16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruzfrom StringIO import StringIO

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruzimport math

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruzimport inkex

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruzclass hpglDecoder:

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński def __init__(self, hpglString, options):

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński ''' options:

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński self.hpglString = hpglString

ee447ac6bc305fa06a1b8fb7e98a657a3bcfe097Josh Andler self.options = options

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz self.scaleX = options.resolutionX / 90.0 # dots/inch to dots/pixels

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński self.scaleY = options.resolutionY / 90.0 # dots/inch to dots/pixels

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz self.warning = ''

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz self.textMovements = _("Movements")

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński self.textPenNumber = _("Pen #")

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński def getSvg(self):

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński # prepare document

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński self.doc = inkex.etree.parse(StringIO('<svg xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" width="%s" height="%s"></svg>' %

16e7cf17a1bc8bb0d79dfa6adc4f75b843fb6d16Krzysztof Kosiński (self.options.docWidth, self.options.docHeight)))

9a8c99c1f18c1d69fee4fe12c455121abf6de6f3Krzysztof Kosiński actualLayer = 0

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz self.layers = {}

58c5902626b1ba0feb295fab124de3160c73fbeaKrzysztof Kosiński if self.options.showMovements:

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz self.layers[0] = inkex.etree.SubElement(self.doc.getroot(), 'g', {inkex.addNS('groupmode', 'inkscape'): 'layer', inkex.addNS('label', 'inkscape'): self.textMovements})

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński # parse paths

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński hpglData = self.hpglString.split(';')

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński if len(hpglData) < 3:

7128efb0d57297be0fbe4ef91c30fff5d1f94006Jon A. Cruz raise Exception('NO_HPGL_DATA')

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński oldCoordinates = (0.0, self.options.docHeight)

0d68d82e47abab250c99dd534da2e2d26b697b2dKrzysztof Kosiński path = ''

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński for i, command in enumerate(hpglData):

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński if command.strip() != '':

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński if command[:2] == 'IN':

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński # if Initialize command, ignore

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński pass

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński elif command[:2] == 'SP':

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński # if Select Pen command

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński actualLayer = command[2:]

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński self.createLayer(actualLayer)

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński elif command[:2] == 'PU':

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński # if Pen Up command

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński if ' L ' in path:

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński self.addPathToLayer(path, actualLayer)

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński if self.options.showMovements and i != len(hpglData) - 1:

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński path = 'M %f,%f' % oldCoordinates

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński path += ' L %f,%f' % self.getParameters(command[2:])

16a8c7d5e433b176636a4a1260c42ea43932110bKrzysztof Kosiński self.addPathToLayer(path, 0)

a4030d5ca449e7e384bc699cd249ee704faaeab0Chris Morgan path = 'M %f,%f' % self.getParameters(command[2:])

oldCoordinates = self.getParameters(command[2:])

elif command[:2] == 'PD':

# if Pen Down command

parameterString = command[2:]

if parameterString.strip() != '':

parameterString = parameterString.replace(';', '').strip()

parameter = parameterString.split(',')

oldCoordinates = (float(parameter[-2]) / self.scaleX, self.options.docHeight - float(parameter[-1]) / self.scaleX)

for i, param in enumerate(parameter):

if i % 2 == 0:

parameter[i] = str(float(param) / self.scaleX)

else:

parameter[i] = str(self.options.docHeight - float(param) / self.scaleY)

parameterString = ','.join(parameter)

path += ' L %s' % parameterString

else:

self.warning = 'UNKNOWN_COMMANDS'

if ' L ' in path:

self.addPathToLayer(path, actualLayer)

return (self.doc, self.warning)

def createLayer(self, layerNumber):

self.layers[layerNumber] = inkex.etree.SubElement(self.doc.getroot(), 'g',

{inkex.addNS('groupmode', 'inkscape'): 'layer', inkex.addNS('label', 'inkscape'): self.textPenNumber + layerNumber})

def addPathToLayer(self, path, layerNumber):

lineColor = '000000'

if layerNumber == 0:

lineColor = 'ff0000'

inkex.etree.SubElement(self.layers[layerNumber], 'path', {'d': path, 'style': 'stroke:#' + lineColor + '; stroke-width:0.4; fill:none;'})

def getParameters(self, parameterString):

# process coordinates

if parameterString.strip() == '':

return []

# remove command delimiter

parameterString = parameterString.replace(';', '').strip()

# split parameter

parameter = parameterString.split(',')

# convert to svg coordinate system and return

return (float(parameter[0]) / self.scaleX, self.options.docHeight - float(parameter[1]) / self.scaleY)