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# Kirby Image Crop Field
This plugin provides a field for cropping images visually and very flexibly.
![kirby-plugin-image-crop-field](https://user-images.githubusercontent.com/10421363/59161680-0b683280-8ae6-11e9-8bc4-5b9145f34387.gif)
The field is based on [vue-cropperjs](https://github.com/Agontuk/vue-cropperjs
) and [gumlet/php-image-resize](https://github.com/gumlet/php-image-resize).
## Installation
Use one of the alternatives below.
### Download
Download and copy this repository to `/site/plugins/kirby-plugin-image-crop-field.
### Git submodule
```
git submodule add https://github.com/steirico/kirby-plugin-image-crop-field.git site/plugins/kirby-plugin-image-crop-field
```
### Composer
```
composer require steirico/kirby-plugin-image-crop-field
```
## Usage
### File Blueprint Usage
The plugin defines the new field type `imagecrop` which can be used in [file blueprints](https://getkirby.com/docs/reference/panel/blueprints/file).
Define an appropriate file blueprint for images and add the field as follow:
> `/site/blueprints/files/image.yml`:
> ```yaml
> fields:
> crop:
> label: Image Crop
> type: imagecrop
> minSize:
> width: 700
> height: 250
> targetSize:
> width: 1400
> height: 500
> preserveAspectRatio: true
> ```
### Blueprint Options
#### `minSize`
Defines the minimum allowed size of the area that can be cropped from the original image.
* `width`: Minimum allowed width, bigger or equal to `1`
* `height`: Minimum allowed height, bigger or equal to `1`
Defaults:
* `width`: `1`
* `height`: `1`
#### `targetSize`
Target size of the image after it has been cropped. The resulting image will be scaled to `width` as defined by `targetSize.width` and `height` as defined by `targetSize.height`.
* `width`: Width of the target image, bigger or equal to `1`
* `height`: Minimum allowed height, bigger or equal to `1`
For both, `width` and `height`, negative values are interpreted as absolute values.
Defaults: The resulting image represents the cropped area and is not scaled.
#### `preserveAspectRatio`
Whether to preserve the aspect ratio of the crop area as defined by `minSize.width / minSize.height` or to allow free cropping:
* `true`: Preserve aspect ratio
* `false`: Free cropping
Default: `false`
### Cropped Image in the Panel
The plugin provides the [file method](https://getkirby.com/docs/reference/plugins/extensions/file-methods) called `croppedImage`. Applied as any other file method, `croppedImage` provides a `file` object of the cropped version of origin image.
The following configuration previews the cropped image in a `files sections`:
> `/site/blueprints/pages/album.yml`:
> ```yaml
> title: Album
>
> sections:
> images:
> type: files
> layout: cards
> template: image
> info: "{{ file.dimensions }}"
> image:
> ratio: 16/9
> cover: false
> query: file.croppedImage
> min: 1
> size: small
>```
### Use Cropped Image in Templates and Snippets
Use the the [file method](https://getkirby.com/docs/reference/plugins/extensions/file-methods) called `croppedImage` in order to work with the cropped image in templates and snippets:
> ```html
> <figure>
> <?= $page->image()->croppedImage() ?>
> </figure>
## Issues
Feel free to file an [issue](https://github.com/steirico/kirby-plugin-image-crop-field/issues) if you encounter any problems or unexpected behavior.
Currently there is a know issue that crooped images apear twice when geting images by `$page->images()`.
## License
MIT
## Credits
* [Rico Steiner](https://github.com/steirico)
* [vue-cropperjs](https://github.com/Agontuk/vue-cropperjs)
* [gumlet/php-image-resize](https://github.com/gumlet/php-image-resize)