Use pango markup instead of attributes

Attributes don't work from introspection, so this blocks porting to gtk3.

In MessageColumn, admit that multiple highlighters don't actually work.

debug-viewer/GstDebugViewer/GUI/columns.py

@@ -24,6 +24,7 @@ def _ (s):
 
 import logging
 
+import glib
 import gtk
 
 from GstDebugViewer import Common, Data
@@ -328,30 +329,38 @@ class MessageColumn (TextColumn):
 
     def get_row_data_func (self):
 
-        from pango import AttrList, AttrBackground, AttrForeground
         highlighters = self.highlighters
         id_ = self.id
 
-        # FIXME: This should be none; need to investigate
-        # `cellrenderertext.props.attributes = None' failure (param conversion
-        # error like `treeview.props.model = None').
-        no_attrs = AttrList ()
-
         def message_data_func (props, row):
 
-            props.text = row[id_]
+            msg = row[id_]
+
             if not highlighters:
-                props.attributes = no_attrs
-            for highlighter in highlighters.values ():
-                ranges = highlighter (row)
-                if not ranges:
-                    props.attributes = no_attrs
-                else:
-                    attrlist = AttrList ()
-                    for start, end in ranges:
-                        attrlist.insert (AttrBackground (0, 0, 65535, start, end))
-                        attrlist.insert (AttrForeground (65535, 65535, 65535, start, end))
-                    props.attributes = attrlist
+                props.text = msg
+                return
+
+            if len (highlighters) > 1:
+                raise NotImplementedError ("FIXME: Support more than one...")
+
+            highlighter = highlighters.values ()[0]
+            ranges = highlighter (row)
+            if not ranges:
+                props.text = msg
+            else:
+                tags = []
+                prev_end = 0
+                end = None
+                for start, end in ranges:
+                    if prev_end < start:
+                        tags.append (glib.markup_escape_text (msg[prev_end:start]))
+                    msg_escape = glib.markup_escape_text (msg[start:end])
+                    tags.append ("<span foreground=\'#FFFFFF\'"
+                                 " background=\'#0000FF\'>%s</span>" % (msg_escape,))
+                    prev_end = end
+                if end is not None:
+                    tags.append (glib.markup_escape_text (msg[end:]))
+                props.markup = "".join (tags)
 
         return message_data_func
 

debug-viewer/GstDebugViewer/GUI/window.py

@@ -28,7 +28,7 @@ import os.path
 from bisect import bisect_right, bisect_left
 import logging
 
-import pango
+import glib
 import gobject
 import gtk
 
@@ -846,11 +846,11 @@ class Window (object):
         bar.props.message_type = gtk.MESSAGE_ERROR
         box = bar.get_content_area ()
 
-        attrs = pango.AttrList ()
-        attrs.insert (pango.AttrWeight (pango.WEIGHT_BOLD, 0, len (message1)))
+        markup = "<b>%s</b> %s" % (glib.markup_escape_text (message1),
+                                   glib.markup_escape_text (message2),)
         label = gtk.Label ()
-        label.props.label = "%s %s" % (message1, message2)
-        label.props.attributes = attrs
+        label.props.use_markup = True
+        label.props.label = markup
         label.props.selectable = True
         box.pack_start (label, False, False, 0)
 

debug-viewer/GstDebugViewer/Plugins/FindBar.py

@@ -24,7 +24,7 @@ import logging
 from GstDebugViewer import Common, Data, GUI
 from GstDebugViewer.Plugins import *
 
-import pango
+import glib
 import gtk
 
 class SearchOperation (object):
@@ -152,11 +152,9 @@ class FindBarWidget (gtk.HBox):
         next_action.connect_proxy (next_button)
         self.pack_start (next_button, False, False, 0)
 
-        self.status_label = gtk.Label ("")
+        self.status_label = gtk.Label ()
         self.status_label.props.xalign = 0.
-        attrs = pango.AttrList ()
-        attrs.insert (pango.AttrWeight (pango.WEIGHT_BOLD, 0, -1))
-        self.status_label.props.attributes = attrs
+        self.status_label.props.use_markup = True
         self.pack_start (self.status_label, False, False, 6)
         self.__compute_status_size ()
         self.status_label.connect ("notify::style", self.__handle_notify_style)
@@ -166,7 +164,7 @@ class FindBarWidget (gtk.HBox):
     def __compute_status_size (self):
 
         label = self.status_label
-        old_text = label.props.label
+        old_markup = label.props.label
         label.set_size_request (-1, -1)
         max_width = 0
         try:
@@ -176,7 +174,7 @@ class FindBarWidget (gtk.HBox):
                 max_width = max (max_width, width)
             label.set_size_request (max_width, -1)
         finally:
-            label.props.label = old_text
+            label.props.label = old_markup
 
     def __handle_notify_style (self, *a, **kw):
 
@@ -184,7 +182,9 @@ class FindBarWidget (gtk.HBox):
 
     def __set_status (self, text):
 
-        self.status_label.props.label = text
+        markup = "<b>%s</b>" % (glib.markup_escape_text (text),)
+
+        self.status_label.props.label = markup
 
     def status_no_match_found (self):