#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2012 S. Daniel Francis <francis@sugarlabs.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 3 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 Street, Fifth Floor, Boston,
# MA 02110-1301, USA.

import gtk

from track import Track


class StaffCanvas(gtk.Fixed):
    height = 0
    width = 0
    tracks = []

    def __init__(self):
        gtk.Fixed.__init__(self)
        self.connect('expose-event', self.resize_area)
        self.area = gtk.DrawingArea()
        self.area.modify_bg(gtk.STATE_NORMAL, gtk.gdk.color_parse('#FFF'))
        self.area.connect('expose-event', self._expose_event_cb)
        self.tracks.append(Track())
        self.put(self.area, 0, 0)
        self.area.show()

    def resize_area(self, widget, event):
        self.width, self.height = event.area[2], event.area[3]
        self.area.set_size_request(self.width, self.height)

    def _expose_event_cb(self, widget, event):
        window = widget.get_window()
        context = widget.create_pango_context()
        width = event.area[2]
        height = event.area[3]
        for track in self.tracks:
            track.linespacing = height * 0.025
            track.draw(window, width, context)