import latest changes from github

Differential Revision: D2536028

fb-gh-sync-id: 2d28b10f06b4ab3a9113b7870e58faf6debba9b6
This commit is contained in:
Felix Oghină 2015-10-13 06:45:18 -07:00 committed by facebook-github-bot-5
parent c73ceff914
commit b721c12516
7 changed files with 180 additions and 134 deletions

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@ -7,7 +7,7 @@
*/
// NOTE: this file is auto-copied from https://github.com/facebook/css-layout
// @generated SignedSource<<638f16255d86b878b0377e1070cc2b44>>
// @generated SignedSource<<1e547b3af02a275fe73089e5a0a172c5>>
package com.facebook.csslayout;

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@ -7,7 +7,7 @@
*/
// NOTE: this file is auto-copied from https://github.com/facebook/css-layout
// @generated SignedSource<<560f2fd13ec8e1100a71958529146055>>
// @generated SignedSource<<dea2f20b2f05b18bed5e32b4d048a7b2>>
package com.facebook.csslayout;
@ -118,7 +118,7 @@ public class CSSNode {
}
public void setMeasureFunction(MeasureFunction measureFunction) {
if (!valuesEqual(mMeasureFunction, measureFunction)) {
if (mMeasureFunction != measureFunction) {
mMeasureFunction = measureFunction;
dirty();
}
@ -224,57 +224,50 @@ public class CSSNode {
return FloatUtil.floatsEqual(f1, f2);
}
protected <T> boolean valuesEqual(@Nullable T o1, @Nullable T o2) {
if (o1 == null) {
return o2 == null;
}
return o1.equals(o2);
}
public void setDirection(CSSDirection direction) {
if (!valuesEqual(style.direction, direction)) {
if (style.direction != direction) {
style.direction = direction;
dirty();
}
}
public void setFlexDirection(CSSFlexDirection flexDirection) {
if (!valuesEqual(style.flexDirection, flexDirection)) {
if (style.flexDirection != flexDirection) {
style.flexDirection = flexDirection;
dirty();
}
}
public void setJustifyContent(CSSJustify justifyContent) {
if (!valuesEqual(style.justifyContent, justifyContent)) {
if (style.justifyContent != justifyContent) {
style.justifyContent = justifyContent;
dirty();
}
}
public void setAlignItems(CSSAlign alignItems) {
if (!valuesEqual(style.alignItems, alignItems)) {
if (style.alignItems != alignItems) {
style.alignItems = alignItems;
dirty();
}
}
public void setAlignSelf(CSSAlign alignSelf) {
if (!valuesEqual(style.alignSelf, alignSelf)) {
if (style.alignSelf != alignSelf) {
style.alignSelf = alignSelf;
dirty();
}
}
public void setPositionType(CSSPositionType positionType) {
if (!valuesEqual(style.positionType, positionType)) {
if (style.positionType != positionType) {
style.positionType = positionType;
dirty();
}
}
public void setWrap(CSSWrap flexWrap) {
if (!valuesEqual(style.flexWrap, flexWrap)) {
if (style.flexWrap != flexWrap) {
style.flexWrap = flexWrap;
dirty();
}
@ -403,4 +396,19 @@ public class CSSNode {
dirty();
}
}
/**
* Resets this instance to its default state. This method is meant to be used when
* recycling {@link CSSNode} instances.
*/
public void reset() {
if (mParent != null || (mChildren != null && mChildren.size() > 0)) {
throw new IllegalStateException("You should not reset an attached CSSNode");
}
style.reset();
layout.resetResult();
lineIndex = 0;
mLayoutState = LayoutState.DIRTY;
}
}

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@ -7,44 +7,66 @@
*/
// NOTE: this file is auto-copied from https://github.com/facebook/css-layout
// @generated SignedSource<<2fc400ad927a17e1b13430210531ce86>>
// @generated SignedSource<<4c7c75ffd4800aee843a5f5828f3e3ab>>
package com.facebook.csslayout;
import java.util.Arrays;
/**
* The CSS style definition for a {@link CSSNode}.
*/
public class CSSStyle {
public CSSDirection direction = CSSDirection.INHERIT;
public CSSFlexDirection flexDirection = CSSFlexDirection.COLUMN;
public CSSJustify justifyContent = CSSJustify.FLEX_START;
public CSSAlign alignContent = CSSAlign.FLEX_START;
public CSSAlign alignItems = CSSAlign.STRETCH;
public CSSAlign alignSelf = CSSAlign.AUTO;
public CSSPositionType positionType = CSSPositionType.RELATIVE;
public CSSWrap flexWrap = CSSWrap.NOWRAP;
public CSSDirection direction;
public CSSFlexDirection flexDirection;
public CSSJustify justifyContent;
public CSSAlign alignContent;
public CSSAlign alignItems;
public CSSAlign alignSelf;
public CSSPositionType positionType;
public CSSWrap flexWrap;
public float flex;
public Spacing margin = new Spacing();
public Spacing padding = new Spacing();
public Spacing border = new Spacing();
public float[] position = {
CSSConstants.UNDEFINED,
CSSConstants.UNDEFINED,
CSSConstants.UNDEFINED,
CSSConstants.UNDEFINED,
};
public float[] dimensions = {
CSSConstants.UNDEFINED,
CSSConstants.UNDEFINED,
};
public float[] position = new float[4];
public float[] dimensions = new float[2];
public float minWidth = CSSConstants.UNDEFINED;
public float minHeight = CSSConstants.UNDEFINED;
public float maxWidth = CSSConstants.UNDEFINED;
public float maxHeight = CSSConstants.UNDEFINED;
CSSStyle() {
reset();
}
void reset() {
direction = CSSDirection.INHERIT;
flexDirection = CSSFlexDirection.COLUMN;
justifyContent = CSSJustify.FLEX_START;
alignContent = CSSAlign.FLEX_START;
alignItems = CSSAlign.STRETCH;
alignSelf = CSSAlign.AUTO;
positionType = CSSPositionType.RELATIVE;
flexWrap = CSSWrap.NOWRAP;
flex = 0f;
margin.reset();;
padding.reset();
border.reset();
Arrays.fill(position, CSSConstants.UNDEFINED);
Arrays.fill(dimensions, CSSConstants.UNDEFINED);
minWidth = CSSConstants.UNDEFINED;
minHeight = CSSConstants.UNDEFINED;
maxWidth = CSSConstants.UNDEFINED;
maxHeight = CSSConstants.UNDEFINED;
}
}

View File

@ -7,7 +7,7 @@
*/
// NOTE: this file is auto-copied from https://github.com/facebook/css-layout
// @generated SignedSource<<b8b881922a917015f33e0b1d70b8202b>>
// @generated SignedSource<<c4feb337df98136c86629cf72c93f049>>
package com.facebook.csslayout;
@ -109,7 +109,7 @@ public class LayoutEngine {
return;
}
// We only run if there's a width or height defined
if (Float.isNaN(node.style.dimensions[dim[axis]]) ||
if (Float.isNaN(node.style.dimensions[dim[axis]]) ||
node.style.dimensions[dim[axis]] <= 0.0) {
return;
}
@ -223,19 +223,19 @@ public class LayoutEngine {
}
/** START_GENERATED **/
CSSDirection direction = resolveDirection(node, parentDirection);
int mainAxis = resolveAxis(getFlexDirection(node), direction);
int crossAxis = getCrossFlexDirection(mainAxis, direction);
int resolvedRowAxis = resolveAxis(CSS_FLEX_DIRECTION_ROW, direction);
// Handle width and height style attributes
setDimensionFromStyle(node, mainAxis);
setDimensionFromStyle(node, crossAxis);
// Set the resolved resolution in the node's layout
node.layout.direction = direction;
// The position is set by the parent, but we need to complete it with a
// delta composed of the margin and left/top/right/bottom
node.layout.position[leading[mainAxis]] += node.style.margin.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) +
@ -246,15 +246,15 @@ public class LayoutEngine {
getRelativePosition(node, crossAxis);
node.layout.position[trailing[crossAxis]] += node.style.margin.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis]) +
getRelativePosition(node, crossAxis);
// Inline immutable values from the target node to avoid excessive method
// invocations during the layout calculation.
int childCount = node.getChildCount();
float paddingAndBorderAxisResolvedRow = ((node.style.padding.getWithFallback(leadingSpacing[resolvedRowAxis], leading[resolvedRowAxis]) + node.style.border.getWithFallback(leadingSpacing[resolvedRowAxis], leading[resolvedRowAxis])) + (node.style.padding.getWithFallback(trailingSpacing[resolvedRowAxis], trailing[resolvedRowAxis]) + node.style.border.getWithFallback(trailingSpacing[resolvedRowAxis], trailing[resolvedRowAxis])));
if (isMeasureDefined(node)) {
boolean isResolvedRowDimDefined = !Float.isNaN(node.layout.dimensions[dim[resolvedRowAxis]]);
float width = CSSConstants.UNDEFINED;
if ((!Float.isNaN(node.style.dimensions[dim[resolvedRowAxis]]) && node.style.dimensions[dim[resolvedRowAxis]] >= 0.0)) {
width = node.style.dimensions[DIMENSION_WIDTH];
@ -265,18 +265,18 @@ public class LayoutEngine {
(node.style.margin.getWithFallback(leadingSpacing[resolvedRowAxis], leading[resolvedRowAxis]) + node.style.margin.getWithFallback(trailingSpacing[resolvedRowAxis], trailing[resolvedRowAxis]));
}
width -= paddingAndBorderAxisResolvedRow;
// We only need to give a dimension for the text if we haven't got any
// for it computed yet. It can either be from the style attribute or because
// the element is flexible.
boolean isRowUndefined = !(!Float.isNaN(node.style.dimensions[dim[resolvedRowAxis]]) && node.style.dimensions[dim[resolvedRowAxis]] >= 0.0) && !isResolvedRowDimDefined;
boolean isColumnUndefined = !(!Float.isNaN(node.style.dimensions[dim[CSS_FLEX_DIRECTION_COLUMN]]) && node.style.dimensions[dim[CSS_FLEX_DIRECTION_COLUMN]] >= 0.0) &&
Float.isNaN(node.layout.dimensions[dim[CSS_FLEX_DIRECTION_COLUMN]]);
// Let's not measure the text if we already know both dimensions
if (isRowUndefined || isColumnUndefined) {
MeasureOutput measureDim = node.measure(
layoutContext.measureOutput,
width
);
@ -293,33 +293,33 @@ public class LayoutEngine {
return;
}
}
boolean isNodeFlexWrap = (node.style.flexWrap == CSSWrap.WRAP);
CSSJustify justifyContent = node.style.justifyContent;
float leadingPaddingAndBorderMain = (node.style.padding.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + node.style.border.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]));
float leadingPaddingAndBorderCross = (node.style.padding.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) + node.style.border.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]));
float paddingAndBorderAxisMain = ((node.style.padding.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + node.style.border.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis])) + (node.style.padding.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]) + node.style.border.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis])));
float paddingAndBorderAxisCross = ((node.style.padding.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) + node.style.border.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis])) + (node.style.padding.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis]) + node.style.border.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis])));
boolean isMainDimDefined = !Float.isNaN(node.layout.dimensions[dim[mainAxis]]);
boolean isCrossDimDefined = !Float.isNaN(node.layout.dimensions[dim[crossAxis]]);
boolean isMainRowDirection = (mainAxis == CSS_FLEX_DIRECTION_ROW || mainAxis == CSS_FLEX_DIRECTION_ROW_REVERSE);
int i;
int ii;
CSSNode child;
int axis;
CSSNode firstAbsoluteChild = null;
CSSNode currentAbsoluteChild = null;
float definedMainDim = CSSConstants.UNDEFINED;
if (isMainDimDefined) {
definedMainDim = node.layout.dimensions[dim[mainAxis]] - paddingAndBorderAxisMain;
}
// We want to execute the next two loops one per line with flex-wrap
int startLine = 0;
int endLine = 0;
@ -331,19 +331,19 @@ public class LayoutEngine {
int linesCount = 0;
while (endLine < childCount) {
// <Loop A> Layout non flexible children and count children by type
// mainContentDim is accumulation of the dimensions and margin of all the
// non flexible children. This will be used in order to either set the
// dimensions of the node if none already exist, or to compute the
// remaining space left for the flexible children.
float mainContentDim = 0;
// There are three kind of children, non flexible, flexible and absolute.
// We need to know how many there are in order to distribute the space.
int flexibleChildrenCount = 0;
float totalFlexible = 0;
int nonFlexibleChildrenCount = 0;
// Use the line loop to position children in the main axis for as long
// as they are using a simple stacking behaviour. Children that are
// immediately stacked in the initial loop will not be touched again
@ -352,30 +352,30 @@ public class LayoutEngine {
(isMainDimDefined && justifyContent == CSSJustify.FLEX_START) ||
(!isMainDimDefined && justifyContent != CSSJustify.CENTER);
int firstComplexMain = (isSimpleStackMain ? childCount : startLine);
// Use the initial line loop to position children in the cross axis for
// as long as they are relatively positioned with alignment STRETCH or
// FLEX_START. Children that are immediately stacked in the initial loop
// will not be touched again in <Loop D>.
boolean isSimpleStackCross = true;
int firstComplexCross = childCount;
CSSNode firstFlexChild = null;
CSSNode currentFlexChild = null;
float mainDim = leadingPaddingAndBorderMain;
float crossDim = 0;
float maxWidth;
for (i = startLine; i < childCount; ++i) {
child = node.getChildAt(i);
child.lineIndex = linesCount;
child.nextAbsoluteChild = null;
child.nextFlexChild = null;
CSSAlign alignItem = getAlignItem(node, child);
// Pre-fill cross axis dimensions when the child is using stretch before
// we call the recursive layout pass
if (alignItem == CSSAlign.STRETCH &&
@ -398,7 +398,7 @@ public class LayoutEngine {
currentAbsoluteChild.nextAbsoluteChild = child;
}
currentAbsoluteChild = child;
// Pre-fill dimensions when using absolute position and both offsets for the axis are defined (either both
// left and right or top and bottom).
for (ii = 0; ii < 2; ii++) {
@ -419,15 +419,15 @@ public class LayoutEngine {
}
}
}
float nextContentDim = 0;
// It only makes sense to consider a child flexible if we have a computed
// dimension for the node.
if (isMainDimDefined && (child.style.positionType == CSSPositionType.RELATIVE && child.style.flex > 0)) {
flexibleChildrenCount++;
totalFlexible += child.style.flex;
// Store a private linked list of flexible children so that we can
// efficiently traverse them later.
if (firstFlexChild == null) {
@ -437,14 +437,14 @@ public class LayoutEngine {
currentFlexChild.nextFlexChild = child;
}
currentFlexChild = child;
// Even if we don't know its exact size yet, we already know the padding,
// border and margin. We'll use this partial information, which represents
// the smallest possible size for the child, to compute the remaining
// available space.
nextContentDim = ((child.style.padding.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + child.style.border.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis])) + (child.style.padding.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]) + child.style.border.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]))) +
(child.style.margin.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + child.style.margin.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]));
} else {
maxWidth = CSSConstants.UNDEFINED;
if (!isMainRowDirection) {
@ -457,12 +457,12 @@ public class LayoutEngine {
paddingAndBorderAxisResolvedRow;
}
}
// This is the main recursive call. We layout non flexible children.
if (alreadyComputedNextLayout == 0) {
layoutNode(layoutContext, child, maxWidth, direction);
}
// Absolute positioned elements do not take part of the layout, so we
// don't use them to compute mainContentDim
if (child.style.positionType == CSSPositionType.RELATIVE) {
@ -471,7 +471,7 @@ public class LayoutEngine {
nextContentDim = (child.layout.dimensions[dim[mainAxis]] + child.style.margin.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + child.style.margin.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]));
}
}
// The element we are about to add would make us go to the next line
if (isNodeFlexWrap &&
isMainDimDefined &&
@ -483,7 +483,7 @@ public class LayoutEngine {
alreadyComputedNextLayout = 1;
break;
}
// Disable simple stacking in the main axis for the current line as
// we found a non-trivial child. The remaining children will be laid out
// in <Loop C>.
@ -492,7 +492,7 @@ public class LayoutEngine {
isSimpleStackMain = false;
firstComplexMain = i;
}
// Disable simple stacking in the cross axis for the current line as
// we found a non-trivial child. The remaining children will be laid out
// in <Loop D>.
@ -503,37 +503,37 @@ public class LayoutEngine {
isSimpleStackCross = false;
firstComplexCross = i;
}
if (isSimpleStackMain) {
child.layout.position[pos[mainAxis]] += mainDim;
if (isMainDimDefined) {
child.layout.position[trailing[mainAxis]] = node.layout.dimensions[dim[mainAxis]] - child.layout.dimensions[dim[mainAxis]] - child.layout.position[pos[mainAxis]];
}
mainDim += (child.layout.dimensions[dim[mainAxis]] + child.style.margin.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + child.style.margin.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]));
crossDim = Math.max(crossDim, boundAxis(child, crossAxis, (child.layout.dimensions[dim[crossAxis]] + child.style.margin.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) + child.style.margin.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis]))));
}
if (isSimpleStackCross) {
child.layout.position[pos[crossAxis]] += linesCrossDim + leadingPaddingAndBorderCross;
if (isCrossDimDefined) {
child.layout.position[trailing[crossAxis]] = node.layout.dimensions[dim[crossAxis]] - child.layout.dimensions[dim[crossAxis]] - child.layout.position[pos[crossAxis]];
}
}
alreadyComputedNextLayout = 0;
mainContentDim += nextContentDim;
endLine = i + 1;
}
// <Loop B> Layout flexible children and allocate empty space
// In order to position the elements in the main axis, we have two
// controls. The space between the beginning and the first element
// and the space between each two elements.
float leadingMainDim = 0;
float betweenMainDim = 0;
// The remaining available space that needs to be allocated
float remainingMainDim = 0;
if (isMainDimDefined) {
@ -541,14 +541,14 @@ public class LayoutEngine {
} else {
remainingMainDim = Math.max(mainContentDim, 0) - mainContentDim;
}
// If there are flexible children in the mix, they are going to fill the
// remaining space
if (flexibleChildrenCount != 0) {
float flexibleMainDim = remainingMainDim / totalFlexible;
float baseMainDim;
float boundMainDim;
// If the flex share of remaining space doesn't meet min/max bounds,
// remove this child from flex calculations.
currentFlexChild = firstFlexChild;
@ -556,22 +556,22 @@ public class LayoutEngine {
baseMainDim = flexibleMainDim * currentFlexChild.style.flex +
((currentFlexChild.style.padding.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + currentFlexChild.style.border.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis])) + (currentFlexChild.style.padding.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]) + currentFlexChild.style.border.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis])));
boundMainDim = boundAxis(currentFlexChild, mainAxis, baseMainDim);
if (baseMainDim != boundMainDim) {
remainingMainDim -= boundMainDim;
totalFlexible -= currentFlexChild.style.flex;
}
currentFlexChild = currentFlexChild.nextFlexChild;
}
flexibleMainDim = remainingMainDim / totalFlexible;
// The non flexible children can overflow the container, in this case
// we should just assume that there is no space available.
if (flexibleMainDim < 0) {
flexibleMainDim = 0;
}
currentFlexChild = firstFlexChild;
while (currentFlexChild != null) {
// At this point we know the final size of the element in the main
@ -580,7 +580,7 @@ public class LayoutEngine {
flexibleMainDim * currentFlexChild.style.flex +
((currentFlexChild.style.padding.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis]) + currentFlexChild.style.border.getWithFallback(leadingSpacing[mainAxis], leading[mainAxis])) + (currentFlexChild.style.padding.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis]) + currentFlexChild.style.border.getWithFallback(trailingSpacing[mainAxis], trailing[mainAxis])))
);
maxWidth = CSSConstants.UNDEFINED;
if ((!Float.isNaN(node.style.dimensions[dim[resolvedRowAxis]]) && node.style.dimensions[dim[resolvedRowAxis]] >= 0.0)) {
maxWidth = node.layout.dimensions[dim[resolvedRowAxis]] -
@ -590,15 +590,15 @@ public class LayoutEngine {
(node.style.margin.getWithFallback(leadingSpacing[resolvedRowAxis], leading[resolvedRowAxis]) + node.style.margin.getWithFallback(trailingSpacing[resolvedRowAxis], trailing[resolvedRowAxis])) -
paddingAndBorderAxisResolvedRow;
}
// And we recursively call the layout algorithm for this child
layoutNode(layoutContext, currentFlexChild, maxWidth, direction);
child = currentFlexChild;
currentFlexChild = currentFlexChild.nextFlexChild;
child.nextFlexChild = null;
}
// We use justifyContent to figure out how to allocate the remaining
// space available
} else if (justifyContent != CSSJustify.FLEX_START) {
@ -621,18 +621,18 @@ public class LayoutEngine {
leadingMainDim = betweenMainDim / 2;
}
}
// <Loop C> Position elements in the main axis and compute dimensions
// At this point, all the children have their dimensions set. We need to
// find their position. In order to do that, we accumulate data in
// variables that are also useful to compute the total dimensions of the
// container!
mainDim += leadingMainDim;
for (i = firstComplexMain; i < endLine; ++i) {
child = node.getChildAt(i);
if (child.style.positionType == CSSPositionType.ABSOLUTE &&
!Float.isNaN(child.style.position[leading[mainAxis]])) {
// In case the child is position absolute and has left/top being
@ -645,12 +645,12 @@ public class LayoutEngine {
// If the child is position absolute (without top/left) or relative,
// we put it at the current accumulated offset.
child.layout.position[pos[mainAxis]] += mainDim;
// Define the trailing position accordingly.
if (isMainDimDefined) {
child.layout.position[trailing[mainAxis]] = node.layout.dimensions[dim[mainAxis]] - child.layout.dimensions[dim[mainAxis]] - child.layout.position[pos[mainAxis]];
}
// Now that we placed the element, we need to update the variables
// We only need to do that for relative elements. Absolute elements
// do not take part in that phase.
@ -664,7 +664,7 @@ public class LayoutEngine {
}
}
}
float containerCrossAxis = node.layout.dimensions[dim[crossAxis]];
if (!isCrossDimDefined) {
containerCrossAxis = Math.max(
@ -675,11 +675,11 @@ public class LayoutEngine {
paddingAndBorderAxisCross
);
}
// <Loop D> Position elements in the cross axis
for (i = firstComplexCross; i < endLine; ++i) {
child = node.getChildAt(i);
if (child.style.positionType == CSSPositionType.ABSOLUTE &&
!Float.isNaN(child.style.position[leading[crossAxis]])) {
// In case the child is absolutely positionned and has a
@ -688,18 +688,21 @@ public class LayoutEngine {
child.layout.position[pos[crossAxis]] = (Float.isNaN(child.style.position[leading[crossAxis]]) ? 0 : child.style.position[leading[crossAxis]]) +
node.style.border.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) +
child.style.margin.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]);
} else {
float leadingCrossDim = leadingPaddingAndBorderCross;
// For a relative children, we're either using alignItems (parent) or
// alignSelf (child) in order to determine the position in the cross axis
if (child.style.positionType == CSSPositionType.RELATIVE) {
/*eslint-disable */
// This variable is intentionally re-defined as the code is transpiled to a block scope language
CSSAlign alignItem = getAlignItem(node, child);
/*eslint-enable */
if (alignItem == CSSAlign.STRETCH) {
// You can only stretch if the dimension has not already been set
// previously.
if (!(!Float.isNaN(child.style.dimensions[dim[crossAxis]]) && child.style.dimensions[dim[crossAxis]] > 0.0)) {
if (Float.isNaN(child.layout.dimensions[dim[crossAxis]])) {
child.layout.dimensions[dim[crossAxis]] = Math.max(
boundAxis(child, crossAxis, containerCrossAxis -
paddingAndBorderAxisCross - (child.style.margin.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) + child.style.margin.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis]))),
@ -712,7 +715,7 @@ public class LayoutEngine {
// dimensions+margin.
float remainingCrossDim = containerCrossAxis -
paddingAndBorderAxisCross - (child.layout.dimensions[dim[crossAxis]] + child.style.margin.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]) + child.style.margin.getWithFallback(trailingSpacing[crossAxis], trailing[crossAxis]));
if (alignItem == CSSAlign.CENTER) {
leadingCrossDim += remainingCrossDim / 2;
} else { // CSSAlign.FLEX_END
@ -720,23 +723,23 @@ public class LayoutEngine {
}
}
}
// And we apply the position
child.layout.position[pos[crossAxis]] += linesCrossDim + leadingCrossDim;
// Define the trailing position accordingly.
if (isCrossDimDefined) {
child.layout.position[trailing[crossAxis]] = node.layout.dimensions[dim[crossAxis]] - child.layout.dimensions[dim[crossAxis]] - child.layout.position[pos[crossAxis]];
}
}
}
linesCrossDim += crossDim;
linesMainDim = Math.max(linesMainDim, mainDim);
linesCount += 1;
startLine = endLine;
}
// <Loop E>
//
// Note(prenaux): More than one line, we need to layout the crossAxis
@ -754,10 +757,10 @@ public class LayoutEngine {
float nodeCrossAxisInnerSize = node.layout.dimensions[dim[crossAxis]] -
paddingAndBorderAxisCross;
float remainingAlignContentDim = nodeCrossAxisInnerSize - linesCrossDim;
float crossDimLead = 0;
float currentLead = leadingPaddingAndBorderCross;
CSSAlign alignContent = node.style.alignContent;
if (alignContent == CSSAlign.FLEX_END) {
currentLead += remainingAlignContentDim;
@ -768,11 +771,11 @@ public class LayoutEngine {
crossDimLead = (remainingAlignContentDim / linesCount);
}
}
int endIndex = 0;
for (i = 0; i < linesCount; ++i) {
int startIndex = endIndex;
// compute the line's height and find the endIndex
float lineHeight = 0;
for (ii = startIndex; ii < childCount; ++ii) {
@ -792,13 +795,13 @@ public class LayoutEngine {
}
endIndex = ii;
lineHeight += crossDimLead;
for (ii = startIndex; ii < endIndex; ++ii) {
child = node.getChildAt(ii);
if (child.style.positionType != CSSPositionType.RELATIVE) {
continue;
}
CSSAlign alignContentAlignItem = getAlignItem(node, child);
if (alignContentAlignItem == CSSAlign.FLEX_START) {
child.layout.position[pos[crossAxis]] = currentLead + child.style.margin.getWithFallback(leadingSpacing[crossAxis], leading[crossAxis]);
@ -813,14 +816,14 @@ public class LayoutEngine {
// (auto) crossAxis dimension.
}
}
currentLead += lineHeight;
}
}
boolean needsMainTrailingPos = false;
boolean needsCrossTrailingPos = false;
// If the user didn't specify a width or height, and it has not been set
// by the container, then we set it via the children.
if (!isMainDimDefined) {
@ -831,13 +834,13 @@ public class LayoutEngine {
// We can never assign a width smaller than the padding and borders
paddingAndBorderAxisMain
);
if (mainAxis == CSS_FLEX_DIRECTION_ROW_REVERSE ||
mainAxis == CSS_FLEX_DIRECTION_COLUMN_REVERSE) {
needsMainTrailingPos = true;
}
}
if (!isCrossDimDefined) {
node.layout.dimensions[dim[crossAxis]] = Math.max(
// For the cross dim, we add both sides at the end because the value
@ -846,28 +849,28 @@ public class LayoutEngine {
boundAxis(node, crossAxis, linesCrossDim + paddingAndBorderAxisCross),
paddingAndBorderAxisCross
);
if (crossAxis == CSS_FLEX_DIRECTION_ROW_REVERSE ||
crossAxis == CSS_FLEX_DIRECTION_COLUMN_REVERSE) {
needsCrossTrailingPos = true;
}
}
// <Loop F> Set trailing position if necessary
if (needsMainTrailingPos || needsCrossTrailingPos) {
for (i = 0; i < childCount; ++i) {
child = node.getChildAt(i);
if (needsMainTrailingPos) {
child.layout.position[trailing[mainAxis]] = node.layout.dimensions[dim[mainAxis]] - child.layout.dimensions[dim[mainAxis]] - child.layout.position[pos[mainAxis]];
}
if (needsCrossTrailingPos) {
child.layout.position[trailing[crossAxis]] = node.layout.dimensions[dim[crossAxis]] - child.layout.dimensions[dim[crossAxis]] - child.layout.position[pos[crossAxis]];
}
}
}
// <Loop G> Calculate dimensions for absolutely positioned elements
currentAbsoluteChild = firstAbsoluteChild;
while (currentAbsoluteChild != null) {
@ -875,7 +878,7 @@ public class LayoutEngine {
// the axis are defined (either both left and right or top and bottom).
for (ii = 0; ii < 2; ii++) {
axis = (ii != 0) ? CSS_FLEX_DIRECTION_ROW : CSS_FLEX_DIRECTION_COLUMN;
if (!Float.isNaN(node.layout.dimensions[dim[axis]]) &&
!(!Float.isNaN(currentAbsoluteChild.style.dimensions[dim[axis]]) && currentAbsoluteChild.style.dimensions[dim[axis]] >= 0.0) &&
!Float.isNaN(currentAbsoluteChild.style.position[leading[axis]]) &&
@ -891,7 +894,7 @@ public class LayoutEngine {
((currentAbsoluteChild.style.padding.getWithFallback(leadingSpacing[axis], leading[axis]) + currentAbsoluteChild.style.border.getWithFallback(leadingSpacing[axis], leading[axis])) + (currentAbsoluteChild.style.padding.getWithFallback(trailingSpacing[axis], trailing[axis]) + currentAbsoluteChild.style.border.getWithFallback(trailingSpacing[axis], trailing[axis])))
);
}
if (!Float.isNaN(currentAbsoluteChild.style.position[trailing[axis]]) &&
!!Float.isNaN(currentAbsoluteChild.style.position[leading[axis]])) {
currentAbsoluteChild.layout.position[leading[axis]] =
@ -900,7 +903,7 @@ public class LayoutEngine {
(Float.isNaN(currentAbsoluteChild.style.position[trailing[axis]]) ? 0 : currentAbsoluteChild.style.position[trailing[axis]]);
}
}
child = currentAbsoluteChild;
currentAbsoluteChild = currentAbsoluteChild.nextAbsoluteChild;
child.nextAbsoluteChild = null;

View File

@ -1,7 +1,7 @@
The source of truth for css-layout is: https://github.com/facebook/css-layout
The code here should be kept in sync with GitHub.
HEAD at the time this code was synced: https://github.com/facebook/css-layout/commit/f51c2d004de7744f9cefb98aa2a9c1c22168d49c
HEAD at the time this code was synced: https://github.com/facebook/css-layout/commit/4b4cd06be2f0cd2aea476e893c60443082826fb8
There is generated code in:
- README (this file)

View File

@ -1,7 +1,7 @@
The source of truth for css-layout is: https://github.com/facebook/css-layout
The code here should be kept in sync with GitHub.
HEAD at the time this code was synced: https://github.com/facebook/css-layout/commit/f51c2d004de7744f9cefb98aa2a9c1c22168d49c
HEAD at the time this code was synced: https://github.com/facebook/css-layout/commit/4b4cd06be2f0cd2aea476e893c60443082826fb8
There is generated code in:
- README.facebook (this file)

View File

@ -7,12 +7,14 @@
*/
// NOTE: this file is auto-copied from https://github.com/facebook/css-layout
// @generated SignedSource<<fcf3439e46c4c76e42357c348a9ffe99>>
// @generated SignedSource<<3177826257fea8b5ac1fc9d1d514935a>>
package com.facebook.csslayout;
import javax.annotation.Nullable;
import java.util.Arrays;
/**
* Class representing CSS spacing (padding, margin, and borders). This is mostly necessary to
* properly implement interactions and updates for properties like margin, marginLeft, and
@ -164,6 +166,17 @@ public class Spacing {
return mSpacing[spacingType];
}
/**
* Resets the spacing instance to its default state. This method is meant to be used when
* recycling {@link Spacing} instances.
*/
void reset() {
Arrays.fill(mSpacing, CSSConstants.UNDEFINED);
mDefaultSpacing = null;
mHasAliasesSet = false;
mValueFlags = 0;
}
/**
* Try to get start value and fallback to given type if not defined. This is used privately
* by the layout engine as a more efficient way to fetch direction-aware values by