gmoccapy: add font filter for popup messages font chooser

Author: hansu

src/emc/usr_intf/gmoccapy/gmoccapy.glade

@@ -4512,7 +4512,7 @@ clicking on the DRO</property>
                                 <property name="hexpand">False</property>
                                 <property name="label-xalign">0.5</property>
                                 <child>
-                                  <!-- n-columns=2 n-rows=7 -->
+                                  <!-- n-columns=2 n-rows=8 -->
                                   <object class="GtkGrid" id="grid_messages_style">
                                     <property name="visible">True</property>
                                     <property name="can-focus">False</property>
@@ -4691,7 +4691,7 @@ will be in a frame.</property>
                                       </object>
                                       <packing>
                                         <property name="left-attach">0</property>
-                                        <property name="top-attach">5</property>
+                                        <property name="top-attach">6</property>
                                         <property name="width">2</property>
                                       </packing>
                                     </child>
@@ -4708,10 +4708,44 @@ to test your settings.</property>
                                       </object>
                                       <packing>
                                         <property name="left-attach">0</property>
-                                        <property name="top-attach">6</property>
+                                        <property name="top-attach">7</property>
                                         <property name="width">2</property>
                                       </packing>
                                     </child>
+                                    <child>
+                                      <object class="GtkLabel" id="lbl_messages_font_filter">
+                                        <property name="visible">True</property>
+                                        <property name="can-focus">False</property>
+                                        <property name="margin-start">3</property>
+                                        <property name="hexpand">True</property>
+                                        <property name="label" translatable="yes">Font filter</property>
+                                        <property name="xalign">0</property>
+                                      </object>
+                                      <packing>
+                                        <property name="left-attach">0</property>
+                                        <property name="top-attach">5</property>
+                                      </packing>
+                                    </child>
+                                    <child>
+                                      <object class="GtkComboBoxText" id="cmb_messages_font_face">
+                                        <property name="visible">True</property>
+                                        <property name="can-focus">False</property>
+                                        <property name="active">0</property>
+                                        <items>
+                                          <item id="0">All</item>
+                                          <item id="1">Regular</item>
+                                          <item id="2">Bold</item>
+                                          <item id="3">Medium</item>
+                                          <item id="4">Book</item>
+                                          <item id="5">Italic</item>
+                                        </items>
+                                        <signal name="changed" handler="on_cmb_messages_font_face_changed" swapped="no"/>
+                                      </object>
+                                      <packing>
+                                        <property name="left-attach">1</property>
+                                        <property name="top-attach">5</property>
+                                      </packing>
+                                    </child>
                                   </object>
                                 </child>
                                 <child type="label">

src/emc/usr_intf/gmoccapy/gmoccapy.py

@@ -2167,9 +2167,19 @@ def _gcodeview_font_filter(self, family, face, monospace, regular):
         reg = not regular or face.get_face_name()=="Regular" or face.get_face_name()=="Medium" or face.get_face_name()=="Book"
         return mono and reg
 
+    # Filter function for messages font selection
+    def _messages_font_filter(self, family, face, wanted_face):
+        if wanted_face == "All":
+            return True
+        else:
+            return face.get_face_name() == wanted_face
+    
     def _update_gcodeview_font_filter(self):
         self.widgets.fontbutton_gcodeview.set_filter_func(self._gcodeview_font_filter, self.widgets.chk_font_monospace.get_active(), self.widgets.chk_font_regular.get_active())
 
+    def _update_messages_font_filter(self):
+        self.widgets.fontbutton_popup.set_filter_func(self._messages_font_filter, self.widgets.cmb_messages_font_face.get_active_text())
+    
 
     def _init_audio(self):
         # try to add ability for audio feedback to user.
@@ -4056,6 +4066,9 @@ def on_chk_use_frames_toggled(self, widget, data=None):
     def on_fontbutton_popup_font_set(self, font):
         self.prefs.putpref("message_font", self.widgets.fontbutton_popup.get_font())
         self._init_notification()
+        
+    def on_cmb_messages_font_face_changed(self, widget):
+        self._update_messages_font_filter()
 
     def on_fontbutton_gcodeview_font_set(self, widget):
         self.widgets.gcode_view.modify_font(widget.get_font_desc())