private void animateLoad() {
setTranslationY(500);
setAlpha(0);
final Animator translateAnimator = ObjectAnimator.ofFloat(this, "translationY", 0);
translateAnimator.setDuration(400);
final Animator alphaAnimator = ObjectAnimator.ofFloat(this, "alpha", 1);
alphaAnimator.setStartDelay(200);
alphaAnimator.setDuration(600);
final AnimatorSet set = new AnimatorSet();
set.playTogether(alphaAnimator, translateAnimator);
set.setStartDelay(400);
set.start();
}
public void animateOpen() {
if (!(getParent() instanceof DragLayer)) return;
Animator openFolderAnim = null;
final Runnable onCompleteRunnable;
if (!Utilities.isLmpOrAbove()) {
positionAndSizeAsIcon();
centerAboutIcon();
PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 1);
PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f);
PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f);
final ObjectAnimator oa =
LauncherAnimUtils.ofPropertyValuesHolder(this, alpha, scaleX, scaleY);
oa.setDuration(mExpandDuration);
openFolderAnim = oa;
setLayerType(LAYER_TYPE_HARDWARE, null);
onCompleteRunnable =
new Runnable() {
@Override
public void run() {
setLayerType(LAYER_TYPE_NONE, null);
}
};
} else {
prepareReveal();
centerAboutIcon();
int width = getPaddingLeft() + getPaddingRight() + mContent.getDesiredWidth();
int height = getFolderHeight();
float transX = -0.075f * (width / 2 - getPivotX());
float transY = -0.075f * (height / 2 - getPivotY());
setTranslationX(transX);
setTranslationY(transY);
PropertyValuesHolder tx = PropertyValuesHolder.ofFloat("translationX", transX, 0);
PropertyValuesHolder ty = PropertyValuesHolder.ofFloat("translationY", transY, 0);
int rx = (int) Math.max(Math.max(width - getPivotX(), 0), getPivotX());
int ry = (int) Math.max(Math.max(height - getPivotY(), 0), getPivotY());
float radius = (float) Math.sqrt(rx * rx + ry * ry);
AnimatorSet anim = LauncherAnimUtils.createAnimatorSet();
Animator reveal =
LauncherAnimUtils.createCircularReveal(
this, (int) getPivotX(), (int) getPivotY(), 0, radius);
reveal.setDuration(mMaterialExpandDuration);
reveal.setInterpolator(new LogDecelerateInterpolator(100, 0));
mContent.setAlpha(0f);
Animator iconsAlpha = LauncherAnimUtils.ofFloat(mContent, "alpha", 0f, 1f);
iconsAlpha.setDuration(mMaterialExpandDuration);
iconsAlpha.setStartDelay(mMaterialExpandStagger);
iconsAlpha.setInterpolator(new AccelerateInterpolator(1.5f));
mFolderName.setAlpha(0f);
Animator textAlpha = LauncherAnimUtils.ofFloat(mFolderName, "alpha", 0f, 1f);
textAlpha.setDuration(mMaterialExpandDuration);
textAlpha.setStartDelay(mMaterialExpandStagger);
textAlpha.setInterpolator(new AccelerateInterpolator(1.5f));
Animator drift = LauncherAnimUtils.ofPropertyValuesHolder(this, tx, ty);
drift.setDuration(mMaterialExpandDuration);
drift.setStartDelay(mMaterialExpandStagger);
drift.setInterpolator(new LogDecelerateInterpolator(60, 0));
anim.play(drift);
anim.play(iconsAlpha);
anim.play(textAlpha);
anim.play(reveal);
openFolderAnim = anim;
mContent.setLayerType(LAYER_TYPE_HARDWARE, null);
onCompleteRunnable =
new Runnable() {
@Override
public void run() {
mContent.setLayerType(LAYER_TYPE_NONE, null);
}
};
}
openFolderAnim.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
sendCustomAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED,
String.format(
getContext().getString(R.string.folder_opened),
mContent.getCountX(),
mContent.getCountY()));
mState = STATE_ANIMATING;
}
@Override
public void onAnimationEnd(Animator animation) {
mState = STATE_OPEN;
if (onCompleteRunnable != null) {
onCompleteRunnable.run();
}
setFocusOnFirstChild();
}
});
openFolderAnim.start();
// Make sure the folder picks up the last drag move even if the finger doesn't move.
if (mDragController.isDragging()) {
mDragController.forceTouchMove();
}
}
@Override
public Animator createAnimator(
final ViewGroup sceneRoot,
final TransitionValues startValues,
final TransitionValues endValues) {
if (startValues == null || endValues == null) return null;
final Rect startBounds = (Rect) startValues.values.get(PROP_BOUNDS);
final Rect endBounds = (Rect) endValues.values.get(PROP_BOUNDS);
final boolean fromFab = endBounds.width() > startBounds.width();
final View view = endValues.view;
final Rect dialogBounds = fromFab ? endBounds : startBounds;
final Rect fabBounds = fromFab ? startBounds : endBounds;
final Interpolator fastOutSlowInInterpolator =
AnimUtils.getFastOutSlowInInterpolator(sceneRoot.getContext());
final long duration = getDuration();
final long halfDuration = duration / 2;
final long twoThirdsDuration = duration * 2 / 3;
if (!fromFab) {
// Force measure / layout the dialog back to it's original bounds
view.measure(
makeMeasureSpec(startBounds.width(), View.MeasureSpec.EXACTLY),
makeMeasureSpec(startBounds.height(), View.MeasureSpec.EXACTLY));
view.layout(startBounds.left, startBounds.top, startBounds.right, startBounds.bottom);
}
final int translationX = startBounds.centerX() - endBounds.centerX();
final int translationY = startBounds.centerY() - endBounds.centerY();
if (fromFab) {
view.setTranslationX(translationX);
view.setTranslationY(translationY);
}
// Add a color overlay to fake appearance of the FAB
final ColorDrawable fabColor = new ColorDrawable(color);
fabColor.setBounds(0, 0, dialogBounds.width(), dialogBounds.height());
if (!fromFab) fabColor.setAlpha(0);
view.getOverlay().add(fabColor);
// Add an icon overlay again to fake the appearance of the FAB
final Drawable fabIcon = ContextCompat.getDrawable(sceneRoot.getContext(), icon).mutate();
final int iconLeft = (dialogBounds.width() - fabIcon.getIntrinsicWidth()) / 2;
final int iconTop = (dialogBounds.height() - fabIcon.getIntrinsicHeight()) / 2;
fabIcon.setBounds(
iconLeft,
iconTop,
iconLeft + fabIcon.getIntrinsicWidth(),
iconTop + fabIcon.getIntrinsicHeight());
if (!fromFab) fabIcon.setAlpha(0);
view.getOverlay().add(fabIcon);
// Circular clip from/to the FAB size
final Animator circularReveal;
if (fromFab) {
circularReveal =
ViewAnimationUtils.createCircularReveal(
view,
view.getWidth() / 2,
view.getHeight() / 2,
startBounds.width() / 2,
(float) Math.hypot(endBounds.width() / 2, endBounds.height() / 2));
circularReveal.setInterpolator(
AnimUtils.getFastOutLinearInInterpolator(sceneRoot.getContext()));
} else {
circularReveal =
ViewAnimationUtils.createCircularReveal(
view,
view.getWidth() / 2,
view.getHeight() / 2,
(float) Math.hypot(startBounds.width() / 2, startBounds.height() / 2),
endBounds.width() / 2);
circularReveal.setInterpolator(
AnimUtils.getLinearOutSlowInInterpolator(sceneRoot.getContext()));
// Persist the end clip i.e. stay at FAB size after the reveal has run
circularReveal.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
view.setOutlineProvider(
new ViewOutlineProvider() {
@Override
public void getOutline(View view, Outline outline) {
final int left = (view.getWidth() - fabBounds.width()) / 2;
final int top = (view.getHeight() - fabBounds.height()) / 2;
outline.setOval(
left, top, left + fabBounds.width(), top + fabBounds.height());
view.setClipToOutline(true);
}
});
}
});
}
circularReveal.setDuration(duration);
// Translate to end position along an arc
final Animator translate =
ObjectAnimator.ofFloat(
view,
View.TRANSLATION_X,
View.TRANSLATION_Y,
fromFab
? getPathMotion().getPath(translationX, translationY, 0, 0)
: getPathMotion().getPath(0, 0, -translationX, -translationY));
translate.setDuration(duration);
translate.setInterpolator(fastOutSlowInInterpolator);
// Fade contents of non-FAB view in/out
List<Animator> fadeContents = null;
if (view instanceof ViewGroup) {
final ViewGroup vg = ((ViewGroup) view);
fadeContents = new ArrayList<>(vg.getChildCount());
for (int i = vg.getChildCount() - 1; i >= 0; i--) {
final View child = vg.getChildAt(i);
final Animator fade = ObjectAnimator.ofFloat(child, View.ALPHA, fromFab ? 1f : 0f);
if (fromFab) {
child.setAlpha(0f);
}
fade.setDuration(twoThirdsDuration);
fade.setInterpolator(fastOutSlowInInterpolator);
fadeContents.add(fade);
}
}
// Fade in/out the fab color & icon overlays
final Animator colorFade = ObjectAnimator.ofInt(fabColor, "alpha", fromFab ? 0 : 255);
final Animator iconFade = ObjectAnimator.ofInt(fabIcon, "alpha", fromFab ? 0 : 255);
if (!fromFab) {
colorFade.setStartDelay(halfDuration);
iconFade.setStartDelay(halfDuration);
}
colorFade.setDuration(halfDuration);
iconFade.setDuration(halfDuration);
colorFade.setInterpolator(fastOutSlowInInterpolator);
iconFade.setInterpolator(fastOutSlowInInterpolator);
// Work around issue with elevation shadows. At the end of the return transition the shared
// element's shadow is drawn twice (by each activity) which is jarring. This workaround
// still causes the shadow to snap, but it's better than seeing it double drawn.
Animator elevation = null;
if (!fromFab) {
elevation = ObjectAnimator.ofFloat(view, View.TRANSLATION_Z, -view.getElevation());
elevation.setDuration(duration);
elevation.setInterpolator(fastOutSlowInInterpolator);
}
// Run all animations together
final AnimatorSet transition = new AnimatorSet();
transition.playTogether(circularReveal, translate, colorFade, iconFade);
transition.playTogether(fadeContents);
if (elevation != null) transition.play(elevation);
if (fromFab) {
transition.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
// Clean up
view.getOverlay().clear();
}
});
}
return new AnimUtils.NoPauseAnimator(transition);
}