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Commit bd26d2a5 authored by Wale Ogunwale's avatar Wale Ogunwale
Browse files

Allow stacks behind a translucent fullscreen stack to be visible 

Stacks behind the fullscreen stack with a translucent activity
are always visible so they can act as a backdrop to the translucent
activity.

Bug: 23626353
Change-Id: I3d76ae6bedbba90736706474dcab53d75b60304a
parent 9477229f

services/core/java/com/android/server/am/ActivityStack.java

+18 −7
Original line number Diff line number Diff line
@@ -1335,17 +1335,28 @@ final class ActivityStack { 
            return topHomeActivity == null || !topHomeActivity.isHomeActivity();

        }



        if (focusedStackId == DOCKED_STACK_ID

                && stackIndex == (mStacks.indexOf(focusedStack) - 1)) {

        final int belowFocusedIndex = mStacks.indexOf(focusedStack) - 1;

        if (focusedStackId == DOCKED_STACK_ID && stackIndex == belowFocusedIndex) {

            // Stacks directly behind the docked stack are always visible.

            return true;

        }



        if (mStackId == HOME_STACK_ID && focusedStackId == FULLSCREEN_WORKSPACE_STACK_ID) {

            // Home stack is always visible behind the fullscreen stack with a translucent activity.

            // This is done so that the home stack can act as a background to the translucent

            // activity.

            return hasTranslucentActivity(focusedStack);

        if (focusedStackId == FULLSCREEN_WORKSPACE_STACK_ID

                && hasTranslucentActivity(focusedStack)) {

            // Stacks behind the fullscreen stack with a translucent activity are always

            // visible so they can act as a backdrop to the translucent activity.

            // For example, dialog activities

            if (stackIndex == belowFocusedIndex) {

                return true;

            }

            if (belowFocusedIndex >= 0) {

                final ActivityStack stack = mStacks.get(belowFocusedIndex);

                if (stack.mStackId == DOCKED_STACK_ID && stackIndex == (belowFocusedIndex - 1)) {

                    // The stack behind the docked stack is also visible so we can have a complete

                    // backdrop to the translucent activity when the docked stack is up.

                    return true;

                }

            }

        }



        if (mStackId >= FIRST_STATIC_STACK_ID && mStackId <= LAST_STATIC_STACK_ID) {