#------------------------------------------------------------------------------
#
#   PyGUI - Win32 API - Printing
#
#------------------------------------------------------------------------------

from ctypes import *
from ctypes.wintypes import *

comdlg32 = windll.comdlg32
gdi32 = windll.gdi32

PD_ALLPAGES = 0x0
PD_RETURNDC = 0x100

LOGPIXELSX = 88
LOGPIXELSY = 90
PHYSICALOFFSETX = 112
PHYSICALOFFSETY = 113

LPDWORD = POINTER(DWORD)
LPHANDLE = POINTER(HANDLE)
LPPOINT = POINTER(POINT)
LPPRINTHOOKPROC = c_void_p
LPSETUPHOOKPROC = c_void_p
ABORTPROC = CFUNCTYPE(c_int, HDC, c_int)
LPPRINTER_DEFAULTS = c_void_p

class PRINTDLG(Structure):

    _pack_ = 2
    _fields_ = [
        ('lStructSize', DWORD),
        ('hwndOwner', HWND),
        ('hDevMode', HGLOBAL),
        ('hDevNames', HGLOBAL),
        ('hDC', HDC),
        ('Flags', DWORD),
        ('nFromPage', WORD),
        ('nToPage', WORD),
        ('nMinPage', WORD),
        ('nMaxPage', WORD),
        ('nCopies', WORD),
        ('hInstance', HINSTANCE),
        ('lCustData', LPARAM),
        ('lpfnPrintHook', LPPRINTHOOKPROC),
        ('lpfnSetupHook', LPSETUPHOOKPROC),
        ('lpPrintTemplateName', LPCSTR),
        ('lpSetupTemplateName', LPCSTR),
        ('hPrintTemplate', HGLOBAL),
        ('hSetupTemplate', HGLOBAL),
    ]
    
    def __init__(self):
        self.lStructSize = sizeof(PRINTDLG)

class DOCINFO(Structure):

    _fields_ = [
        ('cbSize', c_int),
        ('lpszDocName', LPCSTR),
        ('lpszOutput', LPCSTR),
        ('lpszDatatype', LPCSTR),
        ('fwType', DWORD),
    ]
    
    def __init__(self):
        self.cbSize = sizeof(DOCINFO)

class FORM_INFO_1_W(Structure):

    _fields_ = [
        ('Flags', DWORD),
        ('pName', LPWSTR),
        ('Size', SIZEL),
        ('ImageableArea', RECTL),
    ]

_PrintDlg = comdlg32.PrintDlgA
_PrintDlg.argtypes = [POINTER(PRINTDLG)]

SetAbortProc = gdi32.SetAbortProc
SetAbortProc.argtypes = [HDC, ABORTPROC]

StartDoc = gdi32.StartDocA
StartDoc.argtypes = [HDC, POINTER(DOCINFO)]

StartPage = gdi32.StartPage
StartPage.argtypes = [HDC]

EndPage = gdi32.EndPage
EndPage.argtypes = [HDC]

EndDoc = gdi32.EndDoc
EndDoc.argtypes = [HDC]

DeleteDC = gdi32.DeleteDC
DeleteDC.argtypes = [HDC]

CommDlgExtendedError = comdlg32.CommDlgExtendedError
CommDlgExtendedError.argtypes = []

def PrintDlg(pd):
    pd.nFromPage = pd.nMinPage
    pd.nToPage = pd.nMaxPage
    pd.Flags = PD_RETURNDC
    #if pd.nMaxPage > pd.nMinPage:
    #	pd.Flags |= PD_PAGENUMS
    result = _PrintDlg(pd)
    if result == 0:
        err = CommDlgExtendedError()
        if err <> 0:
            raise EnvironmentError("Common Dialog error %s" % err)
    return bool(result)

def GetPrintingOffset(hdc):
    dpix = gdi32.GetDeviceCaps(hdc, LOGPIXELSX)
    dpiy = gdi32.GetDeviceCaps(hdc, LOGPIXELSY)
    offx = gdi32.GetDeviceCaps(hdc, PHYSICALOFFSETX)
    offy = gdi32.GetDeviceCaps(hdc, PHYSICALOFFSETY)
    return 72.0 * offx / dpix, 72.0 * offy / dpiy

def abort_proc(hdc, err):
    return printing_aborted

def install_abort_proc(hdc):
    global printing_aborted
    printing_aborted = False
    SetAbortProc(hdc, ABORTPROC(abort_proc))