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Added implementation for YogaNodeJNIBatching and logic for passing array from c++ to java

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Summary: This diff adds the logic to transfer layout outputs using a float array

Reviewed By: davidaurelio

Differential Revision: D14368120

fbshipit-source-id: d1f22283bcea051d15657f42c15b90edaa0a8a7a
This commit is contained in:
Sidharth Guglani
2019-04-01 06:11:51 -07:00
committed by Facebook Github Bot
parent 5fad8008ab
commit c11faf2d56
2 changed files with 320 additions and 66 deletions
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177
java/com/facebook/yoga/YogaNodeJNIBatching.java Normal file
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the LICENSE
* file in the root directory of this source tree.
*/
package com.facebook.yoga;
import javax.annotation.Nullable;
import com.facebook.proguard.annotations.DoNotStrip;
@DoNotStrip
public class YogaNodeJNIBatching extends YogaNodeJNIBase {
/* Those flags needs be in sync with YGJNI.cpp */
private static final byte MARGIN = 1;
private static final byte PADDING = 2;
private static final byte BORDER = 4;
private static final byte DOES_LEGACY_STRETCH_BEHAVIOUR = 8;
private static final byte HAS_NEW_LAYOUT = 16;
private static final byte LAYOUT_EDGE_SET_FLAG_INDEX = 0;
private static final byte LAYOUT_WIDTH_INDEX = 1;
private static final byte LAYOUT_HEIGHT_INDEX = 2;
private static final byte LAYOUT_LEFT_INDEX = 3;
private static final byte LAYOUT_TOP_INDEX = 4;
private static final byte LAYOUT_DIRECTION_INDEX = 5;
private static final byte LAYOUT_MARGIN_START_INDEX = 6;
private static final byte LAYOUT_PADDING_START_INDEX = 10;
private static final byte LAYOUT_BORDER_START_INDEX = 14;
@DoNotStrip
private @Nullable float[] arr = null;
@DoNotStrip
private int mLayoutDirection = 0;
private boolean mHasNewLayout = true;
public YogaNodeJNIBatching() {
super();
}
public YogaNodeJNIBatching(YogaConfig config) {
super(config);
}
@Override
public void reset() {
super.reset();
arr = null;
mHasNewLayout = true;
mLayoutDirection = 0;
}
@Override
public float getLayoutX() {
return arr != null ? arr[LAYOUT_LEFT_INDEX] : 0;
}
@Override
public float getLayoutY() {
return arr != null ? arr[LAYOUT_TOP_INDEX] : 0;
}
@Override
public float getLayoutWidth() {
return arr != null ? arr[LAYOUT_WIDTH_INDEX] : 0;
}
@Override
public float getLayoutHeight() {
return arr != null ? arr[LAYOUT_HEIGHT_INDEX] : 0;
}
@Override
public boolean getDoesLegacyStretchFlagAffectsLayout() {
return arr != null && (((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & DOES_LEGACY_STRETCH_BEHAVIOUR) == DOES_LEGACY_STRETCH_BEHAVIOUR);
}
@Override
public float getLayoutMargin(YogaEdge edge) {
if (arr != null && ((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & MARGIN) == MARGIN) {
switch (edge) {
case LEFT:
return arr[LAYOUT_MARGIN_START_INDEX];
case TOP:
return arr[LAYOUT_MARGIN_START_INDEX + 1];
case RIGHT:
return arr[LAYOUT_MARGIN_START_INDEX + 2];
case BOTTOM:
return arr[LAYOUT_MARGIN_START_INDEX + 3];
case START:
return getLayoutDirection() == YogaDirection.RTL ? arr[LAYOUT_MARGIN_START_INDEX + 2] : arr[LAYOUT_MARGIN_START_INDEX];
case END:
return getLayoutDirection() == YogaDirection.RTL ? arr[LAYOUT_MARGIN_START_INDEX] : arr[LAYOUT_MARGIN_START_INDEX + 2];
default:
throw new IllegalArgumentException("Cannot get layout margins of multi-edge shorthands");
}
} else {
return 0;
}
}
@Override
public float getLayoutPadding(YogaEdge edge) {
if (arr != null && ((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & PADDING) == PADDING) {
int paddingStartIndex = LAYOUT_PADDING_START_INDEX - ((((int)arr[LAYOUT_EDGE_SET_FLAG_INDEX] & MARGIN) == MARGIN) ? 0 : 4);
switch (edge) {
case LEFT:
return arr[paddingStartIndex];
case TOP:
return arr[paddingStartIndex + 1];
case RIGHT:
return arr[paddingStartIndex + 2];
case BOTTOM:
return arr[paddingStartIndex + 3];
case START:
return getLayoutDirection() == YogaDirection.RTL ? arr[paddingStartIndex + 2] : arr[paddingStartIndex];
case END:
return getLayoutDirection() == YogaDirection.RTL ? arr[paddingStartIndex] : arr[paddingStartIndex + 2];
default:
throw new IllegalArgumentException("Cannot get layout paddings of multi-edge shorthands");
}
} else {
return 0;
}
}
@Override
public float getLayoutBorder(YogaEdge edge) {
if (arr != null && ((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & BORDER) == BORDER) {
int borderStartIndex = LAYOUT_BORDER_START_INDEX - ((((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & MARGIN) == MARGIN) ? 0 : 4) - ((((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX] & PADDING) == PADDING) ? 0 : 4);
switch (edge) {
case LEFT:
return arr[borderStartIndex];
case TOP:
return arr[borderStartIndex + 1];
case RIGHT:
return arr[borderStartIndex + 2];
case BOTTOM:
return arr[borderStartIndex + 3];
case START:
return getLayoutDirection() == YogaDirection.RTL ? arr[borderStartIndex + 2] : arr[borderStartIndex];
case END:
return getLayoutDirection() == YogaDirection.RTL ? arr[borderStartIndex] : arr[borderStartIndex + 2];
default:
throw new IllegalArgumentException("Cannot get layout border of multi-edge shorthands");
}
} else {
return 0;
}
}
@Override
public YogaDirection getLayoutDirection() {
return YogaDirection.fromInt(arr != null ? (int) arr[LAYOUT_DIRECTION_INDEX] : mLayoutDirection);
}
@Override
public boolean hasNewLayout() {
if (arr != null) {
return (((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX]) & HAS_NEW_LAYOUT) == HAS_NEW_LAYOUT;
} else {
return mHasNewLayout;
}
}
@Override
public void markLayoutSeen() {
if (arr != null) {
arr[LAYOUT_EDGE_SET_FLAG_INDEX] = ((int) arr[LAYOUT_EDGE_SET_FLAG_INDEX]) & ~(HAS_NEW_LAYOUT);
}
mHasNewLayout = false;
}
}