I'm trying to make a jpeg on a canvas scrollable but I can't seem to get my scrollbars to work. Here's some example code:
from Tkinter import *
import Image, ImageTk
root = Tk()
frame = Frame(root, bd=2, relief=SUNKEN)
frame.grid_rowconfigure(0, weight=1)
frame.grid_columnconfigure(0, weight=1)
xscrollbar = Scrollbar(frame, orient=HORIZONTAL)
xscrollbar.grid(row=1, column=0, sticky=E+W)
yscrollbar = Scrollbar(frame)
yscrollbar.grid(row=0, column=1, sticky=N+S)
canvas = Canvas(frame, bd=0, xscrollcommand=xscrollbar.set, yscrollcommand=yscrollbar.set)
canvas.grid(row=0, column=0, sticky=N+S+E+W)
File = "jpg filepath here"
img = ImageTk.PhotoImage(Image.open(File))
canvas.create_image(0,0,image=img, anchor="nw")
xscrollbar.config(command=canvas.xview)
yscrollbar.config(command=canvas.yview)
frame.pack()
root.mainloop()
You need to tell the canvas what part of the drawing space to scroll. Use something like:
canvas.config(scrollregion=canvas.bbox(ALL))
More information can be found here: http://effbot.org/tkinterbook/canvas.htm#coordinate-systems
Related
The 2 buttons should take each of the half of the window, one on the left, one on the right. The height is fixed all time. With .grid() nor .place() I can come to that result. The red bar is the color of the frame where the buttons are placed on. The buttons resize in width with the window, but keep their constant height.
How to?
import tkinter as tk
root = tk.Tk()
frame = tk.Frame(root, bg='red')
frame.pack(fill='both', expand=True)
button1 = tk.Button(frame, text="<<")
button2 = tk.Button(frame, text=">>")
button1.grid(row=0, column=0, sticky='nsew')
button2.grid(row=0, column=1, sticky='nsew')
frame.columnconfigure(0, weight=1)
frame.columnconfigure(1, weight=1)
root.mainloop()
Thx.
In the mean time I got this:
import tkinter as tk
root = tk.Tk()
frame = tk.Frame(root, bg='red',height=30)
frame.pack(fill='both')
button1 = tk.Button(frame, text="<<")
button2 = tk.Button(frame, text=">>")
button1.place(relwidth=0.5, relx=0, relheight=1)
button2.place(relwidth=0.5, relx=0.5, relheight=1)
root.mainloop()
Assuming that the buttons are the only widgets in the frame (ie: you are making a toolbar), I would use pack. grid will also work, but it requires one extra line of code.
Using pack
Here's a version with pack. Notice that the frame is packed along the top and fills the window in the "x" direction. The buttons each are instructed to expand (ie: receive extra, unused space) and to fill the space allocated to them in the "x" direction.
import tkinter as tk
root = tk.Tk()
frame = tk.Frame(root, bg='red',height=30)
frame.pack(side="top", fill="x")
button1 = tk.Button(frame, text="<<")
button2 = tk.Button(frame, text=">>")
button1.pack(side="left", fill="x", expand=True)
button2.pack(side="right", fill="x", expand=True)
root.mainloop()
Using Grid
A version with grid is similar, but you must use columnconfigure to give a non-zero weight to the two columns:
import tkinter as tk
root = tk.Tk()
frame = tk.Frame(root, bg='red',height=30)
frame.pack(side="top", fill="x")
button1 = tk.Button(frame, text="<<")
button2 = tk.Button(frame, text=">>")
button1.grid(row=0, column=0, sticky="ew")
button2.grid(row=0, column=1, sticky="ew")
frame.grid_columnconfigure((0, 1), weight=1)
root.mainloop()
I have made a user interface but my scrollbar is not working. it is working if i add content statically but when i add frames from button click then it adds new frame but not scrolling to view bottom content or we can say the scroll bar is disabled.
Here is my code:
import tkinter as tk
from tkinter import *
from PIL import ImageTk, Image
root = tk.Tk()
root.grid_rowconfigure(0, weight=1)
root.columnconfigure(0, weight=1)
root.title("Hello Python")
root.configure(bg="#010523")
root.iconbitmap('logo.ico')
root.geometry("400x500")
frame_main = tk.Frame(root, bg="#010523")
frame_main.grid(sticky='news')
# ********************header frame********************************
header_frame = LabelFrame(frame_main, bg="#010523", border=0, height=100)
header_frame.grid(row=0, column=0, columnspan=2, sticky='ew')
width =50
height =50
photo= Image.open("logo.png")
photo= photo.resize((width, height),Image.ANTIALIAS)
# create an object of PhotoImage
photoImg = ImageTk.PhotoImage(photo)
photo_label= Label(header_frame, image=photoImg, bg="#010523")
photo_label.grid(row=0, column=0, rowspan=2)
# Label
public_broadcast = Label(header_frame, text="Public broadcast",
font="bold", bg="#010523", fg="white")
public_broadcast.grid(row=0, column=1)
_id = Label(header_frame, text="MY ID: 0013A20041EFD12C",
font="10", bg="#010523", fg="grey")
_id.grid(row=1, column=1, padx=10)
# ********************end of header frame*************************
# label1 = tk.Label(frame_main, text="Label 1", fg="green")
# label1.grid(row=0, column=0, pady=(5, 0), sticky='nw')
# label2 = tk.Label(frame_main, text="Label 2", fg="blue")
# label2.grid(row=1, column=0, pady=(5, 0), sticky='nw')
# label3 = tk.Label(frame_main, text="Label 3", fg="red")
# label3.grid(row=3, column=0, pady=5, sticky='nw')
# Create a frame for the canvas with non-zero row&column weights
frame_canvas = tk.Frame(frame_main)
frame_canvas.grid(row=2, column=0, pady=(5, 0), sticky='nw')
frame_canvas.grid_rowconfigure(0, weight=1)
frame_canvas.grid_columnconfigure(0, weight=1)
# Set grid_propagate to False to allow 5-by-5 buttons resizing later
frame_canvas.grid_propagate(False)
# Add a canvas in that frame
canvas = tk.Canvas(frame_canvas, bg="yellow")
canvas.grid(row=0, column=0, sticky="news")
# Link a scrollbar to the canvas
vsb = tk.Scrollbar(frame_canvas, orient=VERTICAL, command=canvas.yview)
vsb.grid(row=0, column=1, sticky='ns')
canvas.configure(yscrollcommand=vsb.set)
# Create a frame to contain the buttons
frame_buttons = tk.Frame(canvas, bg="blue")
# Add 9-by-5 buttons to the frame
last_frame_row = 3
frame_canvas.config(width=400, height=300)
# Entering self msg frame with text
def add_msg_frame():
global last_frame_row
msg = "This is a test msg"
# msg = e.get()
# e.delete(0, END)
new_frame = Frame(frame_buttons, bg="#4857a8", borderwidth=0)
new_frame.grid(row=last_frame_row, column=1, columnspan=2, sticky='e', pady=5)
last_frame_row += 1
new_label = Label(new_frame, text=msg, font="10", bg="#4857a8", fg="white")
new_label.grid(row=0, column=0)
canvas.create_window((0, 0), window=frame_buttons, anchor='nw')
def add_reply_msg(device_id="0983ADFCD9827sd", msg="this is a sample message"):
global last_frame_row
new_frame = Frame(frame_buttons, bg="#1f243f", borderwidth=0)
new_frame.grid(row=last_frame_row, column=0, columnspan=2, sticky='w', pady=5)
last_frame_row += 1
new_label = Label(new_frame, text=device_id, bg="#1f243f", font="10", fg="#a6a6a6")
new_label.grid(row=0, column=0)
new_label2 = Label(new_frame, text=msg, font="10", bg="#1f243f", fg="white")
new_label2.grid(row=1, column=0)
# Update buttons frames idle tasks to let tkinter calculate buttons sizes
# for i in range(30):
# add_msg_frame()
add_reply_msg()
add_reply_msg()
add_msg_frame()
frame_buttons.update_idletasks()
# Set the canvas scrolling region
canvas.config(scrollregion=canvas.bbox("all"), yscrollcommand=vsb.set)
canvas.create_window((0, 0), window=frame_buttons, anchor='nw')
canvas.bind('<Configure>', lambda e: canvas.configure(scrollregion=canvas.bbox("all")))
# # Entry
eFrame = Frame(root, width=400, height=100)
eFrame.grid(row=1000, column=0)
e = Entry(eFrame, width=50)
e.grid(row=0, column=0)
ebtn = Button(eFrame, text="Send", bg="skyblue", command=add_msg_frame)
ebtn.grid(row=0, column=1)
# Launch the GUI
root.mainloop()
Please give me suggestions that how can i enable scrollbar when add a frame by clicking the send button.
Thank you.
You need to update the scrollregion whenever you add or modify things on the canvas.
frame_buttons will be resized when items are added to it, so you need to update the scrollregion of the canvas in this case via bind('<Configure>', ...). Also it is better to call canvas.create_window((0, 0), window=frame_buttons, anchor='nw') once outside the function add_msg_frame():
...
# Create a frame to contain the buttons
frame_buttons = tk.Frame(canvas, bg="blue")
# call canvas.create_window(...) once here
canvas.create_window((0, 0), window=frame_buttons, anchor='nw')
# update scrollregion of canvas whenever the frame is resized
frame_buttons.bind('<Configure>', lambda e: canvas.config(scrollregion=canvas.bbox('all')))
...
i've the problem for make an GUI apps with python tkinter.
here is my sample code
import tkinter as tk
from tkinter import ttk
root = tk.Tk()
root.geometry('300x300')
root.title('CSV Editor')
notebook = ttk.Notebook(root)
notebook.pack(pady=10, expand=True)
tab_home = ttk.Frame(notebook, width=300, height=300)
notebook.add(tab_home, text='Home')
fr_home = tk.Frame(tab_home, background="white")
fr_home.grid(row=0, column=0)
fr_home_container_canvas = tk.Frame(fr_home, background="red")
fr_home_container_canvas.grid(row=0, column=0, sticky='nw')
fr_home_container_canvas.grid_rowconfigure(0, weight=1)
fr_home_container_canvas.grid_columnconfigure(0, weight=1)
fr_home_container_canvas.grid_propagate(False)
canvas_home = tk.Canvas(fr_home_container_canvas)
canvas_home.grid(row=0, column=0, sticky="news")
vsb = tk.Scrollbar(fr_home_container_canvas, orient="vertical", command=canvas_home.yview)
vsb.grid(row=0, column=1, sticky='ns')
canvas_home.configure(yscrollcommand=vsb.set)
fr_home_widget_canvas = tk.Frame(canvas_home, background="yellow")
canvas_home.create_window((0, 0), window=fr_home_widget_canvas, anchor='nw')
fr_home_widget_canvas.config(width=300, height=300, padx=10)
fr_home_container_canvas.config(width=300, height=300)
canvas_home.config(scrollregion=canvas_home.bbox("all"))
text_widget = tk.Text(fr_home_widget_canvas, width = 30, height = 10)
text_widget.grid(column=0, row=0)
root.mainloop()
if i run this code, this is the preview
enter image description here
but when i click inside the text widget, in the frame appear line / border like this
enter image description here
What is that line / border? how to remove it?
thank you so much :)
It is the highlight background which can be removed by setting highlightthickness=0:
canvas_home = tk.Canvas(fr_home_container_canvas, highlightthickness=0)
The scroll don't work at all. What's wrong in the code?
I'm using Python 2.7.16
I read that listbox and text widgets are used only for text. As I want to use labels, I'm trying to insert the labels in a frame, but as a Frame didn't scroll I decided to use a canvas. But I couldn't get it to work.
from Tkinter import *
root = Tk()
frame = Frame(root, width=300, height=200)
frame.grid(row=0, column=0)
canvas=Canvas(frame, bg='#FFFFFF', width=300, height=200, scrollregion=(0,0,500,500))
vbar = Scrollbar(frame, orient=VERTICAL)
vbar.pack(side=RIGHT, fill=Y)
canvas.config(width=300, height=250)
canvas.pack(side=LEFT, expand=True, fill=BOTH)
mylist = Frame(canvas, width=100)
for x in range(10):
texto = Label(mylist, text='CODE', bd=2, width=7, relief=RIDGE)
texto.grid(row=x, column=0)
texto1 = Label(mylist, text='EQUIPAMENT', bd=2, width=20, relief=RIDGE)
texto1.grid(row=x, column=1)
mylist.place(x=0, y=0)
vbar.config(command=canvas.yview)
canvas.config(yscrollcommand=vbar.set)
mainloop()
Yes there are many stackoverflow questions regarding this, i saw everything but could not get this working so i am asking a new question with my code:
Basically i want to create a table in tkinter with 4 columns. But i want to be able to scroll this because the rows will be later taken from the mysql database. but i cannot get the scroll working.
Here is my code :
from tkinter import *
root = Tk()
root.geometry("700x600")
frame_canvas = Frame(root)
frame_canvas.rowconfigure(0, weight=1)
frame_canvas.columnconfigure(0, weight=1)
frame_canvas.grid(row=0, column=0, sticky="news")
canvas = Canvas(frame_canvas)
canvas.grid(row=0, column=0, sticky="news")
vsb = Scrollbar(frame_canvas, orient="vertical", command=canvas.yview)
vsb.grid(row=0, column=1, sticky='ns')
canvas.configure(yscrollcommand=vsb.set)
for i in range(0, 50):
for j in range(0, 4):
canvas.columnconfigure(j, minsize=150)
Label(canvas, text="hello"+str(i)+str(j)).grid(row=i, column=j)
canvas.config(scrollregion=canvas.bbox("all"))
app = root
root.mainloop()
How to i get the canvas to scroll ? Is there another way to create a table ? Also later if i want to add a row to the bottom of the table, how is it possible ? or do i have to clear the whole canvas and re-render it or something ?
EDIT
Have added a frame window to the canvas. Still scroll won't work. That could be the issue now ?
from tkinter import *
root = Tk()
root.geometry("700x600")
frame_canvas = Frame(root)
frame_canvas.rowconfigure(0, weight=1)
frame_canvas.columnconfigure(0, weight=1)
frame_canvas.grid(row=0, column=0, sticky="news")
canvas = Canvas(frame_canvas, height=600, width=500)
canvas.grid(row=0, column=0, sticky="news")
vsb = Scrollbar(frame_canvas, command=canvas.yview, orient="vertical")
vsb.grid(row=0, column=1, sticky='ns')
canvas.configure(yscrollcommand=vsb.set)
frame2 = Frame(canvas, bg="powder blue", height=600, width=700)
canvas.create_window((0, 0), anchor="nw", height=600, width=600, window=frame2)
for i in range(0, 50):
for j in range(0, 4):
frame2.columnconfigure(j, minsize=120)
Label(frame2, bg="powder blue", text="hello"+str(i)+str(j)).grid(row=i, column=j)
canvas.config(scrollregion=frame2.bbox("all"))
app = root
root.mainloop()