Introduction

Image\Thumb is a wrap of JImage, we can quickly generate image thumb and return url to use.

Create Thumb Object

$config = new JRegistry;

$extension = 'com_flower';

$thumb = new \Windwalker\Image\Thumb($config, $extension);

First params $config is to set some path of cache:

• path.cache
• path.temp
• url.cache
• url.temp

$extension means we can get config from this extension options. Thimb class will using ExtensionHelper to get params of this extension and merge to Thumb config.

Config in Extension XML

Using this xml in your config.xml.

<fields name="thumb">
    <field name="cache-path"
        type="text"
        label="Thumb Cache Path"
        />

    <field name="temp-path"
        type="text"
        label="Thumb Temp Path"
        />

    <field name="cache-url"
        type="text"
        label="Thumb Cache URL"
        />

    <field name="temp-url"
        type="text"
        label="Thumb Temp URL"
        />
</fields>

Create Image Thumb

Resize

$img = 'http://yoursite.com/images/image.png';

echo $thumb->resize($img, 150, 150);

Resize & Crop

echo $thumb->resize($img, 150, 150, \JImage::CROP_RESIZE);
// or
echo $thumb->resize($img, 150, 150, true);

Resize & Crop Methods

\JImage::SCALE_FILL
\JImage::SCALE_INSIDE
\JImage::SCALE_OUTSIDE
\JImage::CROP
\JImage::CROP_RESIZE
\JImage::SCALE_FIT

Quality

Add quality (max is 100) to 5th param.

echo $thumb->resize($img, 150, 150, \JImage::CROP_RESIZE, 95);

ThumbHelper

Resize

ThumbHelper can quickly generate thumbs:

echo \Windwalker\Image\ThumbHelper::resize($img, 150, 150, \JImage::SCALE_INSIDE);

Same as:

$thumb = new \Windwalker\Image\Thumb(null, 'lib_windwalker');
$thumb->resize($img, 150, 150, \JImage::SCALE_INSIDE);

getInstance

If we use this method to generate new object, it will be stored as singleton.

$thumb = ThumbHelper::getIbstance('com_flower', new JRegisrty);

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This document is for Windwalker Joomla RAD, if you are finding Windwalker PHP framework, please see: Windwalker Framework