Command line PDF conversion and bookmark manager for ebook-viewer

src/calibre/ebooks/epub/iterator.py

@@ -195,5 +195,8 @@ class EbookIterator(object):
         self.bookmarks.append(bm)
         self.save_bookmarks()
         
+    def set_bookmarks(self, bookmarks):
+        self.bookmarks = bookmarks
+        
     def __exit__(self, *args):
         self._tdir.__exit__(*args)

src/calibre/ebooks/metadata/pdf.py

@@ -1,16 +1,37 @@
-__license__   = 'GPL v3'
-__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 '''Read meta information from PDF files'''
 
-import sys, re
+from __future__ import with_statement
 
-from calibre.ebooks.metadata import MetaInformation, authors_to_string
-from pyPdf import PdfFileReader
+__license__   = 'GPL v3'
+__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 
-def get_metadata(stream):
+import sys, os, re, StringIO
+
+from calibre.ebooks.metadata import MetaInformation, authors_to_string, get_parser
+from calibre.ptempfile import TemporaryDirectory
+from pyPdf import PdfFileReader, PdfFileWriter
+import Image
+try:
+    from calibre.utils.PythonMagickWand import \
+        NewMagickWand, MagickReadImage, MagickSetImageFormat, MagickWriteImage
+    _imagemagick_loaded = True
+except:
+    _imagemagick_loaded = False
+
+def get_metadata(stream, extract_cover=True):
     """ Return metadata as a L{MetaInfo} object """
     mi = MetaInformation(_('Unknown'), [_('Unknown')])
     stream.seek(0)
+
+    if extract_cover and _imagemagick_loaded:
+        try:
+            cdata = get_cover(stream)
+            if cdata is not None:
+                mi.cover_data = ('jpg', cdata)
+        except:
+            import traceback
+            traceback.print_exc()
+    
     try:
         info = PdfFileReader(stream).getDocumentInfo()
         if info.title:
@@ -45,3 +66,68 @@ def set_metadata(stream, mi):
     stream.write(raw)
     stream.seek(0)
 
+def get_cover(stream):
+    try:
+        pdf = PdfFileReader(stream)
+        output = PdfFileWriter()
+        
+        if len(pdf.pages) >= 1:
+            output.addPage(pdf.getPage(0))
+            
+        with TemporaryDirectory('_pdfmeta') as tdir:
+            cover_path = os.path.join(tdir, 'cover.pdf')
+        
+            outputStream = file(cover_path, "wb")
+            output.write(outputStream)
+            outputStream.close()
+            
+            wand = NewMagickWand()
+            MagickReadImage(wand, cover_path)
+            MagickSetImageFormat(wand, 'JPEG')
+            MagickWriteImage(wand, '%s.jpg' % cover_path)
+            
+            img = Image.open('%s.jpg' % cover_path)
+            
+            data = StringIO.StringIO()
+            img.save(data, 'JPEG')
+            return data.getvalue()
+    except:
+        import traceback
+        traceback.print_exc()
+
+def option_parser():
+    p = get_parser('pdf')
+    p.remove_option('--category')
+    p.remove_option('--comment')
+    p.add_option('--get-cover', default=False, action='store_true',
+                      help=_('Extract the cover'))
+    return p
+            
+def main(args=sys.argv):
+    p = option_parser()
+    opts, args = p.parse_args(args)
+
+    with open(os.path.abspath(os.path.expanduser(args[1])), 'r+b') as stream:
+        mi = get_metadata(stream, extract_cover=opts.get_cover)
+        changed = False
+        if opts.title:
+            mi.title = opts.title
+            changed = True
+        if opts.authors:
+            mi.authors = opts.authors.split(',')
+            changed = True
+        
+        if changed:
+            set_metadata(stream, mi)
+        print unicode(get_metadata(stream, extract_cover=False)).encode('utf-8')
+        
+    if mi.cover_data[1] is not None:
+        cpath = os.path.splitext(os.path.basename(args[1]))[0] + '_cover.jpg'
+        with open(cpath, 'wb') as f:
+            f.write(mi.cover_data[1])
+            print 'Cover saved to', f.name
+        
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())

src/calibre/ebooks/pdf/from_any.py

@@ -0,0 +1,69 @@
+'''
+Convert any ebook format to PDF.
+'''
+
+from __future__ import with_statement
+
+__license__   = 'GPL v3'
+__copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net ' \
+    'and Marshall T. Vandegrift <llasram@gmail.com>' \
+    'and John Schember <john@nachtimwald.com>'
+__docformat__ = 'restructuredtext en'
+
+import sys, os, glob, logging
+
+from calibre.ebooks.epub.from_any import any2epub, formats, USAGE
+from calibre.ebooks.epub import config as common_config
+from calibre.ptempfile import TemporaryDirectory
+from calibre.ebooks.pdf.writer import oeb2pdf, config as pdf_config
+
+def config(defaults=None):
+    c = common_config(defaults=defaults, name='pdf')
+    c.remove_opt('profile')
+    pdfc = pdf_config(defaults=defaults)
+    c.update(pdfc)
+    return c 
+
+def option_parser(usage=USAGE):
+    usage = usage % ('PDF', formats())
+    parser = config().option_parser(usage=usage)
+    return parser
+
+def any2pdf(opts, path, notification=None):
+    ext = os.path.splitext(path)[1]
+    if not ext:
+        raise ValueError('Unknown file type: '+path)
+    ext = ext.lower()[1:]
+    
+    if opts.output is None:
+        opts.output = os.path.splitext(os.path.basename(path))[0]+'.pdf'
+    
+    opts.output = os.path.abspath(opts.output)
+    orig_output = opts.output
+    
+    with TemporaryDirectory('_any2pdf') as tdir:
+        oebdir = os.path.join(tdir, 'oeb')
+        os.mkdir(oebdir)
+        opts.output = os.path.join(tdir, 'dummy.epub')
+        opts.profile = 'None'
+        opts.dont_split_on_page_breaks = True
+        orig_bfs = opts.base_font_size2
+        opts.base_font_size2 = 0
+        any2epub(opts, path, create_epub=False, oeb_cover=True, extract_to=oebdir)
+        opts.base_font_size2 = orig_bfs
+        opf = glob.glob(os.path.join(oebdir, '*.opf'))[0]
+        opts.output = orig_output
+        logging.getLogger('html2epub').info(_('Creating PDF file from EPUB...'))
+        oeb2pdf(opts, opf)
+
+def main(args=sys.argv):
+    parser = option_parser()
+    opts, args = parser.parse_args(args)
+    if len(args) < 2:
+        parser.print_help()
+        print 'No input file specified.'
+        return 1
+    any2pdf(opts, args[1])
+    
+if __name__ == '__main__':
+    sys.exit(main())

src/calibre/ebooks/pdf/writer.py

@@ -0,0 +1,150 @@
+'''
+Write content to PDF.
+'''
+from __future__ import with_statement
+
+__license__   = 'GPL v3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+
+import os, logging, shutil, sys
+
+from calibre import LoggingInterface
+from calibre.ebooks.epub.iterator import SpineItem
+from calibre.ebooks.metadata.opf2 import OPF
+from calibre.ptempfile import PersistentTemporaryDirectory
+from calibre.customize.ui import run_plugins_on_postprocess
+from calibre.utils.config import Config, StringConfig
+
+from PyQt4 import QtCore
+from PyQt4.Qt import QUrl, QEventLoop, SIGNAL, QObject, QApplication, QPrinter, \
+    QMetaObject, Qt
+from PyQt4.QtWebKit import QWebView
+
+from pyPdf import PdfFileWriter, PdfFileReader
+    
+class PDFWriter(QObject):
+    def __init__(self):
+        if QApplication.instance() is None:
+            QApplication([])
+        QObject.__init__(self)
+        
+        self.logger = logging.getLogger('oeb2pdf')
+        
+        self.loop = QEventLoop()
+        self.view = QWebView()
+        self.connect(self.view, SIGNAL('loadFinished(bool)'), self._render_html)
+        self.render_queue = []
+        self.combine_queue = []
+        self.tmp_path = PersistentTemporaryDirectory('_any2pdf_parts')
+
+    def dump(self, oebpath, path):
+        self._delete_tmpdir()
+        
+        opf = OPF(oebpath, os.path.dirname(oebpath))
+        self.render_queue = [SpineItem(i.path) for i in opf.spine]
+        self.combine_queue = []
+        self.path = path
+        
+        QMetaObject.invokeMethod(self, "_render_book", Qt.QueuedConnection)
+        self.loop.exec_()
+        
+    @QtCore.pyqtSignature('_render_book()')
+    def _render_book(self):
+        if len(self.render_queue) == 0:
+            self._write()
+        else:
+            self._render_next()
+            
+    def _render_next(self):
+        item = str(self.render_queue.pop(0))
+        self.combine_queue.append(os.path.join(self.tmp_path, '%s_%i.pdf' % (os.path.basename(item), len(self.combine_queue))))
+        
+        self.logger.info('Processing %s...' % item)
+    
+        self.view.load(QUrl(item))
+
+    def _render_html(self, ok):
+        if ok:
+            item_path = os.path.join(self.tmp_path, '%s_%i.pdf' % (os.path.basename(str(self.view.url().toLocalFile())), len(self.combine_queue) - 1))
+            
+            self.logger.debug('\tRendering item as %s' % item_path)
+        
+            printer = QPrinter(QPrinter.HighResolution)
+            printer.setPageMargins(1, 1, 1, 1, QPrinter.Inch)
+            printer.setOutputFormat(QPrinter.PdfFormat)
+            printer.setOutputFileName(item_path)
+            self.view.print_(printer)
+        self._render_book()
+
+    def _delete_tmpdir(self):
+        if os.path.exists(self.tmp_path):
+            shutil.rmtree(self.tmp_path, True)
+            self.tmp_path = PersistentTemporaryDirectory('_any2pdf_parts')
+
+    def _write(self):
+        self.logger.info('Combining individual PDF parts...')
+    
+        try:
+            outPDF = PdfFileWriter()
+            for item in self.combine_queue:
+                inputPDF = PdfFileReader(file(item, 'rb'))
+                for page in inputPDF.pages:
+                    outPDF.addPage(page)
+            outputStream = file(self.path, 'wb')
+            outPDF.write(outputStream)
+            outputStream.close()
+        finally:
+            self._delete_tmpdir()
+            self.loop.exit(0)
+
+
+def config(defaults=None):
+    desc = _('Options to control the conversion to PDF')
+    if defaults is None:
+        c = Config('pdf', desc)
+    else:
+        c = StringConfig(defaults, desc)
+        
+    pdf = c.add_group('PDF', _('PDF options.'))
+    
+    return c
+    
+
+def option_parser():
+    c = config()
+    parser = c.option_parser(usage='%prog '+_('[options]')+' file.opf')
+    parser.add_option(
+        '-o', '--output', default=None, 
+        help=_('Output file. Default is derived from input filename.'))
+    parser.add_option(
+        '-v', '--verbose', default=0, action='count',
+        help=_('Useful for debugging.'))
+    return parser
+
+def oeb2pdf(opts, inpath):
+    logger = LoggingInterface(logging.getLogger('oeb2pdf'))
+    logger.setup_cli_handler(opts.verbose)
+    
+    outpath = opts.output
+    if outpath is None:
+        outpath = os.path.basename(inpath)
+        outpath = os.path.splitext(outpath)[0] + '.pdf'
+
+    writer = PDFWriter()
+    writer.dump(inpath, outpath)
+    run_plugins_on_postprocess(outpath, 'pdf')
+    logger.log_info(_('Output written to ') + outpath)
+    
+def main(argv=sys.argv):
+    parser = option_parser()
+    opts, args = parser.parse_args(argv[1:])
+    if len(args) != 1:
+        parser.print_help()
+        return 1
+    inpath = args[0]
+    retval = oeb2pdf(opts, inpath)
+    return retval
+
+if __name__ == '__main__':
+    sys.exit(main())
+    

src/calibre/gui2/viewer/bookmarkmanager.py

@@ -0,0 +1,93 @@
+__license__   = 'GPL v3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+
+
+from PyQt4.Qt import Qt, QDialog, QAbstractTableModel, QVariant, SIGNAL, \
+    QModelIndex, QInputDialog, QLineEdit
+
+from calibre.gui2.viewer.bookmarkmanager_ui import Ui_BookmarkManager
+from calibre.gui2 import NONE, qstring_to_unicode
+
+class BookmarkManager(QDialog, Ui_BookmarkManager):
+    def __init__(self, parent, bookmarks):
+        QDialog.__init__(self, parent)
+        
+        self.setupUi(self)
+        
+        self.bookmarks = bookmarks[:]
+        self.set_bookmarks()
+        
+        self.connect(self.button_revert, SIGNAL('clicked()'), self.set_bookmarks)
+        self.connect(self.button_delete, SIGNAL('clicked()'), self.delete_bookmark)
+        self.connect(self.button_edit, SIGNAL('clicked()'), self.edit_bookmark)
+        
+    def set_bookmarks(self):
+        self._model = BookmarkTableModel(self, self.bookmarks)
+        self.bookmarks_table.setModel(self._model)
+        
+    def delete_bookmark(self):
+        indexes = self.bookmarks_table.selectionModel().selectedIndexes()
+        if indexes != []:
+            self._model.remove_row(indexes[0].row())
+        
+    def edit_bookmark(self):
+        indexes = self.bookmarks_table.selectionModel().selectedIndexes()
+        if indexes != []:
+            title, ok = QInputDialog.getText(self, _('Edit bookmark'), _('New title for bookmark:'), QLineEdit.Normal, self._model.data(indexes[0], Qt.DisplayRole).toString())
+            title = QVariant(unicode(title).strip())
+            if ok and title:
+                self._model.setData(indexes[0], title, Qt.EditRole)
+                
+    def get_bookmarks(self):
+        return self._model.bookmarks
+        
+
+class BookmarkTableModel(QAbstractTableModel):
+    headers = [_("Name")]
+
+    def __init__(self, parent, bookmarks):
+        QAbstractTableModel.__init__(self, parent)
+        
+        self.bookmarks = bookmarks[:]
+
+    def rowCount(self, parent):
+        if parent and parent.isValid():
+            return 0
+        return len(self.bookmarks)
+        
+    def columnCount(self, parent):
+        if parent and parent.isValid():
+            return 0
+        return len(self.headers)
+        
+    def data(self, index, role):
+        if role in (Qt.DisplayRole, Qt.EditRole):
+            ans = self.bookmarks[index.row()][0]
+            return NONE if ans is None else QVariant(ans)
+        return NONE
+    
+    def setData(self, index, value, role):
+        if role == Qt.EditRole:
+            self.bookmarks[index.row()] = (qstring_to_unicode(value.toString()).strip(), self.bookmarks[index.row()][1])
+            self.emit(SIGNAL("dataChanged(QModelIndex, QModelIndex)"), index, index)
+            return True
+        return False
+        
+    def flags(self, index):
+        flags = QAbstractTableModel.flags(self, index)
+        flags |= Qt.ItemIsEditable
+        return flags
+
+    def headerData(self, section, orientation, role):
+        if role != Qt.DisplayRole:
+            return NONE
+        if orientation == Qt.Horizontal:
+            return QVariant(self.headers[section])
+        else:
+            return QVariant(section+1)
+    
+    def remove_row(self, row):
+        self.beginRemoveRows(QModelIndex(), row, row)
+        del self.bookmarks[row]
+        self.endRemoveRows()
+

src/calibre/gui2/viewer/bookmarkmanager.ui

@@ -0,0 +1,57 @@
+<ui version="4.0" >
+ <class>BookmarkManager</class>
+ <widget class="QDialog" name="BookmarkManager" >
+  <property name="geometry" >
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle" >
+   <string>Dialog</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout" >
+   <item row="0" column="0" colspan="3" >
+    <widget class="QTableView" name="bookmarks_table" >
+     <property name="showDropIndicator" stdset="0" >
+      <bool>false</bool>
+     </property>
+     <property name="alternatingRowColors" >
+      <bool>true</bool>
+     </property>
+     <property name="selectionMode" >
+      <enum>QAbstractItemView::SingleSelection</enum>
+     </property>
+     <property name="sortingEnabled" >
+      <bool>false</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0" >
+    <widget class="QPushButton" name="button_revert" >
+     <property name="text" >
+      <string>Revert</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="1" >
+    <widget class="QPushButton" name="button_delete" >
+     <property name="text" >
+      <string>Delete</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="2" >
+    <widget class="QPushButton" name="button_edit" >
+     <property name="text" >
+      <string>Edit</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/calibre/gui2/viewer/main.py

@@ -12,6 +12,8 @@ from PyQt4.Qt import QMovie, QApplication, Qt, QIcon, QTimer, QWidget, SIGNAL, \
                      QToolButton, QMenu, QInputDialog, QAction
 
 from calibre.gui2.viewer.main_ui import Ui_EbookViewer
+from calibre.gui2.viewer.printing import Printing
+from calibre.gui2.viewer.bookmarkmanager import BookmarkManager
 from calibre.gui2.main_window import MainWindow
 from calibre.gui2 import Application, ORG_NAME, APP_UID, choose_files, \
                          info_dialog, error_dialog
@@ -262,7 +264,11 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
         self.connect(self.toc, SIGNAL('clicked(QModelIndex)'), self.toc_clicked)
         self.connect(self.reference, SIGNAL('goto(PyQt_PyObject)'), self.goto)
         
+        
+        self.bookmarks_menu = QMenu()
+        self.action_bookmark.setMenu(self.bookmarks_menu)
         self.set_bookmarks([])
+        
         if pathtoebook is not None:
             f = functools.partial(self.load_ebook, pathtoebook)
             QTimer.singleShot(50, f)
@@ -274,6 +280,16 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
         self.tool_bar.widgetForAction(self.action_bookmark).setPopupMode(QToolButton.MenuButtonPopup)
         self.action_full_screen.setCheckable(True)
         
+        self.print_menu = QMenu()
+        self.print_menu.addAction(QIcon(':/images/print-preview.svg'), _('Print Preview'))
+        self.action_print.setMenu(self.print_menu)
+        self.tool_bar.widgetForAction(self.action_print).setPopupMode(QToolButton.MenuButtonPopup)
+        self.connect(self.action_print, SIGNAL("triggered(bool)"), partial(self.print_book, preview=False))
+        self.connect(self.print_menu.actions()[0], SIGNAL("triggered(bool)"), partial(self.print_book, preview=True))
+
+    def print_book(self, preview):
+        Printing(self.iterator.spine, preview)
+
     def toggle_fullscreen(self, x):
         if self.isFullScreen():
             self.showNormal()
@@ -477,17 +493,28 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
         self.setCursor(Qt.BusyCursor)
     
     def set_bookmarks(self, bookmarks):
-        menu = QMenu()
+        self.bookmarks_menu.clear()
+        self.bookmarks_menu.addAction(_("Manage Bookmarks"), self.manage_bookmarks)
+        self.bookmarks_menu.addSeparator()
         current_page = None
         for bm in bookmarks:
             if bm[0] == 'calibre_current_page_bookmark':
                 current_page = bm
             else:
-                menu.addAction(bm[0], partial(self.goto_bookmark, bm))
-        self.action_bookmark.setMenu(menu)
-        self._menu = menu
+                self.bookmarks_menu.addAction(bm[0], partial(self.goto_bookmark, bm))
         return current_page
         
+    def manage_bookmarks(self):
+        bmm = BookmarkManager(self, self.iterator.bookmarks)
+        bmm.exec_()
+        
+        bookmarks = bmm.get_bookmarks()
+        
+        if bookmarks != self.iterator.bookmarks:
+            self.iterator.set_bookmarks(bookmarks)
+            self.iterator.save_bookmarks()
+            self.set_bookmarks(bookmarks)
+        
     def save_current_position(self):
         try:
             pos = self.view.bookmark()

src/calibre/gui2/viewer/main.ui

@@ -27,8 +27,8 @@
       <widget class="QWidget" name="layoutWidget" >
        <layout class="QGridLayout" name="gridLayout" >
         <item row="0" column="0" >
-         <widget class="QWebView" native="1" name="view" >
-          <property name="url" stdset="0" >
+         <widget class="QWebView" name="view" >
+          <property name="url" >
            <url>
             <string>about:blank</string>
            </url>
@@ -89,6 +89,8 @@
    <addaction name="separator" />
    <addaction name="action_preferences" />
    <addaction name="action_full_screen" />
+   <addaction name="separator" />
+   <addaction name="action_print" />
   </widget>
   <widget class="QToolBar" name="tool_bar2" >
    <attribute name="toolBarArea" >
@@ -234,6 +236,15 @@
     <string>Toggle full screen</string>
    </property>
   </action>
+  <action name="action_print" >
+   <property name="icon" >
+    <iconset resource="../images.qrc" >
+     <normaloff>:/images/print.svg</normaloff>:/images/print.svg</iconset>
+   </property>
+   <property name="text" >
+    <string>Print</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

src/calibre/gui2/viewer/printing.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+
+__license__   = 'GPL v3'
+__copyright__ = '2009, John Schember <john@nachtimwald.com>'
+
+
+import os, sys, traceback, urlparse
+
+from BeautifulSoup import BeautifulSoup, Tag
+
+from calibre.ebooks.epub.iterator import EbookIterator
+from calibre.ptempfile import TemporaryDirectory
+
+from PyQt4 import QtCore
+from PyQt4.Qt import QUrl, QEventLoop, SIGNAL,  QObject, QApplication, Qt, \
+    QPrinter, QPrintPreviewDialog, QPrintDialog, QDialog, QMetaObject, Q_ARG
+from PyQt4 import QtCore
+from PyQt4.QtWebKit import QWebView
+
+PRINTCSS = 'body{width:100%;margin:0;padding:0;font-family:Arial;color:#000;background:none;font-size:12pt;text-align:left;}h1,h2,h3,h4,h5,h6{font-family:Helvetica;}h1{font-size:19pt;}h2{font-size:17pt;}h3{font-size:15pt;}h4,h5,h6{font-size:12pt;}pre,code,samp{font:10ptCourier,monospace;white-space:pre-wrap;page-break-inside:avoid;}blockquote{margin:1.3em;padding:1em;font-size:10pt;}hr{background-color:#ccc;}aimg{border:none;}a:link,a:visited{background:transparent;font-weight:700;text-decoration:underline;color:#333;}a:link:after,a{color:#000;}table{margin:1px;text-align:left;}th{border-bottom:1pxsolid#333;font-weight:bold;}td{border-bottom:1pxsolid#333;}th,td{padding:4px10px4px0;}tfoot{font-style:italic;}caption{background:#fff;margin-bottom:2em;text-align:left;}thead{display:table-header-group;}tr{page-break-inside:avoid;}#header,.header,#footer,.footer,#navbar,.navbar,#navigation,.navigation,#rightSideBar,.rightSideBar,#leftSideBar,.leftSideBar{display:none;}'
+
+class Printing(QObject):
+    def __init__(self, spine, preview):
+        if QApplication.instance() is None:
+            QApplication([])
+        QObject.__init__(self)
+        self.loop = QEventLoop()
+
+        self.view = QWebView()
+        if preview:
+            self.connect(self.view, SIGNAL('loadFinished(bool)'), self.print_preview)
+        else:
+            self.connect(self.view, SIGNAL('loadFinished(bool)'), self.print_book)
+        
+        self.process_content(spine)
+        
+    def process_content(self, spine):
+        content = ''
+        
+        for path in spine:
+            raw = self.raw_content(path)
+            content += self.parsed_content(raw, path)
+            
+        refined_content = self.refine_content(content)
+        
+        base = os.path.splitdrive(spine[0])[0]
+        base = base if base != '' else '/'
+
+        QMetaObject.invokeMethod(self, "load_content", Qt.QueuedConnection, Q_ARG('QString', refined_content), Q_ARG('QString', base))
+        self.loop.exec_()
+
+    @QtCore.pyqtSignature('load_content(QString, QString)')
+    def load_content(self, content, base):
+        self.view.setHtml(content, QUrl(base))
+            
+    def raw_content(self, path):
+        return open(path, 'rb').read().decode(path.encoding)
+
+    def parsed_content(self, raw_content, path):
+        dom_tree = BeautifulSoup(raw_content).body
+
+        # Remove sytle information that is applied to the entire document.
+        # This does not remove styles applied within a tag.
+        styles = dom_tree.findAll('style')
+        for s in styles:
+            s.extract()
+            
+        scripts = dom_tree.findAll('script')
+        for s in scripts:
+            s.extract()
+            
+        # Convert all relative links to absolute paths.
+        links = dom_tree.findAll(src=True)
+        for s in links:
+            if QUrl(s['src']).isRelative():
+                s['src'] = urlparse.urljoin(path, s['src'])
+        links = dom_tree.findAll(href=True)
+        for s in links:
+            if QUrl(s['href']).isRelative():
+                s['href'] = urlparse.urljoin(path, s['href'])
+
+        return unicode(dom_tree)
+
+    # Adds the begenning and endings tags to the document.
+    # Adds the print css.
+    def refine_content(self, content):
+        dom_tree = BeautifulSoup('<html><head></head><body>%s</body></html>' % content)
+        
+        css = dom_tree.findAll('link')
+        for c in css:
+            c.extract()
+        
+        print_css = Tag(BeautifulSoup(), 'style', [('type', 'text/css'), ('title', 'override_css')])
+        print_css.insert(0, PRINTCSS)
+        dom_tree.findAll('head')[0].insert(0, print_css)
+        
+        return unicode(dom_tree)
+
+    def print_preview(self, ok):
+        printer = QPrinter(QPrinter.HighResolution)
+        printer.setPageMargins(1, 1, 1, 1, QPrinter.Inch)
+        
+        previewDialog = QPrintPreviewDialog(printer)
+        
+        self.connect(previewDialog, SIGNAL('paintRequested(QPrinter *)'), self.view.print_)
+        previewDialog.exec_()
+        self.disconnect(previewDialog, SIGNAL('paintRequested(QPrinter *)'), self.view.print_)
+        
+        self.loop.quit()
+        
+    def print_book(self, ok):
+        printer = QPrinter(QPrinter.HighResolution)
+        printer.setPageMargins(1, 1, 1, 1, QPrinter.Inch)
+        
+        printDialog = QPrintDialog(printer)
+        printDialog.setWindowTitle(_("Print eBook"))
+        
+        printDialog.exec_()
+        if printDialog.result() == QDialog.Accepted:
+            self.view.print_(printer)
+            
+        self.loop.quit()
+
+def main():
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())
+

src/calibre/linux.py

@@ -60,6 +60,7 @@ entry_points = {
              'calibre-parallel   = calibre.parallel:main',
              'calibre-customize  = calibre.customize.ui:main',                             
 		     'pdftrim            = calibre.ebooks.pdf.pdftrim:main' ,
+             'any2pdf  = calibre.ebooks.pdf.from_any:main',
                            ],
         'gui_scripts'    : [
             __appname__+' = calibre.gui2.main:main',

src/calibre/parallel.py

@@ -71,6 +71,9 @@ PARALLEL_FUNCS = {
       'any2mobi'     :
         ('calibre.ebooks.mobi.from_any', 'any2mobi', {}, None),
         
+      'any2pdf'     :
+        ('calibre.ebooks.pdf.from_any', 'any2pdf', {}, None),        
+        
       'feeds2mobi'   :
         ('calibre.ebooks.mobi.from_feeds', 'main', {}, 'notification'),