Issue #21933: Users can now change the font size for example code.
Original patch by Lita Cho.
This commit is contained in:
Terry Jan Reedy
parent
282124b8c4
commit
c6a1c02cce
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@ -17,14 +17,17 @@
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The (syntax coloured) source code appears in the left
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source code window. IT CANNOT BE EDITED, but ONLY VIEWED!
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- Press START button to start the demo.
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- Stop execution by pressing the STOP button.
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- Clear screen by pressing the CLEAR button.
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- Restart by pressing the START button again.
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The demo viewer windows can be resized. The divider between text
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and canvas can be moved by grabbing it with the mouse. The text font
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size can be changed from the menu and with Control/Command- '-'/'+'.
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It can also be changed on most systems with Control-mousewheel.
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SPECIAL demos are those which run EVENTDRIVEN.
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(For example clock.py - or oldTurtleDemo.py which
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in the end expects a mouse click.):
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Press START button to start the demo.
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Stop execution by pressing the STOP button.
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Clear screen by pressing the CLEAR button.
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Restart by pressing the START button again.
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SPECIAL demos, such as clock.py are those which run EVENTDRIVEN.
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Press START button to start the demo.
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@ -87,7 +90,7 @@ 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_text # TextViewer
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from idlelib.textView import view_text
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from importlib import reload
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from turtledemo import __doc__ as about_turtledemo
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@ -95,6 +98,7 @@ import turtle
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import time
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demo_dir = os.path.dirname(os.path.abspath(__file__))
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darwin = sys.platform == 'darwin'
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STARTUP = 1
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READY = 2
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@ -104,7 +108,11 @@ 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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txtfont = ['Lucida Console', 10, 'normal']
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MINIMUM_FONT_SIZE = 6
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MAXIMUM_FONT_SIZE = 100
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font_sizes = [8, 9, 10, 11, 12, 14, 18, 20, 22, 24, 30]
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def getExampleEntries():
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return [entry[:-3] for entry in os.listdir(demo_dir) if
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@ -123,7 +131,7 @@ class DemoWindow(object):
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root.title('Python turtle-graphics examples')
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root.wm_protocol("WM_DELETE_WINDOW", self._destroy)
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if sys.platform == 'darwin':
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if darwin:
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import subprocess
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# Make sure we are the currently activated OS X application
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# so that our menu bar appears.
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@ -136,8 +144,7 @@ class DemoWindow(object):
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'-e', 'end tell',
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],
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stderr=subprocess.DEVNULL,
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stdout=subprocess.DEVNULL,
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)
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stdout=subprocess.DEVNULL,)
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root.grid_rowconfigure(0, weight=1)
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root.grid_columnconfigure(0, weight=1)
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@ -147,9 +154,11 @@ class DemoWindow(object):
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self.mBar = Menu(root, relief=RAISED, borderwidth=2)
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self.mBar.add_cascade(menu=self.makeLoadDemoMenu(self.mBar),
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label='Examples', underline=0, font=menufont)
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label='Examples', underline=0)
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self.mBar.add_cascade(menu=self.makeFontMenu(self.mBar),
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label='Fontsize', underline=0)
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self.mBar.add_cascade(menu=self.makeHelpMenu(self.mBar),
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label='Help', underline=0, font=menufont)
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label='Help', underline=0)
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root['menu'] = self.mBar
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pane = PanedWindow(orient=HORIZONTAL, sashwidth=5,
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@ -203,7 +212,7 @@ class DemoWindow(object):
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hbar['command'] = text.xview
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hbar.pack(side=BOTTOM, fill=X)
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text['font'] = txtfont
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text['font'] = tuple(txtfont)
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text['yscrollcommand'] = vbar.set
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text['xscrollcommand'] = hbar.set
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text.pack(side=LEFT, fill=BOTH, expand=1)
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@ -216,7 +225,7 @@ class DemoWindow(object):
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turtle._Screen._canvas = self._canvas = canvas = turtle.ScrolledCanvas(
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root, 800, 600, self.canvwidth, self.canvheight)
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canvas.adjustScrolls()
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canvas._rootwindow.bind('<Configure>', self.onResize)
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self.makeBindings(canvas._rootwindow)
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canvas._canvas['borderwidth'] = 0
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self.screen = _s_ = turtle.Screen()
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@ -225,6 +234,35 @@ class DemoWindow(object):
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turtle.RawTurtle.screens = [_s_]
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return canvas
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def makeBindings(self, widget):
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widget.bind('<Configure>', self.onResize)
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shortcut = 'Command' if darwin else 'Control'
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widget.bind_all('<%s-minus>' % shortcut, self.decrease_size)
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widget.bind_all('<%s-underscore>' % shortcut, self.decrease_size)
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widget.bind_all('<%s-equal>' % shortcut, self.increase_size)
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widget.bind_all('<%s-plus>' % shortcut, self.increase_size)
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widget.bind_all('<Control-MouseWheel>', self.update_mousewheel)
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widget.bind('<Control-Button-4>', self.increase_size)
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widget.bind('<Control-Button-5>', self.decrease_size)
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def set_txtsize(self, size):
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txtfont[1] = size
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self.text['font'] = tuple(txtfont)
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self.output_lbl['text'] = 'Font size %d' % size
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def decrease_size(self, dummy=None):
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self.set_txtsize(max(txtfont[1] - 1, MINIMUM_FONT_SIZE))
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def increase_size(self, dummy=None):
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self.set_txtsize(min(txtfont[1] + 1, MAXIMUM_FONT_SIZE))
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def update_mousewheel(self, event):
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# For wheel up, event.delte = 120 on Windows, -1 on darwin.
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# X-11 sends Control-Button-4 event instead.
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(self.decrease_size() if (event.delta < 0 and not darwin)
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else self.increase_size())
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def configGUI(self, start, stop, clear, txt="", color="blue"):
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self.start_btn.config(state=start,
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bg="#d00" if start == NORMAL else "#fca")
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@ -238,13 +276,25 @@ class DemoWindow(object):
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menu = Menu(master)
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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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def load(entry=entry):
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self.loadfile(entry)
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menu.add_command(label=entry, underline=0,
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font=menufont, command=loadexample(entry))
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font=menufont, command=load)
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return menu
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def makeFontMenu(self, master):
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menu = Menu(master)
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menu.add_command(label="Decrease (C-'-')", command=self.decrease_size,
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font=menufont)
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menu.add_command(label="Increase (C-'+')", command=self.increase_size,
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font=menufont)
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menu.add_separator()
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for size in font_sizes:
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def resize(size=size):
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self.set_txtsize(size)
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menu.add_command(label=str(size), underline=0,
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font=menufont, command=resize)
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return menu
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def makeHelpMenu(self, master):
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@ -254,7 +304,6 @@ class DemoWindow(object):
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def show(help_label=help_label, help_file=help_file):
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view_text(self.root, help_label, help_file)
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menu.add_command(label=help_label, font=menufont, command=show)
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return menu
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def refreshCanvas(self):
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