import AppDrawing
import FrameworkUtilities
import Utilities
import DataProvidersAndConsumers

from Quartz import *
import Quartz

import sys

def createNewPDFRefFromPasteBoard():
    # Create a reference to the PDF data on the pasteboard.
    # The implementation of myCreatePDFDataFromPasteBoard depends
    # on the application framework you are using for your application.
    # 
    # myCreatePDFDataFromPasteBoard creates a reference that is owned
    # by the calling application.
    pasteBoardData = FrameworkUtilities.myCreatePDFDataFromPasteBoard()
	
    if pasteBoardData is None:
        print >>sys.stderr, "There is no PDF data on pasteboard!"
        return None
    
    # Create a data provider from the pasteboard data.
    dataProvider = myCGDataProviderCreateWithCFData(pasteBoardData)
    # Release the pasteboard data since the data provider retains
    # it and this code owns a reference but no longer requires it.
    del pasteBoardData
	
    if dataProvider is None:
        print >>sys.stderr, "Couldn't create data provider."
        return None

    pasteBoardPDFDocument = CGPDFDocumentCreateWithProvider(dataProvider)
    # Release the data provider now that the code is done with it.
    del dataProvider

    if pasteBoardPDFDocument is None:
        print >>sys.stderr, "Couldn't create PDF document from pasteboard data provider."
        return None
    return pasteBoardPDFDocument

_pdfDoc = None
def getPasteBoardPDFDoc(reset):
    global _pdfDoc
    if reset:
        # Release any existing document.
        _pdfDoc = createNewPDFRefFromPasteBoard()
    else:
        # If there isn't already one, create it fresh.
        if _pdfDoc is None:
            _pdfDoc = createNewPDFRefFromPasteBoard()
    return _pdfDoc


def drawPasteBoardPDF(context):
    pdfDoc = getPasteBoardPDFDoc(False)   # Obtain the existing one.
    if pdfDoc is None:
        print >>sys.stderr, "Quartz couldn't create CGPDFDocumentRef from pasteboard."
        return

    # The media box is the bounding box of the PDF document. 
    pdfRect = CGPDFDocumentGetMediaBox(pdfDoc , 1);   # page 1
    # Make the destination rect origin at the Quartz origin. 
    pdfRect.origin.x = pdfRect.origin.y = 0.;	
    CGContextDrawPDFDocument(context, pdfRect, pdfDoc, 1);  # page 1

def cfDataCreatePDFDocumentFromCommand( command):
    # Media rect for the drawing. In a real application this
    # should be the bounding rectangle of the graphics
    # that will be the PDF content. 
    mediaRect = CGRectMake(0, 0, 612, 792)

    # Create a dictionary to hold the optional information describing the PDF data.
    dict = {}

    # Add the creator and title information to the PDF content.
    dict[kCGPDFContextTitle] = "Pasted From Sample Quartz Application"
    dict[kCGPDFContextCreator] = "Sample Quartz Application"

    # Create a mutable CFData object with unlimited capacity.
    data = CFDataCreateMutable(None, 0)
    if data is None:
        print >>sys.stderr, "Couldn't make CFData!"
        return None

    # Create the data consumer to capture the PDF data.
    consumer = DataProvidersAndConsumers.myCGDataConsumerCreateWithCFData(data)
    if consumer is None:
        print >>sys.stderr, "Couldn't create data consumer!"
        return None

    pdfContext, mediaRect = CGPDFContextCreate(consumer, None, dict)
    del consumer
    del dict
    
    if pdfContext is None:
        print >>sys.stderr, "Couldn't create pdf context!"
        return None
    
    mediaRect = CGContextBeginPage(pdfContext)
    if 1:
        CGContextSaveGState(pdfContext)
        if 1:
            CGContextClipToRect(pdfContext, mediaRect)
            AppDrawing.DispatchDrawing(pdfContext, command)
        CGContextRestoreGState(pdfContext)
    CGContextEndPage(pdfContext)
    
    return data

def MakePDFDocument(url, exportInfo):
    # Use this as the media box for the document.
    # In a real application this should be the bounding
    # rectangle of the graphics that will be the PDF content. 
    mediaRect = CGRectMake(0, 0, 612, 792)

    info = {
        # Add the title information for this document.
        kCGPDFContextTitle: "BasicDrawing Sample Graphics",

        # Add the author information for this document. This is typically  
        # the user creating the document.
        kCGPDFContextAuthor: "David Gelphman and Bunny Laden",

        # The creator is the application creating the document.
        kCGPDFContextCreator: "BasicDrawing Application",
    }

    if 0:
        # Before using the kCGPDFContextCropBox key, check to ensure that it
        # is available.
        if hasattr(Quartz, 'kCFPDFContextCropBox'):
            # Prepare the crop box entry. Use this rectangle as the crop box for
            # this example.

            # XXX:fixme: need to encode as CFData!!!
            info[kCGPDFContextCropBox] = CGRectMake(100, 100, 200, 200)
    
    if url is not None:
        pdfContext = CGPDFContextCreateWithURL(url, mediaRect, info)
        if pdfContext is not None:
            CGContextBeginPage(pdfContext, mediaRect)
            if 1:
                CGContextSaveGState(pdfContext)
                if 1:
                    CGContextClipToRect(pdfContext, mediaRect)
                    AppDrawing.DispatchDrawing(pdfContext, exportInfo.command)
                CGContextRestoreGState(pdfContext)
            CGContextEndPage(pdfContext)
            del pdfContext
        else:
            print >>sys.stderr, "Can't create PDF document!"