1 files changed, 152 insertions, 0 deletions
diff --git a/app/assets/javascripts/profile/gl_crop.js.coffee b/app/assets/javascripts/profile/gl_crop.js.coffee
new file mode 100644
index 00000000000..df9bfdfa6cc
--- /dev/null
+++ b/app/assets/javascripts/profile/gl_crop.js.coffee
@@ -0,0 +1,152 @@
+class GitLabCrop
+  # Matches everything but the file name
+  FILENAMEREGEX = /^.*[\\\/]/
+
+  constructor: (input, opts = {}) ->
+    @fileInput = $(input)
+
+    # We should rename to avoid spec to fail
+    # Form will submit the proper input filed with a file using FormData
+    @fileInput
+      .attr('name', "#{@fileInput.attr('name')}-trigger")
+      .attr('id', "#{@fileInput.attr('id')}-trigger")
+
+    # Set defaults
+    {
+      @exportWidth = 200
+      @exportHeight = 200
+      @cropBoxWidth = 200
+      @cropBoxHeight = 200
+      @form = @fileInput.parents('form')
+
+      # Required params
+      @filename
+      @previewImage
+      @modalCrop
+      @pickImageEl
+      @uploadImageBtn
+      @modalCropImg
+    } = opts
+
+    # Ensure needed elements are jquery objects
+    # If selector is provided we will convert them to a jQuery Object
+    @filename = @getElement(@filename)
+    @previewImage = @getElement(@previewImage)
+    @pickImageEl = @getElement(@pickImageEl)
+
+    # Modal elements usually are outside the @form element
+    @modalCrop = if _.isString(@modalCrop) then $(@modalCrop) else @modalCrop
+    @uploadImageBtn = if _.isString(@uploadImageBtn) then $(@uploadImageBtn) else @uploadImageBtn
+    @modalCropImg = if _.isString(@modalCropImg) then $(@modalCropImg) else @modalCropImg
+
+    @cropActionsBtn = @modalCrop.find('[data-method]')
+
+    @bindEvents()
+
+  getElement: (selector) ->
+    $(selector, @form)
+
+  bindEvents: ->
+    _this = @
+    @fileInput.on 'change', (e) ->
+      _this.onFileInputChange(e, @)
+
+    @pickImageEl.on 'click', @onPickImageClick
+    @modalCrop.on 'shown.bs.modal', @onModalShow
+    @modalCrop.on 'hidden.bs.modal', @onModalHide
+    @uploadImageBtn.on 'click', @onUploadImageBtnClick
+    @cropActionsBtn.on 'click', (e) ->
+      btn = @
+      _this.onActionBtnClick(btn)
+    @croppedImageBlob = null
+
+  onPickImageClick: =>
+    @fileInput.trigger('click')
+
+  onModalShow: =>
+    _this = @
+    @modalCropImg.cropper(
+      viewMode: 1
+      center: false
+      aspectRatio: 1
+      modal: true
+      scalable: false
+      rotatable: false
+      zoomable: true
+      dragMode: 'move'
+      guides: false
+      zoomOnTouch: false
+      zoomOnWheel: false
+      cropBoxMovable: false
+      cropBoxResizable: false
+      toggleDragModeOnDblclick: false
+      built: ->
+        $image = $(@)
+        container = $image.cropper 'getContainerData'
+        cropBoxWidth = _this.cropBoxWidth;
+        cropBoxHeight = _this.cropBoxHeight;
+
+        $image.cropper('setCropBoxData',
+          width: cropBoxWidth,
+          height: cropBoxHeight,
+          left: (container.width - cropBoxWidth) / 2,
+          top: (container.height - cropBoxHeight) / 2
+        )
+    )
+
+
+  onModalHide: =>
+    @modalCropImg
+      .attr('src', '') # Remove attached image
+      .cropper('destroy') # Destroy cropper instance
+
+  onUploadImageBtnClick: (e) =>
+    e.preventDefault()
+    @setBlob()
+    @setPreview()
+    @modalCrop.modal('hide')
+    @fileInput.val('')
+
+  onActionBtnClick: (btn) ->
+    data = $(btn).data()
+
+    if @modalCropImg.data('cropper') && data.method
+      result = @modalCropImg.cropper data.method, data.option
+
+  onFileInputChange: (e, input) ->
+    @readFile(input)
+
+  readFile: (input) ->
+    _this = @
+    reader = new FileReader
+    reader.onload = ->
+      _this.modalCropImg.attr('src', reader.result)
+      _this.modalCrop.modal('show')
+
+    reader.readAsDataURL(input.files[0])
+
+  dataURLtoBlob: (dataURL) ->
+    binary = atob(dataURL.split(',')[1])
+    array = []
+    for v, k in  binary
+      array.push(binary.charCodeAt(k))
+    new Blob([new Uint8Array(array)], type: 'image/png')
+
+  setPreview: ->
+    @previewImage.attr('src', @dataURL)
+    filename = @fileInput.val().replace(FILENAMEREGEX, '')
+    @filename.text(filename)
+
+  setBlob: ->
+    @dataURL = @modalCropImg.cropper('getCroppedCanvas',
+        width: 200
+        height: 200
+      ).toDataURL('image/png')
+    @croppedImageBlob = @dataURLtoBlob(@dataURL)
+
+  getBlob: ->
+    @croppedImageBlob
+
+$.fn.glCrop = (opts) ->
+  return @.each ->
+    $(@).data('glcrop', new GitLabCrop(@, opts))