Adds play/pause button

copycat/copycat.py

@@ -34,26 +34,33 @@ class Copycat(object):
         self.reporter = reporter or Reporter()
         self.showgui = showgui
         self.gui = GUI('Copycat')
+        self.lastUpdate = float('-inf')
 
-    def mainLoop(self, lastUpdate):
+    def step(self):
+        if (not self.showgui) or (self.showgui and not self.gui.app.primary.control.paused):
+            self.coderack.chooseAndRunCodelet()
+            self.reporter.report_coderack(self.coderack)
+            self.reporter.report_temperature(self.temperature)
+            self.reporter.report_workspace(self.workspace)
+
+    def update_workspace(self, currentTime):
+        self.workspace.updateEverything()
+        self.coderack.updateCodelets()
+        self.slipnet.update(self.random)
+        self.temperature.update(self.workspace.getUpdatedTemperature())
+        self.lastUpdate = currentTime
+        self.reporter.report_slipnet(self.slipnet)
+
+    def mainLoop(self):
         currentTime = self.coderack.codeletsRun
         self.temperature.tryUnclamp(currentTime)
         # Every 15 codelets, we update the workspace.
-        if currentTime >= lastUpdate + 15:
-            self.workspace.updateEverything()
-            self.coderack.updateCodelets()
-            self.slipnet.update(self.random)
-            self.temperature.update(self.workspace.getUpdatedTemperature())
-            lastUpdate = currentTime
-            self.reporter.report_slipnet(self.slipnet)
-        self.coderack.chooseAndRunCodelet()
-        self.reporter.report_coderack(self.coderack)
-        self.reporter.report_temperature(self.temperature)
-        self.reporter.report_workspace(self.workspace)
+        if currentTime >= self.lastUpdate + 15:
+            self.update_workspace(currentTime)
+        self.step()
 
         if self.showgui:
             self.gui.update(self)
-        return lastUpdate
 
     def runTrial(self):
         """Run a trial of the copycat algorithm"""
@@ -61,9 +68,8 @@ class Copycat(object):
         self.slipnet.reset()
         self.temperature.reset()
         self.workspace.reset()
-        lastUpdate = float('-inf')
         while self.workspace.finalAnswer is None:
-            lastUpdate = self.mainLoop(lastUpdate)
+            self.mainLoop()
         answer = {
             'answer': self.workspace.finalAnswer,
             'temp': self.temperature.last_unclamped_value,

copycat/gui/control.py

@@ -0,0 +1,22 @@
+import tkinter as tk
+import tkinter.ttk as ttk
+
+class Control(ttk.Frame):
+    def __init__(self, parent, *args, **kwargs):
+        tk.Frame.__init__(self, parent, *args, **kwargs)
+
+        self.paused = True
+
+        #self.style = ttk.Style()
+        #self.style.configure('TButton', background='black', foreground='white')
+
+        #self.playbutton = ttk.Button(self, text='Play/Pause', command=lambda : self.play())
+        self.playbutton = tk.Button(self, text='Play', command=lambda : self.toggle(), background='black', foreground='white', activebackground='black', activeforeground='blue')
+        self.playbutton.grid(column=0, row=0, stick=tk.N+tk.E+tk.S+tk.W)
+        self.rowconfigure(0, weight=1)
+        self.columnconfigure(0, weight=1)
+
+    def toggle(self):
+        self.paused = not self.paused
+        self.playbutton['text'] = 'Pause' if not self.paused else 'Play'
+    #def step(self):

copycat/gui/primary.py

@@ -4,6 +4,8 @@ import tkinter.ttk as ttk
 from tkinter import scrolledtext
 from tkinter import filedialog
 
+from .control import Control
+
 font1Size = 32
 font2Size = 16
 font1 = ('Helvetica', str(font1Size)) 
@@ -47,12 +49,17 @@ class Primary(ttk.Frame):
         ttk.Frame.__init__(self, parent, *args, **kwargs)
 
         self.canvas = create_main_canvas(self, 'abc', 'abd', 'ijk', '?')
-        self.canvas.grid(column=0, row=0, sticky=tk.N+tk.S+tk.E+tk.W)
+        self.canvas.grid(column=0, row=0, rowspan=2, sticky=tk.N+tk.S+tk.E+tk.W)
 
         self.rowconfigure(0, weight=1)
         self.columnconfigure(0, weight=1)
 
+        self.control = Control(self)
+        self.control.grid(column=0, row=2, sticky=tk.N+tk.S+tk.E+tk.W)
+        self.rowconfigure(0, weight=1)
+        self.columnconfigure(2, weight=1)
+
     def update(self, copycat):
         answer    = '' if copycat.workspace.rule is None else copycat.workspace.rule.buildTranslatedRule()
         self.canvas = create_main_canvas(self, 'abc', 'abd', 'ijk', answer)
-        self.canvas.grid(column=0, row=0, sticky=tk.N+tk.S+tk.E+tk.W)
+        self.canvas.grid(column=0, row=0, rowspan=2, sticky=tk.N+tk.S+tk.E+tk.W)

copycat/gui/status.py

@@ -17,9 +17,9 @@ plt.style.use('dark_background')
 
 class StatusFrame(tk.Frame):
     def __init__(self, parent, status, title, toolbar=False):
+        tk.Frame.__init__(self, parent)
         self.status = status
 
-        tk.Frame.__init__(self, parent)
         self.canvas = FigureCanvasTkAgg(status.figure, self)
         self.canvas.show()
         self.canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)