[gnome-maps/wip/mlundblad/gtk4-and-shumate] WIP: Port to GTK 4 and Shumate



commit c5fec950401ebceea1948bbce4118166640d87cd
Author: Marcus Lundblad <ml update uu se>
Date:   Fri Jul 3 00:10:01 2020 +0200

    WIP: Port to GTK 4 and Shumate

 data/ui/main-window.ui           |  26 +--
 data/ui/sidebar.ui               | 340 +++++++++++++++++----------------------
 data/ui/transit-options-panel.ui |  91 +++++------
 src/application.js               |  13 +-
 src/contextMenu.js               |   8 +-
 src/main.js                      |  10 +-
 src/mainWindow.js                |   4 +-
 src/mapSource.js                 |  33 ++--
 src/mapView.js                   |  99 ++++++------
 src/osmAccountDialog.js          |   3 +-
 src/photonParser.js              |   3 +-
 src/sendToDialog.js              |   3 +-
 src/sidebar.js                   |   3 +-
 src/transitOptionsPanel.js       |  16 +-
 src/utils.js                     |   9 +-
 15 files changed, 305 insertions(+), 356 deletions(-)
---
diff --git a/data/ui/main-window.ui b/data/ui/main-window.ui
index c3daf4d3..5b8a0b85 100644
--- a/data/ui/main-window.ui
+++ b/data/ui/main-window.ui
@@ -30,13 +30,11 @@
   <template class="Gjs_MainWindow" parent="GtkApplicationWindow">
     <property name="width-request">300</property>
     <property name="height-request">500</property>
-    <property name="window-position">center</property>
     <property name="title" translatable="yes">Maps</property>
     <child type="titlebar">
       <object class="GtkHeaderBar" id="headerBar">
         <property name="visible">True</property>
         <property name="can-focus">False</property>
-        <property name="show-close-button">True</property>
         <style>
           <class name="titlebar"/>
         </style>
@@ -46,7 +44,8 @@
             <property name="halign">end</property>
             <property name="valign">center</property>
             <property name="menu-model">hamburgerMenu</property>
-            <accelerator key="F10" signal="clicked"/>
+            <!-- TODO: shortcut for main menu...-->
+            <!--<accelerator key="F10" signal="clicked"/>-->
             <child internal-child="accessible">
               <object class="AtkObject">
                 <property name="accessible-name" translatable="yes">Primary menu</property>
@@ -63,9 +62,6 @@
               </object>
             </child>
           </object>
-          <packing>
-            <property name="pack-type">end</property>
-          </packing>
         </child>
       </object>
     </child>
@@ -86,7 +82,7 @@
             <child>
               <object class="GtkSpinner" id="network-spinner">
                 <property name="visible">True</property>
-                <property name="active">True</property>
+                <property name="spinning">True</property>
               </object>
             </child>
             <child>
@@ -97,7 +93,11 @@
                 <property name="halign">center</property>
                 <property name="valign">center</property>
                 <property name="row_spacing">6</property>
-                <property name="margin">18</property>
+                <property name="margin-start">18</property>
+                <property name="margin-end">18</property>
+                <property name="margin-top">18</property>
+                <property name="margin-bottom">18</property>
+
                 <child>
                   <object class="GtkImage" id="no-network-conn-image">
                     <property name="visible">True</property>
@@ -145,12 +145,12 @@
                 <property name="visible">True</property>
               </object>
             </child>
+            <layout>
+              <property name="left-attach">0</property>
+              <property name="top-attach">1</property>
+              <property name="column-span">2</property>
+            </layout>
           </object>
-          <packing>
-            <property name="left-attach">0</property>
-            <property name="top-attach">1</property>
-            <property name="width">2</property>
-          </packing>
         </child>
       </object>
     </child>
diff --git a/data/ui/sidebar.ui b/data/ui/sidebar.ui
index ab7b3890..f542e573 100644
--- a/data/ui/sidebar.ui
+++ b/data/ui/sidebar.ui
@@ -1,46 +1,37 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.18.3 -->
 <interface>
   <requires lib="gtk+" version="3.10"/>
   <template class="Gjs_Sidebar" parent="GtkRevealer">
-    <property name="visible">True</property>
     <property name="transition_type">slide-left</property>
     <property name="transition_duration">400</property>
     <property name="halign">end</property>
-    <property name="valign">fill</property>
     <style>
       <class name="maps-sidebar"/>
     </style>
-    <child>
+    <property name="child">
       <object class="GtkGrid" id="sidebar">
         <property name="name">sidebar</property>
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="vexpand">True</property>
-        <property name="valign">fill</property>
-        <property name="column_homogeneous">True</property>
+        <property name="can_focus">0</property>
+        <property name="vexpand">1</property>
+        <property name="column_homogeneous">1</property>
         <property name="orientation">vertical</property>
         <property name="width_request">320</property>
         <property name="row_spacing">2</property>
         <child>
           <object class="GtkBox" id="mode-chooser">
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can_focus">0</property>
             <property name="halign">center</property>
             <property name="margin-top">10</property>
             <child>
               <object class="GtkRadioButton" id="modePedestrianToggle">
                 <property name="name">mode-pedestrian-toggle</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="draw_indicator">False</property>
+                <property name="receives_default">1</property>
+                <property name="draw_indicator">0</property>
                 <property name="height-request">32</property>
                 <property name="width-request">42</property>
                 <child>
                   <object class="GtkImage" id="mode-pedestrian-image">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <property name="icon-name">route-pedestrian-symbolic</property>
                   </object>
                 </child>
@@ -52,17 +43,14 @@
             <child>
               <object class="GtkRadioButton" id="modeBikeToggle">
                 <property name="name">mode-bike-toggle</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="draw_indicator">False</property>
+                <property name="receives_default">1</property>
+                <property name="draw_indicator">0</property>
                 <property name="group">modePedestrianToggle</property>
                 <property name="height-request">32</property>
                 <property name="width-request">42</property>
                 <child>
                   <object class="GtkImage" id="mode-bike-image">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <property name="icon-name">route-bike-symbolic</property>
                   </object>
                 </child>
@@ -74,18 +62,15 @@
             <child>
               <object class="GtkRadioButton" id="modeCarToggle">
                 <property name="name">mode-car-toggle</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="active">True</property>
-                <property name="draw_indicator">False</property>
+                <property name="receives_default">1</property>
+                <property name="active">1</property>
+                <property name="draw_indicator">0</property>
                 <property name="group">modeBikeToggle</property>
                 <property name="height-request">32</property>
                 <property name="width-request">42</property>
                 <child>
                   <object class="GtkImage" id="mode-car-image">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <property name="icon-name">route-car-symbolic</property>
                   </object>
                 </child>
@@ -97,17 +82,15 @@
             <child>
               <object class="GtkRadioButton" id="modeTransitToggle">
                 <property name="name">mode-transit-toggle</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="draw_indicator">False</property>
+                <property name="receives_default">1</property>
+                <property name="draw_indicator">0</property>
                 <property name="group">modeCarToggle</property>
                 <property name="height-request">32</property>
                 <property name="width-request">42</property>
                 <child>
                   <object class="GtkImage" id="mode-transit-image">
-                    <property name="visible">False</property>
-                    <property name="can_focus">False</property>
+                    <property name="visible">0</property>
+                    <property name="can_focus">0</property>
                     <property name="icon-name">route-transit-symbolic</property>
                   </object>
                 </child>
@@ -124,36 +107,31 @@
         <child>
           <object class="GtkListBox" id="entryList">
             <property name="name">sidebar-entry-list</property>
-            <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can_focus">0</property>
             <property name="selection-mode">GTK_SELECTION_NONE</property>
           </object>
         </child>
         <child>
           <object class="GtkGrid" id="sidebar-route-info-wrapper">
-            <property name="visible">True</property>
-            <property name="hexpand">False</property>
+            <property name="hexpand">0</property>
             <child>
               <object class="GtkGrid" id="sidebar-route-info">
                 <property name="name">sidebar-route-info</property>
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
+                <property name="can_focus">0</property>
                 <property name="margin_start">17</property>
                 <property name="margin_end">17</property>
                 <property name="margin_top">12</property>
-                <property name="hexpand">true</property>
+                <property name="hexpand">1</property>
                 <child>
                   <object class="GtkLabel" id="timeInfo">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <property name="halign">start</property>
-                    <property name="hexpand">true</property>
+                    <property name="hexpand">1</property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkLabel" id="distanceInfo">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <property name="margin_start">10</property>
                   </object>
                 </child>
@@ -163,200 +141,188 @@
         </child>
         <child>
           <object class="GtkGrid">
-            <property name="visible">True</property>
-            <property name="valign">fill</property>
-            <property name="vexpand">True</property>
-            <property name="hexpand_set">True</property>
+            <property name="vexpand">1</property>
+            <property name="hexpand_set">1</property>
             <style>
               <class name="frame"/>
             </style>
             <child>
               <object class="GtkRevealer" id="transitRevealer">
-                <child>
+                <property name="visible">0</property>
+                <property name="child">
                   <object class="GtkStack" id="transitHeader">
-                    <property name="visible">True</property>
                     <property name="transition-type">GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT</property>
                   </object>
-                </child>
+                </property>
+                <layout>
+                  <property name="left_attach">0</property>
+                  <property name="top_attach">0</property>
+                </layout>
               </object>
-              <packing>
-                <property name="left_attach">0</property>
-                <property name="top_attach">0</property>
-              </packing>
             </child>
             <child>
               <object class="GtkStack" id="instructionStack">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
+                <property name="can_focus">0</property>
                 <child>
                   <object class="GtkScrolledWindow" id="instructionWindow">
                     <property name="name">instruction-window</property>
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="valign">fill</property>
-                    <property name="vexpand">True</property>
-                    <property name="margin">1</property>
+                    <property name="can_focus">0</property>
+                    <property name="vexpand">1</property>
+                    <property name="margin-start">1</property>
+                    <property name="margin-end">1</property>
+                    <property name="margin-top">1</property>
+                    <property name="margin-bottom">1</property>
                     <property name="hscrollbar_policy">never</property>
-                    <child>
+                    <property name="child">
                       <object class="GtkListBox" id="instructionList">
                         <property name="name">instruction-list</property>
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <property name="valign">fill</property>
-                        <property name="hexpand">True</property>
+                        <property name="can_focus">0</property>
+                        <property name="hexpand">1</property>
                       </object>
-                    </child>
+                    </property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkScrolledWindow" id="transitWindow">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="valign">fill</property>
-                    <property name="vexpand">True</property>
-                    <property name="margin">1</property>
+                    <property name="can_focus">0</property>
+                    <property name="vexpand">1</property>
+                    <property name="margin-start">1</property>
+                    <property name="margin-end">1</property>
+                    <property name="margin-top">1</property>
+                    <property name="margin-bottom">1</property>
                     <property name="hscrollbar_policy">never</property>
-                    <child>
+                    <property name="child">
                       <object class="GtkStack" id="transitListStack">
-                        <property name="visible">True</property>
                         <property 
name="transition-type">GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT_RIGHT</property>
-                        <property name="vhomogeneous">False</property>
+                        <property name="vhomogeneous">0</property>
                         <child>
-                          <object class="GtkListBox" id="transitOverviewListBox">
-                            <property name="visible">True</property>
-                            <property name="can-focus">False</property>
-                          </object>
-                          <packing>
+                          <object class="GtkStackPage">
                             <property name="name">overview</property>
-                          </packing>
+                            <property name="child">
+                              <object class="GtkListBox" id="transitOverviewListBox">
+                                <property name="can-focus">0</property>
+                              </object>
+                            </property>
+                          </object>
                         </child>
                         <child>
-                          <object class="GtkListBox" id="transitItineraryListBox">
-                            <property name="visible">True</property>
-                            <property name="can-focus">False</property>
-                            <property name="selection-mode">GTK_SELECTION_NONE</property>
-                          </object>
-                          <packing>
+                          <object class="GtkStackPage">
                             <property name="name">itinerary</property>
-                          </packing>
+                            <property name="child">
+                              <object class="GtkListBox" id="transitItineraryListBox">
+                                <property name="can-focus">0</property>
+                                <property name="selection-mode">GTK_SELECTION_NONE</property>
+                              </object>
+                            </property>
+                          </object>
                         </child>
                       </object>
-                    </child>
+                    </property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkSpinner" id="instructionSpinner">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="active">True</property>
+                    <property name="can_focus">0</property>
+                    <property name="spinning">True</property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkLabel" id="errorLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can_focus">0</property>
                     <style>
                       <class name="dim-label"/>
                     </style>
                   </object>
                 </child>
+                <layout>
+                  <property name="left_attach">0</property>
+                  <property name="top_attach">1</property>
+                </layout>
               </object>
-              <packing>
-                <property name="left_attach">0</property>
-                <property name="top_attach">1</property>
-              </packing>
             </child>
           </object>
         </child>
         <child>
           <object class="GtkStack" id="linkButtonStack">
+            <property name="visible">0</property>
             <child>
-              <object class="GtkLinkButton">
-                <property name="label" translatable="yes">Route search by GraphHopper</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_action_appearance">False</property>
-                <property name="relief">none</property>
-                <property name="uri">https://graphhopper.com</property>
-                <style>
-                  <class name="small-label"/>
-                </style>
-              </object>
-              <packing>
+              <object class="GtkStackPage">
                 <property name="name">turnByTurn</property>
-              </packing>
-            </child>
-            <child>
-              <object class="GtkGrid">
-                <property name="visible">True</property>
-                <property name="halign">GTK_ALIGN_END</property>
-                <child>
-                  <object class="GtkLabel" id="transitAttributionLabel">
-                    <property name="visible">True</property>
-                    <property name="can_focus">True</property>
-                    <property name="receives_default">True</property>
-                    <property name="use_markup">True</property>
+                <property name="child">
+                  <object class="GtkLinkButton">
+                    <property name="label" translatable="yes">Route search by GraphHopper</property>
+                    <property name="receives_default">1</property>
+                    <property name="uri">https://graphhopper.com</property>
                     <style>
                       <class name="small-label"/>
                     </style>
                   </object>
-                  <packing>
-                    <property name="left-attach">0</property>
-                    <property name="top-attach">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkMenuButton">
-                    <property name="visible">True</property>
-                    <property name="popover">transitDisclaimerPopover</property>
+                </property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkStackPage">
+                <property name="name">transit</property>
+                <property name="child">
+                  <object class="GtkGrid">
                     <property name="halign">GTK_ALIGN_END</property>
-                    <property name="margin-top">5</property>
-                    <property name="margin-bottom">5</property>
-                    <property name="margin-end">5</property>
-                    <property name="margin-start">5</property>
-                    <style>
-                      <class name="flat"/>
-                    </style>
                     <child>
-                      <object class="GtkGrid">
-                        <property name="visible">True</property>
-                        <property name="valign">GTK_ALIGN_CENTER</property>
+                      <object class="GtkLabel" id="transitAttributionLabel">
+                        <property name="receives_default">1</property>
+                        <property name="use_markup">1</property>
+                        <style>
+                          <class name="small-label"/>
+                        </style>
+                        <layout>
+                          <property name="left-attach">0</property>
+                          <property name="top-attach">0</property>
+                        </layout>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkMenuButton">
+                        <property name="popover">transitDisclaimerPopover</property>
+                        <property name="halign">GTK_ALIGN_END</property>
+                        <property name="margin-top">5</property>
+                        <property name="margin-bottom">5</property>
+                        <property name="margin-end">5</property>
+                        <property name="margin-start">5</property>
+                        <style>
+                          <class name="flat"/>
+                        </style>
                         <child>
-                          <object class="GtkImage">
-                            <property name="visible">True</property>
-                            <property name="can_focus">False</property>
-                            <property name="halign">GTK_ALIGN_CENTER</property>
-                            <property name="hexpand">False</property>
-                            <property name="icon-name">dialog-information-symbolic</property>
+                          <object class="GtkGrid">
+                            <property name="valign">GTK_ALIGN_CENTER</property>
+                            <child>
+                              <object class="GtkImage">
+                                <property name="can_focus">0</property>
+                                <property name="halign">GTK_ALIGN_CENTER</property>
+                                <property name="hexpand">0</property>
+                                <property name="icon-name">dialog-information-symbolic</property>
+                              </object>
+                            </child>
                           </object>
                         </child>
+                        <layout>
+                          <property name="left-attach">1</property>
+                          <property name="top-attach">0</property>
+                        </layout>
                       </object>
                     </child>
                   </object>
-                  <packing>
-                    <property name="left-attach">1</property>
-                    <property name="top-attach">0</property>
-                  </packing>
-                </child>
+                </property>
               </object>
-              <packing>
-                <property name="name">transit</property>
-              </packing>
             </child>
           </object>
         </child>
       </object>
-    </child>
+    </property>
   </template>
   <object class="GtkPopover" id="transitDisclaimerPopover">
-    <property name="visible">False</property>
-    <child>
+    <property name="child">
       <object class="GtkGrid">
-        <property name="visible">True</property>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="margin-top">5</property>
             <property name="margin-bottom">5</property>
             <property name="margin-start">5</property>
@@ -371,17 +337,15 @@ Names and brands shown are to be considered as registered trademarks when applic
           </object>
         </child>
       </object>
-    </child>
+    </property>
   </object>
   <object class="GtkGrid" id="transitItineraryHeader">
-    <property name="visible">True</property>
-    <property name="can-focus">False</property>
+    <property name="can-focus">0</property>
     <style>
       <class name="shaded"/>
     </style>
     <child>
       <object class="GtkButton" id="transitItineraryBackButton">
-        <property name="visible">True</property>
         <property name="margin-start">6</property>
         <property name="margin-end">6</property>
         <property name="margin-top">4</property>
@@ -389,56 +353,52 @@ Names and brands shown are to be considered as registered trademarks when applic
         <property name="halign">GTK_ALIGN_START</property>
         <child>
           <object class="GtkGrid">
-            <property name="visible">True</property>
             <property name="valign">GTK_ALIGN_CENTER</property>
             <child>
               <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="can-focus">False</property>
-                <property name="hexpand">False</property>
+                <property name="can-focus">0</property>
+                <property name="hexpand">0</property>
                 <property name="icon-name">go-previous-symbolic</property>
               </object>
             </child>
           </object>
         </child>
+        <layout>
+          <property name="left-attach">0</property>
+          <property name="top-attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left-attach">0</property>
-        <property name="top-attach">0</property>
-      </packing>
     </child>
     <child>
       <object class="GtkLabel" id="transitItineraryTimeLabel">
-        <property name="visible">True</property>
         <property name="margin-start">6</property>
         <property name="margin-end">6</property>
         <property name="margin-top">4</property>
         <property name="margin-bottom">4</property>
-        <property name="hexpand">False</property>
+        <property name="hexpand">0</property>
         <property name="halign">GTK_ALIGN_START</property>
+        <layout>
+          <property name="left-attach">1</property>
+          <property name="top-attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left-attach">1</property>
-        <property name="top-attach">0</property>
-      </packing>
     </child>
     <child>
       <object class="GtkLabel" id="transitItineraryDurationLabel">
-        <property name="visible">True</property>
         <property name="margin-start">6</property>
         <property name="margin-end">6</property>
         <property name="margin-top">4</property>
         <property name="margin-bottom">4</property>
-        <property name="hexpand">True</property>
+        <property name="hexpand">1</property>
         <property name="halign">GTK_ALIGN_START</property>
         <style>
           <class name="dim-label"/>
         </style>
+        <layout>
+          <property name="left-attach">2</property>
+          <property name="top-attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left-attach">2</property>
-        <property name="top-attach">0</property>
-      </packing>
     </child>
   </object>
 </interface>
diff --git a/data/ui/transit-options-panel.ui b/data/ui/transit-options-panel.ui
index a11acfa0..5725fad4 100644
--- a/data/ui/transit-options-panel.ui
+++ b/data/ui/transit-options-panel.ui
@@ -1,14 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <interface>
   <template class="Gjs_TransitOptionsPanel" parent="GtkGrid">
-    <property name="visible">True</property>
-    <property name="can_focus">False</property>
-    <property name="no-show-all">True</property>
+    <property name="can_focus">0</property>
+    <!-- TODO: was this needed, it's deprecated in GTK 4...-->
+    <!--<property name="no-show-all">True</property>-->
     <style>
       <class name="shaded"/>
     </style>
     <child>
       <object class="GtkComboBoxText" id="transitTimeOptionsComboBox">
-        <property name="visible">True</property>
         <property name="active_id">leaveNow</property>
         <property name="margin_start">6</property>
         <property name="margin_end">6</property>
@@ -19,43 +19,42 @@
           <item translatable="yes" id="leaveBy" comments="Indicates searching for itineraries leaving at the 
specified time at the earliest">Leave By</item>
           <item translatable="yes" id="arriveBy" comments="Indicates searching for itineraries arriving no 
later than the specified time">Arrive By</item>
         </items>
+        <layout>
+          <property name="left_attach">0</property>
+          <property name="top_attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left_attach">0</property>
-        <property name="top_attach">0</property>
-      </packing>
     </child>
     <child>
       <object class="GtkEntry" id="transitTimeEntry">
-        <property name="visible">False</property>
+        <property name="visible">0</property>
         <property name="width_chars">5</property>
         <property name="margin_start">3</property>
         <property name="margin_end">3</property>
         <property name="margin_top">4</property>
         <property name="margin_bottom">4</property>
+        <layout>
+          <property name="left_attach">1</property>
+          <property name="top_attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left_attach">1</property>
-        <property name="top_attach">0</property>
-      </packing>
     </child>
     <child>
       <object class="GtkMenuButton" id="transitDateButton">
-        <property name="visible">False</property>
+        <property name="visible">0</property>
         <property name="popover">transitDatePopover</property>
         <property name="margin_start">3</property>
         <property name="margin_end">3</property>
         <property name="margin_top">4</property>
         <property name="margin_bottom">4</property>
+        <layout>
+          <property name="left_attach">2</property>
+          <property name="top_attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left_attach">2</property>
-        <property name="top_attach">0</property>
-      </packing>
     </child>
     <child>
       <object class="GtkMenuButton" id="transitParametersMenuButton">
-        <property name="visible">True</property>
         <property name="popover">transitParametersPopover</property>
         <property name="halign">GTK_ALIGN_END</property>
         <property name="margin_start">3</property>
@@ -64,44 +63,39 @@
         <property name="margin_bottom">4</property>
         <child>
           <object class="GtkGrid">
-            <property name="visible">True</property>
             <property name="valign">GTK_ALIGN_CENTER</property>
             <child>
               <object class="GtkImage">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
+                <property name="can_focus">0</property>
                 <property name="halign">GTK_ALIGN_CENTER</property>
-                <property name="hexpand">True</property>
+                <property name="hexpand">1</property>
                 <property name="icon-name">view-more-symbolic</property>
               </object>
             </child>
           </object>
         </child>
+        <layout>
+          <property name="left_attach">3</property>
+          <property name="top_attach">0</property>
+        </layout>
       </object>
-      <packing>
-        <property name="left_attach">3</property>
-        <property name="top_attach">0</property>
-      </packing>
     </child>
   </template>
   <object class="GtkPopover" id="transitDatePopover">
-    <property name="visible">False</property>
-    <child>
-      <object class="GtkCalendar" id="transitDateCalendar">
-        <property name="visible">True</property>
-      </object>
-    </child>
+    <property name="child">
+      <object class="GtkCalendar" id="transitDateCalendar"/>
+    </property>
   </object>
   <object class="GtkPopover" id="transitParametersPopover">
-    <property name="visible">False</property>
-    <child>
+    <property name="child">
       <object class="GtkGrid">
-        <property name="visible">True</property>
-        <property name="margin">6</property>
+        <property name="margin-start">6</property>
+        <property name="margin-end">6</property>
+        <property name="margin-top">6</property>
+        <property name="margin-bottom">6</property>
         <property name="orientation">GTK_ORIENTATION_VERTICAL</property>
         <child>
           <object class="GtkLabel">
-            <property name="visible">True</property>
             <property name="halign">GTK_ALIGN_START</property>
             <property name="label" translatable="yes" comments="Header indicating selected modes of 
transit">Show</property>
             <property name="margin_start">6</property>
@@ -112,48 +106,41 @@
         </child>
         <child>
           <object class="GtkCheckButton" id="busCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Buses</property>
           </object>
         </child>
         <child>
           <object class="GtkCheckButton" id="tramCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Trams</property>
           </object>
         </child>
         <child>
           <object class="GtkCheckButton" id="trainCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Trains</property>
           </object>
         </child>
         <child>
           <object class="GtkCheckButton" id="subwayCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Subway</property>
           </object>
         </child>
         <child>
           <object class="GtkCheckButton" id="ferryCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Ferries</property>
           </object>
         </child>
         <child>
           <object class="GtkCheckButton" id="airplaneCheckButton">
-            <property name="visible">True</property>
-            <property name="active">True</property>
+            <property name="active">1</property>
             <property name="label" translatable="yes">Airplanes</property>
           </object>
         </child>
       </object>
-    </child>
+    </property>
   </object>
 </interface>
-  
diff --git a/src/application.js b/src/application.js
index c51fc421..4064d812 100644
--- a/src/application.js
+++ b/src/application.js
@@ -20,12 +20,13 @@
  *         Zeeshan Ali (Khattak) <zeeshanak gnome org>
  */
 
+const Gdk = imports.gi.Gdk;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Gio = imports.gi.Gio;
 const Gtk = imports.gi.Gtk;
-const GtkClutter = imports.gi.GtkClutter;
-const WebKit2 = imports.gi.WebKit2;
+// TODO: WebKit for GTK 4?
+//const WebKit2 = imports.gi.WebKit2;
 
 const CheckIn = imports.checkIn;
 const ContactPlace = imports.contactPlace;
@@ -54,7 +55,7 @@ var osmEdit = null;
 var normalStartup = true;
 var routeQuery = null;
 
-const _ensuredTypes = [WebKit2.WebView,
+const _ensuredTypes = [/*WebKit2.WebView*/,
                        OSMTypeSearchEntry.OSMTypeSearchEntry];
 
 var Application = GObject.registerClass({
@@ -223,8 +224,6 @@ var Application = GObject.registerClass({
     vfunc_startup() {
         super.vfunc_startup();
 
-        GtkClutter.init(null);
-
         Utils.loadStyleSheet(Gio.file_new_for_uri('resource:///org/gnome/Maps/application.css'));
 
         application = this;
@@ -255,8 +254,8 @@ var Application = GObject.registerClass({
         gtkSettings.gtk_application_prefer_dark_theme =
             settings.get('night-mode');
 
-        Gtk.IconTheme.get_default().append_search_path(GLib.build_filenamev([pkg.pkgdatadir,
-                                                                             'icons']));
+        Gtk.IconTheme.get_for_display(Gdk.Display.get_default()).
+            add_search_path(GLib.build_filenamev([pkg.pkgdatadir, 'icons']));
         this._initPlaceStore();
     }
 
diff --git a/src/contextMenu.js b/src/contextMenu.js
index 6a4727a2..cb185bc7 100644
--- a/src/contextMenu.js
+++ b/src/contextMenu.js
@@ -44,7 +44,8 @@ var ContextMenu = GObject.registerClass({
                         'routeFromHereItem',
                         'addIntermediateDestinationItem',
                         'routeToHereItem' ],
-}, class ContextMenu extends Gtk.Menu {
+}, class ContextMenu extends Gtk.PopoverMenu {
+    // TODO: should create from a menu model…
     _init(params) {
         this._mapView = params.mapView;
         delete params.mapView;
@@ -54,8 +55,9 @@ var ContextMenu = GObject.registerClass({
 
         super._init(params);
 
-        this._mapView.connect('button-release-event',
-                              this._onButtonReleaseEvent.bind(this));
+        // TODO: use GtkGesture (and also for long-press, see 
https://gitlab.gnome.org/GNOME/gnome-maps/-/issues/2)
+        //this._mapView.connect('button-release-event',
+        //                      this._onButtonReleaseEvent.bind(this));
 
         this._whatsHereItem.connect('activate',
                                     this._onWhatsHereActivated.bind(this));
diff --git a/src/main.js b/src/main.js
index d93f0408..3a1ab4f8 100644
--- a/src/main.js
+++ b/src/main.js
@@ -23,20 +23,16 @@
 pkg.initGettext();
 pkg.initFormat();
 pkg.require({ 'cairo': '1.0',
-              'Champlain': '0.12',
-              'Clutter': '1.0',
-              'Cogl': '1.0',
               'GeocodeGlib': '1.0',
-              'Gdk': '3.0',
+              'Gdk': '4.0',
               'GdkPixbuf': '2.0',
               'GFBGraph': '0.2',
               'Gio': '2.0',
               'GLib': '2.0',
               'Goa': '1.0',
               'GObject': '2.0',
-              'Gtk': '3.0',
-              'GtkChamplain': '0.12',
-              'GtkClutter': '1.0',
+              'Gtk': '4.0',
+              'Shumate': '0.0',
               'Rest': '0.7',
               'Soup': '2.4' });
 
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 10830667..6bfd9d15 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -22,12 +22,12 @@
 
 const _ = imports.gettext.gettext;
 
-const Champlain = imports.gi.Champlain;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Gdk = imports.gi.Gdk;
 const Gio = imports.gi.Gio;
 const Gtk = imports.gi.Gtk;
+const Shumate = imports.gi.Shumate;
 const Mainloop = imports.mainloop;
 
 const Application = imports.application;
@@ -101,7 +101,7 @@ var MainWindow = GObject.registerClass({
                 MapView.MapType.LOCAL : undefined,
             mainWindow: this });
 
-        this._mainGrid.add(this._mapView);
+        this._mainGrid.attach(this._mapView, 0, 0, 1, 1);
 
         this._mapView.gotoUserLocation(false);
 
diff --git a/src/mapSource.js b/src/mapSource.js
index b653b42b..793f631d 100644
--- a/src/mapSource.js
+++ b/src/mapSource.js
@@ -17,14 +17,12 @@
  * Author: Jonas Danielsson <jonas threetimestwo org>
  */
 
-const Champlain = imports.gi.Champlain;
-const Clutter = imports.gi.Clutter;
 const GdkPixbuf = imports.gi.GdkPixbuf;
 const Gio = imports.gi.Gio;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Gtk = imports.gi.Gtk;
-const GtkClutter = imports.gi.GtkClutter;
+const Shumate = imports.gi.Shumate;
 const System = imports.system;
 
 const Service = imports.service;
@@ -41,7 +39,7 @@ const _LOGO_PADDING_Y = 25;
 const _LOGO_PADDING_Y_RTL = 35;
 
 var AttributionLogo = GObject.registerClass({},
-class AttributionLogo extends GtkClutter.Actor {
+class AttributionLogo extends Gtk.Image {
 
     _init(view) {
         super._init();
@@ -61,16 +59,17 @@ class AttributionLogo extends GtkClutter.Actor {
     _updatePosition(view) {
         let width = _attributionImage.pixbuf.width;
         let height = _attributionImage.pixbuf.height;
-        let x = view.width  - width  - _LOGO_PADDING_X;
+        //let x = view.width  - width  - _LOGO_PADDING_X;
         /* TODO: ideally the attribution logo should be aligned to the left
          * side in RTL locales, but I couldn't get that working with Clutter
          * actor positioning, so adjust the padding to fit above the scale
          * for now
          */
-        let y = view.height - height -
-                (this._rtl ? _LOGO_PADDING_Y_RTL : _LOGO_PADDING_Y);
+        //let y = view.height - height -
+        //        (this._rtl ? _LOGO_PADDING_Y_RTL : _LOGO_PADDING_Y);
 
-        this.set_position(x, y);
+        // TODO: logo should be added to a GtkOverlay, I guess this should not be needed...
+        //this.set_position(x, y);
     }
 });
 
@@ -87,7 +86,7 @@ function _updateAttributionImage(source) {
 }
 
 function _createTileSource(source) {
-    let tileSource = new Champlain.NetworkTileSource({
+    let tileSource = new Shumate.NetworkTileSource({
         id: source.id,
         name: source.name,
         license: source.license,
@@ -95,7 +94,7 @@ function _createTileSource(source) {
         min_zoom_level: source.min_zoom_level,
         max_zoom_level: source.max_zoom_level,
         tile_size: source.tile_size,
-        renderer: new Champlain.ImageRenderer(),
+        //renderer: new Shumate.ImageRenderer(),
         uri_format: source.uri_format
     });
     tileSource.max_conns = source.max_connections;
@@ -106,18 +105,18 @@ function _createCachedSource(source) {
     let tileSource = _createTileSource(source);
     _updateAttributionImage(source);
 
-    let fileCache = new Champlain.FileCache({
+    let fileCache = new Shumate.FileCache({
         size_limit: _FILE_CACHE_SIZE_LIMIT,
-        renderer: new Champlain.ImageRenderer()
+        //renderer: new Shumate.ImageRenderer()
     });
 
-    let memoryCache = new Champlain.MemoryCache({
+    let memoryCache = new Shumate.MemoryCache({
         size_limit: _MEMORY_CACHE_SIZE_LIMIT,
-        renderer: new Champlain.ImageRenderer()
+        //renderer: new Shumate.ImageRenderer()
     });
 
-    let errorSource = new Champlain.NullTileSource({
-        renderer: new Champlain.ImageRenderer()
+    let errorSource = new Shumate.ErrorTileSource({
+        //renderer: new Shumate.ImageRenderer()
     });
 
     /*
@@ -125,7 +124,7 @@ function _createCachedSource(source) {
      * the next one in the chain tries instead. Until we get to the error
      * source.
      */
-    let sourceChain = new Champlain.MapSourceChain();
+    let sourceChain = new Shumate.MapSourceChain();
     sourceChain.push(errorSource);
     sourceChain.push(tileSource);
     sourceChain.push(fileCache);
diff --git a/src/mapView.js b/src/mapView.js
index d14b678a..cd2d3208 100644
--- a/src/mapView.js
+++ b/src/mapView.js
@@ -19,13 +19,11 @@
  * Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
  */
 
-const Champlain = imports.gi.Champlain;
-const Clutter = imports.gi.Clutter;
 const GObject = imports.gi.GObject;
 const Geocode = imports.gi.GeocodeGlib;
 const Gio = imports.gi.Gio;
 const Gtk = imports.gi.Gtk;
-const GtkChamplain = imports.gi.GtkChamplain;
+const Shumate = imports.gi.Shumate;
 const Mainloop = imports.mainloop;
 
 const Application = imports.application;
@@ -59,6 +57,7 @@ var MapType = {
 };
 const _LOCATION_STORE_TIMEOUT = 500;
 const MapMinZoom = 2;
+const MapMaxZoom = 19;
 
 /*
  * Due to the mathematics of spherical mericator projection,
@@ -110,10 +109,10 @@ var MapView = GObject.registerClass({
         'going-to-user-location': {},
         'gone-to-user-location': {},
         'view-moved': {},
-        'marker-selected': { param_types: [Champlain.Marker] },
+        'marker-selected': { param_types: [Shumate.Marker] },
         'map-type-changed': { param_types: [GObject.TYPE_STRING] }
     },
-}, class MapView extends GtkChamplain.Embed {
+}, class MapView extends Shumate.View {
 
     get routingOpen() {
         return this._routingOpen || this._instructionMarkerLayer.visible;
@@ -166,36 +165,34 @@ var MapView = GObject.registerClass({
         this._connectRouteSignals();
     }
 
-    _initScale(view) {
-        this._scale = new Champlain.Scale({ visible: true });
-        this._scale.connect_view(view);
+    _initScale() {
+        this._scale = new Shumate.Scale({ visible: true });
+        // this._scale.connect_view();
 
         if (Utils.getMeasurementSystem() === Utils.METRIC_SYSTEM)
-            this._scale.unit = Champlain.Unit.KM;
+            this._scale.unit = Shumate.Unit.KM;
         else
-            this._scale.unit = Champlain.Unit.MILES;
+            this._scale.unit = Shumate.Unit.MILES;
 
-        this._scale.set_x_expand(true);
-        this._scale.set_y_expand(true);
-        this._scale.set_x_align(Clutter.ActorAlign.START);
-        this._scale.set_y_align(Clutter.ActorAlign.END);
-        view.add_child(this._scale);
+        // TODO: scale should be added to a GtkOverlay...
+        // view.add_child(this._scale);
     }
 
     _initView() {
-        let view = this.get_view();
+        let viewport = this.get_viewport();
 
-        view.min_zoom_level = MapMinZoom;
-        view.goto_animation_mode = Clutter.AnimationMode.EASE_IN_OUT_CUBIC;
-        view.reactive = true;
-        view.kinetic_mode = true;
-        view.horizontal_wrap = true;
+        viewport.min_zoom_level = MapMinZoom;
+        viewport.max_zoom_level = MapMaxZoom;
 
-        view.connect('notify::latitude', this._onViewMoved.bind(this));
+        // this.goto_animation_mode = Clutter.AnimationMode.EASE_IN_OUT_CUBIC;
+        this.kinetic_mode = true;
+        this.horizontal_wrap = true;
+
+        this.connect('notify::latitude', this._onViewMoved.bind(this));
         // switching map type will set view min-zoom-level from map source
-        view.connect('notify::min-zoom-level', () => {
-            if (view.min_zoom_level < MapMinZoom) {
-                view.min_zoom_level = MapMinZoom;
+        this.connect('notify::min-zoom-level', () => {
+            if (viewport.min_zoom_level < MapMinZoom) {
+                viewport.min_zoom_level = MapMinZoom;
             }
         });
 
@@ -221,8 +218,7 @@ var MapView = GObject.registerClass({
             view.set_background_pattern(this._darkBackground);
         }
 
-        this._initScale(view);
-        return view;
+        this._initScale();
     }
 
     /* handler to draw background for dark theme,
@@ -313,19 +309,17 @@ var MapView = GObject.registerClass({
     }
 
     _initLayers() {
-        let mode = Champlain.SelectionMode.SINGLE;
-
-        this._userLocationLayer = new Champlain.MarkerLayer({ selection_mode: mode });
-        this.view.add_layer(this._userLocationLayer);
+        this._userLocationLayer = new Shumate.MarkerLayer();
+        this.add_layer(this._userLocationLayer);
 
-        this._placeLayer = new Champlain.MarkerLayer({ selection_mode: mode });
-        this.view.add_layer(this._placeLayer);
+        this._placeLayer = new Shumate.MarkerLayer();
+        this.add_layer(this._placeLayer);
 
-        this._instructionMarkerLayer = new Champlain.MarkerLayer({ selection_mode: mode });
-        this.view.add_layer(this._instructionMarkerLayer);
+        this._instructionMarkerLayer = new Shumate.MarkerLayer();
+        this.add_layer(this._instructionMarkerLayer);
 
-        this._annotationMarkerLayer = new Champlain.MarkerLayer({ selection_mode: mode });
-        this.view.add_layer(this._annotationMarkerLayer);
+        this._annotationMarkerLayer = new Shumate.MarkerLayer();
+        this.add_layer(this._annotationMarkerLayer);
 
         ShapeLayer.SUPPORTED_TYPES.push(GeoJSONShapeLayer.GeoJSONShapeLayer);
         ShapeLayer.SUPPORTED_TYPES.push(KmlShapeLayer.KmlShapeLayer);
@@ -396,7 +390,7 @@ var MapView = GObject.registerClass({
         if (this._mapType && this._mapType === mapType)
             return;
 
-        let overlay_sources = this.view.get_overlay_sources();
+        let overlay_sources = this.get_overlay_sources();
 
         this._mapType = mapType;
 
@@ -411,14 +405,15 @@ var MapView = GObject.registerClass({
             } else {
                 if (Service.getService().tiles.streetDark &&
                     Application.settings.get('night-mode')) {
-                    this.view.map_source = MapSource.createStreetDarkSource();
+                    this.map_source = MapSource.createStreetDarkSource();
                 } else {
-                    this.view.map_source = MapSource.createStreetSource();
+                    this.map_source = MapSource.createStreetSource();
                 }
             }
             if (!this._attribution) {
-                this._attribution = new MapSource.AttributionLogo(this.view);
-                this.view.add_child(this._attribution);
+                this._attribution = new MapSource.AttributionLogo(this);
+                // TODO: should add attribution logo to a GtkOverlay...
+                //this.view.add_child(this._attribution);
             }
 
             Application.settings.set('map-type', mapType);
@@ -543,7 +538,7 @@ var MapView = GObject.registerClass({
         let place =
             new Place.Place({ location: new Location.Location({ latitude: lat,
                                                                 longitude: lon }),
-                              initialZoom: this.view.zoom_level });
+                              initialZoom: this.get_viewport().zoom_level });
 
         new MapWalker.MapWalker(place, this).goTo(true);
     }
@@ -585,30 +580,34 @@ var MapView = GObject.registerClass({
 
     _goToStoredLocation() {
         let location = Application.settings.get('last-viewed-location');
+        let viewport = this.get_viewport();
 
         if (location.length === 2) {
             let [lat, lon] = location;
             let zoom = Application.settings.get('zoom-level');
 
-            if (zoom >= this.view.min_zoom_level &&
-                zoom <= this.view.max_zoom_level)
-                this.view.zoom_level = Application.settings.get('zoom-level');
+            Utils.debug('min_zoom_level: ' + viewport.min_zoom_level);
+            Utils.debug('max_zoom_level: ' + viewport.max_zoom_level);
+
+            if (zoom >= viewport.min_zoom_level &&
+                zoom <= viewport.max_zoom_level)
+                viewport.zoom_level = Application.settings.get('zoom-level');
             else
                 Utils.debug('Invalid initial zoom level: ' + zoom);
 
             if (lat >= MIN_LATITUDE && lat <= MAX_LATITUDE &&
                 lon >= MIN_LONGITUDE && lon <= MAX_LONGITUDE)
-                this.view.center_on(location[0], location[1]);
+                this.center_on(location[0], location[1]);
             else
                 Utils.debug('Invalid initial coordinates: ' + lat + ', ' + lon);
         } else {
             /* bounding box. for backwards compatibility, not used anymore */
-            let bbox = new Champlain.BoundingBox({ top: location[0],
+            let bbox = new Shumate.BoundingBox({ top: location[0],
                                                    bottom: location[1],
                                                    left: location[2],
                                                    right: location[3] });
-            this.view.connect("notify::realized", () => {
-                if (this.view.realized)
+            this.connect("notify::realized", () => {
+                if (this.realized)
                     this.gotoBBox(bbox, true);
             });
         }
diff --git a/src/osmAccountDialog.js b/src/osmAccountDialog.js
index b9a0ae7d..1c82ffa9 100644
--- a/src/osmAccountDialog.js
+++ b/src/osmAccountDialog.js
@@ -22,7 +22,8 @@
 
 const GObject = imports.gi.GObject;
 const Gtk = imports.gi.Gtk;
-const WebKit2 = imports.gi.WebKit2;
+// TODO: WebKit for GTK 4
+//const WebKit2 = imports.gi.WebKit2;
 
 const Application = imports.application;
 
diff --git a/src/photonParser.js b/src/photonParser.js
index 3c3a78b6..ab8ef657 100644
--- a/src/photonParser.js
+++ b/src/photonParser.js
@@ -22,7 +22,8 @@
 const _ = imports.gettext.gettext;
 
 const Geocode = imports.gi.GeocodeGlib;
-const GWeather = imports.gi.GWeather;
+// TODO: GWeather for GTK 4?
+//const GWeather = imports.gi.GWeather;
 
 const Address = imports.address;
 const OSMTypes = imports.osmTypes;
diff --git a/src/sendToDialog.js b/src/sendToDialog.js
index 9c3e9632..dec28acd 100644
--- a/src/sendToDialog.js
+++ b/src/sendToDialog.js
@@ -23,7 +23,8 @@ const Gio = imports.gi.Gio;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Gtk = imports.gi.Gtk;
-const GWeather = imports.gi.GWeather;
+// TODO: GWeather for GTK 4
+//const GWeather = imports.gi.GWeather;
 const Soup = imports.gi.Soup;
 
 const Application = imports.application;
diff --git a/src/sidebar.js b/src/sidebar.js
index f5e5f880..f0c63673 100644
--- a/src/sidebar.js
+++ b/src/sidebar.js
@@ -441,7 +441,8 @@ var Sidebar = GObject.registerClass({
 
     _clearInstructions() {
         let listBox = this._instructionList;
-        listBox.forall(listBox.remove.bind(listBox));
+        // TODO: GtkContainer is not available in GTK4, use get_first(), get_next(), or something like that
+        //listBox.foreach(listBox.remove.bind(listBox));
 
         this._instructionStack.visible_child = this._instructionWindow;
         this._timeInfo.label = '';
diff --git a/src/transitOptionsPanel.js b/src/transitOptionsPanel.js
index 6c23a3ee..0a43d2db 100644
--- a/src/transitOptionsPanel.js
+++ b/src/transitOptionsPanel.js
@@ -79,14 +79,16 @@ var TransitOptionsPanel = GObject.registerClass({
         /* trigger an update of the query time as soon as focus leave the time
          * entry, to allow the user to enter a time before selecting start
          * and destination without having to press enter */
-        this._transitTimeEntry.connect('focus-out-event',
-            this._onTransitTimeEntryActivated.bind(this));
-        this._transitDateButton.popover.get_child().connect('day-selected-double-click',
+        // TODO: how do we do this in GTK 4?
+        //this._transitTimeEntry.connect('focus-out-event',
+        //    this._onTransitTimeEntryActivated.bind(this));
+        this._transitDateButton.popover.get_child().connect('day-selected',
             this._onTransitDateCalenderDaySelected.bind(this));
-        this._transitDateButton.connect('toggled',
-            this._onTransitDateButtonToogled.bind(this));
-        this._transitParametersMenuButton.connect('toggled',
-            this._onTransitParametersToggled.bind(this))
+        // TODO: connect to 'closed' on the popover instead
+        //this._transitDateButton.connect('toggled',
+        //    this._onTransitDateButtonToogled.bind(this));
+        //this._transitParametersMenuButton.connect('toggled',
+        //    this._onTransitParametersToggled.bind(this))
     }
 
     _onTransitTimeOptionsComboboxChanged() {
diff --git a/src/utils.js b/src/utils.js
index b40707f6..14e15b2d 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -29,7 +29,8 @@ const GdkPixbuf = imports.gi.GdkPixbuf;
 const Geocode = imports.gi.GeocodeGlib;
 const Gio = imports.gi.Gio;
 const Gtk = imports.gi.Gtk;
-const GWeather = imports.gi.GWeather;
+// TODO: GWeather for GTK 4?
+//const GWeather = imports.gi.GWeather;
 const Soup = imports.gi.Soup;
 const ByteArray = imports.byteArray;
 
@@ -79,9 +80,9 @@ function once(obj, signal, callback) {
 function loadStyleSheet(file) {
     let provider = new Gtk.CssProvider();
     provider.load_from_file(file);
-    Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(),
-                                             provider,
-                                             Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+    Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(),
+                                              provider,
+                                              Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
 }
 
 function addActions(actionMap, entries, settings = null) {


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