RFQuiltLayout with RubyMotion

collection_view_content.rb

def collectionView(view, numberOfItemsInSection: section)
  boxes.length
end

def boxes
  @boxes ||= 200.times.map do |n|
    {
      height: [1,2,3].sample,
      label: n
    }
  end
end

#...

# RFQuiltLayoutDelegate methods

def blockSizeForItemAtIndexPath(index_path)
  box = boxes[index_path.row]
  CGSizeMake(1, box[:height])
end

def insetsForItemAtIndexPath(index_path)
  UIEdgeInsetsMake(2, 2, 2, 2)
end

collection_view_layout.rb

class ImagesController < UICollectionViewController

  #...

  def self.new(args = {})
    # use RFQuiltLayout for collection view
    layout = RFQuiltLayout.alloc.init
    self.alloc.initWithCollectionViewLayout(layout)
  end

  def viewDidLoad
    #...

    # set the layout's delegate
    layout = collectionView.collectionViewLayout
    layout.delegate = self
    layout.blockPixels = CGSizeMake(75, 75)
  end

  # RFQuiltLayoutDelegate methods

  def blockSizeForItemAtIndexPath(index_path)
    CGSizeMake(1, 2)
  end

  def insetsForItemAtIndexPath(index_path)
    UIEdgeInsetsMake(2, 2, 2, 2)
  end

  #...
end

create-project.text

$ rmq create demo
$ rmq create collection_view_controller images

Gemfile

gem 'motion-cocoapods'

images_cell_stylesheet.diff

 module ImagesCellStylesheet
-  def cell_size
-    {w: 96, h: 96}
-  end
-
   def images_cell(st)
-    st.frame = cell_size
   end

images_controller_stylesheet.diff

 module ImagesControllerStylesheet
   def collection_view(st)
-    st.view.contentInset = [@margin, @margin, @margin, @margin]
     st.background_color = color.white
-
-    st.view.collectionViewLayout.tap do |cl|
-      cl.itemSize = [cell_size[:w], cell_size[:h]]
-      #cl.scrollDirection = UICollectionViewScrollDirectionHorizontal
-      #cl.headerReferenceSize = [cell_size[:w], cell_size[:h]]
-      cl.minimumInteritemSpacing = @margin
-      cl.minimumLineSpacing = @margin
-      #cl.sectionInset = [0,0,0,0]
-    end
   end

install_pods.text

$ pod setup
$ rake pod:install

Rakefile

app.pods do
  pod 'RFQuiltLayout', '~> 1.1.1'
end