[Win32] Fix hotspot of Cursor with accessibility scale factor

When a scale factor for cursors is applied via the accessibility
settings, this factor currently only affects the cursor size itself but
not the hotspot position calculation. In consequence, the hotspot is
only scaled by the monitor zoom and not the accessibility scale factor,
thus being misplaced.

This change adapts the zoom to be used when scaling the hotspot
coordinates.

Author: HeikoKlare

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

@@ -631,7 +631,7 @@ public CursorHandle createHandle(Device device, int zoom) {
 		int scaledZoom = (int) (zoom * getPointerSizeScaleFactor());
 		ImageData source = tempImage.getImageData(scaledZoom);
 		tempImage.dispose();
-		return setupCursorFromImageData(device, source, null, getHotpotXInPixels(zoom), getHotpotYInPixels(zoom));
+		return setupCursorFromImageData(device, source, null, getHotpotXInPixels(scaledZoom), getHotpotYInPixels(scaledZoom));
 	}
 }
 
@@ -650,8 +650,8 @@ public CursorHandle createHandle(Device device, int zoom) {
 		float accessibilityFactor = getPointerSizeScaleFactor();
 		int scaledZoom = (int) (zoom * accessibilityFactor);
 		ImageData scaledSource = DPIUtil.scaleImageData(device, this.source, scaledZoom, DEFAULT_ZOOM);
-		return setupCursorFromImageData(device, scaledSource, null, getHotpotXInPixels(zoom),
-				getHotpotYInPixels(zoom));
+		return setupCursorFromImageData(device, scaledSource, null, getHotpotXInPixels(scaledZoom),
+				getHotpotYInPixels(scaledZoom));
 	}
 }
 
@@ -680,7 +680,8 @@ private void validateMask(ImageData source, ImageData mask) {
 
 	@Override
 	public CursorHandle createHandle(Device device, int zoom) {
-		float scaledZoomFactor = zoom * getPointerSizeScaleFactor() / 100f;
+		int scaledZoom = (int) (zoom * getPointerSizeScaleFactor());
+		float scaledZoomFactor = scaledZoom / 100f;
 		int scaledSourceWidth = Math.round(this.source.width * scaledZoomFactor);
 		int scaledSourceHeight = Math.round(this.source.height * scaledZoomFactor);
 		ImageData scaledSource = this.source.scaledTo(scaledSourceWidth, scaledSourceHeight);
@@ -690,8 +691,8 @@ public CursorHandle createHandle(Device device, int zoom) {
 			int scaledMaskHeight = Math.round(this.mask.height * scaledZoomFactor);
 			scaledMask = this.mask.scaledTo(scaledMaskWidth, scaledMaskHeight);
 		}
-		return setupCursorFromImageData(device, scaledSource, scaledMask, getHotpotXInPixels(zoom),
-				getHotpotYInPixels(zoom));
+		return setupCursorFromImageData(device, scaledSource, scaledMask, getHotpotXInPixels(scaledZoom),
+				getHotpotYInPixels(scaledZoom));
 	}
 }