Re-enable the fast scroll in widget picker (db7f098b) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/widget/picker/WidgetsFullSheet.java

+46 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,7 @@ public class WidgetsFullSheet extends BaseWidgetSheet
		private View mSearchBarContainer;
		private WidgetsSearchBar mSearchBar;
		private TextView mHeaderTitle;
		private @Nullable WidgetsRecyclerView mCurrentTouchEventRecyclerView;

		public WidgetsFullSheet(Context context, AttributeSet attrs, int defStyleAttr) {
		super(context, attrs, defStyleAttr);
		@@ -642,6 +643,51 @@ public class WidgetsFullSheet extends BaseWidgetSheet
		return sheet;
		}

		@Override
		public boolean onInterceptTouchEvent(MotionEvent ev) {
		return isTouchOnScrollbar(ev) \|\| super.onInterceptTouchEvent(ev);
		}

		@Override
		public boolean onTouchEvent(MotionEvent ev) {
		return maybeHandleTouchEvent(ev) \|\| super.onTouchEvent(ev);
		}

		private boolean maybeHandleTouchEvent(MotionEvent ev) {
		boolean isEventHandled = false;

		if (ev.getAction() == MotionEvent.ACTION_DOWN) {
		mCurrentTouchEventRecyclerView = isTouchOnScrollbar(ev) ? getRecyclerView() : null;
		}

		if (mCurrentTouchEventRecyclerView != null) {
		final float offsetX = mContent.getX();
		final float offsetY = mContent.getY();
		ev.offsetLocation(-offsetX, -offsetY);
		isEventHandled = mCurrentTouchEventRecyclerView.dispatchTouchEvent(ev);
		ev.offsetLocation(offsetX, offsetY);
		}

		if (ev.getAction() == MotionEvent.ACTION_UP
		\|\| ev.getAction() == MotionEvent.ACTION_CANCEL) {
		mCurrentTouchEventRecyclerView = null;
		}

		return isEventHandled;
		}

		private boolean isTouchOnScrollbar(MotionEvent ev) {
		final float offsetX = mContent.getX();
		final float offsetY = mContent.getY();
		WidgetsRecyclerView rv = getRecyclerView();

		ev.offsetLocation(-offsetX, -offsetY);
		boolean isOnScrollBar = rv != null && rv.getScrollbar() != null && rv.isHitOnScrollBar(ev);
		ev.offsetLocation(offsetX, offsetY);

		return isOnScrollBar;
		}

		/** Gets the {@link WidgetsRecyclerView} which shows all widgets in {@link WidgetsFullSheet}. */
		@VisibleForTesting
		public static WidgetsRecyclerView getWidgetsView(Launcher launcher) {

src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java

+10 −2

Original line number	Diff line number	Diff line
		@@ -127,8 +127,7 @@ public class WidgetsRecyclerView extends FastScrollRecyclerView implements OnIte
		@Override
		public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
		if (e.getAction() == MotionEvent.ACTION_DOWN) {
		mTouchDownOnScroller =
		mScrollbar.isHitInParent(e.getX(), e.getY(), mFastScrollerOffset);
		mTouchDownOnScroller = isHitOnScrollBar(e);
		}
		if (mTouchDownOnScroller) {
		final boolean result = mScrollbar.handleTouchEvent(e, mFastScrollerOffset);
		@@ -144,6 +143,15 @@ public class WidgetsRecyclerView extends FastScrollRecyclerView implements OnIte
		}
		}

		/**
		* Detects whether a {@code MotionEvent} is on the scroll bar
		* @param e The {@code MotionEvent} on the screen
		* @return {@code true} if the motion is on the scroll bar
		*/
		boolean isHitOnScrollBar(MotionEvent e) {
		return mScrollbar.isHitInParent(e.getX(), e.getY(), mFastScrollerOffset);
		}

		@Override
		public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
		}