gallery/app/uploaders/gallery_uploader.rb

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# encoding: utf-8
module CarrierWave
module Uploader
module Versions
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
end
end
end
class GalleryUploader < CarrierWave::Uploader::Base
# Include RMagick or ImageScience support:
# include CarrierWave::RMagick
# include CarrierWave::ImageScience
include CarrierWave::MiniMagick
# Choose what kind of storage to use for this uploader:
# storage :file
# storage :s3
# Override the directory where uploaded files will be stored.
# This is a sensible default for uploaders that are meant to be mounted:
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
def get_org_url
if have_crop?
model.file.resized.url
else
model.file.url
end
end
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def fix_exif_rotation
manipulate! do |img|
img.tap(&:auto_orient)
end
end
# Provide a default URL as a default if there hasn't been a file uploaded:
# def default_url
# "/images/fallback/" + [version_name, "default.png"].compact.join('_')
# end
# Process files as they are uploaded:
# process :scale => [200, 300]
#
# def scale(width, height)
# # do something
# end
# Create different versions of your uploaded files:
# version :thumb do
# process :scale => [50, 50]
# end
process :resizer
process :optimize
version :resized, :if => :have_crop? do #backup
def full_filename(for_file)
extension = File.extname(super(for_file))
base_name = super(for_file).split('resized_').join('').chomp(extension)
base_name + '_resized'+ extension
end
end
version :crop_from_org, :if => :have_crop? do
process :crop_it
def full_filename(for_file)
super(for_file).split('crop_from_org_').join('')
end
end
version :thumb do
process :convert => 'png', :if => :transparent?
process :pad_process => [200,200]
end
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version :thumb_large do
process :convert => 'png', :if => :transparent?
process :pad_process => [600,600]
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end
version :theater do
process :limit_process => [1920, 1080]
end
version :mobile do
process :limit_process => [1152, 768]
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
# def extension_white_list
# %w(jpg jpeg gif png)
# end
# Override the filename of the uploaded files:
# def filename
# "something.jpg" if original_filename
# end
# def manipulate!
# raise current_path.inspect
# image = ::MiniMagick::Image.open(current_path)
# image = yield(image)
# image.write(current_path)
# ::MiniMagick::Image.open(current_path)
# rescue ::MiniMagick::Error, ::MiniMagick::Invalid => e
# raise CarrierWave::ProcessingError.new("Failed to manipulate with MiniMagick, maybe it is not an image? Original Error: #{e}")
# end
def get_w_and_h
if have_crop?
img = MiniMagick::Image.open(model.file.resized.path)
else
img = MiniMagick::Image.open(model.file.path)
end
[img[:width], img[:height]]
end
def rotate_ang(angle)
if have_crop?
img_path = model.file.resized.path
else
img_path = model.file.path
end
puts img_path
img = MiniMagick::Image.open(img_path)
img.rotate(angle)
puts img
img.write(img_path)
end
def optimize (*arg)
manipulate! do |img|
return img unless img.mime_type.match /image\/jpeg/
img.strip
img.combine_options do |c|
c.quality "90"
c.depth "24"
c.interlace "plane"
end
img
end
end
private
def resizer
size_of_file = size.to_f / (2**20)
if size_of_file > 5
img = MiniMagick::Image.open(path)
img_width = img[:width]
img_height = img[:height]
multiple = [img_width/Math.sqrt(size_of_file/5)/1920,img_height/Math.sqrt(size_of_file/5)/1080].max
if (multiple - multiple.to_i)>0.5
multiple = multiple.to_i + 0.5
else
multiple = multiple.to_i
end
resize_to_limit(multiple*1920,multiple*1080)
else
manipulate! do |img|
img
end
end
end
def limit_process(w,h)
resize_to_limit(w,h)
end
def have_crop?(*arg)
!(model.album_crops.first.nil?)
end
def crop_it
crops = model.album_crops.first
x=(crops.crop_x).to_i.abs.to_s
y=(crops.crop_y).to_i.abs.to_s
w=crops.crop_w.to_i
h=crops.crop_h.to_i
crop_image("#{w}x#{h}+#{x}+#{y}")
end
def crop_image(geometry)
img = MiniMagick::Image.open(model.file.resized.path)
img.crop(geometry)
img.write(model.file.crop_from_org.path)
end
def transparent?(*arg)
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now_album = model.album
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now_album.album_colors.first['color']=='transparent' rescue true
end
def pad_process (w,h)
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now_album = model.album
resize_and_pad(w, h, (transparent? ? :transparent : now_album.album_colors.first['color']), (now_album.resize_gravity rescue 'Center'))
end
end