import ctypes
import dxcam_cpp as dxcam

SendInput = ctypes.windll.user32.SendInput

INPUT_MOUSE = 0
MOUSEEVENTF_LEFTDOWN = 0x0002
MOUSEEVENTF_LEFTUP   = 0x0004

class MOUSEINPUT(ctypes.Structure):
    _fields_ = [("dx", ctypes.c_long),
                ("dy", ctypes.c_long),
                ("mouseData", ctypes.c_ulong),
                ("dwFlags", ctypes.c_ulong),
                ("time", ctypes.c_ulong),
                ("dwExtraInfo", ctypes.POINTER(ctypes.c_ulong))]

class INPUT(ctypes.Structure):
    _fields_ = [("type", ctypes.c_ulong),
                ("mi", MOUSEINPUT)]

def send_click():
    inp = INPUT(INPUT_MOUSE, MOUSEINPUT(0, 0, 0, MOUSEEVENTF_LEFTDOWN, 0, None))
    SendInput(1, ctypes.byref(inp), ctypes.sizeof(inp))
    inp = INPUT(INPUT_MOUSE, MOUSEINPUT(0, 0, 0, MOUSEEVENTF_LEFTUP, 0, None))
    SendInput(1, ctypes.byref(inp), ctypes.sizeof(inp))

WIDTH, HEIGHT = 3840, 2160
mx, my = WIDTH // 2, HEIGHT // 2

TARGET_B, TARGET_G, TARGET_R = 230, 55, 55

camera = dxcam.create(
    device_idx=0,
    region=(mx, my, mx + 1, my + 1)
)

last_is_red = False

while True:
    frame = camera.grab()
    if frame is None:
        continue

    b, g, r = frame[0, 0]

    cur_is_red = (b == TARGET_B and g == TARGET_G and r == TARGET_R)

    if last_is_red and not cur_is_red:
        send_click()
        print("点击触发")

    last_is_red = cur_is_red