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svn+ssh://pythondev@svn.python.org/python/trunk ........ r66686 | martin.v.loewis | 2008-09-30 00:09:07 +0200 (Di, 30 Sep 2008) | 5 lines Issue #3965: Allow repeated calls to turtle.Screen, by making it a true singleton object. Reviewed by Gregor Lingl. ........
291 lines
10 KiB
Python
291 lines
10 KiB
Python
#!/usr/bin/python
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import sys
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import os
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from tkinter import *
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from idlelib.Percolator import Percolator
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from idlelib.ColorDelegator import ColorDelegator
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from idlelib.textView import view_file # TextViewer
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from imp import reload
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import turtle
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import time
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STARTUP = 1
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READY = 2
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RUNNING = 3
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DONE = 4
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EVENTDRIVEN = 5
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menufont = ("Arial", 12, NORMAL)
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btnfont = ("Arial", 12, 'bold')
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txtfont = ('Lucida Console', 8, 'normal')
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def getExampleEntries():
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cwd = os.getcwd()
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#print(cwd, os.listdir(cwd))
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if "turtleDemo.py" not in os.listdir(cwd):
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print("Directory of turtleDemo must be current working directory!")
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print("But in your case this is", cwd)
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sys.exit()
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entries1 = [entry for entry in os.listdir(cwd) if
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entry.startswith("tdemo_") and
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not entry.endswith(".pyc")]
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entries2 = []
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for entry in entries1:
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if entry.endswith(".py"):
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entries2.append(entry)
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else:
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path = os.path.join(cwd,entry)
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sys.path.append(path)
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subdir = [entry]
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scripts = [script for script in os.listdir(path) if
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script.startswith("tdemo_") and
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script.endswith(".py")]
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entries2.append(subdir+scripts)
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return entries2
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def showDemoHelp():
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view_file(demo.root, "Help on turtleDemo", "demohelp.txt")
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def showAboutDemo():
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view_file(demo.root, "About turtleDemo", "about_turtledemo.txt")
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def showAboutTurtle():
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view_file(demo.root, "About the new turtle module.", "about_turtle.txt")
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class DemoWindow(object):
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def __init__(self, filename=None): #, root=None):
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self.root = root = turtle._root = Tk()
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root.wm_protocol("WM_DELETE_WINDOW", self._destroy)
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#################
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self.mBar = Frame(root, relief=RAISED, borderwidth=2)
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self.mBar.pack(fill=X)
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self.ExamplesBtn = self.makeLoadDemoMenu()
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self.OptionsBtn = self.makeHelpMenu()
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self.mBar.tk_menuBar(self.ExamplesBtn, self.OptionsBtn) #, QuitBtn)
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root.title('Python turtle-graphics examples')
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#################
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self.left_frame = left_frame = Frame(root)
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self.text_frame = text_frame = Frame(left_frame)
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self.vbar = vbar =Scrollbar(text_frame, name='vbar')
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self.text = text = Text(text_frame,
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name='text', padx=5, wrap='none',
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width=45)
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vbar['command'] = text.yview
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vbar.pack(side=LEFT, fill=Y)
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#####################
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self.hbar = hbar =Scrollbar(text_frame, name='hbar', orient=HORIZONTAL)
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hbar['command'] = text.xview
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hbar.pack(side=BOTTOM, fill=X)
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#####################
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text['yscrollcommand'] = vbar.set
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text.config(font=txtfont)
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text.config(xscrollcommand=hbar.set)
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text.pack(side=LEFT, fill=Y, expand=1)
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#####################
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self.output_lbl = Label(left_frame, height= 1,text=" --- ", bg = "#ddf",
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font = ("Arial", 16, 'normal'))
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self.output_lbl.pack(side=BOTTOM, expand=0, fill=X)
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#####################
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text_frame.pack(side=LEFT, fill=BOTH, expand=0)
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left_frame.pack(side=LEFT, fill=BOTH, expand=0)
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self.graph_frame = g_frame = Frame(root)
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turtle._Screen._root = g_frame
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turtle._Screen._canvas = turtle.ScrolledCanvas(g_frame, 800, 600, 1000, 800)
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#xturtle.Screen._canvas.pack(expand=1, fill="both")
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self.screen = _s_ = turtle.Screen()
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#####
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turtle.TurtleScreen.__init__(_s_, _s_._canvas)
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#####
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self.scanvas = _s_._canvas
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#xturtle.RawTurtle.canvases = [self.scanvas]
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turtle.RawTurtle.screens = [_s_]
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self.scanvas.pack(side=TOP, fill=BOTH, expand=1)
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self.btn_frame = btn_frame = Frame(g_frame, height=100)
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self.start_btn = Button(btn_frame, text=" START ", font=btnfont, fg = "white",
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disabledforeground = "#fed", command=self.startDemo)
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self.start_btn.pack(side=LEFT, fill=X, expand=1)
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self.stop_btn = Button(btn_frame, text=" STOP ", font=btnfont, fg = "white",
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disabledforeground = "#fed", command = self.stopIt)
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self.stop_btn.pack(side=LEFT, fill=X, expand=1)
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self.clear_btn = Button(btn_frame, text=" CLEAR ", font=btnfont, fg = "white",
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disabledforeground = "#fed", command = self.clearCanvas)
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self.clear_btn.pack(side=LEFT, fill=X, expand=1)
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self.btn_frame.pack(side=TOP, fill=BOTH, expand=0)
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self.graph_frame.pack(side=TOP, fill=BOTH, expand=1)
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Percolator(text).insertfilter(ColorDelegator())
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self.dirty = False
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self.exitflag = False
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if filename:
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self.loadfile(filename)
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self.configGUI(NORMAL, DISABLED, DISABLED, DISABLED,
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"Choose example from menu", "black")
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self.state = STARTUP
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def _destroy(self):
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self.root.destroy()
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sys.exit()
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def configGUI(self, menu, start, stop, clear, txt="", color="blue"):
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self.ExamplesBtn.config(state=menu)
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self.start_btn.config(state=start)
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if start==NORMAL:
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self.start_btn.config(bg="#d00")
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else:
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self.start_btn.config(bg="#fca")
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self.stop_btn.config(state=stop)
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if stop==NORMAL:
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self.stop_btn.config(bg="#d00")
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else:
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self.stop_btn.config(bg="#fca")
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self.clear_btn.config(state=clear)
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self.clear_btn.config(state=clear)
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if clear==NORMAL:
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self.clear_btn.config(bg="#d00")
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else:
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self.clear_btn.config(bg="#fca")
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self.output_lbl.config(text=txt, fg=color)
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def makeLoadDemoMenu(self):
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CmdBtn = Menubutton(self.mBar, text='Examples', underline=0, font=menufont)
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CmdBtn.pack(side=LEFT, padx="2m")
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CmdBtn.menu = Menu(CmdBtn)
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for entry in getExampleEntries():
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def loadexample(x):
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def emit():
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self.loadfile(x)
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return emit
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if isinstance(entry,str):
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CmdBtn.menu.add_command(label=entry[6:-3], underline=0, font=menufont,
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command=loadexample(entry))
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else:
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_dir, entries = entry[0], entry[1:]
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CmdBtn.menu.choices = Menu(CmdBtn.menu)
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for e in entries:
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CmdBtn.menu.choices.add_command(label=e[6:-3], underline=0, font=menufont,
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command = loadexample(os.path.join(_dir,e)))
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CmdBtn.menu.add_cascade(label=_dir[6:],
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menu = CmdBtn.menu.choices, font=menufont )
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CmdBtn['menu'] = CmdBtn.menu
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return CmdBtn
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def makeHelpMenu(self):
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CmdBtn = Menubutton(self.mBar, text='Help', underline=0, font = menufont)
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CmdBtn.pack(side=LEFT, padx='2m')
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CmdBtn.menu = Menu(CmdBtn)
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CmdBtn.menu.add_command(label='About turtle.py', font=menufont, command=showAboutTurtle)
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CmdBtn.menu.add_command(label='turtleDemo - Help', font=menufont, command=showDemoHelp)
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CmdBtn.menu.add_command(label='About turtleDemo', font=menufont, command=showAboutDemo)
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CmdBtn['menu'] = CmdBtn.menu
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return CmdBtn
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def refreshCanvas(self):
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if not self.dirty: return
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self.screen.clear()
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#self.screen.mode("standard")
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self.dirty=False
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def loadfile(self,filename):
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self.refreshCanvas()
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if os.path.exists(filename) and not os.path.isdir(filename):
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# load and display file text
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f = open(filename,'r')
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chars = f.read()
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f.close()
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self.text.delete("1.0", "end")
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self.text.insert("1.0",chars)
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direc, fname = os.path.split(filename)
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self.root.title(fname[6:-3]+" - a Python turtle graphics example")
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self.module = __import__(fname[:-3])
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reload(self.module)
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self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED,
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"Press start button", "red")
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self.state = READY
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def startDemo(self):
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self.refreshCanvas()
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self.dirty = True
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turtle.TurtleScreen._RUNNING = True
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self.configGUI(DISABLED, DISABLED, NORMAL, DISABLED,
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"demo running...", "black")
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self.screen.clear()
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self.screen.mode("standard")
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self.state = RUNNING
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try:
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result = self.module.main()
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if result == "EVENTLOOP":
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self.state = EVENTDRIVEN
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else:
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self.state = DONE
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except turtle.Terminator:
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self.state = DONE
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result = "stopped!"
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if self.state == DONE:
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self.configGUI(NORMAL, NORMAL, DISABLED, NORMAL,
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result)
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elif self.state == EVENTDRIVEN:
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self.exitflag = True
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self.configGUI(DISABLED, DISABLED, NORMAL, DISABLED,
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"use mouse/keys or STOP", "red")
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def clearCanvas(self):
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self.refreshCanvas()
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self.screen._delete("all")
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self.scanvas.config(cursor="")
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self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED)
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def stopIt(self):
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if self.exitflag:
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self.clearCanvas()
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self.exitflag = False
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self.configGUI(NORMAL, NORMAL, DISABLED, DISABLED,
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"STOPPED!", "red")
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turtle.TurtleScreen._RUNNING = False
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#print "stopIT: exitflag = True"
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else:
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turtle.TurtleScreen._RUNNING = False
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#print "stopIt: exitflag = False"
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if __name__ == '__main__':
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demo = DemoWindow()
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RUN = True
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while RUN:
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try:
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#print("ENTERING mainloop")
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demo.root.mainloop()
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except AttributeError:
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#print("AttributeError!- WAIT A MOMENT!")
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time.sleep(0.3)
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print("GOING ON ..")
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demo.ckearCanvas()
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except TypeError:
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demo.screen._delete("all")
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#print("CRASH!!!- WAIT A MOMENT!")
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time.sleep(0.3)
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#print("GOING ON ..")
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demo.clearCanvas()
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except:
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print("BYE!")
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RUN = False
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