LRF output:Fix rendering of tables as images

src/calibre/ebooks/lrf/html/convert_from.py

@@ -245,7 +245,6 @@ class HTMLConverter(object, LoggingInterface):
         
         self.override_css = {}
         self.override_pcss = {}
-        self.table_render_job_server = None
          
         if self._override_css is not None:
             if os.access(self._override_css, os.R_OK):
@@ -266,7 +265,6 @@ class HTMLConverter(object, LoggingInterface):
         paths = [os.path.abspath(path) for path in paths]
         paths = [path.decode(sys.getfilesystemencoding()) if not isinstance(path, unicode) else path for path in paths]
         
-        try:
         while len(paths) > 0 and self.link_level <= self.link_levels:
             for path in paths:
                 if path in self.processed_files:
@@ -298,9 +296,6 @@ class HTMLConverter(object, LoggingInterface):
         if self.base_font_size > 0:
             self.log_info('\tRationalizing font sizes...')
             self.book.rationalize_font_sizes(self.base_font_size)
-        finally:
-            if self.table_render_job_server is not None:
-                self.table_render_job_server.killall()
         
     def is_baen(self, soup):
         return bool(soup.find('meta', attrs={'name':'Publisher', 
@@ -1732,15 +1727,11 @@ class HTMLConverter(object, LoggingInterface):
                 self.process_children(tag, tag_css, tag_pseudo_css)
             elif tagname == 'table' and not self.ignore_tables and not self.in_table:
                 if self.render_tables_as_images:
-                    if self.table_render_job_server is None:
-                        from calibre.parallel import Server
-                        self.table_render_job_server = Server(number_of_workers=1)
                     print 'Rendering table...'
                     from calibre.ebooks.lrf.html.table_as_image import render_table
                     pheight = int(self.current_page.pageStyle.attrs['textheight'])
                     pwidth  = int(self.current_page.pageStyle.attrs['textwidth'])
-                    images = render_table(self.table_render_job_server,
-                                          self.soup, tag, tag_css, 
+                    images = render_table(self.soup, tag, tag_css, 
                                           os.path.dirname(self.target_prefix), 
                                           pwidth, pheight, self.profile.dpi, 
                                           self.text_size_multiplier_for_rendered_tables)

src/calibre/ebooks/lrf/html/table_as_image.py

@@ -6,14 +6,11 @@ __docformat__ = 'restructuredtext en'
 '''
 Render HTML tables as images.
 '''
-import os, tempfile, atexit, shutil, time
-from PyQt4.Qt import QUrl, QApplication, QSize, \
+import os, tempfile, atexit, shutil
+from PyQt4.Qt import QUrl, QApplication, QSize, QEventLoop, \
                      SIGNAL, QPainter, QImage, QObject, Qt
 from PyQt4.QtWebKit import QWebPage
 
-from calibre.parallel import ParallelJob
-
-__app = None
 
 class HTMLTableRenderer(QObject):
 
@@ -27,13 +24,15 @@ class HTMLTableRenderer(QObject):
         self.app = None
         self.width, self.height, self.dpi = width, height, dpi
         self.base_dir = base_dir
+        self.images = []
+        self.tdir = tempfile.mkdtemp(prefix='calibre_render_table')
+        self.loop = QEventLoop()
         self.page = QWebPage()
         self.connect(self.page, SIGNAL('loadFinished(bool)'), self.render_html)
         self.page.mainFrame().setTextSizeMultiplier(factor)
         self.page.mainFrame().setHtml(html, 
                                 QUrl('file:'+os.path.abspath(self.base_dir)))
-        self.images = []
-        self.tdir = tempfile.mkdtemp(prefix='calibre_render_table')
+        
         
     def render_html(self, ok):
         try:
@@ -63,7 +62,7 @@ class HTMLTableRenderer(QObject):
         finally:
             QApplication.quit()
         
-def render_table(server, soup, table, css, base_dir, width, height, dpi, factor=1.0):
+def render_table(soup, table, css, base_dir, width, height, dpi, factor=1.0):
     head = ''
     for e in soup.findAll(['link', 'style']):
         head += unicode(e)+'\n\n'
@@ -83,24 +82,13 @@ def render_table(server, soup, table, css, base_dir, width, height, dpi, factor=
     </body>
 </html>
     '''%(head, width-10, style, unicode(table))
-    job = ParallelJob('render_table',  lambda j : j, None,
-                            args=[html, base_dir, width, height, dpi, factor])
-    server.add_job(job)
-    while not job.has_run:
-        time.sleep(2)
-    
-    if job.exception is not None:
-        print 'Failed to render table'
-        print job.exception
-        print job.traceback
-    images, tdir = job.result
+    images, tdir = do_render(html, base_dir, width, height, dpi, factor)
     atexit.register(shutil.rmtree, tdir)
     return images
     
 def do_render(html, base_dir, width, height, dpi, factor):
-    app = QApplication.instance()
-    if app is None:
-        app = QApplication([])
+    if QApplication.instance() is None:
+                QApplication([])
     tr = HTMLTableRenderer(html, base_dir, width, height, dpi, factor)
-    app.exec_()
+    tr.loop.exec_()
     return tr.images, tr.tdir

src/calibre/web/feeds/recipes/recipe_ftd.py

@@ -47,4 +47,3 @@ class FTheiseDe(BasicNewsRecipe):
     feeds =  [ ('FTD', 'http://www.ftd.de/static/ticker/ftd-topnews.rdf') ] 
     
 
-!DSPAM:3,496093f075721028352036!

src/calibre/web/feeds/recipes/recipe_zdnet.py

@@ -44,4 +44,3 @@ class cdnet(BasicNewsRecipe):
 
 
 
-!DSPAM:3,496093f075721028352036!