# PrintOperation can't change it's page\_setup **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [November 1, 2007, 10:57am UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914 "2007-11-01T10:57:37Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/77aa72/32.png) [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Post date:** [November 1, 2007, 10:57am UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914/1 "2007-11-01T10:57:37Z")
hi, i wanted to eliminate the overhead on the user, who first have to set the page\_setup with Gtk::PrintOperation.run\_page\_setup\_dialog, and then print from the other dialog Gtk::PrintOperation.run(Gtk::PrintOperation::Action::PRINT\_DIALOG). so i used the| |create-custom-widget and custom-widget-apply signals to do that, because i found no other method for it. first i created the page\_size combo and the orientation combo in it, and found out that changing the values messes up the cairo context, so i wrote an example script for this demo, which calls the original run\_page\_setup\_dialog (for simplicity). it’s attached. the usage: 1. run it without changing the page\_setup in the custom tab, print to file. 2. run it and change the page\_setup, and print to file. 3. compare the pdfs. i also attach examples i created. creating and positioning pango layouts works fine. (why) the cairo\_context looses it’s 0,0 coordinates? i checked margins, they looked fine to me (page\_setup selected from the combo brings us the default margins for that format). if i change the page\_setup before i call the PrintOperation.run, than it’s good. please if anyone have any clue drop me an answer. thanks for reading. balint ---
**Author:** ![Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/77aa72/32.png) [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Post date:** [November 5, 2007, 6:55pm UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914/2 "2007-11-05T18:55:34Z")
Kou - since you’re the cairo expert, can you please take a look at this issue, when you have the time. is there a way i could reinitialize the cairo context (or should i?) after changing the page\_setup? thanks in advice ---
**Author:** ![Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/77aa72/32.png) [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Post date:** [November 6, 2007, 2:19pm UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914/3 "2007-11-06T14:19:17Z")
Hi, In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) “Re: [ruby-gnome2-devel-en] PrintOperation can’t change it’s page\_setup” on Mon, 05 Nov 2007 19:53:37 +0200, Dobai-Pataky Bálint [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Kou - since you’re the cairo expert, can you please take a look at this > issue, when you have the time. > is there a way i could reinitialize the cairo context (or should i?) > after changing the page\_setup? You can’t. Use gtk/sample/misc/print.rb style approach. If you want to know details, see gtk/gtkprintoperation-unix.c:handle\_print\_response() in GTK+ source. ## Thanks, kou ---
**Author:** ![Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/77aa72/32.png) [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Post date:** [November 7, 2007, 9:15am UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914/4 "2007-11-07T09:15:46Z")
Mathieu B. wrote: > Dobai-Pataky Bálint wrote: > > > > i wanted to eliminate the overhead on the user, who first have to set > > > the page\_setup with Gtk::PrintOperation.run\_page\_setup\_dialog, and > > > then print from the other dialog > > > Gtk::PrintOperation.run(Gtk::PrintOperation::Action::PRINT\_DIALOG). > > Why do you want to change the cairo context for doing that? because i think that the cairo part of the context gets messed up. (see the previously attached simple code and the resulting pdfs). > In Fantasdic, I have a class Print that extends Gtk::PrintOperation. In > initialize I set the default settings like this: yeah, but you have your app the page\_size set up, and you have it available on your Print::initialize. try to put some page\_setup related settings in the PrintOperation.run’s tabs (or change the page\_setup after the PrintOperation.run was invoked) if you print only PangoLayouts than it’ll work, if you draw to the Cairo context that’ll mess up coordinates. > # with this option disabled, (0,0) is the the upper left corner > > # taking into account margins ! > > self.use\_full\_page = false > self.unit = Gtk::PaperSize::UNIT\_POINTS > > # set default paper size > > page\_setup = Gtk::PageSetup.new > paper\_size = Gtk::PaperSize.new(Gtk::PaperSize.default) > page\_setup.paper\_size\_and\_default\_margins = paper\_size > self.default\_page\_setup = page\_setup i tried this approach for setting the page\_setup, but this works well only in initialize of the PrintOperation. i know you played around with Gtk::PrintOperaion a lot, until you wrote the fantasdic print objects. would you please take a look at the source code attached in my first mail - it’s simple, would you please explain it to me your understanding about it printing A5 portrait? ---
**Author:** ![Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/77aa72/32.png) [@Dobai-Pataky\_BSSSSl](https://www.ruby-forum.com/u/Dobai-Pataky_BSSSSl)\ **Post date:** [November 6, 2007, 9:46pm UTC](https://www.ruby-forum.com/t/printoperation-cant-change-its-page-setup/118914/5 "2007-11-06T21:46:34Z")
Dobai-Pataky Bálint wrote: > > i wanted to eliminate the overhead on the user, who first have to set > > the page\_setup with Gtk::PrintOperation.run\_page\_setup\_dialog, and > > then print from the other dialog > > Gtk::PrintOperation.run(Gtk::PrintOperation::Action::PRINT\_DIALOG). > > Why do you want to change the cairo context for doing that? In Fantasdic, I have a class Print that extends Gtk::PrintOperation. In initialize I set the default settings like this: # with this option disabled, (0,0) is the the upper left corner # taking into account margins ! self.use\_full\_page = false self.unit = Gtk::PaperSize::UNIT\_POINTS # set default paper size page\_setup = Gtk::PageSetup.new paper\_size = Gtk::PaperSize.new(Gtk::PaperSize.default) page\_setup.paper\_size\_and\_default\_margins = paper\_size self.default\_page\_setup = page\_setup For more details: [http://svn.gnome.org/viewvc/fantasdic/trunk/lib/fantasdic/ui/print.rb?revision=218&view=markup](http://svn.gnome.org/viewvc/fantasdic/trunk/lib/fantasdic/ui/print.rb?revision=218&view=markup) In my class MainApp, I have methods to load/save the settings from/to the app config file. Also, when the user clicks on “print”, if a @page\_setup variable exists (either set from the page setup dialog or from the config file), I pass it to my Print object. Otherwise, it’s no problem since default values have been set as explained above. For more details: [http://svn.gnome.org/viewvc/fantasdic/trunk/lib/fantasdic/ui/main\_app.rb?revision=269&view=markup](http://svn.gnome.org/viewvc/fantasdic/trunk/lib/fantasdic/ui/main_app.rb?revision=269&view=markup) In particular, see: - load\_print\_preferences - save\_print\_preferences - on\_print\_setup - on\_print - on\_print\_preview HTH, Mathieu B.