Merge "Add rounded corners to letterbox when taskbar is visible" into tm-qpr-dev am: 3d1c9948

    private final LetterboxConfiguration mLetterboxConfiguration;

    private final ActivityRecord mActivityRecord;

    // Taskbar expanded height. Used to determine whether to crop an app window to display rounded

    // corners above the taskbar.

    private final float mExpandedTaskBarHeight;

    private boolean mShowWallpaperForLetterboxBackground;

    @Nullable

        // is created in its constructor. It shouldn't be used in this constructor but it's safe

        // to use it after since controller is only used in ActivityRecord.

        mActivityRecord = activityRecord;

        mExpandedTaskBarHeight =

                getResources().getDimensionPixelSize(R.dimen.taskbar_frame_height);

    }

    /** Cleans up {@link Letterbox} if it exists.*/

        final InsetsSource taskbarInsetsSource = getTaskbarInsetsSource(mainWindow);

        return taskbarInsetsSource != null

                && taskbarInsetsSource.getFrame().height() >= mExpandedTaskBarHeight

                && taskbarInsetsSource.isVisible();

    }