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###############################################################################
# Copyright 2022 Ian McIntosh <ian@openanswers.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
###############################################################################
require 'pathname'
require 'cairo'
require 'delegate'
class Canvas < Cairo::ImageSurface
attr_reader :widget, :height, :width
def initialize (window, width=100, height=100)
super(Cairo::Format::RGB24, height, width)
@cr = Cairo::Context.new(self)
@parent = window
@width = width
@height= height
window.signal_connect('configure-event') { |obj, event| # Widget changed size
@width, @height = event.width, event.height
}
window.signal_connect('draw') { |obj, event| # Widget changed visibility
@redraw_needed = false
}
end
end
# Local Variables:
# tab-width: 2
# End:
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