Mercurial > cpython-lru_cache-weakref
annotate Demo/threads/wpi.py @ 5817:48b94de85bf3 legacy-trunk
Extensive changes by AMK.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Thu, 17 Jul 1997 16:29:42 +0000 |
| parents | a3eb25259329 |
| children |
| rev | line source |
|---|---|
| 937 | 1 # Display digits of pi in a window, calculating in a separate thread. |
| 2 # Compare ../scripts/pi.py. | |
| 3 | |
|
1635
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
4 import sys |
| 937 | 5 import time |
| 6 import thread | |
| 7 import stdwin | |
| 8 from stdwinevents import * | |
| 9 | |
|
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a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
10 ok = 1 |
|
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
11 |
| 937 | 12 digits = [] |
| 13 | |
| 14 def worker(): | |
| 15 k, a, b, a1, b1 = 2l, 4l, 1l, 12l, 4l | |
|
1635
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
16 while ok: |
| 937 | 17 # Next approximation |
| 18 p, q, k = k*k, 2l*k+1l, k+1l | |
| 19 a, b, a1, b1 = a1, b1, p*a+q*a1, p*b+q*b1 | |
| 20 # Print common digits | |
| 21 d, d1 = a/b, a1/b1 | |
| 22 #print a, b, a1, b1 | |
| 23 while d == d1: | |
| 24 digits.append(`int(d)`) | |
| 25 a, a1 = 10l*(a%b), 10l*(a1%b1) | |
| 26 d, d1 = a/b, a1/b1 | |
| 27 | |
| 28 def main(): | |
|
1635
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
29 global ok |
| 937 | 30 digits_seen = 0 |
| 31 thread.start_new_thread(worker, ()) | |
| 32 tw = stdwin.textwidth('0 ') | |
| 33 lh = stdwin.lineheight() | |
| 34 stdwin.setdefwinsize(20 * tw, 20 * lh) | |
|
1635
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
35 stdwin.setdefscrollbars(0, 1) |
| 937 | 36 win = stdwin.open('digits of pi') |
| 37 options = win.menucreate('Options') | |
| 38 options.additem('Auto scroll') | |
| 39 autoscroll = 1 | |
| 40 options.check(0, autoscroll) | |
| 41 while 1: | |
| 42 win.settimer(1) | |
| 43 type, w, detail = stdwin.getevent() | |
| 44 if type == WE_CLOSE: | |
|
1635
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
45 ok = 0 |
|
a3eb25259329
Don't use thread.exit_prog(); set a global variable to stop other
Guido van Rossum <guido@python.org>
parents:
937
diff
changeset
|
46 sys.exit(0) |
| 937 | 47 elif type == WE_DRAW: |
| 48 (left, top), (right, bottom) = detail | |
| 49 digits_seen = len(digits) | |
| 50 d = win.begindrawing() | |
| 51 for i in range(digits_seen): | |
| 52 h = (i % 20) * tw | |
| 53 v = (i / 20) * lh | |
| 54 if top-lh < v < bottom: | |
| 55 d.text((h, v), digits[i]) | |
| 56 d.close() | |
| 57 elif type == WE_TIMER: | |
| 58 n = len(digits) | |
| 59 if n > digits_seen: | |
| 60 win.settitle(`n` + ' digits of pi') | |
| 61 d = win.begindrawing() | |
| 62 for i in range(digits_seen, n): | |
| 63 h = (i % 20) * tw | |
| 64 v = (i / 20) * lh | |
| 65 d.text((h, v), digits[i]) | |
| 66 d.close() | |
| 67 digits_seen = n | |
| 68 height = (v + 20*lh) / (20*lh) * (20*lh) | |
| 69 win.setdocsize(0, height) | |
| 70 if autoscroll: | |
| 71 win.show((0, v), (h+tw, v+lh)) | |
| 72 elif type == WE_MENU: | |
| 73 menu, item = detail | |
| 74 if menu == options: | |
| 75 if item == 0: | |
| 76 autoscroll = (not autoscroll) | |
| 77 options.check(0, autoscroll) | |
| 78 | |
| 79 | |
| 80 main() |