Extension:VipsScaler

MediaWiki manüel uzantıları

VipsScaler Sürüm durumu: kararlı
Uygulama	Medya
Açıklama	PNG ve JPEG görüntülerini VIPS kullanarak ölçeklendirmeye izin verir
Yazar(lar)	Bryan Tong Minh (Bryanmesaj)
MediaWiki	1.19+
Veritabanı değişiklikleri	Hayır
Lisans	GNU Genel Kamu Lisansı 2.0 veya üstü
İndir	Uzantıyı indir Git [?]: Git master'ı indir depoyu göz at (GitHub) geçmişi işleyin veri deposu katkıda bulunanlar (GitHub) kod incelemesi README
Parametreler $wgVipsCommand $wgVipsOptions $wgVipsTestExpiry $wgVipsExposeTestPage $wgVipsThumbnailerHost
Eklenen haklar vipsscaler-test
Kullanılan kancalar BitmapHandlerCheckImageArea BitmapHandlerTransform
Quarterly downloads	13 (Ranked 129th)
Public wikis using	1,811 (Ranked 203rd)
Translatewiki.net adresinde mevcutsa, VipsScaler uzantısını çevirin
Sorunlar	Açık görevler · Hata bildir

The VipsScaler extension is a wrapper around the free image processing software VIPS. VIPS is a set of image manipulation tools specially designed for speed and low memory usage. This is useful for resizing large PNGs, and it improves the appearance of shrunken JPEGs.

The extension shells out to the vips binary. It can be configured to scale only certain files (for example: big PNGs) by configuring $wgVipsOptions.

VIPS kurulumu

Install 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

If you want to build from source have a look at upstream documentation: https://libvips.github.io/libvips/install.html

(Wikimedia has packaged and uses a more recent version for Ubuntu 12.04 at apt.wikimedia.org)

Mac OS X

homebrew

brew install homebrew/science/vips

binary symlink is /usr/local/bin/vips

Install VipsScaler extension

• Install VIPS (see above)
• Dosyaları indirin ve extensions/ klasörünüzdeki VipsScaler adlı dizine yerleştirin.
  Developers and code contributors should install the extension from Git instead, using:cd extensions/
git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/VipsScaler
• LocalSettings.php dosyanızın altına aşağıdaki kodu ekleyin:

  wfLoadExtension( 'VipsScaler' );
  

• Navigate to Special:VipsTest to verify it is working and see the difference in output quality.
•  Yapıldı – Uzantının başarıyla yüklendiğini doğrulamak için vikinizde Special:Version seçeneğine gidin.

Yapılandırma

$wgVipsCommand

path to the vips command (default: vips).

$wgVipsOptions

Options and conditions for images to be scaled with this scaler. Set to an array of arrays. The inner array contains a condition array, which contains a list of conditions that 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', which are parameters to 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.

$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',
    ],
  ],
];