Fix regressions regarding UI resizing

The room list would be hidden only through window resizing.

5 files changed, 19 insertions, 3 deletions

diff --git a/include/ChatPage.h b/include/ChatPage.h

index 234aabfd..faabd6db 100644
--- a/include/ChatPage.h
+++ b/include/ChatPage.h
@@ -69,6 +69,14 @@ public:
         QSharedPointer<UserSettings> userSettings() { return userSettings_; }
         void deleteConfigs();
 
+        //! Calculate the width of the message timeline.
+        int timelineWidth();
+        bool isSideBarExpanded();
+        //! Hide the room & group list (if it was visible).
+        void hideSideBars();
+        //! Show the room/group list (if it was visible).
+        void showSideBars();
+
 public slots:
         void leaveRoom(const QString &room_id);
 
diff --git a/include/Config.h b/include/Config.h

index abf5dc05..3a3296d6 100644
--- a/include/Config.h
+++ b/include/Config.h
@@ -8,6 +8,7 @@
 // Font sizes are in pixels.
 
 namespace conf {
+constexpr int sideBarCollapsePoint = 450;
 // Global settings.
 constexpr int fontSize                   = 14;
 constexpr int textInputFontSize          = 14;
diff --git a/include/MainWindow.h b/include/MainWindow.h

index 10750e00..3840bd9a 100644
--- a/include/MainWindow.h
+++ b/include/MainWindow.h
@@ -73,9 +73,13 @@ public:
         void openMemberListDialog(const QString &room_id = "");
 
 protected:
-        void closeEvent(QCloseEvent *event);
+        void closeEvent(QCloseEvent *event) override;
+        void resizeEvent(QResizeEvent *event) override;
+        void showEvent(QShowEvent *event) override;
 
 private slots:
+        //! Show or hide the sidebars based on window's size.
+        void adjustSideBars();
         //! Handle interaction with the tray icon.
         void iconActivated(QSystemTrayIcon::ActivationReason reason);
 
diff --git a/include/Splitter.h b/include/Splitter.h

index d4c34430..99e02eed 100644
--- a/include/Splitter.h
+++ b/include/Splitter.h
@@ -29,8 +29,8 @@ public:
         void restoreSizes(int fallback);
 
 public slots:
-        void showSidebar();
         void hideSidebar();
+        void showFullRoomList();
         void showChatView();
 
 signals:
diff --git a/include/TopRoomBar.h b/include/TopRoomBar.h

index 981e3e40..994486e0 100644
--- a/include/TopRoomBar.h
+++ b/include/TopRoomBar.h
@@ -55,11 +55,14 @@ public:
         void setBorderColor(QColor &color) { borderColor_ = color; }
 
 public slots:
+        //! Add a "back-arrow" button that can switch to roomlist only view.
         void enableBackButton();
+        //! Replace the "back-arrow" button with the avatar of the room.
+        void disableBackButton();
 
 signals:
         void inviteUsers(QStringList users);
-        void showSidebar();
+        void showRoomList();
 
 protected:
         void mousePressEvent(QMouseEvent *) override