Tkinter frame expand is only displaying half my window - python

I'm trying to create a phone in tkinter and i'm using frames but the image is being cut in half. Does anyone know why?
https://i.stack.imgur.com/mOtEn.png
import tkinter as tk
def raiseframe(frame):
frame.tkraise()
root = tk.Tk()
bgImage = tk.PhotoImage(file="Phone.gif")
WALogo = tk.PhotoImage(file="whatsappLogo.gif")
width = bgImage.width()
height = bgImage.height()
root.title("Phone")
root.geometry("%dx%d+0+0" % (width, height))
main = tk.Frame()
whatsapp = tk.Frame()
for frame in (main, whatsapp):
frame.pack(fill = tk.BOTH, expand = True)
#Mainscreen:
canvas = tk.Canvas(main, width = width, height = height, bg = "black")
canvas.create_image((width / 2, height / 2), image = bgImage)
canvas.place(x = 0, y = 0)
WAB = tk.Button(main, image = WALogo, command = lambda: raiseframe(whatsapp))
WAB.place(x = 35, y = 85)
raiseframe(main)
root.mainloop()

I believe you have added the picture into a frame which only takes up up to half of the screen.
You could either:
change the dimensions of the frame
add the picture to root like this:
canvas = tk.Canvas(root, width = width, height = height, bg = "black")
canvas.create_image((width / 2, height / 2), image = bgImage)

Related

tkinter strange phenomenon with buttons and images

I don't know what to say because I am clueless on why this is not working.
The first button appears but the image does not the second and third button does not appear.
from tkinter import *
Master = Tk()
Master.geometry("1408x768")
Master.configure(background = "#000000")
# Top
Top = Frame(Master)
Top.configure(background = "#1C1C1C", width = 1024.0, height = 384.0)
Top.place(x = 0.0, y = -5.684341886080802e-14)
Nextimg = PhotoImage(file = "Next.png")
Next = Button(master = Top, background = "#0084FF", image = Nextimg)
Next.place(x = 624.0, y = 551.0, width = 100, height = 50)
# Bottom
Bottom = Frame(Master)
Bottom.configure(background = "#8C8C8C", width = 1024.0, height = 384.0)
Bottom.place(x = 0.0, y = 384.0)
Nextimg = PhotoImage(file = "Next.png")
Next = Button(master = Bottom, background = "#0084FF", image = Nextimg)
Next.place(x = 624.0, y = 551.0, width = 100, height = 50)
# Dashboard
Dashboard = Frame(Master)
Dashboard.configure(background = "#252525", width = 384.0, height = 768.0)
Dashboard.place(x = 1024.0, y = 0.0)
Continueimg = PhotoImage(file = "Continue.png")
Continue = Button(master = Dashboard, background = "#FF8900", image = Continueimg)
Continue.place(x = 1091.0, y = 359.0, width = 250, height = 50)
Your primary issue here appears that you are expecting your widget placement to be relative to the root window but in fact they are relative to the frames they are placed in.
Try this. Change all your buttons X/Y to 20 and see what I mean.
You will see all the buttons show up in the top left corner of each frame they are assigned to.
One issue is that you are using place to manage widgets and this is very bad for code maintenance. It is much better to use grid() and/or pack() to build your windows for several reasons.
Automatic weights to adjust placement based on window size and easy of maintainability as your code grows.
The issue you will see with your 1st and 2nd buttons is the 1st button does not show the image due to the reference being reassigned.
If you want to use the same image for both just save a reference once.
In this case you can remove the 2nd Nextimg = from your code.
See what happens when we change the placement to 20's
from tkinter import *
Master = Tk()
Master.geometry("1408x768")
Master.configure(background = "#000000")
Top = Frame(Master)
Top.configure(background = "#1C1C1C", width = 1024.0, height = 384.0)
Top.place(x = 0.0, y = -5.684341886080802e-14)
Nextimg = PhotoImage(file = "Next.png")
Next = Button(master = Top, background = "#0084FF", image = Nextimg)
Next.place(x = 20, y = 20, width = 100, height = 50)
Bottom = Frame(Master)
Bottom.configure(background = "#8C8C8C", width = 1024.0, height = 384.0)
Bottom.place(x = 0.0, y = 384.0)
# Nextimg = PhotoImage(file = "Next.png") Removed this as it is why your image does not show up on the first button.
Next = Button(master = Bottom, background = "#0084FF", image = Nextimg)
Next.place(x = 20, y = 20, width = 100, height = 50)
Dashboard = Frame(Master)
Dashboard.configure(background = "#252525", width = 384.0, height = 768.0)
Dashboard.place(x = 1024.0, y = 0.0)
Continueimg = PhotoImage(file = "Continue.png")
Continue = Button(master = Dashboard, background = "#FF8900", image = Continueimg)
Continue.place(x = 20, y = 20, width = 250, height = 50)
Master.mainloop()
Note that I replaced your images with grey squares since I did not have your image to use.
Results:
A more conventional way to write this would be to use grid() or pack().
Also I have rewritten the code to more closely fit PEP* standards.
See below example:
import tkinter as tk
master = tk.Tk()
master.geometry("1408x768")
master.configure(background="#000000")
top = tk.Frame(master)
top.grid_propagate(False)
top.configure(background="#1C1C1C", width=1024.0, height=384.0)
top.grid(row=0, column=0)
nextimg = tk.PhotoImage(file="gray.png")
tk.Button(master=top, background="#0084FF", image=nextimg).grid(row=0, column=0)
bottom = tk.Frame(master)
bottom.grid_propagate(False)
bottom.configure(background="#8C8C8C", width=1024.0, height=384.0)
bottom.grid(row=1, column=0)
tk.Button(master=bottom, background="#0084FF", image=nextimg).grid(row=0, column=0)
dashboard = tk.Frame(master)
dashboard.grid_propagate(False)
dashboard.configure(background = "#252525", width = 384.0, height = 768.0)
dashboard.grid(row=0, column=1, rowspan=2)
continueimg = tk.PhotoImage(file="gray.png")
tk.Button(master=dashboard, background="#FF8900", image=continueimg).grid(row=0, column=0)
master.mainloop()
Results:
You can also manage spacing of the widgets from the edges if you like. That can be done by providing a padx/pady parameter to the grid().

Can't properly set an image as canvas background in tkinter

I want my Tkinter window to have four buttons, each with its own background image, disposed as a 2x2 grid. I tried using frames but you can't set an image as frame background so I had to switch to Canvas. This is the code for one of the four blocks.
from tkinter import *
from PIL import ImageTk, Image
root = Tk()
root.geometry("500x200")
root.wm_title("KnowYourArt")
styles_bg = ImageTk.PhotoImage(Image.open("images/styles_bg.png"))
canvas_styles = Canvas(root)
bg = canvas_styles.create_image(100, 100, image=styles_bg)
width = 4
height = 2
Button(canvas_styles, text="Styles", width=width, height=height).pack(side=TOP)
Label(canvas_styles, text="Gain info about styles").pack(side=BOTTOM)
canvas_styles.grid(row=0, column=0)
This is the output I get:
In my intentions, the background image dimensions should cover both the button and the label, and the image's dimensions should be independent from the dimensions of the widgets. Instead, I obtain a canvas where the height of the BG image is the same as the height of the button, and the width is the same as the label's width. I tried many alternative possibilities, including setting a width and height for the canvas, and none of them properly worked. What am I doing wrong?
I managed to find a solution. Here is the code:
from tkinter import *
from PIL import ImageTk, Image
width = 4
height = 1
def add_canvas(frame, img, x, y, text):
c = Canvas(frame, width=300, height=300)
c.focus()
c.pack(fill=BOTH, expand=True)
bg = c.create_image(x, y, image=img)
btn = Button(frame, text="Go!", width=width, height=height)
c.create_text(150, 190, text=text, font=('Helvetica', 15), fill='white')
c.create_window(100, 200, anchor="nw", window=btn)
return c
root = Tk()
root.geometry("600x600")
root.wm_title("Title")
f_1 = Frame(root)
f_2 = Frame(root)
f_3 = Frame(root)
f_4 = Frame(root)
bg1 = ImageTk.PhotoImage(Image.open("images/im1.png"))
bg2 = ImageTk.PhotoImage(Image.open("images/im2.png"))
bg3 = ImageTk.PhotoImage(Image.open("images/im3.png"))
bg4 = ImageTk.PhotoImage(Image.open("images/im4.jpg"))
canvas_1 = add_canvas(f_1, bg1, 0, 0, "foo")
canvas_2 = add_canvas(f_2, bg2, 240, 240, "foo")
canvas_3 = add_canvas(f_3, bg3, 120, 120, "foo")
canvas_4 = add_canvas(f_4, bg4, 100, 100, "foo")
f_1.grid(row=0, column=0)
f_2.grid(row=0, column=1)
f_3.grid(row=1, column=0)
f_4.grid(row=1, column=1)
And here's the output

Can you rescale a PhotoImage in Python Tkinter?

In my program, I have two buttons. button1 calls a function (bt1) which displays an image in the window and then deletes both buttons. button2 calls a function(bt2) I would like this button to display the same image as button1 but by half the scale factor. I am thinking something like this:
scale_half_img = PhotoImage(file = 'Image.png', scale = 0.5)
Of course, this doesn't work but this is the sort of thing I am looking for.
Full code:
from tkinter import *
window = Tk()
def bt1():
img = PhotoImage(file = 'Image.png')
imglbl = Label(window, image = img, anchor = 'nw')
imglbl.place(x = 0, y = 0, width = 865, height = 800)
button1.destroy()
button2.destroy()
def bt2():
# display scaled down image
button1.destroy()
button2.destroy()
button1 = Button(window, text = 'Display Image', command = bt1)
button1.place(x = 10, y = 10, width = 200, height = 30)
button2 = Button (window, text = 'Display Rescaled Image', command = bt2)
button2.place(x = 10, y = 50, width = 200, height = 30)
window.mainloop()
Use PIL.Image to resize an image in tkinter. You can do it as follows:
from PIL import Image, ImageTk
img = Image.open('<Path to Image>')
img = img.resize((img.size[0]/2, img.size[1]/2), Image.ANTIALIAS)
resized_image = ImageTk.Photoimage(img) # use this

PhotoImage is not responding to tkinter Scale widget

I have a python script which allows a user to open up an image in a tkinter canvas widget. The program is printing out the size that the new image should be, but only the original image shows up. How do I refresh the canvas with the new size.
Here is the python code:
from Tkinter import *
import tkFileDialog
from PIL import ImageTk, Image
factor = 1.0
width_org = 500
height_org = 500
mGui = Tk()
mGui.geometry("600x600")
mGui.configure(background = 'yellow')
frame = Frame(mGui, width = 400, height = 400)
frame.pack(anchor = 'nw')
frame.configure(background = 'red')
canvasframe = Canvas(frame, width = 400, height = 400, scrollregion = (-500,-500,500,500))
hbar = Scrollbar(frame,orient=HORIZONTAL)
hbar.pack(side=BOTTOM, fill = X)
hbar.configure(command= canvasframe.xview)
vbar = Scrollbar(frame,orient = VERTICAL )
vbar.pack(side=RIGHT, fill = Y)
vbar.configure(command= canvasframe.yview)
canvasframe.configure(xscrollcommand= hbar.set, yscrollcommand= vbar.set)
canvasframe.pack( expand = True, fill = BOTH)
pil_img = Image.open("rose-flower-500x500.jpg")
img = ImageTk.PhotoImage(pil_img)
def openit():
in_path = tkFileDialog.askopenfilename()
try:
pil_img = Image.open(in_path)
except IOError:
pass
width_org, height_org = pil_img.size
try:
img = ImageTk.PhotoImage(pil_img)
except IOError:
pass
canvasframe.create_image(20,20, image = img)
canvasframe.img = img
valueList = [25, 50, 100, 150, 200]
def valuecheck(value):
newval = min(valueList, key=lambda x:abs(x-float(value)))
scalepic.set(newval)
factor = newval/100.0
w = int(width_org*factor)
h = int(height_org*factor)
print (w, h)
pil_img = pil_img.resize((w,h),Image.ANTIALIAS)
img = ImageTk.PhotoImage(pil_img)
canvasframe.create_image(20,20, image =img)
openpic = Button(mGui, text = "Open", command = openit).pack()
scalelabel = Label(mGui, text = "Resize Image").pack()
scalepic = Scale(mGui, from_=min(valueList), to=max(valueList), command=valuecheck, orient = HORIZONTAL)
scalepic.set(100)
scalepic.pack()
mGui.mainloop()
Also, how can I open a new image? I'm thinking of a for loop and some kind of dispose method, but I'm not sure about the syntax.
EDIT
Part of code in classes
from Tkinter import *
import tkFileDialog
from PIL import ImageTk, Image
factor = 1.0
width_org = 500
height_org = 500
class MainApp(Frame):
def createControls(self):
frame = Frame(self, width = 600, height = 500)
frame.configure(background = 'red')
frame.pack(anchor = 'nw')
canvasframe = Canvas(frame, width = 600, height = 500, scrollregion = (-600,-500,600,500))
canvasframe.configure(xscrollcommand= hbar.set, yscrollcommand= vbar.set)
canvasframe.pack(expand = True, fill = BOTH)
hbar = Scrollbar(frame, orient=HORIZONTAL)
hbar.pack(side=BOTTOM, fill=X)
hbar.configure(command= canvasframe.xview)
vbar = Scrollbar(frame, orient=VERTICAL)
vbar.pack(side=RIGHT, fill = Y)
vbar.configure(command= canvasframe.yview)
def __init__(self, parent):
Frame.__init__(self, parent, width = 800, height = 600, background = 'yellow')
self.pack()
self.createControls()
root = Tk()
app = MainApp(parent =root)
app.mainloop()
You forgot to save the reference to the new PhotoImage in canvasframe.img, so it gets garbage collected when valuecheck returns.
Also, rather than creating a new Canvas image with create_image for the rescaled image you should simply update the existing one via itemconfig. To do that, you need to save the item id number returned by create_image. Eg, in openit, do
canvasframe.imgid = canvasframe.create_image(20,20, image = img)
And then in valuecheck, after you create the new PhotoImage do
canvasframe.img = img
canvasframe.itemconfig(canvasframe.imgid, image=img)
You don't have to store img and imgid as attributes of canvasframe, but it's convenient in this case. It would get messy though if you had lots of things on the canvas that you had to track. But for larger Tkinter programs it's a good idea to put everything into one or more classes. It makes things more organized, and easier to access.

How to insert a picture into the splash screen?

I just want to know how could I insert a picture into the splash screen?
from tkinter import *
#splash screen
class SplashScreen(Frame):
def __init__(self, master=None, width=0.8, height=0.6, useFactor=True):
Frame.__init__(self, master)
self.pack(side=TOP, fill=BOTH, expand=YES)
# get screen width and height
ws = self.master.winfo_screenwidth()
hs = self.master.winfo_screenheight()
w = (useFactor and ws * width) or width
h = (useFactor and ws * height) or height
# calculate position x, y
x = (ws / 2) - (w / 2)
y = (hs / 2) - (h / 2)
self.master.geometry('%dx%d+%d+%d' % (w, h, x, y))
self.master.overrideredirect(True)
self.lift()
if __name__ == '__main__':
root = Tk()
sp = SplashScreen(root)
sp.config(bg="#3632ff")
m = Label(sp, text="MH60 NAVIGATION APP")
m.pack(side=TOP, expand=YES)
m.config(bg="#3366ff", justify=CENTER, font=("calibri", 29))
Button(sp, text="PRESS TO START", bg='red', command=root.destroy).pack(side=BOTTOM, fill=X)
root.mainloop()
Just add some widget with an image to your SplashScreen instance. For example, say your splash screen image was this .gif:
Then adding it to your code would look something like this (via a Button widget):
from tkinter import *
class SplashScreen(Frame):
def __init__(self, master=None, width=0.8, height=0.6, useFactor=True):
Frame.__init__(self, master)
self.pack(side=TOP, fill=BOTH, expand=YES)
# Add widget with the splash screen image on it.
self.img = PhotoImage(file='splash.gif')
btn = Button(self, image=self.img)
btn.pack(expand=YES, ipadx=10, ipady=10)
# get screen width and height
ws = self.master.winfo_screenwidth()
hs = self.master.winfo_screenheight()
w = (useFactor and ws * width) or width
h = (useFactor and ws * height) or height
# calculate position x, y
x = (ws / 2) - (w / 2)
y = (hs / 2) - (h / 2)
self.master.geometry('%dx%d+%d+%d' % (w, h, x, y))
self.master.overrideredirect(True)
self.lift()
if __name__ == '__main__':
root = Tk()
sp = SplashScreen(root)
sp.config(bg="#3632ff")
m = Label(sp, text="MH60 NAVIGATION APP")
m.pack(side=TOP, expand=YES)
m.config(bg="#3366ff", justify=CENTER, font=("calibri", 29))
Button(sp, text="PRESS TO START", bg='red', command=root.destroy).pack(side=BOTTOM, fill=X)
root.mainloop()
This is how it looks running on my system:
Step 1:- Import Module.
Step 2:- Create splash screen.
step 3:- Set title and geometry for splash screen.
step 4:- Insert photo file name to be display.
step 5:- Create Label and Pack the Label.
# Import Module
from tkinter import *
splash = Tk()
splash.title("Welcome") # assigning title for splash screen
splash.geometry("800x750+300+100") # set geometry for splash screen
splash.after(4000, splash.destroy) # splash screen will destroy after 4 sec
bg = PhotoImage(file = "file_name.png") # insert file name to be display
lab = Label(splash, image = bg) # create label
lab.pack() # pack the label
splash.mainloop()
bg = PhotoImage(file = "file_name.png") # insert file name to be display
file_name(photo) should be present(save) in folder where above code is saved.
If file_name is not given in code or the image does not exist in folder where above code is saved then the error will appear while running code.
Error:-
_tkinter.TclError: couldn't open "file_name.png": no such file or directory
Probably you are trying to use jpg or other type of file, like jpeg..., check this or change the type of file to png.

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