Class: PresentationLoader

Inherits:
Object
  • Object
show all
Includes:
Soby
Defined in:
lib/soby/loader.rb

Defined Under Namespace

Classes: MyVideo

Constant Summary

Constants included from Soby

Soby::SLEEP_TIME

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Soby

auto_update, #create_mat4x4, find_files, find_files_except, #get_angle, #get_global_transform, load_presentation, #read_transform, reload_presentation, start_presentation

Constructor Details

#initialize(app, url) ⇒ PresentationLoader

Returns a new instance of PresentationLoader.



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# File 'lib/soby/loader.rb', line 18

def initialize (app, url)
  @app = app
  @url = url

  @presentation = Presentation.new(app)
  @presentation.url = @url
  load_files
  build_internal
end

Instance Attribute Details

#debug ⇒ Object (readonly)

Returns the value of attribute debug.



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# File 'lib/soby/loader.rb', line 14

def debug
  @debug
end

#graphics ⇒ Object

Returns the value of attribute graphics.



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# File 'lib/soby/loader.rb', line 16

def graphics
  @graphics
end

#presentation ⇒ Object (readonly)

Returns the value of attribute presentation.



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# File 'lib/soby/loader.rb', line 14

def presentation
  @presentation
end

#pshape ⇒ Object

Returns the value of attribute pshape.



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# File 'lib/soby/loader.rb', line 13

def pshape
  @pshape
end

#svg ⇒ Object

Returns the value of attribute svg.



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# File 'lib/soby/loader.rb', line 13

def svg
  @svg
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/soby/loader.rb', line 14

def url
  @url
end

Instance Method Details

#add_group(group, slide) ⇒ Object 



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# File 'lib/soby/loader.rb', line 136

def add_group(group, slide)

  id = slide.title
  refid = slide.refid


  # TODO: Find the bounding box of any  group..
  # TODO: Hide the whole group ?
  surf_max = 0
  biggest_rect = nil

  ## biggest_rect surface..
  group.css("rect").each do |rect|
    #          (group.css("rect") + group.css("image")).each do |rect|

    if biggest_rect == nil
      biggest_rect = rect
    end

    surf_rect = rect.attributes["width"].value.to_i \
    * rect.attributes["height"].value.to_i

    if(surf_rect > surf_max)
      biggest_rect = rect
      surf_max = surf_rect
    end
  end  # rect.each

  rect_id = biggest_rect.attributes["id"].value
  transform = get_global_transform biggest_rect
  slide.set_geometry(biggest_rect, transform[0])

  # The description (code to excute) might be in the group  and not in the rect.
  ## TODO: check if it should really be the first ?
  desc = group.css("desc").first
  title = group.css("title").first

  if desc != nil
    if title == nil || (title.text.match(/animation/) == nil and title.text.match(/video/) == nil)
      puts "Group Description read #{desc.text}"

      slide.description =  desc.text
    end
  end

  e = @pshape.getChild(rect_id)
  # hide the rect
  if e == nil
    puts "Error: rect ID:  #{rect_id} not found "
  else
    @pshape.getChild(rect_id).setVisible(!slide.hide)
  end

  puts "Slide #{id} created from a group, and the rectangle: #{rect_id}"

  @presentation.add_slide(slide)
end

#add_rect_or_image_frame(element, slide) ⇒ Object 



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# File 'lib/soby/loader.rb', line 113

def add_rect_or_image_frame(element, slide)
  id = slide.title
  refid = slide.refid

  # set the geometry &  transformation
  transform = get_global_transform element
  slide.set_geometry(element, transform[0])

  pshape_element = @pshape.getChild(refid)
  # hide the element
  if pshape_element == nil
    puts "Error: rect or Image  ID:  #{refid} not found. CHECK THE PROCESSING VERSION."
  else
    pshape_element.setVisible(!slide.hide) if element.name == "rect"
  end

  ## Debug
  puts "Slide #{id} created from a rect : #{refid}" if element.name == "rect"
  puts "Slide #{id} created from an image: #{refid}" if element.name == "image"
  @presentation.add_slide(slide)
end

#build_internal ⇒ Object 



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# File 'lib/soby/loader.rb', line 37

def build_internal
  puts "Svg null, look for the error... !"  if @svg == nil
  return if @svg == nil

  load_code
  load_frames
  load_videos
  load_animations
end

#create_slide(child) ⇒ Object 



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# File 'lib/soby/loader.rb', line 96

def create_slide child
  slide = Slide.new(child)

  # get the element associated with each slide...
  @svg.search("[id=" + slide.refid + "]").each do |elem|
    case elem.name
    when "rect", "image"
      add_rect_or_image_frame(elem, slide)
    when "g"
      add_group(elem, slide)
    else
      puts "Slide type not supported ! "  + elem.name
    end # end case
  end # search

end

#load_animations ⇒ Object 



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# File 'lib/soby/loader.rb', line 238

def load_animations

  puts "Loading the animations..."

  @svg.css("*").each do |elem|

    valid = false
    elem.children.each do |child|
      valid = true if child.name == "title" && child.text.match(/animation/)
    end

    next unless valid

    id = elem.attributes["id"].value

    # Get the animation information
    t = elem.css("desc").text.split("\n")

    # 1. which slide
    # 2. when
    slide_id = t[0]
    anim_id = t[1].to_i

    animation = OpenStruct.new
    animation.pshape_elem = @pshape.getChild(id)

    puts "Animation found on slide #{slide_id} with element #{animation.pshape_elem}"

    if  @presentation.slides[slide_id] == nil
      puts "Error -> The animation #{id}  is linked to the slide #{slide_id} which is not found !"
    else
      # add the animation
      @presentation.slides[slide_id].add_animation(anim_id, animation)

      # hide the group !
      animation.pshape_elem.setVisible(false) unless animation.pshape_elem == nil
      puts "Animation #{id} loaded with  #{slide_id}"
    end
  end

end

#load_code ⇒ Object 



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# File 'lib/soby/loader.rb', line 47

def load_code
  puts "Loading the code..."

  @svg.css("text").each do |text|

    return if text.attributes["id"] == nil
    id = text.attributes["id"].value       #get the id

    title = text.css("title")
    next if title == nil

    is_code = title.text.match(/code/) != nil
    next unless is_code

    files = text.css("desc").text.split("\n")

    if files == nil
      puts "Source not found, check your includes in svg"
      next
    end

    files.each do |file|

      dir = File.dirname(@url)
      abs_file = dir + "/" + file
      puts ("Loading the code: " + abs_file)
      @presentation.add_source abs_file
      load abs_file
    end

    ## Hide the text to the rendering
    @pshape.getChild(id).setVisible(false)
  end

end

#load_files ⇒ Object 



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# File 'lib/soby/loader.rb', line 28

def load_files
  xml = @app.loadXML(@url)
  @pshape = Java::TechLityReaSvgextended::PShapeSVGExtended.new(xml)

#      PShapeSVGExtended.new(xml)
  @presentation.pshape = @pshape
  @svg = Nokogiri::XML(open(@url)).children[1];
end

#load_frames ⇒ Object 



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# File 'lib/soby/loader.rb', line 83

def load_frames
  puts "Loading the frames..."
  @svg.children.each do |child|
    next unless child.name =~ /frame/

    ## ignore if it references nothing.
    attr = child.attributes
    next if attr["refid"] == nil

    create_slide child
  end # frame
end

#load_videos ⇒ Object 



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# File 'lib/soby/loader.rb', line 197

def load_videos
  # Load the videos...
  puts "Loading the videos..."

  @svg.css("rect").each do |rect|

    return if rect.attributes["id"] == nil
    id = rect.attributes["id"].value       #get the id

    title = rect.css("title")
    next if title == nil

    is_video = title.text.match(/video/) != nil
    next unless is_video

    t = rect.css("desc").text.split("\n")
    slide_id = t[0]
    path = t[1]

    puts ("Loading the video : " + path)

    # Get the transformation
    tr = get_global_transform rect

    video = MyVideo.new(path, @presentation.slides[slide_id], tr[0], tr[1], tr[2])

    if  @presentation.slides[slide_id] == nil
      puts "Error -> The video #{id}  is linked to the slide #{slide_id} which is not found !"
    else

      @presentation.slides[slide_id].add_video(video)
      puts "Video #{id} loaded with  #{slide_id}"
    end

    # Hide the rect, and ... TODO replace it with a special object
    #      @pshape.getChild(id).setVisible(false)
  end
end

#to_s ⇒ Object 



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# File 'lib/soby/loader.rb', line 321

def to_s
  "Presentation loader. "
end