Class: Phantom::SVG::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/phantom/svg.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path = nil, options = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/phantom/svg.rb', line 16

def initialize(path = nil, options = {})
  reset

  add_frame_from_file(path, options) if path
end

Instance Attribute Details

#frames ⇒ Object

Returns the value of attribute frames.



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# File 'lib/phantom/svg.rb', line 14

def frames
  @frames
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/phantom/svg.rb', line 14

def height
  @height
end

#loops ⇒ Object

Returns the value of attribute loops.



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# File 'lib/phantom/svg.rb', line 14

def loops
  @loops
end

#skip_first ⇒ Object

Returns the value of attribute skip_first.



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# File 'lib/phantom/svg.rb', line 14

def skip_first
  @skip_first
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/phantom/svg.rb', line 14

def width
  @width
end

Instance Method Details

#add_frame(frame = nil, options = {}) ⇒ Object

Creates a blank frame when no arguments are passed Takes another Phantom::SVG object or file path



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# File 'lib/phantom/svg.rb', line 50

def add_frame(frame = nil, options = {})
  if    frame.nil?                              then @frames << Phantom::SVG::Frame.new
  elsif frame.instance_of?(Phantom::SVG::Frame) then @frames << frame
  elsif frame.instance_of?(Phantom::SVG::Base)  then @frames += frame.frames
  elsif frame.instance_of?(String)              then add_frame_from_file(frame, options)
  end
end

#add_frame_from_file(path, options = {}) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 30

def add_frame_from_file(path, options = {})
  create_file_list(path).each do |file|
    load_file(file, options)
  end
end

#combine(path) ⇒ Object

Combine image.



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# File 'lib/phantom/svg.rb', line 132

def combine(path)
  src = Base.new(path, {unique_ids: true})

  if @width != src.width || @height != src.height
    fail "Can't combine source images of different sizes."
    return
  end

  if @frames.length == 1
    rest_duration = (src.total_duration * 1000).to_i
    @frames[0].duration = rest_duration * 0.001
  elsif src.frames.length == 1
    rest_duration = (total_duration * 1000).to_i
    src.frames[0].duration = rest_duration * 0.001
  else
    rest_duration = (total_duration * 1000).to_i.lcm((src.total_duration * 1000).to_i)
  end

  base_i = src_i = -1
  base_duration = src_duration = 0;
  base_frame = src_frame = nil
  new_frames = []

  begin
    if base_duration == 0
      base_i = (base_i + 1) % @frames.length
      base_frame = @frames[base_i]
      base_duration = (base_frame.duration * 1000).to_i
    end

    if src_duration == 0
      src_i = (src_i + 1) % src.frames.length
      src_frame = src.frames[src_i]
      src_duration = (src_frame.duration * 1000).to_i
    end

    elapsed = [base_duration, src_duration].min

    new_frame = base_frame.clone
    new_frame.duration = elapsed * 0.001
    new_frame.surfaces += src_frame.surfaces
    new_frame.namespaces = src_frame.namespaces.merge(new_frame.namespaces)
    new_frames << new_frame

    base_duration -= elapsed
    src_duration -= elapsed
    rest_duration -= elapsed
  end while rest_duration > 0

  @frames = new_frames
end

#load_file(file, options) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 36

def load_file(file, options)
  case File.extname(file).downcase
  when '.svg'   then  load_from_svg(file, options)
  when '.png'   then  load_from_png(file, options)
  when '.jpg'   then  load_from_jpeg(file, options)
  when '.jpeg'  then  load_from_jpeg(file, options)
  when '.gif'   then  load_from_gif(file, options)
  when '.json'  then  load_from_json(file, options)
  when '.xml'   then  load_from_xml(file, options)
  end
end

#reset ⇒ Object 



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# File 'lib/phantom/svg.rb', line 22

def reset
  @frames = []
  @width = 0
  @height = 0
  @loops = 0
  @skip_first = false
end

#save_apng(path) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 117

def save_apng(path)
  Parser::PNGWriter.new.write(path, self)
end

#save_svg(path) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 97

def save_svg(path)
  set_size

  Parser::SVGWriter.new.write(path, self)
end

#save_svg_frame(path, frame, width = nil, height = nil) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 103

def save_svg_frame(path, frame, width = nil, height = nil)
  old_width = frame.width
  old_height = frame.height
  frame.width = width unless width.nil?
  frame.height = height unless height.nil?

  write_size = Parser::SVGWriter.new.write(path, frame)

  frame.width = old_width
  frame.height = old_height

  write_size
end

#scale_h(height) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 92

def scale_h(height)
  @width = (@width.to_i * height.to_i / @height.to_i).to_i
  @height = height.to_i
end

#scale_w(width) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 87

def scale_w(width)
  @height = (@height.to_i * width.to_i / @width.to_i).to_i
  @width = width.to_i
end

#set_height(height) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 75

def set_height(height)
  if height.nil?
    if @height.nil? || @height == 0
      frames.each do |frame|
        @height = frame.height.to_i if frame.height.to_i > @height
      end
    end
  else
    @height = height
  end
end

#set_size(width = nil, height = nil) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 58

def set_size(width = nil, height = nil)
  set_width(width)
  set_height(height)
end

#set_width(width) ⇒ Object 



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# File 'lib/phantom/svg.rb', line 63

def set_width(width)
  if width.nil?
    if @width.nil? || @width == 0
      frames.each do |frame|
        @width = frame.width.to_i if frame.width.to_i > @width
      end
    end
  else
    @width = width
  end
end

#total_duration ⇒ Object

Calculate and return total duration.



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# File 'lib/phantom/svg.rb', line 122

def total_duration
  result = 0.0
  @frames.each_with_index do |frame, i|
    next if i == 0 && @skip_first
    result += frame.duration
  end
  result
end