import pygame # ===== Init ===== pygame.init() WIDTH, HEIGHT = 1750, 1500 screen = pygame.display.set_mode((WIDTH, HEIGHT)) pygame.display.set_caption("Currency Unit Converter") # ===== Colors ===== BG = (28, 30, 42) CARD = (45, 50, 65) BTN = (70, 140, 210) BTN_HOVER = (100, 170, 240) TEXT = (230, 230, 230) SUB = (170, 170, 185) INPUT_BG = (55, 60, 75) FONT_TITLE = pygame.font.Font(None, 42) FONT = pygame.font.Font(None, 30) FONT_SM = pygame.font.Font(None, 24) # ===== Exchange Rates (relative to USD) ===== rates = { "USD": 1.0, "CNY": 7.24, "EUR": 0.92, "JPY": 149.5, "GBP": 0.79, } currencies = list(rates.keys()) # ===== UI State ===== input_text = "" input_active = False from_currency = 0 to_currency = 1 result_text = "" hover_swap = False # ===== Helpers ===== def draw_rounded_rect(surface, color, rect, radius=12): pygame.draw.rect(surface, color, rect, border_radius=radius) def draw_dropdown(x, y, w, h, options, selected, opened, mouse_pos): rect = pygame.Rect(x, y, w, h) draw_rounded_rect(screen, INPUT_BG, rect) pygame.draw.rect(screen, SUB, rect, 2, border_radius=12) txt = FONT.render(options[selected], True, TEXT) screen.blit(txt, txt.get_rect(center=rect.center)) # Arrow ax = rect.right - 25 pts = [(ax, rect.centery - 6), (ax + 10, rect.centery - 6), (ax + 5, rect.centery + 4)] pygame.draw.polygon(screen, SUB, pts) if opened: for i, opt in enumerate(options): o_rect = pygame.Rect(x, y + (i + 1) * (h + 4), w, h) draw_rounded_rect(screen, INPUT_BG, o_rect) pygame.draw.rect(screen, SUB, o_rect, 1, border_radius=10) ot = FONT.render(opt, True, TEXT) screen.blit(ot, ot.get_rect(center=o_rect.center)) return rect # ===== Rects ===== input_rect = pygame.Rect(60, 200, 280, 50) from_rect = pygame.Rect(60, 300, 180, 44) to_rect = pygame.Rect(510, 300, 180, 44) swap_rect = pygame.Rect(330, 310, 90, 44) convert_rect = pygame.Rect(225, 400, 300, 55) from_opened = False to_opened = False clock = pygame.time.Clock() running = True # ===== Main Loop ===== while running: screen.fill(BG) mouse_pos = pygame.mouse.get_pos() for event in pygame.event.get(): if event.type == pygame.QUIT: running = False if event.type == pygame.MOUSEBUTTONDOWN: # Input box input_active = input_rect.collidepoint(event.pos) # Convert button if convert_rect.collidepoint(event.pos): try: amount = float(input_text) from_cur = currencies[from_currency] to_cur = currencies[to_currency] usd_amount = amount / rates[from_cur] converted = usd_amount * rates[to_cur] result_text = f"{amount:.2f} {from_cur} = {converted:.2f} {to_cur}" except ValueError: result_text = "Please enter a valid number" # Swap if swap_rect.collidepoint(event.pos): from_currency, to_currency = to_currency, from_currency # Dropdowns if from_rect.collidepoint(event.pos): from_opened = not from_opened to_opened = False elif to_rect.collidepoint(event.pos): to_opened = not to_opened from_opened = False else: if from_opened: for i in range(len(currencies)): if pygame.Rect(60, 300 + (i + 1) * 48, 180, 44).collidepoint(event.pos): from_currency = i from_opened = False if to_opened: for i in range(len(currencies)): if pygame.Rect(510, 300 + (i + 1) * 48, 180, 44).collidepoint(event.pos): to_currency = i to_opened = False if event.type == pygame.KEYDOWN: if input_active: if event.key == pygame.K_BACKSPACE: input_text = input_text[:-1] elif len(input_text) < 15 and event.unicode.isprintable(): input_text += event.unicode # ===== Title ===== title = FONT_TITLE.render("💱 Currency Converter", True, TEXT) screen.blit(title, (WIDTH // 2 - title.get_width() // 2, 30)) # ===== Input Box ===== label = FONT_SM.render("Enter Amount:", True, SUB) screen.blit(label, (60, 175)) draw_rounded_rect(screen, INPUT_BG if not input_active else (65, 70, 90), input_rect) pygame.draw.rect(screen, SUB, input_rect, 2, border_radius=12) display = input_text if input_text else "Type here..." clr = TEXT if input_text else SUB txt_surf = FONT.render(display, True, clr) screen.blit(txt_surf, txt_surf.get_rect(centery=input_rect.centery, left=input_rect.left + 15)) # ===== From / To Labels ===== f_lab = FONT_SM.render("From:", True, SUB) t_lab = FONT_SM.render("To:", True, SUB) screen.blit(f_lab, (60, 278)) screen.blit(t_lab, (510, 278)) # ===== Dropdowns ===== from_rect_final = draw_dropdown(60, 300, 180, 44, currencies, from_currency, from_opened, mouse_pos) to_rect_final = draw_dropdown(510, 300, 180, 44, currencies, to_currency, to_opened, mouse_pos) # ===== Swap Button ===== hover_swap = swap_rect.collidepoint(mouse_pos) draw_rounded_rect(screen, BTN_HOVER if hover_swap else BTN, swap_rect) pygame.draw.rect(screen, SUB, swap_rect, 2, border_radius=12) sw_txt = FONT.render("⇄ Swap", True, TEXT) screen.blit(sw_txt, sw_txt.get_rect(center=swap_rect.center)) # ===== Convert Button ===== hover_cvt = convert_rect.collidepoint(mouse_pos) draw_rounded_rect(screen, BTN_HOVER if hover_cvt else BTN, convert_rect) pygame.draw.rect(screen, SUB, convert_rect, 2, border_radius=14) cvt_txt = FONT.render("Convert", True, TEXT) screen.blit(cvt_txt, cvt_txt.get_rect(center=convert_rect.center)) # ===== Result ===== if result_text: result_color = (120, 220, 150) res_surf = FONT.render(result_text, True, result_color) screen.blit(res_surf, res_surf.get_rect(center=(WIDTH // 2, 480))) # ===== Rate Reference ===== ref = FONT_SM.render("Reference rates (vs USD)", True, (120, 120, 140)) screen.blit(ref, (WIDTH // 2 - ref.get_width() // 2, 510)) rate_str = " | ".join([f"{c}: {rates[c]}" for c in currencies]) rate_surf = FONT_SM.render(rate_str, True, (140, 140, 155)) screen.blit(rate_surf, rate_surf.get_rect(center=(WIDTH // 2, 540))) pygame.display.flip() clock.tick(60) pygame.quit()