author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Tue, 30 Mar 2010 17:50:09 +0200 | |
branch | stable |
changeset 5084 | d8f491cb046c |
parent 4721 | 8f63691ccb7f |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
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from xml.etree.ElementTree import QName |
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from pysixt.standard.xhtml_xslfo.transformer import XHTML2FOTransformer |
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from pysixt.utils.xslfo.standard import cm |
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from pysixt.utils.xslfo import SimplePageMaster |
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from pysixt.standard.xhtml_xslfo.default_styling import default_styles |
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from pysixt.standard.xhtml_xslfo import XHTML_NS |
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class ReportTransformer(XHTML2FOTransformer): |
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""" |
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Class transforming an XHTML input tree into a FO document |
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displaying reports (one report for each <div class="contentmain"> |
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element in the input tree. |
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""" |
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def __init__(self, section, |
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page_width=21.0, page_height=29.7, |
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margin_top=1.0, margin_bottom=1.0, |
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margin_left=1.0, margin_right=1.0, |
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header_footer_height=0.75, |
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standard_font_size=11.0, default_lang=u"fr" ): |
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""" |
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Initializes a transformer turning an XHTML input tree |
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containing <div class="contentmain"> elements representing |
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main content sections into a FO output tree displaying the |
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reports. |
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page_width: float - width of the page (in cm) |
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page_height: float - height of the page (in cm) |
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margin_top: float - top margin of the page (in cm) |
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margin_bottom: float - bottom margin of the page (in cm) |
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margin_left: float - left margin of the page (in cm) |
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margin_right: float - right margin of the page (in cm) |
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header_footer_height: float - height of the header or the footer of the |
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page that the page number (if any) will be |
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inserted in. |
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standard_font_size: float - standard size of the font (in pt) |
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default_lang: u"" - default language (used for hyphenation) |
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""" |
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self.section = section |
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self.page_width = page_width |
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self.page_height = page_height |
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self.page_tmargin = margin_top |
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self.page_bmargin = margin_bottom |
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self.page_lmargin = margin_left |
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self.page_rmargin = margin_right |
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self.hf_height = header_footer_height |
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self.font_size = standard_font_size |
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self.lang = default_lang |
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XHTML2FOTransformer.__init__(self) |
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def define_pagemasters(self): |
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""" |
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Defines the page masters for the FO output document. |
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""" |
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pm = SimplePageMaster(u"page-report") |
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pm.set_page_dims( self.page_width*cm, self.page_height*cm ) |
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pm.set_page_margins({u'top' : self.page_tmargin*cm, |
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u'bottom': self.page_bmargin*cm, |
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u'left' : self.page_lmargin*cm, |
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u'right' : self.page_rmargin*cm }) |
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pm.add_peripheral_region(u"end", self.hf_height) |
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dims = {} |
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dims[u"bottom"] = self.hf_height + 0.25 |
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pm.set_main_region_margins(dims) |
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return [pm] |
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def _visit_report(self, in_elt, _out_elt, params): |
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""" |
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Specific visit function for the input <div> elements whose class is |
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"report". The _root_visit method of this class selects these input |
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elements and asks the process of these elements with this specific |
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visit function. |
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""" |
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ps = self.create_pagesequence(u"page-report") |
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props = { u"force-page-count": u"no-force", |
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u"initial-page-number": u"1", |
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u"format": u"1", } |
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self._output_properties(ps, props) |
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sc = self.create_staticcontent(ps, u"end") |
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sc_bl = self.create_block(sc) |
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attrs = { u"hyphenate": u"false", } |
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attrs[u"font-size"] = u"%.1fpt" % (self.font_size * 0.7) |
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attrs[u"language"] = self.lang |
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attrs[u"text-align"] = u"center" |
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self._output_properties(sc_bl, attrs) |
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sc_bl.text = u"Page" + u" " # ### Should be localised! |
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pn = self.create_pagenumber(sc_bl) |
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pn.tail = u"/" |
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self.create_pagenumbercitation( |
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sc_bl, u"last-block-of-report-%d" % params[u"context_pos"]) |
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100 |
fl = self.create_flow(ps, u"body") |
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101 |
bl = self.create_block(fl) |
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102 |
|
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103 |
# Sets on the highest block element the properties of the XHTML body |
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104 |
# element. These properties (at the least the inheritable ones) will |
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105 |
# be inherited by all the future FO elements. |
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106 |
bodies = list(self.in_tree.getiterator(QName(XHTML_NS, u"body"))) |
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107 |
if len(bodies) > 0: |
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108 |
attrs = self._extract_properties([bodies[0]]) |
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109 |
else: |
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110 |
attrs = default_styles[u"body"].copy() |
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111 |
attrs[u"font-size"] = u"%.1fpt" % self.font_size |
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112 |
attrs[u"language"] = self.lang |
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113 |
self._output_properties(bl,attrs) |
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114 |
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115 |
# Processes the report content |
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116 |
self._copy_text(in_elt, bl) |
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self._process_nodes(in_elt.getchildren(), bl) |
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118 |
|
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119 |
# Inserts an empty block at the end of the report in order to be able |
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120 |
# to compute the last page number of this report. |
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121 |
last_bl = self.create_block(bl) |
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122 |
props = { u"keep-with-previous": u"always", } |
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123 |
props[u"id"] = u"last-block-of-report-%d" % params[u"context_pos"] |
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124 |
self._output_properties(last_bl,props) |
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125 |
|
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126 |
|
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127 |
def _root_visit(self): |
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128 |
""" |
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129 |
Visit function called when starting the process of the input tree. |
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130 |
""" |
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131 |
content = [ d for d in self.in_tree.getiterator(QName(XHTML_NS, u"div")) |
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132 |
if d.get(u"id") == self.section ] |
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133 |
# Asks the process of the report elements with a specific visit |
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134 |
# function |
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135 |
self._process_nodes(content, self.fo_root, |
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136 |
with_function=self._visit_report) |
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137 |