class Tkui(base.BaseUI):
"""
This is a ui class which handles the complete Tk user interface.
"""
def __init__(self):
""" Initializes."""
base.BaseUI.__init__(self)
# internal ui queue
self._event_queue = queue.Queue()
# map of session -> (bold, foreground, background)
self._currcolors = {}
# ses -> string
self._unfinishedcolor = {}
self._viewhistory = 0
self._do_i_echo = 1
# holds a map of window names -> window references
self._windows = {}
# instantiate all the widgets
self._tk = Tk()
self._tk.geometry("800x600")
self.settitle()
fnt = tkinter.font.Font(family="FixedSys", size=10)
self._entry = CommandEntry(self._tk,
self,
fg='white',
bg='black',
insertbackground='yellow',
font=fnt,
insertwidth='2')
self._entry.pack(side='bottom', fill='both')
self._topframe = Frame(self._tk)
self._topframe.pack(side='top', fill='both', expand=1)
self._txt = ScrolledText(self._topframe,
fg='white',
bg='black',
font=fnt,
height=20)
self._txt.pack(side='bottom', fill='both', expand=1)
self._txt.bind("<KeyPress>", self._ignoreThis)
self._txtbuffer = ScrolledText(self._topframe,
fg='white',
bg='black',
font=fnt,
height=20)
self._txtbuffer.bind("<KeyPress-Escape>", self.escape)
self._txtbuffer.bind("<KeyPress>", self._ignoreThis)
self._entry.focus_set()
self._initColorTags()
self.dequeue()
exported.hook_register("config_change_hook", self.configChangeHandler)
exported.hook_register("to_user_hook", self.write)
# FIXME - fix this explanation. this is just terrible.
tc = config.BoolConfig(
"saveinputhighlight", 0, 1,
"Allows you to change the behavior of the command entry. When "
"saveinputhighlight is off, we discard whatever is on the entry "
"line. When it is on, we will retain the contents allowing you "
"to press the enter key to do whatever you typed again.")
exported.add_config("saveinputhighlight", tc)
self._quit = 0
def runui(self):
global HELP_TEXT
exported.add_help("tkui", HELP_TEXT)
exported.write_message("For tk help type \"#help tkui\".")
exported.add_command("colorcheck", colorcheck_cmd)
# run the tk mainloop here
self._tk.mainloop()
def wantMainThread(self):
# The tkui needs the main thread of execution so we return
# a 1 here.
return 1
def quit(self):
if not self._quit:
self._quit = 1
self._topframe.quit()
def dequeue(self):
qsize = self._event_queue.qsize()
if qsize > 10:
qsize = 10
for i in range(qsize):
ev = self._event_queue.get_nowait()
ev.execute(self)
self._tk.after(25, self.dequeue)
def settitle(self, title=""):
"""
Sets the title bar to the Lyntin title plus the given string.
@param title: the title to set
@type title: string
"""
if title:
title = constants.LYNTINTITLE + title
else:
title = constants.LYNTINTITLE
self._event_queue.put(_TitleEvent(self._tk, title))
def removeWindow(self, windowname):
"""
This removes a NamedWindow from our list of NamedWindows.
@param windowname: the name of the window to write to
@type windowname: string
"""
if windowname in self._windows:
del self._windows[windowname]
def writeWindow(self, windowname, message):
"""
This writes to the window named "windowname". If the window
does not exist, we spin one off. It handles ansi text and
messages just like writing to the main window.
@param windowname: the name of the window to write to
@type windowname: string
@param message: the message to write to the window
@type message: string or Message instance
"""
self._event_queue.put(_WriteWindowEvent(windowname, message))
def writeWindow_internal(self, windowname, message):
if windowname not in self._windows:
self._windows[windowname] = NamedWindow(windowname, self, self._tk)
self._windows[windowname].write(message)
def _ignoreThis(self, tkevent):
""" This catches keypresses from the history buffer."""
# kludge so that ctrl-c doesn't get caught allowing windows
# users to copy the buffer....
if tkevent.keycode == 17 or tkevent.keycode == 67:
return
self._entry.focus()
if tkevent.char:
# we do this little song and dance so as to pass events
# we don't want to deal with to the entry widget essentially
# by creating a new event and tossing it in the event list.
# it only sort of works--but it's the best code we've got
# so far.
args = ('event', 'generate', self._entry, "<KeyPress>")
args = args + ('-rootx', tkevent.x_root)
args = args + ('-rooty', tkevent.y_root)
args = args + ('-keycode', tkevent.keycode)
args = args + ('-keysym', tkevent.keysym)
self._tk.tk.call(args)
return "break"
def pageUp(self):
""" Handles prior (Page-Up) events."""
if self._viewhistory == 0:
self._txtbuffer.pack(side='top', fill='both', expand=1)
self._viewhistory = 1
self._txtbuffer.delete("1.0", "end")
lotofstuff = self._txt.get('1.0', 'end')
self._txtbuffer.insert('end', lotofstuff)
for t in self._txt.tag_names():
taux = None
tst = 0
for e in self._txt.tag_ranges(t):
if tst == 0:
taux = e
tst = 1
else:
tst = 0
self._txtbuffer.tag_add(t, str(taux), str(e))
self._txtbuffer.yview('moveto', '1')
if os.name != 'posix':
self._txtbuffer.yview('scroll', '20', 'units')
self._tk.update_idletasks()
self._txt.yview('moveto', '1.0')
if os.name != 'posix':
self._txt.yview('scroll', '220', 'units')
else:
# yscroll up stuff
self._txtbuffer.yview('scroll', '-15', 'units')
def pageDown(self):
""" Handles next (Page-Down) events."""
if self._viewhistory == 1:
# yscroll down stuff
self._txtbuffer.yview('scroll', '15', 'units')
def escape(self, tkevent):
""" Handles escape (Escape) events."""
if self._viewhistory == 1:
self._txtbuffer.forget()
self._viewhistory = 0
else:
self._entry.clearInput()
def configChangeHandler(self, args):
""" This handles config changes including mudecho. """
name = args["name"]
newvalue = args["newvalue"]
if name == "mudecho":
if newvalue == 1:
# echo on
self._do_i_echo = 1
self._entry.configure(show='')
else:
# echo off
self._do_i_echo = 0
self._entry.configure(show='*')
def _yadjust(self):
"""Handles y scrolling after text insertion."""
self._txt.yview('moveto', '1')
# if os.name != 'posix':
self._txt.yview('scroll', '20', 'units')
def _clipText(self):
"""
Scrolls the text buffer up so that the new text written at
the bottom of the text buffer can be seen.
"""
temp = self._txt.index("end")
ind = temp.find(".")
temp = temp[:ind]
if (temp.isdigit() and int(temp) > 800):
self._txt.delete("1.0", "100.end")
def write(self, args):
"""
This writes text to the text buffer for viewing by the user.
This is overridden from the 'base.BaseUI'.
"""
self._event_queue.put(_OutputEvent(args))
def write_internal(self, args):
mess = args["message"]
if type(mess) == bytes:
mess = message.Message(mess, message.LTDATA)
elif "window" in mess.hints:
self.writeWindow_internal(mess.hints["window"], mess)
return
line = mess.data
ses = mess.session
if line == '' or self.showTextForSession(ses) == 0:
return
color, leftover = buffer_write(mess, self._txt, self._currcolors,
self._unfinishedcolor)
if mess.type == message.MUDDATA:
self._unfinishedcolor[ses] = leftover
self._currcolors[ses] = color
self._clipText()
self._yadjust()
def convertColor(self, name):
"""
Tk has this really weird color palatte. So I switched to using
color names in most cases and rgb values in cases where I couldn't
find a good color name.
This method allows me to specify either an rgb or a color name
and it converts the color names to rgb.
@param name: either an rgb value or a name
@type name: string
@returns: the rgb color value
@rtype: string
"""
if name.startswith("#"):
return name
rgb = self._tk._getints(
self._tk.tk.call('winfo', 'rgb', self._txt, name))
rgb = "#%02x%02x%02x" % (old_div(rgb[0], 256), old_div(
rgb[1], 256), old_div(rgb[2], 256))
print(name, "converted to: ", rgb)
return rgb
def _initColorTags(self):
""" Sets up Tk tags for the text widget (fg/bg/u)."""
for ck in list(fg_color_codes.keys()):
color = self.convertColor(fg_color_codes[ck])
self._txt.tag_config(ck, foreground=color)
self._txtbuffer.tag_config(ck, foreground=color)
for ck in list(bg_color_codes.keys()):
self._txt.tag_config(ck, background=bg_color_codes[ck])
self._txtbuffer.tag_config(ck, background=bg_color_codes[ck])
self._txt.tag_config("u", underline=1)
self._txtbuffer.tag_config("u", underline=1)
def colorCheck(self):
"""
Goes through and displays all the combinations of fg and bg
with the text string involved. Purely for debugging
purposes.
"""
fgkeys = ['30', '31', '32', '33', '34', '35', '36', '37']
bgkeys = ['40', '41', '42', '43', '44', '45', '46', '47']
self._txt.insert('end', 'color check:\n')
for bg in bgkeys:
for fg in fgkeys:
self._txt.insert('end', str(fg), (fg, bg))
self._txt.insert('end', str("b" + fg), ("b" + fg, bg))
self._txt.insert('end', '\n')
for fg in fgkeys:
self._txt.insert('end', str(fg), (fg, "b" + bg))
self._txt.insert('end', str("b" + fg), ("b" + fg, "b" + bg))
self._txt.insert('end', '\n')
self._txt.insert('end', '\n')
self._txt.insert('end', '\n')
class Editor(Toplevel):
@property
def text(self):
return self.sc_text.get('1.0', END)
@text.setter
def text(self, value):
pos = self.sc_text.yview()
self.sc_text.delete('1.0', END)
self.sc_text.insert(END, value)
self.sc_text.yview_moveto(pos[0])
def __init__(self, master):
super().__init__(master)
self.index_matches = None
self.current_index = None
self.search_content = StringVar()
self.sc_text = ScrolledText(self, wrap=NONE)
self.x_scrollbar_content_text = Scrollbar(self,
orient=HORIZONTAL,
command=self.sc_text.xview)
self.sc_text.configure(
xscrollcommand=self.x_scrollbar_content_text.set)
self.wrap_text = IntVar()
self.wrap_text.set(False)
Button(self, text='<-', command=self.click_prev_button).grid(row=0,
column=0)
self.search_content_entry = Entry(self,
textvariable=self.search_content)
self.search_content_entry.bind(
'<KeyRelease>',
lambda event: self.highlight_pattern(event.widget.get()))
self.search_content_entry.grid(row=0, column=1, sticky=W + E)
Button(self, text='->', command=self.click_next_button).grid(row=0,
column=2)
Checkbutton(self,
text="Wrap Text",
variable=self.wrap_text,
command=lambda: self.sc_text.config(
wrap=NONE
if not self.wrap_text.get() else WORD)).grid(row=1,
column=0)
self.sc_text.grid(row=2, column=0, columnspan=3, sticky=N + S + E + W)
self.x_scrollbar_content_text.grid(row=3,
column=0,
columnspan=3,
sticky=W + E)
self.columnconfigure(1, weight=1)
self.rowconfigure(2, weight=1)
self.withdraw()
self.protocol('WM_DELETE_WINDOW', lambda t=self: t.withdraw())
def click_next_button(self):
if not self.index_matches:
return
if self.current_index is None:
self.current_index = 0
else:
self.current_index += 1
self.current_index %= len(self.index_matches)
self.sc_text.see(self.index_matches[self.current_index])
def click_prev_button(self):
if not self.index_matches:
return
if self.current_index is None:
self.current_index = len(self.index_matches) - 1
else:
self.current_index -= 1
self.current_index %= len(self.index_matches)
self.sc_text.see(self.index_matches[self.current_index])
def highlight_pattern(self, pattern, start="1.0", end="end"):
for t in self.sc_text.tag_names():
self.sc_text.tag_delete(t)
if not pattern:
return
self.index_matches = []
self.current_index = None
self.sc_text.tag_config('found', background="green")
start = self.sc_text.index(start)
end = self.sc_text.index(end)
self.sc_text.mark_set("matchStart", start)
self.sc_text.mark_set("matchEnd", start)
self.sc_text.mark_set("searchLimit", end)
count = IntVar()
while True:
index = self.sc_text.search(pattern,
"matchEnd",
"searchLimit",
count=count)
if index == "":
break
self.sc_text.mark_set("matchStart", index)
match_index = "%s+%sc" % (index, count.get())
self.index_matches.append(match_index)
self.sc_text.mark_set("matchEnd", match_index)
self.sc_text.tag_add('found', "matchStart", "matchEnd")
class ScrolledTextInfoFrame(Frame):
def __init__(self, master, *args, **kwargs):
self.master = master
super(ScrolledTextInfoFrame, self).__init__(self.master, *args,
**kwargs)
self.saved_time = StringVar()
self.highlighter = Highlighter()
self._create_widgets()
# the associated file
self._file = None
# TODO: rename the textentry
def _create_widgets(self):
# create a Text widget and read in the file
self.textentry = ScrolledText(self, wrap=WORD)
self.textentry.grid(column=0, row=0, columnspan=2, sticky='nsew')
for key, value in self.highlighter.style:
self.textentry.tag_configure(key, foreground=value)
self.save_label = Label(self, textvar=self.saved_time)
self.save_label.grid(column=0, row=1, sticky='es')
self.save_btn = Button(self, text="Save", command=self.save_file)
self.save_btn.grid(column=1, row=1, sticky='es')
self.grid_columnconfigure(0, weight=1)
self.grid_columnconfigure(1, weight=0)
self.grid_rowconfigure(0, weight=1)
self.grid_rowconfigure(1, weight=0)
def update(self):
self._update_savetime()
self.textentry.delete(1.0, END)
with open(self.file.file, 'r') as file:
self.textentry.insert(END, file.read())
if HAS_PYGMENTS:
if self.highlighter.change_type(self.file.dtype):
# remove current tags
for tag in self.textentry.tag_names():
self.textentry.tag_configure(tag, foreground="#000000")
for key, value in self.highlighter.style.items():
self.textentry.tag_configure(key, foreground=value)
self.syn()
def _update_savetime(self):
self.saved_time.set("Last saved:\t{0}\t".format(self.file.saved_time))
@threaded
def syn(self, event=None):
"""
Allow for syntax highlighting.
Source: https://stackoverflow.com/a/30199105
This will highlight the entire document once. Dynamic highlighting not
yet supported.
#TODO: (maybe?): https://stackoverflow.com/questions/32058760/improve-pygments-syntax-highlighting-speed-for-tkinter-text/32064481 # noqa
This is threaded to hopefully stop it blocking the view from displaying
and causing a race condition.
"""
self.textentry.mark_set("range_start", "1.0")
data = self.textentry.get("1.0", "end-1c")
lexer = self.highlighter.lexer
if lexer is not None:
for token, content in lex(data, lexer()):
self.textentry.mark_set("range_end",
"range_start + %dc" % len(content))
self.textentry.tag_add(str(token), "range_start", "range_end")
self.textentry.mark_set("range_start", "range_end")
def save_file(self):
""" Write the current data in the text widget back to the file """
file_contents = self.textentry.get("1.0", "end-1c")
with open(self.file.file, 'w') as file:
file.write(file_contents)
savetime = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
self.file.saved_time = savetime
self._update_savetime()
# also re-apply the syntax highlighting
self.syn()
@property
def file(self):
return self._file
@file.setter
def file(self, other):
"""
Set the file property to whatever the new file is.
When this happens the update command will be called which will redraw
the channel info list
"""
# if the file is being set as a con_file continue
if other != self._file:
self._file = other
self.update()
class Application(tkinter.Tk):
def __init__(self):
"""Initialize widgets, methods."""
tkinter.Tk.__init__(self)
self.grid()
fontoptions = families(self)
font = Font(family="Verdana", size=10)
menubar = tkinter.Menu(self)
fileMenu = tkinter.Menu(menubar, tearoff=0)
editMenu = tkinter.Menu(menubar, tearoff=0)
fsubmenu = tkinter.Menu(editMenu, tearoff=0)
ssubmenu = tkinter.Menu(editMenu, tearoff=0)
# adds fonts to the font submenu and associates lambda functions
for option in fontoptions:
fsubmenu.add_command(label=option, command = lambda: font.configure(family=option))
# adds values to the size submenu and associates lambda functions
for value in range(1,31):
ssubmenu.add_command(label=str(value), command = lambda: font.configure(size=value))
# adds commands to the menus
menubar.add_cascade(label="File",underline=0, menu=fileMenu)
menubar.add_cascade(label="Edit",underline=0, menu=editMenu)
fileMenu.add_command(label="New", underline=1,command=self.new, accelerator="Ctrl+N")
fileMenu.add_command(label="Open", command=self.open, accelerator="Ctrl+O")
fileMenu.add_command(label="Save", command=self.save, accelerator="Ctrl+S")
fileMenu.add_command(label="Exit", underline=1,command=exit, accelerator="Ctrl+Q")
editMenu.add_command(label="Copy", command=self.copy, accelerator="Ctrl+C")
editMenu.add_command(label="Cut", command=self.cut, accelerator="Ctrl+X")
editMenu.add_command(label="Paste", command=self.paste, accelerator="Ctrl+V")
editMenu.add_cascade(label="Font", underline=0, menu=fsubmenu)
editMenu.add_cascade(label="Size", underline=0, menu=ssubmenu)
editMenu.add_command(label="Color", command=self.color)
editMenu.add_command(label="Bold", command=self.bold, accelerator="Ctrl+B")
editMenu.add_command(label="Italic", command=self.italic, accelerator="Ctrl+I")
editMenu.add_command(label="Underline", command=self.underline, accelerator="Ctrl+U")
editMenu.add_command(label="Overstrike", command=self.overstrike, accelerator="Ctrl+T")
editMenu.add_command(label="Undo", command=self.undo, accelerator="Ctrl+Z")
editMenu.add_command(label="Redo", command=self.redo, accelerator="Ctrl+Y")
self.config(menu=menubar)
self.bind_all("<Control-n>", self.new)
self.bind_all("<Control-o>", self.open)
self.bind_all("<Control-s>", self.save)
self.bind_all("<Control-q>", self.exit)
self.bind_all("<Control-b>", self.bold)
self.bind_all("<Control-i>", self.italic)
self.bind_all("<Control-u>", self.underline)
self.bind_all("<Control-T>", self.overstrike)
self.bind_all("<Control-z>", self.undo)
self.bind_all("<Control-y>", self.redo)
self.text = ScrolledText(self, state='normal', height=80, wrap='word', font = font, pady=2, padx=3, undo=True)
self.text.grid(column=0, row=0, sticky='NSEW')
# Frame configuration
self.grid_columnconfigure(0, weight=1)
self.resizable(True, True)
def new(self, *args):
"""Creates a new window."""
app = Application()
app.title('Python Text Editor')
app.option_add('*tearOff', False)
app.mainloop()
def color(self):
"""Changes selected text color."""
try:
(rgb, hx) = tkinter.colorchooser.askcolor()
self.text.tag_add('color', 'sel.first', 'sel.last')
self.text.tag_configure('color', foreground=hx)
except TclError:
pass
def bold(self, *args):
"""Toggles bold for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "bold" in current_tags:
self.text.tag_remove("bold", "sel.first", "sel.last")
else:
self.text.tag_add("bold", "sel.first", "sel.last")
bold_font = Font(self.text, self.text.cget("font"))
bold_font.configure(weight="bold")
self.text.tag_configure("bold", font=bold_font)
except TclError:
pass
def italic(self, *args):
"""Toggles italic for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "italic" in current_tags:
self.text.tag_remove("italic", "sel.first", "sel.last")
else:
self.text.tag_add("italic", "sel.first", "sel.last")
italic_font = Font(self.text, self.text.cget("font"))
italic_font.configure(slant="italic")
self.text.tag_configure("italic", font=italic_font)
except TclError:
pass
def underline(self, *args):
"""Toggles underline for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "underline" in current_tags:
self.text.tag_remove("underline", "sel.first", "sel.last")
else:
self.text.tag_add("underline", "sel.first", "sel.last")
underline_font = Font(self.text, self.text.cget("font"))
underline_font.configure(underline=1)
self.text.tag_configure("underline", font=underline_font)
except TclError:
pass
def overstrike(self, *args):
"""Toggles overstrike for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "overstrike" in current_tags:
self.text.tag_remove("overstrike", "sel.first", "sel.last")
else:
self.text.tag_add("overstrike", "sel.first", "sel.last")
overstrike_font = Font(self.text, self.text.cget("font"))
overstrike_font.configure(overstrike=1)
self.text.tag_configure("overstrike", font=overstrike_font)
except TclError:
pass
def undo(self, *args):
"""Undo function"""
try:
self.text.edit_undo()
except TclError:
pass
def redo(self, *args):
"""Redo function"""
try:
self.text.edit_redo()
except TclError:
pass
def copy(self, *args):
"""Copy text"""
self.clipboard_clear()
self.clipboard_append(self.text.selection_get())
def cut(self, *args):
"""Cut text"""
self.copy
self.text.delete("sel.first", "sel.last")
def paste(self, *args):
"""Paste text"""
insertion = self.selection_get(selection = "CLIPBOARD")
self.text.insert(0.0, insertion)
def open(self, *args):
"""Opens a file dialog to open a plain text file."""
filename = tkinter.filedialog.askopenfilename()
with open(filename) as f:
text = f.read()
self.text.delete("1.0", "end")
self.text.insert('insert', text)
def save(self, *args):
try:
"""Opens a file dialog to save the text in plain text format."""
text = self.text.get("1.0", "end")
filename = tkinter.filedialog.asksaveasfilename()
with open(filename, 'w') as f:
f.write(text)
except FileNotFoundError:
pass
def exit(self, *args):
"""Exits the program."""
self.quit()
class Application(tkinter.Tk):
def __init__(self):
"""Initialize widgets, methods."""
tkinter.Tk.__init__(self)
self.grid()
fontoptions = families(self)
font = Font(family="Verdana", size=10)
menubar = tkinter.Menu(self)
fileMenu = tkinter.Menu(menubar, tearoff=0)
editMenu = tkinter.Menu(menubar, tearoff=0)
fsubmenu = tkinter.Menu(editMenu, tearoff=0)
ssubmenu = tkinter.Menu(editMenu, tearoff=0)
# adds fonts to the font submenu and associates lambda functions
for option in fontoptions:
fsubmenu.add_command(label=option, command = lambda: font.configure(family=option))
# adds values to the size submenu and associates lambda functions
for value in range(1,31):
ssubmenu.add_command(label=str(value), command = lambda: font.configure(size=value))
# adds commands to the menus
menubar.add_cascade(label="File",underline=0, menu=fileMenu)
menubar.add_cascade(label="Edit",underline=0, menu=editMenu)
fileMenu.add_command(label="New", underline=1,
command=self.new, accelerator="Ctrl+N")
fileMenu.add_command(label="Open", command=self.open, accelerator="Ctrl+O")
fileMenu.add_command(label="Save", command=self.save, accelerator="Ctrl+S")
fileMenu.add_command(label="Exit", underline=1,
command=exit, accelerator="Ctrl+Q")
editMenu.add_command(label="Copy", command=self.copy, accelerator="Ctrl+C")
editMenu.add_command(label="Cut", command=self.cut, accelerator="Ctrl+X")
editMenu.add_command(label="Paste", command=self.paste, accelerator="Ctrl+V")
editMenu.add_cascade(label="Font", underline=0, menu=fsubmenu)
editMenu.add_cascade(label="Size", underline=0, menu=ssubmenu)
editMenu.add_command(label="Color", command=self.color)
editMenu.add_command(label="Bold", command=self.bold, accelerator="Ctrl+B")
editMenu.add_command(label="Italic", command=self.italic, accelerator="Ctrl+I")
editMenu.add_command(label="Underline", command=self.underline, accelerator="Ctrl+U")
editMenu.add_command(label="Overstrike", command=self.overstrike, accelerator="Ctrl+T")
editMenu.add_command(label="Undo", command=self.undo, accelerator="Ctrl+Z")
editMenu.add_command(label="Redo", command=self.redo, accelerator="Ctrl+Y")
self.config(menu=menubar)
"""Accelerator bindings. The cut, copy, and paste functions are not
bound to keyboard shortcuts because Windows already binds them, so if
Tkinter bound them as well whenever you typed ctrl+v the text would be
pasted twice."""
self.bind_all("<Control-n>", self.new)
self.bind_all("<Control-o>", self.open)
self.bind_all("<Control-s>", self.save)
self.bind_all("<Control-q>", self.exit)
self.bind_all("<Control-b>", self.bold)
self.bind_all("<Control-i>", self.italic)
self.bind_all("<Control-u>", self.underline)
self.bind_all("<Control-T>", self.overstrike)
self.bind_all("<Control-z>", self.undo)
self.bind_all("<Control-y>", self.redo)
self.text = ScrolledText(self, state='normal', height=30, wrap='word', font = font, pady=2, padx=3, undo=True)
self.text.grid(column=0, row=0, sticky='NSEW')
# Frame configuration
self.grid_columnconfigure(0, weight=1)
self.resizable(True, True)
"""Command functions. *args is included because the keyboard bindings pass
two arguments to the functions, while clicking in the menu passes only 1."""
def new(self, *args):
"""Creates a new window."""
app = Application()
app.title('Python Text Editor')
app.option_add('*tearOff', False)
app.mainloop()
def color(self):
"""Changes selected text color."""
try:
(rgb, hx) = tkinter.colorchooser.askcolor()
self.text.tag_add('color', 'sel.first', 'sel.last')
self.text.tag_configure('color', foreground=hx)
except TclError:
pass
def bold(self, *args):
"""Toggles bold for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "bold" in current_tags:
self.text.tag_remove("bold", "sel.first", "sel.last")
else:
self.text.tag_add("bold", "sel.first", "sel.last")
bold_font = Font(self.text, self.text.cget("font"))
bold_font.configure(weight="bold")
self.text.tag_configure("bold", font=bold_font)
except TclError:
pass
def italic(self, *args):
"""Toggles italic for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "italic" in current_tags:
self.text.tag_remove("italic", "sel.first", "sel.last")
else:
self.text.tag_add("italic", "sel.first", "sel.last")
italic_font = Font(self.text, self.text.cget("font"))
italic_font.configure(slant="italic")
self.text.tag_configure("italic", font=italic_font)
except TclError:
pass
def underline(self, *args):
"""Toggles underline for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "underline" in current_tags:
self.text.tag_remove("underline", "sel.first", "sel.last")
else:
self.text.tag_add("underline", "sel.first", "sel.last")
underline_font = Font(self.text, self.text.cget("font"))
underline_font.configure(underline=1)
self.text.tag_configure("underline", font=underline_font)
except TclError:
pass
def overstrike(self, *args):
"""Toggles overstrike for selected text."""
try:
current_tags = self.text.tag_names("sel.first")
if "overstrike" in current_tags:
self.text.tag_remove("overstrike", "sel.first", "sel.last")
else:
self.text.tag_add("overstrike", "sel.first", "sel.last")
overstrike_font = Font(self.text, self.text.cget("font"))
overstrike_font.configure(overstrike=1)
self.text.tag_configure("overstrike", font=overstrike_font)
except TclError:
pass
def undo(self, *args):
"""Undo function"""
try:
self.text.edit_undo()
except TclError:
pass
def redo(self, *args):
"""Redo function"""
try:
self.text.edit_redo()
except TclError:
pass
def copy(self, *args):
"""Copy text"""
self.clipboard_clear()
self.clipboard_append(self.text.selection_get())
def cut(self, *args):
"""Cut text"""
self.copy
self.text.delete("sel.first", "sel.last")
def paste(self, *args):
"""Paste text"""
insertion = self.selection_get(selection = "CLIPBOARD")
self.text.insert(0.0, insertion)
def open(self, *args):
"""Opens a file dialog to open a plain text file."""
filename = tkinter.filedialog.askopenfilename()
with open(filename) as f:
text = f.read()
self.text.delete("1.0", "end")
self.text.insert('insert', text)
def save(self, *args):
try:
"""Opens a file dialog to save the text in plain text format."""
text = self.text.get("1.0", "end")
filename = tkinter.filedialog.asksaveasfilename()
with open(filename, 'w') as f:
f.write(text)
except FileNotFoundError:
pass
def exit(self, *args):
"""Exits the program."""
self.quit()
