
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}
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YGFloatOptional YGNode::getMarginForAxis(
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const YGFlexDirection axis,
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const float widthSize) const {
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return getLeadingMargin(axis, widthSize) + getTrailingMargin(axis, widthSize);
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}
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YGSize YGNode::measure(
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float width,
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YGMeasureMode widthMode,
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float height,
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YGMeasureMode heightMode,
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void* layoutContext) {
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return facebook::yoga::detail::getBooleanData(flags, measureUsesContext_)
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? measure_.withContext(
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this, width, widthMode, height, heightMode, layoutContext)
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: measure_.noContext(this, width, widthMode, height, heightMode);
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}
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float YGNode::baseline(float width, float height, void* layoutContext) {
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return facebook::yoga::detail::getBooleanData(flags, baselineUsesContext_)
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? baseline_.withContext(this, width, height, layoutContext)
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: baseline_.noContext(this, width, height);
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}
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// Setters
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void YGNode::setMeasureFunc(decltype(YGNode::measure_) measureFunc) {
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if (measureFunc.noContext == nullptr) {
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// TODO: t18095186 Move nodeType to opt-in function and mark appropriate
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// places in Litho
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setNodeType(YGNodeTypeDefault);
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} else {
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YGAssertWithNode(
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this,
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children_.size() == 0,
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"Cannot set measure function: Nodes with measure functions cannot have "
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"children.");
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// TODO: t18095186 Move nodeType to opt-in function and mark appropriate
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// places in Litho
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setNodeType(YGNodeTypeText);
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}
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measure_ = measureFunc;
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}
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void YGNode::setMeasureFunc(YGMeasureFunc measureFunc) {
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facebook::yoga::detail::setBooleanData(flags, measureUsesContext_, false);
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decltype(YGNode::measure_) m;
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m.noContext = measureFunc;
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setMeasureFunc(m);
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}
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YOGA_EXPORT void YGNode::setMeasureFunc(MeasureWithContextFn measureFunc) {
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facebook::yoga::detail::setBooleanData(flags, measureUsesContext_, true);
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decltype(YGNode::measure_) m;
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m.withContext = measureFunc;
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setMeasureFunc(m);
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}
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void YGNode::replaceChild(YGNodeRef child, uint32_t index) {
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children_[index] = child;
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}
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void YGNode::replaceChild(YGNodeRef oldChild, YGNodeRef newChild) {
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std::replace(children_.begin(), children_.end(), oldChild, newChild);
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}
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void YGNode::insertChild(YGNodeRef child, uint32_t index) {
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children_.insert(children_.begin() + index, child);
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}
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void YGNode::setDirty(bool isDirty) {
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if (isDirty == facebook::yoga::detail::getBooleanData(flags, isDirty_)) {
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return;
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}
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facebook::yoga::detail::setBooleanData(flags, isDirty_, isDirty);
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if (isDirty && dirtied_) {
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dirtied_(this);
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}
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}
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bool YGNode::removeChild(YGNodeRef child) {
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std::vector<YGNodeRef>::iterator p =
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std::find(children_.begin(), children_.end(), child);
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if (p != children_.end()) {
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children_.erase(p);
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return true;
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}
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return false;
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}
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void YGNode::removeChild(uint32_t index) {
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children_.erase(children_.begin() + index);
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}
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void YGNode::setLayoutDirection(YGDirection direction) {
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layout_.setDirection(direction);
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}
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void YGNode::setLayoutMargin(float margin, int index) {
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layout_.margin[index] = margin;
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}
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void YGNode::setLayoutBorder(float border, int index) {
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layout_.border[index] = border;
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}
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void YGNode::setLayoutPadding(float padding, int index) {
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layout_.padding[index] = padding;
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}
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void YGNode::setLayoutLastOwnerDirection(YGDirection direction) {
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layout_.lastOwnerDirection = direction;
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}
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void YGNode::setLayoutComputedFlexBasis(
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const YGFloatOptional computedFlexBasis) {
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layout_.computedFlexBasis = computedFlexBasis;
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}
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void YGNode::setLayoutPosition(float position, int index) {
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layout_.position[index] = position;
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}
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void YGNode::setLayoutComputedFlexBasisGeneration(
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uint32_t computedFlexBasisGeneration) {
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layout_.computedFlexBasisGeneration = computedFlexBasisGeneration;
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}
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void YGNode::setLayoutMeasuredDimension(float measuredDimension, int index) {
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layout_.measuredDimensions[index] = measuredDimension;
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}
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void YGNode::setLayoutHadOverflow(bool hadOverflow) {
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layout_.setHadOverflow(hadOverflow);
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}
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void YGNode::setLayoutDimension(float dimension, int index) {
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layout_.dimensions[index] = dimension;
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}
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// If both left and right are defined, then use left. Otherwise return +left or
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// -right depending on which is defined.
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YGFloatOptional YGNode::relativePosition(
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const YGFlexDirection axis,
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const float axisSize) const {
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if (isLeadingPositionDefined(axis)) {
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return getLeadingPosition(axis, axisSize);
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}
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YGFloatOptional trailingPosition = getTrailingPosition(axis, axisSize);
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if (!trailingPosition.isUndefined()) {
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trailingPosition = YGFloatOptional{-1 * trailingPosition.unwrap()};
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}
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return trailingPosition;
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}
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void YGNode::setPosition(
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const YGDirection direction,
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const float mainSize,
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const float crossSize,
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const float ownerWidth) {
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/* Root nodes should be always layouted as LTR, so we don't return negative
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* values. */
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const YGDirection directionRespectingRoot =
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owner_ != nullptr ? direction : YGDirectionLTR;
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const YGFlexDirection mainAxis =
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YGResolveFlexDirection(style_.flexDirection(), directionRespectingRoot);
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const YGFlexDirection crossAxis =
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YGFlexDirectionCross(mainAxis, directionRespectingRoot);
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// Here we should check for `YGPositionTypeStatic` and in this case zero inset
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// properties (left, right, top, bottom, begin, end).
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// https://www.w3.org/TR/css-position-3/#valdef-position-static
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const YGFloatOptional relativePositionMain =
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relativePosition(mainAxis, mainSize);
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const YGFloatOptional relativePositionCross =
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relativePosition(crossAxis, crossSize);
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setLayoutPosition(
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(getLeadingMargin(mainAxis, ownerWidth) + relativePositionMain).unwrap(),
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leading[mainAxis]);
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setLayoutPosition(
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(getTrailingMargin(mainAxis, ownerWidth) + relativePositionMain).unwrap(),
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trailing[mainAxis]);
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setLayoutPosition(
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(getLeadingMargin(crossAxis, ownerWidth) + relativePositionCross)
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.unwrap(),
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leading[crossAxis]);
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setLayoutPosition(
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(getTrailingMargin(crossAxis, ownerWidth) + relativePositionCross)
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.unwrap(),
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trailing[crossAxis]);
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}
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YGValue YGNode::marginLeadingValue(const YGFlexDirection axis) const {
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if (YGFlexDirectionIsRow(axis) &&
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!style_.margin()[YGEdgeStart].isUndefined()) {
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return style_.margin()[YGEdgeStart];
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} else {
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return style_.margin()[leading[axis]];
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}
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}
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YGValue YGNode::marginTrailingValue(const YGFlexDirection axis) const {
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if (YGFlexDirectionIsRow(axis) && !style_.margin()[YGEdgeEnd].isUndefined()) {
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return style_.margin()[YGEdgeEnd];
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} else {
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return style_.margin()[trailing[axis]];
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}
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}
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YGValue YGNode::resolveFlexBasisPtr() const {
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YGValue flexBasis = style_.flexBasis();
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if (flexBasis.unit != YGUnitAuto && flexBasis.unit != YGUnitUndefined) {
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return flexBasis;
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}
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if (!style_.flex().isUndefined() && style_.flex().unwrap() > 0.0f) {
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return facebook::yoga::detail::getBooleanData(flags, useWebDefaults_)
|
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? YGValueAuto
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: YGValueZero;
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||||
}
|
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return YGValueAuto;
|
||||
}
|
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void YGNode::resolveDimension() {
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using namespace yoga;
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const YGStyle& style = getStyle();
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for (auto dim : {YGDimensionWidth, YGDimensionHeight}) {
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if (!style.maxDimensions()[dim].isUndefined() &&
|
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YGValueEqual(style.maxDimensions()[dim], style.minDimensions()[dim])) {
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resolvedDimensions_[dim] = style.maxDimensions()[dim];
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} else {
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resolvedDimensions_[dim] = style.dimensions()[dim];
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||||
}
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}
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||||
}
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||||
YGDirection YGNode::resolveDirection(const YGDirection ownerDirection) {
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if (style_.direction() == YGDirectionInherit) {
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return ownerDirection > YGDirectionInherit ? ownerDirection
|
||||
: YGDirectionLTR;
|
||||
} else {
|
||||
return style_.direction();
|
||||
}
|
||||
}
|
||||
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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 (!facebook::yoga::detail::getBooleanData(flags, isDirty_)) {
|
||||
setDirty(true);
|
||||
setLayoutComputedFlexBasis(YGFloatOptional());
|
||||
if (owner_) {
|
||||
owner_->markDirtyAndPropogate();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void YGNode::markDirtyAndPropogateDownwards() {
|
||||
facebook::yoga::detail::setBooleanData(flags, 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 (!facebook::yoga::detail::getBooleanData(flags, useWebDefaults_) &&
|
||||
!style_.flex().isUndefined() && style_.flex().unwrap() < 0.0f) {
|
||||
return -style_.flex().unwrap();
|
||||
}
|
||||
return facebook::yoga::detail::getBooleanData(flags, useWebDefaults_)
|
||||
? kWebDefaultFlexShrink
|
||||
: kDefaultFlexShrink;
|
||||
}
|
||||
|
||||
bool YGNode::isNodeFlexible() {
|
||||
return (
|
||||
(style_.positionType() != YGPositionTypeAbsolute) &&
|
||||
(resolveFlexGrow() != 0 || resolveFlexShrink() != 0));
|
||||
}
|
||||
|
||||
float YGNode::getLeadingBorder(const YGFlexDirection axis) const {
|
||||
YGValue leadingBorder = YGFlexDirectionIsRow(axis)
|
||||
? computeEdgeValueForRow(
|
||||
style_.border(), YGEdgeStart, leading[axis], CompactValue::ofZero())
|
||||
: computeEdgeValueForColumn(
|
||||
style_.border(), leading[axis], CompactValue::ofZero());
|
||||
return fmaxf(leadingBorder.value, 0.0f);
|
||||
}
|
||||
|
||||
float YGNode::getTrailingBorder(const YGFlexDirection axis) const {
|
||||
YGValue trailingBorder = YGFlexDirectionIsRow(axis)
|
||||
? computeEdgeValueForRow(
|
||||
style_.border(), YGEdgeEnd, trailing[axis], CompactValue::ofZero())
|
||||
: computeEdgeValueForColumn(
|
||||
style_.border(), trailing[axis], CompactValue::ofZero());
|
||||
return fmaxf(trailingBorder.value, 0.0f);
|
||||
}
|
||||
|
||||
YGFloatOptional YGNode::getLeadingPadding(
|
||||
const YGFlexDirection axis,
|
||||
const float widthSize) const {
|
||||
auto leadingPadding = YGFlexDirectionIsRow(axis)
|
||||
? computeEdgeValueForRow(
|
||||
style_.padding(),
|
||||
YGEdgeStart,
|
||||
leading[axis],
|
||||
CompactValue::ofZero())
|
||||
: computeEdgeValueForColumn(
|
||||
style_.padding(), leading[axis], CompactValue::ofZero());
|
||||
return YGFloatOptionalMax(
|
||||
YGResolveValue(leadingPadding, widthSize), YGFloatOptional(0.0f));
|
||||
}
|
||||
|
||||
YGFloatOptional YGNode::getTrailingPadding(
|
||||
const YGFlexDirection axis,
|
||||
const float widthSize) const {
|
||||
auto trailingPadding = YGFlexDirectionIsRow(axis)
|
||||
? computeEdgeValueForRow(
|
||||
style_.padding(), YGEdgeEnd, trailing[axis], CompactValue::ofZero())
|
||||
: computeEdgeValueForColumn(
|
||||
style_.padding(), trailing[axis], CompactValue::ofZero());
|
||||
return YGFloatOptionalMax(
|
||||
YGResolveValue(trailingPadding, widthSize), 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_.setDoesLegacyStretchFlagAffectsLayout(doesLegacyFlagAffectsLayout);
|
||||
}
|
||||
|
||||
void YGNode::setLayoutDidUseLegacyFlag(bool didUseLegacyFlag) {
|
||||
layout_.setDidUseLegacyFlag(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 =
|
||||
facebook::yoga::detail::getBooleanData(flags, useWebDefaults_);
|
||||
*this = YGNode{getConfig()};
|
||||
if (webDefaults) {
|
||||
useWebDefaults();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user