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Re: gtk2-perl: how to enable stock images in all widgets

by zentara (Archbishop)
on Oct 02, 2012 at 11:32 UTC ( #996846=note: print w/ replies, xml ) Need Help??


in reply to gtk2-perl: how to enable stock images in all widgets

This means stock images do not show in buttons unless explicitly turned on.

My take on it was it is hard to change the Label of stock image buttons, and most people wanted to be able to label their buttons as they desire. So it is turned off by default. Makes perfect sense to me.

With the way the Gtk2 themeing engine works, it is probable that it would be set in a ./gtkrc-2.0 theme setting.

#!/usr/bin/perl use warnings; use strict; use Glib qw/TRUE FALSE/; use Gtk2 '-init'; # create a new window my $window = Gtk2::Window->new('toplevel'); $window ->signal_connect( "destroy" => sub { Gtk2->main_quit; } ); my $vbox = Gtk2::VBox->new( FALSE, 0 ); $window->add($vbox); $vbox->set_border_width(2); my $button = Gtk2::Button->new_from_stock('gtk-close'); my $button1 = Gtk2::Button->new_from_stock('gtk-close'); my $button2 = Gtk2::Button->new_from_stock('gtk-close'); $button->set_label('uh oh lost icon'); #won't work # sub by muppet find_and_set_label_in ($button2->child, "This worked"); $button->signal_connect( "clicked" => \&callback, "cool button" ); $button1->signal_connect( "clicked" => \&callback, "cool button1" ); $button2->signal_connect( "clicked" => \&callback, "cool button2" ); $vbox->pack_start( $button, FALSE, FALSE, 0 ); $vbox->pack_start( $button1, FALSE, FALSE, 0 ); $vbox->pack_start( $button2, FALSE, FALSE, 0 ); $window->show_all(); Gtk2->main; ################################################## # our usual callback function sub callback { my $widget = shift; my $data = shift; printf "Hello again - %s was pressed\n", $data; } ################################################## sub find_and_set_label_in { #muppet magic my ($widget, $text) = @_; print "@_\n"; if ($widget->isa (Gtk2::Container::)) { $widget->foreach (sub { find_and_set_label_in ($_[0], $text); } +); } elsif ($widget->isa (Gtk2::Label::)) { $widget->set_text ($text); } }

I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh


Comment on Re: gtk2-perl: how to enable stock images in all widgets
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Re^2: gtk2-perl: how to enable stock images in all widgets
by Anonymous Monk on Oct 02, 2012 at 17:15 UTC
    Thank you for this excellent reply. I will study it tomorrow.
      SOLVED

      The "muppet magic" recursion and the found code snippet suggested one way to switch on images for all buttons. A block was that 'isa' did not behave as I expected on buttons. It doesn't distinguish between check buttons and normal buttons for example and misidentifies some other things. I may not be calling it correctly (should be blessed? http://stackoverflow.com/questions/2977775/best-way-to-use-isa-method). Currently I test for a string match in the widget name and filter out check buttons. I call the following on the main top-level window just before showing all:

      sub turn_button_images_on { my $widget = $_[0]; my %buttonimages; if ("$widget->get_name" =~/Button/){ unless ("$widget->get_name" =~/CheckButton/{ print "Widget $widget is a Gtk2 button\n"; $buttonimages{$widget}=$widget->get_settings: $buttonimages{$widget}=$widget->set('gtk-button-images', TRUE +) } } elsif ($widget->isa(Gtk2::Container::)){ $widget->foreach(sub {turn_button_images_on ($_[0]); }); } }
      (This will be an option in case the user doesn't want button images). My system doesn't have a .gtkrc-2.0 on the filesystem. (EDIT: There are gtkrc files in /usr/share/themes but for the Default theme that contains a comment only. Switching themes in my program does not enable button images). Creating ~/.gtkrc-2.0 to try to turn button images on does nothing there at least for gtk2-perl. I suspect this is system-specific. This issue is very similar to that experienced back in 2005 by the OP on this thread where the 2-line code snippet came from: http://www.mail-archive.com/gtk-perl-list@gnome.org/msg01733.html

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