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# The start of a win32gui generic demo.
# Feel free to contribute more demos back ;-)

import math
import random
import time

import win32api
import win32con
import win32gui


def _MyCallback(hwnd, extra):
    hwnds, classes = extra
    hwnds.append(hwnd)
    classes[win32gui.GetClassName(hwnd)] = 1


def TestEnumWindows():
    windows = []
    classes = {}
    win32gui.EnumWindows(_MyCallback, (windows, classes))
    print(
        "Enumerated a total of %d windows with %d classes"
        % (len(windows), len(classes))
    )
    if "tooltips_class32" not in classes:
        print("Hrmmmm - I'm very surprised to not find a 'tooltips_class32' class.")


def OnPaint_1(hwnd, msg, wp, lp):
    dc, ps = win32gui.BeginPaint(hwnd)
    win32gui.SetGraphicsMode(dc, win32con.GM_ADVANCED)
    br = win32gui.CreateSolidBrush(win32api.RGB(255, 0, 0))
    win32gui.SelectObject(dc, br)
    angle = win32gui.GetWindowLong(hwnd, win32con.GWL_USERDATA)
    win32gui.SetWindowLong(hwnd, win32con.GWL_USERDATA, angle + 2)
    r_angle = angle * (math.pi / 180)
    win32gui.SetWorldTransform(
        dc,
        {
            "M11": math.cos(r_angle),
            "M12": math.sin(r_angle),
            "M21": math.sin(r_angle) * -1,
            "M22": math.cos(r_angle),
            "Dx": 250,
            "Dy": 250,
        },
    )
    win32gui.MoveToEx(dc, 250, 250)
    win32gui.BeginPath(dc)
    win32gui.Pie(dc, 10, 70, 200, 200, 350, 350, 75, 10)
    win32gui.Chord(dc, 200, 200, 850, 0, 350, 350, 75, 10)
    win32gui.LineTo(dc, 300, 300)
    win32gui.LineTo(dc, 100, 20)
    win32gui.LineTo(dc, 20, 100)
    win32gui.LineTo(dc, 400, 0)
    win32gui.LineTo(dc, 0, 400)
    win32gui.EndPath(dc)
    win32gui.StrokeAndFillPath(dc)
    win32gui.EndPaint(hwnd, ps)
    return 0


wndproc_1 = {win32con.WM_PAINT: OnPaint_1}


def OnPaint_2(hwnd, msg, wp, lp):
    dc, ps = win32gui.BeginPaint(hwnd)
    win32gui.SetGraphicsMode(dc, win32con.GM_ADVANCED)
    l, t, r, b = win32gui.GetClientRect(hwnd)

    for x in range(25):
        vertices = (
            {
                "x": int(random.random() * r),
                "y": int(random.random() * b),
                "Red": int(random.random() * 0xFF00),
                "Green": 0,
                "Blue": 0,
                "Alpha": 0,
            },
            {
                "x": int(random.random() * r),
                "y": int(random.random() * b),
                "Red": 0,
                "Green": int(random.random() * 0xFF00),
                "Blue": 0,
                "Alpha": 0,
            },
            {
                "x": int(random.random() * r),
                "y": int(random.random() * b),
                "Red": 0,
                "Green": 0,
                "Blue": int(random.random() * 0xFF00),
                "Alpha": 0,
            },
        )
        mesh = ((0, 1, 2),)
        win32gui.GradientFill(dc, vertices, mesh, win32con.GRADIENT_FILL_TRIANGLE)
    win32gui.EndPaint(hwnd, ps)
    return 0


wndproc_2 = {win32con.WM_PAINT: OnPaint_2}


def TestSetWorldTransform():
    wc = win32gui.WNDCLASS()
    wc.lpszClassName = "test_win32gui_1"
    wc.style = win32con.CS_GLOBALCLASS | win32con.CS_VREDRAW | win32con.CS_HREDRAW
    wc.hbrBackground = win32con.COLOR_WINDOW + 1
    wc.lpfnWndProc = wndproc_1
    class_atom = win32gui.RegisterClass(wc)
    hwnd = win32gui.CreateWindow(
        wc.lpszClassName,
        "Spin the Lobster!",
        win32con.WS_CAPTION | win32con.WS_VISIBLE,
        100,
        100,
        900,
        900,
        0,
        0,
        0,
        None,
    )
    for x in range(500):
        win32gui.InvalidateRect(hwnd, None, True)
        win32gui.PumpWaitingMessages()
        time.sleep(0.01)
    win32gui.DestroyWindow(hwnd)
    win32gui.UnregisterClass(wc.lpszClassName, None)


def TestGradientFill():
    wc = win32gui.WNDCLASS()
    wc.lpszClassName = "test_win32gui_2"
    wc.style = win32con.CS_GLOBALCLASS | win32con.CS_VREDRAW | win32con.CS_HREDRAW
    wc.hbrBackground = win32con.COLOR_WINDOW + 1
    wc.lpfnWndProc = wndproc_2
    class_atom = win32gui.RegisterClass(wc)
    hwnd = win32gui.CreateWindowEx(
        0,
        class_atom,
        "Kaleidoscope",
        win32con.WS_CAPTION
        | win32con.WS_VISIBLE
        | win32con.WS_THICKFRAME
        | win32con.WS_SYSMENU,
        100,
        100,
        900,
        900,
        0,
        0,
        0,
        None,
    )
    s = win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE)
    win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, s | win32con.WS_EX_LAYERED)
    win32gui.SetLayeredWindowAttributes(hwnd, 0, 175, win32con.LWA_ALPHA)
    for x in range(30):
        win32gui.InvalidateRect(hwnd, None, True)
        win32gui.PumpWaitingMessages()
        time.sleep(0.3)
    win32gui.DestroyWindow(hwnd)
    win32gui.UnregisterClass(class_atom, None)


print("Enumerating all windows...")
TestEnumWindows()
print("Testing drawing functions ...")
TestSetWorldTransform()
TestGradientFill()
print("All tests done!")