119 lines
3.5 KiB
Ruby
119 lines
3.5 KiB
Ruby
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# Copyright (c) 2003-2005 Ruby-GNOME2 Project Team
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# This program is licenced under the same licence as Ruby-GNOME2.
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#
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# $Id: sizegroup.rb,v 1.5 2005/02/12 23:02:43 kzys Exp $
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=begin
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= Size Groups
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Gtk::SizeGroup provides a mechanism for grouping a number of
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widgets together so they all request the same amount of space.
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This is typically useful when you want a column of widgets to
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have the same size, but you can't use a Gtk::Table widget.
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Note that size groups only affect the amount of space requested,
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not the size that the widgets finally receive. If you want the
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widgets in a Gtk::SizeGroup to actually be the same size, you need
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to pack them in such a way that they get the size they request
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and not more. For example, if you are packing your widgets
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into a table, you would not include the Gtk::FILL flag.
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=end
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require 'common'
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module Demo
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class SizeGroup < Gtk::Dialog
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def initialize
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super('GtkSizeGroup', nil, 0,
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[Gtk::Stock::CLOSE, Gtk::Dialog::RESPONSE_NONE])
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color_options = %w(Red Green Blue)
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dash_options = %w(Solid Dashed Dotted)
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end_options = %w(Square Round Arrow)
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set_resizable(false)
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signal_connect('response') do
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destroy
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end
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vbox = Gtk::VBox.new(false, 5)
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self.vbox.pack_start(vbox, true, true, 0)
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vbox.set_border_width(5)
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size_group = Gtk::SizeGroup.new(Gtk::SizeGroup::HORIZONTAL)
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## Create one frame holding color options
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frame = Gtk::Frame.new('Color Options')
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vbox.pack_start(frame, true, true, 0)
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table = Gtk::Table.new(2, 2, false)
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table.set_border_width(5)
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table.set_row_spacings(5)
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table.set_column_spacings(10)
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frame.add(table)
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add_row(table, 0, size_group, '_Foreground', color_options)
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add_row(table, 1, size_group, '_Background', color_options)
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## And another frame holding line style options
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frame = Gtk::Frame.new('Line Options')
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vbox.pack_start(frame, false, false, 0)
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table = Gtk::Table.new(2, 2, false)
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table.set_border_width(5)
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table.set_row_spacings(5)
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table.set_column_spacings(10)
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frame.add(table)
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add_row(table, 0, size_group, '_Dashing', dash_options)
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add_row(table, 1, size_group, '_Line ends', end_options)
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# And a check button to turn grouping on and off
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check_button = Gtk::CheckButton.new('_Enable grouping', true)
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vbox.pack_start(check_button, false, false, 0)
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check_button.set_active(true)
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check_button.signal_connect('toggled', size_group) do |check_button, size_group|
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new_mode = if check_button.active?
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Gtk::SizeGroup::HORIZONTAL
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else
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Gtk::SizeGroup::VERTICAL
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end
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size_group.set_mode(new_mode)
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end
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end
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def add_row(table, row, size_group, label_text, options)
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label = Gtk::Label.new(label_text, true)
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label.set_alignment(0, 1)
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table.attach(label,
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0, 1, row, row + 1,
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Gtk::EXPAND | Gtk::FILL, 0,
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0, 0)
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option_menu = create_option_menu(options)
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label.set_mnemonic_widget(option_menu)
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size_group.add_widget(option_menu)
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table.attach(option_menu,
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1, 2, row, row + 1,
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0, 0,
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0, 0)
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end
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def create_option_menu(strings)
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menu = Gtk::Menu.new
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strings.each do |str|
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menu_item = Gtk::MenuItem.new(str)
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menu_item.show
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menu.append(menu_item)
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end
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option_menu = Gtk::OptionMenu.new
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option_menu.set_menu(menu)
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return option_menu
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end
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end
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end
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