part 2 basedoc: move BaseDoc.py to /gen/plug/docgen and add /gen/plug/docbackend

that was missing in part 1 
 Still to come: makefiles and splitting new basedoc.py in small files


svn: r12591

src/gen/plug/docbackend/cairobackend.py

@@ -0,0 +1,105 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2009 Benny Malengier
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+# $Id: docbackend.py 12437 2009-04-13 02:11:49Z pez4brian $
+
+"""File and File format management for the different reports
+"""
+
+#------------------------------------------------------------------------
+#
+# Python modules
+#
+#------------------------------------------------------------------------
+from xml.sax.saxutils import escape
+
+#-------------------------------------------------------------------------
+#
+# GTK modules
+#
+#-------------------------------------------------------------------------
+
+#------------------------------------------------------------------------
+#
+# Gramps modules
+#
+#------------------------------------------------------------------------
+from docbackend import DocBackend
+
+#------------------------------------------------------------------------
+#
+# Set up logging
+#
+#------------------------------------------------------------------------
+import logging
+log = logging.getLogger(".cairobackend.py")
+
+#------------------------------------------------------------------------
+#
+# Document Backend class for cairo docs
+#
+#------------------------------------------------------------------------
+
+class CairoBackend(DocBackend):
+    """
+    Implementation for cairo docs
+    """
+    
+    STYLETAG_TO_PROPERTY = {
+        DocBackend.FONTCOLOR : 'foreground',
+        DocBackend.HIGHLIGHT : 'background',
+        DocBackend.FONTFACE  : 'face',
+        DocBackend.FONTSIZE  : 'size',
+    }
+
+    # overwrite base class attributes, they become static var of CairoDoc
+    SUPPORTED_MARKUP = [
+            DocBackend.BOLD,
+            DocBackend.ITALIC,
+            DocBackend.UNDERLINE,
+            DocBackend.FONTFACE,
+            DocBackend.FONTSIZE,
+            DocBackend.FONTCOLOR,
+            DocBackend.HIGHLIGHT,
+            DocBackend.SUPERSCRIPT ]
+
+    STYLETAG_MARKUP = {
+        DocBackend.BOLD        : ("<b>", "</b>"),
+        DocBackend.ITALIC      : ("<i>", "</i>"),
+        DocBackend.UNDERLINE   : ("<u>", "</u>"),
+        DocBackend.SUPERSCRIPT : ("<sup>", "</sup>"),
+    }
+    
+    ESCAPE_FUNC = lambda x: escape
+
+    def _create_xmltag(self, type, value):
+        """
+        overwrites the method in DocBackend
+        creates the pango xml tags needed for non bool style types
+        """
+        if type not in self.SUPPORTED_MARKUP:
+            return None
+        if type == DocBackend.FONTSIZE:
+            #size is in thousandths of a point in pango
+            value = str(1000 * value)
+        
+        return ('<span %s="%s">' % (self.STYLETAG_TO_PROPERTY[type], 
+                                    self.ESCAPE_FUNC()(value)), 
+                '</span>')