78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
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import subprocess
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import tempfile
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import os
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import cairo
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from boxes import svgutil
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class Formats:
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pstoedit = "/usr/bin/pstoedit"
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formats = {
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"svg" : None,
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"ps" : None,
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"dxf" : "-flat 0.1 -f dxf:-mm".split(),
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"gcode" : "-f gcode".split(),
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"plt" : "-f plot-hpgl".split(),
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"ai" : "-f ps2ai".split(),
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"pdf" : "-f pdf".split(),
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}
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http_headers = {
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"svg" : [('Content-type', 'image/svg+xml; charset=utf-8')],
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"ps" : [('Content-type', 'application/postscript')],
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"dxf" : [('Content-type', 'image/vnd.dxf')],
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"plt" : [('Content-type', ' application/vnd.hp-hpgl')],
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"gcode" : [('Content-type', 'text/plain; charset=utf-8')],
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# "" : [('Content-type', '')],
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}
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def __init__(self):
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pass
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def getFormats(self):
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if os.path.isfile(self.pstoedit):
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return sorted(self.formats.keys())
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else:
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return ['svg', 'ps']
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def getSurface(self, fmt, filename):
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width = height = 10000 # mm
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if fmt == "svg":
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surface = cairo.SVGSurface(filename, width, height)
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mm2pt = 1.0
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else:
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mm2pt = 72 / 25.4
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width *= mm2pt
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height *= mm2pt #3.543307
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surface = cairo.PSSurface(filename, width, height)
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ctx = cairo.Context(surface)
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ctx.translate(0, height)
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ctx.scale(mm2pt, -mm2pt)
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ctx.set_source_rgb(0.0, 0.0, 0.0)
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return surface, ctx
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def convert(self, filename, fmt):
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if fmt == 'svg':
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svg = svgutil.SVGFile(filename)
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svg.getEnvelope()
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svg.rewriteViewPort()
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elif fmt == "ps":
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pass
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else:
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fd, tmpfile = tempfile.mkstemp()
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cmd = [self.pstoedit] + self.formats[fmt] + [filename, tmpfile]
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err = subprocess.call(cmd)
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if err:
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# XXX show stderr output
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raise ValueError("Conversion failed. pstoedit returned %i" % err)
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os.rename(tmpfile, filename)
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