Patch #1513695: New turtle module, with demos.

1 files changed, 279 insertions, 0 deletions

diff --git a/Demo/turtle/turtleDemo.py b/Demo/turtle/turtleDemo.py
new file mode 100644
index 0000000..245eaa7
--- /dev/null
+++ b/Demo/turtle/turtleDemo.py
@@ -0,0 +1,279 @@
+#!/usr/bin/python
+import sys
+import os
+
+from Tkinter import *
+from idlelib.Percolator import Percolator
+from idlelib.ColorDelegator import ColorDelegator
+from idlelib.textView import TextViewer
+
+import turtle
+import time
+
+STARTUP = 1
+READY = 2
+RUNNING = 3
+DONE = 4
+EVENTDRIVEN = 5
+
+menufont = ("Arial", 12, NORMAL)
+btnfont = ("Arial", 12, 'bold')
+txtfont = ('Lucida Console', 8, 'normal')
+
+def getExampleEntries():
+    cwd = os.getcwd()
+    if "turtleDemo.py" not in os.listdir(cwd):
+        print "Directory of turtleDemo must be current working directory!"
+        print "But in your case this is", cwd
+        sys.exit()
+    entries1 = [entry for entry in os.listdir(cwd) if
+                     entry.startswith("tdemo_") and
+                     not entry.endswith(".pyc")]
+    entries2 = []
+    for entry in entries1:
+        if entry.endswith(".py"):
+            entries2.append(entry)
+        else:
+            path = os.path.join(cwd,entry)
+            sys.path.append(path)
+            subdir = [entry]
+            scripts = [script for script in os.listdir(path) if
+                            script.startswith("tdemo_") and
+                            script.endswith(".py")]
+            entries2.append(subdir+scripts)
+    return entries2
+
+def showDemoHelp():
+    TextViewer(demo.root, "Help on turtleDemo", "demohelp.txt")
+
+def showAboutDemo():
+    TextViewer(demo.root, "About turtleDemo", "about_turtledemo.txt")
+
+def showAboutTurtle():
+    TextViewer(demo.root, "About the new turtle module", "about_turtle.txt")
+
+class DemoWindow(object):
+
+    def __init__(self, filename=None):   #, root=None):
+        self.root = root = turtle._root = Tk()
+        root.wm_protocol("WM_DELETE_WINDOW", self._destroy)
+
+        #################
+        self.mBar = Frame(root, relief=RAISED, borderwidth=2)
+        self.mBar.pack(fill=X)
+
+        self.ExamplesBtn = self.makeLoadDemoMenu()
+        self.OptionsBtn = self.makeHelpMenu()
+        self.mBar.tk_menuBar(self.ExamplesBtn, self.OptionsBtn) #, QuitBtn)
+
+        root.title('Python turtle-graphics examples')
+        #################
+        self.left_frame = left_frame = Frame(root)
+        self.text_frame = text_frame = Frame(left_frame)
+        self.vbar = vbar =Scrollbar(text_frame, name='vbar')
+        self.text = text = Text(text_frame,
+                                name='text', padx=5, wrap='none',
+                                width=45)
+        vbar['command'] = text.yview
+        vbar.pack(side=LEFT, fill=Y)
+        #####################
+        self.hbar = hbar =Scrollbar(text_frame, name='hbar', orient=HORIZONTAL)
+        hbar['command'] = text.xview
+        hbar.pack(side=BOTTOM, fill=X)
+        #####################
+        text['yscrollcommand'] = vbar.set
+        text.config(font=txtfont)
+        text.config(xscrollcommand=hbar.set)
+        text.pack(side=LEFT, fill=Y, expand=1)
+        #####################
+        self.output_lbl = Label(left_frame, height= 1,text=" --- ", bg = "#ddf",
+                                font = ("Arial", 16, 'normal'))
+        self.output_lbl.pack(side=BOTTOM, expand=0, fill=X)
+        #####################
+        text_frame.pack(side=LEFT, fill=BOTH, expand=0)
+        left_frame.pack(side=LEFT, fill=BOTH, expand=0)
+        self.graph_frame = g_frame = Frame(root)
+
+        turtle.Screen._root = g_frame
+        turtle.Screen._canvas = turtle.ScrolledCanvas(g_frame, 800, 600, 1000, 800)
+        #xturtle.Screen._canvas.pack(expand=1, fill="both")
+        self.screen = _s_ = turtle.Screen()
+        self.scanvas = _s_._canvas
+        #xturtle.RawTurtle.canvases = [self.scanvas]
+        turtle.RawTurtle.screens = [_s_]
+
+        self.scanvas.pack(side=TOP, fill=BOTH, expand=1)
+
+        self.btn_frame = btn_frame = Frame(g_frame, height=100)
+        self.start_btn = Button(btn_frame, text=" START ", font=btnfont, fg = "white",
+                                disabledforeground = "#fed", command=self.startDemo)
+        self.start_btn.pack(side=LEFT, fill=X, expand=1)
+        self.stop_btn = Button(btn_frame, text=" STOP ",  font=btnfont, fg = "white",
+                                disabledforeground = "#fed", command = self.stopIt)
+        self.stop_btn.pack(side=LEFT, fill=X, expand=1)
+        self.clear_btn = Button(btn_frame, text=" CLEAR ",  font=btnfont, fg = "white",
+                                disabledforeground = "#fed", command = self.clearCanvas)
+        self.clear_btn.pack(side=LEFT, fill=X, expand=1)
+
+        self.btn_frame.pack(side=TOP, fill=BOTH, expand=0)
+        self.graph_frame.pack(side=TOP, fill=BOTH, expand=1)
+
+        Percolator(text).insertfilter(ColorDelegator())
+        self.dirty = False
+        self.exitflag = False
+        if filename:
+            self.loadfile(filename)
+        self.configGUI(NORMAL, DISABLED, DISABLED, DISABLED,
+                       "Choose example from menu", "black")
+        self.state = STARTUP
+
+    def _destroy(self):
+        self.root.destroy()
+        sys.exit()
+
+    def configGUI(self, menu, start, stop, clear, txt="", color="blue"):
+        self.ExamplesBtn.config(state=menu)
+
+        self.start_btn.config(state=start)
+        if start==NORMAL:
+            self.start_btn.config(bg="#d00")
+        else:
+            self.start_btn.config(bg="#fca")
+
+        self.stop_btn.config(state=stop)
+        if stop==NORMAL:
+            self.stop_btn.config(bg="#d00")
+        else:
+            self.stop_btn.config(bg="#fca")
+        self.clear_btn.config(state=clear)
+
+        self.clear_btn.config(state=clear)
+        if clear==NORMAL:
+            self.clear_btn.config(bg="#d00")
+        else:
+            self.clear_btn.config(bg="#fca")
+
+        self.output_lbl.config(text=txt, fg=color)
+
+
+    def makeLoadDemoMenu(self):
+        CmdBtn = Menubutton(self.mBar, text='Examples', underline=0, font=menufont)
+        CmdBtn.pack(side=LEFT, padx="2m")
+        CmdBtn.menu = Menu(CmdBtn)
+
+        for entry in getExampleEntries():
+            def loadexample(x):
+                def emit():
+                    self.loadfile(x)
+                return emit
+            if isinstance(entry,str):
+                CmdBtn.menu.add_command(label=entry[6:-3], underline=0, font=menufont,
+                                        command=loadexample(entry))
+            else:
+                _dir, entries = entry[0], entry[1:]
+                CmdBtn.menu.choices = Menu(CmdBtn.menu)
+                for e in entries:
+                    CmdBtn.menu.choices.add_command(label=e[6:-3], underline=0, font=menufont,
+                              command = loadexample(os.path.join(_dir,e)))
+
+                CmdBtn.menu.add_cascade(label=_dir[6:],
+                                        menu = CmdBtn.menu.choices, font=menufont )
+
+        CmdBtn['menu'] = CmdBtn.menu
+        return CmdBtn
+
+
+    def makeHelpMenu(self):
+        CmdBtn = Menubutton(self.mBar, text='Help', underline=0, font = menufont)
+        CmdBtn.pack(side=LEFT, padx='2m')
+        CmdBtn.menu = Menu(CmdBtn)
+
+        CmdBtn.menu.add_command(label='About turtle.py', font=menufont, command=showAboutTurtle)
+        CmdBtn.menu.add_command(label='turtleDemo - Help', font=menufont, command=showDemoHelp)
+        CmdBtn.menu.add_command(label='About turtleDemo', font=menufont, command=showAboutDemo)
+
+        CmdBtn['menu'] = CmdBtn.menu
+        return CmdBtn
+
+    def refreshCanvas(self):
+        if not self.dirty: return
+        self.screen.clear()
+        #self.screen.mode("standard")
+        self.dirty=False
+
+    def loadfile(self,filename):
+        self.refreshCanvas()
+        if os.path.exists(filename) and not os.path.isdir(filename):
+            # load and display file text
+            f = open(filename,'r')
+            chars = f.read()
+            f.close()
+            self.text.delete("1.0", "end")
+            self.text.insert("1.0",chars)
+            direc, fname = os.path.split(filename)
+            self.root.title(fname[6:-3]+" - an xturtle example")
+            self.module = __import__(fname[:-3])
+            reload(self.module)
+            self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED,
+                           "Press start button", "red")
+            self.state = READY
+
+    def startDemo(self):
+        self.refreshCanvas()
+        self.dirty = True
+        turtle.TurtleScreen._RUNNING = True
+        self.configGUI(DISABLED, DISABLED, NORMAL, DISABLED,
+                       "demo running...", "black")
+        self.screen.clear()
+        self.screen.mode("standard")
+        self.state = RUNNING
+
+        try:
+            result = self.module.main()
+            if result == "EVENTLOOP":
+                self.state = EVENTDRIVEN
+            else:
+                self.state = DONE
+        except turtle.Terminator:
+            self.state = DONE
+            result = "stopped!"
+        if self.state == DONE:
+            self.configGUI(NORMAL, NORMAL, DISABLED, NORMAL,
+                           result)
+        elif self.state == EVENTDRIVEN:
+            self.exitflag = True
+            self.configGUI(DISABLED, DISABLED, NORMAL, DISABLED,
+                           "use mouse/keys or STOP", "red")
+
+    def clearCanvas(self):
+        self.refreshCanvas()
+        self.scanvas.config(cursor="")
+        self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED)
+
+    def stopIt(self):
+        if self.exitflag:
+            self.clearCanvas()
+            self.exitflag = False
+            self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED,
+                           "STOPPED!", "red")
+            turtle.TurtleScreen._RUNNING = False
+            #print "stopIT: exitflag = True"
+        else:
+            turtle.TurtleScreen._RUNNING = False
+            #print "stopIt: exitflag = False"
+
+if __name__ == '__main__':
+    demo = DemoWindow()
+    RUN = True
+    while RUN:
+        try:
+            print "ENTERING mainloop"
+            demo.root.mainloop()
+        except AttributeError:
+            print "CRASH!!!- WAIT A MOMENT!"
+            time.sleep(0.3)
+            print "GOING ON .."
+            demo.refreshCanvas()
+##            time.sleep(1)
+        except:
+            RUN = FALSE