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Commit bed76e85 authored by Maryam Dehaini's avatar Maryam Dehaini
Browse files

Centering freeform window after transition 

Currently, when we drag a fullscreen window from the top to transition
it into a freeform window, the freeform bounds are set based on where we
release the window. This change animates it to the center instead.

Bug: 266973706
Test: Manual Testing
Change-Id: I1877ccbecbae51926e7dee413557417c5f5b5b5e
parent 2d830c75

libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/DesktopModeWindowDecorViewModel.java

+55 −19
Original line number Diff line number Diff line
@@ -26,16 +26,20 @@ import static com.android.wm.shell.desktopmode.EnterDesktopTaskTransitionHandler 
import static com.android.wm.shell.desktopmode.EnterDesktopTaskTransitionHandler.FINAL_FREEFORM_SCALE;

import static com.android.wm.shell.desktopmode.EnterDesktopTaskTransitionHandler.FREEFORM_ANIMATION_DURATION;



import android.animation.Animator;

import android.animation.AnimatorListenerAdapter;

import android.animation.ValueAnimator;

import android.app.ActivityManager;

import android.app.ActivityManager.RunningTaskInfo;

import android.app.ActivityTaskManager;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.Rect;

import android.hardware.input.InputManager;

import android.os.Handler;

import android.os.IBinder;

import android.os.Looper;

import android.util.DisplayMetrics;

import android.util.SparseArray;

import android.view.Choreographer;

import android.view.InputChannel;
@@ -541,9 +545,7 @@ public class DesktopModeWindowDecorViewModel implements WindowDecorViewModel { 
                    if (ev.getY() > statusBarHeight) {

                        if (DesktopModeStatus.isProto2Enabled()) {

                            mPauseRelayoutForTask = relevantDecor.mTaskInfo.taskId;

                            mDesktopTasksController.ifPresent(

                                    c -> c.moveToDesktopWithAnimation(relevantDecor.mTaskInfo,

                                            getFreeformBounds(ev)));

                            centerAndMoveToDesktopWithAnimation(relevantDecor, ev);

                        } else if (DesktopModeStatus.isProto1Enabled()) {

                            mDesktopModeController.ifPresent(c -> c.setDesktopModeActive(true));

                        }
@@ -596,23 +598,57 @@ public class DesktopModeWindowDecorViewModel implements WindowDecorViewModel { 
        }

    }



    private Rect getFreeformBounds(@NonNull MotionEvent ev) {

        final Rect endBounds = new Rect();

        final int finalWidth = (int) (FINAL_FREEFORM_SCALE

                * mDragToDesktopAnimationStartBounds.width());

        final int finalHeight = (int) (FINAL_FREEFORM_SCALE

                * mDragToDesktopAnimationStartBounds.height());

    /**

     * Gets bounds of a scaled window centered relative to the screen bounds

     * @param scale the amount to scale to relative to the Screen Bounds

     */

    private Rect calculateFreeformBounds(float scale) {

        final Resources resources = mContext.getResources();

        final DisplayMetrics metrics = resources.getDisplayMetrics();

        final int screenWidth = metrics.widthPixels;

        final int screenHeight = metrics.heightPixels;



        final float adjustmentPercentage = (1f - scale) / 2;

        final Rect endBounds = new Rect((int) (screenWidth * adjustmentPercentage),

                (int) (screenHeight * adjustmentPercentage),

                (int) (screenWidth * (adjustmentPercentage + scale)),

                (int) (screenHeight * (adjustmentPercentage + scale)));

        return endBounds;

    }



        endBounds.left = mDragToDesktopAnimationStartBounds.centerX() - finalWidth / 2

                + (int) (ev.getX() - mCaptionDragStartX);

        endBounds.right = endBounds.left + (int) (FINAL_FREEFORM_SCALE

                * mDragToDesktopAnimationStartBounds.width());

        endBounds.top = (int) (ev.getY()

                - ((FINAL_FREEFORM_SCALE - DRAG_FREEFORM_SCALE)

                * mDragToDesktopAnimationStartBounds.height() / 2));

        endBounds.bottom = endBounds.top + finalHeight;

    /**

     * Animates a window to the center, grows to freeform size, and transitions to Desktop Mode.

     * @param relevantDecor the window decor of the task to be animated

     * @param ev the motion event that triggers the animation

     */

    private void centerAndMoveToDesktopWithAnimation(DesktopModeWindowDecoration relevantDecor,

            MotionEvent ev) {

        ValueAnimator animator = ValueAnimator.ofFloat(0f, 1f);

        animator.setDuration(FREEFORM_ANIMATION_DURATION);

        final SurfaceControl sc = relevantDecor.mTaskSurface;

        final Rect endBounds = calculateFreeformBounds(DRAG_FREEFORM_SCALE);

        final Transaction t = mTransactionFactory.get();

        final float diffX = endBounds.centerX() - ev.getX();

        final float diffY = endBounds.top - ev.getY();

        final float startingX = ev.getX() - DRAG_FREEFORM_SCALE

                * mDragToDesktopAnimationStartBounds.width() / 2;



        return endBounds;

        animator.addUpdateListener(animation -> {

            final float animatorValue = (float) animation.getAnimatedValue();

            final float x = startingX + diffX * animatorValue;

            final float y = ev.getY() + diffY * animatorValue;

            t.setPosition(sc, x, y);

            t.apply();

        });

        animator.addListener(new AnimatorListenerAdapter() {

            @Override

            public void onAnimationEnd(Animator animation) {

                mDesktopTasksController.ifPresent(

                        c -> c.moveToDesktopWithAnimation(relevantDecor.mTaskInfo,

                                calculateFreeformBounds(FINAL_FREEFORM_SCALE)));

            }

        });

        animator.start();

    }



    private void startAnimation(@NonNull DesktopModeWindowDecoration focusedDecor) {