Added possibility to pass an executable to buttons to recalculate the position.

pg.py

@@ -2,6 +2,7 @@
 
 import pygame
 from tools import text
+from typing import Union, Callable
 
 pygame.init()
 
@@ -20,12 +21,19 @@ default_font = pygame.font.Font(pygame.font.get_default_font(), 16)
 
 
 class Hover:
-    def __init__(self, function=None, ca=None, position: tuple=None, size: tuple=None):
+    def __init__(self, function=None, ca=None, position: Union[tuple, Callable]=None, size: tuple=None):
         self.function = function
         self.ca = ca
+        self.callable_position = None
+
         if not position is None and not size is None:
             self.x, self.y = position
             self.w, self.h = size
+
+        elif position is Callable:
+            self.x, self.y = position()
+            self.callable_position = position
+
         self.active = True
 
     def check(self, mouse_pos: tuple):
@@ -59,10 +67,17 @@ class Hover:
 
 
 class Button:
-    def __init__(self, function=None, ca=None, position: tuple=None, size: tuple=None, key: int=0):  # ca = collide able, key: 0 = left 1 = mouse wheel pressed 2 = right
+    def __init__(self, function=None, ca=None, position: Union[tuple, Callable]=None, size: tuple=None, key: int=0):  # ca = collide able, key: 0 = left 1 = mouse wheel pressed 2 = right
+        self.callable_position = None
+
         if not position is None and not size is None:
             self.x, self.y = position
             self.width, self.height = size
+
+        elif position is Callable:
+            self.x, self.y = position()
+            self.callable_position = position
+
         self.function = function
         self.active = True
         self.ca = ca
@@ -82,9 +97,8 @@ class Button:
 
 
 class TextButton:
-    def __init__(self, text: str, pos: tuple, surface: pygame.Surface, function=None, key: int=0, text_color: tuple=white, bg_color: tuple=gray, font: pygame.font.Font=default_font, padding: int=8):
+    def __init__(self, text: str, position: Union[tuple, Callable], surface: pygame.Surface, function=None, key: int=0, text_color: tuple=white, bg_color: tuple=gray, font: pygame.font.Font=default_font, padding: int=8):
         self.text = text
-        self.pos = pos
         self.surface = surface
         self.function = function
         self.text_color = text_color
@@ -92,6 +106,15 @@ class TextButton:
         self.font = font
         self.padding = padding
 
+        self.callable_position = None
+
+        if position is int:
+            self.position = position
+
+        else:
+            self.position = position()
+            self.callable_position = position
+
         self.text_object = self.generate_text(text)
         self.background = self.generate_background()
 
@@ -108,12 +131,22 @@ class TextButton:
 
         return pygame.Rect(self.pos, (w, h))
 
-    def update(self, new_text: str=None, new_pos: tuple=None, new_surface: pygame.Surface=None, new_func=None, new_key: int=None, new_text_color: tuple=None, new_bg_color: tuple=None, new_font: pygame.font.Font=None, new_padding: int=None):
+    def update(self, new_text: str=None, new_pos: Union[tuple, Callable]=None, new_surface: pygame.Surface=None, new_func=None, new_key: int=None, new_text_color: tuple=None, new_bg_color: tuple=None, new_font: pygame.font.Font=None, new_padding: int=None):
         if new_text is None:
             new_text = self.text
 
+        new_callable_pos = None
+
         if new_pos is None:
-            new_pos = self.pos
+            new_pos = self.position
+            new_callable_pos = self.callable_position
+
+        elif new_pos is int:
+            new_callable_pos = None
+
+        elif new_pos is Callable:
+            new_pos = new_pos()
+            new_callable_pos = new_pos
 
         if new_surface is None:
             new_surface = self.surface
@@ -137,7 +170,8 @@ class TextButton:
             new_padding = self.padding
 
         self.text = new_text
-        self.pos = new_pos
+        self.position = new_pos
+        self.callable_position = new_callable_pos
         self.surface = new_surface
         self.function = new_func
         self.text_color = new_text_color
@@ -151,7 +185,7 @@ class TextButton:
         self.generate_background()
 
     def blit(self, surface: pygame.Surface=None):
-        x, y = self.pos
+        x, y = self.position
 
         if surface is None:
             surface = self.surface