mirror of https://github.com/NaN-tic/nanscan.git
112 lines
2.8 KiB
Python
112 lines
2.8 KiB
Python
# Copyright (C) 2009 by Albert Cervera i Areny
|
|
# albert@nan-tic.com
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the
|
|
# Free Software Foundation, Inc.,
|
|
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
|
|
from PyQt4.QtCore import *
|
|
|
|
def rangeDistanceComparison(x, y):
|
|
if x.distance > y.distance:
|
|
return 1
|
|
elif x.distance < y.distance:
|
|
return -1
|
|
else:
|
|
return 0
|
|
|
|
def rangeLengthComparison(x, y):
|
|
xt = len( x.text() )
|
|
yt = len( y.text() )
|
|
if xt > yt:
|
|
return 1
|
|
elif xt < yt:
|
|
return -1
|
|
else:
|
|
return 0
|
|
|
|
def rangeDistanceLengthRatioComparison(x, y):
|
|
xt = x.text()
|
|
if len( xt ):
|
|
xl = (1.0/len(xt)) + float( x.distance ) / len( xt )
|
|
else:
|
|
xl = 999
|
|
yt = y.text()
|
|
if len( y.text() ):
|
|
yl = (1.0/len(yt)) + float( y.distance ) / len( yt )
|
|
else:
|
|
yl = 999
|
|
if xl > yl:
|
|
return 1
|
|
elif xl < yl:
|
|
return -1
|
|
else:
|
|
return 0
|
|
|
|
## @brief This class represents a group of characters in a document.
|
|
class Range:
|
|
def __init__(self):
|
|
self.line = 0
|
|
self.pos = 0
|
|
self.length = 0
|
|
self.document = None
|
|
|
|
## @brief Returns a unicode string with the text of the current range
|
|
def text(self):
|
|
line = self.document[self.line]
|
|
chars = line[self.pos:self.pos + self.length]
|
|
return u''.join( [x.character for x in chars] )
|
|
|
|
## @brief Returns the bounding rectangle of the text in the range
|
|
def rect(self):
|
|
line = self.document[self.line]
|
|
chars = line[self.pos:self.pos + self.length]
|
|
rect = QRectF()
|
|
for c in chars:
|
|
rect = rect.united( c.box )
|
|
return rect
|
|
|
|
## @brief Returns a list with all possible ranges of size length of the
|
|
# given document
|
|
@staticmethod
|
|
def extractAllRangesFromDocument(lines, length, width=0):
|
|
if length <= 0:
|
|
return []
|
|
ranges = []
|
|
for line in xrange(len(lines)):
|
|
if length >= len(lines[line]):
|
|
ran = Range()
|
|
ran.line = line
|
|
ran.pos = 0
|
|
ran.length = len(lines[line])
|
|
ran.document = lines
|
|
#if width:
|
|
# while ran.rect().width() > width:
|
|
# ran.length -= 1
|
|
ranges.append( ran )
|
|
continue
|
|
for pos in xrange(len(lines[line]) - length + 1):
|
|
ran = Range()
|
|
ran.line = line
|
|
ran.pos = pos
|
|
ran.length = length
|
|
ran.document = lines
|
|
#if width:
|
|
# while ran.rect().width() > width:
|
|
# ran.length -= 1
|
|
ranges.append( ran )
|
|
return ranges
|
|
|