app/models/resource_picture.rb

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