app/models/resource_picture.rb

   1 class ResourcePicture < ActiveRecord::Base
   2   belongs_to :artist
   3   belongs_to :license
   4   has_many :panel_pictures
   5   belongs_to :original_picture
   6
   7   before_destroy :destroy_with_file
   8
   9   def destroy_with_file
  10     PictureIO.resource_picture_io.delete self.filename
  11     PictureIO.resource_picture_io.class.subdirs.each do |d|
  12       next if d.empty?
  13       PictureIO.resource_picture_io.delete(self.filename, d) if PictureIO.resource_picture_io.exist?(self.filename, d)
  14     end
  15   end
  16
  17   def self.resize(data, dw, dh)
  18     Magick::Image.from_blob(data).shift.resize(dw, dh)
  19   end
  20
  21   #サイズの調整（limw,limhに必ず収まるように合わせる）
  22   def self.fix_size_both(limw, limh, w, h)
  23     wr = if w > limw
  24       limw*100/w
  25     else
  26       100
  27     end
  28     hr = if h > limh
  29       limh*100/h
  30     else
  31       100
  32     end
  33     res = if wr < hr
  34       #幅の方が圧縮率が高い
  35       [w*wr/100, h*wr/100]
  36     else
  37       #高さの方が圧縮率が高い
  38       [w*hr/100, h*hr/100]
  39     end
  40     res
  41   end
  42
  43   def dext
  44     self.ext.downcase
  45   end
  46
  47   def filename
  48     "#{self.id}.#{self.dext}"
  49   end
  50
  51   def mime_type
  52     "image/#{self.dext}"
  53   end
  54
  55   def v(rimg)
  56     rimg.flip.to_blob
  57   end
  58
  59   def h(rimg)
  60     rimg.flop.to_blob
  61   end
  62
  63   def vh(rimg)
  64     rimg.flip.flop.to_blob
  65   end
  66
  67   def url subdir = nil
  68     '/resource_pictures/' + (subdir.to_s.empty? ? '' : subdir.to_s + '/' ) + filename
  69   end
  70
  71   def thumbnail(rimg)
  72     tw, th = ResourcePicture.fix_size_both(80, 80, rimg.columns, rimg.rows)
  73     ResourcePicture.resize(rimg.to_blob, tw, th).to_blob
  74   end
  75
  76   def self.store(img, original_picture)
  77
  78     resource_picture = ResourcePicture.new(
  79       width: original_picture.width, height: original_picture.height,
  80       ext: original_picture.ext, filesize: original_picture.filesize,
  81       original_picture_id: original_picture.id, artist_id: original_picture.artist_id,
  82       license_id: original_picture.license_id
  83     )
  84     res = if resource_picture.save
  85       if resource_picture.store(img)
  86         true
  87       else
  88         false
  89       end
  90     else
  91       false
  92     end
  93     res
  94   end
  95
  96   def store(img)
  97     res = false
  98     bindata = img.to_blob
  99 #    begin
 100       PictureIO.resource_picture_io.put bindata, self.filename
 101       PictureIO.resource_picture_io.class.subdirs.each do |d|
 102         next if d.empty?
 103         PictureIO.resource_picture_io.put(self.__send__(d, img), self.filename, d)
 104       end
 105       res = true
 106 #    rescue
 107 #      res = false
 108 #    end
 109     res
 110   end
 111
 112   def restore(subdir = nil)
 113     PictureIO.resource_picture_io.get self.filename, subdir
 114   end
 115
 116 end