Allow user to set a base Qt window style and the font (family and size only)

src/bitmessageqt/__init__.py

@@ -4241,6 +4241,15 @@ class BitmessageQtApplication(QtGui.QApplication):
         QtCore.QCoreApplication.setOrganizationDomain("bitmessage.org")
         QtCore.QCoreApplication.setApplicationName("pybitmessageqt")
 
+        self.setStyle(
+            config.safeGet('bitmessagesettings', 'windowstyle', 'GTK+'))
+
+        font = config.safeGet('bitmessagesettings', 'font')
+        if font:
+            # family, size, weight = font.split(',')
+            family, size = font.split(',')
+            self.setFont(QtGui.QFont(family, int(size)))
+
         self.server = None
         self.is_running = False
 

src/bitmessageqt/settings.py

@@ -49,6 +49,7 @@ class SettingsDialog(QtGui.QDialog):
         self.firstrun = firstrun
         self.config = config_obj
         self.net_restart_needed = False
+        self.font_setting = None
         self.timer = QtCore.QTimer()
 
         if self.config.safeGetBoolean('bitmessagesettings', 'dontconnect'):
@@ -85,6 +86,16 @@ class SettingsDialog(QtGui.QDialog):
     def adjust_from_config(self, config):
         """Adjust all widgets state according to config settings"""
         # pylint: disable=too-many-branches,too-many-statements
+
+        current_style = config.safeGet(
+            'bitmessagesettings', 'windowstyle', 'GTK+')
+        for i, sk in enumerate(QtGui.QStyleFactory.keys()):
+            self.comboBoxStyle.addItem(sk)
+            if sk == current_style:
+                self.comboBoxStyle.setCurrentIndex(i)
+
+        self.save_font_setting(QtGui.QApplication.instance().font())
+
         if not self.parent.tray.isSystemTrayAvailable():
             self.groupBoxTray.setEnabled(False)
             self.groupBoxTray.setTitle(_translate(
@@ -322,6 +333,18 @@ class SettingsDialog(QtGui.QDialog):
         if status == 'success':
             self.parent.namecoin = nc
 
+    def save_font_setting(self, font):
+        """Save user font setting and set the buttonFont text"""
+        font_setting = (font.family(), font.pointSize())
+        self.buttonFont.setText('{} {}'.format(*font_setting))
+        self.font_setting = '{},{}'.format(*font_setting)
+
+    def choose_font(self):
+        """Show the font selection dialog"""
+        font, valid = QtGui.QFontDialog.getFont()
+        if valid:
+            self.save_font_setting(font)
+
     def accept(self):
         """A callback for accepted event of buttonBox (OK button pressed)"""
         # pylint: disable=too-many-branches,too-many-statements
@@ -348,6 +371,22 @@ class SettingsDialog(QtGui.QDialog):
         self.config.set('bitmessagesettings', 'replybelow', str(
             self.checkBoxReplyBelow.isChecked()))
 
+        window_style = str(self.comboBoxStyle.currentText())
+        if self.config.safeGet(
+            'bitmessagesettings', 'windowstyle', 'GTK+'
+        ) != window_style or self.config.safeGet(
+            'bitmessagesettings', 'font'
+        ) != self.font_setting:
+            self.config.set('bitmessagesettings', 'windowstyle', window_style)
+            self.config.set('bitmessagesettings', 'font', self.font_setting)
+            queues.UISignalQueue.put((
+                'updateStatusBar', (
+                    _translate(
+                        "MainWindow",
+                        "You need to restart the application to apply"
+                        " the window style or default font."), 1)
+            ))
+
         lang = str(self.languageComboBox.itemData(
             self.languageComboBox.currentIndex()).toString())
         self.config.set('bitmessagesettings', 'userlocale', lang)

src/bitmessageqt/settings.ui

@@ -147,6 +147,32 @@
          </property>
         </widget>
        </item>
+       <item row="9" column="0">
+        <widget class="QGroupBox" name="groupBoxStyle">
+         <property name="title">
+          <string>Custom Style</string>
+         </property>
+         <layout class="QHBoxLayout">
+          <item>
+           <widget class="QComboBox" name="comboBoxStyle">
+            <property name="minimumSize">
+             <size>
+              <width>100</width>
+              <height>0</height>
+             </size>
+            </property>
+           </widget>
+          </item>
+	  <item>
+           <widget class="QPushButton" name="buttonFont">
+            <property name="text">
+             <string>Font</string>
+            </property>
+           </widget>
+          </item>
+	 </layout>
+        </widget>
+       </item>
        <item row="9" column="1">
         <widget class="QGroupBox" name="groupBox">
          <property name="title">
@@ -1202,5 +1228,11 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>buttonFont</sender>
+   <signal>clicked()</signal>
+   <receiver>settingsDialog</receiver>
+   <slot>choose_font</slot>
+  </connection>
  </connections>
 </ui>