From b22775034b12a372ce1ef1cdb9533ac31afd7096 Mon Sep 17 00:00:00 2001
From: fedejeanne <Federico.Jeanne@vector.com>
Date: Mon, 12 May 2025 15:09:44 +0200
Subject: [PATCH] Preserve handles of images when changing zooms #2139

Preserve the handles of images created out of existing image handles and
also from those which are still needed (according to the method
AbstractImageProviderWrapper::getPreservedZoomLevels)

Fixes https://github.com/eclipse-platform/eclipse.platform.swt/issues/2139
---
 .../Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java  | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java
index 272cedb319f..3d1556a205a 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java	
@@ -1012,7 +1012,7 @@ private void destroyHandles() {
 
 @Override
 void destroyHandlesExcept(Set<Integer> zoomLevels) {
-	destroyHandles(zoom -> !zoomLevels.contains(zoom) || !this.imageProvider.getPreservedZoomLevels().contains(zoom));
+	destroyHandles(zoom -> !zoomLevels.contains(zoom) && !this.imageProvider.getPreservedZoomLevels().contains(zoom));
 }
 
 private void destroyHandles(Predicate<Integer> filter) {
@@ -1930,6 +1930,11 @@ ImageData newImageData(int zoom) {
 	AbstractImageProviderWrapper createCopy(Image image) {
 		return image.new ExistingImageHandleProviderWrapper(handle, zoomForHandle);
 	}
+
+	@Override
+	public Collection<Integer> getPreservedZoomLevels() {
+		return Collections.singleton(zoomForHandle);
+	}
 }
 
 private abstract class ImageFromImageDataProviderWrapper extends AbstractImageProviderWrapper {