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/*
* Copyright (C) 2019 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.views;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import static com.android.launcher3.config.FeatureFlags.ADAPTIVE_ICON_WINDOW_ANIM;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Outline;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.AdaptiveIconDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewOutlineProvider;
import android.widget.ImageView;
import com.android.launcher3.BubbleTextView;
import com.android.launcher3.InsettableFrameLayout.LayoutParams;
import com.android.launcher3.ItemInfo;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherModel;
import com.android.launcher3.R;
import com.android.launcher3.Utilities;
import com.android.launcher3.dragndrop.DragLayer;
import com.android.launcher3.dragndrop.FolderAdaptiveIcon;
import com.android.launcher3.folder.FolderIcon;
import com.android.launcher3.folder.FolderShape;
import com.android.launcher3.graphics.ShiftedBitmapDrawable;
import com.android.launcher3.icons.LauncherIcons;
import com.android.launcher3.popup.SystemShortcut;
import com.android.launcher3.shortcuts.DeepShortcutView;
import androidx.annotation.Nullable;
import androidx.annotation.WorkerThread;
import static com.android.launcher3.Utilities.mapToRange;
/**
* A view that is created to look like another view with the purpose of creating fluid animations.
*/
public class FloatingIconView extends View implements Animator.AnimatorListener, ClipPathView {
public static final float SHAPE_PROGRESS_DURATION = 0.15f;
private static final Rect sTmpRect = new Rect();
private Runnable mEndRunnable;
private final int mBlurSizeOutline;
private boolean mIsAdaptiveIcon = false;
private @Nullable Drawable mForeground;
private @Nullable Drawable mBackground;
private ValueAnimator mRevealAnimator;
private final Rect mStartRevealRect = new Rect();
private final Rect mEndRevealRect = new Rect();
private Path mClipPath;
private float mTaskCornerRadius;
private final Rect mFinalDrawableBounds = new Rect();
private final Rect mBgDrawableBounds = new Rect();
private float mBgDrawableStartScale = 1f;
private float mBgDrawableEndScale = 1f;
private FloatingIconView(Context context) {
super(context);
mBlurSizeOutline = context.getResources().getDimensionPixelSize(
R.dimen.blur_size_medium_outline);
}
/**
* Positions this view to match the size and location of {@param rect}.
* @param alpha The alpha to set this view.
* @param progress A value from [0, 1] that represents the animation progress.
* @param shapeProgressStart The progress value at which to start the shape reveal.
* @param cornerRadius The corner radius of {@param rect}.
*/
public void update(RectF rect, float alpha, float progress, float shapeProgressStart,
float cornerRadius, boolean isOpening) {
setAlpha(alpha);
LayoutParams lp = (LayoutParams) getLayoutParams();
float dX = rect.left - lp.leftMargin;
float dY = rect.top - lp.topMargin;
setTranslationX(dX);
setTranslationY(dY);
float scaleX = rect.width() / (float) lp.width;
float scaleY = rect.height() / (float) lp.height;
float scale = mIsAdaptiveIcon && !isOpening ? Math.max(scaleX, scaleY)
: Math.min(scaleX, scaleY);
scale = Math.max(1f, scale);
setPivotX(0);
setPivotY(0);
setScaleX(scale);
setScaleY(scale);
// shapeRevealProgress = 1 when progress = shapeProgressStart + SHAPE_PROGRESS_DURATION
float toMax = isOpening ? 1 / SHAPE_PROGRESS_DURATION : 1f;
float shapeRevealProgress = Utilities.boundToRange(mapToRange(
Math.max(shapeProgressStart, progress), shapeProgressStart, 1f, 0, toMax,
LINEAR), 0, 1);
mTaskCornerRadius = cornerRadius;
if (mIsAdaptiveIcon && shapeRevealProgress >= 0) {
if (mRevealAnimator == null) {
mRevealAnimator = (ValueAnimator) FolderShape.getShape().createRevealAnimator(this,
mStartRevealRect, mEndRevealRect, mTaskCornerRadius / scale, !isOpening);
mRevealAnimator.start();
// We pause here so we can set the current fraction ourselves.
mRevealAnimator.pause();
}
mRevealAnimator.setCurrentFraction(shapeRevealProgress);
float bgScale = (mBgDrawableEndScale * shapeRevealProgress) + mBgDrawableStartScale
* (1 - shapeRevealProgress);
setBackgroundDrawableBounds(bgScale);
}
invalidate();
invalidateOutline();
}
@Override
public void onAnimationEnd(Animator animator) {
if (mEndRunnable != null) {
mEndRunnable.run();
} else {
// End runnable also ends the reveal animator, so we manually handle it here.
if (mRevealAnimator != null) {
mRevealAnimator.end();
}
}
}
/**
* Sets the size and position of this view to match {@param v}.
*
* @param v The view to copy
* @param positionOut Rect that will hold the size and position of v.
*/
private void matchPositionOf(Launcher launcher, View v, Rect positionOut) {
Utilities.getLocationBoundsForView(launcher, v, positionOut);
final LayoutParams lp = new LayoutParams(positionOut.width(), positionOut.height());
lp.ignoreInsets = true;
// Position the floating view exactly on top of the original
lp.leftMargin = positionOut.left;
lp.topMargin = positionOut.top;
setLayoutParams(lp);
// Set the properties here already to make sure they are available when running the first
// animation frame.
layout(lp.leftMargin, lp.topMargin, lp.leftMargin + lp.width, lp.topMargin
+ lp.height);
}
@WorkerThread
private void getIcon(Launcher launcher, View v, ItemInfo info, boolean isOpening,
Runnable onIconLoadedRunnable) {
final LayoutParams lp = (LayoutParams) getLayoutParams();
Drawable drawable = null;
boolean supportsAdaptiveIcons = ADAPTIVE_ICON_WINDOW_ANIM.get()
&& Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
if (!supportsAdaptiveIcons && v instanceof BubbleTextView) {
// Similar to DragView, we simply use the BubbleTextView icon here.
drawable = ((BubbleTextView) v).getIcon();
}
if (info instanceof SystemShortcut) {
if (v instanceof ImageView) {
drawable = ((ImageView) v).getDrawable();
} else if (v instanceof DeepShortcutView) {
drawable = ((DeepShortcutView) v).getIconView().getBackground();
} else {
drawable = v.getBackground();
}
}
if (drawable == null) {
drawable = Utilities.getFullDrawable(launcher, info, lp.width, lp.height,
false, new Object[1]);
}
Drawable finalDrawable = drawable == null ? null
: drawable.getConstantState().newDrawable();
boolean isAdaptiveIcon = supportsAdaptiveIcons
&& finalDrawable instanceof AdaptiveIconDrawable;
int iconOffset = getOffsetForIconBounds(finalDrawable);
new Handler(Looper.getMainLooper()).post(() -> {
if (isAdaptiveIcon) {
mIsAdaptiveIcon = true;
boolean isFolderIcon = finalDrawable instanceof FolderAdaptiveIcon;
AdaptiveIconDrawable adaptiveIcon = (AdaptiveIconDrawable) finalDrawable;
Drawable background = adaptiveIcon.getBackground();
if (background == null) {
background = new ColorDrawable(Color.TRANSPARENT);
}
mBackground = background;
Drawable foreground = adaptiveIcon.getForeground();
if (foreground == null) {
foreground = new ColorDrawable(Color.TRANSPARENT);
}
mForeground = foreground;
if (mForeground instanceof ShiftedBitmapDrawable && v instanceof FolderIcon) {
ShiftedBitmapDrawable sbd = (ShiftedBitmapDrawable) mForeground;
((FolderIcon) v).getPreviewBounds(sTmpRect);
sbd.setShiftX(sbd.getShiftX() - sTmpRect.left);
sbd.setShiftY(sbd.getShiftY() - sTmpRect.top);
}
final int originalHeight = lp.height;
final int originalWidth = lp.width;
int blurMargin = mBlurSizeOutline / 2;
mFinalDrawableBounds.set(0, 0, originalWidth, originalHeight);
if (!isFolderIcon) {
mFinalDrawableBounds.inset(iconOffset - blurMargin, iconOffset - blurMargin);
}
mForeground.setBounds(mFinalDrawableBounds);
mBackground.setBounds(mFinalDrawableBounds);
mStartRevealRect.set(0, 0, originalWidth, originalHeight);
if (!isFolderIcon) {
mStartRevealRect.inset(mBlurSizeOutline, mBlurSizeOutline);
}
float aspectRatio = launcher.getDeviceProfile().aspectRatio;
if (launcher.getDeviceProfile().isVerticalBarLayout()) {
lp.width = (int) Math.max(lp.width, lp.height * aspectRatio);
} else {
lp.height = (int) Math.max(lp.height, lp.width * aspectRatio);
}
layout(lp.leftMargin, lp.topMargin, lp.leftMargin + lp.width, lp.topMargin
+ lp.height);
Rect rectOutline = new Rect();
float scale = Math.max((float) lp.height / originalHeight,
(float) lp.width / originalWidth);
if (isOpening) {
mBgDrawableStartScale = 1f;
mBgDrawableEndScale = scale;
rectOutline.set(0, 0, originalWidth, originalHeight);
} else {
mBgDrawableStartScale = scale;
mBgDrawableEndScale = 1f;
rectOutline.set(0, 0, lp.width, lp.height);
}
mEndRevealRect.set(0, 0, lp.width, lp.height);
setBackgroundDrawableBounds(mBgDrawableStartScale);
setOutlineProvider(new ViewOutlineProvider() {
@Override
public void getOutline(View view, Outline outline) {
outline.setRoundRect(rectOutline, mTaskCornerRadius);
}
});
setClipToOutline(true);
} else {
setBackground(finalDrawable);
}
onIconLoadedRunnable.run();
invalidate();
invalidateOutline();
});
}
private void setBackgroundDrawableBounds(float scale) {
mBgDrawableBounds.set(mFinalDrawableBounds);
Utilities.scaleRectAboutCenter(mBgDrawableBounds, scale);
// Since the drawable is at the top of the view, we need to offset to keep it centered.
mBgDrawableBounds.offsetTo(mBgDrawableBounds.left,
(int) (mFinalDrawableBounds.top * scale));
mBackground.setBounds(mBgDrawableBounds);
}
@WorkerThread
private int getOffsetForIconBounds(Drawable drawable) {
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.O ||
!(drawable instanceof AdaptiveIconDrawable)) {
return 0;
}
final LayoutParams lp = (LayoutParams) getLayoutParams();
Rect bounds = new Rect(0, 0, lp.width + mBlurSizeOutline, lp.height + mBlurSizeOutline);
bounds.inset(mBlurSizeOutline / 2, mBlurSizeOutline / 2);
try (LauncherIcons li = LauncherIcons.obtain(Launcher.fromContext(getContext()))) {
Utilities.scaleRectAboutCenter(bounds, li.getNormalizer().getScale(drawable, null));
}
bounds.inset(
(int) (-bounds.width() * AdaptiveIconDrawable.getExtraInsetFraction()),
(int) (-bounds.height() * AdaptiveIconDrawable.getExtraInsetFraction())
);
return bounds.left;
}
@Override
public void setClipPath(Path clipPath) {
mClipPath = clipPath;
invalidate();
}
private void drawAdaptiveIconIfExists(Canvas canvas) {
if (mBackground != null) {
mBackground.draw(canvas);
}
if (mForeground != null) {
mForeground.draw(canvas);
}
}
@Override
public void draw(Canvas canvas) {
if (mClipPath == null) {
super.draw(canvas);
drawAdaptiveIconIfExists(canvas);
} else {
int count = canvas.save();
canvas.clipPath(mClipPath);
super.draw(canvas);
drawAdaptiveIconIfExists(canvas);
canvas.restoreToCount(count);
}
}
@Override
public void onAnimationStart(Animator animator) {}
@Override
public void onAnimationCancel(Animator animator) {}
@Override
public void onAnimationRepeat(Animator animator) {}
/**
* Creates a floating icon view for {@param originalView}.
* @param originalView The view to copy
* @param hideOriginal If true, it will hide {@param originalView} while this view is visible.
* @param positionOut Rect that will hold the size and position of v.
* @param isOpening True if this view replaces the icon for app open animation.
*/
public static FloatingIconView getFloatingIconView(Launcher launcher, View originalView,
boolean hideOriginal, Rect positionOut, boolean isOpening, FloatingIconView recycle) {
if (recycle != null) {
recycle.recycle();
}
FloatingIconView view = recycle != null ? recycle : new FloatingIconView(launcher);
// Match the position of the original view.
view.matchPositionOf(launcher, originalView, positionOut);
// Get the drawable on the background thread
// Must be called after matchPositionOf so that we know what size to load.
if (originalView.getTag() instanceof ItemInfo) {
Runnable onIconLoaded = () -> {
// Delay swapping views until the icon is loaded to prevent a flash.
view.setVisibility(VISIBLE);
if (hideOriginal) {
originalView.setVisibility(INVISIBLE);
}
};
new Handler(LauncherModel.getWorkerLooper()).postAtFrontOfQueue(() -> {
view.getIcon(launcher, originalView, (ItemInfo) originalView.getTag(), isOpening,
onIconLoaded);
});
}
// We need to add it to the overlay, but keep it invisible until animation starts..
final DragLayer dragLayer = launcher.getDragLayer();
view.setVisibility(INVISIBLE);
((ViewGroup) dragLayer.getParent()).getOverlay().add(view);
if (hideOriginal) {
view.mEndRunnable = () -> {
AnimatorSet fade = new AnimatorSet();
fade.setDuration(200);
fade.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
originalView.setVisibility(VISIBLE);
if (originalView instanceof FolderIcon) {
FolderIcon folderIcon = (FolderIcon) originalView;
folderIcon.setBackgroundVisible(false);
folderIcon.getFolderName().setTextVisibility(false);
}
}
@Override
public void onAnimationEnd(Animator animation) {
((ViewGroup) dragLayer.getParent()).getOverlay().remove(view);
if (view.mRevealAnimator != null) {
view.mRevealAnimator.end();
}
}
});
if (originalView instanceof FolderIcon) {
FolderIcon folderIcon = (FolderIcon) originalView;
fade.play(folderIcon.getFolderName().createTextAlphaAnimator(true));
fade.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
folderIcon.setBackgroundVisible(true);
folderIcon.animateBgShadowAndStroke();
if (folderIcon.hasDot()) {
folderIcon.animateDotScale(0, 1f);
}
}
});
} else {
fade.play(ObjectAnimator.ofFloat(originalView, ALPHA, 0f, 1f));
}
fade.start();
// TODO: Do not run fade animation until we fix b/129421279.
fade.end();
};
}
return view;
}
private void recycle() {
setTranslationX(0);
setTranslationY(0);
setScaleX(1);
setScaleY(1);
setAlpha(1);
setBackground(null);
mEndRunnable = null;
mIsAdaptiveIcon = false;
mForeground = null;
mBackground = null;
mClipPath = null;
mFinalDrawableBounds.setEmpty();
mBgDrawableBounds.setEmpty();;
if (mRevealAnimator != null) {
mRevealAnimator.cancel();
}
mRevealAnimator = null;
}
}
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