Better qml interface scaling

src/timeline2/view/qml/timeline.qml

@@ -25,7 +25,7 @@ Rectangle {
 
     FontMetrics {
         id: fontMetrics
-        font.family: "Arial"
+        font: smallFont
     }
     ClipMenu {
         id: clipMenu
@@ -220,7 +220,7 @@ Rectangle {
     property int headerWidth: timeline.headerWidth()
     property int activeTool: 0
     property real baseUnit: fontMetrics.font.pixelSize
-    property real fontUnit: fontMetrics.font.pointSize * 0.8
+    property real fontUnit: fontMetrics.font.pointSize * 0.9
     property color selectedTrackColor: Qt.rgba(activePalette.highlight.r, activePalette.highlight.g, activePalette.highlight.b, 0.2)
     property color frameColor: Qt.rgba(activePalette.shadow.r, activePalette.shadow.g, activePalette.shadow.b, 0.3)
     property bool autoScrolling: timeline.autoScroll

src/timeline2/view/timelinewidget.cpp

@@ -133,6 +133,7 @@ void TimelineWidget::setModel(const std::shared_ptr<TimelineItemModel> &model, M
     rootContext()->setContextProperty("audiorec", pCore->getAudioDevice());
     rootContext()->setContextProperty("guidesModel", pCore->projectManager()->current()->getGuideModel().get());
     rootContext()->setContextProperty("clipboard", new ClipboardProxy(this));
+    rootContext()->setContextProperty("smallFont", QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont));
     setSource(QUrl(QStringLiteral("qrc:/qml/timeline.qml")));
     connect(rootObject(), SIGNAL(mousePosChanged(int)), pCore->window(), SLOT(slotUpdateMousePosition(int)));
     connect(rootObject(), SIGNAL(zoomIn(bool)), pCore->window(), SLOT(slotZoomIn(bool)));