134 lines
4.4 KiB
Java
134 lines
4.4 KiB
Java
package androidx.recyclerview.widget;
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import android.view.View;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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public class ViewBoundsCheck {
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public static final int CVE_PVE_POS = 12;
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public static final int CVE_PVS_POS = 8;
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public static final int CVS_PVE_POS = 4;
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public static final int CVS_PVS_POS = 0;
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public static final int EQ = 2;
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public static final int FLAG_CVE_EQ_PVE = 8192;
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public static final int FLAG_CVE_EQ_PVS = 512;
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public static final int FLAG_CVE_GT_PVE = 4096;
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public static final int FLAG_CVE_GT_PVS = 256;
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public static final int FLAG_CVE_LT_PVE = 16384;
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public static final int FLAG_CVE_LT_PVS = 1024;
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public static final int FLAG_CVS_EQ_PVE = 32;
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public static final int FLAG_CVS_EQ_PVS = 2;
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public static final int FLAG_CVS_GT_PVE = 16;
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public static final int FLAG_CVS_GT_PVS = 1;
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public static final int FLAG_CVS_LT_PVE = 64;
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public static final int FLAG_CVS_LT_PVS = 4;
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public static final int GT = 1;
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public static final int LT = 4;
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public static final int MASK = 7;
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public BoundFlags mBoundFlags = new BoundFlags();
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public final Callback mCallback;
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public static class BoundFlags {
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public int mBoundFlags = 0;
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public int mChildEnd;
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public int mChildStart;
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public int mRvEnd;
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public int mRvStart;
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public void addFlags(int i) {
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this.mBoundFlags = i | this.mBoundFlags;
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}
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public boolean boundsMatch() {
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int i = this.mBoundFlags;
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if ((i & 7) != 0 && (i & (compare(this.mChildStart, this.mRvStart) << 0)) == 0) {
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return false;
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}
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int i2 = this.mBoundFlags;
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if ((i2 & 112) != 0 && (i2 & (compare(this.mChildStart, this.mRvEnd) << 4)) == 0) {
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return false;
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}
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int i3 = this.mBoundFlags;
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if ((i3 & 1792) != 0 && (i3 & (compare(this.mChildEnd, this.mRvStart) << 8)) == 0) {
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return false;
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}
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int i4 = this.mBoundFlags;
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return (i4 & 28672) == 0 || (i4 & (compare(this.mChildEnd, this.mRvEnd) << 12)) != 0;
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}
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public int compare(int i, int i2) {
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if (i > i2) {
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return 1;
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}
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return i == i2 ? 2 : 4;
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}
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public void resetFlags() {
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this.mBoundFlags = 0;
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}
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public void setBounds(int i, int i2, int i3, int i4) {
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this.mRvStart = i;
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this.mRvEnd = i2;
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this.mChildStart = i3;
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this.mChildEnd = i4;
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}
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}
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public interface Callback {
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View getChildAt(int i);
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int getChildEnd(View view);
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int getChildStart(View view);
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int getParentEnd();
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int getParentStart();
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}
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@Retention(RetentionPolicy.SOURCE)
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public @interface ViewBounds {
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}
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public ViewBoundsCheck(Callback callback) {
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this.mCallback = callback;
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}
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public View findOneViewWithinBoundFlags(int i, int i2, int i3, int i4) {
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int parentStart = this.mCallback.getParentStart();
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int parentEnd = this.mCallback.getParentEnd();
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int i5 = i2 > i ? 1 : -1;
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View view = null;
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while (i != i2) {
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View childAt = this.mCallback.getChildAt(i);
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this.mBoundFlags.setBounds(parentStart, parentEnd, this.mCallback.getChildStart(childAt), this.mCallback.getChildEnd(childAt));
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if (i3 != 0) {
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this.mBoundFlags.resetFlags();
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this.mBoundFlags.addFlags(i3);
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if (this.mBoundFlags.boundsMatch()) {
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return childAt;
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}
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}
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if (i4 != 0) {
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this.mBoundFlags.resetFlags();
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this.mBoundFlags.addFlags(i4);
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if (this.mBoundFlags.boundsMatch()) {
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view = childAt;
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}
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}
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i += i5;
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}
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return view;
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}
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public boolean isViewWithinBoundFlags(View view, int i) {
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this.mBoundFlags.setBounds(this.mCallback.getParentStart(), this.mCallback.getParentEnd(), this.mCallback.getChildStart(view), this.mCallback.getChildEnd(view));
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if (i == 0) {
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return false;
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}
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this.mBoundFlags.resetFlags();
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this.mBoundFlags.addFlags(i);
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return this.mBoundFlags.boundsMatch();
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}
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}
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