def testFontFileFailures(self):
     "Tests TTFontFile constructor error checks"
     self.assertRaises(TTFError, TTFontFile, "nonexistent file")
     self.assertRaises(TTFError, TTFontFile, getBytesIO(b""))
     self.assertRaises(TTFError, TTFontFile, getBytesIO(b"invalid signature"))
     self.assertRaises(TTFError, TTFontFile, getBytesIO(b"OTTO - OpenType not supported yet"))
     self.assertRaises(TTFError, TTFontFile, getBytesIO(b"\0\1\0\0"))

 def testFontFileChecksum(self):
     "Tests TTFontFile and TTF parsing code"
     F = TTFOpenFile("Vera.ttf")[1].read()
     TTFontFile(getBytesIO(F), validate=1) # should not fail
     F1 = F[:12345] + b"\xFF" + F[12346:] # change one byte
     self.assertRaises(TTFError, TTFontFile, getBytesIO(F1), validate=1)
     F1 = F[:8] + b"\xFF" + F[9:] # change one byte
     self.assertRaises(TTFError, TTFontFile, getBytesIO(F1), validate=1)

 def testFontMaker(self):
     "Tests TTFontMaker class"
     ttf = TTFontMaker()
     ttf.add("ABCD", b"xyzzy")
     ttf.add("QUUX", b"123")
     ttf.add("head", b"12345678xxxx")
     stm = ttf.makeStream()
     ttf = TTFontParser(getBytesIO(stm), 0)
     self.assertEquals(ttf.get_table("ABCD"), b"xyzzy")
     self.assertEquals(ttf.get_table("QUUX"), b"123")

def _AsciiHexEncode(input):
    """Encodes input using ASCII-Hex coding.

    This is a verbose encoding used for binary data within
    a PDF file.  One byte binary becomes two bytes of ASCII.
    Helper function used by images."""
    if isUnicode(input):
        input = input.encode('utf-8')
    output = getBytesIO()
    output.write(binascii.b2a_hex(input))
    output.write(b'>')
    return output.getvalue()

def trySomeColors(C,enforceColorSpace=None):
    from reportlab.lib.utils import getBytesIO
    out=getBytesIO()
    canv = canvas.Canvas(out,enforceColorSpace=enforceColorSpace)
    canv.setFont('Helvetica',10)
    x = 0
    y = 0
    w,h = canv._pagesize
    for c in C:
        if y+10>h:
            y = 0
            x += 10
        canv.setFillColor(c)
        canv.rect(x,y,10,10,fill=1,stroke=0)
        y += 10
    canv.showPage()
    canv.save()

def drawToString(d,
                showBoundary=rl_config.showBoundary,
                dviPreview='',
                title='Diagra EPS',
                company='ReportLab',
                dept='',
                preview=0):
    "Outputs the EPS to a string in memory"
    f = getBytesIO()
    drawToFile(d, f,
                dviPreview=dviPreview,
                title = title,
                dept = dept,
                company = company,
                preview = preview,
                showBoundary=showBoundary)
    return f.getvalue()

    def makeStream(self):
        "Finishes the generation and returns the TTF file as a string"
        stm = getBytesIO()
        write = stm.write

        numTables = len(self.tables)
        searchRange = 1
        entrySelector = 0
        while searchRange * 2 <= numTables:
            searchRange = searchRange * 2
            entrySelector = entrySelector + 1
        searchRange = searchRange * 16
        rangeShift = numTables * 16 - searchRange

        # Header
        write(pack(">lHHHH", 0x00010000, numTables, searchRange,
                                 entrySelector, rangeShift))

        # Table directory
        tables = list(self.tables.items())
        tables.sort()     # XXX is this the correct order?
        offset = 12 + numTables * 16
        for tag, data in tables:
            if tag == 'head':
                head_start = offset
            checksum = calcChecksum(data)
            if isUnicodeType(tag):
                tag = tag.encode('utf-8')
            write(tag)
            write(pack(">LLL", checksum, offset, len(data)))
            paddedLength = (len(data)+3)&~3
            offset = offset + paddedLength

        # Table data
        for tag, data in tables:
            data += b"\0\0\0"
            write(data[:len(data)&~3])

        checksum = calcChecksum(stm.getvalue())
        checksum = add32(0xB1B0AFBA, -checksum)
        stm.seek(head_start + 8)
        write(pack('>L', checksum))

        return stm.getvalue()

def _preview(d,preview):
    '''create a device dependent preview image from drawing d'''
    from reportlab.graphics import renderPM
    if isinstance(preview,(int,float)):
        assert preview>0, "negative scaling is forbidden"
        g = d
        d = Drawing(g.width*preview, g.height*preview)
        g.transform = (preview,0,0,preview,0,0) #scale so it fits
        d.add(g)
    pilf = getBytesIO()
    transparent = getattr(g,'preview_transparent',None) or rl_config.eps_preview_transparent
    kwds = dict(fmt='TIFF')
    if transparent:
        configPIL = {}
        bg = configPIL['transparent'] = toColor(transparent)
        kwds['configPIL'] = configPIL
        kwds['bg'] = bg.int_rgb()
    renderPM.drawToFile(d,pilf,**kwds)
    return pilf.getvalue()

    def makeStream(self):
        "Finishes the generation and returns the TTF file as a string"
        stm = getBytesIO()
        write = stm.write

        tables = self.tables
        numTables = len(tables)
        searchRange = 1
        entrySelector = 0
        while searchRange * 2 <= numTables:
            searchRange = searchRange * 2
            entrySelector = entrySelector + 1
        searchRange = searchRange * 16
        rangeShift = numTables * 16 - searchRange

        # Header
        write(pack(">lHHHH", 0x00010000, numTables, searchRange,
                                 entrySelector, rangeShift))

        # Table directory
        offset = 12 + numTables * 16
        wStr = (lambda x:write(bytes(tag,'latin1'))) if isPy3 else write
        tables_items = list(sorted(tables.items()))
        for tag, data in tables_items:
            if tag == 'head':
                head_start = offset
            checksum = calcChecksum(data)
            wStr(tag)
            write(pack(">LLL", checksum, offset, len(data)))
            paddedLength = (len(data)+3)&~3
            offset = offset + paddedLength

        # Table data
        for tag, data in tables_items:
            data += b"\0\0\0"
            write(data[:len(data)&~3])

        checksum = calcChecksum(stm.getvalue())
        checksum = add32(0xB1B0AFBA, -checksum)
        stm.seek(head_start + 8)
        write(pack('>L', checksum))

        return stm.getvalue()

def encryptPdfInMemory(inputPDF,
                  userPassword, ownerPassword=None,
                  canPrint=1, canModify=1, canCopy=1, canAnnotate=1,
                       strength=40):
    """accepts a PDF file 'as a byte array in memory'; return encrypted one.

    This is a high level convenience and does not touch the hard disk in any way.
    If you are encrypting the same file over and over again, it's better to use
    pageCatcher and cache the results."""

    try:
        from rlextra.pageCatcher.pageCatcher import storeFormsInMemory, restoreFormsInMemory
    except ImportError:
        raise ImportError('''reportlab.lib.pdfencrypt.encryptPdfInMemory failed because rlextra cannot be imported.
See http://developer.reportlab.com''')

    (bboxInfo, pickledForms) = storeFormsInMemory(inputPDF, all=1, BBoxes=1)
    names = list(bboxInfo.keys())

    firstPageSize = bboxInfo['PageForms0'][2:]

    #now make a new PDF document
    buf = getBytesIO()
    canv = Canvas(buf, pagesize=firstPageSize)

    # set a standard ID while debugging
    if CLOBBERID:
        canv._doc._ID = "[(xxxxxxxxxxxxxxxx)(xxxxxxxxxxxxxxxx)]"
    encryptCanvas(canv,
                  userPassword, ownerPassword,
                  canPrint, canModify, canCopy, canAnnotate,
                  strength=strength)

    formNames = restoreFormsInMemory(pickledForms, canv)
    for formName in formNames:
        #need to extract page size in future
        canv.doForm(formName)
        canv.showPage()
    canv.save()
    return buf.getvalue()

    def testSubsetting(self):
        "Tests TTFontFile and TTF parsing code"
        ttf = TTFontFile("Vera.ttf")
        subset = ttf.makeSubset([0x41, 0x42])
        subset = TTFontFile(getBytesIO(subset), 0)
        for tag in ('cmap', 'head', 'hhea', 'hmtx', 'maxp', 'name', 'OS/2',
                    'post', 'cvt ', 'fpgm', 'glyf', 'loca', 'prep'):
            self.assert_(subset.get_table(tag))

        subset.seek_table('loca')
        for n in range(4):
            pos = subset.read_ushort()    # this is actually offset / 2
            self.failIf(pos % 2 != 0, "glyph %d at +%d should be long aligned" % (n, pos * 2))

        self.assertEquals(subset.name, b"BitstreamVeraSans-Roman")
        self.assertEquals(subset.flags, FF_SYMBOLIC)
        self.assertEquals(subset.italicAngle, 0.0)
        self.assertNear(subset.ascent,759.765625)
        self.assertNear(subset.descent,-240.234375)
        self.assertEquals(subset.capHeight, 759.765625)
        self.assertNear(subset.bbox, [-183.10546875, -235.83984375, 1287.109375, 928.22265625])
        self.assertEquals(subset.stemV, 87)

    def _showWidgetProperties(self, widget):
        """Dump all properties of a widget."""

        props = widget.getProperties()
        keys = props.keys()
        keys.sort()
        lines = []
        for key in keys:
            value = props[key]

            f = getBytesIO()
            pprint.pprint(value, f)
            value = f.getvalue()[:-1]
            valueLines = value.split('\n')
            for i in range(1, len(valueLines)):
                valueLines[i] = ' '*(len(key)+3) + valueLines[i]
            value = '\n'.join(valueLines)

            lines.append('%s = %s' % (key, value))

        text = '\n'.join(lines)
        self.story.append(Paragraph("<i>Properties of Example Widget</i>", self.bt))
        self.story.append(Paragraph("", self.bt))
        self.story.append(Preformatted(text, self.code))

def drawToString(d, msg="", showBoundary=rl_config._unset_,autoSize=1):
    "Returns a PDF as a string in memory, without touching the disk"
    s = getBytesIO()
    drawToFile(d, s, msg=msg, showBoundary=showBoundary,autoSize=autoSize)
    return s.getvalue()

def drawToString(d, showBoundary=rl_config.showBoundary):
    "Returns a PS as a string in memory, without touching the disk"
    s = getBytesIO()
    drawToFile(d, s, showBoundary=showBoundary)
    return s.getvalue()

def drawToString(d,fmt='GIF', dpi=72, bg=0xffffff, configPIL=None, showBoundary=rl_config._unset_):
    s = getBytesIO()
    drawToFile(d,s,fmt=fmt, dpi=dpi, bg=bg, configPIL=configPIL)
    return s.getvalue()

 def saveToString(self,fmt='GIF'):
     s = getBytesIO()
     self.saveToFile(s,fmt=fmt)
     return s.getvalue()

 def test10(self):
     "test open and read of a simple relative file"
     from reportlab.lib.utils import open_and_read, getBytesIO
     b = getBytesIO(_rel_open_and_read('../docs/images/Edit_Prefs.gif'))
     b = open_and_read(b)

    def _drawImageLevel1(self, image, x1, y1, x2=None,y2=None):
        # Postscript Level1 version available for fallback mode when Level2 doesn't work
        """drawImage(self,image,x1,y1,x2=None,y2=None) : If x2 and y2 are ommitted, they are
        calculated from image size. (x1,y1) is upper left of image, (x2,y2) is lower right of
        image in piddle coordinates."""
        # For now let's start with 24 bit RGB images (following piddlePDF again)
        component_depth = 8
        myimage = image.convert('RGB')
        imgwidth, imgheight = myimage.size
        if not x2:
            x2 = imgwidth + x1
        if not y2:
            y2 = y1 + imgheight
        drawwidth = x2 - x1
        drawheight = y2 - y1
        #print 'Image size (%d, %d); Draw size (%d, %d)' % (imgwidth, imgheight, drawwidth, drawheight)
        # now I need to tell postscript how big image is

        # "image operators assume that they receive sample data from
        # their data source in x-axis major index order.  The coordinate
        # of the lower-left corner of the first sample is (0,0), of the
        # second (1,0) and so on" -PS2 ref manual p. 215
        #
        # The ImageMatrix maps unit squre of user space to boundary of the source image
        #

        # The CurrentTransformationMatrix (CTM) maps the unit square of
        # user space to the rect...on the page that is to receive the
        # image. A common ImageMatrix is [width 0 0 -height 0 height]
        # (for a left to right, top to bottom image )

        # first let's map the user coordinates start at offset x1,y1 on page

        self.code.extend([
            'gsave',
            '%s %s translate' % (x1,-y1 - drawheight), # need to start are lower left of image
            '%s %s scale' % (drawwidth,drawheight),
            '/scanline %d 3 mul string def' % imgwidth  # scanline by multiples of image width
            ])

        # now push the dimensions and depth info onto the stack
        # and push the ImageMatrix to map the source to the target rectangle (see above)
        # finally specify source (PS2 pp. 225 ) and by exmample
        self.code.extend([
            '%s %s %s' % (imgwidth, imgheight, component_depth),
            '[%s %s %s %s %s %s]' % (imgwidth, 0, 0, -imgheight, 0, imgheight),
            '{ currentfile scanline readhexstring pop } false 3',
            'colorimage '
            ])

        # data source output--now we just need to deliver a hex encode
        # series of lines of the right overall size can follow
        # piddlePDF again
        rawimage = myimage.tostring()
        hex_encoded = self._AsciiHexEncode(rawimage)

        # write in blocks of 78 chars per line
        outstream = getBytesIO(hex_encoded)

        dataline = outstream.read(78)
        while dataline != "":
            self.code_append(dataline)
            dataline= outstream.read(78)
        self.code_append('% end of image data') # for clarity
        self.code_append('grestore') # return coordinates to normal

 def _AsciiHexEncode(self, input):  # also based on piddlePDF
     "Helper function used by images"
     output = getBytesIO()
     for char in input:
         output.write('%02x' % ord(char))
     return output.getvalue()

    def _drawImageLevel2(self, image, x1,y1, x2=None,y2=None): # Postscript Level2 version
        '''At present we're handling only PIL'''
        ### what sort of image are we to draw
        if image.mode=='L' :
            imBitsPerComponent = 8
            imNumComponents = 1
            myimage = image
        elif image.mode == '1':
            myimage = image.convert('L')
            imNumComponents = 1
            myimage = image
        else :
            myimage = image.convert('RGB')
            imNumComponents = 3
            imBitsPerComponent = 8

        imwidth, imheight = myimage.size
        if not x2:
            x2 = imwidth + x1
        if not y2:
            y2 = y1 + imheight
        drawwidth = x2 - x1
        drawheight = y2 - y1
        self.code.extend([
            'gsave',
            '%s %s translate' % (x1,-y1 - drawheight), # need to start are lower left of image
            '%s %s scale' % (drawwidth,drawheight)])

        if imNumComponents == 3 :
            self.code_append('/DeviceRGB setcolorspace')
        elif imNumComponents == 1 :
            self.code_append('/DeviceGray setcolorspace')
        # create the image dictionary
        self.code_append("""
<<
/ImageType 1
/Width %d /Height %d  %% dimensions of source image
/BitsPerComponent %d""" % (imwidth, imheight, imBitsPerComponent) )

        if imNumComponents == 1:
            self.code_append('/Decode [0 1]')
        if imNumComponents == 3:
            self.code_append('/Decode [0 1 0 1 0 1]  %% decode color values normally')

        self.code.extend([  '/ImageMatrix [%s 0 0 %s 0 %s]' % (imwidth, -imheight, imheight),
                            '/DataSource currentfile /ASCIIHexDecode filter',
                            '>> % End image dictionary',
                            'image'])
        # after image operator just need to dump image dat to file as hexstring
        rawimage = myimage.tostring()
        hex_encoded = self._AsciiHexEncode(rawimage)

        # write in blocks of 78 chars per line
        outstream = getBytesIO(hex_encoded)

        dataline = outstream.read(78)
        while dataline != "":
            self.code_append(dataline)
            dataline= outstream.read(78)
        self.code_append('> % end of image data') # > is EOD for hex encoded filterfor clarity
        self.code_append('grestore') # return coordinates to normal