Remove grid scaling in Overveiw

- Grid scaling has problem that scales task icon and menu, which makes it hard to control icon size and text size in the manula
- Replaced the whole concept with dedicated Task size calculation in grid layout
- Support different icon size in TaskView in grid and removed task_thumbnail_top_margin
- Removed grid progress in TaskViewSimulator as well
- Refactored how ClearAllButton scroll and translations are calcualted to align clear all properly in grid
- Make page center calculation aware of PagedView pivot and scaling

Bug: 174464863
Test: Manual on two screens
Change-Id: I47b13ef6e55c6e16c52ea04225f5bde02ed82fc2

src/com/android/launcher3/DeviceProfile.java

@@ -152,8 +152,9 @@ public class DeviceProfile {
     public float allAppsIconTextSizePx;
 
     // Overview
-    public int overviewTaskThumbnailTopMarginPx;
     public int overviewTaskMarginPx;
+    public int overviewTaskIconSizePx;
+    public int overviewTaskThumbnailTopMarginPx;
 
     // Widgets
     public final PointF appWidgetScale = new PointF(1.0f, 1.0f);
@@ -301,10 +302,12 @@ public class DeviceProfile {
                 : (hotseatBarTopPaddingPx + hotseatBarBottomPaddingPx
                         + (isScalableGrid ? 0 : hotseatExtraVerticalSize)));
 
-
         overviewTaskMarginPx = res.getDimensionPixelSize(R.dimen.overview_task_margin);
-        overviewTaskThumbnailTopMarginPx = res.getDimensionPixelSize(
-                R.dimen.task_thumbnail_icon_size) + 2 * overviewTaskMarginPx;
+        overviewTaskIconSizePx =
+                isTablet && FeatureFlags.ENABLE_OVERVIEW_GRID.get() ? res.getDimensionPixelSize(
+                        R.dimen.task_thumbnail_icon_size_grid) : res.getDimensionPixelSize(
+                        R.dimen.task_thumbnail_icon_size);
+        overviewTaskThumbnailTopMarginPx = overviewTaskIconSizePx + overviewTaskMarginPx * 2;
 
         // Calculate all of the remaining variables.
         extraSpace = updateAvailableDimensions(res);

src/com/android/launcher3/PagedView.java

@@ -1512,17 +1512,16 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
         return getDestinationPage(mOrientationHandler.getPrimaryScroll(this));
     }
 
-    protected int getDestinationPage(int scaledScroll) {
-        return getPageNearestToCenterOfScreen(scaledScroll);
+    protected int getDestinationPage(int primaryScroll) {
+        return getPageNearestToCenterOfScreen(primaryScroll);
     }
 
     public int getPageNearestToCenterOfScreen() {
         return getPageNearestToCenterOfScreen(mOrientationHandler.getPrimaryScroll(this));
     }
 
-    private int getPageNearestToCenterOfScreen(int scaledScroll) {
-        int pageOrientationSize = mOrientationHandler.getMeasuredSize(this);
-        int screenCenter = scaledScroll + (pageOrientationSize / 2);
+    private int getPageNearestToCenterOfScreen(int primaryScroll) {
+        int screenCenter = getScreenCenter(primaryScroll);
         int minDistanceFromScreenCenter = Integer.MAX_VALUE;
         int minDistanceFromScreenCenterIndex = -1;
         final int childCount = getChildCount();
@@ -1538,18 +1537,26 @@ public abstract class PagedView<T extends View & PageIndicator> extends ViewGrou
     }
 
     private int getDisplacementFromScreenCenter(int childIndex, int screenCenter) {
-        int childSize = getChildVisibleSize(childIndex);
+        int childSize = Math.round(getChildVisibleSize(childIndex));
         int halfChildSize = (childSize / 2);
         int childCenter = getChildOffset(childIndex) + halfChildSize;
         return childCenter - screenCenter;
     }
 
     protected int getDisplacementFromScreenCenter(int childIndex) {
-        int pageOrientationSize = mOrientationHandler.getMeasuredSize(this);
-        int screenCenter = mOrientationHandler.getPrimaryScroll(this) + (pageOrientationSize / 2);
+        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+        int screenCenter = getScreenCenter(primaryScroll);
         return getDisplacementFromScreenCenter(childIndex, screenCenter);
     }
 
+    private int getScreenCenter(int primaryScroll) {
+        float primaryScale = mOrientationHandler.getPrimaryScale(this);
+        float primaryPivot =  mOrientationHandler.getPrimaryValue(getPivotX(), getPivotY());
+        int pageOrientationSize = mOrientationHandler.getMeasuredSize(this);
+        return Math.round(primaryScroll + (pageOrientationSize / 2f - primaryPivot) / primaryScale
+                + primaryPivot);
+    }
+
     protected void snapToDestination() {
         snapToPage(getDestinationPage(), getPageSnapDuration());
     }

src/com/android/launcher3/anim/Interpolators.java

@@ -77,6 +77,9 @@ public class Interpolators {
 
     public static final Interpolator TOUCH_RESPONSE_INTERPOLATOR =
             new PathInterpolator(0.3f, 0f, 0.1f, 1f);
+    public static final Interpolator TOUCH_RESPONSE_INTERPOLATOR_ACCEL_DEACCEL =
+            v -> ACCEL_DEACCEL.getInterpolation(TOUCH_RESPONSE_INTERPOLATOR.getInterpolation(v));
+
 
     /**
      * Inversion of ZOOM_OUT, compounded with an ease-out.

src/com/android/launcher3/touch/LandscapePagedViewHandler.java

@@ -136,7 +136,7 @@ public class LandscapePagedViewHandler implements PagedOrientationHandler {
     }
 
     @Override
-    public int getClearAllScrollOffset(View view, boolean isRtl) {
+    public int getClearAllSidePadding(View view, boolean isRtl) {
         return (isRtl ? view.getPaddingBottom() : - view.getPaddingTop()) / 2;
     }
 

src/com/android/launcher3/touch/PagedOrientationHandler.java

@@ -66,7 +66,7 @@ public interface PagedOrientationHandler {
     float getPrimaryVelocity(VelocityTracker velocityTracker, int pointerId);
     int getMeasuredSize(View view);
     float getPrimarySize(RectF rect);
-    int getClearAllScrollOffset(View view, boolean isRtl);
+    int getClearAllSidePadding(View view, boolean isRtl);
     int getSecondaryDimension(View view);
     FloatProperty<View> getPrimaryViewTranslate();
     FloatProperty<View> getSecondaryViewTranslate();

src/com/android/launcher3/touch/PortraitPagedViewHandler.java

@@ -132,7 +132,7 @@ public class PortraitPagedViewHandler implements PagedOrientationHandler {
     }
 
     @Override
-    public int getClearAllScrollOffset(View view, boolean isRtl) {
+    public int getClearAllSidePadding(View view, boolean isRtl) {
         return (isRtl ? view.getPaddingRight() : - view.getPaddingLeft()) / 2;
     }