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path: root/screenbuil.py
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# 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 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

### cartoonbuilder
###
### author: Ed Stoner (ed@whsd.net)
### (c) 2007 World Wide Workshop Foundation

import gtk

import theme

class Screen(gtk.DrawingArea):
    def __init__(self):
        gtk.DrawingArea.__init__(self)
        self.gc = None  # initialized in realize-event handler
        self.width  = 0 # updated in size-allocate handler
        self.height = 0 # idem
        self.bgpixbuf = None
        self.fgpixbuf = None
        self.connect('size-allocate', self.on_size_allocate)
        self.connect('expose-event',  self.on_expose_event)
        self.connect('realize',       self.on_realize)

    def on_realize(self, widget):
        self.gc = widget.window.new_gc()
    
    def on_size_allocate(self, widget, allocation):
        self.height = self.width = min(allocation.width, allocation.height)
    
    def on_expose_event(self, widget, event):
        # This is where the drawing takes place
        if self.bgpixbuf:
            pixbuf = self.bgpixbuf
            if pixbuf.get_width != self.width:
                pixbuf = theme.scale(pixbuf, self.width)
            widget.window.draw_pixbuf(self.gc, pixbuf, 0, 0, 0, 0, -1, -1, 0, 0)

        if self.fgpixbuf:
            pixbuf = self.fgpixbuf
            if pixbuf.get_width != self.width:
                pixbuf = theme.scale(pixbuf, self.width)
            widget.window.draw_pixbuf(self.gc, pixbuf, 0, 0, 0, 0, -1, -1, 0, 0)

    def draw(self):
        self.queue_draw()