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.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Matrix;
 import android.graphics.Path;
 import android.graphics.drawable.AdaptiveIconDrawable;
 import android.graphics.drawable.BitmapDrawable;
 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.util.PathParser;
 import android.widget.FrameLayout;

 import com.android.internal.graphics.ColorUtils;
 import com.android.launcher3.icons.ShadowGenerator;
 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;
     private Drawable mUserBadgedAppIcon;

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

     private boolean mSuppressDot;

     private Bubble mBubble;

     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 bubble.
      * <p>
      * This should only be called when a new bubble is being set on the view, updates to the
      * current bubble should use {@link #update(Bubble)}.
      *
      * @param bubble the bubble to display in this view.
      */
     public void setBubble(Bubble bubble) {
         mBubble = bubble;
     }

     /**
      * The {@link NotificationEntry} associated with this view, if one exists.
      */
     @Nullable
     public NotificationEntry getEntry() {
         return mBubble != null ? mBubble.getEntry() : null;
     }

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

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

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

     public void setAppIcon(Drawable appIcon) {
         mUserBadgedAppIcon = appIcon;
     }

     /**
      * @return the {@link ExpandableNotificationRow} view to display notification content when the
      * bubble is expanded.
      */
     @Nullable
     public ExpandableNotificationRow getRowView() {
         return (mBubble != null) ? mBubble.getEntry().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.getDotOnLeft() && shouldShowDot()) {
             animateDot(false /* showDot */, () -> {
                 mBadgedImageView.setDotOnLeft(onLeft);
                 animateDot(true /* showDot */, null);
             });
         } else {
             mBadgedImageView.setDotOnLeft(onLeft);
         }
     }

     float[] getDotCenter() {
         float[] unscaled = mBadgedImageView.getDotCenter();
         return new float[]{unscaled[0], unscaled[1]};
     }

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

     /**
      * 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) {
         final boolean showDot = shouldShowDot();
         if (animate) {
             animateDot(showDot, after);
         } else {
             mBadgedImageView.setShowDot(showDot);
             mBadgedImageView.setDotScale(showDot ? 1f : 0f);
         }
     }

     /**
      * Animates the badge to show or hide.
      */
     private void animateDot(boolean showDot, Runnable after) {
         if (mBadgedImageView.isShowingDot() == showDot) {
             return;
         }
         // Do NOT wait until after animation ends to setShowDot
         // to avoid overriding more recent showDot states.
         mBadgedImageView.setShowDot(showDot);
         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(() -> {
             mBadgedImageView.setDotScale(showDot ? 1f : 0f);
             if (after != null) {
                 after.run();
             }
         }).start();
     }

     void updateViews() {
         if (mBubble == null || mBubbleIconFactory == null) {
             return;
         }
         // Update icon.
         Notification.BubbleMetadata metadata = mBubble.getEntry().getBubbleMetadata();
         Notification n = mBubble.getEntry().notification.getNotification();
         Icon ic = metadata.getIcon();
         boolean needsTint = ic.getType() != Icon.TYPE_ADAPTIVE_BITMAP;

         Drawable iconDrawable = ic.loadDrawable(mContext);
         if (needsTint) {
             iconDrawable = buildIconWithTint(iconDrawable, n.color);
         }
         Bitmap bubbleIcon = mBubbleIconFactory.createBadgedIconBitmap(iconDrawable,
                 null /* user */,
                 true /* shrinkNonAdaptiveIcons */).icon;

         // Give it a shadow
         Bitmap userBadgedBitmap = mBubbleIconFactory.createIconBitmap(mUserBadgedAppIcon,
                 1f, mBubbleIconFactory.getBadgeSize());
         Canvas c = new Canvas();
         ShadowGenerator shadowGenerator = new ShadowGenerator(mBubbleIconFactory.getBadgeSize());
         c.setBitmap(userBadgedBitmap);
         shadowGenerator.recreateIcon(Bitmap.createBitmap(userBadgedBitmap), c);

         mBubbleIconFactory.badgeWithDrawable(bubbleIcon,
                 new BitmapDrawable(mContext.getResources(), userBadgedBitmap));
         mBadgedImageView.setImageBitmap(bubbleIcon);

         // Update badge.
         int badgeColor = determineDominateColor(iconDrawable, n.color);
         mBadgeColor = badgeColor;
         mBadgedImageView.setDotColor(badgeColor);

         // Update dot.
         Path iconPath = PathParser.createPathFromPathData(
                 getResources().getString(com.android.internal.R.string.config_icon_mask));
         Matrix matrix = new Matrix();
         float scale = mBubbleIconFactory.getNormalizer().getScale(iconDrawable,
                 null /* outBounds */, null /* path */, null /* outMaskShape */);
         float radius = BadgedImageView.DEFAULT_PATH_SIZE / 2f;
         matrix.setScale(scale /* x scale */, scale /* y scale */, radius /* pivot x */,
                 radius /* pivot y */);
         iconPath.transform(matrix);
         mBadgedImageView.drawDot(iconPath);

         animateDot(shouldShowDot(), null /* after */);
     }

     boolean shouldShowDot() {
         return mBubble.showBubbleDot() && !mSuppressDot;
     }

     int getBadgeColor() {
         return mBadgeColor;
     }

     private AdaptiveIconDrawable 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.Bitmap;
	import android.graphics.Canvas;
	import android.graphics.Color;
	import android.graphics.Matrix;
	import android.graphics.Path;
	import android.graphics.drawable.AdaptiveIconDrawable;
	import android.graphics.drawable.BitmapDrawable;
	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.util.PathParser;
	import android.widget.FrameLayout;

	import com.android.internal.graphics.ColorUtils;
	import com.android.launcher3.icons.ShadowGenerator;
	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;
	private Drawable mUserBadgedAppIcon;

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

	private boolean mSuppressDot;

	private Bubble mBubble;

	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 bubble.
	* <p>
	* This should only be called when a new bubble is being set on the view, updates to the
	* current bubble should use {@link #update(Bubble)}.
	*
	* @param bubble the bubble to display in this view.
	*/
	public void setBubble(Bubble bubble) {
	mBubble = bubble;
	}

	/**
	* The {@link NotificationEntry} associated with this view, if one exists.
	*/
	@Nullable
	public NotificationEntry getEntry() {
	return mBubble != null ? mBubble.getEntry() : null;
	}

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

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

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

	public void setAppIcon(Drawable appIcon) {
	mUserBadgedAppIcon = appIcon;
	}

	/**
	* @return the {@link ExpandableNotificationRow} view to display notification content when the
	* bubble is expanded.
	*/
	@Nullable
	public ExpandableNotificationRow getRowView() {
	return (mBubble != null) ? mBubble.getEntry().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.getDotOnLeft() && shouldShowDot()) {
	animateDot(false /* showDot */, () -> {
	mBadgedImageView.setDotOnLeft(onLeft);
	animateDot(true /* showDot */, null);
	});
	} else {
	mBadgedImageView.setDotOnLeft(onLeft);
	}
	}

	float[] getDotCenter() {
	float[] unscaled = mBadgedImageView.getDotCenter();
	return new float[]{unscaled[0], unscaled[1]};
	}

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

	/**
	* 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) {
	final boolean showDot = shouldShowDot();
	if (animate) {
	animateDot(showDot, after);
	} else {
	mBadgedImageView.setShowDot(showDot);
	mBadgedImageView.setDotScale(showDot ? 1f : 0f);
	}
	}

	/**
	* Animates the badge to show or hide.
	*/
	private void animateDot(boolean showDot, Runnable after) {
	if (mBadgedImageView.isShowingDot() == showDot) {
	return;
	}
	// Do NOT wait until after animation ends to setShowDot
	// to avoid overriding more recent showDot states.
	mBadgedImageView.setShowDot(showDot);
	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(() -> {
	mBadgedImageView.setDotScale(showDot ? 1f : 0f);
	if (after != null) {
	after.run();
	}
	}).start();
	}

	void updateViews() {
	if (mBubble == null \|\| mBubbleIconFactory == null) {
	return;
	}
	// Update icon.
	Notification.BubbleMetadata metadata = mBubble.getEntry().getBubbleMetadata();
	Notification n = mBubble.getEntry().notification.getNotification();
	Icon ic = metadata.getIcon();
	boolean needsTint = ic.getType() != Icon.TYPE_ADAPTIVE_BITMAP;

	Drawable iconDrawable = ic.loadDrawable(mContext);
	if (needsTint) {
	iconDrawable = buildIconWithTint(iconDrawable, n.color);
	}
	Bitmap bubbleIcon = mBubbleIconFactory.createBadgedIconBitmap(iconDrawable,
	null /* user */,
	true /* shrinkNonAdaptiveIcons */).icon;

	// Give it a shadow
	Bitmap userBadgedBitmap = mBubbleIconFactory.createIconBitmap(mUserBadgedAppIcon,
	1f, mBubbleIconFactory.getBadgeSize());
	Canvas c = new Canvas();
	ShadowGenerator shadowGenerator = new ShadowGenerator(mBubbleIconFactory.getBadgeSize());
	c.setBitmap(userBadgedBitmap);
	shadowGenerator.recreateIcon(Bitmap.createBitmap(userBadgedBitmap), c);

	mBubbleIconFactory.badgeWithDrawable(bubbleIcon,
	new BitmapDrawable(mContext.getResources(), userBadgedBitmap));
	mBadgedImageView.setImageBitmap(bubbleIcon);

	// Update badge.
	int badgeColor = determineDominateColor(iconDrawable, n.color);
	mBadgeColor = badgeColor;
	mBadgedImageView.setDotColor(badgeColor);

	// Update dot.
	Path iconPath = PathParser.createPathFromPathData(
	getResources().getString(com.android.internal.R.string.config_icon_mask));
	Matrix matrix = new Matrix();
	float scale = mBubbleIconFactory.getNormalizer().getScale(iconDrawable,
	null /* outBounds /, null / path /, null / outMaskShape */);
	float radius = BadgedImageView.DEFAULT_PATH_SIZE / 2f;
	matrix.setScale(scale /* x scale /, scale / y scale /, radius / pivot x */,
	radius /* pivot y */);
	iconPath.transform(matrix);
	mBadgedImageView.drawDot(iconPath);

	animateDot(shouldShowDot(), null /* after */);
	}

	boolean shouldShowDot() {
	return mBubble.showBubbleDot() && !mSuppressDot;
	}

	int getBadgeColor() {
	return mBadgeColor;
	}

	private AdaptiveIconDrawable 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);
	}
	}