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