Merge branch 'avatar-cropping' into 'master'

Fix avatar stretching by providing a cropping feature

Originally by @nesk at https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2773

Fixes #7959

See merge request !2951

9 files changed, 129 insertions, 5 deletions

diff --git a/app/assets/javascripts/application.js.coffee b/app/assets/javascripts/application.js.coffee
index 0651bd20d26..5463397f475 100644
--- a/app/assets/javascripts/application.js.coffee
+++ b/app/assets/javascripts/application.js.coffee
@@ -44,6 +44,7 @@
 #= require jquery.nicescroll
 #= require_tree .
 #= require fuzzaldrin-plus
+#= require cropper.js
 
 window.slugify = (text) ->
   text.replace(/[^-a-zA-Z0-9]+/g, '_').toLowerCase()
diff --git a/app/assets/javascripts/profile.js.coffee b/app/assets/javascripts/profile.js.coffee
index bb0b66b86e1..69d590a7533 100644
--- a/app/assets/javascripts/profile.js.coffee
+++ b/app/assets/javascripts/profile.js.coffee
@@ -16,11 +16,50 @@ class @Profile
     $('.update-notifications').on 'ajax:complete', ->
       $(this).find('.btn-save').enable()
 
-    $('.js-choose-user-avatar-button').bind "click", ->
-      form = $(this).closest("form")
-      form.find(".js-user-avatar-input").click()
+    # Avatar management
+
+    $avatarInput = $('.js-user-avatar-input')
+    $filename = $('.js-avatar-filename')
+    $modalCrop = $('.modal-profile-crop')
+    $modalCropImg = $('.modal-profile-crop-image')
+
+    $('.js-choose-user-avatar-button').on "click", ->
+      $form = $(this).closest("form")
+      $form.find(".js-user-avatar-input").click()
+
+    $modalCrop.on 'shown.bs.modal', ->
+      setTimeout ( -> # The cropper must be asynchronously initialized
+        $modalCropImg.cropper
+          aspectRatio: 1
+          modal: false
+          scalable: false
+          rotatable: false
+          zoomable: false
+
+          crop: (event) ->
+            ['x', 'y'].forEach (key) ->
+              $("#user_avatar_crop_#{key}").val(Math.floor(event[key]))
+            $("#user_avatar_crop_size").val(Math.floor(event.width))
+      ), 0
+
+    $modalCrop.on 'hidden.bs.modal', ->
+      $modalCropImg.attr('src', '').cropper('destroy')
+      $avatarInput.val('')
+      $filename.text($filename.data('label'))
 
-    $('.js-user-avatar-input').bind "change", ->
+    $('.js-upload-user-avatar').on 'click', ->
+      $('.edit_user').submit()
+
+    $avatarInput.on "change", ->
       form = $(this).closest("form")
       filename = $(this).val().replace(/^.*[\\\/]/, '')
-      form.find(".js-avatar-filename").text(filename)
+      $filename.data('label', $filename.text()).text(filename)
+
+      reader = new FileReader
+
+      reader.onload = (event) ->
+        $modalCrop.modal('show')
+        $modalCropImg.attr('src', event.target.result)
+
+      fileData = reader.readAsDataURL(this.files[0])
+
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
index 0c0451fe4dd..f51054f13dc 100644
--- a/app/assets/stylesheets/application.scss
+++ b/app/assets/stylesheets/application.scss
@@ -9,6 +9,7 @@
  *= require_self
  *= require dropzone/basic
  *= require cal-heatmap
+ *= require cropper.css
 */
 
 /*
diff --git a/app/assets/stylesheets/framework/mixins.scss b/app/assets/stylesheets/framework/mixins.scss
index 1d5000fe388..368bbfe5355 100644
--- a/app/assets/stylesheets/framework/mixins.scss
+++ b/app/assets/stylesheets/framework/mixins.scss
@@ -41,6 +41,12 @@
   transition: $transition;
 }
 
+@mixin transform($transform) {
+  -webkit-transform: $transform;
+  -ms-transform: $transform;
+  transform: $transform;
+}
+
 /**
  * Prefilled mixins
  * Mixins with fixed values
diff --git a/app/assets/stylesheets/pages/profile.scss b/app/assets/stylesheets/pages/profile.scss
index 4767c65d9a7..de4d9fd80fa 100644
--- a/app/assets/stylesheets/pages/profile.scss
+++ b/app/assets/stylesheets/pages/profile.scss
@@ -78,3 +78,39 @@
   max-width: 750px;
   margin: auto;
 }
+
+.modal-profile-crop {
+  .modal-dialog {
+    width: 500px;
+  }
+
+  .modal-body {
+    p {
+      display: table;
+      margin: auto;
+      overflow: hidden;
+    }
+
+    img {
+      display: block;
+      max-width: 400px;
+      max-height: 400px;
+    }
+
+    .cropper-bg {
+      background: none;
+    }
+
+    .cropper-crop-box {
+      box-sizing: content-box;
+      border: 999px solid transparentize(#ccc, 0.5);
+      @include transform(translate(-999px, -999px));
+    }
+  }
+}
+
+@media (max-width: 520px) {
+  .modal-profile-crop .modal-dialog {
+    width: auto;
+  }
+}
diff --git a/app/controllers/profiles_controller.rb b/app/controllers/profiles_controller.rb
index 28803164fcf..fa7a1148961 100644
--- a/app/controllers/profiles_controller.rb
+++ b/app/controllers/profiles_controller.rb
@@ -65,6 +65,9 @@ class ProfilesController < Profiles::ApplicationController
 
   def user_params
     params.require(:user).permit(
+      :avatar_crop_x,
+      :avatar_crop_y,
+      :avatar_crop_size,
       :avatar,
       :bio,
       :email,
diff --git a/app/models/user.rb b/app/models/user.rb
index 02ff2456f2b..6baf2468ade 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -98,6 +98,9 @@ class User < ActiveRecord::Base
   # Virtual attribute for authenticating by either username or email
   attr_accessor :login
 
+  # Virtual attributes to define avatar cropping
+  attr_accessor :avatar_crop_x, :avatar_crop_y, :avatar_crop_size
+
   #
   # Relations
   #
@@ -163,6 +166,11 @@ class User < ActiveRecord::Base
   validate :owns_public_email, if: ->(user) { user.public_email_changed? }
   validates :avatar, file_size: { maximum: 200.kilobytes.to_i }
 
+  validates :avatar_crop_x, :avatar_crop_y, :avatar_crop_size,
+    numericality: { only_integer: true },
+    presence: true,
+    if: ->(user) { user.avatar? }
+
   before_validation :generate_password, on: :create
   before_validation :restricted_signup_domains, on: :create
   before_validation :sanitize_attrs
diff --git a/app/uploaders/avatar_uploader.rb b/app/uploaders/avatar_uploader.rb
index 6135c3ad96f..2c72df44ff0 100644
--- a/app/uploaders/avatar_uploader.rb
+++ b/app/uploaders/avatar_uploader.rb
@@ -2,11 +2,22 @@
 
 class AvatarUploader < CarrierWave::Uploader::Base
   include UploaderHelper
+  include CarrierWave::MiniMagick
 
   storage :file
 
   after :store, :reset_events_cache
 
+  process :cropper
+
+  def cropper
+    return unless model.respond_to?(:avatar_crop_size) && model.valid?
+
+    manipulate! do |img|
+      img.crop "#{model.avatar_crop_size}x#{model.avatar_crop_size}+#{model.avatar_crop_x}+#{model.avatar_crop_y}"
+    end
+  end
+
   def store_dir
     "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
   end
diff --git a/app/views/profiles/show.html.haml b/app/views/profiles/show.html.haml
index 5051c6bf83b..64c4bdceff9 100644
--- a/app/views/profiles/show.html.haml
+++ b/app/views/profiles/show.html.haml
@@ -90,6 +90,9 @@
             &nbsp;
             %span.file_name.js-avatar-filename File name...
             = f.file_field :avatar, class: "js-user-avatar-input hidden"
+            = f.hidden_field :avatar_crop_x
+            = f.hidden_field :avatar_crop_y
+            = f.hidden_field :avatar_crop_size
             .light The maximum file size allowed is 200KB.
             - if @user.avatar?
               %hr
@@ -99,3 +102,19 @@
   .form-actions
     = f.submit 'Save changes', class: "btn btn-success"
     = link_to "Cancel", user_path(current_user), class: "btn btn-cancel"
+
+.modal.modal-profile-crop
+  .modal-dialog
+    .modal-content
+      .modal-header
+        %button.close{type: 'button', data: {dismiss: 'modal'}}
+          %span
+            &times;
+        %h4.modal-title
+          Crop your new profile picture
+      .modal-body
+        %p
+          %img.modal-profile-crop-image
+      .modal-footer
+        %button.btn.btn-primary.js-upload-user-avatar{:type => "button"}
+          Set new profile picture