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* src/docgen/LPRDoc.py: New paragraph formatting algorithm.

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Proper alignment support (no implementation for justify yet).


svn: r2969
This commit is contained in:
Alex Roitman 2004-03-05 03:01:21 +00:00
parent e00ab4b350
commit 0d8ab3f31f
2 changed files with 36 additions and 73 deletions
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4
gramps2/ChangeLog
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@ -1,3 +1,7 @@
2004-03-04 Alex Roitman <shura@alex.neuro.umn.edu>
* src/docgen/LPRDoc.py: New paragraph formatting algorithm.
Proper alignment support (no implementation for justify yet).
2004-03-03 Alex Roitman <shura@alex.neuro.umn.edu>
* src/docgen/LPRDoc.py: Superscript support, line breaks,
page breaks, paragraph leader, dirty alignment hack.

101
gramps2/src/docgen/LPRDoc.py
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@ -288,14 +288,22 @@ class GnomePrintParagraph:
return max_word_size
def get_height(self,width):
"""
Determine the height the paragraph would have
if formatted for a given width.
width - required formatting width
"""
if not self.lines:
self.format(width)
return self.height
def format(self,width):
"""
Determine the height the paragraph would have
if formatted for a given width.
Format the paragraph for a given width.
This is a complex procedure. It assembles lines from the paragraph's
pieces. It also sets the height of the whole paragraph and
the widths available after the lines are assembled.
width - required formatting width
"""
@ -694,7 +702,11 @@ class LPRDoc(BaseDoc.BaseDoc):
left_margin,right_margin - boundaries to obey
"""
if not paragraph.get_piece_list():
return (x,y)
left_margin = x
no_space = 0
paragraph.format(width)
if y - _LINE_SPACING < self.bottom_margin:
@ -703,12 +715,10 @@ class LPRDoc(BaseDoc.BaseDoc):
x = left_margin
y = self.__y
# Loop over lines which were assembled by paragraph.format()
for (start_piece,start_word,end_piece,end_word,avail_width) \
in paragraph.lines:
if not paragraph.get_piece_list():
continue
if paragraph.get_alignment() == BaseDoc.PARA_ALIGN_CENTER:
x = x + 0.5 * avail_width
elif paragraph.get_alignment() == BaseDoc.PARA_ALIGN_RIGHT:
@ -719,6 +729,7 @@ class LPRDoc(BaseDoc.BaseDoc):
print "Paragraph justification not supported."
print "Falling back to left-justified mode."
# Loop over pieces that constitute the line
for piece_num in range(start_piece,end_piece+1):
(directive,text) = paragraph.get_piece_list()[piece_num]
fontstyle = BaseDoc.FontStyle(paragraph.get_fontstyle())
@ -738,18 +749,16 @@ class LPRDoc(BaseDoc.BaseDoc):
the_textlist = textlist[start_word:]
elif piece_num == end_piece:
the_textlist = textlist[:end_word]
else:
print "ERROR!!!"
return
the_text = string.join(the_textlist)
if piece_num == start_piece \
or directive == _SUPER \
or directive == _LINE_BREAK \
or (the_text and the_text[0] == '.'):
pass
or no_space \
or (the_text and the_text[0] in string.punctuation):
spacer = ""
else:
the_text = " " + the_text
spacer = " "
the_text = spacer + the_text
self.__pc.setfont(find_font_from_fontstyle(fontstyle))
self.__pc.moveto(x, y)
@ -758,69 +767,17 @@ class LPRDoc(BaseDoc.BaseDoc):
if directive == _SUPER:
y = y - 0.25 * _LINE_SPACING
# If this was the linebreak, no space on the next line's start
if end_word:
no_space = 0
else:
no_space = 1
y = self.__advance_line(y)
x = left_margin
return (x,y)
# #all text will fit within the width provided
# if not text:
# if directive == _SUPER:
# y = y - 0.25 * _LINE_SPACING
# continue
# if avail_width >= get_text_width(text,fontstyle):
# avail_width -= get_text_width(text,fontstyle)
# if paragraph.get_alignment() == BaseDoc.PARA_ALIGN_CENTER:
# x = x + 0.5 * avail_width
# elif paragraph.get_alignment() == BaseDoc.PARA_ALIGN_RIGHT:
# x = x + avail_width
# elif paragraph.get_alignment() == BaseDoc.PARA_ALIGN_LEFT:
# pass
# elif paragraph.get_alignment() == BaseDoc.PARA_ALIGN_JUSTIFY:
# pass
#
# self.__pc.setfont(find_font_from_fontstyle(fontstyle))
# self.__pc.moveto(x, y)
# self.__pc.show(text)
# x = x + get_text_width(text,fontstyle)
# else:
# #divide up text and print
# if x == left_margin or directive == _SUPER \
# or text[0] == '.':
# the_text = ""
# else:
# the_text = " "
# for element in text.split():
# if get_text_width(the_text + element + " ",fontstyle) < avail_width:
# the_text = the_text + element + " "
# else:
# # the_text contains as much as avail_width allows
# self.__pc.setfont(find_font_from_fontstyle(fontstyle))
# self.__pc.moveto(x, y)
# self.__pc.show(the_text)
# the_text = element + " "
# y = self.__advance_line(y)
# x = left_margin
# avail_width = width
#
# #if not in table and cursor is below bottom margin
# if (not self.__in_table) and (y < self.bottom_margin):
# self.end_page()
# self.start_page()
# x = self.__x
# y = self.__y
#
# #if __text still contains data, we will want to print it out
# if the_text:
# self.__pc.setfont(find_font_from_fontstyle(fontstyle))
# self.__pc.moveto(left_margin, y)
# self.__pc.show(the_text)
# x = x + get_text_width(the_text,fontstyle)
# avail_width = width - get_text_width(the_text,fontstyle)
# if directive == _SUPER:
# y = y - 0.25 * _LINE_SPACING
# y = self.__advance_line(y)
def __output_table(self):
"""do calcs on data in table and output data in a formatted way"""
__min_col_size = [0] * self.__ncols
@ -833,12 +790,13 @@ class LPRDoc(BaseDoc.BaseDoc):
if not self.__cell_widths[__row_num][__col]:
continue
__max = 0
for paragraph in __row[__col]:
__min = paragraph.get_min_width()
if __min > __min_col_size[__col]:
__min_col_size[__col] = __min
__max = paragraph.get_height(
__max += paragraph.get_height(
self.__cell_widths[__row_num][__col])
if __max > __max_vspace[__row_num]:
__max_vspace[__row_num] = __max
@ -872,6 +830,7 @@ class LPRDoc(BaseDoc.BaseDoc):
self.__cell_widths[__row_num][__col])
__x = __x + self.__cell_widths[__row_num][__col] # set up margin for this row
self.__y = col_y - __max_vspace[__row_num]
#function to print text to a printer
def __do_print(self,dialog, job):