[Denemo-devel] Failure to print from the Evince widget

[Richard Shann]

Below is a self-contained test file for printing from the evince widget.
It uses the same code as print.c for the printing, and it works.
I have tried embedding it into Denemo and when I do this it does not
print. It seems that the draw_page signal is not emitted (that is, the
callback which libevince attaches is never called).
I have built a debug version of libevince, and verified that the handler
for draw_page is connected.
Something we are doing in Denemo must be causing this. It is all the
stranger since until now we were using the draw_page signal ourselves to
print from a .png loaded into the print preview window.

If anyone has any idea how this signal might be getting lost I would
like to know.

Richard


#include <stdio.h>
#include <gtk/gtk.h>
#include <evince-view.h>


evince_print() {
        GError *err = NULL;
  GFile       *file;
  gchar *filename = "test.pdf";
  file = g_file_new_for_commandline_arg (filename);
  gchar *uri = g_file_get_uri (file);
  g_object_unref (file);
  EvDocument *doc = ev_document_factory_get_document (uri, &err);
  if(err) {
    g_warning ("Trying to read the pdf file %s gave an error: %s", uri,
err->message);
    if(err)
                        g_error_free (err);
    err = NULL;
  } else {
    EvPrintOperation *printop = ev_print_operation_new (doc);      
    ev_print_operation_run (printop, NULL);
  }
}

int main(int argc, char **argv)
{

  GtkWidget *main_vbox, *top;
  gtk_init(&argc, &argv);
  ev_init();
  GtkWidget *printarea;    
  top = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title(GTK_WINDOW(top), "Evince Print Test");
 

  printarea = gtk_button_new_with_label("click me to print the file
test.pdf");  
  gtk_container_add (GTK_CONTAINER(top), (GtkWidget*)printarea);

  g_signal_connect (G_OBJECT (printarea), "clicked",
                      G_CALLBACK (evince_print), NULL);  
  gtk_widget_show_all(top);  
        gtk_main();
        return 0;
}

//////////////// end of source code
To build use something like

gcc testevince.c -o test -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include 
-I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 
-I/usr/include/gio-unix-2.0/ -I/usr/include/pixman-1 -I/usr/include/freetype2 
-I/usr/include/libpng12 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include     
 -I/usr/include/libxml2   -pthread -I/usr/include/gtksourceview-2.0 
-I/usr/include/libxml2 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include 
-I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 
-I/usr/include/gio-unix-2.0/ -I/usr/include/pixman-1 -I/usr/include/freetype2 
-I/usr/include/libpng12 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include   
-pthread -I/usr/include/librsvg-2 -I/usr/include/glib-2.0 
-I/usr/lib/glib-2.0/include -I/usr/include/gtk-2.0 -I/usr/include/cairo 
-I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12     
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include   
-I/usr/include/evince/2.30 -levview -levdocument

(a lot of that could be omitted I'm sure :)