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# Copyright (c) 2003-2005 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
# $Id: colorsel.rb,v 1.4 2005/02/12 23:02:43 kzys Exp $
=begin
= Color Selector
Gtk::ColorSelection lets the user choose a color. Gtk::ColorSelectionDialog
is a prebuilt dialog containing a Gtk::ColorSelection.
=end
require 'common'
module Demo
class ColorSel < BasicWindow
def initialize
super('Color Selection')
@color = Gdk::Color.new(0, 0, 65535)
set_border_width(8)
vbox = Gtk::VBox.new(false, 0)
vbox.set_border_width(8)
add(vbox)
## Create the color swatch area
@frame = Gtk::Frame.new
@frame.set_shadow_type(Gtk::SHADOW_IN)
vbox.pack_start(@frame, true, true, 0)
@da = Gtk::DrawingArea.new
@da.signal_connect('expose_event') do |widget, event|
if widget.window
style = widget.style
widget.window.draw_rectangle(style.bg_gc(Gtk::STATE_NORMAL),
true,
event.area.x, event.area.y,
event.area.width, event.area.height)
end
end
# set a minimum size
@da.set_size_request(200, 200)
# set the color
@da.modify_bg(Gtk::STATE_NORMAL, @color)
@frame.add(@da)
alignment = Gtk::Alignment.new(1.0, 0.5, 0.0, 0.0)
button = Gtk::Button.new('_Change the above color', true)
alignment.add(button)
vbox.pack_start(alignment, false, false, 0)
button.signal_connect('clicked') do
change_color_callback
end
end
def change_color_callback
dialog = Gtk::ColorSelectionDialog.new('Changing color')
dialog.set_transient_for(self)
colorsel = dialog.colorsel
colorsel.set_previous_color(@color)
colorsel.set_current_color(@color)
colorsel.set_has_palette(true)
response = dialog.run
if response == Gtk::Dialog::RESPONSE_OK
@color = colorsel.current_color
@da.modify_bg(Gtk::STATE_NORMAL, @color)
end
dialog.destroy
end
end
end
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