WIP

bundles/org.eclipse.swt/Eclipse SWT AWT/win32/org/eclipse/swt/awt/SWT_AWT.java

@@ -250,7 +250,7 @@ public static Frame new_Frame (final Composite parent) {
 
 	parent.getDisplay().asyncExec(() -> {
 		if (parent.isDisposed()) return;
-		final Rectangle clientArea = DPIUtil.scaleUp(parent.getClientArea(), DPIUtil.getZoomForAutoscaleProperty(parent.nativeZoom)); // To Pixels
+		final Rectangle clientArea = DPIUtil.scaleUp(parent.getClientArea(), parent.nativeZoom); // To Pixels
 		EventQueue.invokeLater(() -> {
 			frame.setSize (clientArea.width, clientArea.height);
 			frame.validate ();

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/DragSource.java

@@ -491,7 +491,7 @@ private void drag(Event dragEvent) {
 	hwndDrag = 0;
 	topControl = null;
 	if (image != null) {
-		int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+		int zoom = nativeZoom;
 		imagelist = new ImageList(SWT.NONE, zoom);
 		imagelist.add(image);
 		topControl = control.getShell();

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/DropTarget.java

@@ -281,7 +281,7 @@ int DragEnter_64(long pDataObject, int grfKeyState, long pt, long pdwEffect) {
 }
 
 int DragEnter(long pDataObject, int grfKeyState, int pt_x, int pt_y, long pdwEffect) {
-	int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	int zoom = nativeZoom;
 	pt_x = DPIUtil.scaleDown(pt_x, zoom);// To Points
 	pt_y = DPIUtil.scaleDown(pt_y, zoom);// To Points
 	selectedDataType = null;
@@ -349,7 +349,7 @@ int DragOver_64(int grfKeyState, long pt, long pdwEffect) {
 }
 
 int DragOver(int grfKeyState, int pt_x, int pt_y, long pdwEffect) {
-	int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	int zoom = nativeZoom;
 	pt_x = DPIUtil.scaleDown(pt_x, zoom);// To Points
 	pt_y = DPIUtil.scaleDown(pt_y, zoom);// To Points
 	if (iDataObject == null) return COM.S_FALSE;
@@ -405,7 +405,7 @@ int Drop_64(long pDataObject, int grfKeyState, long pt, long pdwEffect) {
 
 int Drop(long pDataObject, int grfKeyState, int pt_x, int pt_y, long pdwEffect) {
 	try {
-		int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+		int zoom = nativeZoom;
 		pt_x = DPIUtil.scaleDown(pt_x, zoom);// To Points
 		pt_y = DPIUtil.scaleDown(pt_y, zoom);// To Points
 		DNDEvent event = new DNDEvent();

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TableDragSourceEffect.java

@@ -15,7 +15,6 @@
 
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.DPIUtil.*;
 import org.eclipse.swt.internal.win32.*;
 import org.eclipse.swt.widgets.*;
@@ -147,7 +146,7 @@ Image getDragSourceImage(DragSourceEvent event) {
 					data.transparentPixel = shdi.crColorKey << 8;
 				}
 				Display display = control.getDisplay();
-				dragSourceImage = new Image(display, new AutoScaleImageDataProvider(display, data, DPIUtil.getZoomForAutoscaleProperty(control.nativeZoom)));
+				dragSourceImage = new Image(display, new AutoScaleImageDataProvider(display, data, control.nativeZoom));
 				OS.SelectObject (memHdc, oldMemBitmap);
 				OS.DeleteDC (memHdc);
 				OS.DeleteObject (memDib);

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TableDropTargetEffect.java

@@ -151,7 +151,7 @@ public void dragOver(DropTargetEvent event) {
 		int effect = checkEffect(event.feedback);
 		long handle = table.handle;
 		Point coordinates = new Point(event.x, event.y);
-		coordinates = DPIUtil.scaleUp(table.toControl(coordinates), DPIUtil.getZoomForAutoscaleProperty(table.nativeZoom)); // To Pixels
+		coordinates = DPIUtil.scaleUp(table.toControl(coordinates), table.nativeZoom); // To Pixels
 		LVHITTESTINFO pinfo = new LVHITTESTINFO();
 		pinfo.x = coordinates.x;
 		pinfo.y = coordinates.y;

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragSourceEffect.java

@@ -15,7 +15,6 @@
 
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.DPIUtil.*;
 import org.eclipse.swt.internal.win32.*;
 import org.eclipse.swt.widgets.*;
@@ -146,7 +145,7 @@ Image getDragSourceImage(DragSourceEvent event) {
 					data.transparentPixel = shdi.crColorKey << 8;
 				}
 				Display display = control.getDisplay ();
-				dragSourceImage = new Image (display, new AutoScaleImageDataProvider(display, data, DPIUtil.getZoomForAutoscaleProperty(control.nativeZoom)));
+				dragSourceImage = new Image (display, new AutoScaleImageDataProvider(display, data, control.nativeZoom));
 				OS.SelectObject (memHdc, oldMemBitmap);
 				OS.DeleteDC (memHdc);
 				OS.DeleteObject (memDib);

bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDropTargetEffect.java

@@ -165,7 +165,7 @@ public void dragOver(DropTargetEvent event) {
 		int effect = checkEffect(event.feedback);
 		long handle = tree.handle;
 		Point coordinates = new Point(event.x, event.y);
-		coordinates = DPIUtil.scaleUp(tree.toControl(coordinates), DPIUtil.getZoomForAutoscaleProperty(tree.nativeZoom)); // To Pixels
+		coordinates = DPIUtil.scaleUp(tree.toControl(coordinates), tree.nativeZoom); // To Pixels
 		TVHITTESTINFO lpht = new TVHITTESTINFO ();
 		lpht.x = coordinates.x;
 		lpht.y = coordinates.y;

bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleClientSite.java

@@ -810,7 +810,7 @@ protected int GetWindow(long phwnd) {
 	return COM.S_OK;
 }
 RECT getRect() {
-	Rectangle area = DPIUtil.scaleUp(getClientArea(), DPIUtil.getZoomForAutoscaleProperty(nativeZoom)); // To Pixels
+	Rectangle area = DPIUtil.scaleUp(getClientArea(), nativeZoom); // To Pixels
 	RECT rect = new RECT();
 	rect.left   = area.x;
 	rect.top    = area.y;
@@ -987,14 +987,14 @@ private int OnInPlaceDeactivate() {
 	return COM.S_OK;
 }
 private int OnPosRectChange(long lprcPosRect) {
-	Point size = DPIUtil.scaleUp(getSize(), DPIUtil.getZoomForAutoscaleProperty(nativeZoom)); // To Pixels
+	Point size = DPIUtil.scaleUp(getSize(), nativeZoom); // To Pixels
 	setExtent(size.x, size.y);
 	return COM.S_OK;
 }
 private void onPaint(Event e) {
 	if (state == STATE_RUNNING || state == STATE_INPLACEACTIVE) {
 		SIZE size = getExtent();
-		Rectangle area = DPIUtil.scaleUp(getClientArea(), DPIUtil.getZoomForAutoscaleProperty(nativeZoom)); // To Pixels
+		Rectangle area = DPIUtil.scaleUp(getClientArea(), nativeZoom); // To Pixels
 		RECT rect = new RECT();
 		if (getProgramID().startsWith("Excel.Sheet")) { //$NON-NLS-1$
 			rect.left = area.x; rect.right = area.x + (area.height * size.cx / size.cy);
@@ -1369,7 +1369,7 @@ void setBorderSpace(RECT newBorderwidth) {
 	setBounds();
 }
 void setBounds() {
-	int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	int zoom = nativeZoom;
 	Rectangle area = DPIUtil.scaleDown(frame.getClientArea(), zoom); // To Pixels
 	setBounds(DPIUtil.scaleDown(borderWidths.left, zoom),
 			  DPIUtil.scaleDown(borderWidths.top, zoom),

bundles/org.eclipse.swt/Eclipse SWT Tests/win32/org/eclipse/swt/internal/Win32AutoscaleTestBase.java

@@ -42,7 +42,7 @@ public void tearDownTest() {
 
 	protected void changeDPIZoom (int nativeZoom) {
 		DPIUtil.setDeviceZoom(nativeZoom);
-		float scalingFactor = 1f * DPIUtil.getZoomForAutoscaleProperty(nativeZoom) / DPIUtil.getZoomForAutoscaleProperty(shell.nativeZoom);
+		float scalingFactor = 1f * nativeZoom / shell.nativeZoom;
 		DPIZoomChangeRegistry.applyChange(shell, nativeZoom, scalingFactor);
 	}
 }

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/FontMetrics.java

@@ -175,7 +175,7 @@ public int getLeading() {
 }
 
 private int getZoom() {
-	return DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	return nativeZoom;
 }
 
 /**

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/GC.java

@@ -3932,7 +3932,7 @@ void init(Drawable drawable, GCData data, long hDC) {
 	}
 	Image image = data.image;
 	if (image != null) {
-		data.hNullBitmap = OS.SelectObject(hDC, Image.win32_getHandle(image, DPIUtil.getZoomForAutoscaleProperty(data.nativeZoom)));
+		data.hNullBitmap = OS.SelectObject(hDC, Image.win32_getHandle(image, data.nativeZoom));
 		image.memGC = this;
 	}
 	int layout = data.layout;
@@ -5160,7 +5160,7 @@ private static int sin(int angle, int length) {
 }
 
 private int getZoom() {
-	return DPIUtil.getZoomForAutoscaleProperty(data.nativeZoom);
+	return data.nativeZoom;
 }
 
 }

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java

@@ -2333,7 +2333,7 @@ public void setBackground(Color color) {
 }
 
 private int getZoom() {
-	return DPIUtil.getZoomForAutoscaleProperty(initialNativeZoom);
+	return initialNativeZoom;
 }
 /**
  * Returns a string containing a concise, human-readable

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java

@@ -776,11 +776,11 @@ private int getNativeZoom(GC gc) {
 }
 
 private int getZoom(GC gc){
-	return DPIUtil.getZoomForAutoscaleProperty(getNativeZoom(gc));
+	return getNativeZoom(gc);
 }
 
 private int getZoom() {
-	return DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	return nativeZoom;
 }
 
 void drawInPixels (GC gc, int x, int y) {

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Control.java

@@ -4905,7 +4905,7 @@ LRESULT WM_DPICHANGED (long wParam, long lParam) {
 		if (newNativeZoom != oldNativeZoom) {
 			DPIUtil.setDeviceZoom (newNativeZoom);
 
-			float scalingFactor = 1f * DPIUtil.getZoomForAutoscaleProperty(newNativeZoom) / DPIUtil.getZoomForAutoscaleProperty(oldNativeZoom);
+			float scalingFactor = 1f * newNativeZoom / oldNativeZoom;
 			DPIZoomChangeRegistry.applyChange(this, newNativeZoom, scalingFactor);
 
 			RECT rect = new RECT ();
@@ -4914,14 +4914,14 @@ LRESULT WM_DPICHANGED (long wParam, long lParam) {
 			return LRESULT.ZERO;
 		}
 	} else {
-		int newZoom = DPIUtil.getZoomForAutoscaleProperty (newNativeZoom);
-		int oldZoom = DPIUtil.getZoomForAutoscaleProperty (nativeZoom);
+		int newZoom = newNativeZoom;
+		int oldZoom = nativeZoom;
 		if (newZoom != oldZoom) {
 			// Throw the DPI change event if zoom value changes
 			Event event = new Event();
 			event.type = SWT.ZoomChanged;
 			event.widget = this;
-			event.detail = DPIUtil.getZoomForAutoscaleProperty(newNativeZoom);
+			event.detail = newNativeZoom;
 			event.doit = true;
 			notifyListeners(SWT.ZoomChanged, event);
 			return LRESULT.ZERO;

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java

@@ -2657,7 +2657,7 @@ GC createNewGC(long hDC, GCData data) {
 }
 
 int getZoom() {
-	return DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	return nativeZoom;
 }
 
 private static void handleDPIChange(Widget widget, int newZoom, float scalingFactor) {