Extension:VipsScaler/pl

Podręcznik rozszerzeń MediaWiki

VipsScaler Status wydania: stabilne
Realizacja	Media
Opis	Allows to scale PNG and JPEG images using VIPS
Autor(zy)	Bryan Tong Minh (Bryandyskusja)
MediaWiki	1.19+
Zmiany w bazie danych	Nie
Licencja	Licencja GNU General Public License 2.0 lub nowsza
Pobieranie	Pobierz rozszerzenie Git [?]: Pobierz Git master przeglądaj repozytorium (GitHub) historia wprowadzeń repository contributors (GitHub) ocena kodu README
Parametry $wgVipsCommand $wgVipsOptions $wgVipsTestExpiry $wgVipsExposeTestPage $wgVipsThumbnailerHost
Dodawane uprawnienia vipsscaler-test
Użyte haki BitmapHandlerCheckImageArea BitmapHandlerTransform
Quarterly downloads	15 (Ranked 115th)
Public wikis using	1,811 (Ranked 203rd)
Przetłumacz rozszerzenie VipsScaler jeżeli jest dostępne na translatewiki.net
Problemy	Otwarte zadania · Zgłoś błąd

The VipsScaler extension creates JPG and PNG thumbnails faster and at low memory usage. The extension replaces MediaWiki core's Media handlers for bitmaps, which default to ImageMagick. It is powered by the free image processing software VIPS, which speeds up resizing of large PNGs, and it improves the appearance of shrunken JPEGs.

The extension shells out to the VIPS binary. By configuring $wgVipsOptions, it can be configured to scale only certain files (for example, big PNG files).

Instalacja

VIPS

Install VIPS. It can be downloaded from https://libvips.github.io/libvips or your OS repository (see below).

Debian / Ubuntu

$ apt-get install libvips-tools

Mac OS X

$ brew install homebrew/science/vips
$ binary symlink is /usr/local/bin/vips

VipsScaler extension

• Install VIPS
• Pobierz i umieść plik(i) w katalogu o nazwie VipsScaler w folderze extensions/.
  Developers and code contributors should install the extension from Git instead, using:cd extensions/
git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/VipsScaler
• Dodaj poniższy kod na dole twojego pliku LocalSettings.php :

  wfLoadExtension( 'VipsScaler' );
  

• Configure as required.
•  Zrobione – Przejdź do Special:Version na twojej wiki, aby sprawdzić czy rozszerzenie zostało pomyślnie zainstalowane.

Konfiguracja

$wgVipsCommand

Path to the "vips" command (default: /usr/bin/vips).

$wgVipsOptions

Options and conditions to scale images with this scaler (default: empty). Set to an array of arrays. The inner array contains a condition array, which contains a list of conditions the image should pass for it to be scaled with VIPS. Conditions are mimeType, minArea, maxArea, minShrinkFactor, maxShrinkFactor. The other items in the array are options. Options available are:

• sharpen - Set to an array with keys 'radius' and 'sigma', parameters to the Gaussian sharpen matrix.
• preconvert - Convert the file to a .v file first, which costs some space but saves memory on the actual downsize
• bilinear - Use im_resize_linear instead of im_shrink
• convolution - Apply specified convolution matrix
• setcomment - Add an EXIF comment specifying the source of the file. Requires $wgExiv2Command to be set properly.

Example

$wgVipsOptions = [
  // Sharpen jpeg files which are shrunk more than 1.2
  [
    'conditions' => [
      'mimeType' => 'image/jpeg',
      'minShrinkFactor' => 1.2,
    ],
    'sharpen' => [
      'radius' => 0,
      'sigma' => 0.8
    ],
  ],
  // Other jpeg files
  [
    'conditions' =>[
      'mimeType' => 'image/jpeg',
    ],
    'sharpen' => false,
    'bilinear' => true,
  ],
  // Do a simple shrink for PNGs
  [
    'conditions' => [
      'mimeType' => 'image/png',
    ],
  ],
];

$wgVipsExposeTestPage

Allow testing via "Special:VipsTest", which lets you verify it is working and see the difference in output quality. (default: false).

See also

• Extension:Thumbro - Forked and rewritten version of this extension