Default desktop scaling for win32.

modules/juce_gui_basics/components/juce_Desktop.cpp

@@ -26,7 +26,7 @@ Desktop::Desktop()
     : mouseClickCounter (0), mouseWheelCounter (0),
       kioskModeComponent (nullptr),
       allowedOrientations (allOrientations),
-      masterScaleFactor (1.0f)
+      masterScaleFactor ((float) getDefaultMasterScale())
 {
     displays = new Displays (*this);
     addMouseInputSource();

modules/juce_gui_basics/components/juce_Desktop.h

@@ -448,6 +448,8 @@ private:
     void triggerFocusCallback();
     void handleAsyncUpdate() override;
 
+    static double getDefaultMasterScale();
+
     Desktop();
     ~Desktop();
 

modules/juce_gui_basics/native/juce_android_Windowing.cpp

@@ -572,6 +572,11 @@ bool Desktop::canUseSemiTransparentWindows() noexcept
     return true;
 }
 
+double Desktop::getDefaultMasterScale()
+{
+    return 1.0;
+}
+
 Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
 {
     // TODO

modules/juce_gui_basics/native/juce_ios_Windowing.mm

@@ -297,6 +297,11 @@ void MouseInputSource::setRawMousePosition (Point<int>)
 {
 }
 
+double Desktop::getDefaultMasterScale()
+{
+    return 1.0;
+}
+
 Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
 {
     return Orientations::convertToJuce ([[UIApplication sharedApplication] statusBarOrientation]);

modules/juce_gui_basics/native/juce_linux_Windowing.cpp

@@ -3124,6 +3124,11 @@ void MouseInputSource::setRawMousePosition (Point<int> newPosition)
     XWarpPointer (display, None, root, 0, 0, 0, 0, newPosition.getX(), newPosition.getY());
 }
 
+double Desktop::getDefaultMasterScale()
+{
+    return 1.0;
+}
+
 Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
 {
     return upright;

modules/juce_gui_basics/native/juce_mac_Windowing.mm

@@ -226,6 +226,11 @@ void MouseInputSource::setRawMousePosition (Point<int> newPosition)
     CGAssociateMouseAndMouseCursorPosition (true);
 }
 
+double Desktop::getDefaultMasterScale()
+{
+    return 1.0;
+}
+
 Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
 {
     return upright;

modules/juce_gui_basics/native/juce_win32_Windowing.cpp

@@ -141,6 +141,7 @@ static inline Rectangle<int> rectangleFromRECT (const RECT& r) noexcept
     return Rectangle<int>::leftTopRightBottom ((int) r.left, (int) r.top, (int) r.right, (int) r.bottom);
 }
 
+//==============================================================================
 static void setDPIAwareness()
 {
     if (JUCEApplication::isStandaloneApp())
@@ -162,7 +163,7 @@ inline double getDPI()
     return dpi;
 }
 
-inline double getDisplayScale()
+double Desktop::getDefaultMasterScale()
 {
     return getDPI() / 96.0;
 }