ui: Fixed font size in graph smaller on non MacOS systems

src/app/qt/view/QtGraphViewStyleImpl.cpp

@@ -1,6 +1,7 @@
 #include "qt/view/QtGraphViewStyleImpl.h"
 
 #include <QFontMetrics>
+#include <QSysInfo>
 
 QtGraphViewStyleImpl::~QtGraphViewStyleImpl()
 {
@@ -15,3 +16,13 @@ float QtGraphViewStyleImpl::getCharHeightForNodeType(Node::NodeType type)
 {
 	return QFontMetrics(QtGraphNode::getFontForNodeType(type)).height();
 }
+
+float QtGraphViewStyleImpl::getGraphViewZoomDifferenceForPlatform()
+{
+	if (QSysInfo::macVersion() == QSysInfo::MV_None)
+	{
+		return 1.25;
+	}
+
+	return 1;
+}

src/app/qt/view/QtGraphViewStyleImpl.h

@@ -11,6 +11,7 @@ public:
 	virtual ~QtGraphViewStyleImpl();
 	virtual float getCharWidthForNodeType(Node::NodeType type);
 	virtual float getCharHeightForNodeType(Node::NodeType type);
+	virtual float getGraphViewZoomDifferenceForPlatform();
 };
 
 #endif // QT_GRAPH_VIEW_STYLE_IMPL_H

src/lib/component/view/GraphViewStyle.cpp

@@ -76,10 +76,16 @@ void GraphViewStyle::setImpl(std::shared_ptr<GraphViewStyleImpl> impl)
 
 void GraphViewStyle::loadStyleSettings()
 {
+	if (!s_impl)
+	{
+		return;
+	}
+
 	s_fontSize = 14;
 	s_fontName = ApplicationSettings::getInstance()->getFontName();
 
-	s_zoomFactor = ApplicationSettings::getInstance()->getFontSize() / float(s_fontSize);
+	float zoomDifference = getImpl()->getGraphViewZoomDifferenceForPlatform();
+	s_zoomFactor = (ApplicationSettings::getInstance()->getFontSize()) / float(s_fontSize) * zoomDifference;
 
 	s_charWidths.clear();
 	s_charHeights.clear();

src/lib/component/view/GraphViewStyleImpl.h

@@ -9,6 +9,7 @@ public:
 	virtual ~GraphViewStyleImpl() { }
 	virtual float getCharWidthForNodeType(Node::NodeType type) = 0;
 	virtual float getCharHeightForNodeType(Node::NodeType type) = 0;
+	virtual float getGraphViewZoomDifferenceForPlatform() = 0;
 };
 
 #endif // GRAPH_VIEW_STYLE_IMPL_H