Merge "Don't rely on stale DP.isLeftRightSplit for app pair landscape launch" into main

        val mainRootCandidate = splitRoots.first

        // Will contain changes (1) and (2) in diagram above

        val leafRoots: List<Change> = splitRoots.second

        // Don't rely on DP.isLeftRightSplit because if launcher is portrait apps could still

        // launch in landscape if system auto-rotate is enabled and phone is held horizontally

        val isLeftRightSplit = leafRoots.all { it.endAbsBounds.top == 0 }

        // Find the place where our left/top app window meets the divider (used for the

        // launcher side animation)

        val leftTopApp =

            leafRoots.single { change ->

                (dp.isLeftRightSplit && change.endAbsBounds.left == 0) ||

                    (!dp.isLeftRightSplit && change.endAbsBounds.top == 0)

                (isLeftRightSplit && change.endAbsBounds.left == 0) ||

                    (!isLeftRightSplit && change.endAbsBounds.top == 0)

            }

        val dividerPos =

            if (dp.isLeftRightSplit) leftTopApp.endAbsBounds.right

            if (isLeftRightSplit) leftTopApp.endAbsBounds.right

            else leftTopApp.endAbsBounds.bottom

        // Create a new floating view in Launcher, positioned above the launching icon