summaryrefslogtreecommitdiff
path: root/invest-applet/invest/chart.py
blob: e12424a64ab95fbd8e6d9ecfd25827617edb60fd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
#!/usr/bin/env python
from mate_invest.defs import GTK_API_VERSION

import gi
gi.require_version("Gtk", GTK_API_VERSION)
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GdkPixbuf
from gi.repository import GObject
import os
import mate_invest
from gettext import gettext as _
from mate_invest import *
import sys
from os.path import join
import urllib
from threading import Thread
import time

AUTOREFRESH_TIMEOUT = 20*60*1000 # 15 minutes

# based on http://www.johnstowers.co.nz/blog/index.php/2007/03/12/threading-and-pygtk/
class _IdleObject(GObject.GObject):
	"""
	Override GObject.GObject to always emit signals in the main thread
	by emmitting on an idle handler
	"""
	def __init__(self):
		GObject.GObject.__init__(self)

	def emit(self, *args):
		GObject.idle_add(GObject.GObject.emit,self,*args)

class ImageRetriever(Thread, _IdleObject):
	"""
	Thread which uses gobject signals to return information
	to the GUI.
	"""
	__gsignals__ =  { 
			"completed": (
				GObject.SignalFlags.RUN_LAST, None, []),
			# FIXME: should we be making use of this?
			#"progress": (
			#	GObject.SignalFlags.RUN_LAST, None, [
			#	GObject.TYPE_FLOAT])        #percent complete
			}

	def __init__(self, image_url):
		Thread.__init__(self)
		_IdleObject.__init__(self)	
		self.image_url = image_url
		self.retrieved = False
		
	def run(self):
		self.image = Gtk.Image()
		try: sock = urllib.urlopen(self.image_url, proxies = mate_invest.PROXY)
		except Exception, msg:
			mate_invest.debug("Error while opening %s: %s" % (self.image_url, msg))
		else:
			loader = GdkPixbuf.PixbufLoader()
			loader.connect("closed", lambda loader: self.image.set_from_pixbuf(loader.get_pixbuf()))
			loader.write(sock.read())
			sock.close()
			loader.close()
			self.retrieved = True
		self.emit("completed")

# p:
#  eX = Exponential Moving Average
#  mX = Moving Average
#  b = Bollinger Bands Overlay
#  v = Volume Overlay
#  p = Parabolic SAR overlay
#  s = Splits Overlay
# q:
#  l = Line
#  c = Candles
#  b = Bars
# l:
#  on = Logarithmic
#  off = Linear
# z:
#  l = Large
#  m = Medium
# t:
#  Xd = X Days
#  Xm = X Months
#  Xy = X Years
# a:
#  fX = MFI X days
#  ss = Slow Stochastic
#  fs = Fast Stochastic
#  wX = W%R X Days
#  mX-Y-Z = MACD X Days, Y Days, Signal
#  pX = ROC X Days
#  rX = RSI X Days
#  v = Volume
#  vm = Volume +MA
# c:
#  X = compare with X
#

class FinancialChart:
	def __init__(self, ui):
		self.ui = ui
		
		#Time ranges of the plot (parameter / combo-box t)
		self.time_ranges = ["1d", "5d", "3m", "6m", "1y", "5y", "my"]
		
		#plot types (parameter / combo-box q)
		self.plot_types = ["l", "b", "c"]

		#plot scales (parameter / combo-box l)
		self.plot_scales = ["off", "on"]

		# Window Properties
		win = ui.get_object("window")
		win.set_title(_("Financial Chart"))
		
		try:
			pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(join(mate_invest.ART_DATA_DIR, "invest_neutral.svg"), 96,96)
			self.ui.get_object("plot").set_from_pixbuf(pixbuf)
		except Exception, msg:
			mate_invest.debug("Could not load 'invest-neutral.svg' file: %s" % msg)
			pass
		
		# Defaut comboboxes values
		for widget in ["t", "q", "l"]:
			ui.get_object(widget).set_active(0)
		
		# Connect every option widget to its corresponding change signal	
		symbolentry = ui.get_object("s")
		refresh_chart_callback = lambda w: self.on_refresh_chart()
		
		for widgets, signal in [
			(("pm5","pm10","pm20","pm50","pm100","pm200",
			"pe5","pe10", "pe20","pe50","pe100","pe200",
			"pb","pp","ps","pv",
			"ar","af","ap","aw","am","ass","afs","av","avm"), "toggled"),
			(("t", "q", "l"), "changed"),
			(("s",), "activate"),
		]:
			for widget in widgets:
				ui.get_object(widget).connect(signal, refresh_chart_callback)
		
		ui.get_object("progress").hide()
		
		# Connect auto-refresh widget
		self.autorefresh_id = 0
		ui.get_object("autorefresh").connect("toggled", self.on_autorefresh_toggled)
										
	def on_refresh_chart(self, from_timer=False):
		tickers = self.ui.get_object("s").get_text()
			
		if tickers.strip() == "":
			return True
		
		# FIXME: We don't just do US stocks, so we can't be this
		# simplistic about it, but it is a good idea.
		#if from_timer and not ustime.hour_between(9, 16):
		#	return True
			
		tickers = [ticker.strip().upper() for ticker in tickers.split(' ') if ticker != ""]
		
		# Update Window Title ------------------------------------------------------
		win = self.ui.get_object("window")
		title = _("Financial Chart - %s")
		titletail = ""
		for ticker in tickers:
			titletail += "%s / " % ticker
		title = title % titletail
		
		win.set_title(title[:-3])

		# Detect Comparison or simple chart ----------------------------------------
		opt = ""
		for ticker in tickers[1:]:
			opt += "&c=%s" % ticker
		
		# Create the overlay string ------------------------------------------------
		p = ""
		for name, param in [
			("pm5",   5),
			("pm10",  10),
			("pm20",  20),
			("pm50",  50),
			("pm100", 100),
			("pm200", 200),
			("pe5",   5),
			("pe10",  10),
			("pe20",  20),
			("pe50",  50),
			("pe100", 100),
			("pe200", 200),
			("pb", ""),
			("pp", ""),
			("ps", ""),
			("pv", ""),
		]:
			if self.ui.get_object(name).get_active():
				p += "%s%s," % (name[1], param)
			
		# Create the indicators string ---------------------------------------------
		a = ""
		for name, param in [
			("ar",  14),
			("af",  14),
			("ap",  12),
			("aw",  14),
			("am",  "26-12-9"),
			("ass", ""),
			("afs", ""),
			("av",  ""),
			("avm", ""),
		]:
			if self.ui.get_object(name).get_active():
				a += "%s%s," % (name[1:], param)
		
		# Create the image URL -----------------------------------------------------
		chart_base_url = "http://chart.finance.yahoo.com/z?s=%(s)s&t=%(t)s&q=%(q)s&l=%(l)s&z=%(z)s&p=%(p)s&a=%(a)s%(opt)s"
		url = chart_base_url % {
			"s": tickers[0],
			"t": self.time_ranges[self.ui.get_object("t").get_active()],
			"q": self.plot_types[self.ui.get_object("q").get_active()],
			"l": self.plot_scales[self.ui.get_object("l").get_active()],
			"z": "l",
			"p": p,
			"a": a,
			"opt": opt,
		}

		# Download and display the image -------------------------------------------	
		progress = self.ui.get_object("progress")
		progress.set_text(_("Opening Chart"))
		progress.show()
		
		image_retriever = ImageRetriever(url)
		image_retriever.connect("completed", self.on_retriever_completed)
		image_retriever.start()

		# Update timer if needed
		self.on_autorefresh_toggled(self.ui.get_object("autorefresh"))
		return True
	
	def on_retriever_completed(self, retriever):
		self.ui.get_object("plot").set_from_pixbuf(retriever.image.get_pixbuf())
		progress = self.ui.get_object("progress")
		if retriever.retrieved == True:
			progress.set_text(_("Chart downloaded"))
		else:
			progress.set_text(_("Chart could not be downloaded"))
	
	def on_autorefresh_toggled(self, autorefresh):
		if self.autorefresh_id != 0:
			GObject.source_remove(self.autorefresh_id)
			self.autorefresh_id = 0
			
		if autorefresh.get_active():
			self.autorefresh_id = GObject.timeout_add(AUTOREFRESH_TIMEOUT, self.on_refresh_chart, True)

def show_chart(tickers):
	ui = Gtk.Builder();
	ui.add_from_file(os.path.join(mate_invest.BUILDER_DATA_DIR, "financialchart.ui"))
	chart = FinancialChart(ui)
	ui.get_object("s").set_text(' '.join(tickers))
	chart.on_refresh_chart()
	return ui.get_object("window")