Features/Evince Introspection Bindings

Summary

The pygtk bindings used until F14 to use the evince backend in Read activity, are no longer present in F16. We need use the new gi based bindings

Owner

• Gonzalo Odiard

Current status

• Targeted release: 0.96
• Last updated: 04/11/2011
• Percentage of completion: 80%

Initial information

• The bindings are not ready to use. We need work closely with upstream to solve the remaining issues.

There is a related bug https://bugzilla.gnome.org/show_bug.cgi?id=635705 the evince developers know we need it, and they are working on this. The patches are against evince 3.4 (shipped in F17), after review of the patches, we need look if it can be backported to evince 3.2 to update Fedora 16.

Implementation plan

The first step is port this simple demo to gtk3:

e = evince.View()
docmodel = evince.DocumentModel()
doc = evince.document_factory_get_document('file:///path/to/file/example.pdf')
docmodel.set_document(doc)
e.set_model(model)

With gtk 3 is:

from gi.repository import Gtk, Gio
from gi.repository import EvinceDocument
from gi.repository import EvinceView

class HelloWorldApp(Gtk.Application):
   def __init__(self):
       Gtk.Application.__init__(self, application_id="apps.test.helloevince",
                                flags=Gio.ApplicationFlags.FLAGS_NONE)
       self.connect("activate", self.on_activate)
       
   def on_activate(self, data=None):
       window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
       window.set_title("Evince Gtk3 Python Example")
       window.set_border_width(24)

       scroll = Gtk.ScrolledWindow()
       window.add(scroll)

       EvinceDocument.init()
       doc = EvinceDocument.Document.factory_get_document('file:///home/gonzalo/Desktop/AjedrezyLeyendas-Postmortem.pdf')
       view = EvinceView.View()
       model = EvinceView.DocumentModel()
       model.set_document(doc)
       view.set_model(model)
       scroll.add(view)

       window.show_all()
       self.add_window(window)
   
if __name__ == "__main__":
   app = HelloWorldApp()
   app.run(None)

More information

Not directly related. Evince developers have a request to support epub format [1].

We are implementing our own epub reader displaying it with webkit. If implemented in evince, we can simplify our code a lot.

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