I have a dataset called "df_db" in which I have stored images in base64 format in a column called "Images". Now, I would like to use tkinter to scroll through the images one after the other. So far I have implemented a scrollbar and I use that value to extract a base64 string from my database which I then convert to an image and try to show in tkinter:
from tkinter import *
from PIL import ImageTk, Image
import os
def show_frame(val):
#Covert from base64
b64 = df_db["Images"][int(val)]
imgdata = base64.b64decode(b64)
#Show image
img = ImageTk.PhotoImage(Image.open(io.BytesIO(imgdata)))
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
root = Tk()
w1 = Scale(root, from_=0, to=42, orient=HORIZONTAL, command=show_frame)
w1.pack()
root.mainloop()
So far it doesn't work.
Related
I am trying to embed a base64 image into either a box or the picture widget so my application requires less files. I found a way to do it with plain tkinter at Base64 string to image in tkinter answered by Bryan Oakley and I updated the code to work with python 3.
What they did
import tkinter as tk
IMAGE_DATA = '''
R0lGODlhEAAQALMAAAAAAP//AP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAA\nAAAAACH5BAEAAAIALAAAAAAQABAAQAQ3UMgpAKC4hm13uJnWgR
TgceZJllw4pd2Xpagq0WfeYrD7\n2i5Yb+aJyVhFHAmnazE/z4tlSq0KIgA7\n
'''
root = tk.Tk()
image = tk.PhotoImage(data=IMAGE_DATA)
label = tk.Label(root, image=image, padx=20, pady=20)
label.pack()
root.mainloop()
What I've tried
import tkinter as tk
from guizero import *
import base64
app= App()
#the same image they used for testing
IMAGE_DATA = '''
R0lGODlhEAAQALMAAAAAAP//AP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAA\nAAAAACH5BAEAAAIALAAAAAAQABAAQAQ3UMgpAKC4hm13uJnWgR
TgceZJllw4pd2Xpagq0WfeYrD7\n2i5Yb+aJyVhFHAmnazE/z4tlSq0KIgA7\n
'''
box=Box(app,width=app.width,height=app.height)
box.bg='gray'
#button=PushButton(app, image=IMAGE_DATA)
#image = Picture(box, image=IMAGE_DATA)
#picText = Text(box, tk.data=IMAGE_DATA)
#Pure tkinter
'''
image = tk.PhotoImage(data=IMAGE_DATA)
label = tk.Label(box, image=image, padx=20, pady=20)
label.pack()
'''
app.display()
What I used
https://lawsie.github.io/guizero/ (module)
https://base64.guru/converter/encode/image (converts images to base 64)
The image option requires an instance of the PhotoImage class from tkinter. So, create an instance, and pass that to guizero widget.
image = tk.PhotoImage(data=IMAGE_DATA)
button=PushButton(app, image=image)
The below code displays video on the label. But, problem is that, it is displayed in a very zoom (large) manner. I want to resize it to display correctly on label. When I use the option image=image.resize(), I get an error
ValueError: cannot resize this array: it does not own its data
import tkinter as tk, threading
import imageio
from PIL import Image, ImageTk
video_name = "e.mp4"
video = imageio.get_reader(video_name)
#video = video.resize(20,20)
def stream(label):
for image in video.iter_data():
frame_image = ImageTk.PhotoImage(Image.fromarray(image))
label.config(image=frame_image)
label.image = frame_image
root = tk.Tk()
my_label = tk.Label(root, width=500,height=500)
my_label.place(x=0,y=0)
thread = threading.Thread(target=stream, args=(my_label,))
thread.daemon = 1
thread.start()
root.mainloop()
You can call resize() on the return image of Image.fromarray(image):
frame_image = ImageTk.PhotoImage(Image.fromarray(image).resize((100,100)))
I can't add image (gif image) to tkinter window.
from tkinter import *
from tkinter import filedialog
from PIL import ImageTk, Image
root = Tk()
def open_image():
qr_select = filedialog.askopenfilename(title = "open")
im = PhotoImage(file=qr_select)
w1 = Label(window, image = im)
w1.image = im
w1.config(image=im)
w1.pack(side="right")
def window_function():
global window
window=Tk()
window.geometry("800x550+650+250")
window.title("QR_Scanner")
btn = Button(window,text = "open a gif picture",command = open_image)
btn.pack()
root.iconify()
window.mainloop()
btn = Button(root,text = "open window",command = window_function)
btn.pack()
root.mainloop()
my error is (_tkinter.TclError: image "pyimage1" doesn't exist)
The reason you can't see your gif in the window is that you haven't made a reference to the image so it is collected in Tkinters garbage collector. Read More About This Here. To Add a reference to the image you can do this:
w1.image = im
And add it in your code here:
def open_image():
qr_select = filedialog.askopenfilename(title = "open")
im = PhotoImage(file=qr_select)
w1 = Label(root, image = im)
w1.image = im #Keep A Reference To The Image
w1.config(image=im)
w1.pack(side="right")
The reason you are getting pyimage1 doesn't exist is because you have more than one instance the Tk and there is only meant to be 1. You have to make your window a Toplevel() by replacing: window=Tk() with window=TopLevel()
I want to be able to display photos dynamically in Tkinter I have one button that will find the paths to the photos I want to display and as I add photos I want them to be displayed at the top of the canvas
I have already tried going through a for loop of the array after I upload the photos but that doesn't seem to do what I want, and now I am trying to iterate with a while loop but that doesn't work. I am kind of at a loss now. Below is my code
import tkinter as tk
from tkinter import filedialog as tkfd
from PIL import ImageTk, Image
import time
photo_name_list = []
def find_photos():
photo = tkfd.askopenfile()
photo_name_list.append(photo.name)
window = tk.Tk()
#creates the canvas
canvas = tk.Canvas(window, width = WINDOW_WIDTH,
height = WINDOW_HEIGHT, bg="green")
canvas.pack()
b1 = tk.Button(canvas, text="Click me to add 5 photos of yourself",
height = 5, width = 30, command = find_photos)
canvas.create_window(WINDOW_WIDTH//3, WINDOW_HEIGHT//3, window = b1)
while True:
if len(photo_name_list) > 0:
for image in photo_name_list:
img = Image.open(image)
tkimage = ImageTk.PhotoImage(img)
tk.Label(window, image=tkimage).pack()
canvas.update()
time.sleep(1/60)
window.mainloop()
So as you can see in the code I have one button that does that takes the path to an image as a string and appends it to the list. I want to display photos as they are appended.
This should work
import tkinter as tk
from tkinter import filedialog as tkfd
from PIL import ImageTk, Image
import time
WINDOW_WIDTH = 500
WINDOW_HEIGHT = 500
phat_list = []
images_reference_list = []
def find_photos():
photo = tkfd.askopenfile()
file_path = photo.name
img = Image.open(file_path)
photo_image = ImageTk.PhotoImage(img)
tk.Label(window, image=photo_image).pack(side=tk.TOP)
images_reference_list.append(photo_image)
phat_list.append(file_path)
window = tk.Tk()
#creates the canvas
canvas = tk.Canvas(window, width = WINDOW_WIDTH,
height = WINDOW_HEIGHT, bg="green")
canvas.pack(side=tk.BOTTOM)
b1 = tk.Button(canvas, text="Click me to add 5 photos of yourself",
height = 5, width = 30, command = find_photos)
canvas.create_window(WINDOW_WIDTH//3, WINDOW_HEIGHT//3, window = b1)
window.mainloop()
I've added the code lines that display the photo inside the function find_photos().
The while statement was causing some troubles i assume, you have always to check if the while will ever end for have a working code
and if you want to display an image you have always to keep a solid reference of it , the best way is to add it into a list
I want to show PNG picture on canvas.
Before it I need to resize it and change transparency.
I found that I can load image and change alpha channel with PhotoImage like this:
image1 = PIL.Image.open('aqua.png')
image1.putalpha(128)
gif1 = ImageTk.PhotoImage(image1)
Also I can load PhotoImage and resize it like this:
gif1 = PhotoImage(file = 'aqua.png')
gif1 = gif1.subsample(5)
But I can't perform both this things on same PhotoImage
I understand that PhotoImage and ImageTk.PhotoImage are different classes in my code.
>> print (ImageTk.PhotoImage)
<class 'PIL.ImageTk.PhotoImage'>
>> print (PhotoImage)
<class 'tkinter.PhotoImage'>
I tried to found functionality that I need in both classes but without success.
Maybe I need perform subsample and than convert my tkinter.PhotoImage to PIL.ImageTk.PhotoImage and then perform putalpha but it sounds weird.
Please refer me to right direction about png cooking in Python.
Here is all my code:
from tkinter import *
import PIL
from PIL import Image, ImageTk
canvas = Canvas(width = 200, height = 200)
canvas.pack(expand = YES, fill = BOTH)
image1 = PIL.Image.open('aqua.png')
image1.putalpha(128)
gif1 = ImageTk.PhotoImage(image1)
# gif1 = PhotoImage(file = 'aqua.png')
# next line will not work in my case
gif1 = gif1.subsample(5)
canvas.create_image(0, 0, image = gif1, anchor = NW)
mainloop()
You can use the resize method included in the Image class. Here is the modified code:
from tkinter import *
from PIL import Image, ImageTk
canvas = Canvas(width = 200, height = 200)
canvas.pack(expand = YES, fill = BOTH)
image1 = Image.open('aqua.png')
image1.putalpha(128)
image1 = image1.resize((image1.width//5,image1.height//5))
gif1 = ImageTk.PhotoImage(image1)
canvas.create_image(0, 0, image = gif1, anchor = NW)
mainloop()