Add option to use XEP-0392 for tab names/numbers in the infobar

This will autocolour the tabs based on their name (typically the
JID) if a new message or highlight occured. If it was a normal
new message, the colouring will be subtle (foreground instead of
background), otherwise (on a highlight or 1:1 message), the
colouring will affect the background and thus stand out much more.

poezio/config.py

@@ -48,6 +48,7 @@ DEFAULT_CONFIG: ConfigDict = {
         'after_completion': ',',
         'alternative_nickname': '',
         'auto_reconnect': True,
+        'autocolor_tab_names': False,
         'autorejoin_delay': '5',
         'autorejoin': False,
         'beep_on': 'highlight private invite disconnect',

poezio/theming.py

@@ -233,6 +233,11 @@ class Theme:
     COLOR_TAB_ATTENTION = (7, 1)
     COLOR_TAB_DISCONNECTED = (7, 8)
 
+    # If autocolor_tab_names is set to true, the following modes are used to
+    # distinguish tabs with normal and important messages.
+    MODE_TAB_NORMAL = ''
+    MODE_TAB_IMPORTANT = 'r'  # reverse video mode
+
     COLOR_VERTICAL_TAB_NORMAL = (4, -1)
     COLOR_VERTICAL_TAB_NONEMPTY = (4, -1)
     COLOR_VERTICAL_TAB_JOINED = (82, -1)

poezio/windows/info_bar.py

@@ -15,6 +15,7 @@ from poezio.config import config
 from poezio.windows.base_wins import Win
 from poezio.theming import get_theme, to_curses_attr
 from poezio.common import unique_prefix_of
+from poezio.colors import ccg_text_to_color
 
 log = logging.getLogger(__name__)
 
@@ -38,6 +39,7 @@ class GlobalInfoBar(Win):
         use_nicks = config.getbool('use_tab_nicks')
         show_inactive = config.getbool('show_inactive_tabs')
         unique_prefix_tab_names = config.getbool('unique_prefix_tab_names')
+        autocolor_tab_names = config.getbool('autocolor_tab_names')
 
         if unique_prefix_tab_names:
             unique_prefixes: List[Optional[str]] = [None] * len(self.core.tabs)
@@ -73,6 +75,24 @@ class GlobalInfoBar(Win):
             if not show_inactive and color is theme.COLOR_TAB_NORMAL and (
                     tab.priority < 0):
                 continue
+            if autocolor_tab_names:
+                # TODO: in case of private MUC conversations, we should try to
+                # get hold of more information to make the colour the same as
+                # the nickname colour in the MUC.
+                fgcolor, bgcolor, *flags = color
+                # this is fugly, but I’m not sure how to improve it... since
+                # apparently the state is only kept in the color -.-
+                if (color == theme.COLOR_TAB_HIGHLIGHT or
+                        color == theme.COLOR_TAB_PRIVATE):
+                    fgcolor = ccg_text_to_color(theme.ccg_palette, tab.name)
+                    bgcolor = -1
+                    flags = theme.MODE_TAB_IMPORTANT
+                elif color == theme.COLOR_TAB_NEW_MESSAGE:
+                    fgcolor = ccg_text_to_color(theme.ccg_palette, tab.name)
+                    bgcolor = -1
+                    flags = theme.MODE_TAB_NORMAL
+
+                color = (fgcolor, bgcolor) + tuple(flags)
             try:
                 if show_nums or not show_names:
                     self.addstr("%s" % str(nb), to_curses_attr(color))