from Tkinter import *
import tkFileDialog
import tkMessageBox
import os
root = Tk()
root.geometry('800x500')
root.title('Untitled - Tkeditor')
root.iconbitmap('icons/pypad.ico')
def popup(event):
cmenu.tk_popup(event.x_root, event.y_root, 0)
#theme choice
def theme():
global bgc,fgc
val = themechoice.get()
clrs = clrschms.get(val)
fgc, bgc = clrs.split('.')
fgc, bgc = '#'+fgc, '#'+bgc
textPad.config(bg=bgc, fg=fgc)
def show_info_bar():
val = showinbar.get()
if val:
infobar.pack(expand=NO, fill=None, side=RIGHT, anchor='se')
elif not val:
infobar.pack_forget()
def update_line_number(event=None):
txt = ''
if showln.get():
endline, endcolumn = textPad.index('end-1c').split('.')
txt = '\n'.join(map(str, range(1, int(endline))))
lnlabel.config(text=txt, anchor='nw')
currline, curcolumn = textPad.index("insert").split('.')
infobar.config(text='Line: %s | Column: %s' %(currline,curcolumn) )
def highlight_line(interval=100):
textPad.tag_remove("active_line", 1.0, "end")
textPad.tag_add("active_line", "insert linestart", "insert lineend+1c")
textPad.after(interval, toggle_highlight)
def undo_highlight():
textPad.tag_remove("active_line", 1.0, "end")
def toggle_highlight(event=None):
val = hltln.get()
undo_highlight() if not val else highlight_line()
#########################################################################
def about():
tkMessageBox.showinfo("About", "A Editor using Tkinter by Leohc92")
def help_box(event=None):
tkMessageBox.showinfo("Help", "For help email to chenyu.wu@outlook.com", icon='question')
def exit_editor():
if tkMessageBox.askokcancel("Quti", "Do you really want to quit?"):
root.destroy()
root.protocol('WM_DELETE_WINDOW',exit_editor)
#########################################################################
#demo of indexing and tagging features of text widget
def select_all(event=None):
textPad.tag_add('sel', '1.0', 'end')
def on_find(event=None):
t2 = Toplevel(root)
t2.title('Find')
t2.geometry('300x65+200+250')
t2.transient(root)
Label(t2,text="Find All:").grid(row=0, column=0, pady=4, sticky='e')
v=StringVar()
e = Entry(t2, width=25, textvariable=v)
e.grid(row=0, column=1, padx=2, pady=4, sticky='we')
c=IntVar()
Checkbutton(t2, text='Ignore Case', variable=c).grid(row=1, column=1, sticky='e', padx=2, pady=2)
Button(t2, text='Find All', underline=0, command=lambda:search_for(v.get(), c.get(), textPad, t2, e)).grid(row=0, column=2, sticky='e'+'w', padx=2, pady=4)
def close_search():
textPad.tag_remove('match', '1.0', END)
t2.destroy()
t2.protocol('WM_DELETE_WINDOW', close_search)
def search_for(needle,cssnstv, textPad, t2,e) :
textPad.tag_remove('match', '1.0', END)
count =0
if needle:
pos = '1.0'
while True:
pos = textPad.search(needle, pos, nocase=cssnstv, stopindex=END)
if not pos: break
lastpos = '%s+%dc' % (pos, len(needle))
textPad.tag_add('match', pos, lastpos)
count += 1
pos = lastpos
textPad.tag_config('match', foreground='red', background='yellow')
e.focus_set()
t2.title('%d matches found' %count)
########################################################################
#Levaraging built in text widget functionalities
def undo():
textPad.event_generate("<<Undo>>")
update_line_number()
def redo():
textPad.event_generate("<<Redo>>")
update_line_number()
def cut():
textPad.event_generate("<<Cut>>")
update_line_number()
def copy():
textPad.event_generate("<<Copy>>")
update_line_number()
def paste():
textPad.event_generate("<<Paste>>")
update_line_number()
######################################################################
def new_file(event=None):
global filename
filename = None
root.title("Untitled - Tkeditor")
textPad.delete(1.0, END)
update_line_number()
def open_file(event=None):
global filename
filename = tkFileDialog.askopenfilename(defaultextension=".txt",filetypes=[("All Files","*.*"),("Text Documents","*.txt")])
if filename == "": # If no file chosen.
filename = None # Absence of file.
else:
root.title(os.path.basename(filename) + " - Tkeditor") # Returning the basename of 'file'
textPad.delete(1.0,END)
fh = open(filename,"r")
textPad.insert(1.0,fh.read())
fh.close()
update_line_number()
def save(event=None):
global filename
try:
f = open(filename, 'w')
letter = textPad.get(1.0, 'end')
f.write(letter)
f.close()
except:
save_as()
def save_as():
try:
# Getting a filename to save the file.
f = tkFileDialog.asksaveasfilename(initialfile='Untitled.txt',defaultextension=".txt",filetypes=[("All Files","*.*"),("Text Documents","*.txt")])
fh = open(f, 'w')
global filename
filename = f
textoutput = textPad.get(1.0, END)
fh.write(textoutput)
fh.close()
root.title(os.path.basename(f) + " - Tkeditor") # Setting the title of the root widget.
except:
pass
######################################################################
#defining icons for compund menu demonstration
newicon = PhotoImage(file='icons/new_file.gif')
openicon = PhotoImage(file='icons/open_file.gif')
saveicon = PhotoImage(file='icons/Save.gif')
cuticon = PhotoImage(file='icons/Cut.gif')
copyicon = PhotoImage(file='icons/Copy.gif')
pasteicon = PhotoImage(file='icons/Paste.gif')
undoicon = PhotoImage(file='icons/Undo.gif')
redoicon = PhotoImage(file='icons/Redo.gif')
#Define a menu bar
menubar = Menu(root)
#File menu
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label="New", accelerator='Ctrl+N', compound=LEFT, image=newicon, underline=0, command=new_file)
filemenu.add_command(label="Open", accelerator='Ctrl+O', compound=LEFT, image=openicon, underline=0, command=open_file)
filemenu.add_command(label="Save", accelerator='Ctrl+S', compound=LEFT, image=saveicon, underline=0, command=save)
filemenu.add_command(label="Save as", accelerator='Shift+Ctrl+S', command=save_as)
filemenu.add_command(label="Exit", accelerator='Alt+F4', command=exit_editor)
menubar.add_cascade(label="File", menu=filemenu)
#Edit menu
editmenu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="Edit", menu=editmenu)
editmenu.add_command(label="Undo", compound=LEFT, image=undoicon, accelerator='Ctrl+Z', command=undo)
editmenu.add_command(label="Redo", compound=LEFT, image=redoicon, accelerator='Ctrl+Y', command=redo)
editmenu.add_separator()
editmenu.add_command(label="Cut", compound=LEFT, image=cuticon, accelerator='Ctrl+X', command=cut)
editmenu.add_command(label="Copy", compound=LEFT, image=copyicon, accelerator='Ctrl+C', command=copy)
editmenu.add_command(labe="Paste", compound=LEFT, image=pasteicon, accelerator='Ctrl+V', command=paste)
editmenu.add_separator()
editmenu.add_command(label="Find", underline=0, accelerator='Ctrl+F', command=on_find)
editmenu.add_separator()
editmenu.add_command(label="Select All", accelerator='Ctrl+A', underline=7, command=select_all)
#View menu
viewmenu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="View", menu=viewmenu)
showln = IntVar()
showln.set(1)
viewmenu.add_checkbutton(label="Show Line Number", variable=showln)
showinbar = IntVar()
showinbar.set(1)
viewmenu.add_checkbutton(label="Show Info Bar at Bottom", variable=showinbar, command=show_info_bar)
hltln = IntVar()
viewmenu.add_checkbutton(label="Highlight Current Line", variable=hltln, command=toggle_highlight)
themesmenu = Menu(viewmenu, tearoff=0)
viewmenu.add_cascade(label="Themes", menu=themesmenu)
#we define a color scheme dictionary containg name and color code as key value pair
clrschms = {
'1. Default White': '000000.FFFFFF',
'2. Greygarious Grey':'83406A.D1D4D1',
'3. Lovely Lavender':'202B4B.E1E1FF' ,
'4. Aquamarine': '5B8340.D1E7E0',
'5. Bold Beige': '4B4620.FFF0E1',
'6. Cobalt Blue':'ffffBB.3333aa',
'7. Olive Green': 'D1E7E0.5B8340',
}
themechoice= StringVar()
themechoice.set('1. Default White')
for k in sorted(clrschms):
themesmenu.add_radiobutton(label=k, variable=themechoice, command=theme)
#About menu
aboutmenu = Menu(menubar, tearoff=0)
menubar.add_cascade(label="About", menu=aboutmenu)
aboutmenu.add_command(label="About", command=about)
aboutmenu.add_command(label="Help", command=help_box)
root.config(menu=menubar)
#shortcut bar and line number
shortcutbar = Frame(root, height=25)
icons = ['new_file', 'open_file', 'save', 'cut', 'copy', 'paste', 'undo', 'redo', 'on_find', 'about']
for i, icon in enumerate(icons):
tbicon = PhotoImage(file='icons/'+icon+'.gif')
cmd = eval(icon)
toolbar = Button(shortcutbar, image=tbicon, command=cmd)
toolbar.image = tbicon #http://effbot.org/tkinterbook/photoimage.htm
toolbar.pack(side=LEFT)
shortcutbar.pack(expand=NO, fill=X)
lnlabel = Label(root, width=2, bg = 'antique white')
lnlabel.pack(side=LEFT, fill=Y)
#Text widget and scrollbar widget
#####################################
textPad = Text(root, undo=True)
textPad.pack(expand=YES, fill=BOTH)
scroll=Scrollbar(textPad)
textPad.configure(yscrollcommand=scroll.set)
scroll.config(command=textPad.yview)
scroll.pack(side=RIGHT, fill=Y)
#Info Bar
infobar = Label(textPad, text='Line: 1 | Column:0')
infobar.pack(expand=NO, fill=None, side=RIGHT, anchor='se')
#context popup menu
cmenu = Menu(textPad,tearoff=0)
for i in ('cut', 'copy', 'paste', 'undo', 'redo'):
cmd = eval(i)
cmenu.add_command(label=i, compound=LEFT, command=cmd)
cmenu.add_separator()
cmenu.add_command(label='Select All', underline=7, command=select_all)
textPad.bind("<Button-3>", popup)
#################################################
#Add events
#Binding events
textPad.bind('<Control-N>', new_file)
textPad.bind('<Control-n>', new_file)
textPad.bind('<Control-O>', open_file)
textPad.bind('<Control-o>', open_file)
textPad.bind('<Control-S>', save)
textPad.bind('<Control-s>', save)
textPad.bind('<Control-A>', select_all)
textPad.bind('<Control-a>', select_all)
textPad.bind('<Control-f>', on_find)
textPad.bind('<Control-F>', on_find)
textPad.bind('<KeyPress-F1>', help_box)
textPad.bind("<Any-KeyPress>", update_line_number)
textPad.tag_configure("active_line", background="ivory2")
root.mainloop()
