58 lines
2.2 KiB
Java
58 lines
2.2 KiB
Java
package androidx.transition;
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import android.graphics.Rect;
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import android.view.ViewGroup;
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public class CircularPropagation extends VisibilityPropagation {
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private float mPropagationSpeed = 3.0f;
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private static float distance(float f, float f2, float f3, float f4) {
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float f5 = f3 - f;
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float f6 = f4 - f2;
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return (float) Math.sqrt((double) ((f6 * f6) + (f5 * f5)));
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}
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@Override // androidx.transition.TransitionPropagation
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public long getStartDelay(ViewGroup viewGroup, Transition transition, TransitionValues transitionValues, TransitionValues transitionValues2) {
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int i;
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int i2;
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int i3;
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if (transitionValues == null && transitionValues2 == null) {
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return 0;
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}
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if (transitionValues2 == null || getViewVisibility(transitionValues) == 0) {
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i = -1;
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} else {
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transitionValues = transitionValues2;
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i = 1;
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}
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int viewX = getViewX(transitionValues);
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int viewY = getViewY(transitionValues);
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Rect epicenter = transition.getEpicenter();
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if (epicenter != null) {
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i3 = epicenter.centerX();
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i2 = epicenter.centerY();
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} else {
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int[] iArr = new int[2];
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viewGroup.getLocationOnScreen(iArr);
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int round = Math.round(viewGroup.getTranslationX() + ((float) ((viewGroup.getWidth() / 2) + iArr[0])));
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int i4 = iArr[1];
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i2 = Math.round(viewGroup.getTranslationY() + ((float) ((viewGroup.getHeight() / 2) + i4)));
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i3 = round;
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}
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float distance = distance((float) viewX, (float) viewY, (float) i3, (float) i2) / distance(0.0f, 0.0f, (float) viewGroup.getWidth(), (float) viewGroup.getHeight());
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long duration = transition.getDuration();
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if (duration < 0) {
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duration = 300;
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}
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return (long) Math.round((((float) (duration * ((long) i))) / this.mPropagationSpeed) * distance);
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}
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public void setPropagationSpeed(float f) {
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if (f != 0.0f) {
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this.mPropagationSpeed = f;
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return;
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}
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throw new IllegalArgumentException("propagationSpeed may not be 0");
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}
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}
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