Files
Lawnchair/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
T
Ats Jenk d7fe32ab8e Implement API to animate bubble bar position
Create a new API to animate bubble bar position.
Animating it will not update its laid out location.
To update bubble bar laid out location, BubbleBarUpdate can be used.
Applying a location change from BubbleBarUpdate no longer animates the
change.

Bug: 330585402
Flag: ACONFIG com.android.wm.shell.enable_bubble_bar DEVELOPMENT
Test: long press bubble bar and drag it to left and right
Change-Id: I2572da4c063fc8e07cf07c4303778d343baa4ec4
2024-04-30 13:12:56 -07:00

850 lines
35 KiB
Java

/*
* Copyright (C) 2023 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.taskbar.bubbles;
import static com.android.app.animation.Interpolators.EMPHASIZED_ACCELERATE;
import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.annotation.Nullable;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.PointF;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.LayoutDirection;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import androidx.dynamicanimation.animation.SpringForce;
import com.android.launcher3.R;
import com.android.launcher3.anim.SpringAnimationBuilder;
import com.android.wm.shell.common.bubbles.BubbleBarLocation;
import java.util.List;
import java.util.function.Consumer;
/**
* The view that holds all the bubble views. Modifying this view should happen through
* {@link BubbleBarViewController}. Updates to the bubbles themselves (adds, removes, updates,
* selection) should happen through {@link BubbleBarController} which is the source of truth
* for state information about the bubbles.
* <p>
* The bubble bar has a couple of visual states:
* - stashed as a handle
* - unstashed but collapsed, in this state the bar is showing but the bubbles are stacked within it
* - unstashed and expanded, in this state the bar is showing and the bubbles are shown in a row
* with one of the bubbles being selected. Additionally, WMShell will display the expanded bubble
* view above the bar.
* <p>
* The bubble bar has some behavior related to taskbar:
* - When taskbar is unstashed, bubble bar will also become unstashed (but in its "collapsed"
* state)
* - When taskbar is stashed, bubble bar will also become stashed (unless bubble bar is in its
* "expanded" state)
* - When bubble bar is in its "expanded" state, taskbar becomes stashed
* <p>
* If there are no bubbles, the bubble bar and bubble stashed handle are not shown. Additionally
* the bubble bar and stashed handle are not shown on lockscreen.
* <p>
* When taskbar is in persistent or 3 button nav mode, the bubble bar is not available, and instead
* the bubbles are shown fully by WMShell in their floating mode.
*/
public class BubbleBarView extends FrameLayout {
private static final String TAG = BubbleBarView.class.getSimpleName();
// TODO: (b/273594744) calculate the amount of space we have and base the max on that
// if it's smaller than 5.
private static final int MAX_BUBBLES = 5;
private static final int ARROW_POSITION_ANIMATION_DURATION_MS = 200;
private static final int WIDTH_ANIMATION_DURATION_MS = 200;
private static final long FADE_OUT_ANIM_ALPHA_DURATION_MS = 50L;
private static final long FADE_OUT_ANIM_ALPHA_DELAY_MS = 50L;
private static final long FADE_OUT_ANIM_POSITION_DURATION_MS = 100L;
// During fade out animation we shift the bubble bar 1/80th of the screen width
private static final float FADE_OUT_ANIM_POSITION_SHIFT = 1 / 80f;
private static final long FADE_IN_ANIM_ALPHA_DURATION_MS = 100L;
// Use STIFFNESS_MEDIUMLOW which is not defined in the API constants
private static final float FADE_IN_ANIM_POSITION_SPRING_STIFFNESS = 400f;
// During fade in animation we shift the bubble bar 1/60th of the screen width
private static final float FADE_IN_ANIM_POSITION_SHIFT = 1 / 60f;
private final BubbleBarBackground mBubbleBarBackground;
private boolean mIsAnimatingNewBubble = false;
/**
* The current bounds of all the bubble bar. Note that these bounds may not account for
* translation. The bounds should be retrieved using {@link #getBubbleBarBounds()} which
* updates the bounds and accounts for translation.
*/
private final Rect mBubbleBarBounds = new Rect();
// The amount the bubbles overlap when they are stacked in the bubble bar
private final float mIconOverlapAmount;
// The spacing between the bubbles when bubble bar is expanded
private final float mExpandedBarIconsSpacing;
// The spacing between the bubbles and the borders of the bubble bar
private float mBubbleBarPadding;
// The size of a bubble in the bar
private float mIconSize;
// The elevation of the bubbles within the bar
private final float mBubbleElevation;
private final float mDragElevation;
private final int mPointerSize;
// Whether the bar is expanded (i.e. the bubble activity is being displayed).
private boolean mIsBarExpanded = false;
// The currently selected bubble view.
@Nullable
private BubbleView mSelectedBubbleView;
private BubbleBarLocation mBubbleBarLocation = BubbleBarLocation.DEFAULT;
// The click listener when the bubble bar is collapsed.
private View.OnClickListener mOnClickListener;
private final Rect mTempRect = new Rect();
private float mRelativePivotX = 1f;
private float mRelativePivotY = 1f;
// An animator that represents the expansion state of the bubble bar, where 0 corresponds to the
// collapsed state and 1 to the fully expanded state.
private final ValueAnimator mWidthAnimator = ValueAnimator.ofFloat(0, 1);
@Nullable
private Animator mBubbleBarLocationAnimator = null;
// We don't reorder the bubbles when they are expanded as it could be jarring for the user
// this runnable will be populated with any reordering of the bubbles that should be applied
// once they are collapsed.
@Nullable
private Runnable mReorderRunnable;
@Nullable
private Consumer<String> mUpdateSelectedBubbleAfterCollapse;
private boolean mDragging;
@Nullable
private BubbleView mDraggedBubbleView;
private int mPreviousLayoutDirection = LayoutDirection.UNDEFINED;
public BubbleBarView(Context context) {
this(context, null);
}
public BubbleBarView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public BubbleBarView(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public BubbleBarView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
setAlpha(0);
setVisibility(INVISIBLE);
mIconOverlapAmount = getResources().getDimensionPixelSize(R.dimen.bubblebar_icon_overlap);
mBubbleBarPadding = getResources().getDimensionPixelSize(R.dimen.bubblebar_icon_spacing);
mIconSize = getResources().getDimensionPixelSize(R.dimen.bubblebar_icon_size);
mExpandedBarIconsSpacing = getResources().getDimensionPixelSize(
R.dimen.bubblebar_expanded_icon_spacing);
mBubbleElevation = getResources().getDimensionPixelSize(R.dimen.bubblebar_icon_elevation);
mDragElevation = getResources().getDimensionPixelSize(R.dimen.bubblebar_drag_elevation);
mPointerSize = getResources()
.getDimensionPixelSize(R.dimen.bubblebar_pointer_visible_size);
setClipToPadding(false);
mBubbleBarBackground = new BubbleBarBackground(context, getBubbleBarExpandedHeight());
setBackgroundDrawable(mBubbleBarBackground);
mWidthAnimator.setDuration(WIDTH_ANIMATION_DURATION_MS);
mWidthAnimator.addUpdateListener(animation -> {
updateChildrenRenderNodeProperties(mBubbleBarLocation);
invalidate();
});
mWidthAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
mBubbleBarBackground.showArrow(mIsBarExpanded);
if (!mIsBarExpanded && mReorderRunnable != null) {
mReorderRunnable.run();
mReorderRunnable = null;
}
// If the bar was just collapsed and the overflow was the last bubble that was
// selected, set the first bubble as selected.
if (!mIsBarExpanded && mUpdateSelectedBubbleAfterCollapse != null
&& mSelectedBubbleView != null
&& mSelectedBubbleView.getBubble() instanceof BubbleBarOverflow) {
BubbleView firstBubble = (BubbleView) getChildAt(0);
mUpdateSelectedBubbleAfterCollapse.accept(firstBubble.getBubble().getKey());
}
updateWidth();
}
@Override
public void onAnimationRepeat(Animator animation) {
}
@Override
public void onAnimationStart(Animator animation) {
mBubbleBarBackground.showArrow(true);
}
});
}
/**
* Sets new icon size and spacing between icons and bubble bar borders.
*
* @param newIconSize new icon size
* @param spacing spacing between icons and bubble bar borders.
*/
// TODO(b/335575529): animate bubble bar icons size change
public void setIconSizeAndPadding(float newIconSize, float spacing) {
// TODO(b/335457839): handle new bubble animation during the size change
mBubbleBarPadding = spacing;
mIconSize = newIconSize;
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
View childView = getChildAt(i);
FrameLayout.LayoutParams params = (LayoutParams) childView.getLayoutParams();
params.height = (int) mIconSize;
params.width = (int) mIconSize;
childView.setLayoutParams(params);
}
mBubbleBarBackground.setHeight(getBubbleBarExpandedHeight());
updateLayoutParams();
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
mBubbleBarBounds.left = left;
mBubbleBarBounds.top = top + mPointerSize;
mBubbleBarBounds.right = right;
mBubbleBarBounds.bottom = bottom;
// The bubble bar handle is aligned according to the relative pivot,
// by default it's aligned to the bottom edge of the screen so scale towards that
setPivotX(mRelativePivotX * getWidth());
setPivotY(mRelativePivotY * getHeight());
// Position the views
updateChildrenRenderNodeProperties(mBubbleBarLocation);
}
@Override
public void onRtlPropertiesChanged(int layoutDirection) {
if (mBubbleBarLocation == BubbleBarLocation.DEFAULT
&& mPreviousLayoutDirection != layoutDirection) {
Log.d(TAG, "BubbleBar RTL properties changed, new layoutDirection=" + layoutDirection
+ " previous layoutDirection=" + mPreviousLayoutDirection);
mPreviousLayoutDirection = layoutDirection;
onBubbleBarLocationChanged();
}
}
@SuppressLint("RtlHardcoded")
private void onBubbleBarLocationChanged() {
final boolean onLeft = mBubbleBarLocation.isOnLeft(isLayoutRtl());
mBubbleBarBackground.setAnchorLeft(onLeft);
mRelativePivotX = onLeft ? 0f : 1f;
if (getLayoutParams() instanceof LayoutParams lp) {
lp.gravity = Gravity.BOTTOM | (onLeft ? Gravity.LEFT : Gravity.RIGHT);
setLayoutParams(lp);
}
invalidate();
}
/**
* @return current {@link BubbleBarLocation}
*/
public BubbleBarLocation getBubbleBarLocation() {
return mBubbleBarLocation;
}
/**
* Update {@link BubbleBarLocation}
*/
public void setBubbleBarLocation(BubbleBarLocation bubbleBarLocation) {
if (mBubbleBarLocationAnimator != null) {
mBubbleBarLocationAnimator.removeAllListeners();
mBubbleBarLocationAnimator.cancel();
mBubbleBarLocationAnimator = null;
}
setTranslationX(0f);
setAlpha(1f);
if (bubbleBarLocation != mBubbleBarLocation) {
mBubbleBarLocation = bubbleBarLocation;
onBubbleBarLocationChanged();
invalidate();
}
}
/**
* Set whether this view is being currently being dragged
*/
public void setIsDragging(boolean dragging) {
if (mDragging == dragging) {
return;
}
mDragging = dragging;
setElevation(dragging ? mDragElevation : mBubbleElevation);
}
/**
* Get translation for bubble bar when drag is released and it needs to animate back to the
* resting position.
* Resting position is based on the supplied location. If the supplied location is different
* from the internal location that was used to lay out the bubble bar, translation values are
* calculated to position the bar at the desired location.
*
* @param initialTranslation initial bubble bar translation at the start of drag
* @param location desired location of the bubble bar when drag is released
* @return point with x and y values representing translation on x and y-axis
*/
public PointF getBubbleBarDragReleaseTranslation(PointF initialTranslation,
BubbleBarLocation location) {
// Start with the initial translation. Value on y-axis can be reused.
final PointF dragEndTranslation = new PointF(initialTranslation);
// Bubble bar is laid out on left or right side of the screen. And the desired new
// location is on the other side. Calculate x translation value required to shift
// bubble bar from one side to the other.
final float shift = getDistanceFromOtherSide();
if (location.isOnLeft(isLayoutRtl())) {
// New location is on the left, shift left
// before -> |......ooo.| after -> |.ooo......|
dragEndTranslation.x = -shift;
} else {
// New location is on the right, shift right
// before -> |.ooo......| after -> |......ooo.|
dragEndTranslation.x = shift;
}
return dragEndTranslation;
}
private float getDistanceFromOtherSide() {
// Calculate the shift needed to position the bubble bar on the other side
int displayWidth = getResources().getDisplayMetrics().widthPixels;
int margin = 0;
if (getLayoutParams() instanceof MarginLayoutParams lp) {
margin += lp.leftMargin;
margin += lp.rightMargin;
}
return (float) (displayWidth - getWidth() - margin);
}
/**
* Animate bubble bar to the given location transiently. Does not modify the layout or the value
* returned by {@link #getBubbleBarLocation()}.
*/
public void animateToBubbleBarLocation(BubbleBarLocation bubbleBarLocation) {
if (mBubbleBarLocationAnimator != null && mBubbleBarLocationAnimator.isRunning()) {
mBubbleBarLocationAnimator.removeAllListeners();
mBubbleBarLocationAnimator.cancel();
}
// Location animation uses two separate animators.
// First animator hides the bar.
// After it completes, bubble positions in the bar and arrow position is updated.
// Second animator is started to show the bar.
mBubbleBarLocationAnimator = getLocationUpdateFadeOutAnimator(bubbleBarLocation);
mBubbleBarLocationAnimator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
updateChildrenRenderNodeProperties(bubbleBarLocation);
mBubbleBarBackground.setAnchorLeft(bubbleBarLocation.isOnLeft(isLayoutRtl()));
// Animate it in
mBubbleBarLocationAnimator = getLocationUpdateFadeInAnimator(bubbleBarLocation);
mBubbleBarLocationAnimator.start();
}
});
mBubbleBarLocationAnimator.start();
}
private Animator getLocationUpdateFadeOutAnimator(BubbleBarLocation bubbleBarLocation) {
final float shift =
getResources().getDisplayMetrics().widthPixels * FADE_OUT_ANIM_POSITION_SHIFT;
final boolean onLeft = bubbleBarLocation.isOnLeft(isLayoutRtl());
final float tx = getTranslationX() + (onLeft ? shift : -shift);
ObjectAnimator positionAnim = ObjectAnimator.ofFloat(this, TRANSLATION_X, tx)
.setDuration(FADE_OUT_ANIM_POSITION_DURATION_MS);
positionAnim.setInterpolator(EMPHASIZED_ACCELERATE);
ObjectAnimator alphaAnim = ObjectAnimator.ofFloat(this, ALPHA, 0f)
.setDuration(FADE_OUT_ANIM_ALPHA_DURATION_MS);
alphaAnim.setStartDelay(FADE_OUT_ANIM_ALPHA_DELAY_MS);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.playTogether(positionAnim, alphaAnim);
return animatorSet;
}
private Animator getLocationUpdateFadeInAnimator(BubbleBarLocation animatedLocation) {
final float shift =
getResources().getDisplayMetrics().widthPixels * FADE_IN_ANIM_POSITION_SHIFT;
final boolean onLeft = animatedLocation.isOnLeft(isLayoutRtl());
final float startTx;
final float finalTx;
if (animatedLocation == mBubbleBarLocation) {
// Animated location matches layout location.
finalTx = 0;
} else {
// We are animating in to a transient location, need to move the bar accordingly.
finalTx = getDistanceFromOtherSide() * (onLeft ? -1 : 1);
}
if (onLeft) {
// Bar will be shown on the left side. Start point is shifted right.
startTx = finalTx + shift;
} else {
// Bar will be shown on the right side. Start point is shifted left.
startTx = finalTx - shift;
}
ValueAnimator positionAnim = new SpringAnimationBuilder(getContext())
.setStartValue(startTx)
.setEndValue(finalTx)
.setDampingRatio(SpringForce.DAMPING_RATIO_LOW_BOUNCY)
.setStiffness(FADE_IN_ANIM_POSITION_SPRING_STIFFNESS)
.build(this, VIEW_TRANSLATE_X);
ObjectAnimator alphaAnim = ObjectAnimator.ofFloat(this, ALPHA, 1f)
.setDuration(FADE_IN_ANIM_ALPHA_DURATION_MS);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.playTogether(positionAnim, alphaAnim);
return animatorSet;
}
/**
* Updates the bounds with translation that may have been applied and returns the result.
*/
public Rect getBubbleBarBounds() {
mBubbleBarBounds.top = getTop() + (int) getTranslationY() + mPointerSize;
mBubbleBarBounds.bottom = getBottom() + (int) getTranslationY();
return mBubbleBarBounds;
}
/**
* Set bubble bar relative pivot value for X and Y, applied as a fraction of view width/height
* respectively. If the value is not in range of 0 to 1 it will be normalized.
* @param x relative X pivot value in range 0..1
* @param y relative Y pivot value in range 0..1
*/
public void setRelativePivot(float x, float y) {
mRelativePivotX = Float.max(Float.min(x, 1), 0);
mRelativePivotY = Float.max(Float.min(y, 1), 0);
requestLayout();
}
/** Like {@link #setRelativePivot(float, float)} but only updates pivot y. */
public void setRelativePivotY(float y) {
setRelativePivot(mRelativePivotX, y);
}
/**
* Get current relative pivot for X axis
*/
public float getRelativePivotX() {
return mRelativePivotX;
}
/**
* Get current relative pivot for Y axis
*/
public float getRelativePivotY() {
return mRelativePivotY;
}
/** Notifies the bubble bar that a new bubble animation is starting. */
public void onAnimatingBubbleStarted() {
mIsAnimatingNewBubble = true;
}
/** Notifies the bubble bar that a new bubble animation is complete. */
public void onAnimatingBubbleCompleted() {
mIsAnimatingNewBubble = false;
}
// TODO: (b/280605790) animate it
@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
if (getChildCount() + 1 > MAX_BUBBLES) {
// the last child view is the overflow bubble and we shouldn't remove that. remove the
// second to last child view.
removeViewInLayout(getChildAt(getChildCount() - 2));
}
super.addView(child, index, params);
updateWidth();
}
// TODO: (b/283309949) animate it
@Override
public void removeView(View view) {
super.removeView(view);
if (view == mSelectedBubbleView) {
mSelectedBubbleView = null;
mBubbleBarBackground.showArrow(false);
}
updateWidth();
}
private void updateWidth() {
LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
lp.width = (int) (mIsBarExpanded ? expandedWidth() : collapsedWidth());
setLayoutParams(lp);
}
private void updateLayoutParams() {
LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
lp.height = (int) getBubbleBarExpandedHeight();
lp.width = (int) (mIsBarExpanded ? expandedWidth() : collapsedWidth());
setLayoutParams(lp);
}
/** @return the horizontal margin between the bubble bar and the edge of the screen. */
int getHorizontalMargin() {
LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
return lp.getMarginEnd();
}
/**
* Updates the z order, positions, and badge visibility of the bubble views in the bar based
* on the expanded state.
*/
private void updateChildrenRenderNodeProperties(BubbleBarLocation bubbleBarLocation) {
final float widthState = (float) mWidthAnimator.getAnimatedValue();
final float currentWidth = getWidth();
final float expandedWidth = expandedWidth();
final float collapsedWidth = collapsedWidth();
int bubbleCount = getChildCount();
final float ty = (mBubbleBarBounds.height() - mIconSize) / 2f;
final boolean animate = getVisibility() == VISIBLE;
final boolean onLeft = bubbleBarLocation.isOnLeft(isLayoutRtl());
// elevation state is opposite to widthState - when expanded all icons are flat
float elevationState = (1 - widthState);
for (int i = 0; i < bubbleCount; i++) {
BubbleView bv = (BubbleView) getChildAt(i);
bv.setTranslationY(ty);
// the position of the bubble when the bar is fully expanded
final float expandedX;
// the position of the bubble when the bar is fully collapsed
final float collapsedX;
if (onLeft) {
// If bar is on the left, bubbles are ordered right to left
expandedX = (bubbleCount - i - 1) * (mIconSize + mExpandedBarIconsSpacing);
// Shift the first bubble only if there are more bubbles in addition to overflow
collapsedX = i == 0 && bubbleCount > 2 ? mIconOverlapAmount : 0;
} else {
// Bubbles ordered left to right, don't move the first bubble
expandedX = i * (mIconSize + mExpandedBarIconsSpacing);
collapsedX = i == 0 ? 0 : mIconOverlapAmount;
}
if (bv == mDraggedBubbleView) {
// if bubble is dragged set the elevation to bubble drag elevation
bv.setZ(mDragElevation);
} else {
// otherwise slowly animate elevation while keeping correct Z ordering
float fullElevationForChild = (MAX_BUBBLES * mBubbleElevation) - i;
bv.setZ(fullElevationForChild * elevationState);
}
if (mIsBarExpanded) {
// If bar is on the right, account for bubble bar expanding and shifting left
final float expandedBarShift = onLeft ? 0 : currentWidth - expandedWidth;
// where the bubble will end up when the animation ends
final float targetX = expandedX + expandedBarShift;
bv.setTranslationX(widthState * (targetX - collapsedX) + collapsedX);
// When we're expanded, we're not stacked so we're not behind the stack
bv.setBehindStack(false, animate);
bv.setAlpha(1);
} else {
// If bar is on the right, account for bubble bar expanding and shifting left
final float collapsedBarShift = onLeft ? 0 : currentWidth - collapsedWidth;
final float targetX = collapsedX + collapsedBarShift;
bv.setTranslationX(widthState * (expandedX - targetX) + targetX);
// If we're not the first bubble we're behind the stack
bv.setBehindStack(i > 0, animate);
// If we're fully collapsed, hide all bubbles except for the first 2. If there are
// only 2 bubbles, hide the second bubble as well because it's the overflow.
if (widthState == 0) {
if (i > 1) {
bv.setAlpha(0);
} else if (i == 1 && bubbleCount == 2) {
bv.setAlpha(0);
}
}
}
}
// update the arrow position
final float collapsedArrowPosition = arrowPositionForSelectedWhenCollapsed(
bubbleBarLocation);
final float expandedArrowPosition = arrowPositionForSelectedWhenExpanded(bubbleBarLocation);
final float interpolatedWidth =
widthState * (expandedWidth - collapsedWidth) + collapsedWidth;
final float arrowPosition;
float interpolatedShift = (expandedArrowPosition - collapsedArrowPosition) * widthState;
if (onLeft) {
arrowPosition = collapsedArrowPosition + interpolatedShift;
} else {
if (mIsBarExpanded) {
arrowPosition = currentWidth - interpolatedWidth + collapsedArrowPosition
+ interpolatedShift;
} else {
final float targetPosition = currentWidth - collapsedWidth + collapsedArrowPosition;
arrowPosition =
targetPosition + widthState * (expandedArrowPosition - targetPosition);
}
}
mBubbleBarBackground.setArrowPosition(arrowPosition);
mBubbleBarBackground.setArrowAlpha((int) (255 * widthState));
mBubbleBarBackground.setWidth(interpolatedWidth);
}
/**
* Reorders the views to match the provided list.
*/
public void reorder(List<BubbleView> viewOrder) {
if (isExpanded() || mWidthAnimator.isRunning()) {
mReorderRunnable = () -> doReorder(viewOrder);
} else {
doReorder(viewOrder);
}
}
// TODO: (b/273592694) animate it
private void doReorder(List<BubbleView> viewOrder) {
if (!isExpanded()) {
for (int i = 0; i < viewOrder.size(); i++) {
View child = viewOrder.get(i);
// this child view may have already been removed so verify that it still exists
// before reordering it, otherwise it will be re-added.
int indexOfChild = indexOfChild(child);
if (child != null && indexOfChild >= 0) {
removeViewInLayout(child);
addViewInLayout(child, i, child.getLayoutParams());
}
}
updateChildrenRenderNodeProperties(mBubbleBarLocation);
}
}
public void setUpdateSelectedBubbleAfterCollapse(
Consumer<String> updateSelectedBubbleAfterCollapse) {
mUpdateSelectedBubbleAfterCollapse = updateSelectedBubbleAfterCollapse;
}
/**
* Sets which bubble view should be shown as selected.
*/
public void setSelectedBubble(BubbleView view) {
BubbleView previouslySelectedBubble = mSelectedBubbleView;
mSelectedBubbleView = view;
mBubbleBarBackground.showArrow(view != null);
// TODO: (b/283309949) remove animation should be implemented first, so than arrow
// animation is adjusted, skip animation for now
updateArrowForSelected(previouslySelectedBubble != null);
}
/**
* Sets the dragged bubble view to correctly apply Z order. Dragged view should appear on top
*/
public void setDraggedBubble(@Nullable BubbleView view) {
mDraggedBubbleView = view;
requestLayout();
}
/**
* Update the arrow position to match the selected bubble.
*
* @param shouldAnimate whether or not to animate the arrow. If the bar was just expanded, this
* should be set to {@code false}. Otherwise set this to {@code true}.
*/
private void updateArrowForSelected(boolean shouldAnimate) {
if (mSelectedBubbleView == null) {
Log.w(TAG, "trying to update selection arrow without a selected view!");
return;
}
// Find the center of the bubble when it's expanded, set the arrow position to it.
final float tx = arrowPositionForSelectedWhenExpanded(mBubbleBarLocation);
final float currentArrowPosition = mBubbleBarBackground.getArrowPositionX();
if (tx == currentArrowPosition) {
// arrow position remains unchanged
return;
}
if (shouldAnimate && currentArrowPosition > expandedWidth()) {
Log.d(TAG, "arrow out of bounds of expanded view, skip animation");
shouldAnimate = false;
}
if (shouldAnimate) {
ValueAnimator animator = ValueAnimator.ofFloat(currentArrowPosition, tx);
animator.setDuration(ARROW_POSITION_ANIMATION_DURATION_MS);
animator.addUpdateListener(animation -> {
float x = (float) animation.getAnimatedValue();
mBubbleBarBackground.setArrowPosition(x);
invalidate();
});
animator.start();
} else {
mBubbleBarBackground.setArrowPosition(tx);
invalidate();
}
}
private float arrowPositionForSelectedWhenExpanded(BubbleBarLocation bubbleBarLocation) {
final int index = indexOfChild(mSelectedBubbleView);
final int bubblePosition;
if (bubbleBarLocation.isOnLeft(isLayoutRtl())) {
// Bubble positions are reversed. First bubble is on the right.
bubblePosition = getChildCount() - index - 1;
} else {
bubblePosition = index;
}
return getPaddingStart() + bubblePosition * (mIconSize + mExpandedBarIconsSpacing)
+ mIconSize / 2f;
}
private float arrowPositionForSelectedWhenCollapsed(BubbleBarLocation bubbleBarLocation) {
final int index = indexOfChild(mSelectedBubbleView);
final int bubblePosition;
if (bubbleBarLocation.isOnLeft(isLayoutRtl())) {
// Bubble positions are reversed. First bubble may be shifted, if there are more
// bubbles than the current bubble and overflow.
bubblePosition = index == 0 && getChildCount() > 2 ? 1 : 0;
} else {
bubblePosition = index;
}
return getPaddingStart() + bubblePosition * (mIconOverlapAmount) + mIconSize / 2f;
}
@Override
public void setOnClickListener(View.OnClickListener listener) {
mOnClickListener = listener;
setOrUnsetClickListener();
}
/**
* The click listener used for the bubble view gets added / removed depending on whether
* the bar is expanded or collapsed, this updates whether the listener is set based on state.
*/
private void setOrUnsetClickListener() {
super.setOnClickListener(mIsBarExpanded ? null : mOnClickListener);
}
/**
* Sets whether the bubble bar is expanded or collapsed.
*/
public void setExpanded(boolean isBarExpanded) {
if (mIsBarExpanded != isBarExpanded) {
mIsBarExpanded = isBarExpanded;
updateArrowForSelected(/* shouldAnimate= */ false);
setOrUnsetClickListener();
if (isBarExpanded) {
mWidthAnimator.start();
} else {
mWidthAnimator.reverse();
}
}
}
/**
* Returns whether the bubble bar is expanded.
*/
public boolean isExpanded() {
return mIsBarExpanded;
}
/**
* Get width of the bubble bar as if it would be expanded.
*
* @return width of the bubble bar in its expanded state, regardless of current width
*/
public float expandedWidth() {
final int childCount = getChildCount();
final int horizontalPadding = getPaddingStart() + getPaddingEnd();
// spaces amount is less than child count by 1, or 0 if no child views
int spacesCount = Math.max(childCount - 1, 0);
return childCount * mIconSize + spacesCount * mExpandedBarIconsSpacing + horizontalPadding;
}
private float collapsedWidth() {
final int childCount = getChildCount();
final int horizontalPadding = getPaddingStart() + getPaddingEnd();
// If there are more than 2 bubbles, the first 2 should be visible when collapsed.
// Otherwise just the first bubble should be visible because we don't show the overflow.
return childCount > 2
? mIconSize + mIconOverlapAmount + horizontalPadding
: mIconSize + horizontalPadding;
}
private float getBubbleBarExpandedHeight() {
return getBubbleBarCollapsedHeight() + mPointerSize;
}
float getBubbleBarCollapsedHeight() {
// the pointer is invisible when collapsed
return mIconSize + mBubbleBarPadding * 2;
}
/**
* Returns whether the given MotionEvent, *in screen coordinates*, is within bubble bar
* touch bounds.
*/
public boolean isEventOverAnyItem(MotionEvent ev) {
if (getVisibility() == View.VISIBLE) {
getBoundsOnScreen(mTempRect);
return mTempRect.contains((int) ev.getX(), (int) ev.getY());
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (!mIsBarExpanded && !mIsAnimatingNewBubble) {
// When the bar is collapsed, all taps on it should expand it.
return true;
}
return super.onInterceptTouchEvent(ev);
}
/** Whether a new bubble is currently animating. */
public boolean isAnimatingNewBubble() {
return mIsAnimatingNewBubble;
}
}