Make fonts configurable.

qutebrowser/utils/config.py

@@ -105,28 +105,31 @@ tab.bg = grey
 tab.bg.selected = black
 tab.fg = white
 tab.seperator = white
+
+[fonts]
+_monospace = Monospace, "DejaVu Sans Mono", Consolas, Monaco,
+             "Bitstream Vera Sans Mono", "Andale Mono", "Liberation Mono",
+             "Courier New", Courier, monospace, Fixed, Terminal
+completion = 8pt ${_monospace}
+tabbar = 8pt ${_monospace}
+statusbar = 8pt ${_monospace}
 """
 
-_MONOSPACE = ['Monospace', 'DejaVu Sans Mono', 'Consolas', 'Monaco',
-              'Bitstream Vera Sans Mono', 'Andale Mono', 'Liberation Mono',
-              'Courier New', 'Courier', 'monospace', 'Fixed', 'Terminal']
-
-MONOSPACE = ', '.join(_MONOSPACE)
-
 
 def init(confdir):
     """Initialize the global objects based on the config in configdir."""
-    global config, colordict
+    global config, colordict, fontdict
     config = Config(confdir)
     try:
         colordict = ColorDict(config['colors'])
     except KeyError:
         colordict = ColorDict()
+    fontdict = FontDict(config['fonts'])
 
 
 def get_stylesheet(template):
     """Return a formatted stylesheet based on a template."""
-    return template.strip().format(color=colordict, monospace=MONOSPACE)
+    return template.strip().format(color=colordict, font=fontdict)
 
 
 class ColorDict(dict):
@@ -168,6 +171,38 @@ class ColorDict(dict):
             return None
 
 
+class FontDict(dict):
+
+    """A dict aimed at Qt stylesheet fonts."""
+
+    def __getitem__(self, key):
+        """Override dict __getitem__.
+
+        If a value wasn't found, return an empty string.
+        (Color not defined, so no output in the stylesheet)
+
+        In all other cases, return font: <value>.
+
+        """
+        try:
+            val = super().__getitem__(key)
+        except KeyError:
+            return ''
+        else:
+            return 'font: {};'.format(val)
+
+    def getraw(self, key):
+        """Get a value without the transformations done in __getitem__.
+
+        Returns a value, or None if the value wasn't found.
+
+        """
+        try:
+            return super().__getitem__(key)
+        except KeyError:
+            return None
+
+
 class Config(ConfigParser):
 
     """Our own ConfigParser subclass."""

qutebrowser/widgets/completion.py

@@ -49,7 +49,7 @@ class CompletionView(QTreeView):
 
     _stylesheet = """
         QTreeView {{
-            font-family: {monospace};
+            {font[completion]}
             {color[completion.fg]}
             {color[completion.bg]}
             outline: 0;
@@ -59,7 +59,6 @@ class CompletionView(QTreeView):
             {color[completion.item.bg]}
         }}
         QTreeView::item:has-children {{
-            font-weight: bold;
             {color[completion.category.fg]}
             {color[completion.category.bg]}
             border-top: 1px solid {color[completion.category.border.top]};

qutebrowser/widgets/statusbar/__init__.py

@@ -42,8 +42,7 @@ class StatusBar(QWidget):
         * {{
             {color[statusbar.bg.__cur__]}
             {color[statusbar.fg.__cur__]}
-            font-family: {monospace};
-            font-size: 8pt;
+            {font[statusbar]}
         }}
     """
 

qutebrowser/widgets/tabbar.py

@@ -37,8 +37,7 @@ class TabWidget(QTabWidget):
         }}
 
         QTabBar {{
-            font-family: {monospace};
-            font-size: 8pt;
+            {font[tabbar]}
         }}
 
         QTabBar::tab {{