Refactor and move YGNodeToString implementation to different file
Summary: Refactored the `YGNodeToString` function from c to c++. Reviewed By: emilsjolander Differential Revision: D6397372 fbshipit-source-id: 79e701efe7f19db6dac1aea6328ebf0ac84a7ac3
This commit is contained in:
Pritesh Nandgaonkar
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Facebook Github Bot
Facebook Github Bot
parent
02c00f2711
commit
34ac314101
@@ -8,6 +8,8 @@
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*/
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#pragma once
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#include "YGNodeList.h"
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#include "Yoga.h"
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YG_EXTERN_C_BEGIN
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@@ -17,3 +19,209 @@ WIN_EXPORT float YGRoundValueToPixelGrid(const float value,
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const bool forceFloor);
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YG_EXTERN_C_END
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typedef struct YGCachedMeasurement {
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float availableWidth;
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float availableHeight;
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YGMeasureMode widthMeasureMode;
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YGMeasureMode heightMeasureMode;
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float computedWidth;
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float computedHeight;
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} YGCachedMeasurement;
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// This value was chosen based on empiracle data. Even the most complicated
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// layouts should not require more than 16 entries to fit within the cache.
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#define YG_MAX_CACHED_RESULT_COUNT 16
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typedef struct YGLayout {
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float position[4];
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float dimensions[2];
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float margin[6];
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float border[6];
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float padding[6];
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YGDirection direction;
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uint32_t computedFlexBasisGeneration;
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float computedFlexBasis;
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bool hadOverflow;
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// Instead of recomputing the entire layout every single time, we
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// cache some information to break early when nothing changed
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uint32_t generationCount;
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YGDirection lastParentDirection;
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uint32_t nextCachedMeasurementsIndex;
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YGCachedMeasurement cachedMeasurements[YG_MAX_CACHED_RESULT_COUNT];
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float measuredDimensions[2];
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YGCachedMeasurement cachedLayout;
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} YGLayout;
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typedef struct YGStyle {
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YGDirection direction;
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YGFlexDirection flexDirection;
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YGJustify justifyContent;
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YGAlign alignContent;
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YGAlign alignItems;
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YGAlign alignSelf;
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YGPositionType positionType;
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YGWrap flexWrap;
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YGOverflow overflow;
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YGDisplay display;
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float flex;
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float flexGrow;
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float flexShrink;
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YGValue flexBasis;
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YGValue margin[YGEdgeCount];
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YGValue position[YGEdgeCount];
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YGValue padding[YGEdgeCount];
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YGValue border[YGEdgeCount];
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YGValue dimensions[2];
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YGValue minDimensions[2];
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YGValue maxDimensions[2];
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// Yoga specific properties, not compatible with flexbox specification
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float aspectRatio;
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} YGStyle;
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typedef struct YGConfig {
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bool experimentalFeatures[YGExperimentalFeatureCount + 1];
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bool useWebDefaults;
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bool useLegacyStretchBehaviour;
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float pointScaleFactor;
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YGLogger logger;
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YGNodeClonedFunc cloneNodeCallback;
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void* context;
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} YGConfig;
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typedef struct YGNode {
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YGStyle style;
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YGLayout layout;
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uint32_t lineIndex;
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YGNodeRef parent;
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YGNodeListRef children;
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struct YGNode* nextChild;
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YGMeasureFunc measure;
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YGBaselineFunc baseline;
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YGPrintFunc print;
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YGConfigRef config;
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void* context;
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bool isDirty;
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bool hasNewLayout;
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YGNodeType nodeType;
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YGValue const* resolvedDimensions[2];
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} YGNode;
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#define YG_UNDEFINED_VALUES \
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{ .value = YGUndefined, .unit = YGUnitUndefined }
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#define YG_AUTO_VALUES \
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{ .value = YGUndefined, .unit = YGUnitAuto }
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#define YG_DEFAULT_EDGE_VALUES_UNIT \
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{ \
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[YGEdgeLeft] = YG_UNDEFINED_VALUES, [YGEdgeTop] = YG_UNDEFINED_VALUES, \
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[YGEdgeRight] = YG_UNDEFINED_VALUES, [YGEdgeBottom] = YG_UNDEFINED_VALUES, \
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[YGEdgeStart] = YG_UNDEFINED_VALUES, [YGEdgeEnd] = YG_UNDEFINED_VALUES, \
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[YGEdgeHorizontal] = YG_UNDEFINED_VALUES, \
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[YGEdgeVertical] = YG_UNDEFINED_VALUES, [YGEdgeAll] = YG_UNDEFINED_VALUES, \
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}
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#define YG_DEFAULT_DIMENSION_VALUES \
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{ [YGDimensionWidth] = YGUndefined, [YGDimensionHeight] = YGUndefined, }
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#define YG_DEFAULT_DIMENSION_VALUES_UNIT \
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{ \
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[YGDimensionWidth] = YG_UNDEFINED_VALUES, \
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[YGDimensionHeight] = YG_UNDEFINED_VALUES, \
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}
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#define YG_DEFAULT_DIMENSION_VALUES_AUTO_UNIT \
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{ [YGDimensionWidth] = YG_AUTO_VALUES, [YGDimensionHeight] = YG_AUTO_VALUES, }
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static const float kDefaultFlexGrow = 0.0f;
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static const float kDefaultFlexShrink = 0.0f;
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static const float kWebDefaultFlexShrink = 1.0f;
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static const YGStyle gYGNodeStyleDefaults = {
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.direction = YGDirectionInherit,
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.flexDirection = YGFlexDirectionColumn,
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.justifyContent = YGJustifyFlexStart,
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.alignContent = YGAlignFlexStart,
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.alignItems = YGAlignStretch,
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.alignSelf = YGAlignAuto,
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.positionType = YGPositionTypeRelative,
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.flexWrap = YGWrapNoWrap,
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.overflow = YGOverflowVisible,
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.display = YGDisplayFlex,
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.flex = YGUndefined,
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.flexGrow = YGUndefined,
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.flexShrink = YGUndefined,
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.flexBasis = YG_AUTO_VALUES,
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.margin = YG_DEFAULT_EDGE_VALUES_UNIT,
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.position = YG_DEFAULT_EDGE_VALUES_UNIT,
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.padding = YG_DEFAULT_EDGE_VALUES_UNIT,
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.border = YG_DEFAULT_EDGE_VALUES_UNIT,
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.dimensions = YG_DEFAULT_DIMENSION_VALUES_AUTO_UNIT,
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.minDimensions = YG_DEFAULT_DIMENSION_VALUES_UNIT,
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.maxDimensions = YG_DEFAULT_DIMENSION_VALUES_UNIT,
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.aspectRatio = YGUndefined,
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};
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static const YGLayout gYGNodeLayoutDefaults = {
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.position = {},
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.dimensions = YG_DEFAULT_DIMENSION_VALUES,
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.margin = {},
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.border = {},
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.padding = {},
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.direction = YGDirectionInherit,
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.computedFlexBasisGeneration = 0,
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.computedFlexBasis = YGUndefined,
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.hadOverflow = false,
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.generationCount = 0,
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.lastParentDirection = (YGDirection)-1,
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.nextCachedMeasurementsIndex = 0,
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.cachedMeasurements = {},
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.measuredDimensions = YG_DEFAULT_DIMENSION_VALUES,
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.cachedLayout =
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{
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.availableWidth = 0,
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.availableHeight = 0,
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.widthMeasureMode = (YGMeasureMode)-1,
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.heightMeasureMode = (YGMeasureMode)-1,
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.computedWidth = -1,
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.computedHeight = -1,
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},
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};
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static const YGNode gYGNodeDefaults = {
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.style = gYGNodeStyleDefaults,
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.layout = gYGNodeLayoutDefaults,
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.lineIndex = 0,
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.parent = nullptr,
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.children = nullptr,
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.nextChild = nullptr,
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.measure = nullptr,
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.baseline = nullptr,
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.print = nullptr,
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.config = nullptr,
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.context = nullptr,
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.isDirty = false,
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.hasNewLayout = true,
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.nodeType = YGNodeTypeDefault,
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.resolvedDimensions = {[YGDimensionWidth] = &YGValueUndefined,
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[YGDimensionHeight] = &YGValueUndefined},
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};
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extern bool YGFloatsEqual(const float a, const float b);
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extern bool YGValueEqual(const YGValue a, const YGValue b);
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extern const YGValue* YGComputedEdgeValue(
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const YGValue edges[YGEdgeCount],
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const YGEdge edge,
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const YGValue* const defaultValue);
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