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#!/usr/bin/env ruby
=begin
textbuffer_serialize.rb - Ruby/GTK sample script.
Copyright (c) 2006 Ruby-GNOME2 Project Team
This program is licenced under the same licence as Ruby-GNOME2.
$Id: textbuffer_serialize.rb,v 1.1 2006/11/23 08:39:13 mutoh Exp $
=end
require 'gtk3'
if str = Gtk.check_version(2, 10, 0)
puts "This sample requires GTK+ 2.10.0 or later"
puts str
exit
end
current_folder = ENV['HOME'] || "."
file_name = "serialized.dat"
textview = Gtk::TextView.new
textview.set_size_request(600, 400)
buffer = textview.buffer
buffer.text = DATA.read
format = buffer.serialize_formats[0]
buffer.register_serialize_target(nil)
buffer.register_deserialize_target(nil)
window = Gtk::Window.new("Gtk::TextBuffer Serialize Demo")
vbox = Gtk::VBox.new
serialize_button = Gtk::FileChooserButton.new("Serialize to a file",
Gtk::FileChooser::ACTION_OPEN)
deserialize_button = Gtk::FileChooserButton.new("Serialize to a file",
Gtk::FileChooser::ACTION_OPEN)
serialize_button.current_folder = current_folder
deserialize_button.current_folder = current_folder
toolbar = Gtk::Toolbar.new
toolbar.append(Gtk::Stock::OPEN, "Deserialize from a file") do
dialog = Gtk::FileChooserDialog.new("Deserialize from a file",
window,
Gtk::FileChooser::ACTION_OPEN,
nil,
[Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL],
[Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT])
dialog.filename = File.expand_path(file_name)
if dialog.run == Gtk::Dialog::RESPONSE_ACCEPT
file_name = dialog.filename
File.open(file_name, "rb") {|io|
buffer.delete(buffer.start_iter, buffer.end_iter)
buffer.deserialize(buffer, format, buffer.start_iter, io.read)
}
end
dialog.destroy
end
toolbar.append(Gtk::Stock::SAVE, "Serialize to a file") do
dialog = Gtk::FileChooserDialog.new("Serialize from a file",
window,
Gtk::FileChooser::ACTION_SAVE,
nil,
[Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL],
[Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT])
dialog.current_name = file_name
if dialog.run == Gtk::Dialog::RESPONSE_ACCEPT
file_name = dialog.filename
File.open(file_name, "wb") {|io|
io.write(buffer.serialize(buffer, format, buffer.start_iter, buffer.end_iter))
}
end
dialog.destroy
end
toolbar.append(Gtk::Stock::CLEAR, "Clear all") do
buffer.delete(buffer.start_iter, buffer.end_iter)
end
toolbar.append_space
toolbar.append(Gtk::Stock::SELECT_COLOR, "Color the region") do
dialog = Gtk::ColorSelectionDialog.new("Color the region")
if dialog.run == Gtk::Dialog::RESPONSE_OK
bounds = buffer.selection_bounds
color = dialog.colorsel.current_color
tag_name = color.to_a.inspect
unless tag = buffer.tag_table.lookup(tag_name)
tag = Gtk::TextTag.new(tag_name).set_foreground_gdk(color)
end
buffer.tag_table.add(tag)
buffer.apply_tag(tag, bounds[0], bounds[1])
end
dialog.destroy
end
toolbar.append(Gtk::Stock::SELECT_FONT, "Set a font to the region") do
dialog = Gtk::FontSelectionDialog.new("Set font to the region")
if dialog.run == Gtk::Dialog::RESPONSE_OK
bounds = buffer.selection_bounds
font = dialog.font_name
unless tag = buffer.tag_table.lookup(font)
tag = Gtk::TextTag.new(font).set_font(font)
end
buffer.tag_table.add(tag)
buffer.apply_tag(tag, bounds[0], bounds[1])
end
dialog.destroy
end
toolbar.append_space
toolbar.append(Gtk::Stock::QUIT, "Quit this application") do
Gtk.main_quit
end
vbox.pack_start(toolbar, false, false).add(Gtk::ScrolledWindow.new.add(textview))
window.add(vbox)
window.show_all
window.signal_connect("destroy") { Gtk.main_quit }
Gtk.main
__END__
This is a sample script for rich text serialization/deserialization.
1. Edit this text using font/color buttons.
2. Click save button and save this text (= serialize this as rich text to a file)
3. Click clear button and clear this text buffer.
4. Click load button and load the file which you save (= deserialize this).
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