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appwindow.pl
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appwindow.pl
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#!/usr/bin/perl
#
# Application main window
#
# Demonstrates a typical application window, with menubar, toolbar, statusbar.
#
# Perl version by Dave M <dave.nerd@gmail.com>
use strict;
use warnings;
use Gtk3 '-init';
use Glib 'TRUE', 'FALSE';
use constant COLOR_RED => 0;
use constant COLOR_GREEN => 1;
use constant COLOR_BLUE => 2;
use constant SHAPE_SQUARE => 0;
use constant SHAPE_RECTANGLE => 1;
use constant SHAPE_OVAL => 2;
use constant GTK_RESPONSE_OK => -5;
my $window;
my $messagelabel;
my $infobar;
my $registered = FALSE;
my @shape_entries = (
# name, stock id, label, accelerator, tooltip, value
[ "Square", undef, "_Square", "<control>S", "Square", SHAPE_SQUARE ],
[ "Rectangle", undef, "_Rectangle", "<control>R",
"Rectangle", SHAPE_RECTANGLE
],
[ "Oval", undef, "_Oval", "<control>O", "Egg", SHAPE_OVAL ],
);
my @color_entries = (
# name, stock id, label, accelerator, tooltip, value
[ "Red", undef, "_Red", "<control>R", "Blood", COLOR_RED ],
[ "Green", undef, "_Green", "<control>G", "Grass", COLOR_GREEN ],
[ "Blue", undef, "_Blue", "<control>B", "Sky", COLOR_BLUE ],
);
my @entries = (
# name, stock id, label
[ "FileMenu", undef, "_File" ],
[ "PreferencesMenu", undef, "_Preferences" ],
[ "ColorMenu", undef, "_Color" ],
[ "ShapeMenu", undef, "_Shape" ],
[ "HelpMenu", undef, "_Help" ],
[ "OpenMenu", undef, "_Open" ],
[ "New", 'gtk-new',
"_New", "<control>N",
"Create a new file", \&activate_action
],
[ "Open", 'gtk-open', "_Open", "<control>O",
"Open a file", \&activate_action
],
[ "Save", 'gtk-save',
"_Save", "<control>S",
"Save current file", \&activate_action
],
[ "SaveAs", 'gtk-save',
"Save _As...", undef,
"Save to a file", \&activate_action
],
[ "Quit", 'gtk-quit', "_Quit", "<control>Q", "Quit", \&activate_action ],
[ "About", undef, "_About", "<control>A", "About", \&activate_action ],
[ "Logo", "demo-gtk-logo", undef, undef, "GTK+", \&activate_action ],
);
my @toggle_entries = ( [
"Bold", 'gtk-bold', # name, stock id
"_Bold", "<control>B", # label, accelerator
"Bold", # tooltip
\&activate_action, TRUE
], # is_active
[ "DarkTheme", undef, # name, stock id
"_Prefer Dark Theme", undef, # label, accelerator
"Prefer Dark Theme", # tooltip
\&activate_action, FALSE
], # is_active
[ "HideTitlebar", undef,
"_Hide Titlebar when maximized", undef,
"Hide Titlebar when maximized", \&activate_action,
FALSE
] );
do_appwindow();
Gtk3->main();
sub menuitem_cb {
my ( $callback_data, $callback_action, $widget ) = @_;
my $dialog = Gtk3::MessageDialog->new(
$callback_data,
'destroy-with-parent',
'info',
'close',
sprintf "You selected or toggled the menu item: \"%s\"",
Gtk3::ItemFactory->path_from_widget($widget) );
# Close dialog on user response
$dialog->signal_connect( response => sub { $dialog->destroy; 1 } );
$dialog->show;
}
sub toolbar_cb {
my ( $button, $data ) = @_;
my $dialog =
Gtk3::MessageDialog->new( $data, 'destroy-with-parent', 'info',
'close', "You selected a toolbar button" );
# Close dialog on user response
$dialog->signal_connect( response => sub { $_[0]->destroy; 1 } );
$dialog->show;
}
sub register_stock_icons {
if ( !$registered ) {
# https://mail.gnome.org/archives/gtk-perl-list/2012-February/msg00024.html
#my @items = (
#{
# stock_id => "demo-gtk-logo",
# label => "_GTK!",
#}) ;
$registered = TRUE;
# Register our stock items
#Gtk3::Stock->add($items);
# Add our custom icon factory to the list of defaults
my $factory = Gtk3::IconFactory->new;
$factory->add_default;
#
# demo_find_file() looks in the the current directory first,
# so you can run gtk-demo without installing GTK, then looks
# in the location where the file is installed.
#
my $pixbuf = undef;
### my $filename = demo_find_file ("gtk-logo-rgb.gif", undef);
my $filename = "gtk-logo-rgb.gif";
if ($filename) {
eval {
$pixbuf = Gtk3::Gdk::Pixbuf->new_from_file(
#main::demo_find_file($filename) );
demo_find_file($filename) );
# The gtk-logo-rgb icon has a white background, make it transparent
my $transparent =
$pixbuf->add_alpha( TRUE, 0xff, 0xff, 0xff );
my $icon_set = Gtk3::IconSet->new_from_pixbuf($transparent);
$factory->add( "demo-gtk-logo", $icon_set );
};
warn "failed to load GTK logo for toolbar"
if $@;
}
# $factory goes out of scope here, but GTK will hold a reference on it.
}
}
sub get_ui {
return "<ui>
<menubar name='MenuBar'>
<menu action='FileMenu'>
<menuitem action='New'/>
<menuitem action='Open'/>
<menuitem action='Save'/>
<menuitem action='SaveAs'/>
<separator/>
<menuitem action='Quit'/>
</menu>
<menu action='PreferencesMenu'>
<menuitem action='DarkTheme'/>
<menuitem action='HideTitlebar'/>
<menu action='ColorMenu'>
<menuitem action='Red'/>
<menuitem action='Green'/>
<menuitem action='Blue'/>
</menu>
<menu action='ShapeMenu'>
<menuitem action='Square'/>
<menuitem action='Rectangle'/>
<menuitem action='Oval'/>
</menu>
<menuitem action='Bold'/>
</menu>
<menu action='HelpMenu'>
<menuitem action='About'/>
</menu>
</menubar>
<toolbar name='ToolBar'>
<toolitem action='Open'/>
<toolitem action='Quit'/>
<separator/>
<toolitem action='Logo'/>
</toolbar>
</ui>";
}
sub update_statusbar {
my ( $buffer, $statusbar ) = @_;
$statusbar->pop(0);
my $count = $buffer->get_char_count();
my $iter = $buffer->get_iter_at_mark( $buffer->get_insert );
my $row = $iter->get_line;
my $col = $iter->get_line_offset;
my $msg =
sprintf( 'Cursor at row %d column %d - ' . '%d chars in document',
$row, $col, $count );
$statusbar->push( 0, $msg );
}
sub activate_action {
my $action = shift;
my $name = $action->get_name;
if ( $name eq 'DarkTheme' ) {
my $value = $action->get_active;
my $settings = Gtk3::Settings->get_default;
$settings->set( 'gtk-application-prefer-dark-theme', $value );
return;
}
if ( $name eq 'HideTitlebar' ) {
my $value = $action->get_active;
$window->set_hide_titlebar_when_maximized( $value => TRUE );
return;
}
my $dialog =
Gtk3::MessageDialog->new( $window, 'destroy-with-parent', 'info',
'close', 'You activated action "%s"', $name );
$dialog->signal_connect( response => sub { $dialog->destroy } );
$dialog->show();
}
sub activate_radio_action {
my ( $action, $current ) = @_;
my $name = $current->get_name;
my $active = $current->get_active;
my $value = $current->get_current_value;
if ($active) {
my $text = sprintf(
"You activated radio action: \"%s\".\n" . 'Current value: %d',
$name, $value );
$messagelabel->set_text($text);
$infobar->set_message_type(
$value == 0 ? 'GTK_MESSAGE_INFO'
: $value == 1 ? 'GTK_MESSAGE_WARNING'
: $value == 2 ? 'GTK_MESSAGE_QUESTION'
: $value == 3 ? 'GTK_MESSAGE_ERROR'
: $value == 4 ? 'GTK_MESSAGE_OTHER'
: 'GTK_MESSAGE_OTHER'
);
$infobar->show;
}
}
sub mark_set_callback {
my ( $buffer, $new_location, $mark, $data ) = @_;
update_statusbar( $buffer, $data );
}
sub do_appwindow {
register_stock_icons();
$window = Gtk3::Window->new('toplevel');
$window->set_title('Application Window');
$window->signal_connect( destroy => sub { Gtk3->main_quit } );
$window->set_icon_name('gtk-open');
$window->set_default_size( 200, 200 );
my $table = Gtk3::Grid->new;
$window->add($table);
# Create the menubar and toolbar
my $action_group = Gtk3::ActionGroup->new('AppWindowActions');
my $open_action = Gtk3::Action->new(
[ 'Open', '_Open', 'Open a file', 'gtk-open' ] );
$action_group->add_action($open_action);
$action_group->add_actions( \@entries, undef );
$action_group->add_toggle_actions( \@toggle_entries, undef );
$action_group->add_radio_actions( \@color_entries, COLOR_RED,
\&activate_radio_action );
$action_group->add_radio_actions( \@shape_entries, SHAPE_SQUARE,
\&activate_radio_action );
my $ui = Gtk3::UIManager->new();
$ui->insert_action_group( $action_group, 0 );
$window->add_accel_group( $ui->get_accel_group );
my $ui_info = get_ui();
$ui->add_ui_from_string( $ui_info, length($ui_info) );
$table->attach( $ui->get_widget('/MenuBar'), 0, 0, 1, 1 );
$table->attach( $ui->get_widget('/ToolBar'), 0, 1, 1, 1 );
# Create document
$infobar = Gtk3::InfoBar->new;
$infobar->set_no_show_all(TRUE);
$messagelabel = Gtk3::Label->new('');
$messagelabel->show();
$infobar->pack_start( $messagelabel, TRUE, TRUE, 0 );
$infobar->add_button( 'gtk-ok', GTK_RESPONSE_OK );
$infobar->signal_connect(
response => sub {
$infobar->hide();
} );
$infobar->set_halign('fill');
$table->attach( $infobar, 0, 2, 1, 1 );
my $sw = Gtk3::ScrolledWindow->new( undef, undef );
$sw->set_policy( 'automatic', 'automatic' );
$sw->set_shadow_type('in');
$sw->set_halign('fill');
$sw->set_valign('fill');
$sw->set_hexpand(TRUE);
$sw->set_vexpand(TRUE);
$table->attach( $sw, 0, 3, 1, 1 );
my $contents = Gtk3::TextView->new();
$contents->grab_focus();
$sw->add($contents);
# Create statusbar
my $statusbar = Gtk3::Statusbar->new;
$sw->set_halign('fill');
$table->attach( $statusbar, 0, 4, 1, 1 );
# Show text widget info in the statusbar
my $buffer = $contents->get_buffer();
$buffer->signal_connect(
changed => \&update_statusbar,
$statusbar
);
$buffer->signal_connect(
mark_set => \&mark_set_callback,
$statusbar
);
update_statusbar( $buffer, $statusbar );
$window->show_all;
}
sub demo_find_file {
# This is only temporary so it can run stand alone.
my $base = shift;
my $PROGDIR = $0;
return $base if -e $base;
my $filename = $PROGDIR . $base;
die "Cannot find demo data file $base ($filename)\n"
unless -e $filename;
return $filename;
}
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public License
# as published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.