Utils: Add toolbarStyle to StyleHelper

Task-number: QTCREATORBUG-29054
Change-Id: I01572eb7bdd267ea6aadb9530afc52b3c7834382
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/stylehelper.cpp

@@ -58,6 +58,21 @@ QColor StyleHelper::alphaBlendedColors(const QColor &colorA, const QColor &color
                 );
 }
 
+int StyleHelper::navigationWidgetHeight()
+{
+    return m_toolbarStyle == ToolbarStyleCompact ? 24 : 30;
+}
+
+void StyleHelper::setToolbarStyle(ToolbarStyle style)
+{
+    m_toolbarStyle = style;
+}
+
+StyleHelper::ToolbarStyle StyleHelper::toolbarStyle()
+{
+    return m_toolbarStyle;
+}
+
 qreal StyleHelper::sidebarFontSize()
 {
     return HostOsInfo::isMacHost() ? 10 : 7.5;
@@ -89,6 +104,7 @@ QColor StyleHelper::panelTextColor(bool lightColored)
         return Qt::black;
 }
 
+StyleHelper::ToolbarStyle StyleHelper::m_toolbarStyle = StyleHelper::defaultToolbarStyle;
 // Invalid by default, setBaseColor needs to be called at least once
 QColor StyleHelper::m_baseColor;
 QColor StyleHelper::m_requestedBaseColor;

src/libs/utils/stylehelper.h

@@ -25,8 +25,16 @@ public:
     static const unsigned int DEFAULT_BASE_COLOR = 0x666666;
     static const int progressFadeAnimationDuration = 600;
 
+    enum ToolbarStyle {
+        ToolbarStyleCompact,
+        ToolbarStyleRelaxed,
+    };
+
     // Height of the project explorer navigation bar
-    static int navigationWidgetHeight() { return 24; }
+    static int navigationWidgetHeight();
+    static void setToolbarStyle(ToolbarStyle style);
+    static ToolbarStyle toolbarStyle();
+    static constexpr ToolbarStyle defaultToolbarStyle = ToolbarStyleCompact;
     static qreal sidebarFontSize();
     static QPalette sidebarFontPalette(const QPalette &original);
 
@@ -122,6 +130,7 @@ public:
     static QColor ensureReadableOn(const QColor &background, const QColor &desiredForeground);
 
 private:
+    static ToolbarStyle m_toolbarStyle;
     static QColor m_baseColor;
     static QColor m_requestedBaseColor;
 };