ruby-****@sourc*****
ruby-****@sourc*****
2012年 9月 14日 (金) 06:04:19 JST
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REMOTE_ADDR = 184.145.80.187
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/hiki.cgi?tut-gtk2-txtw-scrolledwin
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@@ -169,31 +169,29 @@
#!/usr/bin/env ruby
require 'gtk2'
-
- def button_clicked(b)
- puts "Button (#{b.label}) pressed"
- end
- window = Gtk::Window.new("Scrolled Window & Viewport")
+
+ window = Gtk::Window.new("Scrlld. Viewports With Two Tables")
window.resizable = true
window.border_width = 10
window.signal_connect('destroy') { Gtk.main_quit }
window.set_size_request(350, 300)
+
table1 = Gtk::Table.new(10, 10, true)
table2 = Gtk::Table.new(10, 10, true)
table1.row_spacings = 5
table2.row_spacings = 5
table1.column_spacings = 5
table2.column_spacings = 5
-
+
options = Gtk::EXPAND|Gtk::FILL
x = 10; y = 10
- # Pack each table with 100 buttons. */
+ # Pack each table with 100 buttons.
x.times do |i|
y.times do |j|
- b1 = Gtk::Button.new("V:%2d,%2d" % [i,j])
- b2 = Gtk::Button.new("S:%2d,%2d" % [i,j])
- b1.signal_connect('clicked') { |w| button_clicked(w) }
- b2.signal_connect('clicked') { |w| button_clicked(w) }
+ b1 = Gtk::Button.new("S:%2d,%2d" % [i,j])
+ b2 = Gtk::Button.new("V:%2d,%2d" % [i,j])
+ b1.signal_connect('clicked') { |w| puts "Button (#{w.label}) pressed" }
+ b2.signal_connect('clicked') { |w| puts "Button (#{w.label}) pressed" }
# child, x1, x2, y1, y2, x-opt, y-opt, xpad, ypad
table1.attach(b1, i, i + 1, j, j + 1, options, options, 0, 0)
table2.attach(b2, i, i + 1, j, j + 1, options, options, 0, 0)
@@ -202,25 +200,30 @@
# Create a scrolled window and a viewport, each with one table.
# Use the adjustments in the scrolled window to synchronize
# both containers.
- swin = Gtk::ScrolledWindow.new
+ swin = Gtk::ScrolledWindow.new
swin.border_width = 5
+ # Gtk::POLICY_ALWAYS/Gtk::POLICY_AUTOMATIC ... when to show scrollbars
swin.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_ALWAYS)
swin.add_with_viewport(table1)
- horizontal = swin.hadjustment
- vertical = swin.vadjustment
- viewport = Gtk::Viewport.new(horizontal, vertical)
+ # Connect {{ swin }} scrollbars to {{ viewport }}
+ viewport = Gtk::Viewport.new(swin.hadjustment, swin.vadjustment)
+
+ # Creates new adjustment (not connected as above), but seems better
+ # viewport = Gtk::Viewport.new(nil, nil) # better than above
+
viewport.border_width = 5
viewport.add(table2)
-
+
# Pack the widgets into a GtkVBox and then into the window.
vbox = Gtk::VBox.new(true, 5)
- vbox.pack_start_defaults(viewport)
+
vbox.pack_start_defaults(swin)
-
+ vbox.pack_start_defaults(viewport)
+
window.add(vbox)
window.show_all
Gtk.main
+
+
The scrolled window is simply a container with scrollbars. Neither the container nor the scrollbars perform any action by themselves. Scrolling is handled by the child widget, which is why the child widget must have a scrolling support. As you know by now, most GTK+ widgets originally do not include such a support - we mentioned only four that do (Gtk::TextView, Gtk::TreeView, Gtk::IconView, or Gtk::Layout). For all these other widgets, without native scrolling support, scrolling behaviour is added with the help of portview.