1 # -*- coding: utf-8 -*-
2 ##############################################################################
4 # OpenERP, Open Source Management Solution
5 # Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU Affero General Public License as
9 # published by the Free Software Foundation, either version 3 of the
10 # License, or (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Affero General Public License for more details.
17 # You should have received a copy of the GNU Affero General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 ##############################################################################
24 from report.misc import choice_colors
27 # Draw a graph for stocks
29 class stock_graph(object):
30 def __init__(self, io):
32 self._canvas = canvas.init(fname=io, format='pdf')
33 self._canvas.set_author("OpenERP")
34 self._canvas.set_title("Stock Level Forecast")
39 def add(self, product_id, product_name, datas):
40 if hasattr(product_name, 'replace'):
41 product_name=product_name.replace('/', '//')
42 if product_id not in self._datas:
43 self._datas[product_id] = {}
44 self._names[product_id] = product_name
45 for (dt,stock) in datas:
46 if not dt in self._datas[product_id]:
47 self._datas[product_id][dt]=0
48 self._datas[product_id][dt]+=stock
50 self.val_min = min(self.val_min,dt)
53 self.val_max = max(self.val_max,dt)
56 colors = choice_colors(len(self._datas.keys()))
58 for user in self._datas.keys():
59 user_color[user] = colors.pop()
61 val_min = int(time.mktime(time.strptime(self.val_min,'%Y-%m-%d')))
62 val_max = int(time.mktime(time.strptime(self.val_max,'%Y-%m-%d')))
65 for product_id in self._datas:
66 f = fill_style.Plain()
67 f.bgcolor = user_color[user]
68 datas = self._datas[product_id].items()
69 datas = map(lambda x: (int(time.mktime(time.strptime(x[0],'%Y-%m-%d'))),x[1]), datas)
78 if datas2[-1][0]<d2-1000:
79 datas2.append((d2,datas2[-1][1]))
80 datas2.append((d[0],val))
81 if len(datas2) and datas2[-1][0]<val_max-100:
82 datas2.append((val_max, datas2[-1][1]))
84 datas2.append( (datas2[0][0]+100, datas2[0][1]) )
86 st.color = user_color[product_id]
90 plot = line_plot.T(label=self._names[product_id], data=datas2, line_style=st)
93 interval = max((val_max-val_min)/15, 86400)
94 x_axis = axis.X(format=lambda x:'/a60{}'+time.strftime('%Y-%m-%d',time.gmtime(x)), tic_interval=interval, label=None)
95 ar = area.T(size = (620,435), x_range=(val_min,val_max+1), y_axis = axis.Y(format="%d", label="Virtual Stock (Unit)"), x_axis=x_axis)
103 if __name__ == '__main__':
104 gt = stock_graph('test.pdf')
105 gt.add(1, 'Pomme', [('2005-07-29', 6), ('2005-07-30', -2), ('2005-07-31', 4)])
106 gt.add(2, 'Cailloux', [('2005-07-29', 9), ('2005-07-30', -4), ('2005-07-31', 2)])
110 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: