89 lines
1.9 KiB
Ruby
89 lines
1.9 KiB
Ruby
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=begin
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common.rb - Common class for gtk-demo.
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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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$Id: common.rb,v 1.9 2005/10/15 03:41:36 mutoh Exp $
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=end
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require 'gtk2'
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module Demo
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def self.find_file(basename)
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%w(. /usr/share/gtk-2.0/demo /usr/local/share/gtk-2.0/demo/).each do |dirname|
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path = File.join(dirname, basename)
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if File.exist?(path)
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return path
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end
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end
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raise "#{basename}: No such file or directory"
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end
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class BasicWindow < Gtk::Window
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def initialize(title = nil)
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super(Gtk::Window::TOPLEVEL)
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if title
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set_title("#{title} in Ruby/GTK")
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end
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signal_connect("key_press_event") do |widget, event|
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if event.state.control_mask? and event.keyval == Gdk::Keyval::GDK_q
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destroy
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true
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else
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false
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end
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end
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signal_connect("delete_event") do |widget, event|
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quit
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end
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end
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def quit
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destroy
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true
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end
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end
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class CairoWindow < BasicWindow
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def initialize(title=nil)
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super
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unless Gdk.cairo_available?
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add_cairo_require_label
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return
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end
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drawing_area = Gtk::DrawingArea.new
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add(drawing_area)
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drawing_area.signal_connect("expose_event") do |widget, event|
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cr = widget.window.create_cairo_context
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cr.scale(*widget.window.size)
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cr.set_line_width(0.04)
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cr.save do
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cr.set_source_color(Gdk::Color.new(65535, 65535, 65535))
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cr.gdk_rectangle(Gdk::Rectangle.new(0, 0, 1, 1))
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cr.fill
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end
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draw(cr)
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end
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end
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def add_cairo_require_label
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message = "This sample requires GTK+ 2.8.0 or later and cairo support"
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add(Gtk::Label.new(message))
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end
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def draw(cr)
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raise "not implemented"
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end
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end
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end
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