Merge pull request #73 from SahajaThota/master

added a calculator.py

hooman/demos/calculator.py

@@ -0,0 +1,82 @@
+from hooman import Hooman
+import pygame
+
+# Initialize Hooman and Pygame
+h = Hooman(400, 600, "Calculator")
+pygame.font.init()
+
+# Set up fonts
+font_big = pygame.font.Font(None, 50)
+font_small = pygame.font.Font(None, 36)
+
+# Calculator variables
+expression = ""
+result = ""
+
+# Store the previous state of the left mouse button
+h.prev_left_button = False
+
+# Function to evaluate the expression and update the result
+def calculate():
+    try:
+        global result
+        result = str(eval(expression))
+    except:
+        result = "Error"
+
+# Function to handle button clicks
+def handle_button_click(button_text):
+    global expression, result
+    if button_text == "=":
+        calculate()
+    elif button_text == "C":
+        expression = ""
+        result = ""
+    else:
+        expression += button_text
+
+# Main loop
+while h.is_running:
+    h.background(h.color["white"])
+
+    # Draw the input expression
+    text_surface = font_big.render(expression, True, pygame.Color("black"))
+    h.screen.blit(text_surface, (20, 50))
+
+    # Draw the result
+    text_surface = font_big.render(result, True, pygame.Color("green"))
+    h.screen.blit(text_surface, (20, 100))
+
+    # Draw calculator buttons
+    buttons = [
+        ("7", 20, 200), ("8", 120, 200), ("9", 220, 200), ("/", 320, 200),
+        ("4", 20, 300), ("5", 120, 300), ("6", 220, 300), ("*", 320, 300),
+        ("1", 20, 400), ("2", 120, 400), ("3", 220, 400), ("-", 320, 400),
+        ("C", 20, 500), ("0", 120, 500), ("=", 220, 500),  # Removed the "." button
+        ("+", 320, 500),
+    ]
+    button_size = 80
+
+    for button in buttons:
+        text, x, y = button
+        pygame.draw.rect(h.screen, pygame.Color(200, 200, 200), (x, y, button_size, button_size))
+
+        text_surface = font_small.render(text, True, pygame.Color("black"))
+        text_rect = text_surface.get_rect(center=(x + button_size // 2, y + button_size // 2))
+        h.screen.blit(text_surface, text_rect)
+
+    # Check for left mouse button click
+    mouse_x, mouse_y = pygame.mouse.get_pos()
+    left_button, _, _ = pygame.mouse.get_pressed()
+
+    if left_button and not h.prev_left_button:
+        for button in buttons:
+            text, x, y = button
+            if x < mouse_x < x + button_size and y < mouse_y < y + button_size:
+                handle_button_click(text)
+
+    # Store the current state of the left button for the next iteration
+    h.prev_left_button = left_button
+
+    h.flip_display()
+    h.event_loop()