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Commit b3665f17 authored by Vladislav Kaznacheev's avatar Vladislav Kaznacheev
Browse files

Make "Drag failed" animation comply with Material Design 

Adjust the duration to the travel distance (linearly between
195ms and 375ms).

Bug: 33000192
Test: manual
Change-Id: Idc827290b89a7c7a4c7b6c64edf4aaa4ac3f33e3
parent 76feb115

services/core/java/com/android/server/wm/DragState.java

+17 −9
Original line number Diff line number Diff line
@@ -68,7 +68,8 @@ import java.util.ArrayList; 
 * Drag/drop state

 */

class DragState {

    private static final long ANIMATION_DURATION_MS = 500;

    private static final long MIN_ANIMATION_DURATION_MS = 195;

    private static final long MAX_ANIMATION_DURATION_MS = 375;



    private static final int DRAG_FLAGS_URI_ACCESS = View.DRAG_FLAG_GLOBAL_URI_READ |

            View.DRAG_FLAG_GLOBAL_URI_WRITE;
@@ -103,6 +104,7 @@ class DragState { 
    private Animation mAnimation;

    final Transformation mTransformation = new Transformation();

    private final Interpolator mCubicEaseOutInterpolator = new DecelerateInterpolator(1.5f);

    private Point mDisplaySize = new Point();



    DragState(WindowManagerService service, IBinder token, SurfaceControl surface,

            int flags, IBinder localWin) {
@@ -171,10 +173,8 @@ class DragState { 
            // The drag window covers the entire display

            mDragWindowHandle.frameLeft = 0;

            mDragWindowHandle.frameTop = 0;

            Point p = new Point();

            display.getRealSize(p);

            mDragWindowHandle.frameRight = p.x;

            mDragWindowHandle.frameBottom = p.y;

            mDragWindowHandle.frameRight = mDisplaySize.x;

            mDragWindowHandle.frameBottom = mDisplaySize.y;



            // Pause rotations before a drag.

            if (DEBUG_ORIENTATION) {
@@ -215,6 +215,7 @@ class DragState { 
     * @param display The Display that the window being dragged is on.

     */

    void register(Display display) {

        display.getRealSize(mDisplaySize);

        if (DEBUG_DRAG) Slog.d(TAG_WM, "registering drag input channel");

        if (mInputInterceptor != null) {

            Slog.e(TAG_WM, "Duplicate register of drag input channel");
@@ -583,10 +584,17 @@ class DragState { 


    private Animation createReturnAnimationLocked() {

        final AnimationSet set = new AnimationSet(false);

        set.addAnimation(new TranslateAnimation(

                0, mOriginalX - mCurrentX, 0, mOriginalY - mCurrentY));

        final float translateX = mOriginalX - mCurrentX;

        final float translateY = mOriginalY - mCurrentY;

        set.addAnimation(new TranslateAnimation( 0, translateX, 0, translateY));

        set.addAnimation(new AlphaAnimation(mOriginalAlpha, mOriginalAlpha / 2));

        set.setDuration(ANIMATION_DURATION_MS);

        // Adjust the duration to the travel distance.

        final double travelDistance = Math.sqrt(translateX * translateX + translateY * translateY);

        final double displayDiagonal =

                Math.sqrt(mDisplaySize.x * mDisplaySize.x + mDisplaySize.y * mDisplaySize.y);

        final long duration = MIN_ANIMATION_DURATION_MS + (long) (travelDistance / displayDiagonal

                * (MAX_ANIMATION_DURATION_MS - MIN_ANIMATION_DURATION_MS));

        set.setDuration(duration);

        set.setInterpolator(mCubicEaseOutInterpolator);

        set.initialize(0, 0, 0, 0);

        set.start();  // Will start on the first call to getTransformation.
@@ -597,7 +605,7 @@ class DragState { 
        final AnimationSet set = new AnimationSet(false);

        set.addAnimation(new ScaleAnimation(1, 0, 1, 0, mThumbOffsetX, mThumbOffsetY));

        set.addAnimation(new AlphaAnimation(mOriginalAlpha, 0));

        set.setDuration(ANIMATION_DURATION_MS);

        set.setDuration(MIN_ANIMATION_DURATION_MS);

        set.setInterpolator(mCubicEaseOutInterpolator);

        set.initialize(0, 0, 0, 0);

        set.start();  // Will start on the first call to getTransformation.