3 # Copyright (C) 2004, 2005 Richard Kettlewell
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 # THIS PROGRAM IS NO LONGER MAINTAINED.
21 # It worked last time I tried running it, but all client maintenance
22 # effort is now devoted to the web interface and the GTK+ client
25 """Graphical user interface for DisOrder"""
38 ########################################################################
42 # The main (initial) thread of the program runs all GUI code. The GUI is only
43 # directly modified from inside this thread. We sometimes call this the
46 # We have a background thread, MonitorStateThread, which waits for changes to
47 # the server's state which we care about. Whenever such a change occurs it
48 # notifies all the widgets which care about it (and possibly other widgets;
49 # the current implementation is unsophisticated.)
51 # Widget poll() methods usually, but NOT ALWAYS, called in the
52 # MonitorStateThread. Other widget methods are call in the master thread.
54 # We have a separate disorder.client for each thread rather than locking a
55 # single client. MonitorStateThread also has a private disorder.client that
56 # it uses to watch for server state changes.
58 ########################################################################
61 # communication queue into thread containing Tk event loop
63 # Sets up a callback on the event loop (in this thread) which periodically
64 # checks the queue for elements; if any are found they are executed.
65 def __init__(self, master):
66 self.q = Queue.Queue();
72 item = self.q.get_nowait()
74 self.master.after_idle(self.poll)
76 self.master.after(100, self.poll)
81 ########################################################################
83 class ProgressBar(Canvas):
85 def __init__(self, master=None, **kw):
86 Canvas.__init__(self, master, highlightthickness=0, **kw)
87 self.outer = self.create_rectangle(0, 0, 0, 0,
91 self.bar = self.create_rectangle(0, 0, 0, 0,
97 self.bind("<Configure>", lambda e: self.redisplay())
99 def update(self, current, total):
100 self.current = current
114 w, h = self.winfo_width(), self.winfo_height()
116 self.coords(self.outer, 0, 0, w - 1, h - 1)
118 bw = int((w - 2) * self.current / self.total)
119 self.itemconfig(self.bar,
122 self.coords(self.bar, 1, 1, bw, h - 2)
124 self.itemconfig(self.bar,
127 self.coords(self.bar, 1, 1, w - 2, h - 2)
129 # look up a track's name part, using client c. Maintains a cache.
131 def part(c, track, context, part):
132 key = "%s-%s-%s" % (part, context, track)
134 if not part_cache.has_key(key) or part_cache[key]['when'] < now - 3600:
135 part_cache[key] = {'when': now,
136 'what': c.part(track, context, part)}
137 return part_cache[key]['what']
139 class PlayingWidget(Frame):
140 # widget that always displays information about what's
142 def __init__(self, master=None, **kw):
143 Frame.__init__(self, master, **kw)
144 # column 0 is descriptions, column 1 is the values
145 self.columnconfigure(0,weight=0)
146 self.columnconfigure(1,weight=1)
148 self.field(0, 0, "artist", "Artist")
149 self.field(1, 0, "album", "Album")
150 self.field(2, 0, "title", "Title")
151 # column 1 also has the progress bar in it
152 self.p = ProgressBar(self, height=20)
153 self.p.grid(row=3, column=1, sticky=E+W)
154 # column 2 has operation buttons
155 b = Button(self, text="Quit", command=self.quit)
156 b.grid(row=0, column=2, sticky=E+W)
157 b = Button(self, text="Scratch", command=self.scratch)
158 b.grid(row=1, column=2, sticky=E+W)
159 b = Button(self, text="Recent", command=self.recent)
160 b.grid(row=2, column=2, sticky=E+W)
166 def field(self, row, column, name, label):
168 Label(self, text=label).grid(row=row, column=column, sticky=E)
169 self.fields[name] = Text(self, height=1, state=DISABLED)
170 self.fields[name].grid(row=row, column=column + 1, sticky=W+E);
172 def set(self, name, value):
173 # set a field's value
174 f = self.fields[name]
175 f.config(state=NORMAL)
178 f.config(state=DISABLED)
180 def playing(self, p):
181 # called with new what's-playing information
184 for tpart in ['artist', 'album', 'title']:
185 values[tpart] = part(client, p['track'], 'display', tpart)
187 self.length = client.length(p['track'])
188 except disorder.operationError:
190 self.started = int(p['played'])
193 for k in self.fields.keys():
195 self.set(k, values[k])
200 def length_bar(self):
201 if self.length and self.length > 0:
202 self.p.update(time.time() - self.started, self.length)
206 def update_length(self):
208 self.after(1000, self.update_length)
213 intercom.put(lambda: self.playing(p))
222 def recent_close(self):
223 self.recentw.destroy()
228 self.recentw.deiconify()
231 w = 80*tracklistFont.measure('A')
232 h = 40*tracklistFont.metrics("linespace")
233 self.recentw = Toplevel()
234 self.recentw.protocol("WM_DELETE_WINDOW", self.recent_close)
235 self.recentw.title("Recently Played")
236 # XXX for some reason Toplevel(width=w,height=h) doesn't seem to work
237 self.recentw.geometry("%dx%d" % (w,h))
238 w = RecentWidget(self.recentw)
239 w.pack(fill=BOTH, expand=1)
242 class TrackListWidget(Frame):
243 def __init__(self, master=None, **kw):
244 Frame.__init__(self, master, **kw)
245 self.yscrollbar = Scrollbar(self)
246 self.xscrollbar = Scrollbar(self, orient=HORIZONTAL)
247 self.canvas = Canvas(self,
248 xscrollcommand=self.xscrollbar.set,
249 yscrollcommand=self.yscrollbar.set)
250 self.xscrollbar.config(command=self.canvas.xview)
251 self.yscrollbar.config(command=self.canvas.yview)
252 self.canvas.grid(row=0, column=0, sticky=N+S+E+W)
253 self.yscrollbar.grid(row=0, column=1, sticky=N+S)
254 self.xscrollbar.grid(row=1, column=0, sticky=E+W)
255 self.columnconfigure(0,weight=1)
256 self.rowconfigure(0,weight=1)
258 self.default_cursor = self['cursor']
259 self.configure(cursor="watch")
261 def queue(self, q, w_artists, w_albums, w_titles, artists, albums, titles):
262 # called with new queue state
263 # delete old contents
265 for i in self.canvas.find_all():
266 self.canvas.delete(i)
268 # if the call was queued but not received before the window was deleted
269 # we might get an error from Tcl/Tk, which no longer knows the window,
272 w = tracklistHFont.measure("Artist")
275 w = tracklistHFont.measure("Album")
278 w = tracklistHFont.measure("Title")
281 hheading = tracklistHFont.metrics("linespace")
282 h = tracklistFont.metrics('linespace')
284 x_album = x_artist + w_artists + 16
285 x_title = x_album + w_albums + 16
286 w = x_title + w_titles + 8
287 self.canvas['scrollregion'] = (0, 0, w, h * len(artists) + hheading)
288 self.canvas.create_text(x_artist, 0, text="Artist",
291 self.canvas.create_text(x_album, 0, text="Album",
294 self.canvas.create_text(x_title, 0, text="Title",
298 for n in range(0,len(artists)):
303 self.canvas.create_text(x_artist, y, text=artist,
307 self.canvas.create_text(x_album, y, text=album,
311 self.canvas.create_text(x_title, y, text=title,
316 self.configure(cursor=self.default_cursor)
321 # we do the track name calculation in the background thread so that
322 # the gui can still be responsive
326 w_artists = w_albums = w_titles = 16
328 artist = part(c, t['track'], 'display', 'artist')
329 album = part(c, t['track'], 'display', 'album')
330 title = part(c, t['track'], 'display', 'title')
331 w = tracklistFont.measure(artist)
334 w = tracklistFont.measure(album)
337 w = tracklistFont.measure(title)
340 artists.append(artist)
343 intercom.put(lambda: self.queue(q, w_artists, w_albums, w_titles,
344 artists, albums, titles))
347 class QueueWidget(TrackListWidget):
348 def __init__(self, master=None, **kw):
349 TrackListWidget.__init__(self, master, **kw)
351 def getqueue(self, c):
354 class RecentWidget(TrackListWidget):
355 def __init__(self, master=None, **kw):
356 TrackListWidget.__init__(self, master, **kw)
358 def getqueue(self, c):
363 class MonitorStateThread:
364 # thread to pick up current server state and publish it
366 # Creates a client and monitors it in a daemon thread for state changes.
367 # Whenever one occurs, call w.poll(c) for every member w of widgets with
368 # a client owned by the thread in which the call occurs.
369 def __init__(self, widgets, masterclient=None):
370 self.logclient = disorder.client()
371 self.client = disorder.client()
372 self.clientlock = threading.Lock()
374 masterclient = disorder.client()
375 self.masterclient = masterclient
376 self.widgets = widgets
377 self.lock = threading.Lock()
379 self.thread = threading.Thread(target=self.run)
380 self.thread.setDaemon(True)
382 # spare thread for processing additions
383 self.adderq = Queue.Queue()
384 self.adder = threading.Thread(target=self.runadder)
385 self.adder.setDaemon(True)
388 def notify(self, line):
390 widgets = self.widgets
393 self.clientlock.acquire()
395 self.clientlock.release()
400 self.widgets.append(w)
402 self.adderq.put(lambda client: w.poll(client))
404 def remove(self, what):
406 self.widgets.remove(what)
411 self.logclient.log(lambda client, line: self.notify(line))
415 item = self.adderq.get()
416 self.clientlock.acquire()
418 self.clientlock.release()
420 ########################################################################
431 -h, --help Display this message
432 -V, --version Display version number
434 tkdisorder is copyright (c) 2004, 2005 Richard Kettlewell.
437 ########################################################################
440 opts, rest = getopt.getopt(sys.argv[1:], "Vh", ["version", "help"])
441 except getopt.GetoptError, e:
442 sys.stderr.write("ERROR: %s, try --help for help\n" % e.msg)
445 if o in ('-V', '--version'):
446 print "%s" % disorder.version
449 if o in ('h', '--help'):
454 client = disorder.client() # master thread's client
457 root.title("DisOrder")
459 tracklistFont = tkFont.Font(family='Helvetica', size=10)
460 tracklistHFont = tracklistFont.copy()
461 tracklistHFont.config(weight="bold")
463 p = PlayingWidget(root)
464 p.pack(fill=BOTH, expand=1)
466 q = QueueWidget(root)
467 q.pack(fill=BOTH, expand=1)
469 intercom = Intercom(root) # only need a single intercom
470 mst = MonitorStateThread([p, q], client)