Initialize new instances
# File lib/rmagick_internal.rb, line 1621 def initialize(*filenames, &block) @images = [] @scene = nil filenames.each { |f| Magick::Image.read(f, &block).each { |n| @images << n } } if length > 0 @scene = length - 1 # last image in array end self end
# File lib/rmagick_internal.rb, line 1380 def *(n) unless n.kind_of? Integer Kernel.raise ArgumentError, "Integer required (#{n.class} given)" end current = get_current() ilist = self.class.new (@images * n).each {|image| ilist << image} ilist.set_current current return ilist end
# File lib/rmagick_internal.rb, line 1391 def <<(obj) is_an_image obj @images << obj @scene = @images.length - 1 self end
Compare ImageLists Compare each image in turn until the result of a comparison is not 0. If all comparisons return 0, then
return if A.scene != B.scene return A.length <=> B.length
# File lib/rmagick_internal.rb, line 1403 def <=>(other) unless other.kind_of? self.class Kernel.raise TypeError, "#{self.class} required (#{other.class} given)" end size = [self.length, other.length].min size.times do |x| r = self[x] <=> other[x] return r unless r == 0 end if @scene.nil? && other.scene.nil? return 0 elsif @scene.nil? && ! other.scene.nil? Kernel.raise TypeError, "cannot convert nil into #{other.scene.class}" elsif ! @scene.nil? && other.scene.nil? Kernel.raise TypeError, "cannot convert nil into #{self.scene.class}" end r = self.scene <=> other.scene return r unless r == 0 return self.length <=> other.length end
# File lib/rmagick_internal.rb, line 1424 def [](*args) a = @images[*args] if a.respond_to?(:each) then ilist = self.class.new a.each {|image| ilist << image} a = ilist end return a end
# File lib/rmagick_internal.rb, line 1434 def []=(*args) obj = @images.[]=(*args) if obj && obj.respond_to?(:each) then is_an_image_array(obj) set_current obj.last.__id__ elsif obj is_an_image(obj) set_current obj.__id__ else set_current nil end return obj end
Ensure respond_to? answers correctly when we are delegating to Image
# File lib/rmagick_internal.rb, line 1465 def clear @scene = nil @images.clear end
# File lib/rmagick_internal.rb, line 1470 def clone ditto = dup ditto.freeze if frozen? return ditto end
override Enumerable#collect
# File lib/rmagick_internal.rb, line 1477 def collect(&block) current = get_current() a = @images.collect(&block) ilist = self.class.new a.each {|image| ilist << image} ilist.set_current current return ilist end
# File lib/rmagick_internal.rb, line 1486 def collect!(&block) @images.collect!(&block) is_an_image_array @images self end
# File lib/rmagick_internal.rb, line 1517 def compact current = get_current() ilist = self.class.new a = @images.compact a.each {|image| ilist << image} ilist.set_current current return ilist end
# File lib/rmagick_internal.rb, line 1526 def compact! current = get_current() a = @images.compact! # returns nil if no changes were made set_current current return a.nil? ? nil : self end
# File lib/rmagick_internal.rb, line 1533 def concat(other) is_an_image_array other other.each {|image| @images << image} @scene = length-1 return self end
Make a deep copy
# File lib/rmagick_internal.rb, line 1493 def copy ditto = self.class.new @images.each { |f| ditto << f.copy } ditto.scene = @scene ditto.taint if tainted? return ditto end
Return the current image
# File lib/rmagick_internal.rb, line 1502 def cur_image if ! @scene Kernel.raise IndexError, "no images in this list" end @images[@scene] end
Set same delay for all images
# File lib/rmagick_internal.rb, line 1541 def delay=(d) if Integer(d) < 0 raise ArgumentError, "delay must be greater than or equal to 0" end @images.each { |f| f.delay = Integer(d) } end
# File lib/rmagick_internal.rb, line 1548 def delete(obj, &block) is_an_image obj current = get_current() a = @images.delete(obj, &block) set_current current return a end
# File lib/rmagick_internal.rb, line 1556 def delete_at(ndx) current = get_current() a = @images.delete_at(ndx) set_current current return a end
# File lib/rmagick_internal.rb, line 1563 def delete_if(&block) current = get_current() @images.delete_if(&block) set_current current self end
# File lib/rmagick_internal.rb, line 1570 def dup ditto = self.class.new @images.each {|img| ditto << img} ditto.scene = @scene ditto.taint if tainted? return ditto end
# File lib/rmagick_internal.rb, line 1578 def eql?(other) is_an_image_array other eql = other.eql?(@images) begin # "other" is another ImageList eql &&= @scene == other.scene rescue NoMethodError # "other" is a plain Array end return eql end
# File lib/rmagick_internal.rb, line 1589 def fill(*args, &block) is_an_image args[0] unless block_given? current = get_current() @images.fill(*args, &block) is_an_image_array self set_current current self end
Override Enumerable's #find_all
# File lib/rmagick_internal.rb, line 1599 def find_all(&block) current = get_current() a = @images.find_all(&block) ilist = self.class.new a.each {|image| ilist << image} ilist.set_current current return ilist end
# File lib/rmagick_internal.rb, line 1609 def from_blob(*blobs, &block) if (blobs.length == 0) Kernel.raise ArgumentError, "no blobs given" end blobs.each { |b| Magick::Image.from_blob(b, &block).each { |n| @images << n } } @scene = length - 1 self end
# File lib/rmagick_internal.rb, line 1633 def insert(index, *args) args.each {|image| is_an_image image} current = get_current() @images.insert(index, *args) set_current current return self end
Call inspect for all the images
# File lib/rmagick_internal.rb, line 1642 def inspect img = [] @images.each {|image| img << image.inspect } img = "[" + img.join(",\n") + "]\nscene=#{@scene}" end
Set the number of iterations of an animated GIF
# File lib/rmagick_internal.rb, line 1649 def iterations=(n) n = Integer(n) if n < 0 || n > 65535 Kernel.raise ArgumentError, "iterations must be between 0 and 65535" end @images.each {|f| f.iterations=n} self end
# File lib/rmagick_internal.rb, line 1658 def last(*args) if args.length == 0 a = @images.last else a = @images.last(*args) ilist = self.class.new a.each {|img| ilist << img} @scene = a.length - 1 a = ilist end return a end
Custom marshal/unmarshal for Ruby 1.8.
# File lib/rmagick_internal.rb, line 1672 def marshal_dump() ary = [@scene] @images.each {|i| ary << Marshal.dump(i)} ary end
# File lib/rmagick_internal.rb, line 1678 def marshal_load(ary) @scene = ary.shift @images = [] ary.each {|a| @images << Marshal.load(a)} end
The ImageList class supports the Magick::Image class methods by simply sending the method to the current image. If the method isn't explicitly supported, send it to the current image in the array. If there are no images, send it up the line. Catch a NameError and emit a useful message.
# File lib/rmagick_internal.rb, line 1688 def method_missing(methID, *args, &block) begin if @scene @images[@scene].send(methID, *args, &block) else super end rescue NoMethodError Kernel.raise NoMethodError, "undefined method `#{methID.id2name}' for #{self.class}" rescue Exception $@.delete_if { |s| /:in `send'$/.match(s) || /:in `method_missing'$/.match(s) } Kernel.raise end end
Create a new image and add it to the end
# File lib/rmagick_internal.rb, line 1704 def new_image(cols, rows, *fill, &info_blk) self << Magick::Image.new(cols, rows, *fill, &info_blk) end
# File lib/rmagick_internal.rb, line 1460 def nitems() @images.nitems() end
# File lib/rmagick_internal.rb, line 1708 def partition(&block) a = @images.partition(&block) t = self.class.new a[0].each { |img| t << img} t.set_current nil f = self.class.new a[1].each { |img| f << img} f.set_current nil [t, f] end
Ping files and concatenate the new images
# File lib/rmagick_internal.rb, line 1720 def ping(*files, &block) if (files.length == 0) Kernel.raise ArgumentError, "no files given" end files.each { |f| Magick::Image.ping(f, &block).each { |n| @images << n } } @scene = length - 1 self end
# File lib/rmagick_internal.rb, line 1731 def pop current = get_current() a = @images.pop # can return nil set_current current return a end
# File lib/rmagick_internal.rb, line 1738 def push(*objs) objs.each do |image| is_an_image image @images << image end @scene = length - 1 self end
Read files and concatenate the new images
# File lib/rmagick_internal.rb, line 1748 def read(*files, &block) if (files.length == 0) Kernel.raise ArgumentError, "no files given" end files.each { |f| Magick::Image.read(f, &block).each { |n| @images << n } } @scene = length - 1 self end
override Enumerable's reject
# File lib/rmagick_internal.rb, line 1760 def reject(&block) current = get_current() ilist = self.class.new a = @images.reject(&block) a.each {|image| ilist << image} ilist.set_current current return ilist end
# File lib/rmagick_internal.rb, line 1769 def reject!(&block) current = get_current() a = @images.reject!(&block) @images = a if !a.nil? set_current current return a.nil? ? nil : self end
# File lib/rmagick_internal.rb, line 1777 def replace(other) is_an_image_array other current = get_current() @images.clear other.each {|image| @images << image} @scene = self.length == 0 ? nil : 0 set_current current self end
# File lib/rmagick_internal.rb, line 1789 def respond_to?(methID, priv=false) return true if __respond_to__?(methID, priv) if @scene @images[@scene].respond_to?(methID, priv) else super end end
# File lib/rmagick_internal.rb, line 1798 def reverse current = get_current() a = self.class.new @images.reverse_each {|image| a << image} a.set_current current return a end
# File lib/rmagick_internal.rb, line 1806 def reverse! current = get_current() @images.reverse! set_current current self end
# File lib/rmagick_internal.rb, line 1813 def reverse_each @images.reverse_each {|image| yield(image)} self end
Allow scene to be set to nil
# File lib/rmagick_internal.rb, line 1341 def scene=(n) if n.nil? Kernel.raise IndexError, "scene number out of bounds" unless @images.length == 0 @scene = nil return @scene elsif @images.length == 0 Kernel.raise IndexError, "scene number out of bounds" end n = Integer(n) if n < 0 || n > length - 1 Kernel.raise IndexError, "scene number out of bounds" end @scene = n return @scene end
# File lib/rmagick_internal.rb, line 1818 def shift current = get_current() a = @images.shift set_current current return a end
# File lib/rmagick_internal.rb, line 1825 def slice(*args) current = get_current() slice = @images.slice(*args) if slice ilist = self.class.new if slice.respond_to?(:each) then slice.each {|image| ilist << image} else ilist << slice end else ilist = nil end return ilist end
# File lib/rmagick_internal.rb, line 1841 def slice!(*args) current = get_current() a = @images.slice!(*args) set_current current return a end
# File lib/rmagick_internal.rb, line 1848 def ticks_per_second=(t) if Integer(t) < 0 Kernel.raise ArgumentError, "ticks_per_second must be greater than or equal to 0" end @images.each { |f| f.ticks_per_second = Integer(t) } end
# File lib/rmagick_internal.rb, line 1855 def to_a a = Array.new @images.each {|image| a << image} return a end
# File lib/rmagick_internal.rb, line 1861 def uniq current = get_current() a = self.class.new @images.uniq.each {|image| a << image} a.set_current current return a end
# File lib/rmagick_internal.rb, line 1869 def uniq!(*args) current = get_current() a = @images.uniq! set_current current return a.nil? ? nil : self end
@scene -> new object
# File lib/rmagick_internal.rb, line 1877 def unshift(obj) is_an_image obj @images.unshift(obj) @scene = 0 self end
# File lib/rmagick_internal.rb, line 1298 def is_an_image(obj) unless obj.kind_of? Magick::Image Kernel.raise ArgumentError, "Magick::Image required (#{obj.class} given)" end true end
Ensure array is always an array of Magick::Image objects
# File lib/rmagick_internal.rb, line 1306 def is_an_image_array(ary) unless ary.respond_to? :each Kernel.raise ArgumentError, "Magick::ImageList or array of Magick::Images required (#{ary.class} given)" end ary.each { |obj| is_an_image obj } true end
Find old current image, update scene number current is the id of the old current image.
# File lib/rmagick_internal.rb, line 1316 def set_current(current) if length() == 0 self.scene = nil return # Don't bother looking for current image elsif scene() == nil || scene() >= length() self.scene = length() - 1 return elsif current != nil # Find last instance of "current" in the list. # If "current" isn't in the list, set current to last image. self.scene = length() - 1 each_with_index do |f,i| if f.__id__ == current self.scene = i end end return end self.scene = length() - 1 end