So im having trouble making a horizontal scroll bar with grid and have been trying to mix and match different parameters and such and I've hit a rock with this tutorial
https://newbedev.com/tkinter-canvas-scrollbar-with-grid
being the first example
this is my code so far
window = tk.Tk()
window.geometry("1200x600")
frame_main = tk.Frame(window, bg="gray")
frame_main.grid(sticky='news')
# Create a frame for the canvas with non-zero row&column weights
frame_canvas = tk.Frame(frame_main)
frame_canvas.grid(row=0, column=0, pady=(5, 0), sticky='nw')
frame_canvas.grid_rowconfigure(0, weight=1)
frame_canvas.grid_columnconfigure(0, weight=1)
# Add a canvas in that frame
canvas = tk.Canvas(frame_canvas, bg="yellow")
canvas.grid(row=2, column=2, sticky="news")
# Link a scrollbar to the canvas
vsb = tk.Scrollbar(window, orient="horizontal", command=canvas.xview)
vsb.grid(row=0, column=2, sticky='we')
canvas.configure(xscrollcommand=vsb.set)
frame_canvas.config(width=first5columns_width + vsb.winfo_width(),height=first5rows_height)
canvas.config(scrollregion=canvas.bbox("all"))
col_0_head = tk.Label(window, text = " Adventures_Sherlock_Holmes.txt ", pady = 20) # pady = 20 gives some vertical
# separation between this row and the next
col_0_head.grid(row = 0, column = 0)
col_1_head = tk.Label(window, text = " Age_Innocence.txt ")
col_1_head.grid(row = 0, column = 1)
col_2_head = tk.Label(window, text = " Alice_Wonderland.txt ")
col_2_head.grid(row = 0, column = 2)
window.mainloop()
If you want to create a scroll bar in tkitner using grid option, you can simply create a scrollframe and pack the scrollbar in that frame
This is the type of code you can write:
scrollframe = Frame(root)
scrollframe.grid(...)
scrollx = Scrollbar(scrollframe, orient=HORIZONTAL)
scrollx.pack(expand=1, fill=X, side=BOTTOM)
This should ideally work if you don't want the scrollbar to fill your entire GUI Bottom X-axis. In case you are ok with it filling the entire GUI, then just pack the scrollbar in your root or Tk widget.
Thank You!
Two problems in your code.
The first is no scrollregion in canvas.
The second is wrong grid row and column values.
Here's a code snippet that solves your problem.
# Add a canvas in that frame
canvas = tk.Canvas(frame_canvas, bg="yellow", scrollregion = "0 0 2000 2000")
canvas.grid(row=2, column=2, sticky="news")
# Link a scrollbar to the canvas
vsb = tk.Scrollbar(window, orient="horizontal", command=canvas.xview)
vsb.grid(row=1, column=0, sticky='ew')
canvas.configure(xscrollcommand=vsb.set)
Related
i only get one picture at the bottom but theres supposed to be 10 all in a vertical tower any idea? also was wondering if the tkinter scrollbar command could have images inside it if not is there any other way to have a scrollbar for lables?
def show_data(self):
print('------------------------------------------------------------------------')
print('data OK')
for i in range(10):
self.image = Image.open(self.data[i][7] + '.jpg')
self.photo = ImageTk.PhotoImage(self.image)
#result0 = Label(self.frame, text=self.data[i][0])
#result0.grid(row=i+3, column=1, sticky=W)
#result1 = Label(self.frame, text=self.data[i][1])
#result1.grid(row=i+3, column=2, sticky=W)
#result2 = Label(self.frame, text=self.data[i][2])
#result2.grid(row=i+3, column=3, sticky=W)
#result3 = Label(self.frame, text=self.data[i][3])
#result3.grid(row=i+3, column=4, sticky=W)
#result4 = Label(self.frame, text=self.data[i][4])
#result4.grid(row=i+3, column=5, sticky=W)
#result5 = Label(self.frame, text=self.data[i][5])
#result5.grid(row=i+3, column=6, sticky=W)
#result6 = Label(self.frame, text=self.data[i][6])
#result6.grid(row=i+3, column=7, sticky=W)
result7 = Label(self.frame, image=self.photo)
result7.grid(row=i + 3, column=8, sticky=W)
In order to keep the image used in label from being destroyed, you need to keep a reference to the image:
def show_data(self):
print('------------------------------------------------------------------------')
print('data OK')
for i in range(10):
photo = ImageTk.PhotoImage(file=self.data[i][7]+'.jpg')
result7 = Label(self.frame, image=photo)
result7.image = photo # keep a reference of the image
result7.grid(row=i + 3, column=8, sticky=W)
To have a scrollbar for the labels inside a frame, the most common way is to put the frame inside a canvas and then create a scrollbar to scroll the view region of the canvas:
# create a canvas and put it as the left side of window
canvas = Canvas(self.master, width=200, height=600) # assume self.master is Tk()
canvas.pack(side='left')
# create an vertical scrollbar and put it at the right side of window
scrollbar = Scrollbar(self.master, orient='vertical', command=canvas.yview)
scrollbar.pack(side='right', fill='y')
# configure the scrollbar to scroll the canvas in vertical direction
canvas.configure(yscrollcommand=scrollbar.set)
# create the frame as child of canvas to hold the labels
self.frame = Frame(canvas)
canvas.create_window((0,0), window=self.frame, anchor='nw')
# make sure to update the scrolling region if the frame is resized
self.frame.bind('<Configure>', lambda e: canvas.configure(scrollregion=canvas.bbox('all')))
scrollbar in Top level window created for a canvas is not working and how do I get region of canvas. where canvas size varies with number of buttons in it
I have created frame in tk(root) and one widget in a frame creates Top level window , which has multiple Buttons in a Frame.Number of Button varies with list. That Frame(which has buttons in it) exists in a canvas. My problem is that after putting scroll widget canvas do not moves
from tkinter import *
root = Tk()
root.geometry("500x200")
my_app= Frame(root)
my_app.pack()
my_window = Toplevel(my_app, bg='brown')
my_window.geometry("500x200+300+500")
top_window = Frame(my_window, bd=2, relief=SUNKEN)
top_window.grid_columnconfigure(0, weight=1)
yscrollbar = Scrollbar(top_window)
yscrollbar.grid(row=0, column=1, sticky=N+S)
canvas = Canvas(top_window, bd=0, yscrollcommand=yscrollbar.set)
canvas.config(scrollregion=(0, 0, 500, 1000))
canvas.grid(row=0, column=0, sticky=N+S+E+W)
yscrollbar.config( command = canvas.yview)
top_window.pack()
my_f = Frame(canvas)
def ins_ind(m):
print(m)
results =
["one","two","three","four","five","six","seven","eight","nine","ten"]
ins_list=[]
for ind, result in enumerate(results):
ins=str(result)
ins_list.append(ind)
ins_list[ind] = Button(my_f, text = ins, font='Times 12 bold',
bg='sandy brown',anchor=E, fg="black", command = lambda m=ins:
ins_ind(m) )
ins_list[ind].pack()
my_f.pack()
root.mainloop()
Scroll bar do no moves
For the buttons to move when you scroll the canvas you must put the buttons on the canvas.
Your code puts the buttons on the frame my_f. To put the buttons on the canvas you should use: canvas.create_window(x, y, window=button).
I have a canvas in a frame
photoFrame = Frame(centerFrame, width=250, height=190, bg="#EBEBEB")
photoFrame.grid(row=0, column=1, sticky="nsew")
photoCanvas = Canvas(photoFrame, bg="#EBEBEB")
photoCanvas.grid(row=0, column=0, sticky="nsew")
and I try to put a scrollbar to my canvas with this
photoScroll = Scrollbar(photoFrame, orient=VERTICAL)
photoScroll.config(command=photoCanvas.yview)
photoCanvas.config(yscrollcommand=photoScroll.set)
photoScroll.grid(row=0, column=1, sticky="ns")
The scrollbar appears but it's disabled. Can you help me please ?
Sorry for my bad english.
In a for loop I add lots of Image button with this code
element = Button(photoCanvas, image = listPhotos[i], borderwidth=0, height = 200, width = 200, bg="#EBEBEB")
element.grid(row=rowPhoto, column=columnPhoto, padx=5, pady=5, sticky="nsew")
Finnally I have this
root = Tk()
photoFrame = Frame(root, width=250, height=190, bg="#EBEBEB")
photoCanvas = Canvas(photoFrame, bg="#EBEBEB")
photoCanvas.grid(row=0, column=0, sticky="nsew")
for i in range(0, len(listPhotos), 1):
element = Button(photoCanvas, image = listPhotos[i], borderwidth=0, height = 200, width = 200, bg="#EBEBEB")
element.grid(row=rowPhoto, column=columnPhoto, padx=5, pady=5, sticky="nsew")
photoScroll=Scrollbar(photoFrame,orient=VERTICAL)
photoScroll.config(command=photoCanvas.yview)
photoCanvas.config(yscrollcommand=photoScroll.set)
photoScroll.grid(row=0, column=1, sticky="ns")
in my app, the purple rectangle is the next frame and I need a vertical scrollbar
Say if you have some questions
One way to scroll a group of widgets is to put them (with grid of pack) inside a frame and put this frame inside a canvas.
The two key elements (besides connecting the scrollbar to the canvas) for the scrolling to work are:
Use canvas.create_window(x, y, window=frame) to put the frame inside the canvas so that it is treated like a canvas item.
Update the canvas scrollregion each time the size of the frame changes (for instance after adding a new widget) with canvas.configure(scrollregion=canvas.bbox('all')).
Here is an adaptation of the code of the question Python Tkinter scrollbar for frame, but using the widgets name from the OP's question and grid instead of pack:
import tkinter as tk
def update_scrollregion(event):
photoCanvas.configure(scrollregion=photoCanvas.bbox("all"))
root = tk.Tk()
photoFrame = tk.Frame(root, width=250, height=190, bg="#EBEBEB")
photoFrame.grid()
photoFrame.rowconfigure(0, weight=1)
photoFrame.columnconfigure(0, weight=1)
photoCanvas = tk.Canvas(photoFrame, bg="#EBEBEB")
photoCanvas.grid(row=0, column=0, sticky="nsew")
canvasFrame = tk.Frame(photoCanvas, bg="#EBEBEB")
photoCanvas.create_window(0, 0, window=canvasFrame, anchor='nw')
for i in range(10):
element = tk.Button(canvasFrame, text='Button %i' % i, borderwidth=0, bg="#EBEBEB")
element.grid(padx=5, pady=5, sticky="nsew")
photoScroll = tk.Scrollbar(photoFrame, orient=tk.VERTICAL)
photoScroll.config(command=photoCanvas.yview)
photoCanvas.config(yscrollcommand=photoScroll.set)
photoScroll.grid(row=0, column=1, sticky="ns")
canvasFrame.bind("<Configure>", update_scrollregion)
root.mainloop()
Is there a way using Tkinter to have buttons so that they are always placed a certain number of pixels from the edge of the window, even when the window is resized? I've tried using anchors but that didn't seem to move the placement in the window that much.
You can anchor buttons or any other widget to the sides of a window by starting with a Frame, and configuring its rows and columns to have a weight of 1 in order for it to fill the parent window.
import Tkinter as tk
import ttk
root = tk.Tk()
frame = ttk.Frame(root)
frame.pack(fill=tk.BOTH, expand=True)
frame.columnconfigure(index=0, weight=1)
frame.columnconfigure(index=2, weight=1)
frame.rowconfigure(index=0, weight=1)
frame.rowconfigure(index=2, weight=1)
Then, for each button you want to use sticky to anchor it to the respective side, and use padx or pady to add some padding (in pixels) between the button and the window.
top_padding = 5
top = ttk.Button(frame, text="Top")
top.grid(row=0, column=1, sticky=tk.N, pady=(top_padding, 0))
left_padding = 5
left = ttk.Button(frame, text="Left")
left.grid(row=1, column=0, sticky=tk.W, padx=(left_padding, 0))
right_padding = 5
right = ttk.Button(frame, text="Right")
right.grid(row=1, column=2, sticky=tk.E, padx=(0, right_padding))
bottom_padding = 5
bottom = ttk.Button(frame, text="Bottom")
bottom.grid(row=2, column=1, sticky=tk.S, pady=(0, bottom_padding))
root.mainloop()
have you tried using the padx function?
it works like this:
button=Button(place,text="something something", padx=10)
it provides with extra horizontal padding between widgets, aditionally, you could use frames with padx and an anchor so the text is fixated to a position
My gui layout
looks almost nothing like what I expect
so I assume there are some basics that I don't understand.
I assumed that frames contain their own 'grid space' (row, column) but the behavior I see doesn't bear that out, and I'm at a loss for getting things working the way I want for the top frame. My labels are supposed to be on the same row L to R, under a 'frame label' that spans the entire frame - except they don't. I want the actual to look more like the goal jpg, and I want to use grid to do it.
You can just see one of the entry fields to the right of the green frame. Why is it going there ?
from Tkinter import *
root = Tk()
root.title('Model Definition')
root.resizable(width=FALSE, height=FALSE)
root.geometry('{}x{}'.format(460, 350))
top_frame = Frame(root, bg='cyan', width = 450, height=50, pady=3).grid(row=0, columnspan=3)
Label(top_frame, text = 'Model Dimensions').grid(row = 0, columnspan = 3)
Label(top_frame, text = 'Width:').grid(row = 1, column = 0)
Label(top_frame, text = 'Length:').grid(row = 1, column = 2)
entry_W = Entry(top_frame).grid(row = 1, column = 1)
entry_L = Entry(top_frame).grid(row = 1, column = 3)
#Label(top_frame, text = '').grid(row = 2, column = 2)
center = Frame(root, bg='gray2', width=50, height=40, padx=3, pady=3).grid(row=1, columnspan=3)
ctr_left = Frame(center, bg='blue', width=100, height=190).grid(column = 0, row = 1, rowspan = 2)
ctr_mid = Frame(center, bg='yellow', width=250, height=190, padx=3, pady=3).grid(column = 1, row=1, rowspan=2)
ctr_right = Frame(center, bg='green', width=100, height=190, padx=3, pady=3).grid(column = 2, row=1, rowspan=2)
btm_frame = Frame(root, bg='white', width = 450, height = 45, pady=3).grid(row = 3, columnspan = 3)
btm_frame2 = Frame(root, bg='lavender', width = 450, height = 60, pady=3).grid(row = 4, columnspan = 3)
root.mainloop()
So specifically, where did my labels and Entry widgets go, and how do I get them to look more like the goal (top frame, the rest are for later).
I assumed that frames contain their own 'grid space'
That is a correct assumption.
You can just see one of the entry fields to the right of the green
frame. Why is it going there ?
The problem starts here:
top_frame = Frame(root, ...).grid(row=0, ...)
In python, x = y().z() will always set x to the result of .z(). In the case of top_frame = Frame(...).grid(...), grid(...) always returns None so top_frame will be None. That causes every widget that you think is going into the top frame to actually go in the root window.
Solution Overview
As a general rule of thumb, you should never call grid, pack or place as part of the same statement that creates the widget. Partially it is for this exact behavior that you're experiencing, but also because I think it makes your code harder to write and harder to maintain over time.
Widget creation and widget layout are two different things. In my experience, layout problems are considerably easier to debug when you group your layout commands together.
Also, you should be consistent when using grid and always put the options in the same order so you can more easily visualize the layout. And finally, when using grid you should get in the habit of always specifying the sticky option, and always give one row and one column in each containing frame a non-zero weight.
Solution Example
Here's how I would write your code. It's much longer, but much easier to understand.
from Tkinter import *
root = Tk()
root.title('Model Definition')
root.geometry('{}x{}'.format(460, 350))
# create all of the main containers
top_frame = Frame(root, bg='cyan', width=450, height=50, pady=3)
center = Frame(root, bg='gray2', width=50, height=40, padx=3, pady=3)
btm_frame = Frame(root, bg='white', width=450, height=45, pady=3)
btm_frame2 = Frame(root, bg='lavender', width=450, height=60, pady=3)
# layout all of the main containers
root.grid_rowconfigure(1, weight=1)
root.grid_columnconfigure(0, weight=1)
top_frame.grid(row=0, sticky="ew")
center.grid(row=1, sticky="nsew")
btm_frame.grid(row=3, sticky="ew")
btm_frame2.grid(row=4, sticky="ew")
# create the widgets for the top frame
model_label = Label(top_frame, text='Model Dimensions')
width_label = Label(top_frame, text='Width:')
length_label = Label(top_frame, text='Length:')
entry_W = Entry(top_frame, background="pink")
entry_L = Entry(top_frame, background="orange")
# layout the widgets in the top frame
model_label.grid(row=0, columnspan=3)
width_label.grid(row=1, column=0)
length_label.grid(row=1, column=2)
entry_W.grid(row=1, column=1)
entry_L.grid(row=1, column=3)
# create the center widgets
center.grid_rowconfigure(0, weight=1)
center.grid_columnconfigure(1, weight=1)
ctr_left = Frame(center, bg='blue', width=100, height=190)
ctr_mid = Frame(center, bg='yellow', width=250, height=190, padx=3, pady=3)
ctr_right = Frame(center, bg='green', width=100, height=190, padx=3, pady=3)
ctr_left.grid(row=0, column=0, sticky="ns")
ctr_mid.grid(row=0, column=1, sticky="nsew")
ctr_right.grid(row=0, column=2, sticky="ns")
root.mainloop()
Result:
variable = Widget(...).grid() assigns None to variable because grid()/pack()/place() return None
use
variable = Widget(...)
variable.grid() # .pack() .place()