Re: [ruby-gnome2-devel-en] Displaying web images

[Masafumi Y. <my...@gm...>]

Hi,

2014-05-26 3:54 GMT+09:00 Michael Below <be...@ju...>:
> thanks for your help, this got me a big step further. Now I want to
> display a slideshow: I am retrieving images from flickr into an array,
> and now I want to iterate through those images with #each
>
> My code shows only the last image. Seems like the window is not updated
> while the initial code is run. I would like to force an update at the
> end of each #each iteration. How may I do that? Is there a better way?

A GTK window is just shown when `Gtk.main` is called.
`show_all` sets flag to be displayed to all widgets, but doesn't
actually display until `Gtk.main` is called.

It seems that need to design such as the following:

* Do paging when an event occurred.

    ...
    FlickRaw.api_key=
    FlickRaw.shared_secret=

    @pixbufs = []

    results = flickr.photos.search(:tags => "tag", :per_page => 1)
    results.each {|currentresult|
      ...

      if myheight > 700
        ...
      end

      @pixbufs << currentpixbuf
    }

    update_image(@pixbufs.first)

    # event handler
    signal_connect("key-press-event") do |_widget, event|
      case event.keyval
      when Gdk::Keyval::GDK_KEY_Right
        @pixbufs.push(@pixbufs.shift)
        update_image(@pixbufs.first)
      when Gdk::Keyval::GDK_KEY_Left
        @pixbufs.unshift(@pixbufs.pop)
        update_image(@pixbufs.first)
      end
    end

    # auto mode
    GLib::Timeout.add(1000) do
      @pixbufs.push(@pixbufs.shift)
      update_image(@pixbufs.first)
      true  # continue
    end
  end

  def update_image(currentpixbuf)
    if (defined?(@gtkimage)).nil?
      @gtkimage = Gtk::Image.new  :pixbuf => currentpixbuf
      add @gtkimage
    else
      @gtkimage.set_pixbuf(currentpixbuf)
    end

    show_all
  end
  ...


Thanks,
--
myokoym