chrono.py: ajouter le bouton pause

chrono.py

@@ -83,13 +83,24 @@ def parse_timeout(s):
     return h * 3600 + m * 60 + s
 
 class Chrono:
+    MODE_MINUTEUR = 'M'
+    MODE_CHRONOMETRE = 'C'
+    STATE_STARTED = 'started'
+    STATE_PAUSED = 'paused'
+    STATE_STOPPED = 'stopped'
+
+    ZERO = None
+
+    state = None
+    mode = None
     timeout = None
+    elapsed = None
     date_start = None
-    date_end = None
+    max_elapsed = None
     initial = None
-    started = None
 
     def __init__(self, timeout=None, start=False):
+        self.ZERO = self.__delta(0)
         self.set_timeout(timeout)
         if start: self.start()
 
@@ -113,31 +124,68 @@ class Chrono:
             timeout = tmp
         if timeout == 0: timeout = None
         self.timeout = timeout
-        if timeout is None: self.initial = '00:00'
+        self.elapsed = self.ZERO
-        else: self.initial = self.__format(self.__delta(timeout))
+        self.state = self.STATE_STOPPED
+        if timeout is None:
+            self.mode = self.MODE_CHRONOMETRE
+            self.initial = self.__format(self.ZERO)
+        else:
+            self.mode = self.MODE_MINUTEUR
+            self.max_elapsed = self.__delta(timeout)
+            self.initial = self.__format(self.max_elapsed)
+
+    def is_chronometre(self):
+        return self.mode == self.MODE_CHRONOMETRE
+
+    def is_minuteur(self):
+        return self.mode == self.MODE_MINUTEUR
+
+    def get_elapsed(self):
+        if self.date_start is None: return self.ZERO
+        delta = Datetime.today() - self.date_start
+        return self.elapsed + delta
 
     def start(self, timeout=None):
         if timeout is None: timeout = self.timeout
+        self.elapsed = self.ZERO
         self.date_start = Datetime.today()
-        if timeout is None: self.date_end = None
+        self.state = self.STATE_STARTED
-        else: self.date_end = self.date_start + self.__delta(timeout)
-        self.started = True
-
-    def stop(self):
-        self.started = False
 
     def is_started(self):
-        return self.started
+        return self.state == self.STATE_STARTED
+
+    def pause(self):
+        if self.state == self.STATE_PAUSED:
+            self.date_start = Datetime.today()
+            self.state = self.STATE_STARTED
+        else:
+            self.elapsed = self.get_elapsed()
+            self.state = self.STATE_PAUSED
+
+    def is_paused(self):
+        return self.state == self.STATE_PAUSED
+
+    def stop(self):
+        self.elapsed = self.get_elapsed()
+        self.state = self.STATE_STOPPED
+
+    def is_stopped(self):
+        return self.state == self.STATE_STOPPED
 
     def is_end(self):
-        return self.started and self.date_end is not None and Datetime.today() >= self.date_end
+        if not self.is_started(): return False
+        if not self.is_minuteur(): return False
+        elapsed = self.get_elapsed()
+        return elapsed >= self.max_elapsed
 
     def __repr__(self):
-        now = Datetime.today()
+        elapsed = self.get_elapsed() if self.is_started() else self.elapsed
-        if self.date_end is None: delta = now - self.date_start
+        if self.is_minuteur():
-        elif now > self.date_end: delta = Timedelta()
+            delta = self.max_elapsed - elapsed
-        else: delta = self.date_end - now
+            if delta < self.ZERO: delta = self.ZERO
             return self.__format(delta)
+        else:
+            return self.__format(elapsed)
 
 def run_chronometre(timeout=None, autostart=False):
     from Tkinter import Tk, Toplevel, Frame, Label, Entry, Button
@@ -217,11 +265,9 @@ def run_chronometre(timeout=None, autostart=False):
     class Application(Frame):
         root = None
         chrono = None
-        stop = None
 
         def __init__(self, timeout=None, autostart=False, **kw):
             self.chrono = Chrono(timeout)
-            self.stop = False
 
             root = Tk()
             root.title("Chronomètre")
@@ -229,6 +275,8 @@ def run_chronometre(timeout=None, autostart=False):
             root.rowconfigure(0, weight=1)
             root.bind("c", lambda event: self.do_config())
             root.bind("s", lambda event: self.do_start())
+            root.bind("p", lambda event: self.do_pause())
+            root.bind("<space>", lambda event: self.do_pause())
             root.bind("q", lambda event: self.quit())
             self.root = root
 
@@ -236,19 +284,22 @@ def run_chronometre(timeout=None, autostart=False):
             Frame.__init__(self, **kw)
 
             self.TIME = Label(self, width=10, height=2, text=self.chrono.initial, padx=30, pady=10, font=('Helvetica', 18, "normal"))
-            self.START = Button(self, text="Démarrer", command=self.do_start)
+            self.START = Button(self, text="Start", command=self.do_start)
+            self.PAUSE = Button(self, text="Pause", command=self.do_pause, state="disabled")
             self.CONFIG = Button(self, text="Config", command=self.do_config)
-            self.QUIT = Button(self, text="Quitter", command=self.quit)
+            self.QUIT = Button(self, text="Quit", command=self.quit)
 
             self.grid(column=0, row=0, sticky='nsew')
-            self.TIME.grid(column=0, row=0, columnspan=3, sticky='nsew')
+            self.TIME.grid(column=0, row=0, columnspan=4, sticky='nsew')
             self.START.grid(column=0, row=1, sticky='ew')
-            self.CONFIG.grid(column=1, row=1, sticky='ew')
+            self.PAUSE.grid(column=1, row=1, sticky='ew')
-            self.QUIT.grid(column=2, row=1, sticky='ew')
+            self.CONFIG.grid(column=2, row=1, sticky='ew')
+            self.QUIT.grid(column=3, row=1, sticky='ew')
 
             self.columnconfigure(0, weight=2)
-            self.columnconfigure(1, weight=1)
+            self.columnconfigure(1, weight=2)
-            self.columnconfigure(2, weight=2)
+            self.columnconfigure(2, weight=1)
+            self.columnconfigure(3, weight=1)
             self.rowconfigure(0, weight=1)
 
             if autostart: self.do_start()
@@ -263,15 +314,27 @@ def run_chronometre(timeout=None, autostart=False):
                     self.root.after(300, self.update_time)
 
         def do_start(self):
+            self.PAUSE.configure(state="normal")
+            self.START.configure(text="reStart")
             self.chrono.start()
             self.update_time()
 
+        def do_pause(self):
+            self.chrono.pause()
+            if self.chrono.is_paused():
+                self.PAUSE.configure(text="unPause")
+            else:
+                self.PAUSE.configure(text="Pause")
+            self.update_time()
+
         def do_config(self):
             chrono = self.chrono
             chrono.stop()
             config = Config(self.root)
             if config.have_result:
                 try:
+                    self.PAUSE.configure(text="Pause", state="disabled")
+                    self.START.configure(text="Start")
                     chrono.set_timeout(config.result)
                     self.TIME.configure(text=chrono.initial)
                 except:
@@ -320,14 +383,14 @@ if __name__ == '__main__':
     AP.set_defaults(autostart=None, timeout=None)
     AP.add_argument('timeout', metavar='TIMEOUT', nargs='?',
         help=u"""\
->>>    (valeur vide)
+>>>    '' (valeur vide)
 chronomètre qui démarre à 0:00 et ne s'arrête pas
->>>    H:M:S       (heures:minutes:secondes)
+>>>    'H:M:S'    (heures:minutes:secondes)
->>> ou M:S      (minutes:secondes)
+>>> ou 'M:S'      (minutes:secondes)
->>> ou M        (minutes)
+>>> ou 'M'        (minutes)
 minuteur qui démarre à H:M:S et fait un décompte jusqu'à 0:00. A la fin
 du décompte, une sonnerie retentit.
->>>    @H[:M[:S]]
+>>>    '@H[:M[:S]]'
 minuteur qui fonctionne comme précédemment, sauf qu'on spécifie l'heure
 d'arrivée, et que la durée est calculée automatiquement""")
     AP.add_argument('-n', '--no-autostart', dest='autostart', action='store_false',