Set zoom for source image as GCzoom when the GC is not autoscalable

arunjose696 · arunjose696 · commit e0927d31395c · 2025-09-15T13:19:29.000+02:00
The calculated image zoom for the source image should be the same as the GCzoom(100) when the drawable of GC is not scalable Fixes: #2504
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/GC.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/GC.java
@@ -1140,6 +1140,9 @@ private int calculateZoomForImage(int gcZoom, int srcWidth, int srcHeight, int d
 			// unscaled images can use the GC zoom
 			return gcZoom;
 		}
+		if(!drawable.isAutoScalable()){
+			return gcZoom;
+		}
 
 		float imageScaleFactor = 1f * destWidth / srcWidth;
 		int imageZoom = Math.round(gcZoom * imageScaleFactor);

Original file line number	Diff line number	Diff line change
`@@ -1140,6 +1140,9 @@ private int calculateZoomForImage(int gcZoom, int srcWidth, int srcHeight, int d`
`1140`	`1140`	`// unscaled images can use the GC zoom`
`1141`	`1141`	`return gcZoom;`
`1142`	`1142`	`}`
	`1143`	`+ if(!drawable.isAutoScalable()){`
	`1144`	`+ return gcZoom;`
	`1145`	`+ }`
`1143`	`1146`
`1144`	`1147`	`float imageScaleFactor = 1f * destWidth / srcWidth;`
`1145`	`1148`	`int imageZoom = Math.round(gcZoom * imageScaleFactor);`