[FIXUP|SUGGESTION] Make swt.svg a fragment of o.e.swt

and add the other swt-fragments containing the native code explicitly to
the build-path of swt.svg.
Because the classloader of the host is shared by all fragments, the
plain Java ServiceLoader can now be used to get an implementation of
SVGRasterizer.

Author: HannesWell

bundles/org.eclipse.swt.svg/.classpath

@@ -4,5 +4,14 @@
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="lib" path="libs/jsvg-1.6.1.jar"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.win32.win32.x86_64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.win32.win32.aarch64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.gtk.linux.x86_64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.gtk.linux.riscv64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.gtk.linux.ppc64le"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.gtk.linux.loongarch64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.gtk.linux.aarch64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.cocoa.macosx.x86_64"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.swt.cocoa.macosx.aarch64"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

bundles/org.eclipse.swt.svg/.settings/org.eclipse.jdt.core.prefs

@@ -7,3 +7,4 @@ org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
 org.eclipse.jdt.core.compiler.release=enabled
 org.eclipse.jdt.core.compiler.source=17
+org.eclipse.jdt.core.incompleteClasspath=warning

bundles/org.eclipse.swt.svg/META-INF/MANIFEST.MF

@@ -5,6 +5,6 @@ Bundle-SymbolicName: org.eclipse.swt.svg
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.swt.svgPlugin
 Bundle-RequiredExecutionEnvironment: JavaSE-17
+Fragment-Host: org.eclipse.swt
 Export-Package: org.eclipse.swt.svg
-Import-Package: org.eclipse.swt.graphics
 Bundle-ClassPath: ., libs/jsvg-1.6.1.jar

bundles/org.eclipse.swt.svg/META-INF/services/org.eclipse.swt.graphics.SVGRasterizer

@@ -0,0 +1 @@
+org.eclipse.swt.svg.JSVGRasterizer

bundles/org.eclipse.swt.svg/src/org/eclipse/swt/svg/JSVGRasterizer.java

@@ -21,8 +21,6 @@
 import org.eclipse.swt.graphics.ImageData;
 import org.eclipse.swt.graphics.PaletteData;
 import org.eclipse.swt.graphics.RGB;
-import org.eclipse.swt.graphics.SVGRasterizerRegistry;
-
 import com.github.weisj.jsvg.*;
 import com.github.weisj.jsvg.geometry.size.*;
 import com.github.weisj.jsvg.parser.*;
@@ -37,14 +35,6 @@ public class JSVGRasterizer implements SVGRasterizer {
 
 	private SVGLoader svgLoader;
 
-	/**
-	 * Initializes the SVG rasterizer by registering an instance of this rasterizer
-	 * with the {@link SVGRasterizerRegistry}.
-	 */
-	public static void intializeJSVGRasterizer() {
-		SVGRasterizerRegistry.register(new JSVGRasterizer());
-	}
-
 	private final static Map<Key, Object> RENDERING_HINTS = Map.of(KEY_ANTIALIASING, VALUE_ANTIALIAS_ON, //
 			KEY_ALPHA_INTERPOLATION, VALUE_ALPHA_INTERPOLATION_QUALITY, //
 			KEY_COLOR_RENDERING, VALUE_COLOR_RENDER_QUALITY, //

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

@@ -44,4 +44,5 @@ public interface SVGRasterizer {
 	 * @throws IllegalArgumentException if the input stream is {@code null}.
 	 */
 	public boolean isSVGFile(InputStream stream) throws IOException;
+	//TODO: use optional above instead?
 }

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

@@ -11,31 +11,21 @@
  *******************************************************************************/
 package org.eclipse.swt.graphics;
 
+import java.util.*;
+
 /**
  * A registry for managing the instance of an {@link SVGRasterizer} implementation.
  * This allows for the registration and retrieval of a single rasterizer instance.
  *
  * @since 3.129
  */
 public class SVGRasterizerRegistry {
+	//TODO: make this internal?
 
 	/**
      * The instance of the registered {@link SVGRasterizer}.
      */
-	private static SVGRasterizer rasterizer;
-
-	 /**
-     * Registers the provided implementation of {@link SVGRasterizer}.
-     * If a rasterizer has already been registered, subsequent calls to this method
-     * will have no effect.
-     *
-     * @param implementation the {@link SVGRasterizer} implementation to register.
-     */
-	public static void register(SVGRasterizer implementation) {
-		if (rasterizer == null) {
-			rasterizer = implementation;
-		}
-	}
+	private static final SVGRasterizer RASTERIZER = ServiceLoader.load(SVGRasterizer.class).findFirst().orElse(null);
 
 	/**
      * Retrieves the currently registered {@link SVGRasterizer} implementation.
@@ -44,6 +34,6 @@ public static void register(SVGRasterizer implementation) {
      *         has been registered.
      */
 	public static SVGRasterizer getRasterizer() {
-		return rasterizer;
+		return RASTERIZER;
 	}
 }