include all panels on toolbar if enough space

This uses a crude heuristic that is conservative based on verbose
languages such as German. With icon text turned on, only a very wide
window that approaches full HD will all. Otherwise, Files, Markers, and
Notes are hidden.

Author: ddennedy

src/mainwindow.cpp

@@ -5245,6 +5245,11 @@ void MainWindow::on_actionShowTextUnderIcons_toggled(bool b)
     ui->mainToolBar->setToolButtonStyle(b ? Qt::ToolButtonTextUnderIcon : Qt::ToolButtonIconOnly);
     Settings.setTextUnderIcons(b);
     updateLayoutSwitcher();
+    if (b && this->width() < 1900) {
+        ui->mainToolBar->removeAction(ui->actionFiles);
+        ui->mainToolBar->removeAction(ui->actionMarkers);
+        ui->mainToolBar->removeAction(ui->actionNotes);
+    }
 }
 
 void MainWindow::on_actionShowSmallIcons_toggled(bool b)

src/mainwindow.ui

@@ -343,10 +343,12 @@
    <addaction name="actionAudioMeter"/>
    <addaction name="actionProperties"/>
    <addaction name="actionRecent"/>
+   <addaction name="actionNotes"/>
    <addaction name="actionPlaylist"/>
    <addaction name="actionFiles"/>
    <addaction name="actionTimeline"/>
    <addaction name="actionFilters"/>
+   <addaction name="actionMarkers"/>
    <addaction name="actionKeyframes"/>
    <addaction name="actionHistory"/>
    <addaction name="actionEncode"/>