MVC整个例子的源码
下面就是整MVC例子的源码：
#windows应用程序
#开发人员：蔡军生（QQ：9073204） 深圳 2014-9-24
#使用类来描述
from ctypes import *
from ctypes.wintypes import *
WS_EX_APPWINDOW = 0x40000
WS_OVERLAPPEDWINDOW = 0xcf0000
WS_CAPTION = 0xc00000
SW_SHOWNORMAL = 1
SW_SHOW = 5
CS_HREDRAW = 2
CS_VREDRAW = 1
CW_USEDEFAULT = 0x80000000
MK_LBUTTON = 0x0001
MK_RBUTTON = 0x0002
MK_SHIFT = 0x0004
MK_CONTROL = 0x0008
MK_MBUTTON = 0x0010
WM_NULL = 0
WM_DESTROY = 2
WM_NCCREATE = 0x0081
WM_PAINT = 0x000F
WM_MOUSEMOVE = 0x0200
WM_LBUTTONDOWN = 0x0201
WM_LBUTTONUP = 0x0202
WM_CAPTURECHANGED = 0x0215
WHITE_BRUSH = 0
GWL_USERDATA = -21
IDC_ARROW = 32512
WNDPROCTYPE = WINFUNCTYPE(c_int, HWND, c_uint, WPARAM, LPARAM)
#定义窗口类结构
class WNDCLASSEX(Structure):
_fields_ = [("cbSize", c_uint),
("style", c_uint),
("lpfnWndProc", WNDPROCTYPE),
("cbClsExtra", c_int),
("cbWndExtra", c_int),
("hInstance", HANDLE),
("hIcon", HANDLE),
("hCursor", HANDLE),
("hBrush", HANDLE),
("lpszMenuName", LPCWSTR),
("lpszClassName", LPCWSTR),
("hIconSm", HANDLE)]
#定义创建窗口的参数结构
class CREATESTRUCTW(Structure):
_fields_ = [("lpCreateParams", LPVOID),
("hInstance", HANDLE),
("hMenu", HMENU),
("hwndParent", HWND),
("cy", c_int),
("cx", c_int),
("y", c_int),
("x", c_int),
("style", LONG),
("lpszName", LPCWSTR),
("lpszClass", LPCWSTR),
("dwExStyle", DWORD)]
#定义窗口绘图结构
class PAINTSTRUCT(Structure):
_fields_ = [('hdc', c_int),
('fErase', c_int),
('rcPaint', RECT),
('fRestore', c_int),
('fIncUpdate', c_int),
('rgbReserved', c_wchar * 32)]
#窗口类
class Window:
def __init__(self, hWnd):
self.hWnd = hWnd
def Display(self, cmdShow):
windll.user32.ShowWindow(self.hWnd, cmdShow)
windll.user32.UpdateWindow(self.hWnd)
def CaptureMouse(self):
windll.user32.SetCapture(self.hWnd)
def ReleaseMouse(self):
windll.user32.ReleaseCapture()
def HasCapture(self):
return False
def IsCtrl(self, wParam):
return (wParam & MK_CONTROL) != 0
def IsShift(self, wParam):
return (wParam & MK_SHIFT) != 0
def IsLButton(self, wParam):
return (wParam & MK_LBUTTON) != 0
def IsMButton(self, wParam):
return (wParam & MK_MBUTTON) != 0
def IsRButton(self, wParam):
return (wParam & MK_RBUTTON) != 0
#窗口类型注册类
class WinClassMaker:
def __init__(self, wndProc, className, hInst):
self.wndClass = WNDCLASSEX()
self.wndClass.cbSize = sizeof(WNDCLASSEX)
self.wndClass.style = CS_HREDRAW | CS_VREDRAW
self.wndClass.lpfnWndProc = wndProc
self.wndClass.cbClsExtra = 0
self.wndClass.cbWndExtra = 0
self.wndClass.hInstance = hInst
self.wndClass.hIcon = 0
self.wndClass.hCursor = windll.user32.LoadCursorW(0, IDC_ARROW)
self.wndClass.hBrush = windll.gdi32.GetStockObject(WHITE_BRUSH)
self.wndClass.lpszMenuName = 0
self.wndClass.lpszClassName = className
self.wndClass.hIconSm = 0
def Register(self):
return windll.user32.RegisterClassExW(byref(self.wndClass))
#创建窗口
class WinMaker:
def __init__(self, className, hInst):
self.className = className
self.hInst = hInst
self.style = WS_OVERLAPPEDWINDOW | WS_CAPTION
self.exStyle = 0
self.x = CW_USEDEFAULT
self.y = 0
self.width = CW_USEDEFAULT
self.height = 0
self.hWndParent = HWND(0)
self.hMenu = HWND(0)
self.wndCreatData = c_void_p(0)
def Create(self, wndCreatData, title):
self.hWnd = windll.user32.CreateWindowExW(
self.exStyle, self.className, title,
self.style,
self.x, self.y,
self.width, self.height,
self.hWndParent,
self.hMenu,
self.hInst,
py_object(wndCreatData))
if not self.hWnd:
print('Failed to create window')
exit(0)
return self.hWnd
class Controller:
def __init__(self):
self.hWnd = HWND()
self.msgfun = {
WM_DESTROY: self.OnDestroy,
WM_PAINT: self.OnPaint,
WM_MOUSEMOVE: self.OnMouseMove,
WM_LBUTTONDOWN: self.OnLButtonDown,
WM_LBUTTONUP: self.OnLButtonUp,
WM_CAPTURECHANGED: self.OnCaptureChanged,
WM_NULL: self.OnNull #最后一个函数处理，方便在前面插入函数
}
def SetWnd(self, hWnd):
self.hWnd = hWnd
def GetWnd(self):
return self.hWnd
def GetPoint(self, lParam):
pt = POINT()
pt.x = lParam & 0xFFFF
pt.y = (lParam>>16) & 0xFFFF
return pt
def MyWndProc(self, hWnd, Msg, wParam, lParam):
if Msg in self.msgfun and self.msgfun[Msg](wParam, lParam):
return 0
else:
return windll.user32.DefWindowProcW(hWnd, Msg, wParam, lParam)
def OnNull(self, wParam, lParam):
pass
return False
def OnDestroy(self, wParam, lParam):
windll.user32.PostQuitMessage(0)
print('OnDestroy')
return True
def OnPaint(self, wParam, lParam):
pass
return False
def OnMouseMove(self, wParam, lParam):
pass
return False
def OnLButtonDown(self, wParam, lParam):
pass
return False
def OnLButtonUp(self, wParam, lParam):
pass
return False
def OnCaptureChanged(self, wParam, lParam):
pass
return False
#窗口消息处理回调函数
def PyWndProc(hWnd, Msg, wParam, lParam):
pyCtrl = windll.user32.GetWindowLongW(hWnd, GWL_USERDATA)
if Msg == WM_NCCREATE:
creatstructw = cast(lParam, POINTER(CREATESTRUCTW)).contents
pyCtrl = creatstructw.lpCreateParams
windll.user32.SetWindowLongW(hWnd, GWL_USERDATA, pyCtrl)
#获取控制类对象
ctrl = cast(pyCtrl, py_object).value
ctrl.SetWnd(hWnd)
if pyCtrl:
#获取控制类对象
ctrl = cast(pyCtrl, py_object).value
return ctrl.MyWndProc(hWnd, Msg, wParam, lParam)
else:
return windll.user32.DefWindowProcW(hWnd, Msg, wParam, lParam)
#画布
class Canvas:
def __init__(self, hdc):
self.hdc = hdc
def Gethdc(self):
return self.hdc
def SetPixel(self, x, y, color):
windll.gdi32.SetPixel(self.hdc, x, y, color)
def MoveTo(self, x, y):
windll.gdi32.MoveToEx(self.hdc, x, y, 0)
def LineTo(self, x, y):
windll.gdi32.LineTo(self.hdc, x, y)
def Line(self, x1, y1, x2, y2):
windll.gdi32.MoveToEx(self.hdc, x1, y1, 0)
windll.gdi32.LineTo(self.hdc, x2, y2)
def Text(self, x, y, text):
windll.gdi32.TextOutW(self.hdc ,x, y, text, len(text))
def RGB(self, r, g, b):
r = r & 0xFF
g = g & 0xFF
b = b & 0xFF
return (b << 16) | (g << 8) | r
class PaintCanvas(Canvas):
"""用于OnPaint消息处理"""
def __init__(self, hWnd):
self.hWnd = hWnd
self.paint = PAINTSTRUCT()
hdc = windll.user32.BeginPaint(self.hWnd, byref(self.paint))
Canvas.__init__(self, hdc)
def __del__(self):
windll.user32.EndPaint(self.hWnd, byref(self.paint))
class UpdateCanvas(Canvas):
"""用于更新窗口"""
def __init__(self, hWnd):
hdc = windll.user32.GetDC(hWnd)
Canvas.__init__(self, hdc)
self.hWnd = hWnd
def __del__(self):
windll.user32.ReleaseDC(self.hWnd, self.hdc)
#画笔
class Pen:
def __init__(self, penstyle, width, color):
self.hpe = windll.gdi32.CreatePen(penstyle, width, color)
def __del__(self):
windll.gdi32.DeleteObject(self.hpe)
def Gethpe(self):
return self.hpe
class Holder:
def __init__(self, hdc, hobj):
self.hdc = hdc
self.old = windll.gdi32.SelectObject(hdc, hobj)
def __del__(self):
windll.gdi32.SelectObject(self.hdc, self.old)
#MVC类
#模型类
class Model:
def __init__(self):
self.ptList = []
self.maxList = 2000
def AddPoint(self, x, y, isStart):
if len(self.ptList) > self.maxList:
self.ptList.remove(0)
#以元组的方式保存到列表
self.ptList.append((x,y,isStart))
def GetPoint(self):
return self.ptList
#视图类
class View:
def __init__(self):
self.x = 0
self.y = 0
def Paint(self, canvas, ptList):
pen = Pen(0, 0, canvas.RGB(255, 0, 0))
penhold = Holder(canvas.Gethdc(), pen.Gethpe())
self.PrintPos(canvas, self.x, self.y)
for pt in ptList:
if pt[2]:
canvas.MoveTo(pt[0], pt[1])
else:
canvas.LineTo(pt[0], pt[1])
def PrintPos(self, canvas, x, y):
self.x = x
self.y = y
strOut = u'Mouse: %04d, %04d' % (x, y)
canvas.Text(0, 0, strOut)
def MoveTo(self, canvas, x, y, isVisible):
if isVisible:
pen = Pen(0, 0, canvas.RGB(255, 0, 0))
penhold = Holder(canvas.Gethdc(), pen.Gethpe())
canvas.Line(self.x, self.y, x, y)
self.PrintPos(canvas, x, y)
#控制类
class CtrlAll(Controller):
def __init__(self):
Controller.__init__(self) #调用基类构造方法
self.model = Model()
self.view = View()
self.win = Window(self.GetWnd())
def OnPaint(self, wParam, lParam):
paint = PaintCanvas(self.GetWnd())
self.view.Paint(paint, self.model.GetPoint())
return True
def OnMouseMove(self, wParam, lParam):
paint = UpdateCanvas(self.GetWnd())
pt = self.GetPoint(lParam)
if self.win.IsLButton(wParam):
self.model.AddPoint(pt.x, pt.y, False)
self.view.MoveTo(paint, pt.x, pt.y, True)
else:
self.view.PrintPos(paint, pt.x, pt.y)
return True
def OnLButtonDown(self, wParam, lParam):
self.win.CaptureMouse()
paint = UpdateCanvas(self.GetWnd())
pt = self.GetPoint(lParam)
self.view.MoveTo(paint, pt.x, pt.y, False)
self.model.AddPoint(pt.x, pt.y, True)
return True
def OnLButtonUp(self, wParam, lParam):
self.win.ReleaseMouse()
return True
#主函数入口
def main():
#程序实例句柄
hInst = windll.kernel32.GetModuleHandleW(None)
WndProc = WNDPROCTYPE(PyWndProc)
#窗口类名称
className = u'ShenzhenCai'
#窗口标题
wname = u'MVC'
#创建窗口类型
winClass = WinClassMaker(WndProc, className, hInst)
winClass.Register()
#构造窗口对象
maker = WinMaker(className, hInst)
#控制类
ctrl = CtrlAll()
#创建窗口
win = Window(maker.Create(ctrl, wname))
#创建显示
win.Display(SW_SHOW)
#消息循环
msg = MSG()
lpmsg = pointer(msg)
print('Entering message loop')
while windll.user32.GetMessageW(lpmsg, 0, 0, 0) != 0:
windll.user32.TranslateMessage(lpmsg)
windll.user32.DispatchMessageW(lpmsg)
print('done.')
if __name__ == "__main__":
print( "Win32 Application in python" )
main()