[core/theme] Add support for foreground and background colors

Themes can now define "fg" and "bg" attributes that are used for
foreground (text) color and background color.

see #23

bumblebee/output.py

@@ -53,7 +53,9 @@ class I3BarOutput(object):
         if suffix:
             full_text = u"{}{}".format(full_text, suffix)
         self._widgets.append({
-            u"full_text": u"{}".format(full_text)
+            u"full_text": u"{}".format(full_text),
+            "color": self._theme.fg(widget),
+            "background": self._theme.bg(widget),
         })
 
     def begin(self):

bumblebee/theme.py

@@ -30,6 +30,14 @@ class Theme(object):
         """Return the theme suffix for a widget's full text"""
         return self._get(widget, "suffix", None)
 
+    def fg(self, widget):
+        """Return the foreground color for this widget"""
+        return self._get(widget, "fg", None)
+
+    def bg(self, widget):
+        """Return the background color for this widget"""
+        return self._get(widget, "bg", None)
+
     def loads(self, data):
         """Initialize the theme from a JSON string"""
         theme = json.loads(data)

tests/test_i3baroutput.py

@@ -19,6 +19,8 @@ class TestI3BarOutput(unittest.TestCase):
         self.expectedStart = json.dumps({"version": 1, "click_events": True}) + "[\n"
         self.expectedStop = "]\n"
         self.someWidget = MockWidget("foo bar baz")
+        self.anyColor = "#ababab"
+        self.anotherColor = "#cccccc"
 
     @mock.patch("sys.stdout", new_callable=StringIO)
     def test_start(self, stdout):
@@ -89,4 +91,14 @@ class TestI3BarOutput(unittest.TestCase):
             self.theme.suffix(self.someWidget)
         ))
 
+    @mock.patch("sys.stdout", new_callable=StringIO)
+    def test_colors(self, stdout):
+        self.theme.set_fg(self.anyColor)
+        self.theme.set_bg(self.anotherColor)
+        self.output.draw(self.someWidget)
+        self.output.flush()
+        result = json.loads(stdout.getvalue())[0]
+        self.assertEquals(result["color"], self.anyColor)
+        self.assertEquals(result["background"], self.anotherColor)
+
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

tests/test_theme.py

@@ -14,10 +14,14 @@ class TestTheme(unittest.TestCase):
         self.theme = Theme(self.validThemeName)
 
         self.widgetTheme = "test-widget"
+        self.defaultColor = "#000000"
+        self.defaultBgColor = "#111111"
+        self.widgetBgColor = "#222222"
         self.defaultPrefix = "default-prefix"
         self.defaultSuffix = "default-suffix"
         self.widgetPrefix = "widget-prefix"
         self.widgetSuffix = "widget-suffix"
+        self.widgetColor = "#ababab"
 
     def test_load_valid_theme(self):
         try:
@@ -43,4 +47,14 @@ class TestTheme(unittest.TestCase):
         self.someWidget.set_module(self.widgetTheme)
         self.assertEquals(self.theme.prefix(self.someWidget), self.widgetPrefix)
 
+    def test_widget_fg(self):
+        self.assertEquals(self.theme.fg(self.someWidget), self.defaultColor)
+        self.someWidget.set_module(self.widgetTheme)
+        self.assertEquals(self.theme.fg(self.someWidget), self.widgetColor)
+
+    def test_widget_bg(self):
+        self.assertEquals(self.theme.bg(self.someWidget), self.defaultBgColor)
+        self.someWidget.set_module(self.widgetTheme)
+        self.assertEquals(self.theme.bg(self.someWidget), self.widgetBgColor)
+
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

tests/util.py

@@ -49,6 +49,8 @@ class MockTheme(object):
     def __init__(self):
         self._prefix = None
         self._suffix = None
+        self._fg = None
+        self._bg = None
 
     def set_prefix(self, value):
         self._prefix = value
@@ -56,10 +58,22 @@ class MockTheme(object):
     def set_suffix(self, value):
         self._suffix = value
 
+    def set_fg(self, value):
+        self._fg = value
+
+    def set_bg(self, value):
+        self._bg = value
+
     def prefix(self, widget):
         return self._prefix
 
     def suffix(self, widget):
         return self._suffix
 
+    def fg(self, widget):
+        return self._fg
+
+    def bg(self, widget):
+        return self._bg
+
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

themes/test.json

@@ -2,6 +2,12 @@
 	"icons": [ "test" ],
 	"defaults": {
 		"prefix": "default-prefix",
-		"suffix": "default-suffix"
+		"suffix": "default-suffix",
+		"fg": "#000000",
+		"bg": "#111111"
+	},
+	"test-widget": {
+		"fg": "#ababab",
+		"bg": "#222222"
 	}
 }