La secuencia de comandos proporcionada por Andy Arismendi es increíble!
lo he usado para hacer un proyecto divertido - establecer un fondo de pantalla al azar raspado de la red.
Lo estoy publicando aquí para cualquier persona interesada.Antes de usarlo, debe cambiar algunas constantes en la parte superior del origen del script. También debe descargar la biblioteca HtmlAgilityPack.dll (hay instrucciones en los comentarios del script).
¡Disfrútalo!
P.S. Si el sitio de fondo de pantalla que estoy usando se cae o cambia su diseño, el raspado en el guión se irá al carajo, pero sin embargo con mi guión como ejemplo apuesto a que podrás construir otro raspador de fondo de pantalla.
############## CONSTANTS ##############
# add the library for parsing html - HtmlAgilityPack - download it with nuget from https://www.nuget.org/packages/HtmlAgilityPack
# download nuget command line from https://dist.nuget.org/index.html and install HtmlAgilityPack with "nuget install HtmlAgilityPack" from the cmd
# enter the path to HtmlAgilityPack.dll library used for html parsing
$html_parser_path = "C:\Users\username\Documents\htmlagilitypack\HtmlAgilityPack.1.4.9.5\lib\Net20\HtmlAgilityPack.dll"
# choose where your wallpapers will be downloaded
$wallpaper_dir_path = "C:\Users\username\Pictures\"
# get random wallpaper category from wallpaperscraft.com - the ones below are my favourite categories, edit it if you want to get other categories
<#
you can choose your favorite wallpaper categories from the list below
3D
Abstract
Animals
Anime
Brands
Cars
City
Fantasy
Flowers
Food
Games
Girls
Hi-Tech
Holidays
Macro
Men
Movies
Music
Nature
Other
Space
Sport
Textures
TV Series
Vector
#>
$categories = @("animals","flowers","macro","nature","space")
# I download my wallpapers from the site below - real quality wallpapers
# don't forget to change your resolution - I'm using a 1920x1080 monitor
<#
A list of resolutions to choose from:
1600x1200
1400x1050
1280x1024
1280x960
1152x864
1024x768
3840x2400
3840x2160
3840x1200
2560x1600
2560x1440
2560x1080
2560x1024
2048x1152
1920x1200
1920x1080
1680x1050
1600x900
1440x900
1280x800
1280x720
2160x3840
1440x2560
1366x768
1080x1920
1024x600
960x544
800x1280
800x600
720x1280
540x960
480x854
480x800
400x480
360x640
320x480
320x240
240x400
240x320
2732x2732
2048x2048
1080x1920
1024x1024
750x1334
640x1136
640x960
320x480
1366x768
1920x1080
360x640
1024x768
1600x900
1280x900
1440x900
1280x1024
800x600
1680x1050
2560x1440
320x480
1920x1200
480x800
720x1280
#>
$resolution = "1920x1080" # default resolution
$url = "https://wallpaperscraft.com/catalog/category/$resolution" # category is a placeholder
############## END OF CONSTANT DECLARATIONS ##############
Add-Type @"
using System;
using System.Runtime.InteropServices;
using Microsoft.Win32;
namespace Wallpaper
{
public enum Style : int
{
Tile, Center, Stretch, NoChange
}
public class Setter {
public const int SetDesktopWallpaper = 20;
public const int UpdateIniFile = 0x01;
public const int SendWinIniChange = 0x02;
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern int SystemParametersInfo (int uAction, int uParam, string lpvParam, int fuWinIni);
public static void SetWallpaper (string path, Wallpaper.Style style) {
SystemParametersInfo(SetDesktopWallpaper, 0, path, UpdateIniFile | SendWinIniChange);
RegistryKey key = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", true);
switch(style)
{
case Style.Stretch :
key.SetValue(@"WallpaperStyle", "2") ;
key.SetValue(@"TileWallpaper", "0") ;
break;
case Style.Center :
key.SetValue(@"WallpaperStyle", "1") ;
key.SetValue(@"TileWallpaper", "0") ;
break;
case Style.Tile :
key.SetValue(@"WallpaperStyle", "1") ;
key.SetValue(@"TileWallpaper", "1") ;
break;
case Style.NoChange :
break;
}
key.Close();
}
}
}
"@
Add-Type -Path $html_parser_path
$rand_index = Get-Random -minimum 0 -maximum $categories.Length
$random_category = $categories[$rand_index]
# replace the placeholder "category" with the random category chosen above
$url = $url -replace "category", $random_category
$doc = New-Object HtmlAgilityPack.HtmlDocument
$doc.LoadHtml((New-Object System.Net.WebClient).DownloadString($url))
# NOTE: the html parser I'm using locates elements by XPath only
$page_links = $doc.DocumentNode.SelectSingleNode("//div[contains(@class, 'pages')]").SelectNodes("a")
# get last page link
$last_page_link = $page_links[$page_links.Count - 1].GetAttributeValue("href", "")
# get last page number
$last_page_number = [regex]::match($last_page_link,'.*page(\d+)').Groups[1].Value
$random_page_number = Get-Random -minimum 0 -maximum $last_page_number
$random_page_addr = ""
# page 1 doesn't add anything to the url
if ($random_page_number -gt 0){
$random_page_addr = "/page$random_page_number"
}
$doc.LoadHtml((New-Object System.Net.WebClient).DownloadString("$url$random_page_addr"))
# get wallpaper divs
$wallpaper_divs = $doc.DocumentNode.SelectNodes("//div[contains(@class, 'wallpaper_pre')]")
$random_wallpaper_div = Get-Random -minimum 0 -maximum 15 # there are 15 wallpapers on a page
# get a sample wallpaper link which has to be substituted later
$sample_wallpaper_link = $wallpaper_divs[$random_wallpaper_div].SelectNodes("a")[0].GetAttributeValue("href", "")
# substitute the above link to get the image link itself
$sample_wallpaper_link = $sample_wallpaper_link -replace "download", "image"
$sample_wallpaper_link = $sample_wallpaper_link -replace "/$resolution", "_$resolution.jpg"
$sample_wallpaper_link = $sample_wallpaper_link -replace "//", "https://"
$wallpaper_image_name = [regex]::match($sample_wallpaper_link,'.*image/(\w+)').Groups[1].Value
$wallpaper_image_name = "$wallpaper_image_name.jpg"
$wc = New-Object System.Net.WebClient
$save_location = "$wallpaper_dir_path$wallpaper_image_name"
$wc.DownloadFile($sample_wallpaper_link, "$save_location")
[Wallpaper.Setter]::SetWallpaper($save_location, 1)
atajos actúan mucho como el símbolo del CMD, por lo que las líneas de comandos de acceso directo prueba allí, no en la línea de PowerShell. –