Hi,
quoting from [1]:
init blocks do not have any parameters. A construct block is
used to define a creation method which requires parameters.
You need to use new PoppleSample(), without parameters. If you need to
pass some parameters, then you need to define a "construct" block. Hope
it was clear enough...
cheers
alberto
[1]
http://live.gnome.org/Genie#head-fa4a76035d436d5e8d25288f418324dc3f965696
On Fri, 2009-05-22 at 12:56 +0200, Nicolas wrote:
> Hi,
>
> I try to port simple pdf viewer from vala to genie.
>
> But i have this error:
>
> pdfview.gs:53.18-53.44: error: Too many arguments, method
> `PopplerSample.new' does not take 1 arguments
> var sample = new PopplerSample (args[1])
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Compilation failed: 1 error(s), 0 warning(s)
>
> What's wrong in code ?
>
> [indent=4]
>
> /* Build with valac --pkg gtk+-2.0 --pkg poppler-glib yourfile.gs */
>
> uses
> Gtk
> Poppler
>
> class PopplerSample : Window
> document : Poppler.Document
> image : Image
> index:int = 0
> init
> title = "Simple PDF Viewer"
> default_height = 350
> default_width = 500
> window_position = WindowPosition.CENTER
> destroy += Gtk.main_quit
>
> def PopplerSample (pdf_filename : string)
> try
> this.document = new Poppler.Document.from_file
> (Filename.to_uri (pdf_filename), "");
> except e:OptionError
> print ("%s", e.message)
> // Create an image and render first page to image
> var pixbuf = new Gdk.Pixbuf (Gdk.Colorspace.RGB, false, 8, 800,
> 600);
> this.image = new Image.from_pixbuf (pixbuf);
> render_page ()
> add (this.image)
> this.key_press_event += on_key_pressed
> this.destroy += Gtk.main_quit
>
> def private on_key_pressed (source : PopplerSample, key :
> Gdk.EventKey) : bool
> if (key.str is "q")
> Gtk.main_quit ()
> // Render the next page, or the first if we were at the last
> this.index++
> this.index %= this.document.get_n_pages ()
> render_page ()
> return false
>
> def private render_page ()
> var pixbuf = this.image.get_pixbuf ()
> var page = this.document.get_page (this.index)
> page.render_to_pixbuf (0, 0, 800, 600, 1.0, 0, pixbuf)
> this.image.set_from_pixbuf (pixbuf)
>
>
> init
> if (args.length != 2)
> print ("Usage: %s /full/path/to/some.pdf\n", args[0])
> Gtk.init (ref args)
> var sample = new PopplerSample (args[1])
> sample.show_all ()
> Gtk.main ()
>
> Thank you in advance,
> Nicolas.
>
>
> This email has been scanned for all viruses by the MessageLabs Email
> Security System.
--
Alberto Colombo, MSc
PhD student at Digital Imaging Research Centre
Kingston University, London
e-mail: [email protected]
phone: +44 (0)20 8547 8642
http://cism.kingston.ac.uk/people/details.php?AuthorID=925
This email has been scanned for all viruses by the MessageLabs Email
Security System.
_______________________________________________
Vala-list mailing list
[email protected]
http://mail.gnome.org/mailman/listinfo/vala-list
