1e41f4b71Sopenharmony_ci# Theme Framework 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci## Introduction 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci### About the Subsystem 6e41f4b71Sopenharmony_ciThe theme framework subsystem consists of the wallpaper management service and lock screen management service, providing basic capabilities such as wallpaper setting, screen locking, and screen unlocking for the system. 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci### Architecture 9e41f4b71Sopenharmony_ci**Figure 1** Architecture of the theme framework subsystem 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci## Directory Structure 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci``` 16e41f4b71Sopenharmony_cibase/theme 17e41f4b71Sopenharmony_ci├──wallpaper_mgr # Wallpaper management service 18e41f4b71Sopenharmony_ci└──screenlock_mgr # Lock screen management service 19e41f4b71Sopenharmony_ci``` 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci## Services 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci### Wallpaper Management Service 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ciThe wallpaper management service provides APIs for setting wallpapers and comes with a wallpaper switching notification mechanism. 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci### Lock Screen Management Service 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ciThe lock screen management service provides capabilities for locking and unlocking the screen, supports screen lock and unlock notifications, and enables lock screen applications to register system event callbacks. 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci## Repositories Involved 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci[theme\_wallpaper\_mgr](https://gitee.com/openharmony/theme_wallpaper_mgr) 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci[theme\_screenlock\_mgr](https://gitee.com/openharmony/theme_screenlock_mgr) 36
