Status bar: update the empty/full icon states even when status bar icons updating is disabled.

src/qt/qt_machinestatus.cpp

@@ -61,6 +61,8 @@ extern uint64_t tsc;
 
 extern MainWindow *main_window;
 
+static bool sbar_initialized = false;
+
 namespace {
 struct PixmapSetActive {
     QPixmap normal;
@@ -380,6 +382,31 @@ hdd_count(int bus)
     return c;
 }
 
+void
+MachineStatus::refreshEmptyIcons()
+{
+    /* Check if icons are initialized. */
+    if (!sbar_initialized)
+        return;
+
+    for (size_t i = 0; i < FDD_NUM; ++i)
+        d->fdd[i].setEmpty(machine_status.fdd[i].empty);
+    for (size_t i = 0; i < CDROM_NUM; ++i)
+        d->cdrom[i].setEmpty(machine_status.cdrom[i].empty);
+    for (size_t i = 0; i < ZIP_NUM; i++)
+        d->zip[i].setEmpty(machine_status.zip[i].empty);
+    for (size_t i = 0; i < MO_NUM; i++)
+        d->mo[i].setEmpty(machine_status.mo[i].empty);
+
+    d->cassette.setEmpty(machine_status.cassette.empty);
+
+    for (size_t i = 0; i < NET_CARD_MAX; i++)
+        d->net[i].setEmpty(machine_status.net[i].empty);
+
+    for (int i = 0; i < 2; ++i)
+        d->cartridge[i].setEmpty(machine_status.cartridge[i].empty);
+}
+
 void
 MachineStatus::refreshIcons()
 {
@@ -387,48 +414,32 @@ MachineStatus::refreshIcons()
     if (!update_icons)
         return;
 
-    for (size_t i = 0; i < FDD_NUM; ++i) {
+    for (size_t i = 0; i < FDD_NUM; ++i)
         d->fdd[i].setActive(machine_status.fdd[i].active);
-        d->fdd[i].setEmpty(machine_status.fdd[i].empty);
-    }
     for (size_t i = 0; i < CDROM_NUM; ++i) {
         d->cdrom[i].setActive(machine_status.cdrom[i].active);
         if (machine_status.cdrom[i].active)
             ui_sb_update_icon(SB_CDROM | i, 0);
-
-        d->cdrom[i].setEmpty(machine_status.cdrom[i].empty);
     }
     for (size_t i = 0; i < ZIP_NUM; i++) {
         d->zip[i].setActive(machine_status.zip[i].active);
         if (machine_status.zip[i].active)
             ui_sb_update_icon(SB_ZIP | i, 0);
-
-        d->zip[i].setEmpty(machine_status.zip[i].empty);
     }
     for (size_t i = 0; i < MO_NUM; i++) {
         d->mo[i].setActive(machine_status.mo[i].active);
         if (machine_status.mo[i].active)
             ui_sb_update_icon(SB_MO | i, 0);
-
-        d->mo[i].setEmpty(machine_status.mo[i].empty);
     }
 
-    d->cassette.setEmpty(machine_status.cassette.empty);
-
     for (size_t i = 0; i < HDD_BUS_USB; i++) {
         d->hdds[i].setActive(machine_status.hdd[i].active);
         if (machine_status.hdd[i].active)
             ui_sb_update_icon(SB_HDD | i, 0);
     }
 
-    for (size_t i = 0; i < NET_CARD_MAX; i++) {
+    for (size_t i = 0; i < NET_CARD_MAX; i++)
         d->net[i].setActive(machine_status.net[i].active);
-        d->net[i].setEmpty(machine_status.net[i].empty);
-    }
-
-    for (int i = 0; i < 2; ++i) {
-        d->cartridge[i].setEmpty(machine_status.cartridge[i].empty);
-    }
 }
 
 void
@@ -664,6 +675,10 @@ MachineStatus::refresh(QStatusBar *sbar)
     sbar->addWidget(d->sound.get());
     d->text = std::make_unique<QLabel>();
     sbar->addWidget(d->text.get());
+
+    sbar_initialized = true;
+
+    refreshEmptyIcons();
 }
 
 void
@@ -719,4 +734,6 @@ MachineStatus::updateTip(int tag)
         case SB_TEXT:
             break;
     }
+
+    refreshEmptyIcons();
 }

src/qt/qt_machinestatus.hpp

@@ -75,6 +75,7 @@ public slots:
     void refresh(QStatusBar *sbar);
     void message(const QString &msg);
     void updateTip(int tag);
+    void refreshEmptyIcons();
     void refreshIcons();
 
 private:

src/qt/qt_mainwindow.cpp

@@ -1904,6 +1904,13 @@ MainWindow::updateUiPauseState()
     ui->actionPause->setToolTip(tooltip_text);
 }
 
+void
+MainWindow::updateStatusEmptyIcons()
+{
+    if (status != nullptr)
+        status->refreshEmptyIcons();
+}
+
 void
 MainWindow::on_actionPreferences_triggered()
 {

src/qt/qt_mainwindow.hpp

@@ -63,6 +63,7 @@ public slots:
     void togglePause();
     void initRendererMonitorSlot(int monitor_index);
     void destroyRendererMonitorSlot(int monitor_index);
+    void updateStatusEmptyIcons();
     void updateUiPauseState();
 private slots:
     void on_actionFullscreen_triggered();

src/qt/qt_ui.cpp

@@ -256,6 +256,9 @@ ui_sb_update_icon_state(int tag, int state)
         case SB_TEXT:
             break;
     }
+
+    if (main_window != nullptr)
+        main_window->updateStatusEmptyIcons();
 }
 
 void