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Fix fab animation

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NekoInverter committed 2020-03-30 11:43:31 +08:00
1 parent 1a2b3de154
commit 125e307a05
1 file changed
+15 -76
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app/src/main/java/com/hippo/ehviewer/widget/EhDrawerLayout.java
+15 -76
View File
@@ -16,7 +16,6 @@
package com.hippo.ehviewer.widget;
import android.animation.ValueAnimator;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
@@ -24,11 +23,11 @@ import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.view.ViewCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import com.google.android.material.snackbar.Snackbar;
import com.hippo.ehviewer.R;
import com.hippo.yorozuya.AnimationUtils;
import com.hippo.yorozuya.LayoutUtils;
import java.util.ArrayList;
import java.util.List;
@@ -81,90 +80,30 @@ public class EhDrawerLayout extends DrawerLayout implements CoordinatorLayout.At
public static class Behavior extends CoordinatorLayout.Behavior<EhDrawerLayout> {
@Override
public boolean layoutDependsOn(CoordinatorLayout parent,
EhDrawerLayout child, View dependency) {
// We're dependent on all SnackbarLayouts (if enabled)
public boolean layoutDependsOn(CoordinatorLayout parent, EhDrawerLayout child, View dependency) {
return dependency instanceof Snackbar.SnackbarLayout;
}
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, EhDrawerLayout child,
View dependency) {
if (dependency instanceof Snackbar.SnackbarLayout) {
for (int i = 0, n = child.getAboveSnackViewCount(); i < n; i++) {
View view = child.getAboveSnackViewAt(i);
if (view != null) {
updateChildTranslationForSnackbar(parent, child, view);
}
public boolean onDependentViewChanged(CoordinatorLayout parent, EhDrawerLayout child, View dependency) {
for (int i = 0, n = child.getAboveSnackViewCount(); i < n; i++) {
View view = child.getAboveSnackViewAt(i);
if (view != null) {
float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight() - LayoutUtils.dp2pix(view.getContext(), 4));
view.setTranslationY(translationY);
}
}
return false;
}
private void updateChildTranslationForSnackbar(CoordinatorLayout parent,
EhDrawerLayout view, final View child) {
final float targetTransY = getChildTranslationYForSnackbar(parent, view);
float childTranslationY = 0.0f;
Object obj = child.getTag(R.id.fab_translation_y);
if (obj instanceof Float) {
childTranslationY = (Float) obj;
}
if (childTranslationY == targetTransY) {
// We're already at (or currently animating to) the target value, return...
return;
}
ValueAnimator fabTranslationYAnimator = null;
obj = child.getTag(R.id.fab_translation_y_animator);
if (obj instanceof ValueAnimator) {
fabTranslationYAnimator = (ValueAnimator) obj;
}
// Make sure that any current animation is cancelled
if (fabTranslationYAnimator != null && fabTranslationYAnimator.isRunning()) {
fabTranslationYAnimator.cancel();
}
final float currentTransY = child.getTranslationY();
if (child.isShown()
&& Math.abs(currentTransY - targetTransY) > (child.getHeight() * 0.667f)) {
// If the FAB will be travelling by more than 2/3 of it's height, let's animate
// it instead
if (fabTranslationYAnimator == null) {
fabTranslationYAnimator = ValueAnimator.ofFloat();
fabTranslationYAnimator.setInterpolator(AnimationUtils.FAST_SLOW_INTERPOLATOR);
fabTranslationYAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
child.setTranslationY((Float) animation.getAnimatedValue());
}
});
child.setTag(R.id.fab_translation_y_animator, fabTranslationYAnimator);
}
fabTranslationYAnimator.setFloatValues(currentTransY, targetTransY);
fabTranslationYAnimator.start();
} else {
// Now update the translation Y
child.setTranslationY(targetTransY);
}
child.setTag(R.id.fab_translation_y, targetTransY);
}
private float getChildTranslationYForSnackbar(CoordinatorLayout parent,
EhDrawerLayout child) {
float minOffset = 0;
final List<View> dependencies = parent.getDependencies(child);
for (int i = 0, z = dependencies.size(); i < z; i++) {
final View view = dependencies.get(i);
if (view instanceof Snackbar.SnackbarLayout && parent.doViewsOverlap(child, view)) {
minOffset = Math.min(minOffset,
view.getTranslationY() - view.getHeight());
@Override
public void onDependentViewRemoved(@NonNull CoordinatorLayout parent, @NonNull EhDrawerLayout child, @NonNull View dependency) {
for (int i = 0, n = child.getAboveSnackViewCount(); i < n; i++) {
View view = child.getAboveSnackViewAt(i);
if (view != null) {
ViewCompat.animate(view).translationY(0).start();
}
}
return minOffset;
}
}
}