Use cropperjs instead of Jcrop

JCrop is not maintained anymore and uses jQuery.
Cropperjs is a maintained jQuery-less alternative.

app/assets/config/alchemy_manifest.js

@@ -2,6 +2,5 @@
 //= link_tree ../builds/alchemy/
 //= link_tree ../images/alchemy/
 //= link_tree ../../../vendor/assets/fonts/
-//= link_tree ../../../vendor/assets/images/
 //= link_tree ../../javascript .js
 //= link_tree ../../../vendor/javascript .js

app/assets/stylesheets/alchemy/admin.scss

@@ -40,4 +40,4 @@
 @import "alchemy/admin/toolbar";
 @import "alchemy/admin/typography";
 @import "alchemy/admin/upload";
-@import "jquery.Jcrop.min";
+@import "cropper.min";

app/javascript/alchemy_admin.js

@@ -10,7 +10,6 @@ import Dirty from "alchemy_admin/dirty"
 import * as FixedElements from "alchemy_admin/fixed_elements"
 import { growl } from "alchemy_admin/growler"
 import ImageLoader from "alchemy_admin/image_loader"
-import ImageCropper from "alchemy_admin/image_cropper"
 import Initializer from "alchemy_admin/initializer"
 import { LinkDialog } from "alchemy_admin/link_dialog"
 import pictureSelector from "alchemy_admin/picture_selector"
@@ -46,7 +45,6 @@ Object.assign(Alchemy, {
   FixedElements,
   growl,
   ImageLoader: ImageLoader.init,
-  ImageCropper,
   LinkDialog,
   pictureSelector,
   pleaseWaitOverlay,

app/javascript/alchemy_admin/image_cropper.js

@@ -1,91 +1,108 @@
+import Cropper from "cropperjs"
+
 export default class ImageCropper {
+  #initialized = false
+  #cropper = null
+  #cropFromField = null
+  #cropSizeField = null
+
   constructor(
+    image,
     minSize,
     defaultBox,
     aspectRatio,
-    trueSize,
     formFieldIds,
     elementId
   ) {
-    this.initialized = false
-
+    this.image = image
     this.minSize = minSize
     this.defaultBox = defaultBox
     this.aspectRatio = aspectRatio
-    this.trueSize = trueSize
-    this.cropFromField = document.getElementById(formFieldIds[0])
-    this.cropSizeField = document.getElementById(formFieldIds[1])
+    this.#cropFromField = document.getElementById(formFieldIds[0])
+    this.#cropSizeField = document.getElementById(formFieldIds[1])
     this.elementId = elementId
     this.dialog = Alchemy.currentDialog()
-    this.dialog.options.closed = this.destroy
-
+    this.dialog.options.closed = () => this.destroy()
     this.init()
     this.bind()
   }
 
-  get jcropOptions() {
+  get cropperOptions() {
     return {
-      onSelect: this.update.bind(this),
-      setSelect: this.box,
       aspectRatio: this.aspectRatio,
-      minSize: this.minSize,
-      boxWidth: 800,
-      boxHeight: 600,
-      trueSize: this.trueSize,
-      closed: this.destroy.bind(this)
+      viewMode: 1,
+      zoomable: false,
+      minCropBoxWidth: this.minSize && this.minSize[0],
+      minCropBoxHeight: this.minSize && this.minSize[1],
+      ready: (event) => {
+        const cropper = event.target.cropper
+        cropper.setData(this.box)
+      },
+      cropend: () => {
+        const data = this.#cropper.getData(true)
+        this.update(data)
+      }
     }
   }
 
   get cropFrom() {
-    if (this.cropFromField.value) {
-      return this.cropFromField.value.split("x").map((v) => parseInt(v))
+    if (this.#cropFromField?.value) {
+      return this.#cropFromField.value.split("x").map((v) => parseInt(v))
     }
   }
 
   get cropSize() {
-    if (this.cropSizeField.value) {
-      return this.cropSizeField.value.split("x").map((v) => parseInt(v))
+    if (this.#cropSizeField?.value) {
+      return this.#cropSizeField.value.split("x").map((v) => parseInt(v))
     }
   }
 
   get box() {
     if (this.cropFrom && this.cropSize) {
-      return [
-        this.cropFrom[0],
-        this.cropFrom[1],
-        this.cropFrom[0] + this.cropSize[0],
-        this.cropFrom[1] + this.cropSize[1]
-      ]
+      return {
+        x: this.cropFrom[0],
+        y: this.cropFrom[1],
+        width: this.cropSize[0],
+        height: this.cropSize[1]
+      }
     } else {
-      return this.defaultBox
+      return this.defaultBoxSize
+    }
+  }
+
+  get defaultBoxSize() {
+    return {
+      x: this.defaultBox[0],
+      y: this.defaultBox[1],
+      width: this.defaultBox[2],
+      height: this.defaultBox[3]
     }
   }
 
   init() {
-    if (!this.initialized) {
-      this.api = $.Jcrop("#imageToCrop", this.jcropOptions)
-      this.initialized = true
+    if (!this.#initialized) {
+      this.#cropper = new Cropper(this.image, this.cropperOptions)
+      this.#initialized = true
     }
   }
 
   update(coords) {
-    this.cropFromField.value = Math.round(coords.x) + "x" + Math.round(coords.y)
-    this.cropFromField.dispatchEvent(new Event("change"))
-    this.cropSizeField.value = Math.round(coords.w) + "x" + Math.round(coords.h)
-    this.cropFromField.dispatchEvent(new Event("change"))
+    this.#cropFromField.value = `${coords.x}x${coords.y}`
+    this.#cropFromField.dispatchEvent(new Event("change"))
+    this.#cropSizeField.value = `${coords.width}x${coords.height}`
+    this.#cropSizeField.dispatchEvent(new Event("change"))
   }
 
   reset() {
-    this.api.setSelect(this.defaultBox)
-    this.cropFromField.value = `${this.box[0]}x${this.box[1]}`
-    this.cropSizeField.value = `${this.box[2]}x${this.box[3] - this.box[1]}`
+    this.#cropper.setData(this.defaultBoxSize)
+    this.update(this.defaultBoxSize)
   }
 
   destroy() {
-    if (this.api) {
-      this.api.destroy()
+    if (this.#cropper) {
+      this.#cropper.destroy()
     }
-    this.initialized = false
+    this.#initialized = false
     return true
   }
 

app/models/alchemy/image_cropper_settings.rb

@@ -20,8 +20,7 @@ def to_h
       {
         min_size: large_enough? ? min_size : false,
         ratio: ratio,
-        default_box: default_box,
-        image_size: [image_width, image_height]
+        default_box: default_box
       }.freeze
     end
 
@@ -79,8 +78,8 @@ def default_box
       [
         default_crop_from[0],
         default_crop_from[1],
-        default_crop_from[0] + default_crop_size[0],
-        default_crop_from[1] + default_crop_size[1]
+        default_crop_size[0],
+        default_crop_size[1]
       ]
     end
   end

app/views/alchemy/admin/crop.html.erb

@@ -8,7 +8,7 @@
     <%= simple_format Alchemy.t(:explain_cropping) %>
   <% end %>
   <div class="thumbnail_background">
-    <%= image_tag @picture.thumbnail_url(size: '800x600'), id: 'imageToCrop' %>
+    <%= image_tag @picture.url(flatten: true), id: 'imageToCrop' %>
   </div>
   <form>
     <%= button_tag Alchemy.t(:apply), type: 'submit' %>
@@ -17,20 +17,23 @@
 </div>
 <% end %>
 <% if @settings %>
-<script type="text/javascript">
-  Alchemy.ImageLoader('#jscropper .thumbnail_background');
-  $('#imageToCrop').on("load", function() {
-    new Alchemy.ImageCropper(
-      <%= @settings[:min_size].to_json %>,
-      <%= @settings[:default_box].to_json %>,
-      <%= @settings[:ratio] %>,
-      <%= @settings[:image_size].to_json %>,
-      [
-        "<%= params[:crop_from_form_field_id] %>",
-        "<%= params[:crop_size_form_field_id] %>",
-      ],
-      <%= @element.id %>
-    );
-  });
+<script type="module">
+  import ImageCropper from "alchemy_admin/image_cropper";
+  import ImageLoader from "alchemy_admin/image_loader";
+
+  const image = document.getElementById("imageToCrop");
+
+  new ImageLoader(image);
+  new ImageCropper(
+    image,
+    <%= @settings[:min_size].to_json %>,
+    <%= @settings[:default_box].to_json %>,
+    <%= @settings[:ratio] %>,
+    [
+      "<%= params[:crop_from_form_field_id] %>",
+      "<%= params[:crop_size_form_field_id] %>",
+    ],
+    <%= @element.id %>
+  );
 </script>
 <% end %>

config/importmap.rb

@@ -1,5 +1,6 @@
 pin "@ungap/custom-elements", to: "ungap-custom-elements.min.js", preload: true # @1.3.0
 pin "clipboard", to: "clipboard.min.js", preload: true
+pin "cropperjs", to: "cropperjs.min.js", preload: true
 pin "flatpickr", to: "flatpickr.min.js", preload: true # @4.6.13
 pin "handlebars", to: "handlebars.min.js", preload: true # @4.7.8
 pin "keymaster", to: "keymaster.min.js", preload: true

package.json

@@ -5,7 +5,7 @@
     "lint": "prettier --check 'app/javascript/**/*.js'",
     "eslint": "eslint app/javascript/**/*.js",
     "build:js": "rollup -c",
-    "build:css": "sass --style=compressed --source-map --load-path app/assets/stylesheets --load-path vendor/assets/stylesheets app/assets/stylesheets/alchemy/admin.scss:app/assets/builds/alchemy/admin.css app/assets/stylesheets/alchemy/admin/print.scss:app/assets/builds/alchemy/admin/print.css app/assets/stylesheets/alchemy/welcome.scss:app/assets/builds/alchemy/welcome.css app/assets/stylesheets/tinymce/skins/content/alchemy/content.scss:app/assets/builds/tinymce/skins/content/alchemy/content.min.css app/assets/stylesheets/tinymce/skins/ui/alchemy/skin.scss:app/assets/builds/tinymce/skins/ui/alchemy/skin.min.css app/assets/stylesheets/alchemy/admin/page-select.scss:app/assets/builds/alchemy/admin/page-select.css",
+    "build:css": "sass --style=compressed --source-map --load-path app/assets/stylesheets --load-path vendor/assets/stylesheets --load-path node_modules/cropperjs/dist app/assets/stylesheets/alchemy/admin.scss:app/assets/builds/alchemy/admin.css app/assets/stylesheets/alchemy/admin/print.scss:app/assets/builds/alchemy/admin/print.css app/assets/stylesheets/alchemy/welcome.scss:app/assets/builds/alchemy/welcome.css app/assets/stylesheets/tinymce/skins/content/alchemy/content.scss:app/assets/builds/tinymce/skins/content/alchemy/content.min.css app/assets/stylesheets/tinymce/skins/ui/alchemy/skin.scss:app/assets/builds/tinymce/skins/ui/alchemy/skin.min.css app/assets/stylesheets/alchemy/admin/page-select.scss:app/assets/builds/alchemy/admin/page-select.css",
     "handlebars:compile": "handlebars app/javascript/alchemy_admin/templates/*.hbs -f app/javascript/alchemy_admin/templates/compiled.js -o -m",
     "build": "bun run --bun build:js && bun run --bun build:css && bun run --bun handlebars:compile"
   },
@@ -17,6 +17,7 @@
     "@shoelace-style/shoelace": "^2.16.0",
     "@ungap/custom-elements": "^1.3.0",
     "clipboard": "^2.0.11",
+    "cropperjs": "^1.6.2",
     "flatpickr": "^4.6.13",
     "handlebars": "^4.7.8",
     "keymaster": "^1.6.2",

rollup.config.mjs

@@ -10,6 +10,14 @@ export default [
     },
     context: "window"
   },
+  {
+    input: "node_modules/cropperjs/dist/cropper.esm.js",
+    output: {
+      file: "vendor/javascript/cropperjs.min.js"
+    },
+    plugins: [terser()],
+    context: "window"
+  },
   {
     input: "node_modules/flatpickr/dist/esm/index.js",
     output: {

spec/models/alchemy/image_cropper_settings_spec.rb

@@ -106,14 +106,14 @@
         end
 
         it "should return an Array where all values are Integer" do
-          expect(default_box.all? { |v| v.is_a? Integer }).to be_truthy
+          expect(default_box.all?(Integer)).to be_truthy
         end
 
         context "with crop from and crop size given" do
           let(:crop_from) { [0, 25] }
           let(:crop_size) { [50, 50] }
 
-          it { is_expected.to eq([0, 25, 50, 75]) }
+          it { is_expected.to eq([0, 25, 50, 50]) }
         end
       end
 
@@ -142,12 +142,6 @@
           end
         end
       end
-
-      describe ":image_size" do
-        it "is an Array of image width and height" do
-          expect(subject[:image_size]).to eq([300, 250])
-        end
-      end
     end
   end
 end