packages/SystemUI/src/com/android/systemui/bubbles/BubbleView.java - platform/frameworks/base - Git at Google

 /*
  * 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.systemui.bubbles;

 import android.annotation.Nullable;
 import android.app.Notification;
 import android.content.Context;
 import android.graphics.Color;
 import android.graphics.drawable.AdaptiveIconDrawable;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.Icon;
 import android.graphics.drawable.InsetDrawable;
 import android.util.AttributeSet;
 import android.widget.FrameLayout;

 import com.android.internal.graphics.ColorUtils;
 import com.android.launcher3.icons.BitmapInfo;
 import com.android.systemui.Interpolators;
 import com.android.systemui.R;
 import com.android.systemui.statusbar.notification.collection.NotificationEntry;
 import com.android.systemui.statusbar.notification.row.ExpandableNotificationRow;

 /**
  * A floating object on the screen that can post message updates.
  */
 public class BubbleView extends FrameLayout {

     private static final int DARK_ICON_ALPHA = 180;
     private static final double ICON_MIN_CONTRAST = 4.1;
     private static final int DEFAULT_BACKGROUND_COLOR = Color.LTGRAY;
     // Same value as Launcher3 badge code
     private static final float WHITE_SCRIM_ALPHA = 0.54f;
     private Context mContext;

     private BadgedImageView mBadgedImageView;
     private int mBadgeColor;
     private int mIconInset;

     // mBubbleIconFactory cannot be static because it depends on Context.
     private BubbleIconFactory mBubbleIconFactory;

     private boolean mSuppressDot = false;

     private NotificationEntry mEntry;

     public BubbleView(Context context) {
         this(context, null);
     }

     public BubbleView(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
     }

     public BubbleView(Context context, AttributeSet attrs, int defStyleAttr) {
         this(context, attrs, defStyleAttr, 0);
     }

     public BubbleView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
         mContext = context;
         mIconInset = getResources().getDimensionPixelSize(R.dimen.bubble_icon_inset);
     }

     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
         mBadgedImageView = findViewById(R.id.bubble_image);
     }

     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
     }

     /**
      * Populates this view with a notification.
      * <p>
      * This should only be called when a new notification is being set on the view, updates to the
      * current notification should use {@link #update(NotificationEntry)}.
      *
      * @param entry the notification to display as a bubble.
      */
     public void setNotif(NotificationEntry entry) {
         mEntry = entry;
     }

     /**
      * The {@link NotificationEntry} associated with this view, if one exists.
      */
     @Nullable
     public NotificationEntry getEntry() {
         return mEntry;
     }

     /**
      * The key for the {@link NotificationEntry} associated with this view, if one exists.
      */
     @Nullable
     public String getKey() {
         return (mEntry != null) ? mEntry.key : null;
     }

     /**
      * Updates the UI based on the entry, updates badge and animates messages as needed.
      */
     public void update(NotificationEntry entry) {
         mEntry = entry;
         updateViews();
     }

     /**
      * @param factory Factory for creating normalized bubble icons.
      */
     public void setBubbleIconFactory(BubbleIconFactory factory) {
         mBubbleIconFactory = factory;
     }

     /**
      * @return the {@link ExpandableNotificationRow} view to display notification content when the
      * bubble is expanded.
      */
     @Nullable
     public ExpandableNotificationRow getRowView() {
         return (mEntry != null) ? mEntry.getRow() : null;
     }

     /** Changes the dot's visibility to match the bubble view's state. */
     void updateDotVisibility(boolean animate) {
         updateDotVisibility(animate, null /* after */);
     }


     /**
      * Sets whether or not to hide the dot even if we'd otherwise show it. This is used while the
      * flyout is visible or animating, to hide the dot until the flyout visually transforms into it.
      */
     void setSuppressDot(boolean suppressDot, boolean animate) {
         mSuppressDot = suppressDot;
         updateDotVisibility(animate);
     }

     /** Sets the position of the 'new' dot, animating it out and back in if requested. */
     void setDotPosition(boolean onLeft, boolean animate) {
         if (animate && onLeft != mBadgedImageView.getDotPosition() && !mSuppressDot) {
             animateDot(false /* showDot */, () -> {
                 mBadgedImageView.setDotPosition(onLeft);
                 animateDot(true /* showDot */, null);
             });
         } else {
             mBadgedImageView.setDotPosition(onLeft);
         }
     }

     boolean getDotPositionOnLeft() {
         return mBadgedImageView.getDotPosition();
     }

     /**
      * Changes the dot's visibility to match the bubble view's state, running the provided callback
      * after animation if requested.
      */
     private void updateDotVisibility(boolean animate, Runnable after) {
         boolean showDot = getEntry().showInShadeWhenBubble() && !mSuppressDot;

         if (animate) {
             animateDot(showDot, after);
         } else {
             mBadgedImageView.setShowDot(showDot);
         }
     }

     /**
      * Animates the badge to show or hide.
      */
     private void animateDot(boolean showDot, Runnable after) {
         if (mBadgedImageView.isShowingDot() != showDot) {
             if (showDot) {
                 mBadgedImageView.setShowDot(true);
             }

             mBadgedImageView.clearAnimation();
             mBadgedImageView.animate().setDuration(200)
                     .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                     .setUpdateListener((valueAnimator) -> {
                         float fraction = valueAnimator.getAnimatedFraction();
                         fraction = showDot ? fraction : 1f - fraction;
                         mBadgedImageView.setDotScale(fraction);
                     }).withEndAction(() -> {
                         if (!showDot) {
                             mBadgedImageView.setShowDot(false);
                         }

                         if (after != null) {
                             after.run();
                         }
             }).start();
         }
     }

     void updateViews() {
         if (mEntry == null || mBubbleIconFactory == null) {
             return;
         }
         Notification.BubbleMetadata metadata = mEntry.getBubbleMetadata();
         Notification n = mEntry.notification.getNotification();
         Icon ic;
         boolean needsTint;
         if (metadata != null) {
             ic = metadata.getIcon();
             needsTint = ic.getType() != Icon.TYPE_ADAPTIVE_BITMAP;
         } else {
             needsTint = n.getLargeIcon() == null;
             ic = needsTint ? n.getSmallIcon() : n.getLargeIcon();
         }
         Drawable iconDrawable = ic.loadDrawable(mContext);
         if (needsTint) {
             iconDrawable = buildIconWithTint(iconDrawable, n.color);
         }
         BitmapInfo bitmapInfo = mBubbleIconFactory.createBadgedIconBitmap(iconDrawable,
                 null /* user */,
                 true /* shrinkNonAdaptiveIcons */);
         mBadgedImageView.setImageBitmap(bitmapInfo.icon);

         int badgeColor = determineDominateColor(iconDrawable, n.color);
         mBadgeColor = badgeColor;
         mBadgedImageView.setDotColor(badgeColor);
         animateDot(mEntry.showInShadeWhenBubble() /* showDot */, null /* after */);
     }

     int getBadgeColor() {
         return mBadgeColor;
     }

     private Drawable buildIconWithTint(Drawable iconDrawable, int backgroundColor) {
         iconDrawable = checkTint(iconDrawable, backgroundColor);
         InsetDrawable foreground = new InsetDrawable(iconDrawable, mIconInset);
         ColorDrawable background = new ColorDrawable(backgroundColor);
         return new AdaptiveIconDrawable(background, foreground);
     }

     private Drawable checkTint(Drawable iconDrawable, int backgroundColor) {
         backgroundColor = ColorUtils.setAlphaComponent(backgroundColor, 255 /* alpha */);
         if (backgroundColor == Color.TRANSPARENT) {
             // ColorUtils throws exception when background is translucent.
             backgroundColor = DEFAULT_BACKGROUND_COLOR;
         }
         iconDrawable.setTint(Color.WHITE);
         double contrastRatio = ColorUtils.calculateContrast(Color.WHITE, backgroundColor);
         if (contrastRatio < ICON_MIN_CONTRAST) {
             int dark = ColorUtils.setAlphaComponent(Color.BLACK, DARK_ICON_ALPHA);
             iconDrawable.setTint(dark);
         }
         return iconDrawable;
     }

     private int determineDominateColor(Drawable d, int defaultTint) {
         // XXX: should we pull from the drawable, app icon, notif tint?
         return ColorUtils.blendARGB(defaultTint, Color.WHITE, WHITE_SCRIM_ALPHA);
     }
 }
	/*
	* 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.systemui.bubbles;

	import android.annotation.Nullable;
	import android.app.Notification;
	import android.content.Context;
	import android.graphics.Color;
	import android.graphics.drawable.AdaptiveIconDrawable;
	import android.graphics.drawable.ColorDrawable;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.Icon;
	import android.graphics.drawable.InsetDrawable;
	import android.util.AttributeSet;
	import android.widget.FrameLayout;

	import com.android.internal.graphics.ColorUtils;
	import com.android.launcher3.icons.BitmapInfo;
	import com.android.systemui.Interpolators;
	import com.android.systemui.R;
	import com.android.systemui.statusbar.notification.collection.NotificationEntry;
	import com.android.systemui.statusbar.notification.row.ExpandableNotificationRow;

	/**
	* A floating object on the screen that can post message updates.
	*/
	public class BubbleView extends FrameLayout {

	private static final int DARK_ICON_ALPHA = 180;
	private static final double ICON_MIN_CONTRAST = 4.1;
	private static final int DEFAULT_BACKGROUND_COLOR = Color.LTGRAY;
	// Same value as Launcher3 badge code
	private static final float WHITE_SCRIM_ALPHA = 0.54f;
	private Context mContext;

	private BadgedImageView mBadgedImageView;
	private int mBadgeColor;
	private int mIconInset;

	// mBubbleIconFactory cannot be static because it depends on Context.
	private BubbleIconFactory mBubbleIconFactory;

	private boolean mSuppressDot = false;

	private NotificationEntry mEntry;

	public BubbleView(Context context) {
	this(context, null);
	}

	public BubbleView(Context context, AttributeSet attrs) {
	this(context, attrs, 0);
	}

	public BubbleView(Context context, AttributeSet attrs, int defStyleAttr) {
	this(context, attrs, defStyleAttr, 0);
	}

	public BubbleView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
	super(context, attrs, defStyleAttr, defStyleRes);
	mContext = context;
	mIconInset = getResources().getDimensionPixelSize(R.dimen.bubble_icon_inset);
	}

	@Override
	protected void onFinishInflate() {
	super.onFinishInflate();
	mBadgedImageView = findViewById(R.id.bubble_image);
	}

	@Override
	protected void onAttachedToWindow() {
	super.onAttachedToWindow();
	}

	/**
	* Populates this view with a notification.
	* <p>
	* This should only be called when a new notification is being set on the view, updates to the
	* current notification should use {@link #update(NotificationEntry)}.
	*
	* @param entry the notification to display as a bubble.
	*/
	public void setNotif(NotificationEntry entry) {
	mEntry = entry;
	}

	/**
	* The {@link NotificationEntry} associated with this view, if one exists.
	*/
	@Nullable
	public NotificationEntry getEntry() {
	return mEntry;
	}

	/**
	* The key for the {@link NotificationEntry} associated with this view, if one exists.
	*/
	@Nullable
	public String getKey() {
	return (mEntry != null) ? mEntry.key : null;
	}

	/**
	* Updates the UI based on the entry, updates badge and animates messages as needed.
	*/
	public void update(NotificationEntry entry) {
	mEntry = entry;
	updateViews();
	}

	/**
	* @param factory Factory for creating normalized bubble icons.
	*/
	public void setBubbleIconFactory(BubbleIconFactory factory) {
	mBubbleIconFactory = factory;
	}

	/**
	* @return the {@link ExpandableNotificationRow} view to display notification content when the
	* bubble is expanded.
	*/
	@Nullable
	public ExpandableNotificationRow getRowView() {
	return (mEntry != null) ? mEntry.getRow() : null;
	}

	/** Changes the dot's visibility to match the bubble view's state. */
	void updateDotVisibility(boolean animate) {
	updateDotVisibility(animate, null /* after */);
	}


	/**
	* Sets whether or not to hide the dot even if we'd otherwise show it. This is used while the
	* flyout is visible or animating, to hide the dot until the flyout visually transforms into it.
	*/
	void setSuppressDot(boolean suppressDot, boolean animate) {
	mSuppressDot = suppressDot;
	updateDotVisibility(animate);
	}

	/** Sets the position of the 'new' dot, animating it out and back in if requested. */
	void setDotPosition(boolean onLeft, boolean animate) {
	if (animate && onLeft != mBadgedImageView.getDotPosition() && !mSuppressDot) {
	animateDot(false /* showDot */, () -> {
	mBadgedImageView.setDotPosition(onLeft);
	animateDot(true /* showDot */, null);
	});
	} else {
	mBadgedImageView.setDotPosition(onLeft);
	}
	}

	boolean getDotPositionOnLeft() {
	return mBadgedImageView.getDotPosition();
	}

	/**
	* Changes the dot's visibility to match the bubble view's state, running the provided callback
	* after animation if requested.
	*/
	private void updateDotVisibility(boolean animate, Runnable after) {
	boolean showDot = getEntry().showInShadeWhenBubble() && !mSuppressDot;

	if (animate) {
	animateDot(showDot, after);
	} else {
	mBadgedImageView.setShowDot(showDot);
	}
	}

	/**
	* Animates the badge to show or hide.
	*/
	private void animateDot(boolean showDot, Runnable after) {
	if (mBadgedImageView.isShowingDot() != showDot) {
	if (showDot) {
	mBadgedImageView.setShowDot(true);
	}

	mBadgedImageView.clearAnimation();
	mBadgedImageView.animate().setDuration(200)
	.setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
	.setUpdateListener((valueAnimator) -> {
	float fraction = valueAnimator.getAnimatedFraction();
	fraction = showDot ? fraction : 1f - fraction;
	mBadgedImageView.setDotScale(fraction);
	}).withEndAction(() -> {
	if (!showDot) {
	mBadgedImageView.setShowDot(false);
	}

	if (after != null) {
	after.run();
	}
	}).start();
	}
	}

	void updateViews() {
	if (mEntry == null \|\| mBubbleIconFactory == null) {
	return;
	}
	Notification.BubbleMetadata metadata = mEntry.getBubbleMetadata();
	Notification n = mEntry.notification.getNotification();
	Icon ic;
	boolean needsTint;
	if (metadata != null) {
	ic = metadata.getIcon();
	needsTint = ic.getType() != Icon.TYPE_ADAPTIVE_BITMAP;
	} else {
	needsTint = n.getLargeIcon() == null;
	ic = needsTint ? n.getSmallIcon() : n.getLargeIcon();
	}
	Drawable iconDrawable = ic.loadDrawable(mContext);
	if (needsTint) {
	iconDrawable = buildIconWithTint(iconDrawable, n.color);
	}
	BitmapInfo bitmapInfo = mBubbleIconFactory.createBadgedIconBitmap(iconDrawable,
	null /* user */,
	true /* shrinkNonAdaptiveIcons */);
	mBadgedImageView.setImageBitmap(bitmapInfo.icon);

	int badgeColor = determineDominateColor(iconDrawable, n.color);
	mBadgeColor = badgeColor;
	mBadgedImageView.setDotColor(badgeColor);
	animateDot(mEntry.showInShadeWhenBubble() /* showDot /, null / after */);
	}

	int getBadgeColor() {
	return mBadgeColor;
	}

	private Drawable buildIconWithTint(Drawable iconDrawable, int backgroundColor) {
	iconDrawable = checkTint(iconDrawable, backgroundColor);
	InsetDrawable foreground = new InsetDrawable(iconDrawable, mIconInset);
	ColorDrawable background = new ColorDrawable(backgroundColor);
	return new AdaptiveIconDrawable(background, foreground);
	}

	private Drawable checkTint(Drawable iconDrawable, int backgroundColor) {
	backgroundColor = ColorUtils.setAlphaComponent(backgroundColor, 255 /* alpha */);
	if (backgroundColor == Color.TRANSPARENT) {
	// ColorUtils throws exception when background is translucent.
	backgroundColor = DEFAULT_BACKGROUND_COLOR;
	}
	iconDrawable.setTint(Color.WHITE);
	double contrastRatio = ColorUtils.calculateContrast(Color.WHITE, backgroundColor);
	if (contrastRatio < ICON_MIN_CONTRAST) {
	int dark = ColorUtils.setAlphaComponent(Color.BLACK, DARK_ICON_ALPHA);
	iconDrawable.setTint(dark);
	}
	return iconDrawable;
	}

	private int determineDominateColor(Drawable d, int defaultTint) {
	// XXX: should we pull from the drawable, app icon, notif tint?
	return ColorUtils.blendARGB(defaultTint, Color.WHITE, WHITE_SCRIM_ALPHA);
	}
	}