108 lines
2.8 KiB
Python
108 lines
2.8 KiB
Python
#!/usr/bin/env python
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from pdfminer.utils import mult_matrix, translate_matrix, apply_matrix_norm
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from pdfminer.pdffont import PDFUnicodeNotDefined
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## PDFDevice
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##
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class PDFDevice(object):
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debug = 0
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def __init__(self, rsrc):
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self.rsrc = rsrc
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self.ctm = None
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return
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def __repr__(self):
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return '<PDFDevice>'
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def close(self):
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return
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def set_ctm(self, ctm):
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self.ctm = ctm
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return
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def begin_tag(self, tag, props=None):
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return
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def end_tag(self):
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return
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def do_tag(self, tag, props=None):
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return
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def begin_page(self, page, ctm):
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return
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def end_page(self, page):
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return
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def begin_figure(self, name, bbox, matrix):
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return
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def end_figure(self, name):
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return
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def paint_path(self, graphicstate, stroke, fill, evenodd, path):
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return
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def render_image(self, stream, size):
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return
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def render_string(self, textstate, seq):
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return
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## PDFTextDevice
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##
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class PDFTextDevice(PDFDevice):
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def handle_undefined_char(self, cidcoding, cid):
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if self.debug:
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print >>sys.stderr, 'undefined: %r, %r' % (cidcoding, cid)
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return '?'
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def render_chars(self, matrix, font, fontsize, charspace, scaling, chars):
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return (0, 0)
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def render_string(self, textstate, seq):
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matrix = mult_matrix(textstate.matrix, self.ctm)
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font = textstate.font
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fontsize = textstate.fontsize
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scaling = textstate.scaling * .01
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charspace = textstate.charspace * scaling
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wordspace = textstate.wordspace * scaling
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dxscale = .001 * fontsize * scaling
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chars = []
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(x,y) = textstate.linematrix
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for obj in seq:
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if isinstance(obj, int) or isinstance(obj, float):
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(dx,dy) = self.render_chars(translate_matrix(matrix, (x,y)), font,
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fontsize, charspace, scaling, chars)
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x += dx
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y += dy
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(dx,dy) = apply_matrix_norm(matrix, (-obj*dxscale,0))
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x += dx
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y += dy
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chars = []
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else:
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for cid in font.decode(obj):
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try:
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char = font.to_unicode(cid)
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except PDFUnicodeNotDefined, e:
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(cidcoding, cid) = e.args
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char = self.handle_undefined_char(cidcoding, cid)
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chars.append((char, cid))
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if cid == 32 and textstate.wordspace and not font.is_multibyte():
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(dx,dy) = self.render_chars(translate_matrix(matrix, (x,y)), font,
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fontsize, charspace, scaling, chars)
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x += dx
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y += dy
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(dx,dy) = apply_matrix_norm(matrix, (wordspace,0))
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x += dx
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y += dy
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chars = []
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if chars:
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(dx,dy) = self.render_chars(translate_matrix(matrix, (x,y)), font,
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fontsize, charspace, scaling, chars)
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x += dx
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y += dy
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textstate.linematrix = (x,y)
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return
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