Add setAutoscaleDisabled API to provide a better means to disabling autoscaling at widget level

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

@@ -3527,6 +3527,26 @@ NSTouch findTouchWithId(NSArray touches, NSObject identity) {
 	return null;
 }
 
+/**
+ * Sets the autoscaling mode for this widget. The capability is not supported on
+ * every platform, such that calling this method may not have an effect on
+ * unsupported platforms. The return value indicates if the autoscale mode was
+ * set properly. With {@link #isAutoScalable()}, the autoscale enablement can
+ * also be evaluated at any later point in time.
+ * <p>
+ * Currently, this is only supported on Windows.
+ * </p>
+ *
+ * @param autoscalingMode the autoscaling mode to set
+ *
+ * @return {@code false} if the operation was called on an unsupported platform
+ *
+ * @since 3.133
+ */
+public boolean setAutoscalingMode(AutoscalingMode autoscalingMode) {
+	return false;
+}
+
 void setBackground () {
 	if (!drawsBackground()) return;
 	Control control = findBackgroundControl ();

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/AutoscalingMode.java

@@ -0,0 +1,28 @@
+package org.eclipse.swt.graphics;
+
+/**
+ * Defines the autoscaling behavior used when rendering or computing layout for
+ * controls that support DPI‑aware scaling.
+ * <p>
+ * This mode determines whether SWT takes care of the scaling of widgets with
+ * respect to the zoom level of the monitor.
+ * </p>
+ *
+ * <ul>
+ * <li><b>{@link #ENABLED}</b> – Autoscaling is explicitly enabled. Values (such
+ * as coordinates, dimensions, or layout metrics) will be adjusted according to
+ * the effective scaling factor.</li>
+ *
+ * <li><b>{@link #DISABLED}</b> – Autoscaling is explicitly disabled. Values
+ * will be used as‑is without applying any scaling transformations.</li>
+ *
+ * <li><b>{@link #DISABLED_INHERITED}</b> – Autoscaling is disabled for this
+ * control and this is inherited by its children. Child controls will also be
+ * initialized with DISABLED_INHERITED AutoscalingMode.</li>
+ * </ul>
+ *
+ * @since 3.133
+ */
+public enum AutoscalingMode {
+	ENABLED, DISABLED, DISABLED_INHERITED
+}

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

@@ -5143,6 +5143,26 @@ void gtk_label_set_align(long label, float xAlign, float yAlign) {
 	GTK.gtk_label_set_yalign(label, yAlign);
 }
 
+/**
+ * Sets the autoscaling mode for this widget. The capability is not supported on
+ * every platform, such that calling this method may not have an effect on
+ * unsupported platforms. The return value indicates if the autoscale mode was
+ * set properly. With {@link #isAutoScalable()}, the autoscale enablement can
+ * also be evaluated at any later point in time.
+ * <p>
+ * Currently, this is only supported on Windows.
+ * </p>
+ *
+ * @param autoscalingMode the autoscaling mode to set
+ *
+ * @return {@code false} if the operation was called on an unsupported platform
+ *
+ * @since 3.133
+ */
+public boolean setAutoscalingMode(AutoscalingMode autoscalingMode) {
+	return false;
+}
+
 void setBackground () {
 	if ((state & BACKGROUND) == 0 && backgroundImage == null) {
 		if ((state & PARENT_BACKGROUND) != 0) {

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

@@ -78,12 +78,24 @@ public abstract class Control extends Widget implements Drawable {
 	Region region;
 	Font font;
 	int drawCount, foreground, background, backgroundAlpha = 255;
-	boolean autoScaleDisabled = false;
+	AutoscalingMode autoscalingMode = AutoscalingMode.ENABLED;
 
+	/**
+	 * @deprecated use {@link Shell#getZoom(AutoscalingMode)} instead to obtain the zoom of the shell.
+	 */
+	@Deprecated(since = "2026-03", forRemoval = true)
 	private static final String DATA_SHELL_ZOOM = "SHELL_ZOOM";
 
+	/**
+	 * @deprecated use {@link Control#setAutoscalingMode(AutoscalingMode)} instead to set the autoscaling mode directly.
+	 */
+	@Deprecated(since = "2026-03", forRemoval = true)
 	private static final String DATA_AUTOSCALE_DISABLED = "AUTOSCALE_DISABLED";
 
+	/**
+	 * @deprecated use {@link Control#setAutoscalingMode(AutoscalingMode)} instead to set the autoscaling mode directly.
+	 */
+	@Deprecated(since = "2026-03", forRemoval = true)
 	private static final String PROPOGATE_AUTOSCALE_DISABLED = "PROPOGATE_AUTOSCALE_DISABLED";
 /**
  * Prevents uninitialized instances from being created outside the package.
@@ -124,11 +136,11 @@ public abstract class Control extends Widget implements Drawable {
 public Control (Composite parent, int style) {
 	super (parent, style);
 	this.parent = parent;
-	Boolean parentPropagateAutoscaleDisabled = (Boolean) parent.getData(PROPOGATE_AUTOSCALE_DISABLED);
-	if (parentPropagateAutoscaleDisabled == null || parentPropagateAutoscaleDisabled) {
-		this.autoScaleDisabled = parent.autoScaleDisabled;
+	AutoscalingMode parentAutoscaleMode = parent.autoscalingMode;
+	if (parentAutoscaleMode == AutoscalingMode.DISABLED_INHERITED) {
+		this.autoscalingMode = parent.autoscalingMode;
 	}
-	if (!autoScaleDisabled) {
+	if (!isAutoscalingDisabled()) {
 		this.nativeZoom = getShellZoom();
 	}
 	createWidget ();
@@ -1286,13 +1298,28 @@ public Object getData(String key) {
 @Override
 public void setData(String key, Object value) {
 	super.setData(key, value);
-	if (DATA_AUTOSCALE_DISABLED.equals(key)) {
-		autoScaleDisabled = Boolean.parseBoolean(value.toString());
-		if (autoScaleDisabled) {
-			this.nativeZoom = 100;
-		} else {
-			this.nativeZoom = getShellZoom();
-		}
+	if (DATA_AUTOSCALE_DISABLED.equals(key) || PROPOGATE_AUTOSCALE_DISABLED.equals(key)) {
+		updateAutoScalingModeFromData();
+	}
+}
+
+/**
+ * @deprecated use {@link Control#setAutoscalingMode(AutoscalingMode)} instead.
+ * These hidden data objects will be removed in a future release and one has to
+ * migrate to the new API for that purpose.
+ */
+@Deprecated(since = "2026-03", forRemoval = true)
+private void updateAutoScalingModeFromData() {
+	Object propagateAutoscaleDisabled = getData(PROPOGATE_AUTOSCALE_DISABLED);
+	boolean propagateAutoscaling = propagateAutoscaleDisabled != null && Boolean.parseBoolean(propagateAutoscaleDisabled.toString());
+	Object autoscaleDisabled = getData(DATA_AUTOSCALE_DISABLED);
+	boolean isAutoscaleDisabled = autoscaleDisabled != null && Boolean.parseBoolean(autoscaleDisabled.toString());
+	if (isAutoscaleDisabled) {
+		autoscalingMode = propagateAutoscaling ? AutoscalingMode.DISABLED_INHERITED : AutoscalingMode.DISABLED;
+		this.nativeZoom = 100;
+	} else {
+		autoscalingMode = AutoscalingMode.ENABLED;
+		this.nativeZoom = getShellZoom();
 	}
 }
 
@@ -1874,6 +1901,11 @@ boolean isActive () {
 	return shell.getEnabled ();
 }
 
+@Override
+public boolean isAutoScalable() {
+	return autoscalingMode == AutoscalingMode.ENABLED;
+}
+
 /**
  * Returns <code>true</code> if the receiver is enabled and all
  * ancestors up to and including the receiver's nearest ancestor
@@ -3353,6 +3385,32 @@ private void fitInParentBounds(Rectangle boundsInPixels, int zoom) {
 	}
 }
 
+/**
+ * Sets the autoscaling mode for this widget. The capability is not supported on
+ * every platform, such that calling this method may not have an effect on
+ * unsupported platforms. The return value indicates if the autoscale mode was
+ * set properly. With {@link #isAutoScalable()}, the autoscale enablement can
+ * also be evaluated at any later point in time.
+ * <p>
+ * Currently, this is only supported on Windows.
+ * </p>
+ *
+ * @param autoscalingMode the autoscaling mode to set
+ *
+ * @return {@code false} if the operation was called on an unsupported platform
+ *
+ * @since 3.133
+ */
+public boolean setAutoscalingMode(AutoscalingMode autoscalingMode) {
+	this.autoscalingMode = autoscalingMode;
+	if (isAutoscalingDisabled()) {
+		this.nativeZoom = 100;
+	} else {
+		this.nativeZoom = getShellZoom();
+	}
+	return true;
+}
+
 void setBoundsInPixels (Rectangle rect) {
 	setBoundsInPixels (rect.x, rect.y, rect.width, rect.height);
 }
@@ -4866,15 +4924,15 @@ public boolean setParent (Composite parent) {
 @Override
 GC createNewGC(long hDC, GCData data) {
 	data.nativeZoom = nativeZoom;
-	if (autoScaleDisabled && data.font != null) {
+	if (isAutoscalingDisabled() && data.font != null) {
 		data.font = SWTFontProvider.getFont(display, data.font.getFontData()[0], 100);
 	}
 	return GC.win32_new(hDC, data);
 }
 
 @Override
 int getAutoscalingZoom() {
-	if (autoScaleDisabled) {
+	if (isAutoscalingDisabled()) {
 		return 100;
 	}
 	return super.getAutoscalingZoom();
@@ -4888,7 +4946,7 @@ int getShellZoom() {
 }
 
 int computeGetBoundsZoom() {
-	if (parent != null && !autoScaleDisabled) {
+	if (parent != null && !isAutoscalingDisabled()) {
 		return parent.getAutoscalingZoom();
 	}
 	return getAutoscalingZoom();
@@ -6076,10 +6134,14 @@ void sendZoomChangedEvent(Event event, Shell shell) {
 	}
 }
 
+private boolean isAutoscalingDisabled() {
+	return autoscalingMode != AutoscalingMode.ENABLED;
+}
+
 @Override
 void handleDPIChange(Event event, float scalingFactor) {
 	super.handleDPIChange(event, scalingFactor);
-	if (this.autoScaleDisabled) {
+	if (isAutoscalingDisabled()) {
 		this.nativeZoom = 100;
 	}
 	resizeFont(this, nativeZoom);