diff options
| -rwxr-xr-x | Lib/turtledemo/__main__.py | 93 |
1 files changed, 71 insertions, 22 deletions
diff --git a/Lib/turtledemo/__main__.py b/Lib/turtledemo/__main__.py index d65ccac..9b38e66 100755 --- a/Lib/turtledemo/__main__.py +++ b/Lib/turtledemo/__main__.py @@ -17,14 +17,17 @@ 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. @@ -87,7 +90,7 @@ import os 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 @@ -95,6 +98,7 @@ import turtle import time demo_dir = os.path.dirname(os.path.abspath(__file__)) +darwin = sys.platform == 'darwin' STARTUP = 1 READY = 2 @@ -104,7 +108,11 @@ EVENTDRIVEN = 5 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 @@ -123,7 +131,7 @@ class DemoWindow(object): 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. @@ -136,8 +144,7 @@ class DemoWindow(object): '-e', 'end tell', ], stderr=subprocess.DEVNULL, - stdout=subprocess.DEVNULL, - ) + stdout=subprocess.DEVNULL,) root.grid_rowconfigure(0, weight=1) root.grid_columnconfigure(0, weight=1) @@ -147,9 +154,11 @@ class DemoWindow(object): 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, @@ -203,7 +212,7 @@ class DemoWindow(object): 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) @@ -216,7 +225,7 @@ class DemoWindow(object): 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() @@ -225,6 +234,35 @@ class DemoWindow(object): 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") @@ -238,13 +276,25 @@ class DemoWindow(object): 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): @@ -254,7 +304,6 @@ class DemoWindow(object): 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): |