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[Snippets] Added tkinter snippet #240

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Merged
technoph1le merged 4 commits into quicksnip-dev:main from legopitstop:main
Feb 24, 2025
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49 changes: 49 additions & 0 deletions snippets/python/[tkinter]/basics/display-a-pillow-image.md
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Original file line number Diff line number Diff line change
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---
title: Display a Pillow Image
description: Use Pillow to show an image in a Tkinter window.
author: Legopitstop
tags: app,hello-world,object-oriented
---

```py
from tkinter import Tk, Label
from PIL import Image, ImageDraw, ImageTk


class App(Tk):
def __init__(self):
Tk.__init__(self)
self.geometry("200x200")

# PhotoImage must be global or be assigned to a class or it will be garbage collected.
self.photo = ImageTk.PhotoImage(self.make_image())
lbl = Label(self, image=self.photo)
lbl.pack(expand=1)

def make_image(self):
width, height = 200, 200
image = Image.new("RGB", (width, height), "white")

# Create a drawing context
draw = ImageDraw.Draw(image)

# Draw a circle
radius = 80
center = (width // 2, height // 2)
draw.ellipse(
[
(center[0] - radius, center[1] - radius),
(center[0] + radius, center[1] + radius),
],
fill="red",
outline="black",
width=3,
)
return image


# Usage:
root = App()
root.mainloop()

```
22 changes: 22 additions & 0 deletions snippets/python/[tkinter]/basics/hello-world.md
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---
title: Hello, World!
description: Creates a basic Tkinter window with a "Hello, World!" label.
author: Legopitstop
tags: app,hello-world,object-oriented
---

```py
from tkinter import Tk, Label

class App(Tk):
def __init__(self):
Tk.__init__(self)
self.geometry("200x200")

self.lbl = Label(self, text='Hello, World!')
self.lbl.pack(expand=1)

# Usage:
root = App()
root.mainloop()
```
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---
title: Allow Alphanumeric
description: A validation function to allow alphanumeric characters.
author: Legopitstop
tags: validation,alphanumeric
---

```py
from tkinter import Tk, Entry


def allow_alphanumeric(value):
return value.isalnum() or value == ""


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_alphanumeric)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
32 changes: 32 additions & 0 deletions snippets/python/[tkinter]/entry-validation/allow-decimal.md
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---
title: Allow Decimal
description: A validation function to allow only decimal numbers.
author: Legopitstop
tags: validation,decimals
---

```py
from tkinter import Tk, Entry


def allow_decimal(action, value):
if action == "1":
if value == "":
return True
try:
float(value)
return True
except ValueError:
return False
return True


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_decimal)
Entry(root, validate="key", validatecommand=(reg, "%d", "%P")).pack()

root.mainloop()
```
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---
title: Allow Digits with A Max Length
description: A validation function to allow only digits with a specified maximum length.
author: Legopitstop
tags: validation,max,length
---

```py
from tkinter import Tk, Entry


def allow_digits_with_max_length(action, value, max_length):
if action == "1":
return value == "" or (value.isdigit() and len(value) <= int(max_length))
return True


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_digits_with_max_length)
# 4 is the max length
Entry(root, validate="key", validatecommand=(reg, "%d", "%P", 4)).pack()

root.mainloop()
```
24 changes: 24 additions & 0 deletions snippets/python/[tkinter]/entry-validation/allow-lowercase.md
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---
title: Allow Lowercase
description: A validation function to allow only lowercase alphabetic characters.
author: Legopitstop
tags: validation,lowercase
---

```py
from tkinter import Tk, Entry


def allow_lowercase(value):
return value.islower() or value == ""


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_lowercase)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
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---
title: Allow Negative Integers
description: A validation function to allow only negative integers.
author: Legopitstop
tags: validation,negative,integers
---

```py
from tkinter import Tk, Entry


def allow_negative_integers(value):
return (
value in ("", "-") or value.startswith("-") and value[1:].isdigit()
if value
else True
)


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_negative_integers)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
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Original file line number Diff line number Diff line change
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---
title: Allow Numbers in Range
description: A validation function to allow only numbers within a specified range.
author: Legopitstop
tags: validation,number,range
---

```py
from tkinter import Tk, Entry


def allow_numbers_in_range(action, value, min_value, max_value):
if action == "1":
try:
num = float(value)
return float(min_value) <= num <= float(max_value)
except ValueError:
return False
return True


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_numbers_in_range)
# 0 is the minimum value
# 10 is the maximum value
Entry(root, validate="key", validatecommand=(reg, "%d", "%P", 0, 10)).pack()

root.mainloop()
```
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---
title: Allow Only Alphabets
description: A validation function to allow only alphabetic characters.
author: Legopitstop
tags: validation,alphabets
---

```py
from tkinter import Tk, Entry


def allow_only_alphabets(value):
return value.isalpha() or value == ""


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_only_alphabets)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
24 changes: 24 additions & 0 deletions snippets/python/[tkinter]/entry-validation/allow-only-digits.md
View file Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
---
title: Allow Only Digits
description: A validation function to allow only digits.
author: Legopitstop
tags: validation,digits
---

```py
from tkinter import Tk, Entry


def allow_only_digits(value):
return value.isdigit() or value == ""


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_only_digits)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
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Original file line number Diff line number Diff line change
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---
title: Allow Positive Integers
description: A validation function to allow only positive integers.
author: Legopitstop
tags: validation,positive,integers
---

```py
from tkinter import Tk, Entry


def allow_positive_integers(value):
return value.isdigit() and (value == "" or int(value) > 0)


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_positive_integers)
Entry(root, validate="key", validatecommand=(reg, "%P")).pack()

root.mainloop()
```
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Original file line number Diff line number Diff line change
@@ -0,0 +1,32 @@
---
title: Allow signed Decimals
description: A validation function to allow only signed decimal numbers.
author: Legopitstop
tags: validation,signed,decimals
---

```py
from tkinter import Tk, Entry


def allow_signed_decimals(action, value):
if action == "1":
try:
if value in ("", "-"):
return True
float(value)
return True
except ValueError:
return False
return True


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_signed_decimals)
Entry(root, validate="key", validatecommand=(reg, "%d", "%P")).pack()

root.mainloop()
```
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---
title: Allow Signed Integers
description: A validation function to allow only signed integers.
author: Legopitstop
tags: validation,signed,integers
---

```py
from tkinter import Tk, Entry


def allow_signed_integers(action, value):
if action == "1":
return (
value in ("", "-")
or value.isdigit()
or (value.startswith("-") and value[1:].isdigit())
)
return True


# Usage:
root = Tk()
root.geometry("200x200")

reg = root.register(allow_signed_integers)
Entry(root, validate="key", validatecommand=(reg, "%d", "%P")).pack()

root.mainloop()
```
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