Replaced the DPIUtil scale by scale with zoom call

This commit replaces the DPIUtil calls from clients in win32 which are
still using DPIUtil autoScale calls, with scale calls utilizing the zoom
available within the clients.

contributes to #62 and #127

Author: amartya4256

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.autoScaleUp(parent.getClientArea()); // To Pixels
+		final Rectangle clientArea = DPIUtil.scaleUp(parent.getClientArea(), DPIUtil.getZoomForAutoscaleProperty(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

@@ -530,9 +530,10 @@ private void drag(Event dragEvent) {
 		*/
 		int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
 		OS.RedrawWindow (topControl.handle, null, 0, flags);
+		int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
 		POINT pt = new POINT ();
-		pt.x = DPIUtil.autoScaleUp(dragEvent.x);// To Pixels
-		pt.y = DPIUtil.autoScaleUp(dragEvent.y);// To Pixels
+		pt.x = DPIUtil.scaleUp(dragEvent.x, zoom);// To Pixels
+		pt.y = DPIUtil.scaleUp(dragEvent.y, zoom);// To Pixels
 		OS.MapWindowPoints (control.handle, 0, pt, 1);
 		RECT rect = new RECT ();
 		OS.GetWindowRect (hwndDrag, rect);

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

@@ -281,8 +281,9 @@ 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) {
-	pt_x = DPIUtil.autoScaleDown(pt_x);// To Points
-	pt_y = DPIUtil.autoScaleDown(pt_y);// To Points
+	int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	pt_x = DPIUtil.scaleDown(pt_x, zoom);// To Points
+	pt_y = DPIUtil.scaleDown(pt_y, zoom);// To Points
 	selectedDataType = null;
 	selectedOperation = DND.DROP_NONE;
 	if (iDataObject != null) iDataObject.Release();
@@ -348,8 +349,9 @@ int DragOver_64(int grfKeyState, long pt, long pdwEffect) {
 }
 
 int DragOver(int grfKeyState, int pt_x, int pt_y, long pdwEffect) {
-	pt_x = DPIUtil.autoScaleDown(pt_x);// To Points
-	pt_y = DPIUtil.autoScaleDown(pt_y);// To Points
+	int zoom = DPIUtil.getZoomForAutoscaleProperty(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;
 	int oldKeyOperation = keyOperation;
 
@@ -403,8 +405,9 @@ 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 {
-		pt_x = DPIUtil.autoScaleDown(pt_x);// To Points
-		pt_y = DPIUtil.autoScaleDown(pt_y);// To Points
+		int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+		pt_x = DPIUtil.scaleDown(pt_x, zoom);// To Points
+		pt_y = DPIUtil.scaleDown(pt_y, zoom);// To Points
 		DNDEvent event = new DNDEvent();
 		event.widget = this;
 		event.time = OS.GetMessageTime();

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.autoScaleUp(table.toControl(coordinates)); // To Pixels
+		coordinates = DPIUtil.scaleUp(table.toControl(coordinates), DPIUtil.getZoomForAutoscaleProperty(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/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.autoScaleUp(tree.toControl(coordinates)); // To Pixels
+		coordinates = DPIUtil.scaleUp(tree.toControl(coordinates), DPIUtil.getZoomForAutoscaleProperty(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.autoScaleUp(getClientArea()); // To Pixels
+	Rectangle area = DPIUtil.scaleUp(getClientArea(), DPIUtil.getZoomForAutoscaleProperty(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.autoScaleUp(getSize()); // To Pixels
+	Point size = DPIUtil.scaleUp(getSize(), DPIUtil.getZoomForAutoscaleProperty(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.autoScaleUp(getClientArea()); // To Pixels
+		Rectangle area = DPIUtil.scaleUp(getClientArea(), DPIUtil.getZoomForAutoscaleProperty(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);
@@ -1369,11 +1369,12 @@ void setBorderSpace(RECT newBorderwidth) {
 	setBounds();
 }
 void setBounds() {
-	Rectangle area = DPIUtil.autoScaleUp(frame.getClientArea()); // To Pixels
-	setBounds(DPIUtil.autoScaleDown(borderWidths.left),
-			  DPIUtil.autoScaleDown(borderWidths.top),
-			  DPIUtil.autoScaleDown(area.width - borderWidths.left - borderWidths.right),
-			  DPIUtil.autoScaleDown(area.height - borderWidths.top - borderWidths.bottom));
+	int zoom = DPIUtil.getZoomForAutoscaleProperty(nativeZoom);
+	Rectangle area = DPIUtil.scaleDown(frame.getClientArea(), zoom); // To Pixels
+	setBounds(DPIUtil.scaleDown(borderWidths.left, zoom),
+			  DPIUtil.scaleDown(borderWidths.top, zoom),
+			  DPIUtil.scaleDown(area.width - borderWidths.left - borderWidths.right, zoom),
+			  DPIUtil.scaleDown(area.height - borderWidths.top - borderWidths.bottom, zoom));
 	setObjectRects();
 }
 private void setExtent(int width, int height){

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

@@ -407,7 +407,7 @@ long EnumFontFamProc (long lpelfe, long lpntme, long FontType, long lParam) {
  */
 public Rectangle getBounds() {
 	checkDevice ();
-	return DPIUtil.autoScaleDown(getBoundsInPixels());
+	return DPIUtil.scaleDown(getBoundsInPixels(), getDeviceZoom());
 }
 
 private Rectangle getBoundsInPixels () {
@@ -514,7 +514,7 @@ public Point getDPI () {
 	int dpiX = OS.GetDeviceCaps (hDC, OS.LOGPIXELSX);
 	int dpiY = OS.GetDeviceCaps (hDC, OS.LOGPIXELSY);
 	internal_dispose_GC (hDC, null);
-	return DPIUtil.autoScaleDown(new Point (dpiX, dpiY));
+	return DPIUtil.scaleDown(new Point (dpiX, dpiY), getDeviceZoom());
 }
 
 /**

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

@@ -204,8 +204,9 @@ public final class Image extends Resource implements Drawable {
 public Image(Device device, int width, int height) {
 	super(device);
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
-	width = DPIUtil.autoScaleUp (width);
-	height = DPIUtil.autoScaleUp (height);
+	final int zoom = getZoom();
+	width = DPIUtil.scaleUp (width, zoom);
+	height = DPIUtil.scaleUp (height, zoom);
 	init(width, height);
 	init();
 }

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

@@ -64,7 +64,7 @@ public abstract class Widget {
 	 *
 	 * @noreference This field is not intended to be referenced by clients.
 	 */
-	protected int nativeZoom;
+	public int nativeZoom;
 	int style, state;
 	Display display;
 	EventTable eventTable;