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Contents
# Copyright (c) 2015 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
=begin
= Color Chooser
A GtkColorChooser lets the user choose a color. There are several
implementations of the GtkColorChooser interface in GTK+. The
GtkColorChooserDialog is a prebuilt dialog containing a
GtkColorChooserWidget.
=end
module ColorselDemo
def self.run_demo(main_window)
color = Gdk::RGBA.new(0, 0, 1, 1)
window = Gtk::Window.new(:toplevel)
window.screen = main_window.screen
window.set_title("Color Chooser")
window.set_border_width(8)
vbox = Gtk::Box.new(:vertical, 8)
vbox.set_border_width(8)
window.add(vbox)
frame = Gtk::Frame.new
frame.set_shadow_type(:in)
vbox.pack_start(frame, :expand => true, :fill => true, :padding => 0)
da = Gtk::DrawingArea.new
da.signal_connect "draw" do |_widget, cr|
cr.set_source(color.to_a)
cr.paint
end
da.set_size_request(200, 200)
frame.add(da)
button = Gtk::Button.new(:mnemonic => "_Change the above color")
button.set_halign(:end)
button.set_valign(:center)
vbox.pack_start(button, :expand => false, :fill => false, :padding => 0)
button.signal_connect "clicked" do |_widget|
dialog = Gtk::ColorChooserDialog.new(:title => "Changing Color",
:parent => window)
dialog.set_modal(true)
dialog.set_rgba(color)
dialog.signal_connect "response" do |widget, response_id|
color = widget.rgba if response_id == Gtk::ResponseType::OK
da.queue_draw # force da to use the new color now
widget.destroy
end
dialog.show_all
end
if !window.visible?
window.show_all
else
window.destroy
end
window
end
end
Version data entries
6 entries across 6 versions & 1 rubygems