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你能告诉我如何在图像上应用灰度滤镜LiipImagineBundle吗?

注意:我正在使用Symfony2

感谢,

4

2 回答 2

3

这对我有用:

<?php

namespace AppBundle\Imagine\Filter\Loader;

use Imagine\Filter\Advanced\Grayscale;
use Imagine\Image\ImageInterface;
use Liip\ImagineBundle\Imagine\Filter\Loader\LoaderInterface;

/**
 * Apply a grayscale effect to image.
 */
class GrayscaleFilterLoader implements LoaderInterface
{
    /**
     * {@inheritdoc}
     */
    public function load(ImageInterface $image, array $options = [])
    {
        $filter = new Grayscale();

        return $filter->apply($image);
    }
}

只需定义一个像这样的服务:

services:
    liip_imagine.filter.loader.grayscale:
        class: AppBundle\Imagine\Filter\Loader\GrayscaleFilterLoader
        tags:
            - { name: liip_imagine.filter.loader, loader: grayscale}

然后是一个过滤器:

liip_imagine:
    filter_sets:
        grayscale:
            filters:
                grayscale: ~
于 2015-05-04T09:24:07.020 回答
0

LiipImagineBundle 中没有内置灰度滤镜,因此您可以通过 3 个步骤创建自定义滤镜加载器:

1) 首先,您应该创建 GrayscaleFilterLoader 类,它应该像任何其他自定义过滤器一样实现 Liip\ImagineBundle\Imagine\Filter\Loader\LoaderInterface:

namespace AppBundle\Imagine\Filter\Loader;

...

/**
 * Class GrayscaleFilterLoader
 * @package AppBundle\Imagine\Filter\Loader
 */
class GrayscaleFilterLoader implements LoaderInterface
{
    /**
     * @param ImageInterface $image
     * @param array $options
     * @return ImageInterface
     */
    public function load(ImageInterface $image, array $options = [])
    {
        $image->effects()->grayscale();

        return $image;
    }
}

2)然后,你应该在服务容器中注册它并添加 liip_imagine.filter.loader 标记,加载器标记将是过滤器的名称:

#app/config/services.yml
liip_imagine.filter.loader.grayscale:
    class: AppBundle\Imagine\Filter\Loader\GrayscaleFilterLoader
    tags:
        - { name: liip_imagine.filter.loader, loader: grayscale}

3)最后,用它配置过滤器集:

#app/config/config.yml
your_filter_set_name:
    filters:
        ...
        grayscale: {}

而已!

于 2015-04-28T10:21:00.157 回答