wallpaper service

Introduction

1、Provide wallpaper service capability for the system, and support wallpaper display, setting, switching wallpaper and other functions;

2、Provide the framework and interface for developers to develop wallpaper, and develop wallpaper applications;

subsystem architecture diagram

Warehouse path

/base/theme/wallpaper_mgr

Introduction to framework code

/base/theme/wallpaper_mgr ├── figures # architecture diagram ├── frameworks │ ├── js/napi # the js interface resolves to the napi interface │ ├── kits/extension # extension │ └── native # interface provided for app ├── services # implementation of wallpaper manager service │ ├── profile # module contains the config files of system services │ └── etc # module contains the config files of processes ├── test # unit test of interface └── utils # module contains log printing and constants for ordered commonEvent

Interface Introduction

Table 1 Main method of wallpaper service

Interface Name	Description
function getColors(wallpaperType: WallpaperType): Promise<Array<RgbaColor>>	Obtains the wallpaper colors for the wallpaper of the specified type（system screen or lockscreen），Promise
function getId(wallpaperType: WallpaperType): Promise<number>	Obtains the ID of the wallpaper of the specified type（system screen or lockscreen），Promise
function getPixelMap(wallpaperType: WallpaperType): Promise<image.PixelMap>	Obtains the default pixel map of a wallpaper of the specified type（system screen or lockscreen），Promise
function setWallpaper(source: string | image.PixelMap, wallpaperType: WallpaperType): Promise<void>	Sets a wallpaper of the specified type based on the uri path from a JPEG or PNG file or the pixel map of a PNG file（wallpaper path or pixelmap），Promise
function on(type: 'colorChange', callback: (colors: Array<RgbaColor>, wallpaperType: WallpaperType) => void): void;	Registers a listener for wallpaper color changes to receive notifications about the changes，callback
function off(type: 'colorChange', callback?: (colors: Array<RgbaColor>, wallpaperType: WallpaperType) => void): void;	Unregisters a listener for wallpaper color changes，callback

JS APIs instructions

//get pixelmap callback with callback
wallpaper.getPixelMap(WALLPAPER_SYSTEM, function (err, data) {
            console.info('wallpaperXTS ===> testGetPixelMapCallbackSystem err : ' + JSON.stringify(err));
            console.info('wallpaperXTS ===> testGetPixelMapCallbackSystem data : ' + JSON.stringify(data));
            if(err){
                expect(null).assertFail();
            }
            if((data != undefined) && (data != null) && (data != '')){
                expect(true).assertTrue();
            }
        })

//get pixelmap callback with Promise
wallpaper.getPixelMap(WALLPAPER_SYSTEM).then((data) => {
            console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem data : ' + data);
            console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem data : ' + JSON.stringify(data));
            if((data != undefined) && (data != null) && (data != '')){
                expect(true).assertTrue();
            }
        }).catch((err) => {
            console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem err : ' + err);
            console.info('wallpaperXTS ===> testGetPixelMapPromiseSystem err : ' + JSON.stringify(err));
            if(err){
                expect(null).assertFail();
            }
        });

//set pixelmap callback with callback
wallpaper.setWallpaper(pixelmap, WALLPAPER_SYSTEM, function (err, data) {
                console.info('wallpaperXTS ===> testSetWallpaperPixelMapCallbackSystem err : ' + JSON.stringify(err));
                console.info('wallpaperXTS ===> testSetWallpaperPixelMapCallbackSystem data : ' + JSON.stringify(data));
                if(err){
                    expect(null).assertFail();
                }
                if((data != undefined) && (data != null) && (data != '')){
                    expect(true).assertTrue();
                }
            });

//set pixelmap callback with Promise
wallpaper.setWallpaper(pixelmap, WALLPAPER_SYSTEM).then((data) => {
                console.info('wallpaperXTS ===> testSetWallpaperPixelMapPromiseSystem data : ' + JSON.stringify(data));
                if((data != undefined) && (data != null) && (data != '')){
                    expect(true).assertTrue();
                }
            }).catch((err) => {
                console.info('wallpaperXTS ===> testSetWallpaperPixelMapPromiseSystem err : ' + JSON.stringify(err));
                if(err){
                    expect(null).assertFail();
                }
            });

Participation contribution

1. Fork warehouse
2. Submission code
3. Create a new pull request
4. Commit is complete