The (syntax coloured) source code appears in the left
source code window. IT CANNOT BE EDITED, but ONLY VIEWED!
- - Press START button to start the demo.
- - Stop execution by pressing the STOP button.
- - Clear screen by pressing the CLEAR button.
- - Restart by pressing the START button again.
+ The demo viewer windows can be resized. The divider between text
+ and canvas can be moved by grabbing it with the mouse. The text font
+ size can be changed from the menu and with Control/Command- '-'/'+'.
+ It can also be changed on most systems with Control-mousewheel.
- SPECIAL demos are those which run EVENTDRIVEN.
- (For example clock.py - or oldTurtleDemo.py which
- in the end expects a mouse click.):
+ Press START button to start the demo.
+ Stop execution by pressing the STOP button.
+ Clear screen by pressing the CLEAR button.
+ Restart by pressing the START button again.
+
+ SPECIAL demos, such as clock.py are those which run EVENTDRIVEN.
Press START button to start the demo.
from tkinter import *
from idlelib.Percolator import Percolator
from idlelib.ColorDelegator import ColorDelegator
-from idlelib.textView import view_text # TextViewer
+from idlelib.textView import view_text
from importlib import reload
from turtledemo import __doc__ as about_turtledemo
import time
demo_dir = os.path.dirname(os.path.abspath(__file__))
+darwin = sys.platform == 'darwin'
STARTUP = 1
READY = 2
menufont = ("Arial", 12, NORMAL)
btnfont = ("Arial", 12, 'bold')
-txtfont = ('Lucida Console', 8, 'normal')
+txtfont = ['Lucida Console', 10, 'normal']
+
+MINIMUM_FONT_SIZE = 6
+MAXIMUM_FONT_SIZE = 100
+font_sizes = [8, 9, 10, 11, 12, 14, 18, 20, 22, 24, 30]
def getExampleEntries():
return [entry[:-3] for entry in os.listdir(demo_dir) if
root.title('Python turtle-graphics examples')
root.wm_protocol("WM_DELETE_WINDOW", self._destroy)
- if sys.platform == 'darwin':
+ if darwin:
import subprocess
# Make sure we are the currently activated OS X application
# so that our menu bar appears.
'-e', 'end tell',
],
stderr=subprocess.DEVNULL,
- stdout=subprocess.DEVNULL,
- )
+ stdout=subprocess.DEVNULL,)
root.grid_rowconfigure(0, weight=1)
root.grid_columnconfigure(0, weight=1)
self.mBar = Menu(root, relief=RAISED, borderwidth=2)
self.mBar.add_cascade(menu=self.makeLoadDemoMenu(self.mBar),
- label='Examples', underline=0, font=menufont)
+ label='Examples', underline=0)
+ self.mBar.add_cascade(menu=self.makeFontMenu(self.mBar),
+ label='Fontsize', underline=0)
self.mBar.add_cascade(menu=self.makeHelpMenu(self.mBar),
- label='Help', underline=0, font=menufont)
+ label='Help', underline=0)
root['menu'] = self.mBar
pane = PanedWindow(orient=HORIZONTAL, sashwidth=5,
hbar['command'] = text.xview
hbar.pack(side=BOTTOM, fill=X)
- text['font'] = txtfont
+ text['font'] = tuple(txtfont)
text['yscrollcommand'] = vbar.set
text['xscrollcommand'] = hbar.set
text.pack(side=LEFT, fill=BOTH, expand=1)
turtle._Screen._canvas = self._canvas = canvas = turtle.ScrolledCanvas(
root, 800, 600, self.canvwidth, self.canvheight)
canvas.adjustScrolls()
- canvas._rootwindow.bind('<Configure>', self.onResize)
+ self.makeBindings(canvas._rootwindow)
canvas._canvas['borderwidth'] = 0
self.screen = _s_ = turtle.Screen()
turtle.RawTurtle.screens = [_s_]
return canvas
+ def makeBindings(self, widget):
+ widget.bind('<Configure>', self.onResize)
+
+ shortcut = 'Command' if darwin else 'Control'
+ widget.bind_all('<%s-minus>' % shortcut, self.decrease_size)
+ widget.bind_all('<%s-underscore>' % shortcut, self.decrease_size)
+ widget.bind_all('<%s-equal>' % shortcut, self.increase_size)
+ widget.bind_all('<%s-plus>' % shortcut, self.increase_size)
+ widget.bind_all('<Control-MouseWheel>', self.update_mousewheel)
+ widget.bind('<Control-Button-4>', self.increase_size)
+ widget.bind('<Control-Button-5>', self.decrease_size)
+
+ def set_txtsize(self, size):
+ txtfont[1] = size
+ self.text['font'] = tuple(txtfont)
+ self.output_lbl['text'] = 'Font size %d' % size
+
+ def decrease_size(self, dummy=None):
+ self.set_txtsize(max(txtfont[1] - 1, MINIMUM_FONT_SIZE))
+
+ def increase_size(self, dummy=None):
+ self.set_txtsize(min(txtfont[1] + 1, MAXIMUM_FONT_SIZE))
+
+ def update_mousewheel(self, event):
+ # For wheel up, event.delte = 120 on Windows, -1 on darwin.
+ # X-11 sends Control-Button-4 event instead.
+ (self.decrease_size() if (event.delta < 0 and not darwin)
+ else self.increase_size())
+
def configGUI(self, start, stop, clear, txt="", color="blue"):
self.start_btn.config(state=start,
bg="#d00" if start == NORMAL else "#fca")
menu = Menu(master)
for entry in getExampleEntries():
- def loadexample(x):
- def emit():
- self.loadfile(x)
- return emit
+ def load(entry=entry):
+ self.loadfile(entry)
menu.add_command(label=entry, underline=0,
- font=menufont, command=loadexample(entry))
+ font=menufont, command=load)
+ return menu
+ def makeFontMenu(self, master):
+ menu = Menu(master)
+ menu.add_command(label="Decrease (C-'-')", command=self.decrease_size,
+ font=menufont)
+ menu.add_command(label="Increase (C-'+')", command=self.increase_size,
+ font=menufont)
+ menu.add_separator()
+
+ for size in font_sizes:
+ def resize(size=size):
+ self.set_txtsize(size)
+ menu.add_command(label=str(size), underline=0,
+ font=menufont, command=resize)
return menu
def makeHelpMenu(self, master):
def show(help_label=help_label, help_file=help_file):
view_text(self.root, help_label, help_file)
menu.add_command(label=help_label, font=menufont, command=show)
-
return menu
def refreshCanvas(self):
projects / python / commitdiff