Add getGcStyle() method to accommodate styling

Add getGcStyle() having a default implementation returning SWT.None

Author: ShahzaibIbrahim

binaries/org.eclipse.swt.win32.win32.x86_64/.settings/.api_filters

@@ -581,6 +581,14 @@
             </message_arguments>
         </filter>
     </resource>
+    <resource path="Eclipse SWT/common/org/eclipse/swt/graphics/ImageGcDrawer.java" type="org.eclipse.swt.graphics.ImageGcDrawer">
+        <filter id="404000815">
+            <message_arguments>
+                <message_argument value="org.eclipse.swt.graphics.ImageGcDrawer"/>
+                <message_argument value="getGcStyle()"/>
+            </message_arguments>
+        </filter>
+    </resource>
     <resource path="Eclipse SWT/common/org/eclipse/swt/graphics/ImageLoaderListener.java" type="org.eclipse.swt.graphics.ImageLoaderListener">
         <filter id="576720909">
             <message_arguments>

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

@@ -13,6 +13,8 @@
  *******************************************************************************/
 package org.eclipse.swt.graphics;
 
+import org.eclipse.swt.*;
+
 /**
  * Interface to provide a callback mechanism to draw on different GC instances
  * depending on the zoom the image will be used for. A common use case is when
@@ -45,4 +47,15 @@ public interface ImageGcDrawer {
 	default void postProcess(ImageData imageData) {
 	}
 
+	/**
+     * Returns the GC style used when creating the GC instance.
+     * Default implementation returns <code>SWT.NONE</code>.
+     *
+     * @return the GC style constant
+     *
+     * @since 3.130
+     */
+    default int getGcStyle() {
+        return SWT.NONE;
+    }
 }