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'''Image Display and Printing demo.
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Demonstrates a number of techniques for displaying and printing images using
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the PythonWin MFC framework. This method of printing is suitable for
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"automatic" printing, and so, uses the default printer settings.
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As this was ripped out of a larger app, I left some other stuff in as well:
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*) The pixel value under the cursor is displayed in the title bar.
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*) You can draw up to four circles on the image using the mouse.
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*) After four circles are drawn, you can drag them to new locations.
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*) You can delete a circle with the delete or backspace key.
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*) Right click on the image to get an options menu (print only for now).
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Usage:
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from the windows command line:
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PythonWin.exe /app path/DisplayImage.py [-p -m mag] [imagePath]
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where:
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path: The directory containing this script
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-p: If present, print the image and exit
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-m mag: Only used if -p present, the magnification to print at,
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defaults to 3
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imagePath: The image to open and display
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You may need to supply the PythonWin.exe path as well.
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If you use the -p option, you must supply the imagePath as well
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If no imagePath is given, an open file dialog is used to get the image.
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from the Python/PythonWin command prompt (or, within a script):
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import DisplayImage
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DisplayImage.displayImage() # Use file dialog to get and display an
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# image
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DisplayImage.displayImage(imgPath) # display given image
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DisplayImage.printImage(imgPath, mag) # print image at mag.
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Requires: PIL (Python Imaging Library)
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PythonWin (Build 125 or later)
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Written July 1999, Roger Burnham (rburnham@cri-inc.com)
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'''
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__version__ = '$Revision: 1.1 $'
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import sys, os
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import string
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import win32con, win32ui, win32api
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from pywin.mfc import dialog, window
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from pywin.framework import dlgappcore, app
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import timer
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import Image, ImageWin
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from math import hypot, cos, sin, pi
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_printAndExit = 0
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_printMag = None
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_defaultMag = 3
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printing = 0
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numDrawnCircles = 4
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IDC_CROSS = 32515
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cosTable = {}
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sinTable = {}
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degStep = 5
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for deg in range(degStep, 360, degStep):
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rad = deg*pi/180.0
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cosTable[deg] = cos(rad)
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sinTable[deg] = sin(rad)
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APS_NEXT_COMMAND_VALUE = 36900
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def nextCommandID():
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global APS_NEXT_COMMAND_VALUE
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id = APS_NEXT_COMMAND_VALUE
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APS_NEXT_COMMAND_VALUE = APS_NEXT_COMMAND_VALUE + 1
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return id
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APS_NEXT_CONTROL_VALUE = 16000
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def nextControlID():
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global APS_NEXT_CONTROL_VALUE
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id = APS_NEXT_CONTROL_VALUE
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APS_NEXT_CONTROL_VALUE = APS_NEXT_CONTROL_VALUE + 1
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return id
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color = {'Black' : ( 0<<0) + ( 0<<8) + ( 0<<16),
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'Red' : (255<<0) + ( 0<<8) + ( 0<<16),
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'Green' : ( 0<<0) + (230<<8) + ( 0<<16),
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'Blue' : ( 0<<0) + ( 0<<8) + (255<<16),
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'Cyan' : ( 0<<0) + (255<<8) + (255<<16),
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'Magenta' : (255<<0) + ( 0<<8) + (255<<16),
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'Yellow' : (255<<0) + (255<<8) + ( 0<<16),
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'White' : (255<<0) + (255<<8) + (255<<16),
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'Tan' : (203<<0) + (145<<8) + ( 86<<16),
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'Sand' : (248<<0) + (242<<8) + (131<<16),
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'Pink' : (255<<0) + (106<<8) + (167<<16),
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'Red-Orange' : (255<<0) + ( 69<<8) + ( 0<<16),
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'Orange' : (255<<0) + (165<<8) + ( 0<<16),
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'Crimson' : (210<<0) + ( 11<<8) + ( 16<<16),
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'Olive' : (105<<0) + (139<<8) + ( 34<<16),
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'Light Green' : ( 45<<0) + (255<<8) + ( 45<<16),
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'Dark Green' : ( 0<<0) + (110<<8) + ( 0<<16),
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}
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pen = {}
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brush = {}
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for key in color.keys():
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pen[key] = win32ui.CreatePen(win32con.PS_SOLID, 0, color[key])
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brush[key] = win32ui.CreateBrush(win32con.BS_SOLID, color[key], 0)
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def rgb(col):
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v = color[col]
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return (v>>0)&0xff, (v>>8)&0xff, (v>>16)&0xff
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def imagetemplate(img):
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style = (win32con.DS_MODALFRAME |
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win32con.WS_POPUP |
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win32con.WS_VISIBLE |
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win32con.WS_CAPTION |
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win32con.WS_SYSMENU)
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try:
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direc, file = os.path.split(img.filename)
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name, ext = os.path.splitext(file)
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except:
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name = 'Image'
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baseUnitX = 6
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baseUnitY = 13
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minW = len(' %s: (999,999) = 999 )' % name)*baseUnitX
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w = (max(img.size[0], minW)*4)/baseUnitX + 1
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h = (img.size[1]*8)/baseUnitY + 1
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extendedStyle = None
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font = None
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menuID = None
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windowClass = None
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return [[name, (0, 0, w, h), style,
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extendedStyle, font, menuID, windowClass,],]
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class ImgCtl(window.Wnd):
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def __init__ (self, img):
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window.Wnd.__init__(self, win32ui.CreateWnd())
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if img.mode not in ('RGB', 'L'):
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pilMode = 'RGB'
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else:
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pilMode = img.mode
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self.pilDisplay = ImageWin.Dib(pilMode, img.size)
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self.pilDisplay.paste(img)
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def OnDestroy(self, msg):
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window.Wnd.OnDestroy(self, msg)
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del self.pilDisplay.image
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del self.pilDisplay
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def OnPaint(self):
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dc, paintStruct = self.BeginPaint()
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self.pilDisplay.expose(dc.GetHandleOutput())
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self.EndPaint(paintStruct)
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class ImageDisplay(dialog.Dialog):
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cursor = None
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menuID = None
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menuList = None
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def __init__(self, img, pos, drawable):
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self.app = win32ui.GetApp()
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self.img = img
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self.pos = pos
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self.circleList = []
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self.drawable = drawable
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self.size = img.size
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self.mouseDown = 0
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self.drawing = 0
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self.moving = None
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self.mousexy = (0,0)
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dialog.Dialog.__init__(self, imagetemplate(img))
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if ImageDisplay.cursor is None:
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ImageDisplay.cursor = self.app.LoadStandardCursor(IDC_CROSS)
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if ImageDisplay.menuID is None:
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ImageDisplay.menuList = ['Avaliable Image Options',]
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ImageDisplay.menuList.append('Print')
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ImageDisplay.menuID = []
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for i in range(len(self.menuList)):
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ImageDisplay.menuID.append(nextCommandID())
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def PreDoModal(self):
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pass
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def OnInitDialog(self):
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rc = dialog.Dialog.OnInitDialog(self)
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self.SetWindowPos(win32con.HWND_TOP,
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tuple(list(self.pos) + [0, 0]),
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win32con.SWP_NOSIZE)
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self.imgCtl = ImgCtl(self.img)
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w = self.size[0]
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h = self.size[1]
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self.imgCtl.CreateWindow (None, self.img.filename,
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(win32con.WS_CHILD|
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win32con.WS_VISIBLE),
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(0, 0, w, h),
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self,
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nextControlID())
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self.title = self.GetWindowText()
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self.imgCtl.HookMessage(self.OnMouseMove, win32con.WM_MOUSEMOVE)
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self.imgCtl.HookMessage(self.OnSetCursor, win32con.WM_SETCURSOR)
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self.imgCtl.HookMessage(self.OnLMouseDown, win32con.WM_LBUTTONDOWN)
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self.imgCtl.HookMessage(self.OnLMouseUp, win32con.WM_LBUTTONUP)
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self.imgCtl.HookMessage(self.HandleKeys, win32con.WM_KEYUP)
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self.imgCtl.HookMessage(self.OnRMouseUp, win32con.WM_RBUTTONUP)
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if _printAndExit:
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self.timer = timer.set_timer(100, self._startPrint)
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return rc
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def _startPrint(self, tid, sysTime):
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global printing
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timer.kill_timer(self.timer)
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printing = 1
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self.OnDraw(self.GetDC())
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def OnOK(self):
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pass
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def OnClose(self, *msg):
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try:
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self.imgCtl.DestroyWindow()
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self._obj_.OnClose()
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except:
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pass
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def OnDestroy(self, msg):
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try:
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dialog.Dialog.OnDestroy(self, msg)
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del self.circleList
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del self.img
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del self.title
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del self.imgCtl
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except:
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pass
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def OnSetCursor(self, *arg):
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win32api.SetCursor(ImageDisplay.cursor)
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| 247 |
def OnDraw(self, dc, fill=None):
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| 248 |
global printing
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| 249 |
if printing:
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| 250 |
if _printAndExit:
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mag = _printMag or _defaultMag
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else:
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newMag = GetSimpleInput(
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'Print Setup',
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'Enter an image magnification:',
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`_defaultMag`)
|
| 257 |
try:
|
| 258 |
mag = string.atoi(newMag)
|
| 259 |
except:
|
| 260 |
mag = _defaultMag
|
| 261 |
|
| 262 |
dc.CreatePrinterDC()
|
| 263 |
dc.StartDoc(self.img.filename)
|
| 264 |
dc.StartPage()
|
| 265 |
dc.SetMapMode(win32con.MM_ANISOTROPIC)
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| 266 |
dc.SetWindowOrg((0, 0))
|
| 267 |
dc.SetWindowExt((1, 1))
|
| 268 |
dc.SetViewportOrg((0, 0))
|
| 269 |
dc.SetViewportExt((mag, mag))
|
| 270 |
|
| 271 |
metrics = dc.GetTextMetrics()
|
| 272 |
cxChar = metrics['tmAveCharWidth']
|
| 273 |
cyChar = metrics['tmHeight']
|
| 274 |
left, top, right, bottom = (0, 0,
|
| 275 |
self.img.size[0],
|
| 276 |
self.img.size[1])
|
| 277 |
|
| 278 |
dc.TextOut(0, 2*cyChar, self.img.filename)
|
| 279 |
top = top + (7*cyChar)/2
|
| 280 |
dc.MoveTo(left, top)
|
| 281 |
dc.LineTo(right, top)
|
| 282 |
top = top + cyChar
|
| 283 |
dc.SetWindowOrg((0, -top))
|
| 284 |
|
| 285 |
self.imgCtl.pilDisplay.expose(dc.GetHandleOutput())
|
| 286 |
|
| 287 |
height = self.img.size[1]
|
| 288 |
dc.SetTextColor(color['Black'])
|
| 289 |
dc.SetTextAlign(win32con.TA_LEFT|win32con.TA_BOTTOM)
|
| 290 |
|
| 291 |
dc.SetWindowOrg((0, -(top+height+cyChar)))
|
| 292 |
dc.MoveTo(left, 0)
|
| 293 |
dc.LineTo(right, 0)
|
| 294 |
|
| 295 |
x = 0
|
| 296 |
y = (3*cyChar)/2
|
| 297 |
|
| 298 |
dc.SetWindowOrg((0, -top))
|
| 299 |
|
| 300 |
oldPen = dc.SelectObject(pen['Cyan'])
|
| 301 |
oldBrush = dc.SelectObject(brush['Cyan'])
|
| 302 |
dc.SetBkMode(win32con.TRANSPARENT)
|
| 303 |
if not self.mouseDown:
|
| 304 |
dc.SetTextAlign(win32con.TA_CENTER|win32con.TA_BOTTOM)
|
| 305 |
w,h = dc.GetTextExtent('4')
|
| 306 |
|
| 307 |
i = 0
|
| 308 |
for circle in self.circleList:
|
| 309 |
if not self.mouseDown:
|
| 310 |
if self.regionSelected(self.mousexy, circle) or fill == i:
|
| 311 |
if fill:
|
| 312 |
dc.SelectObject(pen['Cyan'])
|
| 313 |
else:
|
| 314 |
dc.SelectObject(pen['Blue'])
|
| 315 |
dc.SelectObject(brush['Blue'])
|
| 316 |
dc.SetTextColor(color['Blue'])
|
| 317 |
else:
|
| 318 |
dc.SelectObject(pen['Cyan'])
|
| 319 |
dc.SelectObject(brush['Cyan'])
|
| 320 |
dc.SetTextColor(color['Cyan'])
|
| 321 |
if fill == i:
|
| 322 |
dc.BeginPath()
|
| 323 |
if fill is None or fill == i:
|
| 324 |
x0, y0, r = circle
|
| 325 |
dc.MoveTo((x0+r, y0))
|
| 326 |
for deg in range(degStep, 360, degStep):
|
| 327 |
x = x0 + int(round(r*cosTable[deg]))
|
| 328 |
y = y0 + int(round(r*sinTable[deg]))
|
| 329 |
dc.LineTo((x,y))
|
| 330 |
dc.LineTo((x0+r, y0))
|
| 331 |
if fill == i:
|
| 332 |
dc.EndPath()
|
| 333 |
dc.StrokeAndFillPath()
|
| 334 |
i = i + 1
|
| 335 |
if not self.mouseDown and fill is None:
|
| 336 |
dc.TextOut(x0+r+w, y0+h/2, `i`)
|
| 337 |
dc.SelectObject(oldBrush)
|
| 338 |
dc.SelectObject(oldPen)
|
| 339 |
|
| 340 |
if printing:
|
| 341 |
dc.EndPage()
|
| 342 |
dc.EndDoc()
|
| 343 |
printing = 0
|
| 344 |
if _printAndExit:
|
| 345 |
win32api.PostQuitMessage(1)
|
| 346 |
|
| 347 |
def OnLMouseDown(self, arg):
|
| 348 |
if not self.drawable:
|
| 349 |
return
|
| 350 |
x,y = xy = self.ScreenToClient(arg[5])
|
| 351 |
if (x<0 or x>=self.size[0] or
|
| 352 |
y<0 or y>=self.size[1]):
|
| 353 |
return
|
| 354 |
self.imgCtl.SetCapture()
|
| 355 |
self.mouseDown = 1
|
| 356 |
self.moving = None
|
| 357 |
if len(self.circleList) < numDrawnCircles:
|
| 358 |
self.circle = [xy[0], xy[1], 0]
|
| 359 |
self.circleList.append(self.circle)
|
| 360 |
self.drawing = 1
|
| 361 |
else:
|
| 362 |
moveNum = None
|
| 363 |
for i in range(len(self.circleList)):
|
| 364 |
if self.regionSelected(self.mousexy, self.circleList[i]):
|
| 365 |
moveNum = i
|
| 366 |
break
|
| 367 |
self.moving = moveNum
|
| 368 |
if self.moving is not None:
|
| 369 |
xy = tuple(self.circleList[self.moving][:2])
|
| 370 |
win32api.SetCursorPos(self.ClientToScreen(xy))
|
| 371 |
self.moveCnt = 4
|
| 372 |
self.xy = xy
|
| 373 |
self.startxy = xy
|
| 374 |
self.mousexy = xy
|
| 375 |
|
| 376 |
def OnMouseMove(self, arg):
|
| 377 |
xy = self.ScreenToClient(arg[5])
|
| 378 |
self.mousexy = xy
|
| 379 |
caption = self.getCaption(xy)
|
| 380 |
if caption is not None:
|
| 381 |
self.SetWindowText(caption)
|
| 382 |
win32api.SetCursor(ImageDisplay.cursor)
|
| 383 |
if self.mouseDown and self.imgCtl.MouseCaptured():
|
| 384 |
if self.drawing:
|
| 385 |
r = hypot(self.startxy[0]-xy[0], self.startxy[1]-xy[1])
|
| 386 |
self.circle[2] = r
|
| 387 |
self.xy = xy
|
| 388 |
elif self.moving is not None:
|
| 389 |
x0, y0, r = self.circleList[self.moving]
|
| 390 |
x0 = x0 + (xy[0] - self.startxy[0])
|
| 391 |
y0 = y0 + (xy[1] - self.startxy[1])
|
| 392 |
minD = 4
|
| 393 |
w = self.size[0] - minD
|
| 394 |
h = self.size[1] - minD
|
| 395 |
if (
|
| 396 |
(x0-r > minD and y0 > minD and
|
| 397 |
x0-r < w and y0 < h)
|
| 398 |
or
|
| 399 |
(x0 > minD and y0+r > minD and
|
| 400 |
x0 < w and y0+r < h)
|
| 401 |
or
|
| 402 |
(x0+r > minD and y0 > minD and
|
| 403 |
x0+r < w and y0 < h)
|
| 404 |
or
|
| 405 |
(x0 > minD and y0-r > minD and
|
| 406 |
x0 < w and y0-r < h)
|
| 407 |
):
|
| 408 |
self.circleList[self.moving][0] = x0
|
| 409 |
self.circleList[self.moving][1] = y0
|
| 410 |
self.startxy = xy
|
| 411 |
if self.drawing or self.moving is not None:
|
| 412 |
self.moveCnt = self.moveCnt - 1
|
| 413 |
if self.moveCnt == 0:
|
| 414 |
self.moveCnt = 2
|
| 415 |
self.InvalidateRect()
|
| 416 |
self.imgCtl.InvalidateRect()
|
| 417 |
self.OnDraw(self.GetDC())
|
| 418 |
|
| 419 |
def OnLMouseUp(self, arg):
|
| 420 |
if not self.drawable:
|
| 421 |
return
|
| 422 |
if self.imgCtl.MouseCaptured():
|
| 423 |
self.imgCtl.ReleaseCapture()
|
| 424 |
self.drawing = 0
|
| 425 |
self.moving = None
|
| 426 |
self.mouseDown = 0
|
| 427 |
self.mousexy = self.ScreenToClient(arg[5])
|
| 428 |
self.InvalidateRect()
|
| 429 |
self.imgCtl.InvalidateRect()
|
| 430 |
self.OnDraw(self.GetDC())
|
| 431 |
|
| 432 |
def OnRMouseUp(self, msg):
|
| 433 |
hWnd = msg[0]
|
| 434 |
menu = win32ui.CreatePopupMenu()
|
| 435 |
|
| 436 |
titleFlags = win32con.MF_STRING|win32con.MF_DISABLED
|
| 437 |
itemFlags = win32con.MF_STRING|win32con.MF_ENABLED
|
| 438 |
menuFlags = (win32con.TPM_LEFTALIGN|win32con.TPM_LEFTBUTTON|
|
| 439 |
win32con.TPM_RETURNCMD|win32con.TPM_NONOTIFY)
|
| 440 |
|
| 441 |
menu.AppendMenu(titleFlags, self.menuID[0], self.menuList[0])
|
| 442 |
menu.AppendMenu(win32con.MF_SEPARATOR)
|
| 443 |
for i in range(1, len(self.menuList)):
|
| 444 |
menu.AppendMenu(itemFlags, self.menuID[i],
|
| 445 |
self.menuList[i])
|
| 446 |
|
| 447 |
try:
|
| 448 |
rc = menu.TrackPopupMenu(msg[5], menuFlags, self)
|
| 449 |
except:
|
| 450 |
return
|
| 451 |
|
| 452 |
if rc == self.menuID[1]:
|
| 453 |
global printing
|
| 454 |
printing = 1
|
| 455 |
self.OnDraw(self.GetDC())
|
| 456 |
|
| 457 |
def HandleKeys(self, msg):
|
| 458 |
if not self.drawable:
|
| 459 |
return
|
| 460 |
if self.mouseDown:
|
| 461 |
return
|
| 462 |
key = msg[2]
|
| 463 |
if (key == win32con.VK_DELETE or
|
| 464 |
key == win32con.VK_BACK):
|
| 465 |
found = 0
|
| 466 |
i = 0
|
| 467 |
for circle in self.circleList:
|
| 468 |
if self.regionSelected(self.mousexy, circle):
|
| 469 |
found = 1
|
| 470 |
break
|
| 471 |
i = i + 1
|
| 472 |
if found:
|
| 473 |
del self.circleList[i]
|
| 474 |
self.InvalidateRect()
|
| 475 |
self.imgCtl.InvalidateRect()
|
| 476 |
self.timer = timer.set_timer(100, self.refresh)
|
| 477 |
|
| 478 |
def refresh(self, *args):
|
| 479 |
timer.kill_timer(self.timer)
|
| 480 |
self.OnDraw(self.GetDC())
|
| 481 |
|
| 482 |
def getCaption(self, xy):
|
| 483 |
try:
|
| 484 |
return '%s: (%3d,%3d) = %s' % (self.title, xy[0], xy[1],
|
| 485 |
`self.img.getpixel(xy)`)
|
| 486 |
except:
|
| 487 |
return None
|
| 488 |
|
| 489 |
def regionSelected(self, pnt, region):
|
| 490 |
return self.drawable and (hypot(pnt[0]-region[0],
|
| 491 |
pnt[1]-region[1])
|
| 492 |
< (region[2]+4))
|
| 493 |
|
| 494 |
|
| 495 |
def GetSimpleInput(title, prompt, defValue=''):
|
| 496 |
dlg = SimpleInput(title, prompt, defValue)
|
| 497 |
if dlg.DoModal() <> win32con.IDOK:
|
| 498 |
ret = dlg.defValue
|
| 499 |
else:
|
| 500 |
ret = dlg['result']
|
| 501 |
return ret
|
| 502 |
|
| 503 |
|
| 504 |
class SimpleInput(dialog.Dialog):
|
| 505 |
|
| 506 |
def __init__(self, title, prompt, defValue):
|
| 507 |
self.title = title
|
| 508 |
self.defValue = defValue
|
| 509 |
dialog.Dialog.__init__(self, win32ui.IDD_SIMPLE_INPUT)
|
| 510 |
self.AddDDX(win32ui.IDC_EDIT1, 'result')
|
| 511 |
self.AddDDX(win32ui.IDC_PROMPT1, 'prompt')
|
| 512 |
self._obj_.data['result'] = defValue
|
| 513 |
self._obj_.data['prompt'] = prompt
|
| 514 |
|
| 515 |
def OnInitDialog(self):
|
| 516 |
self.SetWindowText(self.title)
|
| 517 |
self._obj_.UpdateData(0)
|
| 518 |
return dialog.Dialog.OnInitDialog(self)
|
| 519 |
|
| 520 |
|
| 521 |
class PrintDialogApp(dlgappcore.DialogApp):
|
| 522 |
def __init__(self):
|
| 523 |
if len(sys.argv) > 1:
|
| 524 |
import getopt
|
| 525 |
opts, args = getopt.getopt(sys.argv[1:], 'pm:')
|
| 526 |
if len(args):
|
| 527 |
img = args[0]
|
| 528 |
for o, v in opts:
|
| 529 |
if o == '-p':
|
| 530 |
global _printAndExit
|
| 531 |
_printAndExit = 1
|
| 532 |
elif o == '-m':
|
| 533 |
global _printMag
|
| 534 |
_printMag = string.atoi(v)
|
| 535 |
else:
|
| 536 |
flags = (~win32con.OFN_ALLOWMULTISELECT &
|
| 537 |
(win32con.OFN_FILEMUSTEXIST|win32con.OFN_EXPLORER))
|
| 538 |
dlg = win32ui.CreateFileDialog(1, None, None, flags,
|
| 539 |
'Image File (*.*)|*.*||')
|
| 540 |
dlg.SetOFNTitle('Image to Display')
|
| 541 |
if dlg.DoModal() == win32con.IDOK:
|
| 542 |
img = dlg.GetPathNames()[0]
|
| 543 |
else:
|
| 544 |
return
|
| 545 |
dlgappcore.DialogApp.__init__(self)
|
| 546 |
self.image = Image.open(img)
|
| 547 |
|
| 548 |
def CreateDialog(self):
|
| 549 |
return ImageDisplay(self.image, (100,100), 1)
|
| 550 |
|
| 551 |
|
| 552 |
def displayImage(img=None):
|
| 553 |
runIt(script=__file__, img=img)
|
| 554 |
|
| 555 |
|
| 556 |
def printImage(img, mag):
|
| 557 |
global _printAndExit
|
| 558 |
runIt(script=__file__, img=img, opts='-p -m %d' % mag)
|
| 559 |
|
| 560 |
|
| 561 |
def runIt(script=None, img=None, opts=None):
|
| 562 |
parent = win32ui.GetMainFrame().GetSafeHwnd()
|
| 563 |
if script is None:
|
| 564 |
args = '/app "%s"' % sys.argv[0]
|
| 565 |
else:
|
| 566 |
args = '/app "%s"' % script
|
| 567 |
if opts is not None:
|
| 568 |
args = args + ' %s' % opts
|
| 569 |
if img is not None:
|
| 570 |
args = args + ' "%s"' % img
|
| 571 |
win32api.ShellExecute(parent, None, 'pythonwin.exe', args, None, 1)
|
| 572 |
|
| 573 |
|
| 574 |
app.AppBuilder = PrintDialogApp
|
| 575 |
|
| 576 |
|
| 577 |
if __name__== '__main__':
|
| 578 |
runIt()
|
| 579 |
|
