PDF: Printable ToC

PDF Output: Add an option to generate a printable Table of Contents
(that lists page numbers). Useful if you intend to print out the PDF.

manual/conversion.rst

@@ -808,3 +808,26 @@ the page will be used.
     bottom margins to large enough values, under the Page Setup section of the
     conversion dialog.
 
+You can also insert a printable Table of Contents at the end of the PDF that
+lists the page numbers for every section. This is very useful if you intend to
+print out the PDF to paper. If you wish to use the PDF on an electronic device,
+then the PDF Outline provides this functionality and is generated by default.
+
+You can customize the look of the the generated Table of contents by using the
+Extra CSS conversion setting under the Look & Feel part of the conversion
+dialog. The default css used is listed below, simply copy it and make whatever
+changes you like.
+
+.. code-block:: css
+
+        .calibre-pdf-toc table { width: 100%% }
+
+        .calibre-pdf-toc table tr td:last-of-type { text-align: right }
+
+        .calibre-pdf-toc .level-0 {
+            font-size: larger;
+        }
+
+        .calibre-pdf-toc .level-1 td:first-of-type { padding-left: 1.4em }
+        .calibre-pdf-toc .level-2 td:first-of-type { padding-left: 2.8em }
+

src/calibre/ebooks/conversion/plugins/pdf_output.py

@@ -29,7 +29,7 @@ class PDFMetadata(object): # {{{
         self.author = _(u'Unknown')
         self.tags = u''
 
-        if oeb_metadata != None:
+        if oeb_metadata is not None:
             if len(oeb_metadata.title) >= 1:
                 self.title = oeb_metadata.title[0].value
             if len(oeb_metadata.creator) >= 1:
@@ -109,6 +109,9 @@ class PDFOutput(OutputFormatPlugin):
         OptionRecommendation(name='pdf_header_template', recommended_value=None,
             help=_('An HTML template used to generate %s on every page.'
                    ' The strings _PAGENUM_, _TITLE_, _AUTHOR_ and _SECTION_ will be replaced by their current values.')%_('headers')),
+        OptionRecommendation(name='pdf_add_toc', recommended_value=False,
+            help=_('Add a Table of Contents at the end of the PDF that lists page numbers. '
+                   'Useful if you want to print out the PDF. If this PDF is intended for electronic use, use the PDF Outline instead.')),
         ])
 
     def convert(self, oeb_book, output_path, input_plugin, opts, log):
@@ -122,7 +125,6 @@ class PDFOutput(OutputFormatPlugin):
         self.metadata = oeb_book.metadata
         self.cover_data = None
 
-
         if input_plugin.is_image_collection:
             log.debug('Converting input as an image collection...')
             self.convert_images(input_plugin.get_images())
@@ -156,7 +158,8 @@ class PDFOutput(OutputFormatPlugin):
         # fonts to Qt
         family_map = {}
         for item in list(self.oeb.manifest):
-            if not hasattr(item.data, 'cssRules'): continue
+            if not hasattr(item.data, 'cssRules'):
+                continue
             remove = set()
             for i, rule in enumerate(item.data.cssRules):
                 if rule.type == rule.FONT_FACE_RULE:
@@ -195,11 +198,14 @@ class PDFOutput(OutputFormatPlugin):
         # family name of the embedded font (they may be different in general).
         font_warnings = set()
         for item in self.oeb.manifest:
-            if not hasattr(item.data, 'cssRules'): continue
+            if not hasattr(item.data, 'cssRules'):
+                continue
             for i, rule in enumerate(item.data.cssRules):
-                if rule.type != rule.STYLE_RULE: continue
+                if rule.type != rule.STYLE_RULE:
+                    continue
                 ff = rule.style.getProperty('font-family')
-                if ff is None: continue
+                if ff is None:
+                    continue
                 val = ff.propertyValue
                 for i in xrange(val.length):
                     try:
@@ -279,3 +285,5 @@ class PDFOutput(OutputFormatPlugin):
         if close:
             out_stream.close()
 
+
+

src/calibre/ebooks/pdf/render/from_html.py

@@ -21,6 +21,7 @@ from calibre.ebooks.oeb.display.webview import load_html
 from calibre.ebooks.pdf.render.common import (inch, cm, mm, pica, cicero,
                                               didot, PAPER_SIZES)
 from calibre.ebooks.pdf.render.engine import PdfDevice
+from calibre.ptempfile import PersistentTemporaryFile
 
 def get_page_size(opts, for_comic=False):  # {{{
     use_profile = not (opts.override_profile_size or
@@ -36,7 +37,7 @@ def get_page_size(opts, for_comic=False): # {{{
         page_size = (factor * w, factor * h)
     else:
         page_size = None
-        if opts.custom_size != None:
+        if opts.custom_size is not None:
             width, sep, height = opts.custom_size.partition('x')
             if height:
                 try:
@@ -237,11 +238,23 @@ class PDFWriter(QObject):
         if self.doc.errors_occurred:
             raise Exception('PDF Output failed, see log for details')
 
+    def render_inline_toc(self):
+        self.rendered_inline_toc = True
+        from calibre.ebooks.pdf.render.toc import toc_as_html
+        raw = toc_as_html(self.toc, self.doc, self.opts)
+        pt = PersistentTemporaryFile('_pdf_itoc.htm')
+        pt.write(raw)
+        pt.close()
+        self.render_queue.append(pt.name)
+        self.render_next()
+
     def render_book(self):
         if self.doc.errors_occurred:
             return self.loop.exit(1)
         try:
             if not self.render_queue:
+                if self.toc is not None and len(self.toc) > 0 and not hasattr(self, 'rendered_inline_toc'):
+                    return self.render_inline_toc()
                 self.loop.exit()
             else:
                 self.render_next()
@@ -383,3 +396,4 @@ class PDFWriter(QObject):
                             amap['anchors'])
 
 
+

src/calibre/ebooks/pdf/render/serialize.py

@@ -187,6 +187,12 @@ class PageTree(Dictionary):
     def get_ref(self, num):
         return self['Kids'][num-1]
 
+    def get_num(self, pageref):
+        try:
+            return self['Kids'].index(pageref) + 1
+        except ValueError:
+            return -1
+
 class HashingStream(object):
 
     def __init__(self, f):
@@ -237,14 +243,14 @@ class PDFStream(object):
 
     PATH_OPS = {
         # stroke fill   fill-rule
-        ( False, False, 'winding')  : 'n',
+        (False, False, 'winding')  : 'n',
-        ( False, False, 'evenodd')  : 'n',
+        (False, False, 'evenodd')  : 'n',
-        ( False, True,  'winding')  : 'f',
+        (False, True,  'winding')  : 'f',
-        ( False, True,  'evenodd')  : 'f*',
+        (False, True,  'evenodd')  : 'f*',
-        ( True,  False, 'winding')  : 'S',
+        (True,  False, 'winding')  : 'S',
-        ( True,  False, 'evenodd')  : 'S',
+        (True,  False, 'evenodd')  : 'S',
-        ( True,  True,  'winding')  : 'B',
+        (True,  True,  'winding')  : 'B',
-        ( True,  True,  'evenodd')  : 'B*',
+        (True,  True,  'evenodd')  : 'B*',
     }
 
     def __init__(self, stream, page_size, compress=False, mark_links=False,
@@ -329,12 +335,14 @@ class PDFStream(object):
                 (fmtnum(x) if isinstance(x, (int, long, float)) else x) + ' ')
 
     def draw_path(self, path, stroke=True, fill=False, fill_rule='winding'):
-        if not path.ops: return
+        if not path.ops:
+            return
         self.write_path(path)
         self.current_page.write_line(self.PATH_OPS[(stroke, fill, fill_rule)])
 
     def add_clip(self, path, fill_rule='winding'):
-        if not path.ops: return
+        if not path.ops:
+            return
         self.write_path(path)
         op = 'W' if fill_rule == 'winding' else 'W*'
         self.current_page.write_line(op + ' ' + 'n')
@@ -503,3 +511,4 @@ class PDFStream(object):
         self.write_line('%d'%startxref)
         self.stream.write('%%EOF')
 
+

src/calibre/ebooks/pdf/render/toc.py

@@ -0,0 +1,76 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+from __future__ import (unicode_literals, division, absolute_import,
+                        print_function)
+
+__license__ = 'GPL v3'
+__copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
+
+import os
+
+from lxml.html import tostring
+from lxml.html.builder import (HTML, HEAD, BODY, TABLE, TR, TD, H1, STYLE)
+
+def convert_node(toc, table, level, pdf):
+    tr = TR(
+        TD(toc.text or _('Unknown')), TD(),
+    )
+    tr.set('class', 'level-%d' % level)
+    anchors = pdf.links.anchors
+
+    path = toc.abspath or None
+    frag = toc.fragment or None
+    if path is None:
+        return
+    path = os.path.normcase(os.path.abspath(path))
+    if path not in anchors:
+        return None
+    a = anchors[path]
+    dest = a.get(frag, a[None])
+    num = pdf.page_tree.obj.get_num(dest[0])
+    tr[1].text = type('')(num)
+    table.append(tr)
+
+
+def process_children(toc, table, level, pdf):
+    for child in toc:
+        convert_node(child, table, level, pdf)
+        process_children(child, table, level+1, pdf)
+
+def toc_as_html(toc, pdf, opts):
+    pdf = pdf.engine.pdf
+    indents = []
+    for i in xrange(1, 7):
+        indents.extend((i, 1.4*i))
+    html = HTML(
+        HEAD(
+            STYLE(
+            '''
+            .calibre-pdf-toc table { width: 100%% }
+
+            .calibre-pdf-toc table tr td:last-of-type { text-align: right }
+
+            .calibre-pdf-toc .level-0 {
+                font-size: larger;
+            }
+
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            .calibre-pdf-toc .level-%d td:first-of-type { padding-left: %.1gem }
+            ''' % tuple(indents) + (opts.extra_css or '')
+            )
+        ),
+        BODY(
+            H1(_('Table of Contents')),
+            TABLE(),
+        )
+    )
+    body = html[1]
+    body.set('class', 'calibre-pdf-toc')
+
+    process_children(toc, body[1], 0, pdf)
+
+    return tostring(html, pretty_print=True, include_meta_content_type=True, encoding='utf-8')

src/calibre/gui2/convert/pdf_output.py

@@ -23,7 +23,7 @@ class PluginWidget(Widget, Ui_Form):
             'preserve_cover_aspect_ratio', 'pdf_serif_family', 'unit',
             'pdf_sans_family', 'pdf_mono_family', 'pdf_standard_font',
             'pdf_default_font_size', 'pdf_mono_font_size', 'pdf_page_numbers',
-            'pdf_footer_template', 'pdf_header_template',
+            'pdf_footer_template', 'pdf_header_template', 'pdf_add_toc',
         ])
         self.db, self.book_id = db, book_id
 

src/calibre/gui2/convert/pdf_output.ui

@@ -77,21 +77,21 @@
      </item>
     </layout>
    </item>
-   <item row="4" column="0" colspan="2">
+   <item row="5" column="0" colspan="2">
     <widget class="QCheckBox" name="opt_preserve_cover_aspect_ratio">
      <property name="text">
       <string>Preserve &amp;aspect ratio of cover</string>
      </property>
     </widget>
    </item>
-   <item row="5" column="0" colspan="2">
+   <item row="6" column="0" colspan="2">
     <widget class="QCheckBox" name="opt_pdf_page_numbers">
      <property name="text">
       <string>Add page &amp;numbers to the bottom of every page</string>
      </property>
     </widget>
    </item>
-   <item row="6" column="0">
+   <item row="10" column="0">
     <widget class="QLabel" name="label_4">
      <property name="text">
       <string>Se&amp;rif family:</string>
@@ -101,10 +101,10 @@
      </property>
     </widget>
    </item>
-   <item row="6" column="1">
+   <item row="10" column="1">
     <widget class="QFontComboBox" name="opt_pdf_serif_family"/>
    </item>
-   <item row="7" column="0">
+   <item row="11" column="0">
     <widget class="QLabel" name="label_5">
      <property name="text">
       <string>&amp;Sans family:</string>
@@ -114,10 +114,10 @@
      </property>
     </widget>
    </item>
-   <item row="7" column="1">
+   <item row="11" column="1">
     <widget class="QFontComboBox" name="opt_pdf_sans_family"/>
    </item>
-   <item row="8" column="0">
+   <item row="12" column="0">
     <widget class="QLabel" name="label_6">
      <property name="text">
       <string>&amp;Monospace family:</string>
@@ -127,10 +127,10 @@
      </property>
     </widget>
    </item>
-   <item row="8" column="1">
+   <item row="12" column="1">
     <widget class="QFontComboBox" name="opt_pdf_mono_family"/>
    </item>
-   <item row="9" column="0">
+   <item row="13" column="0">
     <widget class="QLabel" name="label_7">
      <property name="text">
       <string>S&amp;tandard font:</string>
@@ -140,10 +140,10 @@
      </property>
     </widget>
    </item>
-   <item row="9" column="1">
+   <item row="13" column="1">
     <widget class="QComboBox" name="opt_pdf_standard_font"/>
    </item>
-   <item row="10" column="0">
+   <item row="14" column="0">
     <widget class="QLabel" name="label_8">
      <property name="text">
       <string>Default font si&amp;ze:</string>
@@ -153,14 +153,14 @@
      </property>
     </widget>
    </item>
-   <item row="10" column="1">
+   <item row="14" column="1">
     <widget class="QSpinBox" name="opt_pdf_default_font_size">
      <property name="suffix">
       <string> px</string>
      </property>
     </widget>
    </item>
-   <item row="11" column="0">
+   <item row="15" column="0">
     <widget class="QLabel" name="label_9">
      <property name="text">
       <string>Monospace &amp;font size:</string>
@@ -170,14 +170,14 @@
      </property>
     </widget>
    </item>
-   <item row="11" column="1">
+   <item row="15" column="1">
     <widget class="QSpinBox" name="opt_pdf_mono_font_size">
      <property name="suffix">
       <string> px</string>
      </property>
     </widget>
    </item>
-   <item row="12" column="0" colspan="2">
+   <item row="16" column="0" colspan="2">
     <widget class="QGroupBox" name="groupBox">
      <property name="title">
       <string>Page headers and footers</string>
@@ -225,6 +225,13 @@
      </layout>
     </widget>
    </item>
+   <item row="7" column="0" colspan="2">
+    <widget class="QCheckBox" name="opt_pdf_add_toc">
+     <property name="text">
+      <string>Add a printable &amp;Table of Contents at the end</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <resources/>