Merge changes from topic "tr-anim" into sc-dev am: 27008c1123 am: 565c15a8d6 am: 2af2705bed (d6f1da05) · Commits · e / os / android_frameworks_base

core/java/android/view/translation/UiTranslationController.java

+7 −3

Original line number	Diff line number	Diff line
		@@ -404,9 +404,6 @@ public class UiTranslationController {
		// implememtation.
		callback = new TextViewTranslationCallback();
		view.setViewTranslationCallback(callback);
		if (mViewsToPadContent.contains(autofillId)) {
		callback.enableContentPadding();
		}
		} else {
		if (DEBUG) {
		Log.d(TAG, view + " doesn't support showing translation because of "
		@@ -415,6 +412,10 @@ public class UiTranslationController {
		return;
		}
		}
		callback.setAnimationDurationMillis(ANIMATION_DURATION_MILLIS);
		if (mViewsToPadContent.contains(autofillId)) {
		callback.enableContentPadding();
		}
		view.onViewTranslationResponse(response);
		callback.onShowTranslation(view);
		});
		@@ -422,6 +423,9 @@ public class UiTranslationController {
		}
		}

		// TODO: Use a device config value.
		private static final int ANIMATION_DURATION_MILLIS = 250;

		/**
		* Creates a Translator for the given source and target translation specs and start the ui
		* translation when the Translator is created successfully.

core/java/android/view/translation/ViewTranslationCallback.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -64,4 +64,12 @@ public interface ViewTranslationCallback {
		* @hide
		*/
		default void enableContentPadding() {}

		/**
		* Sets the duration for animations while transitioning the view between the original and
		* translated contents.
		*
		* @hide
		*/
		default void setAnimationDurationMillis(int durationMillis) {}
		}

core/java/android/widget/TextViewTranslationCallback.java

+81 −5

Original line number	Diff line number	Diff line
		@@ -16,10 +16,15 @@

		package android.widget;

		import android.animation.Animator;
		import android.animation.ValueAnimator;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.content.res.ColorStateList;
		import android.graphics.Color;
		import android.os.Build;
		import android.text.TextUtils;
		import android.text.method.TransformationMethod;
		import android.text.method.TranslationTransformationMethod;
		import android.util.Log;
		import android.view.View;
		@@ -47,6 +52,7 @@ public class TextViewTranslationCallback implements ViewTranslationCallback {
		private boolean mIsShowingTranslation = false;
		private boolean mIsTextPaddingEnabled = false;
		private CharSequence mPaddedText;
		private int mAnimationDurationMillis = 250; // default value

		private CharSequence mContentDescription;

		@@ -82,14 +88,19 @@ public class TextViewTranslationCallback implements ViewTranslationCallback {
		*/
		@Override
		public boolean onShowTranslation(@NonNull View view) {
		mIsShowingTranslation = true;
		if (view.getViewTranslationResponse() == null) {
		Log.wtf(TAG, "onShowTranslation() shouldn't be called before "
		+ "onViewTranslationResponse().");
		return false;
		}
		if (mTranslationTransformation != null) {
		((TextView) view).setTransformationMethod(mTranslationTransformation);
		final TransformationMethod transformation = mTranslationTransformation;
		runWithAnimation(
		(TextView) view,
		() -> {
		mIsShowingTranslation = true;
		((TextView) view).setTransformationMethod(transformation);
		});
		ViewTranslationResponse response = view.getViewTranslationResponse();
		if (response.getKeys().contains(ViewTranslationRequest.ID_CONTENT_DESCRIPTION)) {
		CharSequence translatedContentDescription =
		@@ -114,7 +125,6 @@ public class TextViewTranslationCallback implements ViewTranslationCallback {
		*/
		@Override
		public boolean onHideTranslation(@NonNull View view) {
		mIsShowingTranslation = false;
		if (view.getViewTranslationResponse() == null) {
		Log.wtf(TAG, "onHideTranslation() shouldn't be called before "
		+ "onViewTranslationResponse().");
		@@ -122,8 +132,14 @@ public class TextViewTranslationCallback implements ViewTranslationCallback {
		}
		// Restore to original text content.
		if (mTranslationTransformation != null) {
		((TextView) view).setTransformationMethod(
		mTranslationTransformation.getOriginalTransformationMethod());
		final TransformationMethod transformation =
		mTranslationTransformation.getOriginalTransformationMethod();
		runWithAnimation(
		(TextView) view,
		() -> {
		mIsShowingTranslation = false;
		((TextView) view).setTransformationMethod(transformation);
		});
		if (!TextUtils.isEmpty(mContentDescription)) {
		view.setContentDescription(mContentDescription);
		}
		@@ -212,4 +228,64 @@ public class TextViewTranslationCallback implements ViewTranslationCallback {
		}

		private static final char COMPAT_PAD_CHARACTER = '\u2002';

		@Override
		public void setAnimationDurationMillis(int durationMillis) {
		mAnimationDurationMillis = durationMillis;
		}

		/**
		* Applies a simple text alpha animation when toggling between original and translated text. The
		* text is fully faded out, then swapped to the new text, then the fading is reversed.
		*
		* @param runnable the operation to run on the view after the text is faded out, to change to
		* displaying the original or translated text.
		*/
		private void runWithAnimation(TextView view, Runnable runnable) {
		if (mAnimator != null) {
		mAnimator.end();
		// Note: mAnimator is now null; do not use again here.
		}
		int fadedOutColor = colorWithAlpha(view.getCurrentTextColor(), 0);
		mAnimator = ValueAnimator.ofArgb(view.getCurrentTextColor(), fadedOutColor);
		mAnimator.addUpdateListener(
		// Note that if the text has a ColorStateList, this replaces it with a single color
		// for all states. The original ColorStateList is restored when the animation ends
		// (see below).
		(valueAnimator) -> view.setTextColor((Integer) valueAnimator.getAnimatedValue()));
		mAnimator.setRepeatMode(ValueAnimator.REVERSE);
		mAnimator.setRepeatCount(1);
		mAnimator.setDuration(mAnimationDurationMillis);
		final ColorStateList originalColors = view.getTextColors();
		mAnimator.addListener(new Animator.AnimatorListener() {
		@Override
		public void onAnimationStart(Animator animation) {
		}

		@Override
		public void onAnimationEnd(Animator animation) {
		view.setTextColor(originalColors);
		mAnimator = null;
		}

		@Override
		public void onAnimationCancel(Animator animation) {
		}

		@Override
		public void onAnimationRepeat(Animator animation) {
		runnable.run();
		}
		});
		mAnimator.start();
		}

		private ValueAnimator mAnimator;

		/**
		* Returns {@code color} with alpha changed to {@code newAlpha}
		*/
		private static int colorWithAlpha(int color, int newAlpha) {
		return Color.argb(newAlpha, Color.red(color), Color.green(color), Color.blue(color));
		}
		}