diff options
Diffstat (limited to 'src/com/android/launcher3/anim')
| -rw-r--r-- | src/com/android/launcher3/anim/AlphaUpdateListener.java | 73 | ||||
| -rw-r--r-- | src/com/android/launcher3/anim/PropertySetter.java | 93 |
2 files changed, 166 insertions, 0 deletions
diff --git a/src/com/android/launcher3/anim/AlphaUpdateListener.java b/src/com/android/launcher3/anim/AlphaUpdateListener.java new file mode 100644 index 000000000..04d97a728 --- /dev/null +++ b/src/com/android/launcher3/anim/AlphaUpdateListener.java @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3.anim; + +import android.animation.Animator; +import android.animation.AnimatorListenerAdapter; +import android.animation.ValueAnimator; +import android.animation.ValueAnimator.AnimatorUpdateListener; +import android.view.View; + +/** + * A convenience class to update a view's visibility state after an alpha animation. + */ +public class AlphaUpdateListener extends AnimatorListenerAdapter implements AnimatorUpdateListener { + private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f; + + private View mView; + private boolean mAccessibilityEnabled; + private boolean mCanceled = false; + + public AlphaUpdateListener(View v, boolean accessibilityEnabled) { + mView = v; + mAccessibilityEnabled = accessibilityEnabled; + } + + @Override + public void onAnimationUpdate(ValueAnimator arg0) { + updateVisibility(mView, mAccessibilityEnabled); + } + + public static void updateVisibility(View view, boolean accessibilityEnabled) { + // We want to avoid the extra layout pass by setting the views to GONE unless + // accessibility is on, in which case not setting them to GONE causes a glitch. + int invisibleState = accessibilityEnabled ? View.GONE : View.INVISIBLE; + if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) { + view.setVisibility(invisibleState); + } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD + && view.getVisibility() != View.VISIBLE) { + view.setVisibility(View.VISIBLE); + } + } + + @Override + public void onAnimationCancel(Animator animation) { + mCanceled = true; + } + + @Override + public void onAnimationEnd(Animator arg0) { + if (mCanceled) return; + updateVisibility(mView, mAccessibilityEnabled); + } + + @Override + public void onAnimationStart(Animator arg0) { + // We want the views to be visible for animation, so fade-in/out is visible + mView.setVisibility(View.VISIBLE); + } +}
\ No newline at end of file diff --git a/src/com/android/launcher3/anim/PropertySetter.java b/src/com/android/launcher3/anim/PropertySetter.java new file mode 100644 index 000000000..51580b1ea --- /dev/null +++ b/src/com/android/launcher3/anim/PropertySetter.java @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3.anim; + +import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled; + +import android.animation.Animator; +import android.animation.ObjectAnimator; +import android.animation.TimeInterpolator; +import android.util.Property; +import android.view.View; + +/** + * Utility class for setting a property with or without animation + */ +public class PropertySetter { + + public static final PropertySetter NO_ANIM_PROPERTY_SETTER = new PropertySetter(); + + public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) { + view.setAlpha(alpha); + AlphaUpdateListener.updateVisibility(view, isAccessibilityEnabled(view.getContext())); + } + + public <T> void setFloat(T target, Property<T, Float> property, float value, + TimeInterpolator interpolator) { + property.set(target, value); + } + + public <T> void setInt(T target, Property<T, Integer> property, int value, + TimeInterpolator interpolator) { + property.set(target, value); + } + + public static class AnimatedPropertySetter extends PropertySetter { + + private final long mDuration; + private final AnimatorSetBuilder mStateAnimator; + + public AnimatedPropertySetter(long duration, AnimatorSetBuilder builder) { + mDuration = duration; + mStateAnimator = builder; + } + + @Override + public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) { + if (view.getAlpha() == alpha) { + return; + } + ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha); + anim.addListener(new AlphaUpdateListener( + view, isAccessibilityEnabled(view.getContext()))); + anim.setDuration(mDuration).setInterpolator(interpolator); + mStateAnimator.play(anim); + } + + @Override + public <T> void setFloat(T target, Property<T, Float> property, float value, + TimeInterpolator interpolator) { + if (property.get(target) == value) { + return; + } + Animator anim = ObjectAnimator.ofFloat(target, property, value); + anim.setDuration(mDuration).setInterpolator(interpolator); + mStateAnimator.play(anim); + } + + @Override + public <T> void setInt(T target, Property<T, Integer> property, int value, + TimeInterpolator interpolator) { + if (property.get(target) == value) { + return; + } + Animator anim = ObjectAnimator.ofInt(target, property, value); + anim.setDuration(mDuration).setInterpolator(interpolator); + mStateAnimator.play(anim); + } + } +} |