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react-native/React/Views/RCTShadowView.m

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTShadowView.h"
#import "RCTConvert.h"
#import "RCTLog.h"
#import "RCTUtils.h"
#import "UIView+Private.h"
#import "UIView+React.h"
typedef void (^RCTActionBlock)(RCTShadowView *shadowViewSelf, id value);
typedef void (^RCTResetActionBlock)(RCTShadowView *shadowViewSelf);
static NSString *const RCTBackgroundColorProp = @"backgroundColor";
typedef NS_ENUM(unsigned int, meta_prop_t) {
META_PROP_LEFT,
META_PROP_TOP,
META_PROP_RIGHT,
META_PROP_BOTTOM,
META_PROP_HORIZONTAL,
META_PROP_VERTICAL,
META_PROP_ALL,
META_PROP_COUNT,
};
@implementation RCTShadowView
{
RCTUpdateLifecycle _propagationLifecycle;
RCTUpdateLifecycle _textLifecycle;
NSDictionary *_lastParentProperties;
NSMutableArray<RCTShadowView *> *_reactSubviews;
BOOL _recomputePadding;
BOOL _recomputeMargin;
BOOL _recomputeBorder;
BOOL _didUpdateSubviews;
float _paddingMetaProps[META_PROP_COUNT];
float _marginMetaProps[META_PROP_COUNT];
float _borderMetaProps[META_PROP_COUNT];
}
@synthesize reactTag = _reactTag;
// cssNode api
static void RCTPrint(YGNodeRef node)
{
RCTShadowView *shadowView = (__bridge RCTShadowView *)YGNodeGetContext(node);
printf("%s(%zd), ", shadowView.viewName.UTF8String, shadowView.reactTag.integerValue);
}
// Enforces precedence rules, e.g. marginLeft > marginHorizontal > margin.
#define DEFINE_PROCESS_META_PROPS(type) \
static void RCTProcessMetaProps##type(const float metaProps[META_PROP_COUNT], YGNodeRef node) { \
if (!YGValueIsUndefined(metaProps[META_PROP_LEFT])) { \
YGNodeStyleSet##type(node, YGEdgeStart, metaProps[META_PROP_LEFT]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_HORIZONTAL])) { \
YGNodeStyleSet##type(node, YGEdgeStart, metaProps[META_PROP_HORIZONTAL]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_ALL])) { \
YGNodeStyleSet##type(node, YGEdgeStart, metaProps[META_PROP_ALL]); \
} else { \
YGNodeStyleSet##type(node, YGEdgeStart, 0); \
} \
\
if (!YGValueIsUndefined(metaProps[META_PROP_RIGHT])) { \
YGNodeStyleSet##type(node, YGEdgeEnd, metaProps[META_PROP_RIGHT]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_HORIZONTAL])) { \
YGNodeStyleSet##type(node, YGEdgeEnd, metaProps[META_PROP_HORIZONTAL]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_ALL])) { \
YGNodeStyleSet##type(node, YGEdgeEnd, metaProps[META_PROP_ALL]); \
} else { \
YGNodeStyleSet##type(node, YGEdgeEnd, 0); \
} \
\
if (!YGValueIsUndefined(metaProps[META_PROP_TOP])) { \
YGNodeStyleSet##type(node, YGEdgeTop, metaProps[META_PROP_TOP]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_VERTICAL])) { \
YGNodeStyleSet##type(node, YGEdgeTop, metaProps[META_PROP_VERTICAL]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_ALL])) { \
YGNodeStyleSet##type(node, YGEdgeTop, metaProps[META_PROP_ALL]); \
} else { \
YGNodeStyleSet##type(node, YGEdgeTop, 0); \
} \
\
if (!YGValueIsUndefined(metaProps[META_PROP_BOTTOM])) { \
YGNodeStyleSet##type(node, YGEdgeBottom, metaProps[META_PROP_BOTTOM]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_VERTICAL])) { \
YGNodeStyleSet##type(node, YGEdgeBottom, metaProps[META_PROP_VERTICAL]); \
} else if (!YGValueIsUndefined(metaProps[META_PROP_ALL])) { \
YGNodeStyleSet##type(node, YGEdgeBottom, metaProps[META_PROP_ALL]); \
} else { \
YGNodeStyleSet##type(node, YGEdgeBottom, 0); \
} \
}
DEFINE_PROCESS_META_PROPS(Padding);
DEFINE_PROCESS_META_PROPS(Margin);
DEFINE_PROCESS_META_PROPS(Border);
// The absolute stuff is so that we can take into account our absolute position when rounding in order to
// snap to the pixel grid. For example, say you have the following structure:
//
// +--------+---------+--------+
// | |+-------+| |
// | || || |
// | |+-------+| |
// +--------+---------+--------+
//
// Say the screen width is 320 pts so the three big views will get the following x bounds from our layout system:
// {0, 106.667}, {106.667, 213.333}, {213.333, 320}
//
// Assuming screen scale is 2, these numbers must be rounded to the nearest 0.5 to fit the pixel grid:
// {0, 106.5}, {106.5, 213.5}, {213.5, 320}
// You'll notice that the three widths are 106.5, 107, 106.5.
//
// This is great for the parent views but it gets trickier when we consider rounding for the subview.
//
// When we go to round the bounds for the subview in the middle, it's relative bounds are {0, 106.667}
// which gets rounded to {0, 106.5}. This will cause the subview to be one pixel smaller than it should be.
// this is why we need to pass in the absolute position in order to do the rounding relative to the screen's
// grid rather than the view's grid.
//
// After passing in the absolutePosition of {106.667, y}, we do the following calculations:
// absoluteLeft = round(absolutePosition.x + viewPosition.left) = round(106.667 + 0) = 106.5
// absoluteRight = round(absolutePosition.x + viewPosition.left + viewSize.left) + round(106.667 + 0 + 106.667) = 213.5
// width = 213.5 - 106.5 = 107
// You'll notice that this is the same width we calculated for the parent view because we've taken its position into account.
- (void)applyLayoutNode:(YGNodeRef)node
viewsWithNewFrame:(NSMutableSet<RCTShadowView *> *)viewsWithNewFrame
absolutePosition:(CGPoint)absolutePosition
{
if (!YGNodeGetHasNewLayout(node)) {
return;
}
YGNodeSetHasNewLayout(node, false);
#if RCT_DEBUG
// This works around a breaking change in css-layout where setting flexBasis needs to be set explicitly, instead of relying on flex to propagate.
// We check for it by seeing if a width/height is provided along with a flexBasis of 0 and the width/height is laid out as 0.
if ((!YGValueIsUndefined(YGNodeStyleGetFlexBasis(node)) && YGNodeStyleGetFlexBasis(node) == 0) &&
((!YGValueIsUndefined(YGNodeStyleGetWidth(node)) && YGNodeStyleGetWidth(node) > 0 && YGNodeLayoutGetWidth(node) == 0) ||
(!YGValueIsUndefined(YGNodeStyleGetHeight(node)) && YGNodeStyleGetHeight(node) > 0 && YGNodeLayoutGetHeight(node) == 0))) {
RCTLogError(@"View was rendered with explicitly set width/height but with a 0 flexBasis. (This might be fixed by changing flex: to flexGrow:) View: %@", self);
}
#endif
CGPoint absoluteTopLeft = {
absolutePosition.x + YGNodeLayoutGetLeft(node),
absolutePosition.y + YGNodeLayoutGetTop(node)
};
CGPoint absoluteBottomRight = {
absolutePosition.x + YGNodeLayoutGetLeft(node) + YGNodeLayoutGetWidth(node),
absolutePosition.y + YGNodeLayoutGetTop(node) + YGNodeLayoutGetHeight(node)
};
CGRect frame = {{
RCTRoundPixelValue(YGNodeLayoutGetLeft(node)),
RCTRoundPixelValue(YGNodeLayoutGetTop(node)),
}, {
RCTRoundPixelValue(absoluteBottomRight.x - absoluteTopLeft.x),
RCTRoundPixelValue(absoluteBottomRight.y - absoluteTopLeft.y)
}};
if (!CGRectEqualToRect(frame, _frame)) {
_frame = frame;
[viewsWithNewFrame addObject:self];
}
absolutePosition.x += YGNodeLayoutGetLeft(node);
absolutePosition.y += YGNodeLayoutGetTop(node);
[self applyLayoutToChildren:node viewsWithNewFrame:viewsWithNewFrame absolutePosition:absolutePosition];
}
- (void)applyLayoutToChildren:(YGNodeRef)node
viewsWithNewFrame:(NSMutableSet<RCTShadowView *> *)viewsWithNewFrame
absolutePosition:(CGPoint)absolutePosition
{
for (unsigned int i = 0; i < YGNodeChildCount(node); ++i) {
RCTShadowView *child = (RCTShadowView *)_reactSubviews[i];
[child applyLayoutNode:YGNodeGetChild(node, i)
viewsWithNewFrame:viewsWithNewFrame
absolutePosition:absolutePosition];
}
}
- (NSDictionary<NSString *, id> *)processUpdatedProperties:(NSMutableSet<RCTApplierBlock> *)applierBlocks
parentProperties:(NSDictionary<NSString *, id> *)parentProperties
{
// TODO: we always refresh all propagated properties when propagation is
// dirtied, but really we should track which properties have changed and
// only update those.
if (_didUpdateSubviews) {
_didUpdateSubviews = NO;
[self didUpdateReactSubviews];
[applierBlocks addObject:^(NSDictionary<NSNumber *, UIView *> *viewRegistry) {
UIView *view = viewRegistry[self->_reactTag];
[view clearSortedSubviews];
[view didUpdateReactSubviews];
}];
}
if (!_backgroundColor) {
UIColor *parentBackgroundColor = parentProperties[RCTBackgroundColorProp];
if (parentBackgroundColor) {
[applierBlocks addObject:^(NSDictionary<NSNumber *, UIView *> *viewRegistry) {
UIView *view = viewRegistry[self->_reactTag];
[view reactSetInheritedBackgroundColor:parentBackgroundColor];
}];
}
} else {
// Update parent properties for children
NSMutableDictionary<NSString *, id> *properties = [NSMutableDictionary dictionaryWithDictionary:parentProperties];
CGFloat alpha = CGColorGetAlpha(_backgroundColor.CGColor);
if (alpha < 1.0) {
// If bg is non-opaque, don't propagate further
properties[RCTBackgroundColorProp] = [UIColor clearColor];
} else {
properties[RCTBackgroundColorProp] = _backgroundColor;
}
return properties;
}
return parentProperties;
}
- (void)collectUpdatedProperties:(NSMutableSet<RCTApplierBlock> *)applierBlocks
parentProperties:(NSDictionary<NSString *, id> *)parentProperties
{
if (_propagationLifecycle == RCTUpdateLifecycleComputed && [parentProperties isEqualToDictionary:_lastParentProperties]) {
return;
}
_propagationLifecycle = RCTUpdateLifecycleComputed;
_lastParentProperties = parentProperties;
NSDictionary<NSString *, id> *nextProps = [self processUpdatedProperties:applierBlocks parentProperties:parentProperties];
for (RCTShadowView *child in _reactSubviews) {
[child collectUpdatedProperties:applierBlocks parentProperties:nextProps];
}
}
- (void)collectUpdatedFrames:(NSMutableSet<RCTShadowView *> *)viewsWithNewFrame
withFrame:(CGRect)frame
hidden:(BOOL)hidden
absolutePosition:(CGPoint)absolutePosition
{
if (_hidden != hidden) {
// The hidden state has changed. Even if the frame hasn't changed, add
// this ShadowView to viewsWithNewFrame so the UIManager will process
// this ShadowView's UIView and update its hidden state.
_hidden = hidden;
[viewsWithNewFrame addObject:self];
}
if (!CGRectEqualToRect(frame, _frame)) {
YGNodeStyleSetPositionType(_cssNode, YGPositionTypeAbsolute);
YGNodeStyleSetWidth(_cssNode, frame.size.width);
YGNodeStyleSetHeight(_cssNode, frame.size.height);
YGNodeStyleSetPosition(_cssNode, YGEdgeLeft, frame.origin.x);
YGNodeStyleSetPosition(_cssNode, YGEdgeTop, frame.origin.y);
}
YGNodeCalculateLayout(_cssNode, frame.size.width, frame.size.height, YGDirectionInherit);
[self applyLayoutNode:_cssNode viewsWithNewFrame:viewsWithNewFrame absolutePosition:absolutePosition];
}
- (CGRect)measureLayoutRelativeToAncestor:(RCTShadowView *)ancestor
{
CGPoint offset = CGPointZero;
NSInteger depth = 30; // max depth to search
RCTShadowView *shadowView = self;
while (depth && shadowView && shadowView != ancestor) {
offset.x += shadowView.frame.origin.x;
offset.y += shadowView.frame.origin.y;
shadowView = shadowView->_superview;
depth--;
}
if (ancestor != shadowView) {
return CGRectNull;
}
return (CGRect){offset, self.frame.size};
}
- (BOOL)viewIsDescendantOf:(RCTShadowView *)ancestor
{
NSInteger depth = 30; // max depth to search
RCTShadowView *shadowView = self;
while (depth && shadowView && shadowView != ancestor) {
shadowView = shadowView->_superview;
depth--;
}
return ancestor == shadowView;
}
- (instancetype)init
{
if ((self = [super init])) {
_frame = CGRectMake(0, 0, YGUndefined, YGUndefined);
for (unsigned int ii = 0; ii < META_PROP_COUNT; ii++) {
_paddingMetaProps[ii] = YGUndefined;
_marginMetaProps[ii] = YGUndefined;
_borderMetaProps[ii] = YGUndefined;
}
_newView = YES;
_propagationLifecycle = RCTUpdateLifecycleUninitialized;
_textLifecycle = RCTUpdateLifecycleUninitialized;
_reactSubviews = [NSMutableArray array];
_cssNode = YGNodeNew();
YGNodeSetContext(_cssNode, (__bridge void *)self);
YGNodeSetPrintFunc(_cssNode, RCTPrint);
}
return self;
}
- (BOOL)isReactRootView
{
return RCTIsReactRootView(self.reactTag);
}
- (void)dealloc
{
YGNodeFree(_cssNode);
}
- (BOOL)isCSSLeafNode
{
return NO;
}
- (void)dirtyPropagation
{
if (_propagationLifecycle != RCTUpdateLifecycleDirtied) {
_propagationLifecycle = RCTUpdateLifecycleDirtied;
[_superview dirtyPropagation];
}
}
- (BOOL)isPropagationDirty
{
return _propagationLifecycle != RCTUpdateLifecycleComputed;
}
- (void)dirtyText
{
if (_textLifecycle != RCTUpdateLifecycleDirtied) {
_textLifecycle = RCTUpdateLifecycleDirtied;
[_superview dirtyText];
}
}
- (BOOL)isTextDirty
{
return _textLifecycle != RCTUpdateLifecycleComputed;
}
- (void)setTextComputed
{
_textLifecycle = RCTUpdateLifecycleComputed;
}
- (void)insertReactSubview:(RCTShadowView *)subview atIndex:(NSInteger)atIndex
{
[_reactSubviews insertObject:subview atIndex:atIndex];
if (![self isCSSLeafNode]) {
YGNodeInsertChild(_cssNode, subview.cssNode, (uint32_t)atIndex);
}
subview->_superview = self;
_didUpdateSubviews = YES;
[self dirtyText];
[self dirtyPropagation];
}
- (void)removeReactSubview:(RCTShadowView *)subview
{
[subview dirtyText];
[subview dirtyPropagation];
_didUpdateSubviews = YES;
subview->_superview = nil;
[_reactSubviews removeObject:subview];
if (![self isCSSLeafNode]) {
YGNodeRemoveChild(_cssNode, subview.cssNode);
}
}
- (NSArray<RCTShadowView *> *)reactSubviews
{
return _reactSubviews;
}
- (RCTShadowView *)reactSuperview
{
return _superview;
}
- (NSNumber *)reactTagAtPoint:(CGPoint)point
{
for (RCTShadowView *shadowView in _reactSubviews) {
if (CGRectContainsPoint(shadowView.frame, point)) {
CGPoint relativePoint = point;
CGPoint origin = shadowView.frame.origin;
relativePoint.x -= origin.x;
relativePoint.y -= origin.y;
return [shadowView reactTagAtPoint:relativePoint];
}
}
return self.reactTag;
}
- (NSString *)description
{
NSString *description = super.description;
description = [[description substringToIndex:description.length - 1] stringByAppendingFormat:@"; viewName: %@; reactTag: %@; frame: %@>", self.viewName, self.reactTag, NSStringFromCGRect(self.frame)];
return description;
}
- (void)addRecursiveDescriptionToString:(NSMutableString *)string atLevel:(NSUInteger)level
{
for (NSUInteger i = 0; i < level; i++) {
[string appendString:@" | "];
}
[string appendString:self.description];
[string appendString:@"\n"];
for (RCTShadowView *subview in _reactSubviews) {
[subview addRecursiveDescriptionToString:string atLevel:level + 1];
}
}
- (NSString *)recursiveDescription
{
NSMutableString *description = [NSMutableString string];
[self addRecursiveDescriptionToString:description atLevel:0];
return description;
}
// Margin
#define RCT_MARGIN_PROPERTY(prop, metaProp) \
- (void)setMargin##prop:(float)value \
{ \
_marginMetaProps[META_PROP_##metaProp] = value; \
_recomputeMargin = YES; \
} \
- (float)margin##prop \
{ \
return _marginMetaProps[META_PROP_##metaProp]; \
}
RCT_MARGIN_PROPERTY(, ALL)
RCT_MARGIN_PROPERTY(Vertical, VERTICAL)
RCT_MARGIN_PROPERTY(Horizontal, HORIZONTAL)
RCT_MARGIN_PROPERTY(Top, TOP)
RCT_MARGIN_PROPERTY(Left, LEFT)
RCT_MARGIN_PROPERTY(Bottom, BOTTOM)
RCT_MARGIN_PROPERTY(Right, RIGHT)
// Padding
#define RCT_PADDING_PROPERTY(prop, metaProp) \
- (void)setPadding##prop:(float)value \
{ \
_paddingMetaProps[META_PROP_##metaProp] = value; \
_recomputePadding = YES; \
} \
- (float)padding##prop \
{ \
return _paddingMetaProps[META_PROP_##metaProp]; \
}
RCT_PADDING_PROPERTY(, ALL)
RCT_PADDING_PROPERTY(Vertical, VERTICAL)
RCT_PADDING_PROPERTY(Horizontal, HORIZONTAL)
RCT_PADDING_PROPERTY(Top, TOP)
RCT_PADDING_PROPERTY(Left, LEFT)
RCT_PADDING_PROPERTY(Bottom, BOTTOM)
RCT_PADDING_PROPERTY(Right, RIGHT)
- (UIEdgeInsets)paddingAsInsets
{
if (YGNodeLayoutGetDirection(_cssNode) == YGDirectionRTL) {
return (UIEdgeInsets){
YGNodeStyleGetPadding(_cssNode, YGEdgeTop),
!YGValueIsUndefined(YGNodeStyleGetPadding(_cssNode, YGEdgeEnd)) ?
YGNodeStyleGetPadding(_cssNode, YGEdgeEnd) :
YGNodeStyleGetPadding(_cssNode, YGEdgeLeft),
YGNodeStyleGetPadding(_cssNode, YGEdgeBottom),
!YGValueIsUndefined(YGNodeStyleGetPadding(_cssNode, YGEdgeStart)) ?
YGNodeStyleGetPadding(_cssNode, YGEdgeStart) :
YGNodeStyleGetPadding(_cssNode, YGEdgeRight)
};
} else {
return (UIEdgeInsets){
YGNodeStyleGetPadding(_cssNode, YGEdgeTop),
!YGValueIsUndefined(YGNodeStyleGetPadding(_cssNode, YGEdgeStart)) ?
YGNodeStyleGetPadding(_cssNode, YGEdgeStart) :
YGNodeStyleGetPadding(_cssNode, YGEdgeLeft),
YGNodeStyleGetPadding(_cssNode, YGEdgeBottom),
!YGValueIsUndefined(YGNodeStyleGetPadding(_cssNode, YGEdgeEnd)) ?
YGNodeStyleGetPadding(_cssNode, YGEdgeEnd) :
YGNodeStyleGetPadding(_cssNode, YGEdgeRight)
};
}
}
// Border
#define RCT_BORDER_PROPERTY(prop, metaProp) \
- (void)setBorder##prop##Width:(float)value \
{ \
_borderMetaProps[META_PROP_##metaProp] = value; \
_recomputeBorder = YES; \
} \
- (float)border##prop##Width \
{ \
return _borderMetaProps[META_PROP_##metaProp]; \
}
RCT_BORDER_PROPERTY(, ALL)
RCT_BORDER_PROPERTY(Top, TOP)
RCT_BORDER_PROPERTY(Left, LEFT)
RCT_BORDER_PROPERTY(Bottom, BOTTOM)
RCT_BORDER_PROPERTY(Right, RIGHT)
// Dimensions
#define RCT_DIMENSION_PROPERTY(setProp, getProp, cssProp) \
- (void)set##setProp:(float)value \
{ \
YGNodeStyleSet##cssProp(_cssNode, value); \
[self dirtyText]; \
} \
- (float)getProp \
{ \
return YGNodeStyleGet##cssProp(_cssNode); \
}
RCT_DIMENSION_PROPERTY(Width, width, Width)
RCT_DIMENSION_PROPERTY(Height, height, Height)
RCT_DIMENSION_PROPERTY(MinWidth, minWidth, MinWidth)
RCT_DIMENSION_PROPERTY(MinHeight, minHeight, MinHeight)
RCT_DIMENSION_PROPERTY(MaxWidth, maxWidth, MaxWidth)
RCT_DIMENSION_PROPERTY(MaxHeight, maxHeight, MaxHeight)
// Position
#define RCT_POSITION_PROPERTY(setProp, getProp, edge) \
- (void)set##setProp:(float)value \
{ \
YGNodeStyleSetPosition(_cssNode, edge, value); \
[self dirtyText]; \
} \
- (float)getProp \
{ \
return YGNodeStyleGetPosition(_cssNode, edge); \
}
RCT_POSITION_PROPERTY(Top, top, YGEdgeTop)
RCT_POSITION_PROPERTY(Right, right, YGEdgeEnd)
RCT_POSITION_PROPERTY(Bottom, bottom, YGEdgeBottom)
RCT_POSITION_PROPERTY(Left, left, YGEdgeStart)
- (void)setFrame:(CGRect)frame
{
if (!CGRectEqualToRect(frame, _frame)) {
_frame = frame;
YGNodeStyleSetPosition(_cssNode, YGEdgeLeft, CGRectGetMinX(frame));
YGNodeStyleSetPosition(_cssNode, YGEdgeTop, CGRectGetMinY(frame));
YGNodeStyleSetWidth(_cssNode, CGRectGetWidth(frame));
YGNodeStyleSetHeight(_cssNode, CGRectGetHeight(frame));
}
}
static inline void RCTAssignSuggestedDimension(YGNodeRef cssNode, YGDimension dimension, CGFloat amount)
{
if (amount != UIViewNoIntrinsicMetric) {
switch (dimension) {
case YGDimensionWidth:
if (isnan(YGNodeStyleGetWidth(cssNode))) {
YGNodeStyleSetWidth(cssNode, amount);
}
break;
case YGDimensionHeight:
if (isnan(YGNodeStyleGetHeight(cssNode))) {
YGNodeStyleSetHeight(cssNode, amount);
}
break;
case YGDimensionCount:
break;
}
}
}
- (void)setIntrinsicContentSize:(CGSize)size
{
if (YGNodeStyleGetFlexGrow(_cssNode) == 0 && YGNodeStyleGetFlexShrink(_cssNode) == 0) {
RCTAssignSuggestedDimension(_cssNode, YGDimensionHeight, size.height);
RCTAssignSuggestedDimension(_cssNode, YGDimensionWidth, size.width);
}
}
- (void)setTopLeft:(CGPoint)topLeft
{
YGNodeStyleSetPosition(_cssNode, YGEdgeLeft, topLeft.x);
YGNodeStyleSetPosition(_cssNode, YGEdgeTop, topLeft.y);
}
- (void)setSize:(CGSize)size
{
YGNodeStyleSetWidth(_cssNode, size.width);
YGNodeStyleSetHeight(_cssNode, size.height);
}
// Flex
- (void)setFlex:(float)value
{
YGNodeStyleSetFlex(_cssNode, value);
}
#define RCT_STYLE_PROPERTY(setProp, getProp, cssProp, type) \
- (void)set##setProp:(type)value \
{ \
YGNodeStyleSet##cssProp(_cssNode, value); \
} \
- (type)getProp \
{ \
return YGNodeStyleGet##cssProp(_cssNode); \
}
RCT_STYLE_PROPERTY(FlexGrow, flexGrow, FlexGrow, float)
RCT_STYLE_PROPERTY(FlexShrink, flexShrink, FlexShrink, float)
RCT_STYLE_PROPERTY(FlexBasis, flexBasis, FlexBasis, float)
RCT_STYLE_PROPERTY(FlexDirection, flexDirection, FlexDirection, YGFlexDirection)
RCT_STYLE_PROPERTY(JustifyContent, justifyContent, JustifyContent, YGJustify)
RCT_STYLE_PROPERTY(AlignSelf, alignSelf, AlignSelf, YGAlign)
RCT_STYLE_PROPERTY(AlignItems, alignItems, AlignItems, YGAlign)
RCT_STYLE_PROPERTY(Position, position, PositionType, YGPositionType)
RCT_STYLE_PROPERTY(FlexWrap, flexWrap, FlexWrap, YGWrap)
RCT_STYLE_PROPERTY(Overflow, overflow, Overflow, YGOverflow)
RCT_STYLE_PROPERTY(AspectRatio, aspectRatio, AspectRatio, float)
- (void)setBackgroundColor:(UIColor *)color
{
_backgroundColor = color;
[self dirtyPropagation];
}
- (void)setZIndex:(NSInteger)zIndex
{
_zIndex = zIndex;
if (_superview) {
// Changing zIndex means the subview order of the parent needs updating
_superview->_didUpdateSubviews = YES;
[_superview dirtyPropagation];
}
}
- (void)didUpdateReactSubviews
{
// Does nothing by default
}
- (void)didSetProps:(__unused NSArray<NSString *> *)changedProps
{
if (_recomputePadding) {
RCTProcessMetaPropsPadding(_paddingMetaProps, _cssNode);
}
if (_recomputeMargin) {
RCTProcessMetaPropsMargin(_marginMetaProps, _cssNode);
}
if (_recomputeBorder) {
RCTProcessMetaPropsBorder(_borderMetaProps, _cssNode);
}
_recomputeMargin = NO;
_recomputePadding = NO;
_recomputeBorder = NO;
}
@end
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