WIP made image scale to autoScaleProperty

bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder.java

@@ -2519,6 +2519,7 @@ void updateButtons() {
 	if (showMax) {
 		if (minMaxTb == null) {
 			minMaxTb = new ToolBar(this, SWT.FLAT);
+			minMaxTb.setBackground(getDisplay().getSystemColor(SWT.COLOR_DARK_MAGENTA));
 			initAccessibleMinMaxTb();
 			addTabControl(minMaxTb, SWT.TRAIL, 0, false);
 		}
@@ -2542,6 +2543,7 @@ void updateButtons() {
 	if (showMin) {
 		if (minMaxTb == null) {
 			minMaxTb = new ToolBar(this, SWT.FLAT);
+			minMaxTb.setBackground(getDisplay().getSystemColor(SWT.COLOR_DARK_MAGENTA));
 			initAccessibleMinMaxTb();
 			addTabControl(minMaxTb, SWT.TRAIL, 0, false);
 		}

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

@@ -491,8 +491,7 @@ private void drag(Event dragEvent) {
 	hwndDrag = 0;
 	topControl = null;
 	if (image != null) {
-		int zoom = nativeZoom;
-		imagelist = new ImageList(SWT.NONE, zoom);
+		imagelist = new ImageList(SWT.NONE, nativeZoom);
 		imagelist.add(image);
 		topControl = control.getShell();
 		/*
@@ -520,7 +519,7 @@ private void drag(Event dragEvent) {
 				null);
 			OS.ShowWindow (hwndDrag, OS.SW_SHOW);
 		}
-		OS.ImageList_BeginDrag(imagelist.getHandle(zoom), 0, offsetX, event.offsetY);
+		OS.ImageList_BeginDrag(imagelist.getHandle(nativeZoom), 0, offsetX, event.offsetY);
 		/*
 		* Feature in Windows. When ImageList_DragEnter() is called,
 		* it takes a snapshot of the screen  If a drag is started
@@ -532,8 +531,8 @@ private void drag(Event dragEvent) {
 		int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
 		OS.RedrawWindow (topControl.handle, null, 0, flags);
 		POINT pt = new POINT ();
-		pt.x = DPIUtil.scaleUp(dragEvent.x, zoom);// To Pixels
-		pt.y = DPIUtil.scaleUp(dragEvent.y, zoom);// To Pixels
+		pt.x = DPIUtil.scaleUp(dragEvent.x, nativeZoom);// To Pixels
+		pt.y = DPIUtil.scaleUp(dragEvent.y, nativeZoom);// 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

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

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

@@ -1369,12 +1369,11 @@ void setBorderSpace(RECT newBorderwidth) {
 	setBounds();
 }
 void setBounds() {
-	int zoom = 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));
+	Rectangle area = DPIUtil.scaleDown(frame.getClientArea(), nativeZoom); // To Pixels
+	setBounds(DPIUtil.scaleDown(borderWidths.left, nativeZoom),
+			  DPIUtil.scaleDown(borderWidths.top, nativeZoom),
+			  DPIUtil.scaleDown(area.width - borderWidths.left - borderWidths.right, nativeZoom),
+			  DPIUtil.scaleDown(area.height - borderWidths.top - borderWidths.bottom, nativeZoom));
 	setObjectRects();
 }
 private void setExtent(int width, int height){

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

@@ -976,9 +976,12 @@ public void drawImage (Image image, int srcX, int srcY, int srcWidth, int srcHei
 	if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
 
-	int deviceZoom = getZoom();
+	int deviceZoom = image.useDeviceZoom ? DPIUtil.getZoomForAutoscaleProperty(getZoom()) : getZoom();
 	Rectangle src = DPIUtil.scaleUp(drawable, new Rectangle(srcX, srcY, srcWidth, srcHeight), deviceZoom);
-	Rectangle dest = DPIUtil.scaleUp(drawable, new Rectangle(destX, destY, destWidth, destHeight), deviceZoom);
+	destX = DPIUtil.scaleUp(destX, getZoom());
+	destY = DPIUtil.scaleUp(destY, getZoom());
+	destWidth = DPIUtil.scaleUp(destWidth, deviceZoom);
+	destHeight = DPIUtil.scaleUp(destHeight, deviceZoom);
 	if (deviceZoom != 100) {
 		/*
 		 * This is a HACK! Due to rounding errors at fractional scale factors,
@@ -996,13 +999,13 @@ public void drawImage (Image image, int srcX, int srcY, int srcWidth, int srcHei
 			}
 		}
 	}
-	drawImage(image, src.x, src.y, src.width, src.height, dest.x, dest.y, dest.width, dest.height, false);
+	drawImage(image, src.x, src.y, src.width, src.height, destX, destY, destWidth, destHeight, false);
 }
 
 void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
 	if (data.gdipGraphics != 0) {
 		//TODO - cache bitmap
-		long [] gdipImage = srcImage.createGdipImage(getZoom());
+		long [] gdipImage = srcImage.createGdipImage(DPIUtil.getZoomForAutoscaleProperty(getZoom()));
 		long img = gdipImage[0];
 		int imgWidth = Gdip.Image_GetWidth(img);
 		int imgHeight = Gdip.Image_GetHeight(img);

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

@@ -158,6 +158,8 @@ public final class Image extends Resource implements Drawable {
 
 	private HashMap<Integer, Long> zoomLevelToHandle = new HashMap<>();
 
+	boolean useDeviceZoom = false;
+
 /**
  * Prevents uninitialized instances from being created outside the package.
  */
@@ -256,6 +258,7 @@ public Image(Device device, Image srcImage, int flag) {
 	this.type = srcImage.type;
 	this.imageDataProvider = srcImage.imageDataProvider;
 	this.imageFileNameProvider = srcImage.imageFileNameProvider;
+	this.useDeviceZoom = srcImage.useDeviceZoom;
 	this.styleFlag = srcImage.styleFlag | flag;
 	initialNativeZoom = srcImage.initialNativeZoom;
 	this.dataAtBaseZoom = srcImage.dataAtBaseZoom;
@@ -350,6 +353,7 @@ public Image(Device device, Image srcImage, int flag) {
  */
 public Image(Device device, Rectangle bounds) {
 	super(device);
+	useDeviceZoom = true;
 	if (bounds == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
 	bounds = DPIUtil.scaleUp (bounds, getZoom());
@@ -492,6 +496,7 @@ public Image(Device device, ImageData source, ImageData mask) {
 public Image (Device device, InputStream stream) {
 	super(device);
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
+	useDeviceZoom = true;
 	this.dataAtBaseZoom =  new ElementAtZoom<>(new ImageData (stream), 100);
 	ImageData data = DPIUtil.autoScaleUp(device, this.dataAtBaseZoom);
 	init(data, getZoom());
@@ -534,6 +539,7 @@ public Image (Device device, String filename) {
 	super(device);
 	if (filename == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
+	useDeviceZoom = true;
 	this.dataAtBaseZoom = new ElementAtZoom<>(new ImageData (filename), 100);
 	ImageData data = DPIUtil.autoScaleUp(device, this.dataAtBaseZoom);
 	init(data, getZoom());
@@ -573,6 +579,7 @@ public Image(Device device, ImageFileNameProvider imageFileNameProvider) {
 	super(device);
 	this.imageFileNameProvider = imageFileNameProvider;
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
+	useDeviceZoom = true;
 	ElementAtZoom<String> fileName = DPIUtil.validateAndGetImagePathAtZoom (imageFileNameProvider, getZoom());
 	if (fileName.zoom() == getZoom()) {
 		long handle = initNative (fileName.element(), getZoom());
@@ -620,6 +627,7 @@ public Image(Device device, ImageFileNameProvider imageFileNameProvider) {
 public Image(Device device, ImageDataProvider imageDataProvider) {
 	super(device);
 	this.imageDataProvider = imageDataProvider;
+	useDeviceZoom = true;
 	initialNativeZoom = DPIUtil.getNativeDeviceZoom();
 	ElementAtZoom<ImageData> data =  DPIUtil.validateAndGetImageDataAtZoom(imageDataProvider, getZoom());
 	ImageData resizedData = DPIUtil.scaleImageData(device, data.element(), getZoom(), data.zoom());
@@ -788,6 +796,9 @@ private ImageData applyGrayImageData(ImageData data, int pHeight, int pWidth) {
  * @noreference This method is not intended to be referenced by clients.
  */
 public static Long win32_getHandle (Image image, int zoom) {
+	if(image.useDeviceZoom) {
+		zoom = DPIUtil.getZoomForAutoscaleProperty(zoom);
+	}
 	if(image.isDisposed()) {
 		return image.handle;
 	}
@@ -809,7 +820,7 @@ public static Long win32_getHandle (Image image, int zoom) {
 			image.init(newData, zoom);
 		}
 	} else if (image.imageDataProvider != null) {
-		ElementAtZoom<ImageData> imageCandidate = DPIUtil.validateAndGetImageDataAtZoom (image.imageDataProvider, zoom);
+		ElementAtZoom<ImageData> imageCandidate = DPIUtil.validateAndGetImageDataAtZoom (image.imageDataProvider, image.getZoom());
 		ImageData resizedData = DPIUtil.scaleImageData (image.device, imageCandidate.element(), zoom, imageCandidate.zoom());
 		ImageData newData = image.adaptImageDataIfDisabledOrGray(resizedData);
 		image.init(newData, zoom);
@@ -1008,6 +1019,9 @@ long initNative(String filename, int zoom) {
 }
 
 long [] createGdipImage(Integer zoom) {
+	if(useDeviceZoom) {
+		zoom = DPIUtil.getZoomForAutoscaleProperty(zoom);
+	}
 	long handle = Image.win32_getHandle(this, zoom);
 	switch (type) {
 		case SWT.BITMAP: {
@@ -1305,6 +1319,9 @@ public Rectangle getBounds() {
 }
 
 Rectangle getBounds(int zoom) {
+	if(useDeviceZoom) {
+		zoom = DPIUtil.getZoomForAutoscaleProperty(zoom);
+	}
 	if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
 	// Read the bounds in pixels from native layer.
 	Rectangle bounds = getBoundsInPixelsFromNative();
@@ -1411,6 +1428,9 @@ public ImageData getImageData() {
  * @since 3.106
  */
 public ImageData getImageData (int zoom) {
+	if(useDeviceZoom) {
+		zoom = DPIUtil.getZoomForAutoscaleProperty(zoom);
+	}
 	if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
 	int currentZoom = getZoom();
 	if (zoom == currentZoom) {
@@ -2333,6 +2353,9 @@ public void setBackground(Color color) {
 }
 
 private int getZoom() {
+	if(useDeviceZoom) {
+		return DPIUtil.getZoomForAutoscaleProperty(initialNativeZoom);
+	}
 	return initialNativeZoom;
 }
 /**