1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#!/usr/bin/env ruby
#
# Copyright (C) 2023 Ruby-GNOME Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Example from:
# * https://gitlab.gnome.org/GNOME/gtk/-/blob/main/examples/application3/exampleapp.c
# * https://gitlab.gnome.org/GNOME/gtk/-/blob/main/examples/application3/exampleappwin.c
# * https://gitlab.gnome.org/GNOME/gtk/-/blob/main/examples/application3/window.ui
# License: LGPL2.1-or-later
require "gtk4"
class ExampleAppWindow < Gtk::ApplicationWindow
type_register
class << self
def init
template = <<~TEMPLATE
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<template class="ExampleAppWindow" parent="GtkApplicationWindow">
<property name="title" translatable="yes">Example Application</property>
<property name="default-width">600</property>
<property name="default-height">400</property>
<child type="titlebar">
<object class="GtkHeaderBar" id="header">
<child type="title">
<object class="GtkStackSwitcher" id="tabs">
<property name="stack">stack</property>
</object>
</child>
</object>
</child>
<child>
<object class="GtkBox" id="content_box">
<property name="orientation">vertical</property>
<child>
<object class="GtkStack" id="stack"/>
</child>
</object>
</child>
</template>
</interface>
TEMPLATE
set_template(data: template)
bind_template_child("stack")
end
end
def initialize(application)
super(application: application)
end
def open(file)
basename = file.basename
scrolled = Gtk::ScrolledWindow.new
scrolled.hexpand = true
scrolled.vexpand = true
view = Gtk::TextView.new
view.editable = false
view.cursor_visible = false
scrolled.child = view
stack.add_titled(scrolled, basename, basename)
buffer = view.buffer
file.read do |stream|
buffer.text = stream.read.force_encoding(Encoding::UTF_8)
end
end
end
class ExampleApp < Gtk::Application
def initialize
super("org.gtk.exampleapp", :handles_open)
signal_connect "activate" do |application|
window = ExampleAppWindow.new(application)
window.present
end
signal_connect "open" do |application, files, hint|
window = application.windows[0] || ExampleAppWindow.new(application)
files.each do |file|
window.open(file)
end
window.present
end
end
end
app = ExampleApp.new
# Gtk::Application#run needs C style argv ([prog, arg1, arg2, ...,argn]).
# The ARGV ruby variable only contains the arguments ([arg1, arg2, ...,argb])
# and not the program name. We have to add it explicitly.
app.run([$PROGRAM_NAME] + ARGV)
|
