1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
#!/usr/bin/env python3
import sys
import os
from tkinter import *
from idlelib.Percolator import Percolator
from idlelib.ColorDelegator import ColorDelegator
from idlelib.textView import view_file # TextViewer
from imp import reload
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()
#print(cwd, os.listdir(cwd))
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():
view_file(demo.root, "Help on turtleDemo", "demohelp.txt")
def showAboutDemo():
view_file(demo.root, "About turtleDemo", "about_turtledemo.txt")
def showAboutTurtle():
view_file(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()
#####
turtle.TurtleScreen.__init__(_s_, _s_._canvas)
#####
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]+" - a Python turtle graphics 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.screen._delete("all")
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("AttributeError!- WAIT A MOMENT!")
time.sleep(0.3)
print("GOING ON ..")
demo.ckearCanvas()
except TypeError:
demo.screen._delete("all")
#print("CRASH!!!- WAIT A MOMENT!")
time.sleep(0.3)
#print("GOING ON ..")
demo.clearCanvas()
except:
print("BYE!")
RUN = False
|
