I've created a Tkinter app to convert the mailing lists we use at my company. All the functionality seems to work fine I just can't get the logo image to work!
I have created an app without using a Class and it is exactly how I'd want it.
The way I'd want the app to look:
However, I can only get the converter to work with this version using a Class:
Current working version:
The code for the working version is below (the one without any logo), I've excluded all the excel conversion code as it's quite long.
import tkinter as tk
class Window(tk.Frame):
def __init__(self, master=None):
tk.Frame.__init__(self, master)
self.master = master
self.init_window()
def init_window(self):
self.master.title("SPB Mailing List Cleaner")
self.pack(fill='both', expand=1)
self.filepath = tk.StringVar()
convertButton = tk.Button(self, text='Convert',
command=self.convert, bg="#00a69d", fg="white", height="2", width="15")
convertButton.place(x=242, y=200)
filepathText = tk.Entry(self, textvariable=self.filepath)
filepathText.pack()
filepathText.place(x=237, y=250)
def convert(self):
pass # left out code
def show_file_browser(self):
self.filename = filedialog.askopenfilename()
return self.filename
def first_browser(self):
file = self.show_file_browser()
self.filepath.set(file)
form = tk.Tk()
form.geometry("600x300")
form.resizable(0, 0)
app = Window(form)
form.mainloop()
This is the code for the image in the first screenshot (the one with the logo) ('The way I'd want the app to look').
import tkinter as tk
from PIL import Image, ImageTk
from tkinter.filedialog import askopenfile
from tkinter import filedialog as fd
import os
root = tk.Tk()
canvas = tk.Canvas(root, width = 600, height = 300)
canvas.grid(columnspan=3, rowspan=3)
#logo
logo = Image.open('logo.png')
logo = ImageTk.PhotoImage(logo)
logo_label = tk.Label(image = logo)
logo_label.image = logo
logo_label.grid(column=1, row=0)
#instructions
instructions = tk.Label(root, text="Select an appropriate '.xlsx' file for cleaning.")
instructions.grid(columnspan=3, column=0, row=1)
def open_file():
browse_text.set("loading...")
file = askopenfile(initialdir=os.path.normpath("C://"), parent=root, mode='rb', title="Choose a file", filetypes=[("Excel files", ".xlsx .xls")])
if file:
print(file.name)
#browse button
browse_text = tk.StringVar()
browse_btn = tk.Button(root, textvariable=browse_text, command=lambda:open_file(), bg="#00a69d", fg="white", height="2", width="15")
browse_text.set("Select File")
browse_btn.grid(column=1, row=2)
canvas = tk.Canvas(root, width = 600, height = 150)
canvas.grid(columnspan=3)
root.mainloop()
The question is how do I get the logo to work with the version that doesn't have a logo, i.e make the image work within a class.
I would really appreciate any feedback/help on this. I had a look at some posts that describe a similar issue but I'm quite new to coding so can't wrap my head around it all.
Things you have to do:
load the image in class.
Currently Tkinter only supports , the GIF, PGM, PPM, and PNG file formats as of Tkinter 8.6
To support other file formats such as PNG,JPG, JPEG, or BMP, you can use an image library such as Pillow to convert them into the supported format.
image = Image.open('./assets/python.jpg')
python_image = ImageTk.PhotoImage(image)
self.label=Label(image=python_image)
The another solution is to use to make the image variable a class variable by adding self. so final thing would look like self.img_var_name=image.
Alternatively you can append the images in a list, or use
image = image)
The goals is to increase the refrence count of image variable.
See Why does Tkinter image not show up if created in a function? for more details.
I just had to put the image code inside the init_window function.
def init_window(self):
#logo
logo = Image.open('logo.png')
logo = ImageTk.PhotoImage(logo)
logo_label = tk.Label(image = logo)
logo_label.image = logo
logo_label.place(x=160, y=20)
#instructions
instructions = tk.Label(form, text="Select an appropriate '.xlsx' file for cleaning.")
instructions.place(x=180, y=280)
self.master.title("SPB Mailing List Cleaner")
self.pack(fill = 'both', expand = 1)
self.filepath = tk.StringVar()
convertButton = tk.Button(self, text = 'Convert',
command = self.convert, bg="#00a69d", fg="white", height="2", width="15")
convertButton.place(x = 242, y = 200)
Related
This question already has answers here:
Why does Tkinter image not show up if created in a function?
(5 answers)
Closed 2 years ago.
I am trying to make this UI from a stimulus as part of an assessment for school. I tried to import the provided school logo and banner on the top frame of the page and put images on the canvas but have yet to achieve any results. When I run the code, the pictures won't load at all. The code that I was working with is as followed:
from tkinter import *
import random
import time
import sqlite3
from tkinter import simpledialog
from tkinter import messagebox
from tkcalendar import *
from tkinter import ttk
import math
from PIL import Image, ImageTk
import winsound
#-------------Frames setup--------------------------
class VendingApp(Tk):
def __init__(self):
Tk.__init__(self)
self._frame = None
self.switch_frame(Home)
def switch_frame(self, frame_class):
#Destroys current frame and replaces it with a new one.
new_frame = frame_class(self)
if self._frame is not None:
self._frame.destroy()
self._frame = new_frame
self._frame.pack()
####-----------------------Home page---------------------------
class Home(Frame):
def __init__(self, master):
Frame.__init__(self, master)
topFrame = Frame(self,width = 1024, height = 100, bd = 2, bg = "black")
topFrame.pack()
canvas_for_logo = Canvas(topFrame, height=100, width=100, bg = 'green') ##logo image
canvas_for_logo.grid(row=0, column=0, sticky='ne')
img_logo = Image.open("pic/sitelogo.png")
img_logo = img_logo.resize((40,40), Image.ANTIALIAS)
logo = ImageTk.PhotoImage(img_logo)
canvas_for_logo.create_image(0, 0, anchor=NW, image=logo)
canvas_for_banner = Canvas(topFrame, bg='red', height=100, width=924) #banner image
canvas_for_banner.grid(row=0, column=1, sticky='nw')
img_banner = Image.open("pic/banner.jpg")
img_banner = img_banner.resize((40,40), Image.ANTIALIAS)
banner = ImageTk.PhotoImage(img_banner)
canvas_for_banner.create_image(0, 0, anchor=NW, image=banner)
MidFrame = Frame(self,width = 1024, height = 628, bd = 2)
MidFrame.pack()
MidFrame.grid_propagate(False)
BottomFrame = Frame(self,width = 1024, height = 50, bd = 2, bg = "black")
BottomFrame.pack()
BottomFrame.grid_propagate(False)
if __name__ == "__main__":
root = VendingApp()
#Sets the size of the window
root.geometry("1024x768")
#Renames the TITLE of the window
root.title("Vending machine")
root.geometry("1024x768")
root.resizable(False, False)
root.mainloop()
I decided to make a separate file to test if the image would load without class, and it did. Codes are as followed:
from tkinter import ttk
from tkinter import*
import time
from PIL import Image, ImageTk
root = Tk()
canvas_for_logo = Canvas(root, height=100, width=100)
canvas_for_logo.pack()
img = Image.open("pic/sitelogo.png")
img = img.resize((105,105), Image.ANTIALIAS)
logo = ImageTk.PhotoImage(img)
canvas_for_logo.create_image(0, 0, anchor=NW, image=logo)
canvas_for_banner = Canvas(root, bg='red', height=100, width=924) #banner image
canvas_for_banner.pack()
img_banner = Image.open("pic/banner.jpg")
img_banner = img_banner.resize((924,100), Image.ANTIALIAS)
banner = ImageTk.PhotoImage(img_banner)
canvas_for_banner.create_image(0, 0, anchor=NW, image=banner)
root.mainloop()
Can someone please tell me what I did wrong? All replies are much appreciated. Thank you.
This is a typical Tkinter bug. I don't want to go into details cause I don't fully understand why it happens either, but it has something to do with the garbage collector and the fact that it doesn't consider the objects you have created for storing those images like being in use, so it deletes them; or something like that.
Luckily, it has an easy solution: you can either create an internal list variable, let say, self._images that stores each image you are using, something like:
self._images = list()
(...)
self._images.append(logo)
(...)
self._images.append(banner)
Or, you could assign to each canvas instance an attribute image (or img, it doesn't really matters) that stores the image instance it is going to carry. In your code, it will look similar to:
canvas_for_logo.image = logo
(...)
canvas_for_banner.image = banner
This way, you can avoid the garbage collector deleting what it shouldn't, cause now it acknowledges that this instances are being in use.
I am making a program where I need to at some point display an image onto a frame at the press of a button. I am using an object oriented approach but it won't display the image. If I do something like:
from tkinter import *
from PIL import Image, ImageTk
root = Tk()
pic = Image.open("image.jpg")
tkpic = ImageTk.PhotoImage(pic)
label = Label(root, image=tkpic)
label.pack()
root.mainloop()
that works fine. But if I create a frame and try to display the picture like this:
from tkinter import *
from PIL import Image, ImageTk
class picframe(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
button = Button(self, text="show", command=self.showpic)
button.pack()
def showpic(self):
pic = Image.open("image.jpg")
tkpic = ImageTk.PhotoImage(pic)
label = Label(self, image=tkpic)
label.pack()
root = Tk()
frame = picframe(root)
frame.pack()
root.mainloop()
When I press the button it expands the window as if it was trying to display the image but nothing shows up it just becomes a wider window. So what am I doing wrong?
Thank you in advance!
As the picture is created in a function the reference tkpic will be garbage collected when the function exits. You need to save a reference to the image:
def showpic(self):
pic = Image.open("image.jpg")
tkpic = ImageTk.PhotoImage(pic)
label = Label(self, image=tkpic)
label.image = tkpic # Save reference to image
label.pack()
Alternatively you can ensure the persistance of the image reference by making it an instance variable:
def showpic(self):
pic = Image.open("images/beer.png")
self.tkpic = ImageTk.PhotoImage(pic)
label = Label(self, image=self.tkpic)
label.pack()
This question already has answers here:
Why does Tkinter image not show up if created in a function?
(5 answers)
Closed 5 years ago.
I have the following code:
from tkinter import *
import os
from PIL import ImageTk, Image
#Python3 version of PIL is Pillow
class Scope:
def __init__(self, master):
self.master = master
f = Frame(root)
self.greet_button = Button(f, text="Back", command=self.back)
self.greet_button.pack(side= LEFT)
self.greet_button = Button(f, text="Detect", command=self.detect)
self.greet_button.pack(side= LEFT)
self.close_button = Button(f, text="Continue", command=master.quit)
self.close_button.pack(side=LEFT)
photo = PhotoImage(file='demo.gif')
cv = Label(master, image=photo)
cv.pack(side= BOTTOM)
f.pack()
def greet(self):
print("Previous image...")
root = Tk()
my_gui = Scope(root)
root.mainloop()
My first problem is that when I run this, all the buttons and the window show up, but there is no image. There is a square place holder indicating that the image should be in that box, but no image actually shows. I'm able to display the image if I just type the following:
root = Tk()
photo = PhotoImage(file='demo.gif')
label = Label(root, image=photo)
label.pack()
root.mainloop()
So, I know it's possible. But I don't know what I'm doing wrong with my GUI code. I've tried debugging this quite a bit and nothing seemed to work.
A second problem is, I am completely unable to display a jpg file in a GUI. I've tried using every tutorial and nothing quite does the trick. Ideally, I'd like to just be able to display a jpg image, if that's not possible, I'll settle for displaying a gif.
Your reference to photo gets destroyed / carbage collected by Python after the class is called, so, there is nothing the label could show.
In order to avoid this, you have to maintain a steady reference to it, i.e. by naming it self.photo:
from tkinter import *
import os
from PIL import ImageTk, Image
#Python3 version of PIL is Pillow
class Scope:
def __init__(self, master):
self.master = master
f = Frame(root)
self.greet_button = Button(f, text="Back") #, command=self.back)
self.greet_button.pack(side=LEFT)
self.greet_button = Button(f, text="Detect") #, command=self.detect)
self.greet_button.pack(side=LEFT)
self.close_button = Button(f, text="Continue", command=master.quit)
self.close_button.pack(side=LEFT)
self.photo = PhotoImage(file='demo.gif')
cv = Label(master, image=self.photo)
cv.pack(side=BOTTOM)
f.pack()
def greet(self):
print("Previous image...")
root = Tk()
my_gui = Scope(root)
root.mainloop()
PS: Your code snippet was not running properly because two functions were missing.
I'm trying to get an image to display in a Tkinter Label widget. This code works inside a class in PyCharm, but doesn't get past the 'tk.Label' line in the main app. I've consulted other answers here but haven't been able to figure out why the image isn't displaying in the main app.
logo_filepath = "/Users/xxx/MASTER/pymol/Master/cache/logos/tmpbhWv2Ts.gif"
self.img = tk.PhotoImage(file = logo_filepath)
self.logo = tk.Label(self, image=self.img)
self.logo.photo = self.img
self.logo.grid(row=0, column=3, rowspan=10, columnspan=4)
It's a very simple error. Just make sure that you aren't defining self.[Your Variable] outside of a class. Because self is only available in classes. Also, Here's my code:
import Tkinter as tk
root = tk.Tk()
logo_filepath = "Your File Path..."
img = tk.PhotoImage(file = logo_filepath)
logo = tk.Label(root, image=img)
logo.photo = img
logo.grid(row=0, column=3, rowspan=10, columnspan=4)
tk.mainloop()
I am trying to place two image buttons on my image background in a certain position, but my buttons are not appearing. I think their images are behind the background.
I tried to use place and pack, both did not work. What could be the problem?
from tkinter import*
import tkinter as tk
import settings
class Application(Frame):
def __init__ (self, master):
Frame.__init__(self,master)
self.grid()
self.create_widgets()
def create_widgets(self):
button1 = PhotoImage(file ="button1.gif")
button2 = PhotoImage(file ="button2.gif")
settings_button = Button(self, image = button1,
command = self.mult_command, width = 15)
settings_button.place(x=1, y=1)
rules_button = Button(self, image = button2,
command = self.the_rules, width = 15)
rules_button.place(x=50, y=50)
def main_code():
window = Tk()
window.title("The Bouncer")
bg_image = PhotoImage(file ="pic.gif")
x = Label (image = bg_image)
x.image = bg_image
x.place(x = 0, y = 0, relwidth=1, relheight=1)
window.geometry("600x300")
app = Application(window)
window.mainloop()
main_code()
thanks
It is likely that your image is being garbage collected before it is displayed. This is a common Tkinter gotcha. Try changing the lines:
button1 = PhotoImage(file ="button1.gif")
button2 = PhotoImage(file ="button2.gif")
to
self.button1 = PhotoImage(file ="button1.gif")
self.button2 = PhotoImage(file ="button2.gif")
and use
settings_button = Button(self, image = self.button1, command = self.mult_command, width = 15)
etc.
This should keep a reference to your image, stopping it from getting garbage collected.
In addition to keeping a reference to the image, you have a problem with this line:
self.grid()
in the __init__ method of Application. It's gridding the Frame into the window, but since nothing is ever packed or gridded into the frame, it doesn't ever expand past a little, tiny frame, so you just don't see the Buttons inside it. A simple fix here would be the pack method, with arguments to fill the window and expand when needed:
self.pack(fill=BOTH, expand=1)