/**
* Copyright (c) 2014-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.
*/
package com.facebook.yoga;
import javax.annotation.Nullable;
import java.util.List;
import java.util.ArrayList;
import com.facebook.proguard.annotations.DoNotStrip;
import com.facebook.soloader.SoLoader;
@DoNotStrip
public class YogaNode implements YogaNodeAPI<YogaNode> {
static {
SoLoader.loadLibrary("yoga");
}
/**
* Get native instance count. Useful for testing only.
*/
static native int jni_YGNodeGetInstanceCount();
static native void jni_YGLog(int level, String message);
private static native void jni_YGSetLogger(Object logger);
public static void setLogger(YogaLogger logger) {
jni_YGSetLogger(logger);
}
private YogaNode mParent;
private List<YogaNode> mChildren;
private YogaMeasureFunction mMeasureFunction;
private YogaBaselineFunction mBaselineFunction;
private long mNativePointer;
private Object mData;
/* Those flags needs be in sync with YGJNI.cpp */
private final static int MARGIN = 1;
private final static int PADDING = 2;
private final static int BORDER = 4;
@DoNotStrip
private int mEdgeSetFlag = 0;
private boolean mHasSetPosition = false;
@DoNotStrip
private float mWidth = YogaConstants.UNDEFINED;
@DoNotStrip
private float mHeight = YogaConstants.UNDEFINED;
@DoNotStrip
private float mTop = YogaConstants.UNDEFINED;
@DoNotStrip
private float mLeft = YogaConstants.UNDEFINED;
@DoNotStrip
private float mMarginLeft = 0;
@DoNotStrip
private float mMarginTop = 0;
@DoNotStrip
private float mMarginRight = 0;
@DoNotStrip
private float mMarginBottom = 0;
@DoNotStrip
private float mPaddingLeft = 0;
@DoNotStrip
private float mPaddingTop = 0;
@DoNotStrip
private float mPaddingRight = 0;
@DoNotStrip
private float mPaddingBottom = 0;
@DoNotStrip
private float mBorderLeft = 0;
@DoNotStrip
private float mBorderTop = 0;
@DoNotStrip
private float mBorderRight = 0;
@DoNotStrip
private float mBorderBottom = 0;
@DoNotStrip
private int mLayoutDirection = 0;
@DoNotStrip
private boolean mHasNewLayout = true;
private native long jni_YGNodeNew();
public YogaNode() {
mNativePointer = jni_YGNodeNew();
if (mNativePointer == 0) {
throw new IllegalStateException("Failed to allocate native memory");
}
}
private native long jni_YGNodeNewWithConfig(long configPointer);
public YogaNode(YogaConfig config) {
mNativePointer = jni_YGNodeNewWithConfig(config.mNativePointer);
if (mNativePointer == 0) {
throw new IllegalStateException("Failed to allocate native memory");
}
}
private native void jni_YGNodeFree(long nativePointer);
@Override
protected void finalize() throws Throwable {
try {
jni_YGNodeFree(mNativePointer);
} finally {
super.finalize();
}
}
private native void jni_YGNodeReset(long nativePointer);
@Override
public void reset() {
mEdgeSetFlag = 0;
mHasSetPosition = false;
mHasNewLayout = true;
mWidth = YogaConstants.UNDEFINED;
mHeight = YogaConstants.UNDEFINED;
mTop = YogaConstants.UNDEFINED;
mLeft = YogaConstants.UNDEFINED;
mMarginLeft = 0;
mMarginTop = 0;
mMarginRight = 0;
mMarginBottom = 0;
mPaddingLeft = 0;
mPaddingTop = 0;
mPaddingRight = 0;
mPaddingBottom = 0;
mBorderLeft = 0;
mBorderTop = 0;
mBorderRight = 0;
mBorderBottom = 0;
mLayoutDirection = 0;
mMeasureFunction = null;
mData = null;
jni_YGNodeReset(mNativePointer);
}
@Override
public int getChildCount() {
return mChildren == null ? 0 : mChildren.size();
}
@Override
public YogaNode getChildAt(int i) {
return mChildren.get(i);
}
private native void jni_YGNodeInsertChild(long nativePointer, long childPointer, int index);
@Override
public void addChildAt(YogaNode child, int i) {
if (child.mParent != null) {
throw new IllegalStateException("Child already has a parent, it must be removed first.");
}
if (mChildren == null) {
mChildren = new ArrayList<>(4);
}
mChildren.add(i, child);
child.mParent = this;
jni_YGNodeInsertChild(mNativePointer, child.mNativePointer, i);
}
private native void jni_YGNodeRemoveChild(long nativePointer, long childPointer);
@Override
public YogaNode removeChildAt(int i) {
final YogaNode child = mChildren.remove(i);
child.mParent = null;
jni_YGNodeRemoveChild(mNativePointer, child.mNativePointer);
return child;
}
@Override
public @Nullable
YogaNode getParent() {
return mParent;
}
@Override
public int indexOf(YogaNode child) {
return mChildren == null ? -1 : mChildren.indexOf(child);
}
private native void jni_YGNodeCalculateLayout(long nativePointer, float width, float height);
@Override
public void calculateLayout(float width, float height) {
jni_YGNodeCalculateLayout(mNativePointer, width, height);
}
@Override
public boolean hasNewLayout() {
return mHasNewLayout;
}
private native void jni_YGNodeMarkDirty(long nativePointer);
@Override
public void dirty() {
jni_YGNodeMarkDirty(mNativePointer);
}
private native boolean jni_YGNodeIsDirty(long nativePointer);
@Override
public boolean isDirty() {
return jni_YGNodeIsDirty(mNativePointer);
}
private native void jni_YGNodeCopyStyle(long dstNativePointer, long srcNativePointer);
@Override
public void copyStyle(YogaNode srcNode) {
jni_YGNodeCopyStyle(mNativePointer, srcNode.mNativePointer);
}
@Override
public void markLayoutSeen() {
mHasNewLayout = false;
}
private native int jni_YGNodeStyleGetDirection(long nativePointer);
@Override
public YogaDirection getStyleDirection() {
return YogaDirection.fromInt(jni_YGNodeStyleGetDirection(mNativePointer));
}
private native void jni_YGNodeStyleSetDirection(long nativePointer, int direction);
@Override
public void setDirection(YogaDirection direction) {
jni_YGNodeStyleSetDirection(mNativePointer, direction.intValue());
}
private native int jni_YGNodeStyleGetFlexDirection(long nativePointer);
@Override
public YogaFlexDirection getFlexDirection() {
return YogaFlexDirection.fromInt(jni_YGNodeStyleGetFlexDirection(mNativePointer));
}
private native void jni_YGNodeStyleSetFlexDirection(long nativePointer, int flexDirection);
@Override
public void setFlexDirection(YogaFlexDirection flexDirection) {
jni_YGNodeStyleSetFlexDirection(mNativePointer, flexDirection.intValue());
}
private native int jni_YGNodeStyleGetJustifyContent(long nativePointer);
@Override
public YogaJustify getJustifyContent() {
return YogaJustify.fromInt(jni_YGNodeStyleGetJustifyContent(mNativePointer));
}
private native void jni_YGNodeStyleSetJustifyContent(long nativePointer, int justifyContent);
@Override
public void setJustifyContent(YogaJustify justifyContent) {
jni_YGNodeStyleSetJustifyContent(mNativePointer, justifyContent.intValue());
}
private native int jni_YGNodeStyleGetAlignItems(long nativePointer);
@Override
public YogaAlign getAlignItems() {
return YogaAlign.fromInt(jni_YGNodeStyleGetAlignItems(mNativePointer));
}
private native void jni_YGNodeStyleSetAlignItems(long nativePointer, int alignItems);
@Override
public void setAlignItems(YogaAlign alignItems) {
jni_YGNodeStyleSetAlignItems(mNativePointer, alignItems.intValue());
}
private native int jni_YGNodeStyleGetAlignSelf(long nativePointer);
@Override
public YogaAlign getAlignSelf() {
return YogaAlign.fromInt(jni_YGNodeStyleGetAlignSelf(mNativePointer));
}
private native void jni_YGNodeStyleSetAlignSelf(long nativePointer, int alignSelf);
@Override
public void setAlignSelf(YogaAlign alignSelf) {
jni_YGNodeStyleSetAlignSelf(mNativePointer, alignSelf.intValue());
}
private native int jni_YGNodeStyleGetAlignContent(long nativePointer);
@Override
public YogaAlign getAlignContent() {
return YogaAlign.fromInt(jni_YGNodeStyleGetAlignContent(mNativePointer));
}
private native void jni_YGNodeStyleSetAlignContent(long nativePointer, int alignContent);
@Override
public void setAlignContent(YogaAlign alignContent) {
jni_YGNodeStyleSetAlignContent(mNativePointer, alignContent.intValue());
}
private native int jni_YGNodeStyleGetPositionType(long nativePointer);
@Override
public YogaPositionType getPositionType() {
return YogaPositionType.fromInt(jni_YGNodeStyleGetPositionType(mNativePointer));
}
private native void jni_YGNodeStyleSetPositionType(long nativePointer, int positionType);
@Override
public void setPositionType(YogaPositionType positionType) {
jni_YGNodeStyleSetPositionType(mNativePointer, positionType.intValue());
}
private native void jni_YGNodeStyleSetFlexWrap(long nativePointer, int wrapType);
@Override
public void setWrap(YogaWrap flexWrap) {
jni_YGNodeStyleSetFlexWrap(mNativePointer, flexWrap.intValue());
}
private native int jni_YGNodeStyleGetOverflow(long nativePointer);
@Override
public YogaOverflow getOverflow() {
return YogaOverflow.fromInt(jni_YGNodeStyleGetOverflow(mNativePointer));
}
private native void jni_YGNodeStyleSetOverflow(long nativePointer, int overflow);
@Override
public void setOverflow(YogaOverflow overflow) {
jni_YGNodeStyleSetOverflow(mNativePointer, overflow.intValue());
}
private native int jni_YGNodeStyleGetDisplay(long nativePointer);
@Override
public YogaDisplay getDisplay() {
return YogaDisplay.fromInt(jni_YGNodeStyleGetDisplay(mNativePointer));
}
private native void jni_YGNodeStyleSetDisplay(long nativePointer, int display);
@Override
public void setDisplay(YogaDisplay display) {
jni_YGNodeStyleSetDisplay(mNativePointer, display.intValue());
}
private native void jni_YGNodeStyleSetFlex(long nativePointer, float flex);
@Override
public void setFlex(float flex) {
jni_YGNodeStyleSetFlex(mNativePointer, flex);
}
private native float jni_YGNodeStyleGetFlexGrow(long nativePointer);
@Override
public float getFlexGrow() {
return jni_YGNodeStyleGetFlexGrow(mNativePointer);
}
private native void jni_YGNodeStyleSetFlexGrow(long nativePointer, float flexGrow);
@Override
public void setFlexGrow(float flexGrow) {
jni_YGNodeStyleSetFlexGrow(mNativePointer, flexGrow);
}
private native float jni_YGNodeStyleGetFlexShrink(long nativePointer);
@Override
public float getFlexShrink() {
return jni_YGNodeStyleGetFlexShrink(mNativePointer);
}
private native void jni_YGNodeStyleSetFlexShrink(long nativePointer, float flexShrink);
@Override
public void setFlexShrink(float flexShrink) {
jni_YGNodeStyleSetFlexShrink(mNativePointer, flexShrink);
}
private native Object jni_YGNodeStyleGetFlexBasis(long nativePointer);
@Override
public YogaValue getFlexBasis() {
return (YogaValue) jni_YGNodeStyleGetFlexBasis(mNativePointer);
}
private native void jni_YGNodeStyleSetFlexBasis(long nativePointer, float flexBasis);
@Override
public void setFlexBasis(float flexBasis) {
jni_YGNodeStyleSetFlexBasis(mNativePointer, flexBasis);
}
private native void jni_YGNodeStyleSetFlexBasisPercent(long nativePointer, float percent);
@Override
public void setFlexBasisPercent(float percent) {
jni_YGNodeStyleSetFlexBasisPercent(mNativePointer, percent);
}
private native void jni_YGNodeStyleSetFlexBasisAuto(long nativePointer);
@Override
public void setFlexBasisAuto() {
jni_YGNodeStyleSetFlexBasisAuto(mNativePointer);
}
private native Object jni_YGNodeStyleGetMargin(long nativePointer, int edge);
@Override
public YogaValue getMargin(YogaEdge edge) {
if (!((mEdgeSetFlag & MARGIN) == MARGIN)) {
return YogaValue.UNDEFINED;
}
return (YogaValue) jni_YGNodeStyleGetMargin(mNativePointer, edge.intValue());
}
private native void jni_YGNodeStyleSetMargin(long nativePointer, int edge, float margin);
@Override
public void setMargin(YogaEdge edge, float margin) {
mEdgeSetFlag |= MARGIN;
jni_YGNodeStyleSetMargin(mNativePointer, edge.intValue(), margin);
}
private native void jni_YGNodeStyleSetMarginPercent(long nativePointer, int edge, float percent);
@Override
public void setMarginPercent(YogaEdge edge, float percent) {
mEdgeSetFlag |= MARGIN;
jni_YGNodeStyleSetMarginPercent(mNativePointer, edge.intValue(), percent);
}
private native void jni_YGNodeStyleSetMarginAuto(long nativePointer, int edge);
@Override
public void setMarginAuto(YogaEdge edge) {
mEdgeSetFlag |= MARGIN;
jni_YGNodeStyleSetMarginAuto(mNativePointer, edge.intValue());
}
private native Object jni_YGNodeStyleGetPadding(long nativePointer, int edge);
@Override
public YogaValue getPadding(YogaEdge edge) {
if (!((mEdgeSetFlag & PADDING) == PADDING)) {
return YogaValue.UNDEFINED;
}
return (YogaValue) jni_YGNodeStyleGetPadding(mNativePointer, edge.intValue());
}
private native void jni_YGNodeStyleSetPadding(long nativePointer, int edge, float padding);
@Override
public void setPadding(YogaEdge edge, float padding) {
mEdgeSetFlag |= PADDING;
jni_YGNodeStyleSetPadding(mNativePointer, edge.intValue(), padding);
}
private native void jni_YGNodeStyleSetPaddingPercent(long nativePointer, int edge, float percent);
@Override
public void setPaddingPercent(YogaEdge edge, float percent) {
mEdgeSetFlag |= PADDING;
jni_YGNodeStyleSetPaddingPercent(mNativePointer, edge.intValue(), percent);
}
private native float jni_YGNodeStyleGetBorder(long nativePointer, int edge);
@Override
public float getBorder(YogaEdge edge) {
if (!((mEdgeSetFlag & BORDER) == BORDER)) {
return YogaConstants.UNDEFINED;
}
return jni_YGNodeStyleGetBorder(mNativePointer, edge.intValue());
}
private native void jni_YGNodeStyleSetBorder(long nativePointer, int edge, float border);
@Override
public void setBorder(YogaEdge edge, float border) {
mEdgeSetFlag |= BORDER;
jni_YGNodeStyleSetBorder(mNativePointer, edge.intValue(), border);
}
private native Object jni_YGNodeStyleGetPosition(long nativePointer, int edge);
@Override
public YogaValue getPosition(YogaEdge edge) {
if (!mHasSetPosition) {
return YogaValue.UNDEFINED;
}
return (YogaValue) jni_YGNodeStyleGetPosition(mNativePointer, edge.intValue());
}
private native void jni_YGNodeStyleSetPosition(long nativePointer, int edge, float position);
@Override
public void setPosition(YogaEdge edge, float position) {
mHasSetPosition = true;
jni_YGNodeStyleSetPosition(mNativePointer, edge.intValue(), position);
}
private native void jni_YGNodeStyleSetPositionPercent(long nativePointer, int edge, float percent);
@Override
public void setPositionPercent(YogaEdge edge, float percent) {
mHasSetPosition = true;
jni_YGNodeStyleSetPositionPercent(mNativePointer, edge.intValue(), percent);
}
private native Object jni_YGNodeStyleGetWidth(long nativePointer);
@Override
public YogaValue getWidth() {
return (YogaValue) jni_YGNodeStyleGetWidth(mNativePointer);
}
private native void jni_YGNodeStyleSetWidth(long nativePointer, float width);
@Override
public void setWidth(float width) {
jni_YGNodeStyleSetWidth(mNativePointer, width);
}
private native void jni_YGNodeStyleSetWidthPercent(long nativePointer, float percent);
@Override
public void setWidthPercent(float percent) {
jni_YGNodeStyleSetWidthPercent(mNativePointer, percent);
}
private native void jni_YGNodeStyleSetWidthAuto(long nativePointer);
@Override
public void setWidthAuto() {
jni_YGNodeStyleSetWidthAuto(mNativePointer);
}
private native Object jni_YGNodeStyleGetHeight(long nativePointer);
@Override
public YogaValue getHeight() {
return (YogaValue) jni_YGNodeStyleGetHeight(mNativePointer);
}
private native void jni_YGNodeStyleSetHeight(long nativePointer, float height);
@Override
public void setHeight(float height) {
jni_YGNodeStyleSetHeight(mNativePointer, height);
}
private native void jni_YGNodeStyleSetHeightPercent(long nativePointer, float percent);
@Override
public void setHeightPercent(float percent) {
jni_YGNodeStyleSetHeightPercent(mNativePointer, percent);
}
private native void jni_YGNodeStyleSetHeightAuto(long nativePointer);
@Override
public void setHeightAuto() {
jni_YGNodeStyleSetHeightAuto(mNativePointer);
}
private native Object jni_YGNodeStyleGetMinWidth(long nativePointer);
@Override
public YogaValue getMinWidth() {
return (YogaValue) jni_YGNodeStyleGetMinWidth(mNativePointer);
}
private native void jni_YGNodeStyleSetMinWidth(long nativePointer, float minWidth);
@Override
public void setMinWidth(float minWidth) {
jni_YGNodeStyleSetMinWidth(mNativePointer, minWidth);
}
private native void jni_YGNodeStyleSetMinWidthPercent(long nativePointer, float percent);
@Override
public void setMinWidthPercent(float percent) {
jni_YGNodeStyleSetMinWidthPercent(mNativePointer, percent);
}
private native Object jni_YGNodeStyleGetMinHeight(long nativePointer);
@Override
public YogaValue getMinHeight() {
return (YogaValue) jni_YGNodeStyleGetMinHeight(mNativePointer);
}
private native void jni_YGNodeStyleSetMinHeight(long nativePointer, float minHeight);
@Override
public void setMinHeight(float minHeight) {
jni_YGNodeStyleSetMinHeight(mNativePointer, minHeight);
}
private native void jni_YGNodeStyleSetMinHeightPercent(long nativePointer, float percent);
@Override
public void setMinHeightPercent(float percent) {
jni_YGNodeStyleSetMinHeightPercent(mNativePointer, percent);
}
private native Object jni_YGNodeStyleGetMaxWidth(long nativePointer);
@Override
public YogaValue getMaxWidth() {
return (YogaValue) jni_YGNodeStyleGetMaxWidth(mNativePointer);
}
private native void jni_YGNodeStyleSetMaxWidth(long nativePointer, float maxWidth);
@Override
public void setMaxWidth(float maxWidth) {
jni_YGNodeStyleSetMaxWidth(mNativePointer, maxWidth);
}
private native void jni_YGNodeStyleSetMaxWidthPercent(long nativePointer, float percent);
@Override
public void setMaxWidthPercent(float percent) {
jni_YGNodeStyleSetMaxWidthPercent(mNativePointer, percent);
}
private native Object jni_YGNodeStyleGetMaxHeight(long nativePointer);
@Override
public YogaValue getMaxHeight() {
return (YogaValue) jni_YGNodeStyleGetMaxHeight(mNativePointer);
}
private native void jni_YGNodeStyleSetMaxHeight(long nativePointer, float maxheight);
@Override
public void setMaxHeight(float maxheight) {
jni_YGNodeStyleSetMaxHeight(mNativePointer, maxheight);
}
private native void jni_YGNodeStyleSetMaxHeightPercent(long nativePointer, float percent);
@Override
public void setMaxHeightPercent(float percent) {
jni_YGNodeStyleSetMaxHeightPercent(mNativePointer, percent);
}
private native float jni_YGNodeStyleGetAspectRatio(long nativePointer);
public float getAspectRatio() {
return jni_YGNodeStyleGetAspectRatio(mNativePointer);
}
private native void jni_YGNodeStyleSetAspectRatio(long nativePointer, float aspectRatio);
public void setAspectRatio(float aspectRatio) {
jni_YGNodeStyleSetAspectRatio(mNativePointer, aspectRatio);
}
@Override
public float getLayoutX() {
return mLeft;
}
@Override
public float getLayoutY() {
return mTop;
}
@Override
public float getLayoutWidth() {
return mWidth;
}
@Override
public float getLayoutHeight() {
return mHeight;
}
@Override
public float getLayoutMargin(YogaEdge edge) {
switch (edge) {
case LEFT:
return mMarginLeft;
case TOP:
return mMarginTop;
case RIGHT:
return mMarginRight;
case BOTTOM:
return mMarginBottom;
case START:
return getLayoutDirection() == YogaDirection.RTL ? mMarginRight : mMarginLeft;
case END:
return getLayoutDirection() == YogaDirection.RTL ? mMarginLeft : mMarginRight;
default:
throw new IllegalArgumentException("Cannot get layout margins of multi-edge shorthands");
}
}
@Override
public float getLayoutPadding(YogaEdge edge) {
switch (edge) {
case LEFT:
return mPaddingLeft;
case TOP:
return mPaddingTop;
case RIGHT:
return mPaddingRight;
case BOTTOM:
return mPaddingBottom;
case START:
return getLayoutDirection() == YogaDirection.RTL ? mPaddingRight : mPaddingLeft;
case END:
return getLayoutDirection() == YogaDirection.RTL ? mPaddingLeft : mPaddingRight;
default:
throw new IllegalArgumentException("Cannot get layout paddings of multi-edge shorthands");
}
}
@Override
public float getLayoutBorder(YogaEdge edge) {
switch (edge) {
case LEFT:
return mBorderLeft;
case TOP:
return mBorderTop;
case RIGHT:
return mBorderRight;
case BOTTOM:
return mBorderBottom;
case START:
return getLayoutDirection() == YogaDirection.RTL ? mBorderRight : mBorderLeft;
case END:
return getLayoutDirection() == YogaDirection.RTL ? mBorderLeft : mBorderRight;
default:
throw new IllegalArgumentException("Cannot get layout border of multi-edge shorthands");
}
}
@Override
public YogaDirection getLayoutDirection() {
return YogaDirection.fromInt(mLayoutDirection);
}
private native void jni_YGNodeSetHasMeasureFunc(long nativePointer, boolean hasMeasureFunc);
@Override
public void setMeasureFunction(YogaMeasureFunction measureFunction) {
mMeasureFunction = measureFunction;
jni_YGNodeSetHasMeasureFunc(mNativePointer, measureFunction != null);
}
// Implementation Note: Why this method needs to stay final
//
// We cache the jmethodid for this method in Yoga code. This means that even if a subclass
// were to override measure, we'd still call this implementation from layout code since the
// overriding method will have a different jmethodid. This is final to prevent that mistake.
@DoNotStrip
public final long measure(float width, int widthMode, float height, int heightMode) {
if (!isMeasureDefined()) {
throw new RuntimeException("Measure function isn't defined!");
}
return mMeasureFunction.measure(
this,
width,
YogaMeasureMode.fromInt(widthMode),
height,
YogaMeasureMode.fromInt(heightMode));
}
private native void jni_YGNodeSetHasBaselineFunc(long nativePointer, boolean hasMeasureFunc);
@Override
public void setBaselineFunction(YogaBaselineFunction baselineFunction) {
mBaselineFunction = baselineFunction;
jni_YGNodeSetHasBaselineFunc(mNativePointer, baselineFunction != null);
}
@DoNotStrip
public final float baseline(float width, float height) {
return mBaselineFunction.baseline(this, width, height);
}
@Override
public boolean isMeasureDefined() {
return mMeasureFunction != null;
}
@Override
public void setData(Object data) {
mData = data;
}
@Override
public Object getData() {
return mData;
}
}