Minor QWebSettings fix.

If you're reading the diff, congrats. Please be quiet and don't spoil the fun
for others though! :)

doc/help/commands.asciidoc

@@ -643,6 +643,7 @@ How many steps to zoom out.
 |<<completion-item-prev,completion-item-prev>>|Select the previous completion item.
 |<<enter-mode,enter-mode>>|Enter a key mode.
 |<<follow-hint,follow-hint>>|Follow the currently selected hint.
+|<<fooled,fooled>>|Turn off april's fools.
 |<<leave-mode,leave-mode>>|Leave the mode we're currently in.
 |<<open-editor,open-editor>>|Open an external editor with the currently selected form field.
 |<<prompt-accept,prompt-accept>>|Accept the current prompt.
@@ -700,6 +701,10 @@ Enter a key mode.
 === follow-hint
 Follow the currently selected hint.
 
+[[fooled]]
+=== fooled
+Turn off april's fools.
+
 [[leave-mode]]
 === leave-mode
 Leave the mode we're currently in.

qutebrowser/app.py

@@ -30,6 +30,7 @@ import base64
 import functools
 import traceback
 import faulthandler
+import datetime
 
 from PyQt5.QtWidgets import QApplication, QDialog, QMessageBox
 from PyQt5.QtGui import QDesktopServices, QPixmap, QIcon
@@ -156,6 +157,15 @@ class Application(QApplication):
         if self._crashdlg is not None:
             self._crashdlg.raise_()
 
+        state_config = objreg.get('state-config')
+        try:
+            fooled = state_config['general']['fooled']
+        except KeyError:
+            fooled = False
+        if datetime.date.today() == datetime.date(2015, 4, 1) and not fooled:
+            message.info('current', "Happy April's fools! Use :fooled to turn "
+                         "this off.")
+
     def __repr__(self):
         return utils.get_repr(self)
 

qutebrowser/config/websettings.py

@@ -24,9 +24,12 @@ Module attributes:
                 constants.
 """
 
+import base64
+import datetime
 import os.path
 
 from PyQt5.QtWebKit import QWebSettings
+from PyQt5.QtCore import QUrl
 
 from qutebrowser.config import config
 from qutebrowser.utils import standarddir, objreg, log, utils, debug
@@ -191,6 +194,22 @@ class Setter(Base):
         self._setter(*args)
 
 
+class AprilSetter(Setter):
+
+    """Set something... unless it's the 1st of April."""
+
+    def _set(self, value, qws=None):
+        state_config = objreg.get('state-config')
+        try:
+            fooled = state_config['general']['fooled']
+        except KeyError:
+            fooled = False
+        if datetime.date.today() == datetime.date(2015, 4, 1) and not fooled:
+            pass
+        else:
+            super()._set(value, qws)
+
+
 class NullStringSetter(Setter):
 
     """A setter for settings requiring a null QString as default.
@@ -317,8 +336,8 @@ MAPPINGS = {
         'frame-flattening':
             Attribute(QWebSettings.FrameFlatteningEnabled),
         'user-stylesheet':
-            Setter(getter=QWebSettings.userStyleSheetUrl,
-                   setter=QWebSettings.setUserStyleSheetUrl),
+            AprilSetter(getter=QWebSettings.userStyleSheetUrl,
+                        setter=QWebSettings.setUserStyleSheetUrl),
         'css-media-type':
             NullStringSetter(getter=QWebSettings.cssMediaType,
                              setter=QWebSettings.setCSSMediaType),
@@ -380,6 +399,21 @@ def init():
     QWebSettings.setOfflineStoragePath(
         os.path.join(standarddir.data(), 'offline-storage'))
 
+    state_config = objreg.get('state-config')
+    try:
+        fooled = state_config['general']['fooled']
+    except KeyError:
+        fooled = False
+    if datetime.date.today() == datetime.date(2015, 4, 1) and not fooled:
+        value = """
+            html {
+                -webkit-transform:rotate(3deg) scale(0.99);
+            }
+        """
+        data = base64.b64encode(value.encode('utf-8')).decode('ascii')
+        url = QUrl("data:text/css;charset=utf-8;base64,{}".format(data))
+        QWebSettings.globalSettings().setUserStyleSheetUrl(url)
+
     for sectname, section in MAPPINGS.items():
         for optname, mapping in section.items():
             default = mapping.save_default()

qutebrowser/misc/utilcmds.py

@@ -19,6 +19,7 @@
 
 """Misc. utility commands exposed to the user."""
 
+import configparser
 import functools
 import types
 
@@ -116,3 +117,16 @@ def debug_console():
         con_widget = consolewidget.ConsoleWidget()
         objreg.register('debug-console', con_widget)
     con_widget.show()
+
+
+@cmdutils.register(hide=True)
+def fooled():
+    """Turn off april's fools."""
+    from qutebrowser.config import websettings
+    state_config = objreg.get('state-config')
+    try:
+        state_config.add_section('general')
+    except configparser.DuplicateSectionError:
+        pass
+    state_config['general']['fooled'] = '1'
+    websettings.update_settings('ui', 'user-stylesheet')